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Home My WebLink About20230110Exhibit No. 6 to Ellsworth Direct.pdf Idaho – Northwest Up-rate Hemingway – Boardman 500 kV Transmission Project Project Review Group Phase II Rating Report Submitted to: The Hemingway – Boardman 500 kV Transmission Project Review Group Submitted by: Idaho Power Company August 21, 2012 Page 2 of 776 Table of Contents 1. Executive Summary ............................................................................................................................... 4 2. Introduction .......................................................................................................................................... 5 2.1 Project Description ........................................................................................................................ 5 2.2 Project Background ....................................................................................................................... 7 2.3 Transfer Capability & Report Objective ........................................................................................ 7 2.4 Plan of Service ............................................................................................................................... 8 2.5 Planned Operating Date .............................................................................................................. 10 3. Study Methods & Standards ............................................................................................................... 10 3.1 Steady State Case Stressing ........................................................................................................ 10 3.2 Post-Transient ............................................................................................................................. 10 3.3 Voltage Stability .......................................................................................................................... 10 3.4 Transient Stability ....................................................................................................................... 11 3.5 Remedial Action Schemes ........................................................................................................... 11 4. Idaho-Northwest, West-to-East Studies ............................................................................................. 12 4.1 Idaho – Northwest, West-to-East (Path 14) Base Case ............................................................... 13 4.2 Simultaneous Interaction Study: COI, N-S (Path 66) ................................................................... 20 4.3 Simultaneous Interaction Study: Idaho-Sierra, N-S (Path 16) ..................................................... 26 4.4 Simultaneous Interaction Study: Montana-Idaho, N-S (Path 18) ............................................... 29 4.5 Simultaneous Interaction Study: Montana Southeast, N-S (Path 80) ......................................... 34 4.6 Simultaneous Interaction Study: North of John Day (Path 73) ................................................... 37 4.7 Simultaneous Interaction Study: PDCI, N-S (Path 65) ................................................................. 41 4.8 Simultaneous Interaction Study: West of Hatwai (Path 6) ......................................................... 45 4.9 Simultaneous Interaction Study: MSTI & SWIP (SWIP South – 1500 MW) ................................. 55 4.10 Sensitivity Study: Hemingway-Boardman Stand Alone .............................................................. 62 4.11 Sensitivity Study: Walla Walla Area, 100% Wind ........................................................................ 72 4.12 Sensitivity Study: High West of McNary & West of Slatt ............................................................ 80 4.13 Sensitivity Study: Longhorn Terminus ........................................................................................ 88 4.14 Sensitivity Study: NV Energy Updates ......................................................................................... 93 4.15 Simultaneous Interaction Study: MSTI & SWIP (SWIP South – 1770 MW) ................................. 96 5. Idaho-Northwest, East-to-West Studies ............................................................................................. 98 5.1 Idaho – Northwest, East-to-West (Path 14) Base Case ............................................................... 99 5.2 Simultaneous Interaction Study: Alturas Project, S-N (Path 76) ............................................... 106 5.3 Simultaneous Interaction Study: Idaho – Sierra, N-S (Path 16) ................................................ 112 5.4 Simultaneous Interaction Study: Montana-Idaho, S-N (Path 18) ............................................. 117 5.5 Simultaneous Interaction Study: Montana-Northwest, E-W (Path 8) ...................................... 122 5.6 Simultaneous Interaction Study: Montana Southeast, S-N (Path 80) ....................................... 125 5.7 Simultaneous Interaction Study: PG&E – Sierra, E-W (Path 24) ............................................... 128 5.8 Simultaneous Interaction Study: TOT 2B1, N-S (Path 78) ......................................................... 133 5.9 Simultaneous Interaction Study: TOT 2C, N-S (Path 35) ........................................................... 138 6. Conclusion ......................................................................................................................................... 143 Appendix A ................................................................................................................................................ 146 Page 3 of 776 16hs2a_2250idnw_N Base Case (Idaho-Northwest West-to-East) ...................................................... 146 Appendix B ................................................................................................................................................ 216 16la1sa_3400idnw_N Base Case (Idaho-Northwest, East-to-West) ..................................................... 216 Appendix C ................................................................................................................................................ 265 16hs2a_3400WoH_2250idnw_N Base Case (West of Hatwai, Path 8) ................................................. 265 Appendix D ................................................................................................................................................ 313 16hs2a_2250idnw_ms Base Case (MSTI & SWIP, SWIP South 1500 MW) ........................................... 313 Appendix E ................................................................................................................................................ 365 16hs2a_2250idnw_N_solo Base Case (Hemingway-Boardman Stand Alone) ...................................... 365 Appendix F ................................................................................................................................................ 434 16hs2a_2250idnw_nww Base Case (Walla Walla Area, 100% Wind) ................................................... 434 Appendix G ................................................................................................................................................ 485 16hs2a_2250idnw_N_wom Base Case (High West of McNary & West of Slatt) .................................. 485 Appendix H ................................................................................................................................................ 537 16la1sa_3400idnw_Path76 Base Case (Alturas Project, Path 76) ........................................................ 537 Appendix I ................................................................................................................................................. 572 16la1sa_3400idnw_nv Base Case (Idaho-Sierra, Path 16) .................................................................... 572 Appendix J ................................................................................................................................................. 616 16la1sa_3400idnw_N_Path24 Base Case (PG&E-Sierra, Path 24) ........................................................ 616 Appendix K ................................................................................................................................................ 651 16hs2a_2250idnw_N_lh Base Case (Longhorn Terminus Sensitivity Study) ........................................ 651 Appendix L ................................................................................................................................................. 686 16hs2a_2250idnw_N_nvmod Base Case (NV Energy Updates Sensitivity Study ................................. 686 Appendix M ............................................................................................................................................... 716 16hs2a_2250idnw_ms_swips Base Case (MSTI & SWIP, SWIP South – 1770 MW .............................. 716 Page 4 of 776 1. Executive Summary This document is written following the methodology established in the WECC Overview of Policies and Procedures for Project Coordination Review, Project Rating Review, and Progress Reports. The Hemingway – Boardman 500 kV project is a 300 mile, 500 kV transmission line from Hemingway substation, to a new substation in north-central Oregon. The northwest terminus options are: (1) the Grassland 500 kV substation, or (2) the Longhorn 500 kV substation. The Hemingway – Boardman 500 kV transmission project will be treated as an addition to the Idaho – Northwest (Path 14) WECC rated path. Idaho Power is requesting an increase to the Idaho – Northwest Path 14 WECC Accepted Rating upon completion of the Hemingway-Boardman 500 kV transmission project. Below are the proposed ratings in the west-to-east direction and the east-to-west direction: Table 1: Proposed ratings for Idaho-Northwest (Path 14) and Hemingway-Boardman 500 kV In order to prove the proposed ratings are acceptable, this report studied Idaho-Northwest (Path 14) at its proposed ratings simultaneous with other relevant similarly situated Phase 2 projects, Phase 3 projects, and existing WECC rated paths at their proposed ratings. The following simultaneous interaction studies have been completed: Table 2: Simultaneous Interaction Studies Completed Simultaneous Path Idaho-Northwest (Path 14) Hemingway- Boardman 500 kV Path Name Path # Simultaneous Path Flow W-E, 2250 MW W-E, 1407 MW COI, N-S 66 4800 MW W-E, 2250 MW W-E, 1407 MW Idaho-Sierra, N-S 16 500 MW W-E, 2250 MW W-E, 1407 MW Montana-Idaho, N-S 18 337 MW W-E, 2250 MW W-E, 1407 MW Montana Southeast, N-S 80 660 MW W-E, 2250 MW W-E, 1407 MW North of John Day 73 7800 MW W-E, 2250 MW W-E, 1407 MW PDCI, N-S 65 3100 MW W-E, 2250 MW W-E, 1301 MW West of Hatwai 6 3400 MW W-E, 2250 MW W-E, 1407 MW MSTI & SWIP, N-S II-5, II-11 1500 MW, 1950 MW E-W. 3400 MW E-W, 1284 MW Alturas Project, S-N 76 300 MW E-W. 3400 MW E-W, 1111 MW Idaho-Sierra, N-S 16 500 MW E-W. 3400 MW E-W, 1284 MW Montana-Idaho. S-N 18 256 MW E-W. 3400 MW E-W, 1284 MW Montana-Northwest, E-W 8 2200 MW E-W. 3400 MW E-W, 1284 MW Montana Southeast, S-N 80 600 MW E-W. 3400 MW E-W, 1284 MW PG&E-Sierra, E-W 24 150 MW E-W. 3400 MW E-W, 1284 MW TOT 2B1, N-S 78 560 MW E-W. 3400 MW E-W, 1284 MW TOT 2C, N-S 35 600 MW Page 5 of 776 In addition to simultaneous interaction studies, several sensitivity studies were completed. These sensitivity studies are listed below: Table 3: Sensitivity Studies Completed in Phase II The simultaneous interaction studies prove that the Idaho-Northwest path does not have an interaction with any other studied paths. The sensitivity studies prove that the Idaho-Northwest path can be operated to its proposed rating regardless of the system configuration or northwestern terminus. Additional information about the Idaho-Northwest Up-rate, Hemingway-Boardman 500 kV Transmission Project, and the study results are documented in the sections that follow. 2. Introduction 2.1 Project Description The Hemingway-Boardman 500 kV Transmission Project website is: http://www.boardmantohemingway.com/ The project website has a great deal of information including a Project Overview, an “About the Project” page, and maps showing the proposed route of the Hemingway-Boardman 500 kV transmission line. The Hemingway station is the southwestern Idaho transmission hub of the Gateway West Project and will be integrated into the Boise area 230 kV transmission system, as described in the Treasure Valley Electric Plan. Idaho Power’s partial ownership of the Boardman Power Plant, access to other Northwest resources, the coordination of northwest transmission projects, and the potential to combine multiple transmission needs into one project compelled Idaho Power to choose the Boardman area for the Oregon termination. The Hemingway – Boardman 500 kV project is a 300 mile, 500 kV transmission line from Hemingway substation, to a new substation in north-central Oregon. The northwest terminus options are: (1) the Grassland 500 kV substation, or (2) the Longhorn 500 kV substation. See Figure 1, on the following page, for a map showing proposed and alternate routes for the Hemingway-Boardman 500 kV transmission line. Page 6 of 776 Figure 1: Proposed & Alternate Routes for the Hemingway-Boardman 500 kV Transmission Project 2.2 Project Background The Hemingway-Boardman 500 kV project achieved Phase II status in March 2009. The Phase I Comprehensive Progress Report demonstrated the ratings indicated in the table below. Table 4: Phase I Ratings for Hemingway-Boardman 500 kV project The Phase I Comprehensive Progress Report focused on a solo-rating for the Hemingway-Boardman 500 kV Transmission Project. Recently, WECC revised the Overview of Policies and Procedures for Project Coordination Review, Project Rating Review, and Progress Reports to include a section on determining whether a new line is a subset of an existing path. Inserting the Hemingway-Boardman 500 kV line into a case with Idaho-Northwest stressed to its current 1200 MW rating resulted in ~70% of the Idaho- Northwest flow to shift over to the Hemingway-Boardman 500 kV line. This is an overwhelming indication that the Hemingway-Boardman 500 kV line should be added to the Idaho-Northwest path. 2.3 Transfer Capability & Report Objective The Hemingway – Boardman 500 kV transmission project will be treated as an addition to the Idaho – Northwest (Path 14) WECC rated path. Idaho Power is requesting an increase to the Idaho – Northwest Path 14 WECC Accepted Rating upon completion of the Hemingway-Boardman 500 kV transmission project. Below are the requested ratings: Table 5: Proposed ratings for Idaho-Northwest (Path 14) and Hemingway-Boardman 500 kV The objective of this Phase II study of the WECC 3-Phase Rating process is to: (1) Propose and confirm a 2250 MW west-to-east rating for the Idaho – Northwest (Path 14) including the Hemingway-Boardman 500 kV Transmission Project, and (2) Confirm the 3400 MW east-to-west rating for the Idaho – Northwest (Path 14) including the Hemingway-Boardman 500 kV Transmission Project. In order to confirm the 2250 MW west-to-east rating and the 3400 MW east-to-west rating, the Idaho-Northwest path was studied at its proposed rating, simultaneous with other paths that may be impacted at their proposed rating (Simultaneous Interaction Studies). Additionally, sensitivity cases were studied to ensure that Idaho-Northwest can be operated to 2250 MW west-to-east regardless of the system configuration or northwestern terminus. Table 2, in the Executive Summary, has a list of simultaneous interaction studies. Table 3, in the Executive Summary, has a list of sensitivity studies. Page 8 of 776 2.4 Plan of Service The following is a list of system additions corresponding with the Hemingway-Boardman 500 kV project. Hemingway – Boardman 500 kV Transmission Project  300 mile 500 kV series compensated (~50%) transmission line Hemingway Substation 500 kV equipment (approximate)  Two 120 MVAR Shunt Line Reactors on the Hemingway – Boardman 500 kV line o One Fixed (includes neutral reactor for single-pole switching) o One Switchable  One 200 MVAr Shunt Capacitor (in addition to the existing 200 MVAr shunt capacitor)  Series compensation for ~25% of the line reactance between Hemingway and Boardman Boardman Area Substation 500 kV equipment  One 150 MVAr shunt capacitor  Two 120 MVAR Shunt Line Reactors on the Hemingway – Boardman 500 kV line o One Fixed (includes neutral reactor for single-pole switching) o One Switchable  Series compensation for ~25% of the line reactance between Hemingway and Boardman Peterson Substation  One 31.7 MVAr 230 kV shunt capacitor The following is a list of the projects added to each of the study cases, unless otherwise noted. These projects are not required to achieve the proposed ratings, with one exception, noted below. Projects added to the base case:  Stage One of Gateway West o New series compensated 500 kV line from Aeolus to Anticline to Populus o New series compensated 500 kV line from Populus to Cedar Hill to Hemingway  Line required to achieve the Idaho-Northwest east-to-west proposed rating o Convert Kinport-Midpoint 345 kV to Kinport-Borah 345 kV & Borah-Midpoint 500 kV o New 1500 MVA 500/345 kV transformer at Borah substation  Bonneville Power Administration’s Big Eddy-Knight 500 kV Project  Cascade Crossings Transmission Project (single circuit)  McNary-Wallula 230 kV line  McNary-John Day 500 kV line  Central Ferry Additions including the Central Ferry-Lower Monumental 500 kV line  Southwest Intertie Project-South (SWIP South)  Longhorn Substation & Associated Wind Page 9 of 776 Hemingway substation is set up to eventually be in a breaker-and-a-half configuration after the addition of more 500 kV lines into the station. Figure 2 depicts how Hemingway substation will look after the addition of the Hemingway-Boardman 500 kV line. Figure 3 depicts how Hemingway substation will look after the addition of the Hemingway-Boardman and Populus-Cedar Hill-Hemingway 500 kV lines. Figure 2: Hemingway 500 kV bus after the Hemingway-Boardman 500 kV line Figure 3: Hemingway 500 kV bus after Hemingway-Boardman & Cedar Hill-Hemingway 500 kV lines In Figure 2, there is an extra breaker represented (slightly grayed) on the 500 kV rung next to the Midpoint 500 kV line terminal. This breaker is included in the plan of service because a breaker failure that results in the loss of the Midpoint 500 kV line and the Hemingway 500/230 kV transformer is unacceptable prior to the addition of Gateway West. Figure 3 does not depict this breaker after the addition of the Populus-Cedar Hill-Hemingway 500 kV line; a breaker failure that results in the loss of the Midpoint 500 kV line, and the Hemingway 500/230 kV transformer is acceptable, post-Gateway West. Boardman Midpoint Cedar Hill Summer Lake Boardman Midpoint Summer Lake Page 10 of 776 2.5 Planned Operating Date The Hemingway-Boardman 500 kV Transmission Project’s expected in-service date is subject to siting, permitting, regulatory approvals, in-service date requirements of the parties electing to construct the line, the terms of any resulting joint construction agreements, and other conditions. Based on Idaho Power’s assessment of those and other factors, as of the date of this report Idaho Power estimates that a project in-service date prior to 2018 is unlikely. 3. Study Methods & Standards 3.1 Steady State Case Stressing In order to study the Hemingway-Boardman 500 kV Transmission Project and the new Idaho-Northwest path, two WECC base cases were modified to: (1) stress Idaho-Northwest to 2250 MW in the west-to- east direction, and (2) stress Idaho-Northwest to 3400 MW in the east-to-west direction. These cases were then further modified to stress additional paths to study potential simultaneous interactions with the Idaho-Northwest path. Details of how each study base case was developed can be found in the ‘Steady State Case Stressing’ section of each simultaneous interaction study. 3.2 Post-Transient The power flow conditions generated above are modeled with single line (N-1) outages, credible double line (N-2) outages, and breaker failure outages to evaluate the NERC/WECC category B, C, and D performance. All modeled system bus voltages and line, transformer, and series capacitor current flows are monitored. Voltage deviations greater than 5% and significant overloaded elements are documented in the appendices associated with each study case. Post-transient solution assumptions: a. Generator Voltage Control was set to control the generator terminal busses. b. Switched VAr Devices set to Disabled except:  Bridger 500 kV  Keeler 230 kV SVC  Maple Valley 230 kV SVC  Select SVD or Remedial Action Scheme devices detailed on a case-by-case basis c. Transformer LTCs locked except:  Intermountain 345/230 kV d. Phase Shifter Control: Disabled. e. Area Interchange: Disabled. f. Governor Blocking: Baseload Flag was used. 3.3 Voltage Stability This study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at Page 11 of 776 least 105%, 102.5% and 102.5%, respectively, of the proposed rating. VQ Analysis determines the reactive power margin, following a contingency, at a specific electrical bus on the power system. Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. 3.4 Transient Stability Utilizing GE PSLF software, select single line (N-1), double line (N-2) and other outages were studied to evaluate transient stability performance. Relevant bus voltage and violations of the NERC/WECC allowed performance are documented in the appendices associated with each study case. 3.5 Remedial Action Schemes Consistent with the NERC/WECC standards and WECC criteria, both Category B (single line events) and Category C (double line events including those double line events triggered by a breaker failure) outages are considered. Remedial actions associated with these outages were implemented with guidance from the study group. A list of outages and their associated remedial action schemes are documented in the appendices associated with each study case. Page 12 of 776 4. Idaho-Northwest, West-to-East Studies Figure 4: Idaho-Northwest (Path 14) 2250 MW, West to East, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MWWalla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MW N of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MW Alturas Project = 151 MW Path C = -1600 MW Montana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 13 of 776 4.1 Idaho – Northwest, West-to-East (Path 14) Base Case 4.1.1 Background This is the main base case associated with the study of Idaho-Northwest in the west-to-east direction. In this case, Idaho-Northwest is stressed to its proposed 2250 MW west-to-east limit simultaneous with COI+NW-Sierra at its 4800 MW north-to-south limit, Idaho-Sierra at its 500 MW north-to-south limit, Montana-Idaho at its 337 MW north-to-south limit, Montana Southeast at its 600 MW north-to-south limit, North of John Day at its 7800 MW north-to-south limit, and PDCI at its 3100 MW north-to-south limit. After completing the majority of the study work, including PV Analysis, QV Analysis, and Transient Stability analysis, a few modeling errors were discovered in this base case on the NV Energy system. A sensitivity case, with these errors corrected is documented in Section 4.14. These modeling errors were slight and made little to no difference on the results of the case. 4.1.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case names for these studies are: 16hs2a_2250idnw_N & 16hs2a_1200idnw_N. Step-by-step development of the 16hs2a_2250idnw_N base case: Step 1: Add the transmission facilities described in the Plan of Service (Section 2.4). The 16hs2a_2250idnw_N base case includes all of the additions described in Section 2.4. Step 2: Adjust the COI (Path 66) and PDCI (Path 65) to flow at 4800 MW & 3100 MW, respectively. In the original 16hs2a base case downloaded from the WECC.biz website, flows on the COI & PDCI are approximately 3300 MW north-to-south and 2800 MW north-to-south, respectively. In order to increase COI to 4800 MW, and PDCI to 3100 MW, Northwest generation was increased and California generation was reduced. The Northwest hydro system was modified to match the 2011 NOPSG summer case created by BPA. Any additional generation required out of the Northwest came from northwest wind generation or northwest thermal plants. The California Operating Studies Subcommittee (OSS) Handbook was utilized to model the Northern California hydro system. Page 14 of 776 Step 3: Stress the Idaho-Northwest path to 2250 MW in the west-to-east direction. The Idaho-Northwest path was stressed to 2250 MW in the west-to-east direction by reducing PacifiCorp East (PACE) and Idaho Power generation and replacing the generation with a schedule from the Northwest. Generation adjustments in the Northwest were limited to northwest wind generation or northwest thermal plants. The hydro system, adjusted in Step 2, was not modified. Step 4: Stress simultaneous interaction study paths. The following seven paths were stressed to their transfer limit in the 16hs2a_2250idnw_N base case simultaneous with Idaho-Northwest at 2250 MW west-to-east: 1) COI (Path 66)+Alturas Project (Path76) – Adjusted to the 4800 MW north-to-south limit in Step 2 (4650 MW on COI & 150 MW on Alturas). 2) Idaho-Sierra (Path 16) – Adjusted to the 500 MW north-to-south limit by reducing generation in Sierra, and increasing generation in Idaho. 3) Montana-Idaho (Path 18) – Adjusted to the 337 MW north-to-south limit utilizing the Mill Creek 230 kV phase shifter and the Jefferson 161 kV phase shifter. 4) Montana Southeast (Path 80) – Adjusted to 600 MW north-to-south limit by reducing generation at Yellowtail, and adjusting the Billings 230 kV, Rimrock 161 kV, and Crossover 230 kV phase shifters. Miles City DC was adjusted to be a sink, rather than a source. 5) North of John Day (Path 73) – Adjusted to 7800 MW north-to-south to match the current North of John Day/COI/PDCI nomogram. 6) PDCI (Path 65) – Adjusted to 3100 MW north-to-south. Step 5: Adjusted other paths of concern. Path C (Path 20) was stressed to 1600 MW north-to-south and Northern-Southern California (Path 26) was stressed to its 4000 MW north-to-south rating. Path C is not a potential simultaneous interaction, because loss of Hemingway-Boardman 500 kV acts to reduce the flow on Path C. Northern-Southern California is not a potential simultaneous interaction because loss of Hemingway-Boardman 500 kV only increases the path flow by approximately four percent. Although not a concern, these two paths are being studied in a simultaneous manner with Idaho-Northwest. Step-by-step development of the 16hs2a_1200idnw_N case (“System Today” case): This case was developed as a comparison/benchmark case to the 16hs2a_2250idnw_N base case for post-transient analysis. The 16hs2a_1200idnw_N base case is meant to represent the system as it is today, with 2016 loads and heavy west-to-east flow on the Idaho-Northwest path. Hemingway- Boardman, Gateway West, Cascade Crossing, and the Longhorn projects are not modeled in this base case. Page 15 of 776 Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed earlier in this section of the report. Step 2: Remove elements from the base case to create a “System Today” case Remove the following elements from the 16hs2a_2250idnw_N case: (1) Hemingway-Boardman 500 kV, (2) Stage One of Gateway West, (3) Cascade Crossing, and (4) the Longhorn substation & associated wind projects. Step 3: Reduce Idaho-Northwest transfers to 1200 MW west-to-east. This is best accomplished by reducing Northwest generation and increasing Idaho area generation. By removing Longhorn, and the associated wind generation, Northwest generation was already reduced significantly. To replace Northwest generation, Idaho area peaking generation was switched in-service and scheduled to the Northwest. Step 4: Re-stress adjacent paths COI (Path 66) plus the Alturas Project (Path 76) was stressed to 4800 MW north-to-south (4650 COI, 150 Alturas), North of John Day (Path 73) was stressed to 7800 MW north-to-south to match the current North of John Day/COI/PDCI nomogram, PDCI (Path 65) was stressed to 3100 MW north-to-south and Montana-Idaho was stressed to the 337 MW north-to-south limit. 4.1.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr This is the limiting contingency for the Idaho-Northwest path in the west-to-east direction. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 112% of its 1237 Amp nominal rating (99.6% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 6: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112% (1237 Amp Rating) 99.6% (1396 Amp Rating) Oxbow – Lolo 230 kV 112% (920 Amp SOL) 98% (1047 Amp Rating) Mill Creek – Peterson 230 kV 101% (800 Amp Rating) 67% (1200 Amp Rating) Page 16 of 776 A breaker failure at Hemingway significantly stresses the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines. Section 2.4 considers different Hemingway 500 kV substation configurations to avoid severe breaker failures, however, at this time this breaker failure is considered to be credible. In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #2-BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kV The contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 112% of its nominal rating (99.3% of emergency). Since the overload is less than the Brownlee-Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 7: Post-transient results – BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kV Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112% (1237 Amp Rating) 99.3% (1396 Amp Rating) Oxbow – Lolo 230 kV 111% (920 Amp SOL) 98% (1047 Amp Rating) Mill Creek – Peterson 230 kV 117% (800 Amp Rating) 78% (1200 Amp Rating) The table above is evidence that a breaker failure resulting in loss of the Hemingway to Grassland line and the Grassland-Cedar Springs line (Cascade Crossing Project) at the proposed Grassland station significantly stresses the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines to near their emergency limits. Although the system performance is acceptable for this breaker failure contingency in this case, the high West of McNary/high West of Slatt sensitivity study (section 4.12.2) resulted in overloads beyond the emergency ratings for the Brownlee-Hells Canyon 230 kV line and Oxbow-Lolo 230 kV line. The system stressing for this breaker failure contingency for the sensitivity study indicates that the Hemingway-Grassland line and the Grassland-Cedar Springs line should not share a common breaker in a substation. Refer to Section 4.12 of this report for more detail on the overloads for the high West of McNary/high West of Slatt study. In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #3 – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This is another limiting contingency for the Idaho-Northwest path in the west-to-east direction. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 111% of its nominal rating (98% of emergency). Since the overload is less than the Brownlee-Hells Canyon 230 kV line’s emergency Page 17 of 776 rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 8: Post-transient results – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 111% (1237 Amp Rating) 98% (1396 Amp Rating) Oxbow – Lolo 230 kV 110% (920 Amp SOL) 96% (1047 Amp Rating) Mill Creek – Peterson 230 kV 103% (800 Amp Rating) 69% (1200 Amp Rating) If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Conclusion Several of the notable post transient contingencies resulting in more severe system stressing were noted above. All of these contingencies as well as all other post-transient contingencies result in acceptable performance. The results of contingencies associated with potential simultaneous interactions are in the sections that follow. Ultimately, the results indicate that Idaho-Northwest can achieve a 2250 MW west-to-east rating simultaneous with all other paths. 4.1.4 Voltage Stability The Idaho-Northwest west-to-east base case study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest base case, all contingencies have a post-transient solution with Idaho- Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency, at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr) VQ results for the 16hs2a_2250idnw_N base case can be found in Appendix A. Busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, Humboldt 345 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellowtail 230 kV. The tables below highlight a sample of the reactive margins at Brownlee and Hemingway. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Page 18 of 776 Table 9: Brownlee 230 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: Double Palo Verde 0.84 -613 Worst VQ contingency BF IPC MIDPOINT-HEM 500 KV & HEM 500/230 XFMR 0.88 -652 Worst VQ related to Idaho Power BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.87 -709 Worst VQ related to Idaho-NW Table 10: Hemingway 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments BUS: SUMMER LAKE 500 KV 0.75 -1835 Worst VQ contingency BF 4957 SUMMER LAKE-MALIN & SUMMER LAKE-HEM 0.75 -1865 Worst VQ contingency related to Idaho-NW BF IPC HEM-SUMMER LAKE & HEM 500/230 XFMR 0.71 -1910 Worst VQ contingency related to Idaho Power Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, voltage stability is not an issue for the Idaho-Northwest path. 4.1.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. The 16hs2a_2250idnw_N base case was the basis for all transient stability study results for the Idaho- Northwest v COI, Idaho-Sierra, Montana-Idaho, Montana Southeast, North of John Day and PDCI simultaneous interaction studies. The performance of transient stability contingencies are generally ranked based upon transient voltage dip. The worst N-1 contingency is the loss of the John Day-Grizzly #1 500 kV line. This contingency results in a voltage dip of approximately 13% on the Peterson 69 kV bus. 13% is well within the acceptable limits. The worst multi-element contingency is the N-2 loss of John Day-Grizzly #1 & #2 500 kV lines. This contingency results in a voltage dip of approximately 17% on the Peterson 69 kV bus. Again, 17% is well within the acceptable limits. 4.1.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr This contingency does not have any associated RAS. Page 19 of 776 Severe Post-Transient Contingency #2-BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kV After the loss of these two lines, switched VAr devices modeled at Peterson 230 kV and Quartz 138 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service for this contingency. Table 11: Shunt Capacitor Switching in BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #3 – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This contingency does not have any associated RAS. Page 20 of 776 4.2 Simultaneous Interaction Study: COI, N-S (Path 66) Figure 5: Idaho-Northwest (Path 14) 2250 MW, West to East v. COI (Path 66), North to South, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MWN of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MWAlturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 21 of 776 4.2.1 Background & Need for Simultaneous Interaction Studies The COI path (Path 66) is made up of three 500 kV transmission lines, Malin-Round Mtn #1 & #2 and Captain Jack-Olinda. This path has a 4800 MW rating north-to-south. COI (Path 66), Alturas Project (Path76), North of John Day (Path 73), PDCI (Path 65), and Hemingway- Summer Lake (Path 75) are all interrelated through the North of John Day v COI+Alturas or PDCI nomogram. Historically, with higher west-to-east flow on the Hemingway-Summer Lake 500 kV line, this nomogram has limited the flow south of Malin on the COI/Alturas paths. By stressing COI/Alturas to 4800 MW, North of John Day to 7800 MW, and PDCI to 3100 MW in the same base case, this report will prove that these paths do not have a simultaneous interaction with the Idaho-Northwest path at its proposed 2250 MW west-to-east rating. 4.2.2 Steady State Case Stressing The study of Idaho-Northwest v COI utilized the 16hs2a_2250idnw_N base case described in Section.4.1.2. Refer to Section 4.1.2 for a discussion on steady state case stressing. In the base case, COI and Alturas Project path flows are stressed to 4650 MW north-to-south and 150 MW north-to-south, respectively. Combining the two path flow totals 4800 MW of north-to-south flow south of Malin matching the current North of John Day v COI+NW/Sierra or PDCI nomogram. 4.2.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. Details for the severe/notable contingencies can be found below. Contingency #1 – Captain Jack-Olinda 500 kV This contingency results in overloading the Cotwdwap-OlindaW 230 kV line to 108% of its nominal rating (92% of emergency). Since the overload is less than the emergency rating of the 230 kV line, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 12: Post-transient results – N-1: Captain Jack-Olinda 500 kV Contingency #2 – N-1: Malin-Round Mtn #1 500 kV This contingency results in overloading the Malin-Round Mtn #2 500 kV line to 130% of its nominal rating (88% of emergency). The overloaded line, Malin-Round Mtn #2, is made of four different line Page 22 of 776 segments: (1) a series capacitor at Malin, (2) a line segment north of the Oregon-California border, (3) a line segment south of the Oregon-California border, and (4) a series capacitor at Round Mtn. The line segment south of the Oregon-California border has the lowest nominal rating (2200 Amps) and the line segment north of the Oregon-California border has the lowest emergency rating (3236 Amps). The table below compares the system today (Idaho-Northwest stressed to 1200 MW) to the system modeled in the base case (Idaho-Northwest stressed to 2250 MW). The base case includes the Hemingway-Boardman and Gateway West 500 kV lines, whereas the “system today” does not. Table 13: Post-transient results – N-1: Malin-Round Mtn #1 500 kV As can be seen from the table above, the Hemingway-Boardman 500 kV line improves the results of this contingency. Contingency #3 – N-1: Round Mtn-Table Mtn #1 500 kV This contingency results in overloading the Round Mtn-Table Mtn #2 500 kV line to 148% of its nominal rating (99% of emergency). Since the overload is less than the emergency rating of the 500 kV line, this contingency results in acceptable performance. The table below compares the system today (Idaho-Northwest stressed to 1200 MW) to the system modeled in the base case (Idaho-Northwest stressed to 2250 MW). The base case includes the Hemingway-Boardman and Gateway West 500 kV lines, whereas the “system today” does not. Table 14: Post-transient results – N-1: Round Mtn-Table Mtn #2 500 kV As can be seen from the table above, the Hemingway-Boardman 500 kV line improves the results of this contingency. Contingency #4 – N-2: Double Palo Verde This contingency results in only minor overloads to the two sets of series capacitors in the Grizzly- Summer Lake 500 kV line, and the two Round Mtn-Table Mtn 500 kV lines. Overloads to each of these elements are much less than their respective emergency ratings. Page 23 of 776 The Hemingway-Boardman 500 kV project coupled with the Gateway West project reduces the impedance of the in-land parallel path, slightly reducing the severity of this contingency on the COI after Northwest generation responds to the 2500+ MW deficiency. Contingency #5 – Malin-Round Mtn #1 & #2 500 kV This contingency results in overloading the Captain Jack-Olinda 500 kV line to 140% of its nominal rating (97% of emergency). Since the overload is less than the emergency rating of the 500 kV line, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 15: Post-transient results – N-1: Malin-Round Mtn #1 & #2 500 kV Conclusion No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 2250 MW west-to-east rating simultaneous with COI at 4800 MW north- to-south. 4.2.4 Voltage Stability The Idaho-Northwest v COI study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v COI study, all studied contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating, simultaneous with the COI path flows at 4650 MW north-to-south. Alturas Project flows were at 150 MW in the case. The 4650 MW north-to-south COI flow was established based on the North of John Day v COI+NW/Sierra or PDCI nomogram. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N base case can be found in Appendix A. Busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, Humboldt 345 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellowtail 230 kV. The tables below highlight a Page 24 of 776 sample of the reactive margins at Malin. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 16: Malin 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.88 -2002 Worst VQ contingency N-1: CAPTAIN JACK-OLINDA 500 KV 0.82 -2324 Worst VQ related to COI BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.86 -2377 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the COI path at the flow levels studied. 4.2.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. A write up of these results can be found in Section 4.1.5. No transient stability violations were observed. 4.2.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. Details for the severe/notable contingencies can be found below. Contingency #1 – Captain Jack-Olinda 500 kV This contingency does not have any associated RAS. Contingency #2 – N-1: Malin-Round Mtn #1 500 kV This contingency does not have any associated RAS. Contingency #3 – N-1: Round Mtn-Table Mtn #1 500 kV This contingency does not have any associated RAS. Contingency #4 – N-2: Double Palo Verde This contingency depresses the voltage at Malin, resulting in triggering operating of the FACRI. The FACRI RAS includes the insertion of the Fort Rock series capacitors in the 500 kV lines south of Grizzly, and insertion of shunt capacitor banks at Captain Jack 500 kV, Malin 500 kV, Olinda 500 kV, and Table Mtn 500 kV. FACRI will also remove shunt reactors at Captain Jack 500 kV, and Malin 500 kV. Page 25 of 776 See Appendix A for a list of actions taken in this contingency. Contingency #5 – Malin-Round Mtn #1 & #2 500 kV This double line loss is modeled according to the California Operating Studies Subcommittee Handbook. RAS associated with this contingency includes: 1) Northwest High Gen Drop RAS tripping at least 2400 MW of hydro generation at places such as Chief Jo, Coulee, and John Day. 2) Drop San Luis and CDWR pumps, if pumping. See Appendix A for a list of actions taken in this contingency. Page 26 of 776 4.3 Simultaneous Interaction Study: Idaho-Sierra, N-S (Path 16) Figure 6: Idaho-Northwest (Path 14) 2250 MW, West to East v. Idaho-Sierra (Path 16), North to South, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MWN of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MWAlturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 27 of 776 4.3.1 Background & Need for Simultaneous Interaction Studies The Idaho-Sierra transmission path (Path 16) is made up of single transmission line extending from Midpoint substation in southern Idaho, to Humboldt substation in northern Nevada. The project review group was concerned that after the addition of the Hemingway-Boardman 500 kV transmission project, N-1 and N-2 contingencies on COI 500 kV lines south of Malin may result in post- transient flow on Idaho-Sierra greater than that seen on the system today. The concern was that this additional flow would cause post-transient overloads on the low-voltage system around Humboldt. 4.3.2 Steady State Case Stressing The study of Idaho-Northwest v Idaho-Sierra utilized the 16hs2a_2250idnw_N base case. The Idaho- Northwest path is stressed to 2250 MW west-to-east simultaneous with the Idaho-Sierra path stressed to 500 MW north to south. The 16hs2a_2250idnw_N base case is described in Section 4.1.2. See Section 4.1.2 for the discussion on steady state case stressing. 4.3.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. There were not any contingencies that resulted in overloads or post-transient voltage deviation problems related to the Idaho-Sierra (Path 16) transmission path. The following table illustrates two contingencies of concern in further depth, the N-1: Malin-Round Mtn #1 and the N-2: Malin-Round Mtn #1 & #2. Table 17: COI contingencies impact on the Idaho-Sierra path Contingency Name A proper operation of the COI RAS is critical for such limited interaction with the Idaho-Sierra path, otherwise, the interaction would substantially increase. Comparing today’s Existing System to the Future System after the addition of the Hemingway-Boardman 500 kV transmission project, the loss of COI 500 kV lines do not result in a more severe impact to the Idaho-Sierra (Path 16) transmission path. See Section 4.1.3 for more base case post-transient results. 4.3.4 Voltage Stability The Idaho-Northwest v Idaho-Sierra study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). Page 28 of 776 PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Idaho-Sierra study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating, simultaneous with the Idaho-Sierra path flows at 500 MW north-to-south. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N base case can be found in Appendix A. The busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, Humboldt 345 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellow Tail 230 kV. The tables below highlight a sample of the reactive margins at Humboldt. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 18: Humboldt 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: HUMBOLDT-COYOTE CK 345 KV 0.70 -208 Worst VQ contingency BF IPC POPULUS-CHILL-HEMINGWAY 500 KV & HEM 500/230 XFMR 0.70 -457 Worst VQ related to Idaho Power BF IPC HEMINGWAY-SUMMER L 500 KV & HEM 500/230 XFMR 0.70 -467 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the Idaho-Sierra path at the flow levels studied. 4.3.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. A write up of these results can be found in Section 4.1.5. No transient stability violations were observed. 4.3.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. No contingencies resulted in severe or noteworthy overloads or post-transient voltage deviation problems related to the Idaho-Sierra (Path 16) transmission path. Page 29 of 776 4.4 Simultaneous Interaction Study: Montana-Idaho, N-S (Path 18) Figure 7: Idaho-Northwest (Path 14) 2250 MW, West to East v. Montana-Idaho (Path 18), North to South, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MW N of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MW Alturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 30 of 776 4.4.1 Background & Need for Simultaneous Interaction Studies The Montana-Idaho transmission path (Path 18) is made up of two transmission lines: (1) a 230 kV line that extends between Brady-Antelope-Amps-Peterson-Mill Creek, otherwise known as the “Amps 230 kV line” and (2) a 161 kV line that extends between Jefferson-Big Grassy-Dillon, otherwise known as the “Dillon 161 kV line”. In the 16hs2a_2250idnw_N base case, the Amps 230 kV line is flowing at 250 MW and the Dillon 161 kV line is flowing at 86 MW, pre-contingency. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the Amps 230 kV line increases to 268 MW and the loading on the Dillon line increases to 106 MW, good for an 7.2 % and 23.3% increase, respectively. Due to this sizable increase in path transfers (11% of the total north-to-south path rating), the Idaho- Montana path may have a simultaneous interaction with the Idaho-Northwest path. 4.4.2 Steady State Case Stressing The study of Idaho-Northwest v Montana-Idaho utilized the 16hs2a_2250idnw_N base case described in Section.4.1.2. In the base case, Montana-Idaho path flows are stressed to 337 MW north-to-south. Refer to Section 4.1.2 for more details on steady state case stressing. 4.4.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. Details for the severe/notable contingencies can be found below. Contingency #1 – N-1: Hemingway-Grassland 500 kV This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 110% of its nominal rating (98% of emergency). Refer to the table below for additional overloads caused by this contingency. Since all overloads are less than the emergency ratings of the respective element, this contingency results in acceptable performance. Table 19: Post-transient results – N-1: Hemingway-Grassland 500 kV Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 110% (1237 Amp Rating) 98% (1396 Amp Rating) Oxbow – Lolo 230 kV 109% (920 Amp SOL) 96% (1047 Amp Rating) Mill Creek – Peterson 230 kV 103% (800 Amp Rating) 69% (1200 Amp Rating) This contingency also results in post-transient voltage deviations greater than 5% at Amps and Peterson 230 kV busses. WECC System Performance Criteria does not allow post-transient voltage deviations of greater than 5% for N-1 contingencies. The plan of service for the Hemingway-Boardman 500 kV Transmission project, detailed in Section 2.4, includes a new 31.7 MVAr shunt capacitor connected to the Peterson 230 kV bus to be switched post-contingency (the existing 31.7 MVAr shunt capacitor is in- service pre-contingency). The contingency labeled “N-1: Hemingway-Grassland 500 kV + PTSN Shunt” switches this new Peterson 230 kV shunt capacitor, post-contingency, in response to low voltage on the Page 31 of 776 Peterson 230 kV bus. The table below details the performance comparison of the N-1: Hemingway- Grassland 500 kV outage with and without switching the additional shunt capacitor at Peterson. Table 20: Post-transient voltage deviation comparison – N-1: Hemingway-Grassland 500 kV Bus N-1: Hemingway-Grassland 500 kV N-1: Hemingway-Grassland 500 kV + PTSN Peterson 230 kV -7.4% -3.6% Amps 230 kV -6.2% -3.8% The results indicate that switching a 31.7 MVAr shunt capacitor, post contingency, at Peterson 230 kV bus allows this contingency to meet WECC System Performance Criteria. Contingency #2 – N-1: Dworshak-Hatwai 500 kV + RAS This contingency results in post-transient voltage deviations greater than 5% at Peterson 230 kV and 69 kV busses. The table below compares the system today (Idaho-Northwest stressed to 1200 MW) to the system modeled in the base case (Idaho-Northwest stressed to 2250 MW). The base case includes the Hemingway-Boardman and Gateway West 500 kV lines, whereas the “system today” does not. Table 21: Post-transient voltage deviation – N-1: Dworshak-Hatwai 500 kV + RAS Bus 1200 Case (System Today) % Voltage Deviation 2250 Case (Future System) % Voltage Deviation Peterson 230 kV -5.33% -5.19% Peterson 69 kV -5.49% -5.31% The results indicate that system performance improves after the addition of the Hemingway-Boardman 500 kV line. As discussed in Section 2.4, the plan of service for the Hemingway-Boardman 500 kV Transmission project, detailed in Section 2.4, includes a new 31.7 MVAr shunt capacitor connected to the Peterson 230 kV bus to be switched post-contingency (the existing 31.7 MVAr shunt capacitor is in- service pre-contingency). The contingency “N-1: Dworshak-Hatwai 500 kV + RAS + PTSN” demonstrates that switching this new shunt capacitor fixes this pre-existing problem. Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 2250 MW west-to-east rating simultaneous with Montana-Idaho at 337 MW north-to-south. 4.4.4 Voltage Stability The Idaho-Northwest v Montana-Idaho study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed Page 32 of 776 rating. In the Idaho-Northwest v Idaho-Montana study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating, simultaneous with the Montana-Idaho path at its 337 MW north-to-south rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N base case can be found in Appendix A. The busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, Humboldt 345 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellow Tail 230 kV. The tables below highlight a sample of the reactive margins at Mill Creek. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 22: Mill Creek 230 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.87 -274 Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500 kV 0.80 -422 Worst VQ related to Northwest BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.80 -440 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the Montana-Idaho path at the flow levels studied. 4.4.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. A write up of these results can be found in Section 4.1.5. No transient stability violations were observed. 4.4.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. Details for the notable contingencies can be found below. Notable Contingency #1 – N-1: Hemingway-Grassland 500 kV This contingency opens the Hemingway-Grassland 500 kV line. After the loss of this line and transformer, switched VAr devices modeled at Dillon 69 kV, and Peterson 230 kV would switch in-service Page 33 of 776 due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 23: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Notable Contingency #2 – N-1: Dworshak-Hatwai 500 kV + RAS The “+ RAS” designation in the contingency label refers to the RAS action take at Dworshak for this contingency. In this case, a contingency block “RAS Dworshak Open PCB XJ-7” was implemented to open the 13.8 kV breaker at Dworshak, which splits the DWOR 1 and DWOR 2 busses and associated generation at each bus. The contingency also included the action to open the Garrison #s shunt reactor due to depressed voltages in the area. In reality, additional shunt devices may switch that are not modeled as part of this contingency. Page 34 of 776 4.5 Simultaneous Interaction Study: Montana Southeast, N-S (Path 80) Figure 8: Idaho-Northwest (Path 14) 2250 MW, West to East v. Montana Southeast (Path 80), North to South, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MWN of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MWAlturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 35 of 776 4.5.1 Background & Need for Simultaneous Interaction Studies The Montana Southeast path is made up of three 230 kV lines and one 161 kV line connecting the Montana transmission system to the northern Wyoming transmission system. In the 16hs2a_2250idnw_N base case, the flow on the Montana Southeast path is 600 MW north-to-south, pre-contingency. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the Montana Southeast path increases to 683 MW, a 14% increase on the path. Due to this sizable increase in path transfers, the Montana Southeast path may have a simultaneous interaction with the Idaho- Northwest path. 4.5.2 Steady State Case Stressing The study of Idaho-Northwest v Montana Southeast utilized the 16hs2a_2250idnw_N base case described in Section 4.1.2. In the base case, Montana Southeast path flows are stressed to 600 MW north-to-south. Refer to Section 4.1.2 for more details on steady state case stressing. 4.5.3 Post Transient Results There were not any contingencies that resulted in overloads or post-transient voltage deviation problems related to the Montana Southeast (Path 80) transmission path. Some of the studied contingencies, such as the N-1 loss of Hemingway-Boardman 500 kV, did impact the voltage on the 230 kV busses along the Yellowtail-Frannie-Garland-OreBasin 230 kV line (3-4%), but none of the busses had a post-transient voltage deviation greater than 5%. 4.5.4 Voltage Stability The Idaho-Northwest v Montana Southeast study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Montana Southeast study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its 2250 MW rating, simultaneous with the Montana Southeast path at its 600 MW north-to-south rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N base case can be found in Appendix A. The busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, Humboldt 345 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellow Tail 230 kV. The tables below Page 36 of 776 highlight a sample of the reactive margins at Yellowtail. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 24: Yellowtail 230 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.78 -218 Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.78 -234 Worst VQ related to Northwest BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.78 -239 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the Montana Southeast path at the flow levels studied. 4.5.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. A write up of these results can be found in Section 4.1.5. No transient stability violations were observed. 4.5.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. No contingencies resulted in overloads or post-transient voltage deviation problems related to the Montana Southeast (Path 80) transmission path. Page 37 of 776 4.6 Simultaneous Interaction Study: North of John Day (Path 73) Figure 9: Idaho-Northwest (Path 14) 2250 MW, West to East v. North of John Day (Path 73), Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MWN of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MWAlturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 38 of 776 4.6.1 Background & Need for Simultaneous Interaction Studies The North of John Day path (Path 73) is made up of six 500 kV transmission lines: Sacajawea Tap- McNary, Ashe-Slatt, Ashe-Marion, Wautoma-Rock Creek, Wautoma-Big Eddy, and Raver-Paul. This path has a 7800 MW north-to-south rating. COI (Path 66), Alturas Project (Path76), North of John Day (Path 73), PDCI (Path 65), and Hemingway- Summer Lake (Path 75) are all interrelated through the North of John Day v COI+Alturas or PDCI nomogram. Historically, with higher west-to-east flow on the Hemingway-Summer Lake 500 kV line, this nomogram has limited the flow south of Malin on the COI/Alturas paths. By stressing COI/Alturas to 4800 MW, North of John Day to 7800 MW, and PDCI to 3100 MW in the same base case, this report will prove that these paths do not have a simultaneous interaction with the Idaho-Northwest path at its proposed 2250 MW west-to-east rating. 4.6.2 Steady State Case Stressing The study of Idaho-Northwest v North of John Day utilized the 16hs2a_2250idnw_N base case described in Section 4.1.2. In the base case, North of John Day path flows are stressed to 7800 MW north-to-south. Refer to Section 4.1.2 for more details on steady state case stressing. 4.6.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. Details for the notable contingencies can be found below. Critical Contingency – N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS This contingency results in overloading the John Day-Grizzly #1 500 kV line to 101% of its nominal and emergency rating. The table below compares the system today (Idaho-Northwest stressed to 1200 MW) to the system modeled in the base case (Idaho-Northwest stressed to 2250 MW). The base case includes the Hemingway-Boardman and Gateway West 500 kV lines, whereas the “system today” does not. Table 25: Post-transient results – N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS Existing System (1200 Case) Future System (2250 Case) Element Pre-Cont. % Emerg. Rating Post-Cont. % Emerg. Rating Difference Pre-Cont. % Emerg. Rating Post-Cont. % Emerg. Rating Difference John Day-Grizzly #1 500 kV 58% 115% 57% 54% 101% 47% The performance for this contingency is acceptable since the overload appears to be the result of case stressing, not the addition Hemingway-Boardman 500 kV line. Performance for this contingency will improve (as shown in the table above) after the addition of Hemingway-Boardman; Boardman- Hemingway-Summer Lake acts as an additional parallel path to John Day-Grizzly #1 500 kV that did not exist prior to the addition of Hemingway-Boardman 500 kV. Page 39 of 776 Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 2250 MW west-to-east rating simultaneous with North of John Day at 7800 MW north-to-south. See Section 4.1.3 for more base case post-transient results. 4.6.4 Voltage Stability The Idaho-Northwest v North of John Day study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v North of John study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating, simultaneous with the North of John Day path flows at 7800 MW north-to-south. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N base case can be found in Appendix A. The busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, Humboldt 345 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellow Tail 230 kV. The tables below highlight a sample of the reactive margins at Hanford and John Day. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 26: Hanford 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: DOUBLE PALO VERDE 0.96 -1699 Worst VQ contingency N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.94 -1990 Worst VQ related to N of John Day BF HEM-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.93 -3446 Worst VQ related to Idaho-Northwest Table 27: John Day 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.99 -1126 Worst VQ contingency N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.98 -1276 Worst VQ related to N of John Day N-1: HEMINGWAY-GRASSLAND 500 KV 0.98 -1639 Worst VQ related to Idaho-Northwest Page 40 of 776 Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the North of John Day path at the flow levels studied. 4.6.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. A write up of these results can be found in Section 4.1.5. No transient stability violations were observed. 4.6.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. Details for the notable contingencies can be found below. Critical Contingency – N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS This double line loss results in triggering the “High Gen Drop” remedial action scheme in the Northwest. In this case, High Gen Drop is armed to trip at least 2400 MW of hydro generation at Chief Jo, Coulee, and John Day. Page 41 of 776 4.7 Simultaneous Interaction Study: PDCI, N-S (Path 65) Figure 10: Idaho-Northwest (Path 14) 2250 MW, West to East v. PDCI (Path 65), North to South, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MWN of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MWAlturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 42 of 776 4.7.1 Background & Need for Simultaneous Interaction Studies The Pacific DC Intertie (Path 65) is made up of a single +/-500 kV DC transmission line from Celilo substation, near The Dalles, Oregon, to Sylmar substation in the Los Angeles basin. COI (Path 66), Alturas Project (Path76), North of John Day (Path 73), PDCI (Path 65), and Hemingway- Summer Lake (Path 75) are all interrelated through the North of John Day v COI+Alturas or PDCI nomogram. Historically, with higher west-to-east flow on the Hemingway-Summer Lake 500 kV line, this nomogram has limited the flow south of Malin on the COI/Alturas paths. By stressing COI/Alturas to 4800 MW, North of John Day to 7800 MW, and PDCI to 3100 MW in the same base case, this report will prove that these paths do not have a simultaneous interaction with the Idaho-Northwest path at its proposed 2250 MW west-to-east rating. 4.7.2 Steady State Case Stressing The study of Idaho-Northwest v PDCI utilized the 16hs2a_2250idnw_N base case described in Section 4.1.2. In the base case, PDCI path flow is stressed to 3100 MW north-to-south. Refer to Section 4.1.2 for more details on steady state case stressing. 4.7.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. Details for the notable contingencies can be found below. Notable Contingency – N-2: DC Bipole The table below presents the post transient results for the N-2: DC Bipole contingency. This contingency results in overloading the Ponderosa-Summer Lake 500 kV line to 117% of its nominal rating (88% of emergency). The table compares the system today (Idaho-Northwest stressed to 1200 MW) to the system modeled in the base case (Idaho-Northwest stressed to 2250 MW). The base case includes the Hemingway-Grassland and Gateway West 500 kV lines, whereas the “system today” does not. Table 28: Post-transient results – N-2: DC-Bipole Page 43 of 776 The results indicate that system performance either remains the same, or improves, after the addition of the Hemingway-Boardman 500 kV line. Since no elements are over their emergency ratings, performance is acceptable for this contingency. Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 2250 MW west-to-east rating simultaneous with PDCI at 3100 MW north- to-south. 4.7.4 Voltage Stability The study results indicate that the system has sufficient power margin and reactive margin for all contingencies. See the base case results Section 4.1.4, COI results Section 4.2.4, and North of John Day results Section 4.6.4 for voltage stability information related to the northwest. VQ results for the 16hs2a_2250idnw_N case can be found in Appendix A. Given the explanation in Sections 4.1.4, 4.2.4, and 4.6.4, there is not a voltage stability interaction between the Idaho-Northwest path and the PDCI path at the flow levels studied. 4.7.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_N case can be found in Appendix A. A write up of these results can be found in Section 4.1.5. No transient stability violations were observed. 4.7.6 Remedial Action Schemes For the 16hs2a_2250idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix A. Details for the notable contingencies can be found below. Notable Contingency – N-2: DC Bipole This contingency opens both poles of the PDCI line. Three contingency blocks, “PDCI LOSS GEN DROP,” “PDCI SCE SWITCHED SHUNT” and “PDCI NW Reactive Insert” were implemented in the contingency. These three contingency blocks were provided as part of the WECC Phase 2 study process to implement as part of this contingency. The “PDCI LOSS GEN DROP” contingency block was implemented to reduce the injection group “RAS PDCI Gen Drop Units” by an amount associated with COI and PDCI flows, less 300 MW, in generator merit order by tripping. The “RAS PDCI Gen Drop Units” is comprised of 81 units in the Northwest. For this case, based on the given COI and PDCI flows, the RAS action initiated tripping of 2550 MW. The merit order is a generator tripping order established by Colombia Grid and/or BPA and implemented into the load flow software. In this case, all of the generation tripping occurred at Chief Jo and Coulee. Page 44 of 776 Details about the “PDCI SCE SWITCHED SHUNT”, and “PDCI NW Reactive Insert” contingency blocks are detailed in the tables below: Table 29: “PDCI SCE SWITCHED SHUNT” Actions for N-2: DC Bipole Table 30: “PDCI NW Reactive Insert” Actions for N-2: DC Bipole Table 31: Shunt Capacitor Switching in N-2: DC Bipole In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 45 of 776 4.8 Simultaneous Interaction Study: West of Hatwai (Path 6) Figure 11: Idaho-Northwest (Path 14) 2250 MW, West to East v. West of Hatwai (Path 6), East to West, Base Case 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 228.3 Mvar 1.09 puPONDROSA 0.0 Mvar 1 4 7 0 M W - 1 7 1 M v a r 1 3 5 9 M W - 2 0 7 M v a r 1 6 0 9 M W - 2 4 2 M v a r 1497 MW -180 Mvar 273 MW 68 Mvar 238 MW 63 Mvar 333 MW 64 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 55.0 Mvar 1.04 puHAT ROCK 1.04 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.05 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.04 puDRYCREEK 72.6 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.03 puIDAHO-NV 1.03 puKINPORT 0.0 Mvar 1.09 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 1 2 6 M W - 7 0 M v a r 1 5 6 5 M W - 1 7 5 M v a r 1653 MW -175 Mvar 1657 MW -178 Mvar 429 MW -36 Mvar 811 MW -12 Mvar 828 MW -54 Mvar 729 MW -95 Mvar 382 MW -90 Mvar 277 MW 26 Mvar 1111 MW -188 Mvar 1130 MW 148 Mvar 26 MW 174 Mvar 2 8 2 M W - 2 3 M v a r 26 MW 189 Mvar 253 MW 25 Mvar 859 MW 155 Mvar 80 MW 29 Mvar 68 MW 26 Mvar 646 MW 115 Mvar 1.05 puANTICLIN 552 MW 21 Mvar 551 MW 19 Mvar 143 MW 64 Mvar 123 MW 52 Mvar 321 MW 19 Mvar 253 MW 25 Mvar 47 MW 33 Mvar 343 MW 40 Mvar 711 MW -186 Mvar 66 MW -20 Mvar 85 MW 26 Mvar 107 MW 28 Mvar 625 MW 137 Mvar 0 MW 0 Mvar 458 MW -290 Mvar 774 MW -54 Mvar 237 MW -35 Mvar 162 MW -34 Mvar 161 MW -34 Mvar 153 MW 4 Mvar 157 MW -27 Mvar 2 9 5 M W 2 2 M v a r 52 MW 1 Mvar 194 MW -42 Mvar 52 MW 35 Mvar 74 MW 9 Mvar 58 MW 6 Mvar 61 MW 11 Mvar 4 4 4 M W - 1 1 M v a r HORSEFLT 1.01 puBOISEBCH 95.6 Mvar 0.0 Mvar 1.02 puONTARIO 157 MW -27 Mvar 15 MW 58 Mvar 283 MW 14 Mvar 2 8 6 M W - 1 4 M v a r 74 MW -13 Mvar 332 MW -37 Mvar 257 MW -15 Mvar 257 MW -15 Mvar 265 MW -20 Mvar 268 MW -33 Mvar 196 MW -35 Mvar 254 MW -42 Mvar 0 M W - 4 3 M v a r 0 M W - 4 3 M v a r 779 MW -133 Mvar 288 MW 158 Mvar 303 MW -6 Mvar 582 MW -67 Mvar 630 MW -15 Mvar 585 MW -47 Mvar 532 MW 17 Mvar 524 MW 8 Mvar 515 MW 9 Mvar 777 MW -46 Mvar 795 MW -48 Mvar 1395 MW -180 Mvar 1 5 9 M W 1 5 M v a r 876 MW -66 Mvar 1 3 6 4 M W - 2 4 M v a r 1 3 3 8 M W 5 M v a r 1 1 5 6 M W - 3 5 M v a r 1157 MW -131 Mvar ID-NW = -2250 MW Grassland = -1301 MW Summer Lake = -333 MW Lolo = -286 MW Walla Walla = -176 MW LaGrande = -162 MW Midpoint West = -1074 MW Borah West = 66 MW Idaho-Sierra = 282 MW N of John Day = 5603 MW COI = 4111 MW PDCI = 3101 MWID-MT = -337 MW W of McNary = 2704 MW W of Slatt = 4033 MW Alturas Project = 151 MW Path C = -1608 MW Montana Southeast = 599 MW TOT 2B1 = 45 MW TOT 2C = 168 MW 334 MW -73 Mvar 429 MW 55 Mvar 865 MW -1 Mvar 1038 MW -6 Mvar 1 M W -81 M v a r 8 3 6 M W - 1 9 3 M v a r 1 3 0 1 M W 9 3 M v a r 1253 MW -251 Mvar Page 46 of 776 4.8.1 Background & Need for Simultaneous Interaction Study Background The West of Hatwai transmission path (Path 6) is made up of two 500 kV lines, four 230 kV lines, four 115 kV lines, and a 115/69 kV transformer connecting northern Idaho and eastern Washington to the main Northwest system in central Washington and northern Oregon. The West of Hatwai path has an SOL rating of 4250 MW east-to-west year round. The Idaho-Northwest and the West of Hatwai paths cannot be stressed to their limits simultaneously. When stressing the case, power is scheduled from Montana to the Northwest to stress Montana- Northwest and West of Hatwai paths, and then scheduled from the Northwest into Idaho and Utah to stress Idaho-Northwest path. This power scheduling is effectively causing a very large loop, putting angular pressure on the two other transmission paths out of Montana: Montana-Idaho (Path 18) and Montana Southeast (Path 80). The Montana-Idaho path is what limits the simultaneous capability of the Idaho-Northwest path and the West of Hatwai path. The 161 kV line, phase shifted at Jefferson, becomes the limiting element when 30 degrees is insufficient to hold back flow on the path, and the 161 kV line goes over its 87 MW rating. Although the Montana-Idaho 161 kV line is the limiting element between the Idaho-Northwest and West of Hatwai paths, flow on West of Hatwai does not have a significant impact on the Montana-Idaho 161 kV line. Flow on the 161 kV line is associated with Idaho-Northwest path flows, and Montana area generation. Any nomogram developed between the Idaho-Northwest and West of Hatwai paths that is related to the Montana-Idaho 161 kV line would be ineffective, due to the lack of a correlation between West of Hatwai flow, and Montana-Idaho flow. Historical Real-Life Flow Interaction between Idaho-Northwest & West of Hatwai Since 1998, the West of Hatwai (WoH) path has never exceeded 3600 MW east-to-west. Below is a table illustrating the real-life interaction between the Idaho-Northwest path and the West of Hatwai path. Table 32: Idaho-Northwest v West of Hatwai, Real-life interaction since 1998 At the West of Hatwai all-time peak, Idaho-Northwest was flowing 1066 MW east-to-west (not west-to- east as is being studied in this section). When West of Hatwai flows were greater than 2800 MW, Idaho- Northwest reached a maximum value of 276 MW west-to-east. At the Idaho-Northwest maximum, West of Hatwai was only flowing at 827 MW east-to-west. When Idaho-Northwest flows were greater than 1000 MW, West of Hatwai reached a maximum value of 2048 MW. Page 47 of 776 Since 1998, actual Idaho-Northwest east-to-west flow has ranged between -1136 MW and 2323 MW; actual West of Hatwai flow has ranged between -3590 MW and 1682 MW. The top 1000 hours for Idaho-Northwest range between -1136 MW & -853 MW; for West of Hatwai -3590 MW & -2357 MW. Figure 4 below depicts the top 1000 hours for each path verse the corresponding alternate path (2000 total points). The red square represents the point at which we are studying Idaho-Northwest v West of Hatwai in the benchmark case. Figure 12: Idaho-Northwest v West of Hatwai, 2000 critical data points (hourly data since 1998) Need for Simultaneous Interaction Studies The Hemingway-Boardman 500 kV Project Review Group requested that a simultaneous interaction study be performed between the Idaho-Northwest path and the West of Hatwai path. As mentioned in previous paragraphs, it is not possible to stress Idaho-Northwest to 2250 MW, west-to-east, simultaneous with West of Hatwai at 4250 MW, east-to-west, due to the Montana-Idaho 161 kV line limitation. Historical flow data in Table 29, representing ~14 years of interaction between the paths and Figure 4 above, also indicate that the two paths do not interact in a manner where both paths would be at their simultaneous limit. This Phase II rating study is required to prove that the Hemingway-Boardman 500 kV line, and the Idaho- Northwest 2250 MW up-rate, does not negatively impact the West of Hatwai path. In order to show that the Hemingway-Boardman 500 kV line improves the interaction between the Idaho-Northwest path, and the West Hatwai path, two cases were developed. The first case represents the system as it is today, with Idaho-Northwest stressed to 1200 MW, west-to-east, and West of Hatwai stressed to 3400 MW, -1250.00 -1000.00 -750.00 -500.00 -250.00 0.00 250.00 500.00 750.00 1000.00 1250.00 1500.00 1750.00 0.00 1000.00 2000.00 3000.00 4000.00 Id a h o -No r t h w e s t F l o w West of Hatwai Flow (MW) Idaho-Northwest v West of Hatwait (2000 data points) Page 48 of 776 east-to-west. The second case represents the system after the addition of the Hemingway-Boardman 500 kV line, with Idaho-Northwest stressed to 2250 MW, west-to-east, and West of Hatwai stressed to the same 3400 MW, east-to-west. 4.8.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case names for this study are: 16hs2a_3400WoH_2250idnw_N & 16hs2a_3400WoH_1200idnw_N. Step-by-step development of the 16hs2a_WoH_2250idnw_N base case: Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. The West of Hatwai path is only flowing at 727 MW in this case. Step 2: Reduce load in the Spokane area. West of Hatwai is generally stressed during light load conditions, whereas the Idaho-Northwest path is generally stressed during heavy load (peak summer day) conditions. In order to stress West of Hatwai simultaneous with Idaho-Northwest, the load pattern in the Spokane area will have to match a light load condition, and Idaho/Utah will have to match a heavy load condition. The Avista and Spokane area load was modified to approximately match a 16 light autumn WECC base case (used in the export case). Step 3: Increase generation in Western Montana, Northern Idaho, and Eastern Washington. In order to stress the West of Hatwai path, generation around the Spokane area has to be maximized. Generators in the Avista and Spokane area, including Boundary and Dworshak, are set to their maximum allowable values in the powerflow case. Step 4: Insert all series reactors into the Oxbow-Lolo 230 kV line. Place in-service the Oxbow-Lolo 230 kV line 10 ohm series reactor and a 20 ohm series reactor. Step 5: Reduce Coulee & Chief Jo Generation. Reducing Coulee and Chief Jo generation helps to better spread the loading across the West of Hatwai path. Generation from Oregon and California is scheduled in to replace the central Page 49 of 776 Washington generation. Moving generation from central Washington to Oregon and California also reduces the angle between the Idaho system and the Montana system. This will allow more generation to be scheduled into the Northwest from Montana in the next step. Step 6: Schedule power in from Montana. The last step to stress the West of Hatwai path is to schedule power into the Northwest from Montana. Unfortunately, with Idaho-Northwest stressed to its proposed 2250 MW rating, attempting to stress West of Hatwai by scheduling power into the Northwest from Montana quickly results in overloading the Jefferson 161 kV path even with the Jefferson 161 kV phase shifter at its full 30 degree phase angle, hindering flow. The Jefferson 161 kV path is rated for 87 MW and extends from Mill Creek-Dillon-Big Grassy-Jefferson-Goshen. This line is metered at Big Grassy on the Dillon-Big Grassy section of 161 kV line. The Jefferson 161 kV line is at its rating when the West of Hatwai path reaches 3400 MW east-to-west, simultaneous with Idaho- Northwest at 2250 MW west-to-east. Step-by-step development of the 16hs2a_WoH_1200idnw_N base case: This base case was developed as a comparison/benchmark case to the 16hs2a_WoH_2250idnw_N base case. The 16hs2a_WoH_1200idnw_N base case is meant to represent the system as it is today with heavy West of Hatwai east-to-west flow simultaneous with heavy west-to-east flow on the Idaho- Northwest path. Hemingway-Boardman, Gateway West, and Cascade crossing are not modeled in this base case. Step 1: Begin with the 16hs2a_WoH_2250idnw_N base case. Utilize the base case developed earlier in this Section of the report. Step 2: Remove elements from the base case to create a “System Today” case Remove the following elements from the 16hs2a_WoH_2250idnw_N case: (1) Hemingway- Boardman 500 kV, (2) Stage One of Gateway West, (3) Cascade Crossing, and (4) the Longhorn substation & associated wind projects. Step 3: Reduce Idaho-Northwest transfers to 1200 MW west-to-east. This is best accomplished by reducing Northwest generation and increasing Idaho and PacifiCorp East (PACE) area generation. By removing Longhorn, and the associated wind generation, Northwest generation was already reduced significantly. To replace Northwest generation, PacifiCorp East (PACE) and Idaho area peaking generation was switched in-service and scheduled to the Northwest. Step 4: Re-stress West of Hatwai By significantly reducing transfers between the Northwest and Idaho in Step 3, West of Hatwai flow increases. Removing the Hemingway-Boardman 500 kV line from service, however, Page 50 of 776 significantly overloads the Jefferson 161 kV phase shifter. Adjusting the West of Hatwai path back to 3400 MW east-to-west (to match the 16hs2a_WoH_2250idnw_N case) and the Idaho- Northwest path to its 1200 MW west-to-east rating, resulted in the same flow through the Jefferson 161 kV line as the 16hs2a_WoH_2250idnw_N base case. 4.8.3 Post Transient Results Post-transient contingency results for the 16hs2a_WoH_2250idnw_N & 16hs2a_WoH_1200idnw_N base cases can be found in Appendix C. Details for the notable contingencies can be found below. Severe Post-Transient Contingency #1 – N-1: Hemingway-Grassland 500 kV +PTSN Shunt This is the worst N-1 contingency associated with the Idaho-Northwest transmission path (Grassland & Boardman are the same substation). This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 106.1% of its nominal rating (94% of emergency). Since the overload is less than the emergency ratings of the Brownlee-Hells Canyon 230 kV line, this contingency results in acceptable performance. Severe Post-Transient Contingency #2 – BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 This is the limiting contingency for the Idaho-Northwest path in the west-to-east direction. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 117% of its nominal rating (104% of emergency). Since the overload is greater than the Brownlee-Hells Canyon 230 kV line’s emergency rating, this contingency results in unacceptable performance. This contingency also results in post-transient voltage deviations between 5-10% at Hemingway, LaGrande & Bowmont 230 kV and Bowmont, Chestnut & Happy Valley 138 kV. WECC System Performance Criteria allows for post-transient voltage deviations of up to 10% for N-2 contingencies. Refer to the table below for more information about the overloads caused by this contingency. Table 33: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading (Limit A) Emergency % Loading (Limit B) Brownlee-Hells Canyon 230 kV 117% (1237 Amp Rating) 104%(1396 Amp Rating) Oxbow – Lolo 230 kV 108% (920 Amp SOL) 95% (1047 Amp Rating) Mill Creek – Peterson 230 kV 101% (800 Amp Rating) 67% (1200 Amp Rating) In order to avoid overloading the Oxbow-Lolo 230 kV line, both series reactors at Copperfield had to be inserted in the base case, pre-contingency. This contingency, resulting in post-transient overloads exceeding the Hells Canyon-Brownlee emergency rating, identifies the need to operate with the Walla Walla 230 kV series capacitor bypassed in this configuration (high West of Hatwai and Idaho-Northwest). Bypassing the Walla Walla series capacitor during spring conditions with high hydro generation in the Northwest is a common occurrence. Rerunning this contingency with the Walla Walla series capacitor bypassed results in acceptable post-transient performance. Page 51 of 776 Severe Post-Transient Contingency #3 – N-2: DC-BIPOLE This contingency, after the addition of the Hemingway-Boardman 500 kV line, results in similar performance to the system today. See Section 4.7.3 for a more detailed discussion on this contingency. Severe Post-Transient Contingency #4 – N-2: Double Palo Verde This contingency, after the addition of the Hemingway-Boardman 500 kV line, results in similar performance to the system today. See Section 4.2.3 for a more detailed discussion on this contingency Montana-Northwest & West of Hatwai Contingencies The Hemingway-Boardman 500 kV project has little effect on the contingencies related to the Montana- Northwest path and the West of Hatwai path. See the results in the Appendix for additional details. Conclusions The post transient analysis indicated that a breaker failure at Hemingway substation resulting in loss of the Midpoint-Hemingway 500 kV transmission line and the Hemingway 500/230 kV transformer results in an unacceptable overload on the Hells Canyon-Brownlee 230 kV line. This issue can be solved by operating the system with the Walla Walla series capacitor bypassed (as the system is operated today during most spring seasons). Aside from the breaker failure contingency at Hemingway substation, historic flow levels and post- transient contingency results do not indicate that the Idaho-Northwest path and the West of Hatwai path have a simultaneous interaction at the flow levels studied. 4.8.4 Voltage Stability The Idaho-Northwest v West of Hatwai study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v West of Hatwai study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2362.5MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating simultaneous with West of Hatwai at 3400 MW. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_3400WoH_2250idnw_N base case can be found in Appendix C. The busses studied utilizing VQ Analysis are: Bell 500 kV, Brownlee 230 kV, Hatwai 500 kV, Hemingway 500 kV, and Page 52 of 776 Taft 500 kV. The tables below highlight a sample of the reactive margins at these busses. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 34: 16hs2a_3400WoH_2250idnw_N base case reactive margin results (sample) Contingencies V @ Qmin Margin (MVAr) Comments Be l l N-1: BELL-COULEE 500 KV 0.88 -918 Worst VQ contingency N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.89 -1569 Worst VQ related to Idaho Power BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.89 -1671 Worst VQ related to Idaho-NW Br o w n l e e BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.89 -350 Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.89 -491 2nd Worst VQ contingency BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.88 -552 3rd Worst VQ contingency Ha t w a i N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV + RAS OPEN 69 KV 0.78 -1059 Worst VQ contingency N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.85 -1746 Worst VQ related to Idaho Power BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.85 -1796 Worst VQ related to Idaho-NW He m i n g w a y N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.86 -1193 Worst VQ contingency BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.82 -1394 2nd Worst VQ contingency BUS: SUMMER LAKE 500 KV 0.82 -1441 3rd Worst VQ contingency Ta f t N-2: TAFT-BELL & TAFT-DWORSKAK 500 KV + RAS 0.98 -471 Worst VQ contingency N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.95 -1122 Worst VQ related to Idaho Power BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.95 -1152 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the West of Hatwai path at the flow levels studied. 4.8.5 Transient Stability Transient stability contingency results for the 16hs2a_3400WoH_2250idnw_N case can be found in Appendix C. The 16hs2a_3400WoH_2250idnw_N base case was the basis for all transient stability study results for this Hemingway-Boardman v West of Hatwai Simultaneous Interaction Study. All contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. Page 53 of 776 4.8.6 Remedial Action Schemes For the 16hs2a_3400WoH_2250idnw_N case, each contingency, and the associated switching (RAS), is documented in Appendix C. Details for the notable contingencies can be found below. Severe Post-Transient Contingency #1 – N-1: Hemingway-Grassland 500 kV +PTSN Shunt After the loss of this line, switched VAr devices modeled at Dillon 69 kV, OreBasin 34.5 kV and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post- transient contingency run. Table 35: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV + PTSN Shunt In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #2 – BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 After the loss of this line and transformer, switched VAr devices modeled at Peterson 230 kV, Dillon 69 kV, Harney 115 kV, Quartz 138 kV, Midpoint 500 kV and North Powder 34.5 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 36: Shunt Capacitor Switching in BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #3 – N-2: DC-BIPOLE See Section 4.7.6 for a write up on the RAS associated with the loss of the PDCI. Page 54 of 776 Severe Post-Transient Contingency #4 – N-2: Double Palo Verde This contingency depresses the voltage at Malin, resulting in triggering operating of the FACRI. FACRI includes the insertion of the Fort Rock series capacitors in the 500 kV lines south of Grizzly, and insertion of shunt capacitor banks at Captain Jack 500 kV, Malin 500 kV, Olinda 500 kV, and Table Mtn 500 kV. FACRI will also remove shunt reactors at Captain Jack 500 kV, and Malin 500 kV. See Appendix C for a list of actions taken in this contingency. Page 55 of 776 4.9 Simultaneous Interaction Study: MSTI & SWIP (SWIP South – 1500 MW) Figure 13: Idaho-Northwest (Path 14) 2250 MW, West to East, MSTI & SWIP Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 445.3 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 9 M W - 1 3 1 M v a r 1 4 9 8 M W - 1 6 5 M v a r 1 7 2 8 M W - 2 1 2 M v a r 1615 MW -158 Mvar 284 MW 62 Mvar 248 MW 59 Mvar 289 MW 70 Mvar 1.02 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD447.6 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT -85.7 Mvar 1.07 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.7 Mvar 1.08 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.03 puIDAHO-NV 1.03 puKINPORT 186.6 Mvar 1.08 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 6 M W - 4 1 M v a r 1 7 4 2 M W - 9 7 M v a r 1769 MW -75 Mvar 1773 MW -77 Mvar 434 MW -33 Mvar 877 MW 12 Mvar 1555 MW -119 Mvar 1080 MW -78 Mvar 898 MW -98 Mvar 154 MW -40 Mvar 982 MW -150 Mvar 940 MW 321 Mvar 555 MW 133 Mvar 2 3 5 M W - 2 6 M v a r 198 MW -43 Mvar 428 MW -53 Mvar 741 MW -43 Mvar 202 MW 15 Mvar 194 MW 11 Mvar 496 MW -9 Mvar 1.05 puANTICLIN 422 MW 2 Mvar 422 MW 0 Mvar 5 MW -101 Mvar 3 MW -87 Mvar 314 MW -48 Mvar 428 MW -53 Mvar 181 MW 17 Mvar 288 MW 52 Mvar 635 MW -127 Mvar 175 MW -67 Mvar 40 MW -46 Mvar 28 MW -49 Mvar 701 MW 176 Mvar 424 MW 72 Mvar 415 MW -272 Mvar 1072 MW -119 Mvar 203 MW -37 Mvar 130 MW -25 Mvar 159 MW -23 Mvar 136 MW -19 Mvar 33 MW -0 Mvar 2 5 9 M W 1 0 M v a r 41 MW 21 Mvar 163 MW -52 Mvar 30 MW -53 Mvar 7 MW -28 Mvar 23 MW -25 Mvar 22 MW -28 Mvar 4 4 4 M W - 1 1 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 33 MW -0 Mvar 39 MW 15 Mvar 325 MW 34 Mvar 2 9 4 M W - 4 5 M v a r 64 MW -3 Mvar 378 MW -53 Mvar 293 MW -16 Mvar 293 MW -16 Mvar 302 MW -21 Mvar 304 MW -39 Mvar 191 MW -52 Mvar 247 MW -63 Mvar 1 3 9 M W 4 8 M v a r 1 3 9 M W 4 5 M v a r 1080 MW -113 Mvar 773 MW 107 Mvar 181 MW 10 Mvar 598 MW -67 Mvar 555 MW -9 Mvar 515 MW -45 Mvar 431 MW 22 Mvar 340 MW 9 Mvar 334 MW 9 Mvar 383 MW -9 Mvar 392 MW -10 Mvar 375 MW 26 Mvar 4 0 3 M W 9 4 M v a r 1176 MW -139 Mvar 1 5 0 7 M W 8 M v a r 1 4 7 1 M W 3 6 M v a r 1 3 1 7 M W - 8 M v a r 1319 MW -127 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -289 MW Lolo = -294 MW Walla Walla = -146 MW LaGrande = -130 MW Idaho-Sierra = 235 MW N of John Day = 7776 MW COI = 4794 MW PDCI = 3101 MW ID-MT = -252 MW W of McNary = 4373 MW W of Slatt = 4879 MW Alturas Project = 3 MW Path C = -1507 MW Montana Southeast = 545 MW TOT 2B1 = -4 MW TOT 2C = -0 MW 290 MW -68 Mvar 141 MW 36 Mvar 1081 MW 15 Mvar 1117 MW -49 Mvar 277 M W 93 M v a r 9 8 1 M W - 1 2 5 M v a r 1 4 0 7 M W 2 0 9 M v a r 1350 MW -317 Mvar MSTI = 1500 MW SWIP North = 1950 MW SWIP South = 1501 MW Page 56 of 776 4.9.1 Background & Need for Simultaneous Interaction Studies The Mountain States Transmission Intertie (MSTI) and the Southwest Intertie Project (SWIP) are proposed projects similarly situated in Phase 2 of the WECC path rating process. The MSTI project extends from Townsend substation, in western Montana, to Midpoint substation, in southern Idaho. The SWIP project is made up of a northern segment and a southern segment. SWIP North extends from Midpoint substation to Robinson substation, near Ely, Nevada. SWIP South, otherwise known as the One Nevada Line, extends from Robinson substation to Harry Allen substation in the Las Vegas area. SWIP South is scheduled to be energized in late 2012, and has been modeled in all base cases. The report assumes that the Idaho terminus of the SWIP North will change to Cedar Hill with the addition of Gateway West and an additional 500 kV line will be constructed from Cedar Hill to Midpoint. Due to the Hemingway-Boardman, MSTI and SWIP projects being similarly situated in the rating process, and the large impact the MSTI and SWIP projects will have on the Idaho Power transmission system, a simultaneous interaction study between Idaho-Northwest and MSTI/SWIP is prudent and necessary. The MSTI and SWIP North project are not included in any of the other base cases. Absent other projects, such as the Overland DC line, MSTI and SWIP work best when studied together. 4.9.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case names for this study are: 16hs2a_2250idnw_ms. Step-by-step development of the 16hs2a_2250idnw_ms case: Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. Step 2: Add the MSTI and SWIP projects and stress each line. MSTI was stressed to its 1,500 MW north-to-south rating, SWIP North was stressed to 1,950 MW north-to-south, and SWIP South was stressed to 1500 MW north-to-south. MSTI & SWIP path flows were modified by increasing generation in Montana and reducing generation in Nevada and Arizona and using the phase shifters at Townsend 500 kV and Robinson 345 kV. Page 57 of 776 Step 3: Re-stress the Idaho-Northwest path to 2250 MW in the west-to-east direction. The Idaho-Northwest path was stressed to 2250 MW in the west-to-east direction by reducing southern generation and replacing the generation with a schedule from the Northwest. 4.9.3 Post Transient Results Post-transient contingency results for the MSTI & SWIP (SWIP South – 1500 MW) case can be found in Appendix D. The case name is 16hs2a_2250idnw_ms. Details for the notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF PGE Grassland-Cedar Sp 500 kV&Grassland-Hem 500 kV This breaker failure is the most limiting contingency in the study of Idaho-Northwest v MSTI & SWIP. This contingency results in overloading the Townsend 500 kV phase shifter to 112% of its assumed nominal rating (1550 MVA) and 97% of the assumed emergency rating (1782.5 MVA). Refer to the table below for more information about the overloads caused by this contingency. Table 37: Post-transient results – BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kV Element Nominal % Loading Emergency % Loading Townsend Phase Shifter 500 kV 111.8% (1790 Amp Rating) 97.2% (2058 Amp Rating) Brownlee-Hells Canyon 230 kV 106% (1237 Amp Rating) 94% (1396 Amp Rating) Oxbow – Lolo 230 kV 101% (920 Amp SOL) 89% (1047 Amp Rating) If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Severe Post-Transient Contingency #2 – N-1: Hemingway-Grassland 500 kV + PTSN Shunt This is the second most limiting contingency in the study of Idaho-Northwest v MSTI & SWIP. This contingency results in overloading the Townsend 500 kV phase shifter to 111% of its assumed nominal rating (1550 MVA) and 97% of its assumed emergency rating (1782.5 MVA). Refer to the table below for more information about the overloads caused by this contingency. Table 38: Post-transient results – N-1: Hemingway-Grassland 500 kV + PTSN Shunt Page 58 of 776 If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Notable Contingency #1 – N-1: Midpoint-Townsend 500 kV (MSTI) This contingency results in overloading the Oxbow-Lolo 230 kV line to 107.8% of its SOL rating (94.8% of emergency). Refer to the table below for more information about the overloads caused by this contingency. Table 39: Post-transient results – N-1: Midpoint-Townsend 500 kV (MSTI) + PTSN Shunt Element Nominal % Loading Emergency % Loading Oxbow – Lolo 230 kV 107.8% (920 Amp SOL) 94.8% (1047 Amp Rating) Brownlee-Hells Canyon 230 kV 102% (1237 Amp Rating) 90% (1396 Amp Rating) Midpoint-Hemingway 500 kV 109% (1183 Amp Rating) 80% (1877 Amp Rating) Switching a new 31.7 MVAr shunt capacitor at Peterson 230 kV is required to avoid post-transient voltage deviation issues. Notable Contingency #2 – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This contingency results in overloading the Townsend phase shifting transformer to 111.3% of its assumed nominal rating (96.8% of assumed emergency). Refer to the table below for more information about the overloads caused by this contingency. Table 40: Post-transient results – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Townsend Phase Shifter 500 kV 111.3% (1528 Amp Rating) 96.8% (1782 Amp Rating) Brownlee-Hells Canyon 230 kV 105% (1237 Amp Rating) 90% (1396 Amp Rating) If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 2250 MW west-to-east rating simultaneous with MSTI at 1500 MW north- to-south, and SWIP at 1950 MW north-to-south. 4.9.4 Voltage Stability The Idaho-Northwest v MSTI & SWIP study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). Page 59 of 776 PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v MSTI & SWIP study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW west-to-east rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating, simultaneous with the MSTI and SWIP lines at their proposed ratings. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_ms case can be found in Appendix D. Busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, McNary 500 kV, Mill Creek 230 kV and Yellowtail 230 kV. The tables below highlight a sample of the reactive margins at Hemingway, Robinson, and Townsend. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 41: Hemingway 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: Double Palo Verde 0.86 -1436 Worst VQ contingency BF IPC HEM-Grassland 500 kV & HEM 500/230 XFMR 0.77 -1990 Worst VQ related to Idaho Power BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.81 -1940 Worst VQ related to Idaho-Northwest Table 42: Townsend 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: Double Palo Verde 0.96 -390 Worst VQ contingency N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.93 -431 Worst VQ related to Montana BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.94 -551 Worst VQ related to Idaho-Northwest Table 43: Robinson 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: ROBINSON-HARRY ALLEN 500 KV 0.70 -1283 Worst VQ contingency BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR 0.70 -1874 Worst VQ related to Idaho Power BUS: SUMMER LAKE 500 KV 0.70 -2215 Worst VQ related to Idaho-Northwest Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Page 60 of 776 Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the MSTI or SWIP projects at the flow levels studied. 4.9.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_ms case can be found in Appendix D. The 16hs2a_2250idnw_ms base case was the basis for all transient stability study results for this Hemingway-Boardman v MSTI & SWIP Simultaneous Interaction Study. All contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. FACRI was modeled in the base case dynamic data base file and triggered for loss of the Hemingway- Boardman 500 kV line. 4.9.6 Remedial Action Schemes For the 16hs2a_2250idnw_ms case, each contingency, and the associated switching (RAS), is documented in Appendix D. Details for the notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF PGE Grassland-Cedar Sp 500 kV&Grassland-Hem 500 kV After the loss of these two lines, switched VAr devices in the area would switch in due to depressed voltages at the busses that the devices would be controlling. The contingency included capacitor switching of 31.7 MVAr at Peterson 230 kV and 22.5 MVAr at Quartz 138 kV. In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #2 – N-1: Hemingway-Grassland 500 kV After the loss of this line, switched VAr devices modeled at Peterson 230 kV, and Dillon 69 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 44: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 61 of 776 Notable Contingency #1 – N-1: Midpoint-Townsend 500 kV (MSTI) After the loss of this line, switched VAr devices in Montana, Wyoming and Idaho would switch in due to depressed voltages at the busses that the devices would be controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 45: Shunt Capacitor Switching in N-1: Midpoint-Townsend 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Notable Contingency #2 – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This contingency opens the Hemingway-Grassland 500 kV line and the Hemingway 500/230 kV transformer. This contingency does not have any associated RAS. Page 62 of 776 4.10 Sensitivity Study: Hemingway-Boardman Stand Alone Figure 14: Idaho-Northwest (Path 14) 2250 MW, West to East, Stand Alone Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 223.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 5 7 3 M W - 1 3 7 M v a r 1 4 6 3 M W - 1 7 1 M v a r 1 7 0 1 M W - 2 1 8 M v a r 1585 MW -161 Mvar 308 MW 53 Mvar 269 MW 51 Mvar 302 MW 63 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD444.7 Mvar 1.08 puBUCKLEY 1.03 puLAGRANDE 55.5 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.3 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.0 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 5 9 M W - 5 2 M v a r 1 6 8 3 M W - 1 1 5 M v a r 1754 MW -86 Mvar 1759 MW -88 Mvar 412 MW -24 Mvar 1259 MW 84 Mvar 0 MW 0 Mvar 4 9 9 M W 8 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1238 MW 87 Mvar 196 MW 8 Mvar 188 MW 3 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 604 MW 33 Mvar 603 MW 31 Mvar 65 MW 73 Mvar 56 MW 61 Mvar 242 MW -43 Mvar 0 MW 0 Mvar 34 MW 51 Mvar 382 MW 25 Mvar 742 MW -216 Mvar 86 MW -60 Mvar 37 MW -51 Mvar 25 MW -55 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 367 MW -231 Mvar 1110 MW -136 Mvar 224 MW -35 Mvar 150 MW -29 Mvar 179 MW -30 Mvar 155 MW -22 Mvar 53 MW 2 Mvar 2 8 2 M W 1 8 M v a r 51 MW 28 Mvar 201 MW -56 Mvar 22 MW -63 Mvar 3 MW -35 Mvar 19 MW -32 Mvar 17 MW -36 Mvar 4 6 0 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 94.8 Mvar 0.0 Mvar 1.01 puONTARIO 53 MW 2 Mvar 33 MW 11 Mvar 339 MW 48 Mvar 3 0 4 M W - 3 5 M v a r 82 MW -12 Mvar 381 MW -52 Mvar 308 MW -15 Mvar 308 MW -15 Mvar 317 MW -20 Mvar 320 MW -41 Mvar 201 MW -53 Mvar 260 MW -65 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1119 MW -115 Mvar 918 MW -11 Mvar 96 MW 45 Mvar 530 MW -66 Mvar 558 MW -10 Mvar 519 MW -45 Mvar 462 MW 19 Mvar 434 MW 1 Mvar 427 MW 1 Mvar 491 MW -16 Mvar 503 MW -17 Mvar 775 MW -89 Mvar 4 0 1 M W 1 2 5 M v a r 1078 MW -142 Mvar 1 4 6 8 M W 5 M v a r 1 4 3 7 M W 3 2 M v a r 1 2 7 5 M W - 9 M v a r 1277 MW -121 Mvar ID-NW = -2251 MW Grassland = -1325 MW Summer Lake = -302 MW Lolo = -304 MWWalla Walla = -182 MW LaGrande = -150 MW Midpoint West = -1417 MWBorah West = 11 MW Idaho-Sierra = 499 MWN of John Day = 7800 MW COI = 4801 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 1962 MWW of Slatt = 3883 MW Alturas Project = 3 MW Path C = -1249 MW Montana Southeast = 600 MW TOT 2B1 = 85 MW TOT 2C = 250 MW 303 MW -74 Mvar 317 MW 40 Mvar 973 MW 1 Mvar 1129 MW 11 Mvar 0 M W 0 M v a r 9 8 5 M W - 1 2 0 M v a r 1 3 2 5 M W 1 4 2 M v a r 1275 MW -251 Mvar 790 MW -108 Mvar1260.05 MW-159.53 Mvar 747.71 MW-89.47 Mvar Page 63 of 776 4.10.1 Background & Need for Simultaneous Interaction Studies The Hemingway-Boardman 500 kV transmission project may be constructed and put into service prior to the addition of many of the other projects listed in the Plan of Service (Section 2.4). This sensitivity study will prove that the Idaho-Northwest is capable of 2250 MW in the west-to-east direction without (1) Stage One of Gateway West, (2) the Cascade Crossing Transmission Project, and (3) Longhorn substation & associated wind. Projects listed in Section 2.4, other than the three above, are modeled in the base case due to their certainty; both from a timing prospective and a project complete ability prospective (most have completed permitting and are under construction). In this case, Idaho-Northwest is studied at its 2250 MW west-to-east rating simultaneous with COI (4800 MW north-to-south), Idaho-Sierra (500 MW north-to-south), Montana-Idaho (337 MW north-to-south), Montana Southeast (600 MW north-to-south), North of John Day (7800 MW north-to-south) and PDCI (3100 MW north-to-south). 4.10.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is: 16hs2a_2250idnw_solo. Step-by-step development of the 16hs2a_2250idnw_solo base case: Step 1: Begin with the 16hs2a_2250idnw_N case Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. Step 2: Remove elements from the base case to create a “Hemingway-Boardman Stand Alone” case Remove the following elements from the 16hs2a_2250idnw_N case: (1) Stage One of Gateway West, (2) Cascade Crossing, and (3) the Longhorn substation & associated wind projects. Step 3: Re-stress the Idaho-Northwest path to 2250 MW. After removing the elements in Step 2, flow goes up on Idaho-Northwest, west-to-east. In order to reduce Idaho-Northwest flow, Northwest generation was reduced and Idaho area generation was increased. Page 64 of 776 Step 4: Re-stress the Simultaneous Interaction Study Paths. Re-stress the following paths: (1) COI to 4800 MW north-to-south, (2) Idaho-Sierra to 500 MW north-to-south, (3) Montana-Idaho to 337 MW north-to-south, (4) Montana Southeast to 600 MW north-to-south, (5) North of John Day to 7800 MW north-to-south and (6) PDCI to 3100 MW north-to-south. 4.10.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_solo case can be found in Appendix E. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Midpoint-Hem & Hem 500/230 kV Xfmr (non-credible) This contingency is unsolved in the base case. The Hemingway 500 kV bus will be constructed so that the Midpoint-Hemingway 500 kV line and the Hemingway 500/230 kV transformer do not share a common breaker, otherwise, the rating of the Idaho-Northwest path will have to be reduced. The Hemingway bus will be set up as depicted in the figure below (note the slightly grayed out breaker) if the Hemingway-Boardman 500 kV line is completed prior to the addition of the Populus-Cedar Hill-Hemingway 500 kV line. Figure 15: Hemingway 500 kV bus after the Hemingway-Boardman 500 kV line Severe Post-Transient Contingency #2 – BF IPC Hemingway-Grassland & Hem 500/230 kV Xfmr This is the limiting contingency for the Idaho-Northwest path in the west-to-east direction in this sensitivity case. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 113% of its nominal rating (99.7% of emergency). Since the overload is less than the Brownlee-Hells Canyon 230 kV lines emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Boardman Midpoint Summer Lake Page 65 of 776 Table 46: Post-transient results – BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Severe Post-Transient Contingency #3 – N-1: Midpoint-Hemingway 500 kV This contingency results in only minor nominal rating overloads on the Brownlee-Hells Canyon 230 kV line, and the Mill Creek-Peterson 230 kV line. The main concern with this contingency is severe post- transient voltage deviations across the Montana-Idaho (Path 18) transmission path at Peterson, an Idaho Power bus, and Amps, a PacifiCorp bus. For this N-1, the Peterson 230 kV bus voltage falls to 0.86 pu, a voltage drop of 9.7% and the Amps 230 kV bus voltage falls to ~0.88 pu, a voltage drop of 8.4%. Peterson and Amps 230 kV busses experience post-transient voltage deviations of ~6% following the loss of the Hemingway-Summer Lake 500 kV line today. The table below highlights the performance of the voltage at Peterson 230 kV and Amps 230 kV following the loss of the Midpoint-Hemingway 500 kV line for varying levels of shunt capacitor switching. Table 47: Post-transient voltage deviation results for Peterson & Amps 230 kV busses Post-Transient Shunt Switching MVAr Change Voltage Deviation HMWY Dillon Ore Basin PTSN Borah Mill Creek HMWY Dillon Ore Basin PTSN Borah Mill Creek Peterson 230 Amps 230 X X X 200 12 20 0 0 0 9.7% 8.4% X X X X 200 12 20 31.7 0 0 6.1% 6.2% X X X X X 200 12 20 31.7 175 0 5.8% 5.6% X X X X X 200 12 20 31.7 0 37.5 5.4% 5.8% X X X X X X 200 12 20 31.7 175 37.5 5.3% 5.3% In all cases, shunt capacitors are inserted post-contingency at Hemingway 500 kV (based on a capacitor insertion scheme at Hemingway), Dillon 69 kV (based on depressed voltages post-contingency at Dillon), and Ore Basin 34.5 kV (based on depressed post-contingency voltages at Ore Basin) totaling 200 MVAr, 12 MVAr, and 20 MVAr, respectively. Inserting the new Peterson 31.7 MVAr capacitor, detailed in the Plan of Service in Section 2.4, results in significantly improved performance approximately matching the performance of the system today. This report assumes that the new Peterson 230 kV shunt capacitor Page 66 of 776 will be sufficient to avoid a simultaneous interaction between the Idaho-Northwest path and the Montana-Idaho path. This contingency is modeled as N-1: Midpoint-Hemingway 500 kV + PTSN Shunt. If Idaho Power or PacifiCorp require superior performance at Peterson or Amps, shunt capacitors at Borah and/or Mill Creek could be inserted. Idaho Power has an existing remedial action scheme connecting Midpoint and Borah substations that could be utilized to switch the Borah shunt capacitor. At Mill Creek, Northwestern has two shunt capacitors (18.8 MVAr and 18.7 MVAr) connected to the tertiary of their respective 230/161 kV transformers that could potentially be switched based on 230 kV bus voltage levels at Mill Creek. Severe Post-Transient Contingency #4 – N-1: Hemingway-Grassland 500 kV + PTSN Shunt This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 109% of its nominal rating (97% of emergency). Since the overload is less than the Brownlee-Hells Canyon 230 kV lines emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 48: Post-transient results – N-1: Hemingway-Grassland 500 kV + PTSN Shunt In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption (the Idaho-Northwest path could be operating at 2250 MW west-to-east, with low flow on the COI). The table below shows the overloads following the loss of Hemingway-Boardman 500 kV with FACRI insertion of the Fort Rock series capacitors. Table 49: Post-transient results – N-1: Hemingway-Grassland 500 kV + FACRI The new Peterson 230 kV shunt capacitor does not switch assuming FACRI operation. The results show a large reduction to the overloads on the Idaho-Northwest 230 kV lines, however, the Grizzly-Summer Lake line Fort Rock series capacitor overloads to 122% of its nominal rating (92% of emergency). Overall, FACRI improves the performance of this contingency. Page 67 of 776 Severe Post-Transient Contingency #5 – N-2: Bridger-Populus #1 & #2 345 kV This contingency results in overloading the Midpoint 500/345 kV transformer to 109% of its nominal 1500 MVA rating (99% of its emergency 1650 MVA rating). Since the overload is less than the Midpoint 500/345 kV transformer’s emergency rating, this contingency results in acceptable performance. Post- transient voltage deviations are within WECC System Performance Criteria allowable 10% for N-2 contingencies. Severe Post-Transient Contingency #6 – N-1: Round Mtn-Table Mtn #1 500 kV This contingency results in overloading the Round Mtn-Table Mtn #2 500 kV line to 148% of its nominal rating (99% of emergency). Since the overload is less than the emergency rating of the 500 kV line, this contingency results in acceptable performance. The table below compares the system today (Idaho-Northwest stressed to 1200 MW) to the system modeled in the base case (Idaho-Northwest stressed to 2250 MW). The base case includes the Hemingway-Boardman and Gateway West 500 kV lines, whereas the “system today” does not. Table 50: Post-transient results – N-1: Round Mtn-Table Mtn #2 500 kV As can be seen from the table above, the Hemingway-Boardman 500 kV line improves the results of this contingency. Conclusion Post transient analysis indicated that a Hemingway substation breaker failure resulting in the loss of the Midpoint-Hemingway 500 kV line and the Hemingway 500/230 kV transformer results in unacceptable system performance (contingency doesn’t solve). The Hemingway 500 kV bus will be constructed so that the Midpoint-Hemingway 500 kV line and the Hemingway 500/230 kV transformer do not share a common breaker. The Hemingway bus will be configured as depicted in Figure 2 of Section 2.4 (note the slightly grayed out breaker) if the Hemingway-Boardman 500 kV line is completed prior to the addition of the Populus-Cedar Hill-Hemingway 500 kV line. With the Hemingway breaker failure addressed as part of the plan of service, all other post-transient results indicate that Idaho-Northwest path can achieve a 2250 MW west-to-east rating, absent other projects in the Plan of Service. Page 68 of 776 4.10.4 Voltage Stability The Hemingway-Boardman Stand Alone study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Hemingway-Boardman Stand Alone study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2362.5MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating with only the Hemingway-Boardman 500 kV line in service. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N_solo base case can be found in Appendix E. Busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV, and Yellowtail 230 kV. The tables below highlight a sample of the reactive margins at Hanford, Hemingway, John Day and Malin. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 51: Hanford 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: DOUBLE PALO VERDE 0.95 -1007 Worst VQ N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.95 -1495 2nd Worst VQ N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.95 -1502 3rd Worst VQ Table 52: Hemingway 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments BUS: SUMMER LAKE 500 KV 0.79 -1046 Worst VQ N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.86 -1069 2nd Worst VQ BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.79 -1076 3rd Worst VQ Table 53: John Day 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.99 -940 Worst VQ BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.99 -1074 2nd Worst VQ N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.99 -1084 3rd Worst VQ Page 69 of 776 Table 54: Malin 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.86 -1835 Worst VQ N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.93 -1922 2nd Worst VQ BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.88 -1928 3rd Worst VQ Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, voltage stability is not an issue for the Idaho-Northwest path at the flow levels studied. 4.10.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_solo case can be found in Appendix E. The 16hs2a_2250idnw_solo base case was the basis for all transient stability study results for this Hemingway-Boardman Stand Alone Sensitivity Study. All contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. FACRI was modeled in the base case dynamic data base file and triggered for loss of the Hemingway- Boardman 500 kV line. 4.10.6 Remedial Action Schemes For the 16hs2a_2250idnw_solo base case, each contingency, and the associated switching (RAS), is documented in Appendix E. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Midpoint-Hem & Hem 500/230 kV Xfmr (non-credible) As documented in the Post-Transient section, this contingency is not credible. Severe Post-Transient Contingency #2 – BF IPC Hemingway-Grassland & Hem 500/230 kV Xfmr After the loss of this line and transformer, switched VAr devices modeled at Dillon 69 kV and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post- transient contingency run. Page 70 of 776 Table 55: Shunt Capacitor Switching in BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #3 – N-1: Midpoint-Hemingway 500 kV + PTSN Shunt After the loss of this line and transformer, switched VAr devices modeled at Dillon 69 kV, re Basin 34.5 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 56: Shunt Capacitor Switching in N-1: Midpoint-Hemingway 500 kV + PTSN Shunt In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #4 – N-1: Hemingway-Grassland 500 kV + PTSN Shunt After the loss of this line and transformer, switched VAr devices modeled at Dillon 69 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post- transient contingency run. Table 57: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV + PTSN Shunt In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 71 of 776 Severe Post-Transient Contingency #5 – N-2: Bridger-Populus #1 & #2 345 kV This contingency is monitored by the WECC RASRS accepted Bridger West Remedial Action Scheme (RAS). After this double line loss, given the flow levels modeled in the case, the Bridger RAS will trip two Bridger units totaling ~1100 MW (in this case). The Bridger RAS will also insert the Borah 345 kV 175 MVAr shunt capacitor. Flow reduction on the Bridger West path, following the unit trip, will result in bypassing of portions of the series capacitors on the Bridger West 345 kV lines. Finally, Dillon 69 kV and Peterson 230 kV shunt capacitors will switch in due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 58: Shunt Capacitor Switching in N-2: Bridger-Populus #1 & #2 345 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 72 of 776 4.11 Sensitivity Study: Walla Walla Area, 100% Wind Figure 16: Idaho-Northwest (Path 14) 2250 MW, West to East, Walla Walla Area, 100% Wind, Base Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 223.8 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 5 M W - 1 3 1 M v a r 1 4 9 3 M W - 1 6 5 M v a r 1 7 0 8 M W - 2 1 4 M v a r 1590 MW -159 Mvar 288 MW 65 Mvar 252 MW 61 Mvar 249 MW 70 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD447.1 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.00 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.4 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.98 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 8 0 M W - 4 2 M v a r 1 7 3 5 M W - 1 0 0 M v a r 1763 MW -79 Mvar 1767 MW -82 Mvar 443 MW -34 Mvar 886 MW 15 Mvar 1586 MW -122 Mvar 1110 MW -82 Mvar 946 MW -105 Mvar 100 MW -29 Mvar 1098 MW -178 Mvar 1268 MW 144 Mvar 173 MW 178 Mvar 5 0 1 M W 2 M v a r 173 MW 108 Mvar 402 MW -21 Mvar 844 MW 175 Mvar 159 MW -6 Mvar 150 MW -11 Mvar 751 MW 68 Mvar 1.05 puANTICLIN 376 MW 4 Mvar 376 MW 2 Mvar 20 MW 118 Mvar 19 MW 100 Mvar 321 MW 37 Mvar 402 MW -21 Mvar 179 MW -1 Mvar 255 MW 74 Mvar 588 MW -85 Mvar 155 MW -36 Mvar 2 MW -60 Mvar 12 MW 65 Mvar 582 MW 161 Mvar 545 MW 37 Mvar 659 MW -256 Mvar 1108 MW -132 Mvar 204 MW -37 Mvar 131 MW -25 Mvar 160 MW -24 Mvar 181 MW -41 Mvar 24 MW -28 Mvar 2 6 0 M W 1 0 M v a r 12 MW 45 Mvar 219 MW -69 Mvar 165 MW -97 Mvar 144 MW -70 Mvar 160 MW -64 Mvar 161 MW -70 Mvar 4 6 8 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 94.8 Mvar 0.0 Mvar 1.01 puONTARIO 24 MW -28 Mvar 79 MW 2 Mvar 280 MW 62 Mvar 3 1 4 M W - 4 9 M v a r 62 MW -3 Mvar 389 MW -57 Mvar 305 MW -14 Mvar 305 MW -14 Mvar 315 MW -20 Mvar 318 MW -40 Mvar 199 MW -53 Mvar 257 MW -65 Mvar 1 9 M W 4 6 M v a r 1 9 M W 4 5 M v a r 1117 MW -113 Mvar 825 MW 85 Mvar 147 MW 18 Mvar 568 MW -67 Mvar 582 MW -11 Mvar 541 MW -46 Mvar 485 MW 16 Mvar 463 MW -2 Mvar 454 MW -2 Mvar 525 MW -17 Mvar 538 MW -19 Mvar 854 MW -113 Mvar 2 6 0 M W 1 2 0 M v a r 1152 MW -131 Mvar 1 5 0 1 M W 9 M v a r 1 4 6 6 M W 3 7 M v a r 1 3 3 4 M W 1 M v a r 1335 MW -119 Mvar ID-NW = -2250 MW Grassland = -1374 MW Summer Lake = -249 MW Lolo = -314 MW Walla Walla = -199 MW LaGrande = -131 MW Midpoint West = -1646 MW Borah West = -325 MW Idaho-Sierra = 501 MW N of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4543 MW W of Slatt = 4894 MW Alturas Project = 150 MW Path C = -1602 MW Montana Southeast = 599 MW TOT 2B1 = 70 MW TOT 2C = 195 MW 249 MW -75 Mvar 127 MW 47 Mvar 990 MW -6 Mvar 1099 MW 13 Mvar 37 M W 86 M v a r 9 8 8 M W - 1 2 4 M v a r 1 3 7 4 M W 1 7 7 M v a r 1320 MW -293 Mvar Page 73 of 776 4.11.1 Background & Need for Simultaneous Interaction Studies With the influx of wind in the Pacific-Northwest, the Hemingway to Boardman Phase II study review group requested that the impacts of the Hemingway to Boardman project be evaluated with heavy wind modeled in the Walla Walla area. 4.11.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_2250idnw_nww. Step-by-step development of the 16hs2a_2250idnw_N_nww case: Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. Step 2: Increase wind in the Walla Walla area (Southeast Washington). Incorporate 100% wind output for the wind generators listed in the table below. Previously, Walla Walla area wind output was at 50% in the 16hs2a_2250idnw_N base case. Table 59: Wind Modeled at 100% in Walla Walla Area, 100% Wind Case Page 74 of 776 Step 3: Re-stress the Idaho-Northwest path to 2250 MW in the west-to-east direction. With the wind generators noted in the table above at 100% output, TE Roach complex (Brownlee, Oxbow, and Hells Canyon hydroelectric dams) generation had to be curtailed by approximately 30 MW to avoid overloading the Oxbow-Lolo and Hells Canyon-Walla Walla lines. Idaho-Northwest flows were maintained at 2250 MW, west-to-east. No other paths were significantly altered. 4.11.3 Post Transient Results Post-transient contingency results for the Walla Walla Area, Wind 100% study can be found in Appendix F. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF PGE Grassland-Cedar Sp 500 kV&Grassland-Hem 500 kV The breaker failure is the most limiting contingency for the Walla Walla Area, 100% Wind sensitivity study. The contingency results in loading the Hells Canyon 230 kV line to 112.7% of its nominal rating (99.9% of the assumed emergency rating). Refer to the table below for more information about the overloads caused by this contingency. Table 60: Post-transient results – BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kV Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112.7% (1237 Amp Rating) 99.9% (1396 Amp Rating) Oxbow – Lolo 230 kV 112.9% (920 Amp SOL) 99.2% (1047 Amp Rating) Mill Creek – Peterson 230 kV 104.1% (800 Amp Rating) 70% (1200 Amp Rating) If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Severe Contingency #2: BF IPCO Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 112% of its nominal rating (99% of its emergency rating). Refer to the table below for more information about the overloads caused by this contingency. Table 61: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112% (1237 Amp Rating) 99.1% (1396 Amp Rating) Oxbow – Lolo 230 kV 112% (920 Amp SOL) 98.6% (1047 Amp Rating) Mill Creek – Peterson 230 kV 100.4%(800 Amp Rating) 67% (1200 Amp Rating) Page 75 of 776 Severe Contingency #3: BF IPCO Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 111% of its nominal rating (99% of its emergency rating). Refer to the table below for more information about the overloads caused by this contingency. Table 62: Post-transient results – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 111% (1237 Amp Rating) 98.6% (1396 Amp Rating) Oxbow – Lolo 230 kV 111% (920 Amp SOL) 97.6% (1047 Amp Rating) Mill Creek – Peterson 230 kV 103% (800 Amp Rating) 69% (1200 Amp Rating) As evidenced in the tables above, a breaker failure at Hemingway significantly stresses the Brownlee- Hells Canyon and Oxbow-Lolo 230 kV lines to near their emergency limits. Section 2.4 considers different Hemingway 500 kV substation configurations to avoid severe breaker failures; however, for this study, this breaker failure is considered to be credible. If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Notable Contingency #1: N-1: Hemingway-Grassland 500 kV The system performance of the Walla Walla Area, 100% Wind case for the N-1 loss of the Hemingway- Grassland 500 kV line is similar to the performance for the Idaho-Northwest, west-to-east, base case study (Section 4.1.3). This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 112% of its nominal rating (98% of emergency). Since the overload is less than the Brownlee-Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 63: Post-transient loading – N-1: Hemingway-Grassland 500 kV Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112% (1237 Amp Rating) 98% (1396 Amp Rating) Oxbow – Lolo 230 kV 111% (920 Amp SOL) 97% (1047 Amp Rating) Mill Creek – Peterson 230 kV 103% (800 Amp Rating) 69% (1200 Amp Rating) This contingency also results in post-transient voltage deviations greater than 5% at Amps and Peterson 230 kV busses. WECC System Performance Criteria does not allow post-transient voltage deviations of greater than 5% for N-1 contingencies. The plan of service for the Hemingway-Boardman 500 kV Transmission project, detailed in Section 2.4, includes a new 31.7 MVAr shunt capacitor connected to Page 76 of 776 the Peterson 230 kV bus to be switched post-contingency (the existing 31.7 MVAr shunt capacitor is in- service pre-contingency). The contingency labeled “N-1: Hemingway-Grassland 500 kV + PTSN Shunt” switches this new Peterson 230 kV shunt capacitor, post-contingency, in response to low voltage on the Peterson 230 kV bus. The additional shunt bank switching solves the post-transient voltage deviation issue. If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Conclusion The performance of the most severe contingencies for Walla Walla Area, 100% Wind study was similar to the performance of the same contingencies in the Base Case Study. No contingencies resulted in unacceptable performance. In summary, the post-transient results indicate that high wind generation in the Walla Walla area does not negatively impact the proposed Idaho-Northwest 2250 MW rating. 4.11.4 Voltage Stability The Walla Walla 100% wind sensitivity study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Walla Walla 100% wind case, all contingencies have a post-transient solution with Idaho- Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that real power margin exists to operate the Idaho-Northwest path at the proposed 2250 MW rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_nww case can be found in Appendix F. The busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, Mill Creek 230 kV and Yellowtail 230 kV. The tables below highlight a sample of the reactive margins at these busses. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Page 77 of 776 Table 64: 16hs2a_2250idnw_nww case reactive margin results (sample) Contingencies Voltage @ Qmin Margin (MVAr) Comments Br o w n l e e N-2: DOUBLE PALO VERDE 0.85 -563 Worst VQ contingency BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.89 -592 Worst VQ related to Idaho Power BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.90 -638 Worst VQ related to Idaho-Northwest Ha n f o r d N-2: DOUBLE PALO VERDE 0.96 -1815 Worst VQ contingency N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.94 -2023 2nd Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.93 -2889 Worst VQ related to Idaho-Northwest He m i n g w a y BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.81 -1693 Worst VQ contingency BUS: SUMMER LAKE 500 KV 0.77 -1697 2nd Worst VQ contingency BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.76 -1731 3rd Worst VQ contingency Jo h n D a y N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 kV + RAS 1.00 -1035 Worst VQ contingency N-2: PAUL-NAPAVINE & PAUL_ALLSTON #2 500 kV + RAS 1.00 -1069 2nd Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV+PTSN 0.98 -1270 Worst VQ related to Idaho-Northwest Ma l i n BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.88 -2025 Worst VQ contingency N-2: DOUBLE PALO VERDE 0.92 -2200 2nd Worst VQ contingency N-1: CAPTAIN JACK-OLINDA 500 KV 0.83 -2299 3rd Worst VQ contingency Ma r i o n N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.93 -1299 Worst VQ contingency N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.93 -1339 2nd Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.90 -1457 Worst VQ related to Idaho-Northwest Mi l l C r e e k N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.86 -283 Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.80 -431 2nd Worst VQ contingency N-2: DOUBLE PALO VERDE 0.80 -440 3rd Worst VQ contingency Ye l l o w t a i l N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.78 -221 Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.77 -239 2nd Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.77 -249 3rd Worst VQ contingency Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, voltage stability is not an issue for the Walla Walla Area, 100% Wind case. Page 78 of 776 4.11.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_nww case can be found in Appendix F. The 16hs2a_2250idnw_nww base case was the basis for all transient stability study results for this Hemingway-Boardman v West of Hatwai Simultaneous Interaction Study. All contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. FACRI was modeled in the base case dynamic data base file and triggered for loss of the Hemingway- Boardman 500 kV line. 4.11.6 Remedial Action Schemes For the 16hs2a_2250idnw_nww case, each contingency, and the associated switching (RAS), is documented in Appendix F. Details for the notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF PGE Grassland-Cedar Sp 500 kV&Grassland-Hem 500 kV After the loss of these two lines, switched VAr devices modeled at Hopkins Ridge Wind2 34.5 kV, Peterson 230 kV, and Quartz 138 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 65: Shunt Capacitor Switching in BF PGE Grassland-Cedar Sp 500 kV&Grassland-Hem 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency Severe Contingencies #2: BF IPCO Hemingway-Grassland 500 kV & Hem 500/230 Xfmr After the loss of this line and transformer, switched VAr devices modeled at Hopkins Ridge Wind2 34.5 kV would switch from 9 MVAr to 14.5 MVAr due to depressed voltage on the bus that the device is controlling. Severe Contingencies #3: BF IPCO Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr After the loss of this line and transformer, switched VAr devices modeled at Hopkins Ridge Wind2 34.5 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 Page 79 of 776 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 66: Shunt Capacitor Switching in BF IPCO Midpoint-Grassland 500 kV & Hem 500/230 Xfmr In reality, additional capacitors may switch that are not modeled as part of this contingency. Notable Contingency #1: N-1: Hemingway-Grassland 500 kV After the loss of this line and transformer, switched VAr devices modeled at Dillon 69 kV, Hopkins Ridge Wind2 34.5 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 67: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 80 of 776 4.12 Sensitivity Study: High West of McNary & West of Slatt Figure 17: Idaho-Northwest (Path 14) 2250 MW, West to East, High West of McNary & West of Slatt Base Case 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 227.0 Mvar 1.09 puPONDROSA 0.0 Mvar 1 6 3 7 M W - 1 6 1 M v a r 1 5 2 2 M W - 1 9 7 M v a r 1 7 2 3 M W - 2 5 1 M v a r 1599 MW -197 Mvar 257 MW 30 Mvar 224 MW 30 Mvar 209 MW 71 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 352.1 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD449.3 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.6 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.03 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 187.4 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 3 5 7 M W - 5 6 M v a r 1 9 2 7 M W - 6 1 M v a r 1765 MW -111 Mvar 1769 MW -114 Mvar 554 MW -38 Mvar 1023 MW 26 Mvar 1708 MW -169 Mvar 1173 MW -122 Mvar 1205 MW -185 Mvar 239 MW -88 Mvar 1215 MW -192 Mvar 1289 MW 68 Mvar 187 MW 184 Mvar 5 0 0 M W 9 M v a r 187 MW 114 Mvar 412 MW -19 Mvar 854 MW 97 Mvar 167 MW 11 Mvar 158 MW 7 Mvar 751 MW 55 Mvar 1.05 puANTICLIN 364 MW -10 Mvar 364 MW -12 Mvar 13 MW 105 Mvar 12 MW 90 Mvar 317 MW -24 Mvar 412 MW -19 Mvar 187 MW 21 Mvar 248 MW 66 Mvar 578 MW -85 Mvar 162 MW -58 Mvar 9 MW -48 Mvar 5 MW 52 Mvar 568 MW 140 Mvar 548 MW 26 Mvar 687 MW -227 Mvar 1360 MW -207 Mvar 216 MW -36 Mvar 143 MW -28 Mvar 171 MW -28 Mvar 151 MW -19 Mvar 48 MW 2 Mvar 2 7 3 M W 1 4 M v a r 70 MW 14 Mvar 167 MW -49 Mvar 16 MW -50 Mvar 7 MW 24 Mvar 9 MW -21 Mvar 8 MW -24 Mvar 4 6 3 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 95.1 Mvar 0.0 Mvar 1.01 puONTARIO 48 MW 2 Mvar 35 MW 26 Mvar 356 MW 50 Mvar 3 1 7 M W - 4 5 M v a r 71 MW -9 Mvar 391 MW -59 Mvar 308 MW -16 Mvar 308 MW -16 Mvar 317 MW -22 Mvar 320 MW -43 Mvar 200 MW -53 Mvar 258 MW -65 Mvar 1 0 M W 4 0 M v a r 1 0 M W 4 0 M v a r 1373 MW -88 Mvar 191 MW 205 Mvar 798 MW -73 Mvar 1298 MW -59 Mvar 911 MW -40 Mvar 847 MW -51 Mvar 666 MW -1 Mvar 423 MW -2 Mvar 416 MW -2 Mvar 581 MW -20 Mvar 595 MW -21 Mvar 254 MW 7 Mvar 5 1 2 M W 1 0 3 M v a r 1468 MW -121 Mvar 1 5 3 3 M W - 2 3 M v a r 1 4 9 4 M W 5 M v a r 1 3 8 3 M W - 2 6 M v a r 1385 MW -153 Mvar ID-NW = -2250 MW Grassland = -1449 MW Summer Lake = -209 MW Lolo = -317 MW Walla Walla = -150 MW LaGrande = -143 MW Midpoint West = -1674 MW Borah West = -354 MW Idaho-Sierra = 500 MW N of John Day = 8401 MW COI = 4649 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 5299 MW W of Slatt = 5798 MW Alturas Project = 150 MW Path C = -1599 MW Montana Southeast = 600 MW TOT 2B1 = 70 MW TOT 2C = 195 MW 210 MW -80 Mvar 122 MW 65 Mvar 1295 MW -22 Mvar 1242 MW -5 Mvar 21 M W 76 M v a r 1 0 6 8 M W - 9 6 M v a r 1 4 4 9 M W 2 0 8 M v a r 1389 MW -374 Mvar Page 81 of 776 4.12.1 Background & Need for Simultaneous Interaction Studies The Hemingway to Boardman Phase II study review group requested that the impacts of the Hemingway to Boardman project be evaluated with high flow on West of McNary and West of Slatt. West of McNary and West of Slatt are not WECC rated paths. The West of McNary path is made up of the following lines: (1) Longhorn-Slatt 500 kV, (2) McNary-John Day 500 kV, (3) Coyote-Grassland 500 kV, (4) McNary-Ross 345 kV, (5) Jones Canyon-Tumble Creek 230 kV and (6) Harvalum-Big Eddy 230 kV. The Coyote-Grassland 500 kV line was added to the path for this base case due to the addition of the Cascade Crossings project. The West of Slatt path is made up of the following lines: (1) Slatt-John Day 500 kV, (2) McNary-John Day 500 kV, (3) Slatt-Buckley 500 kV and (4) Grassland-Cedar Spring 500 kV. The Grassland-Cedar Spring 500 kV line was added to the path for this base case due to the addition of the Cascade Crossings project. 4.12.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_2250idnw_wom. Step-by-step development of the 16hs2a_2250idnw_N_wom base case: Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. Step 2: Stress the West of McNary and West of Slatt paths. Generation east of McNary and Slatt was increased to stress the West of McNary and West of Slatt paths to approximately 5,300 MW and 5,800 MW, respectively. The path flows were increased by modifying generation in the Pacific Northwest, mostly in Southeast Washington, Lower Columbia Basin and Boardman generation. The generation modification resulted a 600 MW increase in North of John Day flows (to 8,400 MW). Step 3: Re-stress Idaho-Northwest The Idaho-Northwest path was re-stressed to 2250 MW in the west-to-east direction by reducing PacifiCorp East (PACE) and Idaho Power generation and replacing the generation with a schedule from the Northwest. No other paths were significantly altered. Page 82 of 776 4.12.3 Post Transient Results Post-transient contingency results for high West of McNary and West of Slatt case can be found in Appendix G. The case name is 16hs2a_2250idnw_wom. Details for the severe/notable contingencies can be found below. Most Severe Contingency: BF PGE Grassland-Cedar Springs 500 kV&Grasslnd-Hemingway 500 kV+CAPS The breaker failure is the most limiting contingency for the High West of McNary/Slatt sensitivity study. This contingency results in loading the Oxbow-Lolo 230 kV line to 113.8% of its nominal rating (100.0% of emergency). Refer to the table below for more information about the overloads caused by this contingency. Table 68: Post-transient results – PGE Grassland-Cedar Springs 500 kV & Grassland-Hemingway 500 kV Element Nominal % Loading Emergency % Loading Oxbow – Lolo 230 kV 113.8% 100.0% Brownlee-Hells Canyon 230 kV 112.8% 99.9% Without shunt capacitor switching at Dillon 69 kV, Hemingway 500 kV, North Powder 34.5 kV, Quartz 138 kV, and Peterson 230 kV, the Oxbow-Lolo 230 kV line, and Brownlee-Hells Canyon 230 kV line would have been overloaded slightly above their emergency ratings. Although very close to going over the emergency ratings of these two lines, additional post-transient actions could be taken to quickly reduce the loading on the lines. These actions include: (1) reducing Hells Canyon generation, and (2) inserting a Copperfield 230 kV series reactor in the Oxbow-Lolo 230 kV line. If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Severe Contingency #2: BF IPCO Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr This contingency results in loading the Oxbow-Lolo 230 kV line to 113.7% of its nominal rating (99.9% of emergency). Refer to the table below for more information about the overloads caused by this contingency. Table 69: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Oxbow – Lolo 230 kV 113.7% (920 Amp SOL) 99.9% (1047 Amp Rating) Brownlee-Hells Canyon 230 kV 112.4% (1237 Amp Rating) 99.6% (1396 Amp Rating) Page 83 of 776 Severe Contingency #3: BF IPCO Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This contingency results in loading the Brownlee-Hells Canyon 230 kV line to 111% of its nominal rating (99% of emergency). Refer to the table below for more information about the overloads caused by this contingency. Table 70: Post-transient results – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 111% (1237 Amp Rating) 98.7% (1396 Amp Rating) Oxbow – Lolo 230 kV 112% (920 Amp SOL) 98.5% (1047 Amp Rating) Mill Creek – Peterson 230 kV 103% (800 Amp Rating) 69% (1200 Amp Rating) If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. The performance of these contingencies is very similar to the performance of the same contingencies in the base case. The fact that the performance is similar indicates that high West of McNary/Slatt flow does not impact the performance of the Idaho-Northwest transmission path. Severe Post-Transient Contingency #4 – N-1: Hemingway-Grassland 500 kV The system performance of this High West of McNary/Slatt base case for the N-1 loss of the Hemingway- Grassland 500 kV line is very similar to the performance for the Idaho-Northwest, west-to-east, base case study (Section 4.1.3). This contingency results in overloading the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines to approximately 99% of their emergency ratings. Since the overloads are less than each line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 71: Post-transient loading – N-1: Hemingway-Grassland 500 kV Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112% (1237 Amp Rating) 99% (1396 Amp Rating) Oxbow – Lolo 230 kV 113% (920 Amp SOL) 99% (1047 Amp Rating) Mill Creek – Peterson 230 kV 103% (800 Amp Rating) 69% (1200 Amp Rating) This contingency also results in post-transient voltage deviations greater than 5% at Amps and Peterson 230 kV busses. WECC System Performance Criteria does not allow post-transient voltage deviations of greater than 5% for N-1 contingencies. The plan of service for the Hemingway-Boardman 500 kV Transmission project, detailed in Section 2.4, includes a new 31.7 MVAr shunt capacitor connected to the Peterson 230 kV bus to be switched post-contingency (the existing 31.7 MVAr shunt capacitor is in- Page 84 of 776 service pre-contingency). The contingency labeled “N-1: Hemingway-Grassland 500 kV + PTSN Shunt” switches this new Peterson 230 kV shunt capacitor, post-contingency, in response to low voltage on the Peterson 230 kV bus and solves the post-transient voltage deviation issue. If COI transfers are heavy in the north-to-south direction, as modeled in this base case, FACRI will trigger the insertion of the Fort Rock series capacitors, significantly improving the Idaho-Northwest path performance for this contingency. Inserting the Fort Rock series capacitors in the Grizzly-Captain Jack, Grizzly-Malin & Grizzly-Summer Lake 500 kV lines is not modeled in this post-transient contingency analysis as a conservative study assumption. Conclusion The performance of the most severe contingencies for the High West of McNary/Slatt study was similar to the performance of the same contingencies in the Base Case Study. No contingencies resulted in unacceptable performance. In summary, the post-transient results indicate that high flow on West of McNary and West of Slatt does not negatively impact the proposed Idaho-Northwest 2250 MW west-to- east rating. 4.12.4 Voltage Stability The High West of McNary and West of Slatt sensitivity study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest High West of McNary & West of Slatt sensitivity study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 2363 MW, 105% of the proposed 2250 MW rating. This PV Analysis verifies that real power margin exists to operate the Idaho-Northwest path at its proposed 2250 MW rating, simultaneous with the high West of McNary/Slatt flows. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16hs2a_2250idnw_N_wom case can be found in Appendix G. The busses studied utilizing VQ Analysis are: Brownlee 230 kV, Hanford 500 kV, Hemingway 500 kV, John Day 500 kV, Malin 500 kV, Marion 500 kV, McNary 500 kV, Mill Creek 230 kV and Yellowtail 230 kV. The tables below highlight a sample of the reactive margins at these busses. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Page 85 of 776 Table 72: 16hs2a_2250idnw_N_wom case reactive margin results (sample) Contingencies Voltage @ Qmin Margin (MVAr) Comments Br o w n l e e BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.89 --615 Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.88 -664 Worst VQ related to Idaho-Northwest N-2: DOUBLE PALO VERDE 0.84 -666 Worst VQ external to Idaho Power Ha n f o r d BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.93 -3412 Worst VQ contingency N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.88 -3418 2nd Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.89 -4096 Worst VQ related to Idaho-Northwest He m i n g w a y BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.81 -1826 Worst VQ contingency N-1: ALLSTON-KEELER 500 KV + RAS 0.74 -1848 2nd Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500 KV & GRASSLAND-HEM 500 kV 0.70 -1826 Worst VQ related to Idaho Power Jo h n D a y N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.98 -1395 Worst VQ contingency N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.98 -1733 2nd Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.97 -1917 Worst VQ related to Idaho-Northwest Ma l i n BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.86 -2258 Worst VQ contingency N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.79 -2501 2nd Worst VQ contingency N-1: ALVERY-DIXONVILLE 500 KV 0.87 -2528 3rd Worst VQ contingency Ma r i o n N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.79 -1416 Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.89 -1585 Worst VQ related to Idaho-Northwest BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.83 -2771 Worst VQ related to Idaho Power Mc N a r y N-2: GRASSLAND-COYOTE 500KV & SLATT-LONGHORN 500KV 0.91 -1451 Worst VQ contingency BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.86 -2101 2nd Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.92 -2422 Worst VQ related to Idaho-Northwest Mi l l C r ee k N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.86 -300 Worst VQ contingency BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.80 -433 2nd Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.80 -452 3rd Worst VQ contingency Ye l l o w t a i l BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.75 -228 Worst VQ contingency N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.77 -237 2nd Worst VQ contingency BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.78 -238 3rd Worst VQ contingency Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, voltage stability is not an issue for the High West of McNary & West of Slatt base case. Page 86 of 776 4.12.5 Transient Stability Transient stability contingency results for the 16hs2a_2250idnw_wom case can be found in Appendix G. The 16hs2a_2250idnw_wom base case was the basis for all transient stability study results for this High West of McNary/Slatt Sensitivity Study. All contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. FACRI was modeled in the base case dynamic data base file and triggered for loss of the Hemingway- Boardman 500 kV line. 4.12.6 Remedial Action Schemes For the 16hs2a_2250idnw_N_wom case, each contingency, and the associated switching (RAS), is documented in Appendix G. Details for the notable contingencies can be found below. Most Severe Contingency: BF PGE Grassland-Cedar Springs 500 kV & Grassland-Hemingway 500 kV After the loss of these two lines, switched VAr devices modeled at Dillon 69 kV, North Powder 34.5 kV, Peterson 230 kV, and Quartz 138 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 73: Shunt Capacitor Switching in BF PGE Grassland-Cedar Sp 500 kV&Grassland-Hem 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency Severe Contingency #2: BF IPCO Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr This contingency does not have any associated RAS. Severe Contingency #3: BF IPCO Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This contingency does not have any associated RAS. Severe Post-Transient Contingency #4 – N-1: Hemingway-Grassland 500 kV After the loss of this line, switched VAr devices modeled at Dillon 69 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. On the Page 87 of 776 Hemingway 500 kV bus, a capacitor insertion scheme will switch a 200 MVAr shunt capacitor in service. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 74: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 88 of 776 4.13 Sensitivity Study: Longhorn Terminus Figure 18: Idaho-Northwest (Path 14) 2250 MW, West to East, Longhorn Sensitivity Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 225.1 Mvar 1.08 puPONDROSA 0.0 Mvar 1 5 8 7 M W - 1 3 7 M v a r 1 4 8 0 M W - 1 7 1 M v a r 1 6 8 4 M W - 2 2 1 M v a r 1568 MW -164 Mvar 296 MW 58 Mvar 259 MW 55 Mvar 228 MW 69 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.01 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.7 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.9 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 7 9 M W - 4 9 M v a r 1 7 1 9 M W - 1 0 5 M v a r 1733 MW -96 Mvar 1737 MW -98 Mvar 428 MW -26 Mvar 909 MW 20 Mvar 610 MW -100 Mvar 134 MW -57 Mvar 519 MW -95 Mvar 279 MW -4 Mvar 1139 MW -186 Mvar 1295 MW 57 Mvar 179 MW 186 Mvar 4 9 9 M W 8 M v a r 179 MW 116 Mvar 399 MW -16 Mvar 874 MW 83 Mvar 156 MW 15 Mvar 147 MW 11 Mvar 733 MW 76 Mvar 1.05 puANTICLIN 533 MW 21 Mvar 533 MW 19 Mvar 17 MW 81 Mvar 15 MW 69 Mvar 276 MW -56 Mvar 399 MW -16 Mvar 111 MW 37 Mvar 337 MW 36 Mvar 719 MW -195 Mvar 139 MW -62 Mvar 1 MW 41 Mvar 16 MW 45 Mvar 559 MW 156 Mvar 586 MW 25 Mvar 468 MW -268 Mvar 957 MW -98 Mvar 189 MW -10 Mvar 117 MW -51 Mvar 146 MW -51 Mvar 148 MW -22 Mvar 46 MW -0 Mvar 2 4 5 M W 3 4 M v a r 18 MW 25 Mvar 155 MW -52 Mvar 41 MW -55 Mvar 19 MW -30 Mvar 35 MW -27 Mvar 34 MW -30 Mvar 4 4 7 M W - 1 0 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 46 MW -0 Mvar 36 MW 8 Mvar 335 MW 40 Mvar 3 0 3 M W - 4 6 M v a r 54 MW -26 Mvar 371 MW -49 Mvar 287 MW -16 Mvar 287 MW -16 Mvar 296 MW -21 Mvar 298 MW -38 Mvar 195 MW -52 Mvar 252 MW -64 Mvar 1 4 M W - 4 6 M v a r 1 4 M W - 4 6 M v a r 964 MW -127 Mvar 895 MW 66 Mvar 50 MW 27 Mvar 449 MW -64 Mvar 547 MW -9 Mvar 508 MW -45 Mvar 455 MW 19 Mvar 433 MW 1 Mvar 426 MW 1 Mvar 487 MW -16 Mvar 498 MW -17 Mvar 785 MW -117 Mvar 3 9 1 M W 1 1 9 M v a r 1176 MW -128 Mvar 1 4 8 8 M W 4 M v a r 1 4 5 4 M W 3 2 M v a r 1 3 3 3 M W 2 M v a r 1335 MW -118 Mvar ID-NW = -2249 MW Longhorn = -1477 MW Summer Lake = -228 MW Lolo = -303 MW Walla Walla = -138 MW LaGrande = -117 MW Midpoint West = -1630 MW Borah West = -312 MW Idaho-Sierra = 499 MW N of John Day = 7799 MW COI = 4801 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 2908 MW W of Slatt = 4773 MW Alturas Project = 8 MW Path C = -2001 MW Montana Southeast = 600 MW TOT 2B1 = 5 MW TOT 2C = 138 MW 228 MW -79 Mvar 171 MW 49 Mvar 1069 MW -25 Mvar 1217 MW 2 Mvar 27 M W -87 M v a r 9 6 9 M W - 1 2 9 M v a r 1418 MW -254 Mvar GRASSLND 1 4 1 8 M W - 3 8 3 M v a r Page 89 of 776 4.13.1 Background & Need for Sensitivity Study The Boardman area terminus of the Hemingway to Boardman project has not been finalized. Grassland Substation and Longhorn Substation are the two terminus alternatives presently being evaluated. All previous studies assumed a Grassland terminus. This sensitivity study was conducted to determine if a Longhorn termination would adversely impact the proposed 2250 MW, west-to-east rating. 4.13.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_2250idnw_lh. Step-by-step development of the 16hs2a_2250idnw_N_lh base case: Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. Step 2: Create a Hemingway-Longhorn 500 kV line and remove the Hemingway-Grassland 500 kV line. The line impedance was modified based on the proposed Longhorn substation location. The series capacitor impedance values in the Hemingway-Longhorn were modified based on the new line impedance. Step 3: Re-stress the Idaho-Northwest path to 2250 MW in the west-to-east direction. Idaho-Northwest flows were re-stressed to 2,250 MW, west-to-east. This required minimal case modification. No other paths were significantly altered. 4.13.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_N_lh case can be found in Appendix K. The results are comparable to Grassland terminus studied in the base case. All contingencies result in acceptable post-transient performance. The following tables compare the post transient results for the Grassland terminus versus Longhorn terminus for several of the notable contingencies discussed in preceding sections. Page 90 of 776 Table 75: Post-Tran. Results Comparison–BF IPC Hem-Grassland/Longhorn 500 kV & Hem 500/230 Xfmr Element Grassland Terminus Longhorn Terminus Brownlee-Hells Canyon 230 kV 98.1% (1396 Amp Rating) 97.2% (1396 Amp Rating) Oxbow – Lolo 230 kV 96.2% (1047 Amp Rating) 96.7% (1047 Amp Rating) Mill Creek – Peterson 230 kV 68.8% (1200 Amp Rating) 69.5% (1200 Amp Rating) Table 76: Post-Tran. Results Comparison – N-1: Hemingway-Grassland/Longhorn 500 kV +PTSN Shunt Element Grassland Terminus Longhorn Terminus Brownlee-Hells Canyon 230 kV 97.5% (1396 Amp Rating) 96.4% (1396 Amp Rating) Oxbow – Lolo 230 kV 95.6% (1047 Amp Rating) 95.9% (1047 Amp Rating) Mill Creek – Peterson 230 kV 68.9% (1200 Amp Rating) 68.8% (1200 Amp Rating) Table 77: Post-Tran. Results Comparison–BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Grassland Terminus Longhorn Terminus Brownlee-Hells Canyon 230 kV 99.6% (1396 Amp Rating) 99.0% (1396 Amp Rating) Oxbow – Lolo 230 kV 98.4% (1047 Amp Rating) 99.5% (1047 Amp Rating) Mill Creek – Peterson 230 kV 67.2% (1200 Amp Rating) 67.2% (1200 Amp Rating) The tables above indicate that a Longhorn northwest terminus has comparable performance to the Grassland northwest terminus studied in previous sections. The Longhorn terminus location results in several potential breaker failures that could result depending on the eventual layout of the Longhorn station. The potential breaker failures are listed below: 1) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr 2) BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV 3) BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV 4) BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV 5) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr 6) BF LH Longhorn-Coyote & Longhorn-Slatt 500 kV 7) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr 8) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr 9) BF LH McNary-Longhorn & Longhorn-Coyote 500 kV 10) BF LH McNary-Longhorn & Longhorn-Slatt 500 kV All Longhorn breaker failure contingencies result in acceptable post-transient performance. Conclusion The post-transient results indicate that a Longhorn 500 kV substation termination will not negatively impact the proposed Idaho-Northwest 2250 MW west-to-east rating. Page 91 of 776 4.13.4 Voltage Stability Real Power Margin Assessment (PV Analysis) and Reactive Power Margin Assessment (VQ Analysis) were not conducted for this sensitivity study due to the close proximity of the Longhorn substation in relation to the Grassland substation studied in previous sections. It was assumed that the results for a Longhorn termination location would be nearly identical to the results for the Grassland termination. Refer to Section 4.1.4 and Appendix A for the voltage stability results associated with the Hemingway to Boardman (Grassland termination) base case study. 4.13.5 Transient Stability Transient stability analysis was not conducted for the Longhorn Sensitivity study due to the close proximity of the Longhorn substation in relation to the Grassland substation studied in previous sections. It was assumed that the results for a Longhorn termination location would be nearly identical to the results for the Grassland termination. Refer to Section 4.1.4 and Appendix A for the transient stability results associated with the Hemingway to Boardman (Grassland termination) base case study. 4.13.6 Remedial Action Schemes For the 16hs2a_2250idnw_N_lh case, each contingency, and the associated switching (RAS), is documented in Appendix K. Details for the notable contingencies can be found below. BF IPC Hemingway-Longhorn 500 kV & Hem 500/230 Xfmr After the loss of this line and transformer, switched VAr devices modeled at LaGrande 230 kV and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post- transient contingency run. Table 78: Shunt Capacitor Switching in BF IPC Hemingway-Longhorn 500 kV & Hem 500/230 Xfmr Shunt Device (Bus) Initial MVAr Post-Transient MVAr LaGrande 230 kV (40621) 0 MVAr 52.2 MVAr Peterson 230 kV (62030) 31.7 MVAr 63.4 MVAr In reality, additional capacitors may switch that are not modeled as part of this contingency N-1: Hemingway-Longhorn 500 kV After the loss of this line, switched VAr devices modeled at LaGrande 230 kV and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Page 92 of 776 Table 79: Shunt Capacitor Switching in N-1: Hemingway-Longhorn 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr This breaker failure contingency opens the Midpoint-Hemingway 500 kV line and the Hemingway 500/230 kV transformer. After the loss of this line and transformer, switched VAr devices modeled at Peterson 230 kV would switch in-service due to depressed voltages on the bus that the device would be controlling. In reality, additional capacitors may switch that are not modeled as part of this contingency Page 93 of 776 4.14 Sensitivity Study: NV Energy Updates Figure 19: Idaho-Northwest (Path 14) 2250 MW, West to East, NV Energy Updates Sensitivity Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 226.4 Mvar 1.09 puPONDROSA 0.0 Mvar 1 5 8 3 M W - 1 4 0 M v a r 1 4 7 6 M W - 1 7 3 M v a r 1 7 0 5 M W - 2 2 8 M v a r 1593 MW -172 Mvar 308 MW 56 Mvar 269 MW 54 Mvar 288 MW 50 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.6 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-88.0 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.5 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.2 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 7 1 M W - 5 0 M v a r 1 6 9 9 M W - 1 1 3 M v a r 1745 MW -98 Mvar 1749 MW -101 Mvar 416 MW -27 Mvar 860 MW 9 Mvar 1530 MW -118 Mvar 1055 MW -77 Mvar 887 MW -106 Mvar 145 MW -23 Mvar 950 MW -159 Mvar 1287 MW 78 Mvar 176 MW 193 Mvar 4 9 9 M W 9 M v a r 176 MW 123 Mvar 398 MW -8 Mvar 866 MW 97 Mvar 157 MW 18 Mvar 148 MW 14 Mvar 731 MW 79 Mvar 1.05 puANTICLIN 533 MW 20 Mvar 532 MW 18 Mvar 17 MW 79 Mvar 15 MW 67 Mvar 276 MW -52 Mvar 398 MW -8 Mvar 111 MW 38 Mvar 336 MW 35 Mvar 719 MW -195 Mvar 139 MW -59 Mvar 0 MW 40 Mvar 15 MW 43 Mvar 559 MW 152 Mvar 587 MW 23 Mvar 423 MW -266 Mvar 1038 MW -115 Mvar 202 MW -37 Mvar 130 MW -25 Mvar 158 MW -23 Mvar 147 MW -22 Mvar 45 MW -0 Mvar 2 5 9 M W 9 M v a r 28 MW 24 Mvar 164 MW -52 Mvar 36 MW -55 Mvar 14 MW -29 Mvar 30 MW -26 Mvar 29 MW -30 Mvar 4 5 5 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 45 MW -0 Mvar 38 MW 8 Mvar 339 MW 42 Mvar 3 0 9 M W - 4 7 M v a r 64 MW -3 Mvar 374 MW -53 Mvar 291 MW -16 Mvar 291 MW -16 Mvar 300 MW -21 Mvar 303 MW -40 Mvar 197 MW -52 Mvar 255 MW -64 Mvar 1 4 M W - 4 5 M v a r 1 4 M W - 4 5 M v a r 1045 MW -119 Mvar 902 MW 63 Mvar 71 MW 27 Mvar 483 MW -65 Mvar 544 MW -8 Mvar 505 MW -45 Mvar 453 MW 19 Mvar 430 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 494 MW -17 Mvar 778 MW -117 Mvar 3 9 6 M W 1 2 1 M v a r 1122 MW -123 Mvar 1 4 8 3 M W 3 M v a r 1 4 5 0 M W 3 0 M v a r 1 2 9 7 M W - 1 M v a r 1299 MW -116 Mvar ID-NW = -2249 MW Grassland = -1390 MW Summer Lake = -288 MW Lolo = -309 MW Walla Walla = -146 MW LaGrande = -130 MW Midpoint West = -1632 MW Borah West = -313 MW Idaho-Sierra = 499 MW N of John Day = 7800 MW COI = 4801 MW PDCI = 3101 MW ID-MT = -338 MW W of McNary = 4294 MW W of Slatt = 4730 MW Alturas Project = 7 MW Path C = -2000 MW Montana Southeast = 599 MW TOT 2B1 = -1 MW TOT 2C = 132 MW 289 MW -91 Mvar 159 MW 57 Mvar 1005 MW -11 Mvar 1154 MW 5 Mvar 28 M W -86 M v a r 9 7 2 M W - 1 2 9 M v a r 1 3 9 0 M W 1 6 9 M v a r 1335 MW -318 Mvar Page 94 of 776 4.14.1 Background & Need for Sensitivity Study After completing the majority of the study work, including Post-Transient Analysis, PV/QV Analysis, and Transient Stability analysis, a few modeling errors were discovered in the base case in Area 64. Modeling errors in the base case are: (1) the Hilltop 345 kV phase shifter is actually located at Bordertown, (2) the Bordertown-Cal Sub 138 kV line does not exist, and (3) the Robinson-Falcon 345 kV line should have two in-service series capacitors. In Sections 4.1-4.8, 4.11 & 4.12, these errors are present. The errors were corrected in the cases in 4.9, 4.10, 4.13, 4.14, and all of the Idaho-Northwest east-to-west cases (Section 5). As a sensitivity study, this section looks at the post-transient response of the system with these minor modifications. In the end, these modeling errors were slight and made little to no difference on the results of the case. 4.14.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_2250idnw_nvmod. Step-by-step development of the 16hs2a_2250idnw_N_nvmod base case: Step 1: Begin with the 16hs2a_2250idnw_N base case. Utilize the base case developed in Section 4.1.2 Steady State Case Stressing. Step 2: Incorporate modifications in Area 64  Hilltop 345 kV phase shifter moved to Bordertown 345 kV.  Bordertown-Cal Sub 138 kV switched out of service.  Added two series capacitors to the Robinson-Falcon 345 kV line. Step 3: Modify the COI and Alturas Project path flows As suggested by the review group, COI was stressed to 4800 MW, and Alturas Project was reduced to 0 MW. Step 4: Re-stress the Idaho-Northwest path to 2250 MW in the west-to-east direction. Idaho-Northwest flows were re-stressed to 2,250 MW, west-to-east. This required minimal case modification. No other paths were significantly altered. Page 95 of 776 4.14.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_nvmod case can be found in Appendix L. Contingencies of note resulted in similar post-transient performance. This case did not result in any post-transient violations. The minor base case modifications to Area 64 had insubstantial impact on the results for the original base case. Any change in the post-transient flows on the system were more likely to be due to COI flow changes, pre-contingency, than the slight modifications to the NV Energy system. 4.14.4 Voltage Stability Real Power Margin Assessment (PV Analysis) and Reactive Power Margin Assessment (VQ Analysis) were not conducted for this sensitivity study due to the similarity to the base case. Refer to earlier sections for PV and QV Analysis results. 4.14.5 Transient Stability Due to the similarity between the 16hs2a_2250idnw_N base case and the 16hs2a_2250idnw_nvmod base case, and the almost identical post-transient results, a transient stability study is unnecessary for this case. 4.14.6 Remedial Action Schemes For the 16hs2a_2250idnw_nvmod case, each contingency, and the associated switching (RAS), is documented in Appendix L. Page 96 of 776 4.15 Simultaneous Interaction Study: MSTI & SWIP (SWIP South – 1770 MW) Figure 20: Idaho-Northwest (Path 14) 2250 MW, West to East, MSTI & SWIP Case 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 461.8 Mvar 1.09 puPONDROSA 0.0 Mvar 1 5 7 5 M W - 1 3 5 M v a r 1 4 6 3 M W - 1 6 8 M v a r 1 6 9 2 M W - 2 3 9 M v a r 1578 MW -184 Mvar 265 MW 55 Mvar 231 MW 52 Mvar 281 MW 13 Mvar 1.04 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD448.3 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.8 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 238.6 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.09 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.6 Mvar 1.09 puPOPULUS 0.0 Mvar 1.04 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.04 puKINPORT 188.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 6 9 M W - 5 2 M v a r 1 7 1 3 M W - 1 1 6 M v a r 1728 MW -104 Mvar 1733 MW -106 Mvar 432 MW -32 Mvar 869 MW 7 Mvar 1538 MW -114 Mvar 1062 MW -72 Mvar 889 MW -101 Mvar 150 MW -27 Mvar 956 MW -147 Mvar 880 MW 199 Mvar 554 MW 146 Mvar 1 1 6 M W - 1 5 M v a r 198 MW -113 Mvar 422 MW 10 Mvar 692 MW 42 Mvar 209 MW 38 Mvar 202 MW 33 Mvar 484 MW 34 Mvar 1.05 puANTICLIN 421 MW -11 Mvar 421 MW -13 Mvar 13 MW -84 Mvar 10 MW -72 Mvar 309 MW -21 Mvar 422 MW 10 Mvar 185 MW 27 Mvar 286 MW 47 Mvar 632 MW -128 Mvar 174 MW -40 Mvar 46 MW -29 Mvar 34 MW -32 Mvar 687 MW 145 Mvar 385 MW 71 Mvar 403 MW -275 Mvar 1055 MW -114 Mvar 209 MW -37 Mvar 136 MW -26 Mvar 165 MW -26 Mvar 134 MW -19 Mvar 31 MW -0 Mvar 2 6 6 M W 1 1 M v a r 51 MW 20 Mvar 171 MW -52 Mvar 25 MW -53 Mvar 3 MW -27 Mvar 19 MW -24 Mvar 17 MW -28 Mvar 4 5 1 M W - 1 0 M v a r HORSEFLT 1.01 puBOISEBCH 96.2 Mvar 0.0 Mvar 1.02 puONTARIO 31 MW -0 Mvar 40 MW 15 Mvar 328 MW 35 Mvar 2 9 8 M W - 4 6 M v a r 71 MW -6 Mvar 355 MW -50 Mvar 271 MW -22 Mvar 271 MW -22 Mvar 279 MW -27 Mvar 281 MW -42 Mvar 194 MW -52 Mvar 250 MW -64 Mvar 1 5 1 M W 3 6 M v a r 1 5 1 M W 3 2 M v a r 1063 MW -113 Mvar 723 MW 139 Mvar 191 MW 2 Mvar 591 MW -67 Mvar 544 MW -8 Mvar 506 MW -45 Mvar 422 MW 22 Mvar 330 MW 9 Mvar 324 MW 10 Mvar 369 MW -9 Mvar 377 MW -10 Mvar 346 MW 36 Mvar 4 1 0 M W 9 6 M v a r 1160 MW -130 Mvar 1 4 7 3 M W 9 M v a r 1 4 3 8 M W 3 6 M v a r 1 2 9 0 M W 2 6 M v a r 1291 MW -88 Mvar ID-NW = -2249 MW Grassland = -1394 MW Summer Lake = -281 MW Lolo = -298 MW Walla Walla = -153 MW LaGrande = -136 MW Idaho-Sierra = 116 MW N of John Day = 7545 MW COI = 4679 MW PDCI = 3101 MW ID-MT = -249 MW W of McNary = 4320 MW W of Slatt = 4809 MW Alturas Project = 4 MW Path C = -1516 MW Montana Southeast = 544 MW TOT 2B1 = -8 MW TOT 2C = -3 MW 282 MW -130 Mvar 182 MW 72 Mvar 1049 MW 19 Mvar 1086 MW -50 Mvar 302 M W 69 M v a r 9 6 3 M W - 1 3 5 M v a r 1 3 9 4 M W 1 3 8 M v a r 1339 MW -342 Mvar MSTI = 1500 MW SWIP North = 1949 MW SWIP South = 1771 MW Page 97 of 776 4.15.1 Background & Need for Simultaneous Interaction Studies In the previous MSTI and SWIP study, Section 4.9, the SWIP South was flowing at 1500 MW north-to- south. In this section, the previous study case was modified such that SWIP South flow is 1770 MW north-to-south. This section was added to memorialize the post-transient contingency results of this new case. 4.15.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case names for this study are: 16hs2a_2250idnw_ms_swips. Step-by-step development of the 16hs2a_2250idnw_ms case: Step 1: Begin with the 16hs2a_2250idnw_ms base case. Utilize the base case developed in Section 4.9. Step 2: Stress the SWIP South path to at least 1750 MW in the north-to-south direction. In order to stress SWIP South to greater than 1750 MW, while maintaining 1950 MW of flow on SWIP North, the phase shifters at Robinson on the 345 kV system were adjusted, and additional power was scheduled from northern areas (Sierra, California, Idaho and the Northwest) to Southern Nevada. 4.15.3 Post Transient Results Post-transient contingency results for the MSTI & SWIP (SWIP South 1770 MW) case can be found in Appendix M. The case name is 16hs2a_2250idnw_ms_swips. No additional post-transient overloads of concern were discovered in this second base case studying MSTI and SWIP. In this case, SWIP South was stressed to 1770 MW north-to-south pre-contingency, rather than the 1500 MW north-to-south stressing in the original base case in Section 4.9. Page 98 of 776 5. Idaho-Northwest, East-to-West Studies Figure 21: Idaho-Northwest (Path 14) 3400 MW, East to West, Base Case 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 99 of 776 5.1 Idaho – Northwest, East-to-West (Path 14) Base Case 5.1.1 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is: 16la1sa_3400idnw_N. Step-by-step development of the 16la1sa_3400idnw_N base case: Step 1: Add the transmission facilities described in the Plan of Service in Section 2.4. The 16la1sa_3400idnw_N case includes all of the additions described in Section 2.4. The Populus to Cedar Hill to Hemingway 500 kV line is required to achieve the Idaho-Northwest proposed rating for all cases in Section 5 (Idaho-Northwest east-to-west base cases). Step 2: Adjust the COI (Path 66) and PDCI (Path 65) to flow in the north-to-south direction. The original 16la1sa base case, downloaded from WECC.biz, has COI & PDCI each flowing at approximately 1800 MW south-to-north. COI & PDCI rarely flow in the south-to-north direction. South-to-north flow on COI reduces the loading on Hemingway-Summer Lake, and increases the loading on Hemingway-Boardman. Studying the Idaho-Northwest path with COI flowing south- to-north would result in a higher rating than the 3400 MW east-to-west rating proposed in this report. By modifying generation patterns in the Northwest and Southwest, COI & PDCI flows were adjusted to flow in the north-to-south direction, reasonably corresponding with actual flows seen while Idaho-Northwest path transfers are high in the east-to-west direction. Step 3: Stress the Idaho-Northwest path to 3400 MW in the east-to-west direction. The Idaho-Northwest path was stressed to 3400 MW in the east-to-west direction by increasing PacifiCorp East (PACE) and Idaho Power generation and scheduling it to the Northwest. Generation in the Northwest was reduced as a sink for the new generation coming out of Wyoming, Utah, and Idaho. Generation adjustments in the Northwest were limited to combined cycle power plants that could be switched in or out, and wind generation. Only minor changes were made to the Northwest hydro generation pattern modeled in the base 16la1sa case. Step 4: Stress simultaneous interaction study paths. The following paths were stressed to their transfer limit in the 16la1sa_3400idnw_N base case simultaneous with Idaho-Northwest at 3400 MW east-to-west: Page 100 of 776 1) Montana-Idaho (Path 18) – Adjusted to the 256 MW south-to-north limit utilizing the Mill Creek 230 kV phase shifter and the Jefferson 161 kV phase shifter. 2) Montana-Northwest (Path 8) – Adjusted to 2200 MW east-to-west by increasing Montana area generation, and reducing Northwest area generation. 3) Montana Southeast (Path 80) – Adjusted to the 600 MW south-to-north limit by increasing generation at Yellowtail, and adjusting the Billing, Rimrock, and Crossover phase shifters. 4) TOT 2B1 (Path 78) – Adjusted to the 560 MW north-to-south limit utilizing the Pinto 345 kV phase shifters. 5) TOT 2C (Path 35) – Adjusted to the 600 MW north-to-south limit utilizing the Harry Allen 345 kV phase shifters. Step 5: Adjusted other paths of concern. The proposed Idaho-Northwest path rating increase is 1000 MW over the 2400 MW east-to- west rating that exists today. Borah West (2557 MW 2012 rating) and Midpoint West (2500 MW 2012 internal rating) were stressed to 3557 MW and 3500 MW, respectively. 5.1.2 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS This is the limiting contingency for the Idaho-Northwest path in the east-to-west direction. This contingency results in overloading the Burns 500 kV series capacitor to 133% of its nominal rating (99% of emergency). To prevent exceeding the emergency rating of the Burns series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. Since the overload is less than the Burns series capacitors emergency rating, this contingency results in acceptable performance. Refer to the table below for additional overloads caused by this contingency: Table 80: Post-transient results – BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS Severe Post-Transient Contingency #2 – N-2: Double Palo Verde Following the loss of two Palo Verde units, Northwest generation responds to the generation deficiency; Hemingway-Boardman and Gateway West offer a low impedance parallel path between the Northwest and Southwest that ends up having to flow through Utah and Colorado lines to go south. The addition of Page 101 of 776 Hemingway-Boardman and Gateway West causes the 2PV contingency to become slightly more severe across the Gladstone-Springer 115 kV transmission line, TOT 2A, TOT 2B, and TOT 2C. The table below compares the existing system to the future system. The existing system is a representation of the system as it stands in 2012. The future system is the study base case and includes the Hemingway-Boardman and Gateway West 500 kV lines. Table 81: Post-transient results – N-2: Double Palo Verde This contingency results in acceptable performance. The difference columns in the table above illustrate the increase in flow after the 2PV on the Existing System and the Future System. The change in flow on the Gladstone-Springer 115 kV line, Pinto 345 kV phase shifters, and Harry Allen 345 kV phase shifters is 0.2%, 1.2%, and 1.6% higher, respectively, on the Future System after the addition of the Hemingway- Boardman and Gateway West 500 kV lines. Severe Post-Transient Contingency #3 – Bus: Summer Lake 500 kV The Summer Lake 500 kV bus outage includes the loss of the Hemingway-Summer Lake 500 kV line. This contingency results in the Hemingway and Boardman 500 kV series capacitors exceeding their nominal ratings. The emergency rating of the Hemingway and Boardman 500 kV series capacitors will be designed for approximately 150% of nominal so the post-transient loading will be below emergency ratings. Table 82: Post-transient results – Bus: Summer Lake 500 kV Severe Post-Transient Contingency #4 – BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS This is the most severe contingency across the Idaho Power internal transmission system. For this contingency, RAS action is required to (1) bypass a portion of the Midpoint 500 kV series capacitor, and (2) insert 400 MVAr of shunt capacitors on the Midpoint 500 kV bus. This contingency also results in Page 102 of 776 post-transient voltage deviations between 5-10% at Amps 69 kV. WECC System Performance Criteria allows for post-transient voltage deviations of up to 10% for N-2 or breaker failure contingencies. Refer to the table below for overloads caused by this contingency: Table 83: Post-transient results – BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS Conclusions Several of the notable post transient contingencies resulting in more severe system stressing were noted above. All of these contingencies as well as all other post-transient contingencies result in acceptable performance. The results of contingencies associated with potential simultaneous interactions are in the sections that follow. Ultimately, the results indicate that Idaho-Northwest can achieve a 3400 MW east-to-west rating simultaneous with all other paths. 5.1.3 Voltage Stability The Idaho-Northwest base case utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest base case, all contingencies have a post-transient solution with Idaho- Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_N base case can be found in Appendix B. Busses studied utilizing VQ Analysis are: Harry Allen 345 kV, Hemingway 500 kV, Midpoint 500 kV, Mill Creek 230 kV, Pinto 345 kV, Populus 500 kV, Taft 500 kV, and Yellowtail 230 kV. The tables below highlight a sample of the reactive margins at Hemingway, Midpoint and Populus. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Page 103 of 776 Table 84: Hemingway 500 kV bus reactive margin results (sample) Contingency Name (Hemingway) Voltage @ Qmin Margin (MVAr) Comments BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR + RAS 0.70 -964 Worst VQ Contingency BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.70 -1148 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.85 -1198 Table 85: Midpoint 500 kV bus reactive margin results (sample) Contingency Name (Midpoint) Voltage @ Qmin Margin (MVAr) Comments BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.73 -992 Worst VQ Contingency N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.83 -1205 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.81 -1236 Table 86: Populus 500 kV bus reactive margin results (sample) Contingency Name (Populus) Voltage @ Qmin Margin (MVAr) Comments N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.84 -861 Worst VQ Contingency N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.86 -1030 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.83 -1082 Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Voltage stability is not an issue for the Idaho-Northwest path. 5.1.4 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. The 16la1sa_3400idnw_N base case was the basis for all transient stability study results for the Idaho- Northwest v Montana-Idaho, Montana-Northwest, Montana Southeast, TOT 2B1, and TOT 2C simultaneous interaction studies. The performance of transient stability contingencies are generally ranked based upon transient voltage dip. The worst N-1 contingency is the loss of the Populus-Cedar Hill-Hemingway 500 kV line (part of the Gateway West upgrades). This contingency results in a voltage dip of approximately 13% on the Midpoint 500 kV bus. 13% is well within the acceptable limits. The worst multi-element contingency is a breaker failure at Hemingway substation resulting in the loss of the Populus-Cedar Hill-Hemingway 500 kV line & Hemingway 500/230 kV transformer. This contingency results in a voltage dip of approximately 14% on the Midpoint 500 kV bus. Again, 14% is well within the acceptable limits. Page 104 of 776 5.1.5 Remedial Action Schemes For the 16la1sa_3400idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix B. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS This contingency opens the Hemingway-Grassland 500 kV line, and the Hemingway 500/230 kV transformer. To prevent exceeding the emergency rating of the Burns series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. After the loss of this line and transformer, switched VAr devices modeled at Amps 69 kV, Dillon 69 kV, LaGrande 230 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 87: Shunt Capacitor Switching in BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #2 – N-2: Double Palo Verde This contingency opens two Palo Verde generators operating at approximately 1400 MW each. After this generation loss, switched VAr devices modeled at Durango 115 kV, Pinto 138 kV, and York Canyon 115 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 88: Shunt Capacitor Switching in N-2: Double Palo Verde In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #3 – Bus: Summer Lake 500 kV This contingency does not have any associated RAS. Page 105 of 776 For the existing Idaho-Northwest system, rated at 2400 MW east-to-west, this contingency would have required the tripping of ~1000 MW at Jim Bridger Power Plant. Severe Post-Transient Contingency #4 – BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS This contingency opens the Populus-Cedar Hill-Hemingway 500 kV line, and the Hemingway 500/230 kV transformer. To prevent exceeding the emergency rating of the Midpoint 500 kV series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. After the loss of this line and transformer, switched VAr devices modeled at Amps 69 kV, Midpoint 500 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 89: Shunt Capacitor Switching in BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 106 of 776 5.2 Simultaneous Interaction Study: Alturas Project, S-N (Path 76) Figure 22: Idaho-Northwest (Path 14) 3400 MW, East to West v. Alturas Project (Path 76), South to North, Base Case 1.08 puMALIN-290.4 Mvar 0.0 Mvar 0.0 Mvar -174.4 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.1 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.9 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 462.0 Mvar 1.08 puPONDROSA -286.9 Mvar 2 9 1 M W - 2 0 6 M v a r 2 5 5 M W - 2 4 9 M v a r 2 4 1 M W - 1 6 2 M v a r 393 MW -37 Mvar 109 MW -86 Mvar 99 MW -90 Mvar 1372 MW 139 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.7 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 189.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.06 puIDAHO-NV 1.03 puKINPORT 184.1 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 6 M W 4 6 M v a r 7 1 0 M W - 1 5 1 M v a r 92 MW -6 Mvar 93 MW -7 Mvar 541 MW 4 Mvar 755 MW -81 Mvar 25 MW 87 Mvar 474 MW -46 Mvar 583 MW -101 Mvar 1099 MW -271 Mvar 109 MW -144 Mvar 1179 MW -78 Mvar 1500 MW 164 Mvar 1 4 3 M W - 2 8 M v a r 1502 MW 83 Mvar 778 MW -86 Mvar 424 MW 3 Mvar 404 MW -95 Mvar 420 MW -101 Mvar 102 MW -47 Mvar 1.05 puANTICLIN 630 MW 34 Mvar 629 MW 34 Mvar 692 MW -69 Mvar 684 MW -107 Mvar 431 MW -0 Mvar 778 MW -86 Mvar 222 MW -79 Mvar 419 MW -15 Mvar 633 MW -77 Mvar 336 MW 8 Mvar 438 MW -96 Mvar 476 MW -104 Mvar 1425 MW 148 Mvar 1159 MW -149 Mvar 329 MW -371 Mvar 622 MW -43 Mvar 155 MW -40 Mvar 197 MW -22 Mvar 169 MW -18 Mvar 31 MW 4 Mvar 74 MW -15 Mvar 1 2 2 M W - 4 9 M v a r 67 MW -39 Mvar 287 MW -58 Mvar 164 MW -67 Mvar 153 MW -45 Mvar 162 MW -42 Mvar 163 MW -45 Mvar 5 1 M W 9 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.2 Mvar 1.03 puONTARIO 74 MW -15 Mvar 38 MW -17 Mvar 117 MW -22 Mvar 2 2 8 M W - 1 9 M v a r 203 MW -16 Mvar 124 MW 1 Mvar 14 MW 12 Mvar 14 MW 12 Mvar 15 MW 12 Mvar 12 MW 23 Mvar 54 MW 5 Mvar 69 MW 7 Mvar 1 3 3 M W 6 5 M v a r 1 3 3 M W 6 1 M v a r 625 MW -157 Mvar 1238 MW -323 Mvar 611 MW -80 Mvar 420 MW -76 Mvar 301 MW 40 Mvar 279 MW -9 Mvar 249 MW 42 Mvar 234 MW -19 Mvar 230 MW -18 Mvar 352 MW 2 Mvar 360 MW 1 Mvar 594 MW -50 Mvar 3 6 M W 2 4 M v a r 890 MW -76 Mvar 2 7 1 M W - 3 0 M v a r 2 5 4 M W - 1 0 M v a r 9 3 2 M W - 1 9 5 M v a r 933 MW -269 Mvar ID-NW = 3400 MW Grassland = 1259 MW Summer Lake = 1372 MW Lolo = 228 MW Walla Walla = 305 MW LaGrande = 197 MW Midpoint West = 3268 MW Borah West = 3419 MW Idaho-Sierra = 143 MW N of John Day = -105 MW COI = 1562 MW PDCI = 1100 MW ID-MT = 256 MWW of McNary = 1979 MW W of Slatt = 2982 MW Alturas Project = -290 MW Path C = 716 MW Montana Southeast = -600 MW TOT 2B1 = 560 MW TOT 2C = 550 MW 1348 MW -166 Mvar 23 MW -51 Mvar 200 MW -79 Mvar 85 MW -3 Mvar 267 M W 126 M v a r 3 4 1 M W - 2 7 3 M v a r 1 2 5 9 M W - 2 9 9 M v a r 1308 MW 53 Mvar Page 107 of 776 5.2.1 Background & Need for Simultaneous Interaction Study The Alturas Project transmission path (Path 76) is made up of single transmission line extending from western Nevada to northeast California. The metering point for this line is the Hilltop substation. In the 16la1sa_3400idnw_Path76 base case, the flow measured at Hilltop is 290 MW, just shy of the 300 MW limit. The path was limited to 290 MW in the simultaneous interaction due to VAr flow through the Bordertown 345 kV phase shifter, rated at 300 MVA, and losses between Bordertown and Hilltop. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the Alturas Project increases to 320 MW, a 10% increase on the path. Due to this sizable increase in path transfers, the Alturas Project path may have a simultaneous interaction with the Idaho-Northwest path. In order to stress the Alturas Project path to ~300 MW, the Bordertown 345 kV phase shifter was adjusted to be loaded to its nominal rating in the 16la1sa_3400idnw_Path76 base case. Many of the studied contingencies resulted in nominal overloads on this 345 kV phase shifter; however, no contingency resulted in overloading the phase shifter beyond its 370 MVA emergency rating. 5.2.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is: 16la1sa_3400idnw_N_Path76. Information about the case, such as area generation/load patterns, and path transfers is located in Appendix H. Step-by-step development of the 16la1sa_3400idnw_Path76 base case: Step 1: Begin with the 16la1sa_3400idnw_N base case Utilize the base case developed in Section 5.1.1 Steady State Case Stressing. Step 2: Stress the Alturas Project transmission path (Path 76) to 300 MW south-to-north Utilize the Bordertown 345 kV phase shifting transformer. 5.2.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_Path76 case can be found in Appendix H. Details for the severe/notable contingencies can be found below. Page 108 of 776 Most Severe Post-Transient Contingency – N-1: Robinson-Harry Allen 500 kV The pre-contingency flow on the Robinson-Harry Allen 500 kV line is ~412 MW north-to-south. This contingency results in overloading the Bordertown 345 kV phase shifter to 120% of its nominal rating (97% of emergency). Since the overload is less than the Bordertown 345 kV phase shifting transformers emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 90: Post-transient results – N-1: Robinson-Harry Allen 500 kV Most Severe Idaho-Northwest Contingency – Bus: Summer Lake 500 kV This contingency results in overloading the Bordertown 345 kV phase shifter to 113% of its nominal rating (92% of emergency). Since the overload is less than the Bordertown 345 kV phase shifting transformers emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 91: Post-transient results – Bus: Summer Lake 500 kV Other Notable Contingencies related to Alturas Project N-1: Cal Sub 120 kV Phase Shifter – The pre-contingency flow through the Cal Sub 120 kV phase shifter is ~106 MW. This contingency results in overloading the Bordertown 345 kV phase shifter to 109% of its nominal rating (89% of emergency). This contingency could be much more severe if the Cal Sub 120 kV phase shifter were loaded closer to its rating, simultaneous with Path 76 at its rating. BF IPC Populus-Chill-Hem 500 kV & Hem 500/230 Xfmr – This contingency results in overloading the Midpoint 500 kV series capacitor to 101% of its emergency rating. A RAS to bypass a portion of this series capacitor will be required in order to avoid this overload. This RAS action was also discussed in Section 5.1.2 for the same contingency. N-1: Midpoint-Humboldt 345 kV Line – This contingency can be a problem when the Alturas Project path is at its maximum flow levels, however, in this case the Midpoint-Humboldt line was only flowing at 143 MW north-to-south. Loss of Midpoint-Humboldt in this configuration would actually act to reduce the flow on the Alturas project path. Page 109 of 776 Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with Alturas Project at 300 MW south-to-north. 5.2.4 Voltage Stability The Idaho-Northwest v Alturas Project study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Alturas Project study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the Alturas Project path at its 300 MW south-to-north rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_Path76 base case can be found in Appendix H. Busses studied utilizing VQ Analysis are: Bordertown 345 kV, Hemingway 500 kV, Hilltop 230 kV, Humboldt 345 kV, Malin 500 kV, Midpoint 500 kV, Populus 500 kV, and Valley Road 345 kV. The tables below highlight a sample of the reactive margins at Bordertown, Hilltop and Valley Road. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 92: Bordertown 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: ROBINSON-HARRY ALLEN 500 KV 0.70 -741 Worst VQ contingency BF PGE GRASSLAND-CEDAR SPRING & HEM-GRASSLAND 500 0.70 -767 Second Worst VQ contingency BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.70 -768 Worst VQ contingency related to ID-NW Table 93: Hilltop 230 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: MALIN-HILLTOP 230 KV 0.70 -181 Worst VQ contingency BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.70 -249 Second Worst VQ Contingency BF PGE GRASSLAND-CEDAR SPRING & HEM-GRASSLAND 500 0.70 -319 Worst VQ N-1 contingency Page 110 of 776 Table 94: Valley Road 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: ROBINSON-HARRY ALLEN 500 KV 0.70 -850 Worst VQ contingency N-1: CAL SUB 120 KV PHASE SHIFTER 0.70 -871 Worst VQ contingency related to ID-NW BF PGE GRASSLAND-CEDAR SPRING & HEM-GRASSLAND 500 0.70 -879 Worst VQ N-1 contingency Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. Idaho Power busses have sufficient reactive margin for all contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the Alturas Project path at the flow levels studied. 5.2.5 Transient Stability A separate transient stability study for the 16la1sa_3400idnw_Path76 case was not completed due to the extreme similarities between the 16la1sa_3400idnw_N case and the 16la1sa_3400idnw_Path76 base case. A separate transient stability study would yield equivalent results. Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. 5.2.6 Remedial Action Schemes For the 16la1sa_3400idnw_Path76 base case, each contingency, and the associated switching (RAS), is documented in Appendix H. Details for the severe/notable contingencies can be found below. Most Severe Post-Transient Contingency – N-1: Robinson-Harry Allen 500 kV This contingency does not have any associated RAS. Most Severe Idaho-Northwest Contingency – Bus: Summer Lake 500 kV This contingency does not have any associated RAS. Notable Contingency – N-1: Cal Sub 120 kV Phase Shifter This contingency does not have any associated RAS. Notable Contingency – BF IPC Populus-Chill-Hem 500 kV & Hem 500/230 Xfmr This contingency opens the Populus-Cedar Hill-Hemingway 500 kV line, and the Hemingway 500/230 kV transformer. To prevent exceeding the emergency rating of the Midpoint 500 kV series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. Post-contingency, switched VAr devices modeled at Amps 69 kV, Midpoint 500 kV, and Peterson 230 kV would switch in-service due to Page 111 of 776 depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 95: Shunt Capacitor Switching in BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 112 of 776 5.3 Simultaneous Interaction Study: Idaho – Sierra, N-S (Path 16) Figure 23: Idaho-Northwest (Path 14) 3400 MW, East to West v. Idaho-Sierra (Path 16), North to South, Base Case 1.08 puMALIN-289.7 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -290.2 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -864.5 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 457.5 Mvar 1.07 puPONDROSA -286.0 Mvar 5 0 8 M W - 2 0 5 M v a r 4 8 3 M W - 2 6 7 M v a r 2 2 M W - 1 5 7 M v a r 154 MW -8 Mvar 47 MW -50 Mvar 45 MW -59 Mvar 1359 MW 130 Mvar 1.03 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.3 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT -87.7 Mvar 1.07 puCEDARHIL-85.3 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 185.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.08 puMARION -467.0 Mvar 3 0 6 M W 4 4 M v a r 8 0 1 M W - 1 3 8 M v a r 287 MW -7 Mvar 288 MW -8 Mvar 491 MW 15 Mvar 730 MW -64 Mvar 94 MW 76 Mvar 405 MW -33 Mvar 614 MW -102 Mvar 1074 MW -259 Mvar 209 MW -157 Mvar 986 MW -61 Mvar 1171 MW -80 Mvar 5 0 0 M W 1 0 M v a r 1172 MW 82 Mvar 559 MW -52 Mvar 442 MW -23 Mvar 274 MW -30 Mvar 284 MW -33 Mvar 147 MW 4 Mvar 1.05 puANTICLIN 617 MW 34 Mvar 616 MW 35 Mvar 452 MW -10 Mvar 447 MW -34 Mvar 258 MW 89 Mvar 559 MW -52 Mvar 205 MW -61 Mvar 374 MW -4 Mvar 625 MW -70 Mvar 234 MW -18 Mvar 285 MW -48 Mvar 308 MW -52 Mvar 1342 MW 158 Mvar 1132 MW -132 Mvar 411 MW -386 Mvar 665 MW -53 Mvar 186 MW -48 Mvar 229 MW -23 Mvar 202 MW -14 Mvar 24 MW 9 Mvar 80 MW -22 Mvar 1 5 2 M W - 6 3 M v a r 103 MW -55 Mvar 341 MW -77 Mvar 181 MW -79 Mvar 171 MW -55 Mvar 180 MW -52 Mvar 181 MW -56 Mvar 4 1 M W 1 0 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.0 Mvar 1.03 puONTARIO 80 MW -22 Mvar 44 MW -19 Mvar 147 MW -37 Mvar 2 7 0 M W - 1 9 M v a r 228 MW -15 Mvar 44 MW 31 Mvar 30 MW 9 Mvar 30 MW 9 Mvar 31 MW 10 Mvar 31 MW 19 Mvar 27 MW 8 Mvar 35 MW 10 Mvar 1 0 5 M W 6 3 M v a r 1 0 5 M W 6 0 M v a r 668 MW -158 Mvar 1109 MW -366 Mvar 576 MW -88 Mvar 419 MW -76 Mvar 307 MW 40 Mvar 285 MW -9 Mvar 254 MW 42 Mvar 239 MW -19 Mvar 235 MW -19 Mvar 360 MW 1 Mvar 369 MW 0 Mvar 611 MW -21 Mvar 7 8 M W 3 M v a r 906 MW -83 Mvar 5 1 0 M W - 6 0 M v a r 4 8 0 M W - 3 2 M v a r 1 1 5 8 M W - 1 9 7 M v a r 1159 MW -298 Mvar ID-NW = 3400 MW Grassland = 1140 MW Summer Lake = 1359 MW Lolo = 270 MW Walla Walla = 363 MW LaGrande = 229 MW Midpoint West = 2247 MW Borah West = 2441 MW Idaho-Sierra = 500 MW N of John Day = 207 MW COI = 2407 MW PDCI = 1100 MW ID-MT = 165 MW W of McNary = 2115 MWW of Slatt = 3108 MW Alturas Project = -255 MW Path C = -322 MW Montana Southeast = -555 MW TOT 2B1 = 560 MW TOT 2C = 596 MW 1335 MW -171 Mvar 396 MW -90 Mvar 138 MW -82 Mvar 32 MW -4 Mvar 210 M W 122 M v a r 3 6 8 M W - 2 6 3 M v a r 1 1 4 0 M W - 2 1 6 M v a r 1180 MW -36 Mvar Page 113 of 776 5.3.1 Background & Need for Simultaneous Interaction Studies The Idaho-Sierra transmission path (Path 16) is made up of single transmission line extending from Midpoint substation in southern Idaho, to Humboldt substation in northern Nevada. In the 16la1sa_3400idnw_nv base case, the flow measured at the Idaho-Nevada border is 500 MW, pre- contingency. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the Idaho- Sierra path increases to 568 MW, a 14% increase on the path. Due to this sizable increase in path transfers, the Idaho-Sierra path may have a simultaneous interaction with the Idaho-Northwest path. 5.3.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is: 16la1sa_3400idnw_nv. Step-by-step development of the 16la1sa_3400idnw_nv base case: Step 1: Begin with the 16la1sa_3400idnw_N base case Utilize the base case developed in Section 5.1.1 Steady State Case Stressing. Step 2: Stress Idaho-Sierra to 500 MW north-to-south Schedule generation from the Northwest and Idaho to Sierra and the Southwest (southern California and Arizona). Step 3: Un-stress Phase Shifters If phase shifters were being utilized to stress a path, such as the Mill Creek phase shifter stressing the Montana-Idaho path, the phase shifter was moved to zero degrees. 5.3.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_nv case can be found in Appendix I. Details for the severe/notable contingencies can be found below. Severe Post-Trans Contingency #1 – BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr This contingency results in overloading the Hines 138/115 kV transformer to 110% of its nominal rating (99% of emergency). Since the overload is less than the Hines 138/115 kV transformers emergency rating, this contingency results in acceptable performance. Page 114 of 776 Severe Post-Transient Contingency #2 – N-2: Double Palo Verde This contingency results in overloading the Harry Allen 345 kV phase shifters to 123% of their nominal rating (99.6% of emergency). Since the contingency does not overload the Harry Allen 345 kV phase shifters beyond their emergency rating, this contingency results in acceptable performance. Severe Post-Transient Contingency #3 – N-1: Huntington-Pinto-Four Corners 345 kV This contingency results in overloading the Harry Allen 345 kV phase shifters to 119% of its nominal rating (97% of emergency). Since the overload is less than the Harry Allen 345 kV phase shifters emergency rating, this contingency results in acceptable performance. Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with Idaho-Sierra at 500 MW north-to-south. 5.3.4 Voltage Stability The Idaho-Northwest v Idaho-Sierra study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Idaho-Sierra study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the Idaho-Sierra path at its 500 MW north-to-south rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_nv base case can be found in Appendix I. Busses studied utilizing VQ Analysis are: Bordertown 345 kV, Hemingway 500 kV, Hilltop 230 kV, Humboldt 345 kV, Malin 500 kV, Midpoint 500 kV, Populus 500 kV, and Valley Road 345 kV. The table below highlights a sample of the reactive margins at Humboldt. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 96: Humboldt 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: HUMBOLDT-COYOTE CK 345 KV 0.70 -215 Worst VQ contingency BF IPC MIDPOINT-HEM 500 KV & HEM 500/230 XFMR 0.70 -408 Worst VQ contingency related to Idaho Power BUS: SUMMER LAKE 500 KV 0.70 -420 Worst VQ contingency related to Idaho-NW Page 115 of 776 Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the Idaho-Sierra path at the flow levels studied. 5.3.5 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_nv case can be found in Appendix I. The 16la1sa_3400idnw_nv base case was the basis for all transient stability study results for the Idaho- Northwest v Idaho-Sierra (Path 16) simultaneous interaction study. The performance of transient stability contingencies are generally ranked based upon transient voltage dip. The worst N-1 contingency is the loss of the Hemingway-Summer Lake 500 kV line. This contingency results in a voltage dip of approximately 9% on the West John Day 138 kV bus. 9% is well within the acceptable limits. The worst multi-element contingency is a breaker failure at Hemingway substation resulting in the loss of the Midpoint-Hemingway 500 kV line & Hemingway 500/230 kV transformer. This contingency results in a voltage dip of approximately 13% on the West John Day 138 kV bus. Again, 13% is well within the acceptable limits. 5.3.6 Remedial Action Schemes For the 16la1sa_3400idnw_nv base case, each contingency, and the associated switching (RAS), is documented in Appendix I. Details for the severe/notable contingencies can be found below. Severe Post-Trans Contingency #1 – BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr This contingency opens the Hemingway-Summer Lake 500 kV line, and the Hemingway 500/230 kV transformer. After the loss of this line and transformer, switched VAr devices modeled at Harney 115 kV, LaGrande 230 kV and Walla Walla 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 97: Shunt Capacitor Switching in BF IPC Hemingway-Summer Lake 500 kV & Hem 500/230 Xfmr In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 116 of 776 Severe Post-Transient Contingency #2 – N-2: Double Palo Verde This contingency opens two Palo Verde generators operating at approximately 1400 MW each. After this generation loss, switched VAr devices modeled at Durango 115 kV, Peigan 4 240 kV, Pinto 138 kV, and York Canyon 115 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 98: Shunt Capacitor Switching in N-2: Double Palo Verde In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #3 – N-1: Huntington-Pinto-Four Corners 345 kV This contingency does not have any associated RAS. Page 117 of 776 5.4 Simultaneous Interaction Study: Montana-Idaho, S-N (Path 18) Figure 24: Idaho-Northwest (Path 14) 3400 MW, East to West v. Montana-Idaho (Path 18), South to North, Base Case 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 118 of 776 5.4.1 Background & Need for Simultaneous Interaction Studies The Montana-Idaho transmission path (Path 18) has a 256 MW south-to-north rating and consists of two transmission lines: (1) a 230 kV line that extends between Mill Creek, Amps and Brady and (2) a 161 kV line that extends between Dillon, Big Grassy, and Jefferson. In the base case, the path is flowing at 257 MW. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the path increases to 329 MW, a 28% increase. Due to this sizable increase in path transfers, the Idaho-Montana path may have a simultaneous interaction with the Idaho-Northwest path. 5.4.2 Steady State Case Stressing The study of Idaho-Northwest v Montana-Idaho utilized the 16la1sa_3400idnw_N base case. This base case is described in Section 5.1.1. See Section 5.1.1 for the discussion on steady state case stressing. 5.4.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. Details for the severe/notable contingencies can be found below. Most Severe Post-Transient Contingency: N-2: Broadview-Garrison #1 and #2 500 kV + RAS This contingency results in overloading the Jefferson 161 kV phase shifter to 113% of its nominal rating (112 MVA) and 86% of its emergency rating (146.7 MVA). Since the overload is less than the Jefferson 161 kV phase shifters emergency rating, this contingency results in acceptable performance. Post- transient voltage deviations are within WECC System Performance Criteria allowable 10% for N-2 contingencies. Although the most severe, this contingency results in acceptable performance. Most Severe Idaho-Northwest Contingency: BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS This contingency results in overloading the Jefferson 161 kV phase shifter to 110% of its nominal rating (84% of emergency). This contingency results in acceptable performance Other Notable Contingencies related to Montana (all result in acceptable performance): BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 kV Xfmr + RAS – This contingency results in post- transient voltage deviations between 5-10% at Peterson 230 kV and Amps 230 kV. N-1: Hemingway-Grassland 500 kV – This contingency results in overloading the Jefferson 161 kV phase shifter to 109% of its nominal rating (83% of emergency). Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with Montana-Idaho at 256 MW south-to-north. Page 119 of 776 5.4.4 Voltage Stability The Idaho-Northwest v Montana-Idaho study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Idaho-Montana study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the Montana-Idaho path at its 256 MW south-to-north rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_N base case can be found in Appendix B. Busses studied utilizing VQ Analysis are: Harry Allen 345 kV, Hemingway 500 kV, Midpoint 500 kV, Mill Creek 230 kV, Pinto 345 kV, Populus 500 kV, Taft 500 kV, and Yellowtail 230 kV. The table below highlights a sample of the reactive margins at Mill Creek. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 99: Mill Creek 230 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.83 -296 Worst VQ contingency BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR+RAS 0.82 -380 Worst VQ related to Idaho Power BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR + RAS 0.80 -443 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability interaction between the Idaho- Northwest path and the Montana-Idaho path at the flow levels studied. 5.4.5 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. A write up of these results can be found in Section 5.1.4. Page 120 of 776 5.4.6 Remedial Action Schemes For the 16la1sa_3400idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix B. Details for the severe/notable contingencies can be found below. Most Severe Post-Transient Contingency: N-2: Broadview-Garrison #1 and #2 500 kV + RAS For this contingency, given the associated flows on the Montana-Northwest path, the Colstrip ATR would be expected to trip three Colstrip units (the two big units, and a little unit). After the loss of this line and transformer, switched VAr devices would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in/out of service in this post-transient contingency run. Table 100: Shunt Capacitor Switching in N-2: Broadview-Garrison #1 & #2 500 kV + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Most Severe Idaho-Northwest Contingency: BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS For this contingency, to prevent exceeding the emergency rating of the Burns series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. After the loss of this line and transformer, switched VAr devices modeled at Amps 69 kV, Dillon 69 kV, Peterson 230 kV, and LaGrande 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 101: Shunt Capacitor Switching in BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 121 of 776 Notable Contingency: BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 kV Xfmr + RAS This contingency opens the Populus-Cedar Hill-Hemingway 500 kV line, and the Hemingway 500/230 kV transformer. To prevent exceeding the emergency rating of the Midpoint 500 kV series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. After the loss of this line and transformer, switched VAr devices modeled at Amps 69 kV, Midpoint 500 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 102: Shunt Capacitor Switching in BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Notable Contingency: N-1: Hemingway-Grassland 500 kV This contingency opens the Hemingway-Grassland 500 kV line. After the loss of this line and transformer, switched VAr devices modeled at Dillon 161 kV, Harney 115 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 103: Shunt Capacitor Switching in N-1: Hemingway-Grassland 500 kV In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 122 of 776 5.5 Simultaneous Interaction Study: Montana-Northwest, E-W (Path 8) Figure 25: Idaho-Northwest (Path 14) 3400 MW, East to West v. Montana-Northwest (Path 8), East to West, Base Case 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 123 of 776 5.5.1 Background & Need for Simultaneous Interaction Studies The Montana-Northwest path is made up of two 500 kV lines, four 230 kV lines, three 115 kV lines, and a 230/115 kV transformer connecting the Montana transmission system to the Northwest transmission system. In the 16la1sa_3400idnw_N base case, the flow on the Montana-Northwest path is 2200 MW, pre-contingency. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the Montana-Northwest path increases to 2332 MW, a 6% increase on the path. Although 6% is less than the 10% threshold, the project review group asked that a simultaneous interaction study be performed between the Idaho-Northwest path and the Montana-Northwest path. 5.5.2 Steady State Case Stressing The study of Idaho-Northwest v Montana-Northwest utilized the 16la1sa_3400idnw_N base case. The 16la1sa_3400idnw_N base case is described in Section 5.1.1. See Section 5.1.1 for the discussion on steady state case stressing. 5.5.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. Details for the severe/notable contingencies can be found below. Post-Transient Contingencies See Section 5.4.3 for a detailed discussion on contingencies that impact the Montana area. Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with Montana-Northwest at 2200 MW east-to-west. 5.5.4 Voltage Stability The Idaho-Northwest v Montana-Northwest study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Montana-Northwest study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the Montana-Northwest path at its 2200 MW rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). Page 124 of 776 VQ results for the 16la1sa_3400idnw_N base case can be found in Appendix B. Busses studied utilizing VQ Analysis are: Harry Allen 345 kV, Hemingway 500 kV, Midpoint 500 kV, Mill Creek 230 kV, Pinto 345 kV, Populus 500 kV, Taft 500 kV and Yellowtail 230 kV. The table below highlights a sample of the reactive margin at Taft. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 104: Taft 500 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.91 -368 Worst VQ contingency BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.95 -736 Worst VQ related to Idaho Power BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR + RAS 0.84 -856 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the Montana-Northwest path at the flow levels studied. 5.5.5 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. A write up of these results can be found in Section 5.1.4. 5.5.6 Remedial Action Schemes See Section 5.4.6 for a detailed discussion on RAS associated with contingencies that impact the Montana area. Page 125 of 776 5.6 Simultaneous Interaction Study: Montana Southeast, S-N (Path 80) Figure 26: Idaho-Northwest (Path 14) 3400 MW, East to West v. Montana Southeast (Path 80), South to North, Base Case 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 126 of 776 5.6.1 Background & Need for Simultaneous Interaction Studies The Montana Southeast path is made up of three 230 kV lines and one 161 kV line connecting the Montana transmission system to the northern Wyoming transmission system. In the 16la1sa_3400idnw_N base case, the flow on the Montana Southeast path is 600 MW south-to-north, pre-contingency. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the Montana Southeast path increases to 677 MW, a 13% increase on the path. Due to this sizable increase in path transfers, the Montana Southeast path may have a simultaneous interaction with the Idaho- Northwest path. 5.6.2 Steady State Case Stressing The study of Idaho-Northwest v Montana Southeast utilized the 16la1sa_3400idnw_N base case. The 16la1sa_3400idnw_N base case is described in Section 5.1.1. See Section 5.1.1 for the discussion on steady state case stressing. 5.6.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. Post-Transient Contingencies See Section 5.4.3 for a detailed discussion on contingencies that impact the Montana area. None of the studied contingencies had an impact on the transmission system around Billings and Yellowtail. Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with Montana Southeast at 600 MW south-to-north. 5.6.4 Voltage Stability The Idaho-Northwest v Montana Southeast study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v Montana Southeast study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its 3400 MW rating, simultaneous with the Montana Southeast path at its 600 MW south-to-north rating. Page 127 of 776 VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_N base case can be found in Appendix B. Busses studied utilizing VQ Analysis are: Harry Allen 345 kV, Hemingway 500 kV, Midpoint 500 kV, Mill Creek 230 kV, Pinto 345 kV, Populus 500 kV, Taft 500 kV, and Yellowtail 230 kV. The table below highlights a sample of the reactive margins at Yellowtail. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 105: Yellowtail 230 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.92 -140 Worst VQ contingency BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.77 -330 Worst VQ related to Idaho Power BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR + RAS 0.75 -378 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the Montana Southeast path at the flow levels studied. 5.6.5 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. A write up of these results can be found in Section 5.1.4. 5.6.6 Remedial Action Schemes See Section 5.4.6 for a detailed discussion on RAS associated with contingencies that impact the Montana area. Page 128 of 776 5.7 Simultaneous Interaction Study: PG&E – Sierra, E-W (Path 24) Figure 27: Idaho-Northwest (Path 14) 3400 MW, East to West v. PG&E-Sierra (Path 24), East to West, Base Case 1.08 puMALIN-291.7 Mvar 0.0 Mvar 0.0 Mvar -175.1 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -292.3 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -868.5 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 460.2 Mvar 1.08 puPONDROSA -287.5 Mvar 2 7 5 M W - 2 1 4 M v a r 2 3 8 M W - 2 5 7 M v a r 2 5 3 M W - 1 5 7 M v a r 409 MW -34 Mvar 93 MW -74 Mvar 85 MW -79 Mvar 1369 MW 129 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.8 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.7 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.8 Mvar 1 5 4 M W 4 2 M v a r 7 0 1 M W - 1 5 6 M v a r 77 MW -14 Mvar 77 MW -15 Mvar 544 MW 5 Mvar 754 MW -82 Mvar 21 MW 88 Mvar 478 MW -47 Mvar 581 MW -102 Mvar 1099 MW -274 Mvar 103 MW -143 Mvar 1170 MW -82 Mvar 1518 MW 173 Mvar 2 2 3 M W - 3 2 M v a r 1520 MW 97 Mvar 800 MW -83 Mvar 394 MW 1 Mvar 425 MW -98 Mvar 442 MW -105 Mvar 96 MW -32 Mvar 1.05 puANTICLIN 639 MW 39 Mvar 638 MW 39 Mvar 701 MW -71 Mvar 693 MW -110 Mvar 420 MW -7 Mvar 800 MW -83 Mvar 230 MW -76 Mvar 424 MW -16 Mvar 639 MW -81 Mvar 348 MW 13 Mvar 456 MW -97 Mvar 494 MW -104 Mvar 1451 MW 158 Mvar 1194 MW -164 Mvar 327 MW -370 Mvar 618 MW -42 Mvar 154 MW -40 Mvar 196 MW -22 Mvar 168 MW -18 Mvar 31 MW 4 Mvar 74 MW -15 Mvar 1 2 1 M W - 4 9 M v a r 65 MW -39 Mvar 287 MW -58 Mvar 163 MW -66 Mvar 152 MW -45 Mvar 161 MW -42 Mvar 162 MW -45 Mvar 5 0 M W 9 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.2 Mvar 1.03 puONTARIO 74 MW -15 Mvar 38 MW -17 Mvar 117 MW -22 Mvar 2 2 8 M W - 1 9 M v a r 202 MW -16 Mvar 122 MW 3 Mvar 12 MW 13 Mvar 12 MW 13 Mvar 13 MW 13 Mvar 10 MW 24 Mvar 54 MW 5 Mvar 69 MW 7 Mvar 1 2 8 M W 7 1 M v a r 1 2 8 M W 6 7 M v a r 621 MW -157 Mvar 1250 MW -322 Mvar 614 MW -80 Mvar 418 MW -76 Mvar 299 MW 40 Mvar 277 MW -9 Mvar 247 MW 42 Mvar 231 MW -19 Mvar 227 MW -18 Mvar 349 MW 2 Mvar 357 MW 1 Mvar 587 MW -48 Mvar 3 5 M W 2 4 M v a r 886 MW -74 Mvar 2 5 1 M W - 3 7 M v a r 2 3 7 M W - 1 8 M v a r 9 1 3 M W - 2 0 9 M v a r 914 MW -282 Mvar ID-NW = 3400 MW Grassland = 1262 MWSummer Lake = 1369 MW Lolo = 228 MW Walla Walla = 304 MW LaGrande = 196 MW Midpoint West = 3279 MW Borah West = 3514 MW Idaho-Sierra = 223 MW N of John Day = -152 MW COI = 1347 MW PDCI = 1100 MW ID-MT = 254 MW W of McNary = 1968 MW W of Slatt = 2965 MW Alturas Project = -122 MW Path C = 698 MW Montana Southeast = -599 MW TOT 2B1 = 561 MW TOT 2C = 578 MW 1345 MW -175 Mvar 15 MW -46 Mvar 207 MW -79 Mvar 93 MW -3 Mvar 257 M W 139 M v a r 3 3 8 M W - 2 7 4 M v a r 1 2 6 2 M W - 3 0 9 M v a r 1312 MW 52 Mvar Page 129 of 776 5.7.1 Background & Need for Simultaneous Interaction Studies The PG&E-Sierra transmission path (Path 24) is made up of two 115 kV transmission lines and a 60 kV transmission line connecting western Nevada to northeast California. The majority of the power flowing through the PG&E-Sierra path begins at California Substation, and flows through the Cal Sub 120 kV phase shifter. In the 16la1sa_3400idnw_N base case, the flow through the Cal Sub 120 kV phase shifter is 147 MW, and the flow through the PG&E-Sierra path is 149 MW. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the PG&E-Sierra path increases to 171 MW, a 15% increase on the path. Due to this sizable increase in path transfers, the PG&E-Sierra path may have a simultaneous interaction with the Idaho-Northwest path. In order to stress the PG&E-Sierra path to ~150 MW, the Cal Sub 120 kV phase shifter has to be loaded to its nominal rating, pre-contingency. Of the 329 studied contingencies, 98 resulted in overloading the Cal Sub 120 kV phase shifter beyond its nominal rating, of which none of those resulted in overloads beyond the emergency rating. 5.7.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is: 16la1sa_3400idnw_Path24. Step-by-step development of the 16la1sa_3400idnw_Path24 base case: Step 1: Begin with the 16la1sa_3400idnw_N base case Utilize the base case developed in Section 5.1.1 Steady State Case Stressing. Step 2: Stress the PG&E-Sierra (Path 24) to 150 MW east-to-west Utilize the Cal Sub 120 kV phase shifting transformer. 5.7.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_Path24 case can be found in Appendix J. Details for the severe/notable contingencies can be found below. Page 130 of 776 Most Severe Post-Transient Contingency – N-1: Hilltop 345/230 Xfmr The pre-contingency flow through the Hilltop 345/230 kV transformer is ~123 MW. This contingency results in overloading the Cal Sub 120 kV phase shifter to 119.2% of its nominal rating (99.3% of emergency). Since the overload is less than the Cal Sub 120 kV phase shifting transformers emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 106: Post-transient results – N-1: Hilltop 345/230 kV Transformer Most Severe Idaho-Northwest Contingency – BF 4957 Summer L-Malin & Summer L-Hemingway 500kV This contingency results in overloading the Cal Sub 120 kV phase shifter to 116% of its nominal rating (97% of emergency). Since the overload is less than the Cal Sub 120 kV phase shifting transformers emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 107: Post-transient results – BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV Other Notable Contingencies related to PG&E-Sierra N-1: Robinson-Harry Allen 500 kV – This contingency results in overloading the Cal Sub 120 kV phase shifter to 119.0% of its nominal rating (99.2% of emergency). N-2: Round Mtn-Table Mtn #1 & #2 500 kV – This contingency results in overloading the Cal Sub 120 kV phase shifter to 118.5% of its nominal rating (98.8% of emergency). Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with PG&E-Sierra at 150 MW east-to-west. Page 131 of 776 5.7.4 Voltage Stability The Idaho-Northwest v PG&E-Sierra study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. For the Idaho-Northwest v PG&E-Sierra study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the PG&E-Sierra path at its 150 MW east-to-west rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_Path24 base case can be found in Appendix J. Busses studied utilizing VQ Analysis are: Bordertown 345 kV, Cal Sub 120 kV, Hemingway 500 kV, Hilltop 230 kV, Humboldt 345 kV, Midpoint 500 kV, Populus 500 kV, and Valley Road 345 kV. The tables below highlight a sample of the reactive margins at Bordertown, Cal Sub and Valley Road. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 108: Bordertown 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: HILL TOP 345/230 XFMR 0.70 -777 Worst VQ contingency N-1: MALIN-HILLTOP 230 KV 0.70 -785 Second Worst VQ contingency BF PGE GRASSLAND-CEDAR SPRING & HEM-GRASSLAND 500 0.70 -825 Worst VQ contingency related to ID-NW Table 109: Cal Sub 120 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: CAL SUB 120 KV PHASE SHIFTER 0.70 -463 Worst VQ contingency BF PGE GRASSLAND-CEDAR SPRING & HEM-GRASSLAND 500 0.70 -535 Worst VQ contingency related to ID-NW Table 110: Valley Road 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: HILL TOP 345/230 XFMR 0.70 -887 Worst VQ contingency BF IPC POP-CHILL-HEM 500 KV & HEM 500/230 XFMR+RAS 0.72 -911 Worst VQ related to Idaho Power BF PGE GRASSLAND-CEDAR SPRING & HEM-GRASSLAND 0.72 -912 Worst VQ contingency related to ID-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 Page 132 of 776 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the PG&E-Sierra path at the flow levels studied. 5.7.5 Transient Stability A separate transient stability study for the 16la1sa_3400idnw_Path24 case was not completed due to the similarities between the 16la1sa_3400idnw_N case and the 16la1sa_3400idnw_Path24 base case. A separate transient stability study would yield equivalent results. Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. 5.7.6 Remedial Action Schemes For the 16la1sa_3400idnw_Path76 base case, each contingency, and the associated switching (RAS), is documented in Appendix J. Details for the severe/notable contingencies can be found below. Most Severe Post-Transient Contingency – N-1: Hilltop 345/230 Xfmr This contingency does not have any associated RAS. Most Severe Idaho-Northwest Contingency – BF 4957 Summer L-Malin & Summer L-Hemingway 500kV This contingency does not have any associated RAS. Notable Contingency - N-1: Robinson-Harry Allen 500 kV This contingency does not have any associated RAS. Notable Contingency - N-2: Round Mtn-Table Mtn #1 & #2 500 kV This contingency does not have any associated RAS. Page 133 of 776 5.8 Simultaneous Interaction Study: TOT 2B1, N-S (Path 78) Figure 28: Idaho-Northwest (Path 14) 3400 MW, East to West v. TOT 2B1, North to South, Base Case 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 134 of 776 Background & Need for Simultaneous Interaction Studies The TOT 2B1 transmission path (Path 78) is made up of a single 345 kV transmission line connecting Pinto substation in southeast Utah to Four Corners substation in northwest New Mexico. In the base case, the flow through TOT 2B1 is 561 MW. Following the N-1 loss of the Hemingway-Boardman 500 kV, the loading on the TOT 2B1 path increases to 611 MW, a 9% increase on the path. 5.8.1 Steady State Case Stressing The study of Idaho-Northwest v TOT 2B1 utilized the 16la1sa_3400idnw_N base case. The 16la1sa_3400idnw_N base case is described in Section 5.1.1. 5.8.2 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – N-2: Double Palo Verde This contingency results in overloading the Pinto 345 kV phase shifters to 116% of their nominal rating (93% of emergency). Since the overloads are less than the phase shifters emergency ratings, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table 111: Post-transient results – N-2: Double Palo Verde Severe Post-Transient Contingency #2 – N-1: Red Butte-Harry Allen 345 kV This contingency results in overloading the Pinto 345 kV phase shifters to 111% of their nominal ratings (89% of emergency). Since the overload is less than the Pinto 345 kV phase shifters emergency ratings, this contingency results in acceptable performance. Most Severe Idaho-Northwest Contingency – Bus: Summer Lake 500 kV This contingency results in overloading the Pinto 345 kV phase shifters to 102% of their nominal ratings (82% of emergency). Notable Contingency - BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS This contingency results in overloading the Pinto 345 kV phase shifters to 105% of their nominal ratings (84% of emergency). Page 135 of 776 Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with TOT 2B1 at 560 MW north-to-south. 5.8.3 Voltage Stability The Idaho-Northwest v TOT 2B1 study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v TOT 2B1 study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the TOT 2B1 path at its 560 MW north-to-south rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_N base case can be found in Appendix B. Busses studied utilizing VQ Analysis are: Harry Allen 345 kV, Hemingway 500 kV, Midpoint 500 kV, Mill Creek 230 kV, Pinto 345 kV, Populus 500 kV, Taft 500 kV and Yellowtail 230 kV. The table below highlights a sample of the reactive margins at Pinto. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 112: Pinto 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-2: DOUBLE PALO VERDE 0.70 -575 Worst VQ contingency BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.70 -635 Worst VQ related to Idaho Power BUS: SUMMER LAKE 500 KV 0.70 -658 Worst VQ related to Idaho-NW Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the TOT 2B1 path at the flow levels studied. Page 136 of 776 5.8.4 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. A write up of these results can be found in Section 5.1.4. 5.8.5 Remedial Action Schemes For the 16la1sa_3400idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix B. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – N-2: Double Palo Verde This contingency opens two Palo Verde generators operating at approximately 1400 MW each. After this generation loss, switched VAr devices modeled at Durango 115 kV, Pinto 138 kV, and York Canyon 115 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 113: Shunt Capacitor Switching in N-2: Double Palo Verde In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #2 – N-1: Red Butte-Harry Allen 345 kV This contingency opens the Red Butte-Harry Allen 345 kV transmission line. After the loss of this line, a discrete switched VAr device modeled at Red Butte 345 kV would switch out due to high voltages on the bus that the device is controlling. Most Severe Idaho-Northwest Contingency – Bus: Summer Lake 500 kV This contingency does not have any associated RAS. For the existing Idaho-Northwest system, rated at 2400 MW east-to-west, this contingency would have required the tripping of ~1000 MW at Jim Bridger Power Plant. Notable Contingency - BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS This contingency opens the Populus-Cedar Hill-Hemingway 500 kV line, and the Hemingway 500/230 kV transformer. To prevent exceeding the emergency rating of the Midpoint 500 kV series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. After the loss of this line and transformer, switched VAr devices modeled at Amps 69 kV, Midpoint 500 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The Page 137 of 776 table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 114: Shunt Capacitor Switching in BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Page 138 of 776 5.9 Simultaneous Interaction Study: TOT 2C, N-S (Path 35) Figure 29: Idaho-Northwest (Path 14) 3400 MW, East to West v. TOT 2C (Path 35), North to South, Base Case 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 139 of 776 5.9.1 Background & Need for Simultaneous Interaction Studies TOT 2C (Path 35) is made up of one 345 kV transmission line connecting Red Butte substation in southwest Utah to Harry Allen 345 kV substation in the Las Vegas area. In the base case, the flow through TOT 2C is 600 MW. Following the N-1 loss of the Hemingway-Boardman 500 kV line, the loading on the TOT 2C path increases to 671 MW, a 12% increase on the path. Due to this sizable increase in path transfers, the TOT 2C path may have a simultaneous interaction with the Idaho-Northwest path. 5.9.2 Steady State Case Stressing The study of Idaho-Northwest v TOT 2C utilized the 16la1sa_3400idnw_N base case. The 16la1sa_3400idnw_N base case is described in Section 5.1.1. 5.9.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – N-2: Double Palo Verde This contingency results in overloading the Harry Allen 345 kV phase shifters to 123% of their nominal rating (99.7% of emergency). Refer to the table below for more information about the overloads caused by this contingency. Table 115: Post-transient results – N-2: Double Palo Verde Severe Post-Transient Contingency #2 – N-1: Harry Allen 345/230 kV Xfmr This contingency results in overloading the remaining Harry Allen 345/230 kV transformer to 155% of its nominal rating (133% of emergency). Due to this overload, this contingency would ultimately result in back-tripping the Redbutte-Harry Allen 345 kV line. After including the loss of the Redbutte-Harry Allen 345 kV line, this contingency results in overloading the Pinto 345 kV phase shifters to 111% of their nominal ratings (89% of emergency). Since the overload is less than the Pinto 345 kV phase shifters emergency ratings, this contingency results in acceptable performance. Severe Post-Transient Contingency #3 – N-1: Pinto-Four Corners 345 kV This contingency results in overloading the remaining Harry Allen 345 phase shifters to 119% of their nominal rating (97% of emergency). Since the overload is less than the Harry Allen 345 kV phase shifters emergency ratings, this contingency results in acceptable performance. Page 140 of 776 Most Severe Idaho Power Contingency: BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS This contingency results in overloading the Harry Allen 345 kV phase shifters to 116% of their nominal rating (94% of emergency). Most Severe Idaho-Northwest Contingency: Bus: Summer Lake 500 kV This contingency results in overloading the Harry Allen 345 kV phase shifters to 112% of their nominal rating (91% of emergency). Conclusions No violations of the NERC/WECC standards and local reliability criteria were observed. The Idaho- Northwest path can achieve a 3400 MW east-to-west rating simultaneous with TOT 2C at 600 MW north-to-south. 5.9.4 Voltage Stability The Idaho-Northwest v TOT 2C study utilizes two methods to verify voltage stability: (1) Real Power Margin Assessment (PV Analysis) and (2) Reactive Power Margin Assessment (VQ Analysis). PV Analysis requires N-1, N-2, and breaker failure contingencies to have a post-transient solution with the path under study stressed to at least 105%, 102.5% and 102.5%, respectively, of the proposed rating. In the Idaho-Northwest v TOT 2C study, all contingencies have a post-transient solution with Idaho-Northwest stressed to 3570 MW, 105% of the proposed 3400 MW rating. This PV Analysis verifies that sufficient real power margin exists to operate the Idaho-Northwest path at its proposed 3400 MW rating, simultaneous with the TOT 2C path at its 600 MW north-to-south rating. VQ Analysis determines the reactive power margin, in MVAr, following a contingency at a specific electrical bus. In this study, reactive margin is represented by a negative number. The larger the negative number, the more reactive margin (-500 MVAr is a superior reactive margin than -100 MVAr). VQ results for the 16la1sa_3400idnw_N base case can be found in Appendix B. Busses studied utilizing VQ Analysis are: Harry Allen 345 kV, Hemingway 500 kV, Midpoint 500 kV, Mill Creek 230 kV, Pinto 345 kV, Populus 500 kV, Taft 500 kV and Yellowtail 230 kV. The table below highlights a sample of the reactive margins at Harry Allen. The study results indicate that all studied busses have sufficient reactive margin for all studied contingencies. Table 116: Harry Allen 345 kV bus reactive margin results (sample) Contingency Name Voltage @ Qmin Margin (MVAr) Comments N-1: HATWAI 500/230 KV XFMR 0.70 -805 Worst VQ contingency BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR +RAS 0.70 -1039 Worst VQ related to Idaho Power BUS: SUMMER LAKE 500 KV 0.70 -1066 Worst VQ related to Idaho-NW Page 141 of 776 Idaho Power has special reactive margin criteria for Idaho Power busses. For N-1 outages, Idaho Power’s reactive margin requirement is 250 MVAr for critical 230 kV and 345 kV busses and 500 MVAr for critical 500 kV busses. For N-2 outages, the requirement is 200 MVAr for 230 kV and 345 kV busses and 400 MVAr for 500 kV busses. The study results indicate that Idaho Power busses have sufficient reactive margin for all studied contingencies. Given the explanation in this section, there is not a voltage stability type interaction between the Idaho- Northwest path and the TOT 2C path at the flow levels studied. 5.9.5 Transient Stability Transient stability contingency results for the 16la1sa_3400idnw_N case can be found in Appendix B. A write up of these results can be found in Section 5.1.4. 5.9.6 Remedial Action Schemes For the 16la1sa_3400idnw_N base case, each contingency, and the associated switching (RAS), is documented in Appendix B. Details for the severe/notable contingencies can be found below. Most Severe Post-Transient Contingency – N-2: Double Palo Verde This contingency opens two Palo Verde generators operating at approximately 1400 MW each. After this generation loss, switched VAr devices modeled at Durango 115 kV, Pinto 138 kV, and York Canyon 115 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this contingency. Table 117: Shunt Capacitor Switching in N-2: Double Palo Verde In reality, additional capacitors may switch that are not modeled as part of this contingency. Severe Post-Transient Contingency #2 – N-1: Harry Allen 345/230 kV Xfmr If loss of a single Harry Allen 345/230 kV transformer results in severe overloads on the remaining Harry Allen 345/230 kV transformer, as it does in this study, the Redbutte-Harry Allen 345 kV line is tripped to relieve this overload. Severe Post-Transient Contingency #3 – N-1: Pinto-Four Corners 345 kV This contingency does not have any associated RAS. Page 142 of 776 Most Severe Idaho-Power Contingency – BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS This contingency opens the Populus-Cedar Hill-Hemingway 500 kV line, and the Hemingway 500/230 kV transformer. To prevent exceeding the emergency rating of the Midpoint 500 kV series capacitor, RAS action to bypass half of the Midpoint 500 kV series capacitor is required. Post-contingency, switched VAr devices modeled at Amps 69 kV, Midpoint 500 kV, and Peterson 230 kV would switch in-service due to depressed voltages on the busses that the devices are controlling. The table below illustrates the amount and location of VArs switched in-service in this post-transient contingency run. Table 118: Shunt Capacitor Switching in BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS In reality, additional capacitors may switch that are not modeled as part of this contingency. Most Severe Idaho-Northwest Contingency – Bus: Summer Lake 500 kV This contingency does not have any associated RAS. Page 143 of 776 6. Conclusion The objective of this Phase II Rating Study was to evaluate the addition of the proposed Hemingway – Boardman 500 kV transmission project into the existing WECC transmission system. The Hemingway – Boardman 500 kV transmission project will be treated as an addition to the Idaho – Northwest (Path 14) WECC rated path. Idaho Power is requesting an increase to the Idaho – Northwest Path 14 WECC Accepted Rating upon completion of the Hemingway-Boardman 500 kV transmission project. Below are the proposed ratings in the west-to-east direction and the east-to-west direction: Table 119: Proposed ratings for Idaho-Northwest (Path 14) and Hemingway-Boardman 500 kV Simultaneous Interaction Studies Summary In order to prove the proposed ratings are acceptable, this report studied Idaho-Northwest at its proposed ratings simultaneous with other relevant similarly situated Phase 2 projects, Phase 3 projects, and existing WECC rated paths at their proposed ratings. The following simultaneous interaction studies have been completed: Table 120: Simultaneous Interaction Studies Completed Page 144 of 776 The Plan of Service in Section 2.4 of this report lists the system additions corresponding with the Hemingway-Boardman 500 kV Project. All simultaneous interaction studies included the system additions described in Section 2.4. For all simultaneous interaction studies, Idaho Power completed Post-Transient, Voltage Stability, and Transient Stability studies. Simultaneous Interaction Studies Summary – Post-Transient Contingency Results Three breaker failure contingencies limited the transfer capability in this report: 1) Breaker Failure: Hemingway-Grassland 500 kV Line & Hemingway 500/230 kV transformer 2) Breaker Failure: Midpoint-Hemingway 500 kV Line & Hemingway 500/230 kV transformer 3) Breaker Failure: Hemingway-Grassland & Grassland-Cedar Spring 500 kV Lines Each of these breaker failure contingencies are avoidable by setting up the Hemingway and Grassland 500 kV busses in different manners, however, the N-1 loss of Hemingway-Grassland 500 kV is almost as severe as each of these breaker failure contingencies. These contingencies result in thermal loading approaching the emergency rating on the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines, and post-transient voltage deviation issues at Peterson 230 kV and Amps 230 kV substations. A new shunt capacitor on the Peterson 230 kV bus, switchable based on a voltage set point, is required to arrest the post-transient voltage deviations issues associated with these critical contingencies. Given proper remediation, all contingencies in the simultaneous interaction studies resulted in acceptable post-transient performance. Post-transient performance indicates that the Idaho-Northwest path is capable of a 2250 MW west-to-east rating and a 3400 MW east-to-west rating simultaneous with all other studied paths. Simultaneous Interaction Studies Summary – Voltage Stability Results All contingencies resulted in adequate Real Power Margin (PV) and Reactive Power Margin (QV) in each of the simultaneous interaction studies. PV/QV analysis indicates that the Idaho-Northwest path is capable of a 2250 MW west-to-east rating and a 3400 MW east-to-west rating simultaneous with all other studied paths. Simultaneous Interaction Studies Summary – Transient Stability Results All studied contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. Transient stability analysis indicates that the Idaho-Northwest path is capable of a 2250 MW west-to-east rating and a 3400 MW east-to-west rating simultaneous with all other studied paths. Sensitivity Studies Summary In addition to simultaneous interaction studies, several sensitivity studies were completed. These sensitivity studies are listed below: Page 145 of 776 Table 121: Sensitivity Studies Completed in Phase II Sensitivity Studies Summary – Post-Transient Contingency Results The Hemingway-Boardman Stand Alone sensitivity case offered one particular contingency that must be avoided if the Hemingway-Boardman 500 kV line is completed prior to the Populus-Cedar Hill- Hemingway 500 kV line: 1) Breaker Failure: Midpoint-Hemingway 500 kV Line & Hemingway 500/230 kV transformer If this contingency were to occur, Hemingway-Boardman 500 kV and Hemingway-Summer Lake 500 kV would be disconnected from the Idaho-Power transmission system, and the remaining lower voltage 230 kV system connecting Idaho Power to the Northwest would not be able to support the increased transfers. Hemingway substation will be configured in such a way as to prevent the possibility of this contingency prior to the addition of the Populus-Cedar Hill-Hemingway 500 kV Gateway West transmission line. Other than the aforementioned contingency, given proper remediation, all contingencies in the sensitivity studies resulted in acceptable post-transient performance. Post-transient performance results indicate that the Idaho-Northwest path is capable of a 2250 MW west-to-east rating and a 3400 MW east-to-west rating regardless of the system configuration or northwestern terminus. Sensitivity Studies Summary – Voltage Stability Results All contingencies resulted in adequate Real Power Margin (PV) and Reactive Power Margin (QV) in each of the simultaneous interaction studies. PV/QV analysis indicates that the Idaho-Northwest path is capable of a 2250 MW west-to-east rating and a 3400 MW east-to-west rating regardless of the system configuration or northwestern terminus. Sensitivity Studies Summary – Transient Stability Results All studied contingencies resulted in stable and damped performance with no violations to the WECC Performance Criteria. Transient stability analysis indicates that the Idaho-Northwest path is capable of a 2250 MW west-to-east rating and a 3400 MW east-to-west rating regardless of the system configuration or northwestern terminus. Page 146 of 776 Appendix A 16hs2a_2250idnw_N Base Case (Idaho-Northwest West-to-East) Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A1: 16hs2sa_2250idnw_N Base Case Pre-Contingency 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 226.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 8 M W - 1 3 4 M v a r 1 4 9 5 M W - 1 6 7 M v a r 1 7 2 7 M W - 2 2 8 M v a r 1610 MW -176 Mvar 295 MW 60 Mvar 258 MW 57 Mvar 283 MW 39 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.1 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.04 puKINPORT 187.5 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 2 M W - 4 4 M v a r 1 7 3 2 M W - 1 0 5 M v a r 1769 MW -83 Mvar 1774 MW -86 Mvar 428 MW -34 Mvar 871 MW 10 Mvar 1533 MW -121 Mvar 1057 MW -80 Mvar 875 MW -101 Mvar 169 MW -38 Mvar 941 MW -157 Mvar 1302 MW 63 Mvar 185 MW 183 Mvar 5 0 1 M W 9 M v a r 185 MW 113 Mvar 410 MW -21 Mvar 868 MW 94 Mvar 163 MW 11 Mvar 155 MW 7 Mvar 755 MW 52 Mvar 1.05 puANTICLIN 368 MW -11 Mvar 368 MW -12 Mvar 14 MW 107 Mvar 13 MW 92 Mvar 315 MW -19 Mvar 410 MW -21 Mvar 183 MW 23 Mvar 251 MW 64 Mvar 578 MW -84 Mvar 160 MW -58 Mvar 6 MW -48 Mvar 8 MW 52 Mvar 574 MW 139 Mvar 549 MW 25 Mvar 424 MW -266 Mvar 1045 MW -117 Mvar 200 MW -37 Mvar 128 MW -24 Mvar 157 MW -23 Mvar 147 MW -22 Mvar 44 MW -0 Mvar 2 5 7 M W 9 M v a r 25 MW 24 Mvar 158 MW -52 Mvar 38 MW -55 Mvar 15 MW -29 Mvar 31 MW -26 Mvar 30 MW -29 Mvar 4 5 9 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 44 MW -0 Mvar 38 MW 8 Mvar 336 MW 41 Mvar 3 0 7 M W - 4 7 M v a r 62 MW -2 Mvar 381 MW -56 Mvar 298 MW -17 Mvar 298 MW -17 Mvar 307 MW -22 Mvar 310 MW -41 Mvar 196 MW -52 Mvar 253 MW -64 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1053 MW -119 Mvar 896 MW 65 Mvar 73 MW 26 Mvar 485 MW -65 Mvar 545 MW -8 Mvar 506 MW -45 Mvar 453 MW 19 Mvar 431 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 495 MW -17 Mvar 779 MW -115 Mvar 3 9 3 M W 1 2 0 M v a r 1157 MW -135 Mvar 1 5 0 3 M W 6 M v a r 1 4 6 9 M W 3 4 M v a r 1 3 1 8 M W 8 M v a r 1320 MW -110 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -283 MW Lolo = -307 MW Walla Walla = -141 MW LaGrande = -128 MW Midpoint West = -1663 MW Borah West = -342 MW Idaho-Sierra = 501 MWN of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4295 MW W of Slatt = 4817 MWAlturas Project = 151 MW Path C = -1600 MWMontana Southeast = 600 MW TOT 2B1 = 64 MW TOT 2C = 189 MW 284 MW -102 Mvar 146 MW 61 Mvar 1002 MW -10 Mvar 1151 MW 6 Mvar 25 M W 76 M v a r 9 8 0 M W - 1 2 8 M v a r 1 4 0 7 M W 1 7 7 M v a r 1350 MW -335 Mvar Page 148 of 776 Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A2: 16hs2sa_2250idnw_N Base Case after the contingency BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 223.1 Mvar 1.05 puPONDROSA 0.0 Mvar 1 7 8 6 M W - 1 1 5 M v a r 1 6 6 0 M W - 1 4 7 M v a r 2 2 2 9 M W - 2 3 6 M v a r 2142 MW -230 Mvar 417 MW 54 Mvar 365 MW 54 Mvar 1052 MW -274 Mvar 0.99 puHEMINWAY 1.07 pu JOHN DAY 434.5 Mvar 1.06 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.3 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD441.7 Mvar 1.07 puCDR SPRG 1.06 puBUCKLEY 0.99 puLAGRANDE 51.5 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 153.9 Mvar 115.4 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.6 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.4 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.00 puIDAHO-NV 1.03 puKINPORT 186.1 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 9 0 M W 3 9 M v a r 2 0 5 7 M W 6 4 M v a r 2050 MW 77 Mvar 2056 MW 74 Mvar 449 MW -60 Mvar 1025 MW 68 Mvar 1055 MW -108 Mvar 579 MW -91 Mvar 977 MW -27 Mvar 606 MW 112 Mvar 565 MW -111 Mvar 984 MW 39 Mvar 68 MW 174 Mvar 4 3 7 M W - 6 M v a r 68 MW 106 Mvar 297 MW -16 Mvar 673 MW 87 Mvar 132 MW 12 Mvar 122 MW 8 Mvar 705 MW 37 Mvar 1.05 puANTICLIN 385 MW -6 Mvar 384 MW -8 Mvar 74 MW 108 Mvar 65 MW 91 Mvar 333 MW -7 Mvar 297 MW -16 Mvar 160 MW 36 Mvar 261 MW 70 Mvar 584 MW -84 Mvar 126 MW -56 Mvar 23 MW 45 Mvar 39 MW 49 Mvar 642 MW 148 Mvar 616 MW 19 Mvar 266 MW -254 Mvar 1161 MW -93 Mvar 275 MW -19 Mvar 198 MW -37 Mvar 226 MW -47 Mvar 151 MW -25 Mvar 49 MW 0 Mvar 3 3 6 M W 5 5 M v a r 93 MW 34 Mvar 259 MW -48 Mvar 4 MW -56 Mvar 18 MW 32 Mvar 2 MW 28 Mvar 4 MW 32 Mvar 5 5 3 M W 1 9 M v a r HORSEFLT 0.98 puBOISEBCH 90.3 Mvar 0.0 Mvar 0.99 puONTARIO 49 MW 0 Mvar 54 MW 19 Mvar 395 MW 71 Mvar 3 8 2 M W - 6 1 M v a r 122 MW -42 Mvar 424 MW -77 Mvar 340 MW -14 Mvar 340 MW -14 Mvar 351 MW -20 Mvar 354 MW -48 Mvar 225 MW -63 Mvar 290 MW -78 Mvar 1 3 M W 4 4 M v a r 1 3 M W 4 3 M v a r 1171 MW -48 Mvar 805 MW 74 Mvar 77 MW 32 Mvar 453 MW -52 Mvar 501 MW -2 Mvar 466 MW -40 Mvar 415 MW 24 Mvar 388 MW 2 Mvar 382 MW 3 Mvar 423 MW -17 Mvar 432 MW -18 Mvar 655 MW -129 Mvar 4 7 0 M W 1 6 8 M v a r 1565 MW -145 Mvar 1 6 5 0 M W - 3 M v a r 1 6 2 5 M W 3 1 M v a r 1 0 5 1 M W - 9 3 M v a r 1052 MW -180 Mvar ID-NW = -1862 MW Grassland = 0 MW Summer Lake = -1052 MW Lolo = -382 MWWalla Walla = -236 MW LaGrande = -198 MW Midpoint West = -1409 MW Borah West = -156 MW Idaho-Sierra = 437 MW N of John Day = 7632 MW COI = 4828 MW PDCI = 3101 MW ID-MT = -369 MW W of McNary = 4049 MW W of Slatt = 5826 MW Alturas Project = 175 MW Path C = -1430 MW Montana Southeast = 683 MW TOT 2B1 = 14 MW TOT 2C = 137 MW 1068 MW -116 Mvar 0 MW 0 Mvar 902 MW 20 Mvar 1059 MW 21 Mvar 26 M W 82 M v a r 1 0 0 0 M W - 8 5 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 149 of 776 Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A3: 16hs2sa_2250idnw_N Base Case after the contingency BF IPC Hemingway-Midpoint 500 kV & Hemingway 500/230 Xfmr 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 234.1 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 3 6 M W - 1 0 6 M v a r 1 5 2 7 M W - 1 3 9 M v a r 1 6 0 3 M W - 2 1 8 M v a r 1465 MW -162 Mvar 269 MW 66 Mvar 235 MW 62 Mvar 95 MW -21 Mvar 0.98 puHEMINWAY 1.09 pu JOHN DAY 448.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 176.6 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD447.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 0.99 puLAGRANDE 51.4 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.01 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 153.0 Mvar 114.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.00 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-86.1 Mvar 1.06 puBORAH 1.01 puMIDPOINT 0.0 Mvar 177.0 Mvar 1.07 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 182.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.1 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 8 5 M W - 3 0 M v a r 1 7 4 2 M W - 8 6 M v a r 1742 MW -74 Mvar 1746 MW -76 Mvar 445 MW -31 Mvar 895 MW 24 Mvar 1412 MW -167 Mvar 936 MW -117 Mvar 859 MW -101 Mvar 50 MW -86 Mvar 804 MW -189 Mvar 0 MW 0 Mvar 1000 MW 89 Mvar 3 7 6 M W - 2 3 M v a r 1000 MW -47 Mvar 165 MW 10 Mvar 165 MW 37 Mvar 45 MW -30 Mvar 59 MW -28 Mvar 1476 MW 64 Mvar 1.04 puANTICLIN 413 MW 9 Mvar 413 MW 8 Mvar 417 MW 49 Mvar 357 MW 37 Mvar 528 MW -62 Mvar 165 MW 10 Mvar 136 MW 22 Mvar 296 MW 65 Mvar 629 MW -115 Mvar 19 MW 62 Mvar 193 MW 21 Mvar 222 MW 24 Mvar 480 MW 186 Mvar 569 MW 52 Mvar 299 MW -304 Mvar 1020 MW -111 Mvar 280 MW -15 Mvar 203 MW -35 Mvar 231 MW -46 Mvar 154 MW -26 Mvar 52 MW -0 Mvar 3 4 1 M W 6 0 M v a r 93 MW 39 Mvar 267 MW -45 Mvar 4 MW -60 Mvar 19 MW 35 Mvar 3 MW 31 Mvar 4 MW 36 Mvar 5 6 0 M W 2 4 M v a r HORSEFLT 0.98 puBOISEBCH 89.4 Mvar 0.0 Mvar 0.99 puONTARIO 52 MW -0 Mvar 55 MW 21 Mvar 402 MW 76 Mvar 3 9 0 M W - 6 0 M v a r 130 MW -42 Mvar 426 MW -78 Mvar 344 MW -11 Mvar 344 MW -11 Mvar 355 MW -17 Mvar 359 MW -46 Mvar 227 MW -63 Mvar 294 MW -78 Mvar 4 4 M W - 4 9 M v a r 4 4 M W - 4 9 M v a r 1027 MW -122 Mvar 879 MW 60 Mvar 47 MW 21 Mvar 438 MW -77 Mvar 507 MW -17 Mvar 471 MW -55 Mvar 420 MW 11 Mvar 394 MW -9 Mvar 387 MW -9 Mvar 431 MW -32 Mvar 441 MW -33 Mvar 673 MW -154 Mvar 4 7 7 M W 1 7 9 M v a r 1197 MW -114 Mvar 1 5 4 1 M W 3 5 M v a r 1 4 9 9 M W 6 2 M v a r 1 5 5 3 M W 1 0 6 M v a r 1556 MW -48 Mvar ID-NW = -1883 MW Grassland = -1142 MW Summer Lake = 95 MW Lolo = -390 MW Walla Walla = -245 MW LaGrande = -203 MW Midpoint West = -456 MW Borah West = 735 MW Idaho-Sierra = 376 MWN of John Day = 7634 MW COI = 4916 MW PDCI = 3101 MW ID-MT = -362 MW W of McNary = 4110 MW W of Slatt = 4866 MWAlturas Project = 193 MW Path C = -1394 MWMontana Southeast = 649 MW TOT 2B1 = 5 MW TOT 2C = 128 MW 95 MW 141 Mvar 0 MW 0 Mvar 964 MW -11 Mvar 1120 MW 1 Mvar 89 M W -94 M v a r 9 7 0 M W - 1 3 1 M v a r 1 1 4 2 M W - 3 6 M v a r 1106 MW -140 Mvar Page 150 of 776 Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A4: 16hs2sa_2250idnw_N Base Case after the contingency BF PGE Grassland-Cedar Springs 500 kV & Grassland-Hemingway 500 kV 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puPONDROSB 1.04 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 219.3 Mvar 1.04 puPONDROSA 0.0 Mvar 1 8 2 1 M W - 1 2 5 M v a r 1 6 8 5 M W - 1 5 4 M v a r 2 2 5 4 M W - 2 4 9 M v a r 2155 MW -244 Mvar 389 MW 59 Mvar 340 MW 58 Mvar 1035 MW -269 Mvar 1.01 puHEMINWAY 1.06 pu JOHN DAY 428.2 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 171.5 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD438.7 Mvar 1.05 puCDR SPRG 1.05 puBUCKLEY 1.00 puLAGRANDE 51.8 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 154.6 Mvar 116.0 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-86.6 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 179.6 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.00 puIDAHO-NV 1.03 puKINPORT 185.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.7 Mvar 0.0 Mvar 0.0 Mvar 1.06 puMARION 0.0 Mvar 1 6 6 1 M W 3 2 M v a r 2 3 1 5 M W 1 6 3 M v a r 2098 MW 104 Mvar 2103 MW 102 Mvar 631 MW -68 Mvar 0 MW 0 Mvar 673 MW -120 Mvar 197 MW -113 Mvar 1072 MW 20 Mvar 1248 MW 164 Mvar 278 MW -92 Mvar 956 MW -16 Mvar 66 MW 154 Mvar 4 3 8 M W - 9 M v a r 66 MW 87 Mvar 292 MW -34 Mvar 650 MW 50 Mvar 133 MW 7 Mvar 123 MW 3 Mvar 704 MW 29 Mvar 1.05 puANTICLIN 385 MW -2 Mvar 385 MW -4 Mvar 74 MW 115 Mvar 65 MW 97 Mvar 332 MW -8 Mvar 292 MW -34 Mvar 159 MW 32 Mvar 261 MW 72 Mvar 585 MW -83 Mvar 125 MW -62 Mvar 22 MW 49 Mvar 38 MW 53 Mvar 643 MW 160 Mvar 619 MW 25 Mvar 174 MW -241 Mvar 1268 MW -93 Mvar 284 MW -24 Mvar 206 MW -46 Mvar 234 MW -56 Mvar 150 MW -25 Mvar 48 MW 1 Mvar 3 4 5 M W 5 3 M v a r 103 MW 32 Mvar 265 MW -49 Mvar 1 MW 55 Mvar 24 MW 30 Mvar 8 MW 27 Mvar 9 MW 31 Mvar 5 5 9 M W 1 6 M v a r HORSEFLT 0.99 puBOISEBCH 91.2 Mvar 0.0 Mvar 1.00 puONTARIO 48 MW 1 Mvar 55 MW 20 Mvar 398 MW 71 Mvar 3 8 7 M W - 6 4 M v a r 126 MW -34 Mvar 425 MW -84 Mvar 343 MW -17 Mvar 343 MW -17 Mvar 354 MW -23 Mvar 358 MW -52 Mvar 227 MW -67 Mvar 293 MW -83 Mvar 1 2 M W 4 6 M v a r 1 2 M W 4 5 M v a r 1279 MW -2 Mvar 721 MW 86 Mvar 115 MW 39 Mvar 477 MW -36 Mvar 494 MW 5 Mvar 458 MW -33 Mvar 408 MW 29 Mvar 381 MW 8 Mvar 374 MW 8 Mvar 412 MW -10 Mvar 421 MW -11 Mvar 633 MW -119 Mvar 4 7 6 M W 1 6 8 M v a r 1902 MW -178 Mvar 1 6 7 6 M W - 1 7 M v a r 1 6 4 8 M W 1 8 M v a r 1 0 8 0 M W - 1 1 1 M v a r 1082 MW -203 Mvar ID-NW = -1862 MW Grassland = 0 MW Summer Lake = -1035 MW Lolo = -387 MWWalla Walla = -243 MW LaGrande = -206 MW Midpoint West = -1409 MW Borah West = -155 MW Idaho-Sierra = 438 MWN of John Day = 7598 MW COI = 4815 MW PDCI = 3101 MW ID-MT = -370 MW W of McNary = 3935 MW W of Slatt = 5508 MWAlturas Project = 174 MW Path C = -1431 MW Montana Southeast = 690 MW TOT 2B1 = 15 MW TOT 2C = 138 MW 1051 MW -113 Mvar 13 MW 71 Mvar 814 MW 39 Mvar 975 MW 28 Mvar 24 M W 87 M v a r 1 0 7 8 M W - 3 0 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 151 of 776 Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A5: 16hs2sa_2250idnw_N Base Case after the contingency N-2 John Day-Grizzly#2 500 kV & Buckley-Grizzly 500 kV 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 228.1 Mvar 1.09 puPONDROSA 0.0 Mvar 1 1 5 8 M W - 2 3 0 M v a r 1 1 0 2 M W - 2 6 8 M v a r 1 1 4 3 M W - 2 7 3 M v a r 1058 MW -195 Mvar 337 MW 31 Mvar 295 MW 32 Mvar 71 MW -118 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 446.7 Mvar 1.08 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.7 Mvar 1.08 puCOYOTE 1.09 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD455.6 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.05 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.03 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.04 puBROWNLEE 160.8 Mvar 120.6 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.09 puLOW GRAN 1.09 puCEN FERY 0.0 Mvar 1.09 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.9 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.4 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.00 puIDAHO-NV 1.04 puKINPORT 188.3 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 0 M W 0 M v a r 8 6 4 M W - 1 5 2 M v a r 0 MW 0 Mvar 3318 MW 119 Mvar 859 MW -24 Mvar 945 MW 33 Mvar 1490 MW -102 Mvar 1014 MW -52 Mvar 730 MW -118 Mvar 393 MW 10 Mvar 753 MW -141 Mvar 1150 MW 73 Mvar 106 MW 196 Mvar 4 9 1 M W 1 0 M v a r 106 MW 126 Mvar 342 MW -7 Mvar 790 MW 105 Mvar 137 MW 17 Mvar 128 MW 12 Mvar 741 MW 42 Mvar 1.05 puANTICLIN 385 MW -14 Mvar 385 MW -15 Mvar 59 MW 96 Mvar 51 MW 81 Mvar 331 MW -22 Mvar 342 MW -7 Mvar 168 MW 27 Mvar 263 MW 58 Mvar 588 MW -94 Mvar 136 MW -53 Mvar 18 MW 42 Mvar 34 MW 46 Mvar 640 MW 131 Mvar 624 MW 5 Mvar 381 MW -282 Mvar 1025 MW -87 Mvar 205 MW -36 Mvar 132 MW -24 Mvar 161 MW -23 Mvar 139 MW -19 Mvar 37 MW -0 Mvar 2 6 2 M W 1 1 M v a r 47 MW 17 Mvar 152 MW -48 Mvar 26 MW -51 Mvar 4 MW -26 Mvar 20 MW -23 Mvar 19 MW -26 Mvar 4 6 2 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 95.3 Mvar 0.0 Mvar 1.02 puONTARIO 37 MW -0 Mvar 38 MW 8 Mvar 328 MW 41 Mvar 2 9 8 M W - 4 2 M v a r 60 MW -3 Mvar 387 MW -58 Mvar 301 MW -17 Mvar 301 MW -17 Mvar 310 MW -22 Mvar 313 MW -42 Mvar 195 MW -50 Mvar 252 MW -61 Mvar 8 M W 4 1 M v a r 8 M W 4 1 M v a r 1032 MW -97 Mvar 543 MW 147 Mvar 181 MW -10 Mvar 501 MW -87 Mvar 528 MW -19 Mvar 491 MW -56 Mvar 437 MW 12 Mvar 411 MW -5 Mvar 403 MW -4 Mvar 456 MW -23 Mvar 466 MW -24 Mvar 714 MW -124 Mvar 3 9 3 M W 1 2 5 M v a r 1369 MW -82 Mvar 1 1 0 5 M W - 7 4 M v a r 1 0 8 7 M W - 4 9 M v a r 1 1 2 6 M W - 5 5 M v a r 1127 MW -147 Mvar ID-NW = -1986 MW Grassland = -1513 MW Summer Lake = 71 MW Lolo = -298 MWWalla Walla = -135 MW LaGrande = -132 MW Midpoint West = -1515 MW Borah West = -212 MW Idaho-Sierra = 491 MWN of John Day = 6803 MW COI = 3985 MW PDCI = 3101 MW ID-MT = -330 MW W of McNary = 4097 MW W of Slatt = 4216 MW Alturas Project = 119 MW Path C = -1504 MW Montana Southeast = 557 MW TOT 2B1 = 43 MW TOT 2C = 183 MW 71 MW 45 Mvar 120 MW 69 Mvar 836 MW 50 Mvar 990 MW 42 Mvar 15 M W 78 M v a r 9 3 3 M W - 1 2 7 M v a r 1 5 1 3 M W 2 5 2 M v a r 1448 MW -432 Mvar Page 152 of 776 Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A6: 16hs2sa_2250idnw_N Base Case after the contingency N-2: Double Palo Verde 1.06 puMALIN 0.0 Mvar 223.2 Mvar 223.2 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 224.0 Mvar 224.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.06 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 217.8 Mvar 1.10 puPONDROSA 0.0 Mvar 2 0 5 6 M W - 4 0 8 M v a r 1 8 8 0 M W - 3 7 2 M v a r 2 4 4 0 M W - 6 7 1 M v a r 2359 MW -271 Mvar 301 MW 97 Mvar 262 MW 89 Mvar 536 MW -12 Mvar 1.01 puHEMINWAY 1.07 pu JOHN DAY 435.6 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.06 puLONGHORN 1.06 puSACJWA T 1.04 puMCNRY S1 1.06 puASHE 0.0 Mvar 1.07 pu GRASSLND 170.2 Mvar 1.06 puCOYOTE 1.06 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.06 puHANFORD424.6 Mvar 1.06 puCDR SPRG 1.07 puBUCKLEY 1.02 puLAGRANDE 54.6 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 1.00 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 157.7 Mvar 118.3 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.00 puLOLO 1.01 puHATWAI 1.05 puHATWAI 1.06 puLOW GRAN 1.06 puCEN FERY 0.0 Mvar 1.06 puLIT GOOS 1.02 puOXBOW 1.05 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-85.3 Mvar 1.06 puBORAH 1.00 puMIDPOINT 0.0 Mvar 175.3 Mvar 1.07 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.00 puADELAIDE 0.96 puIDAHO-NV 1.02 puKINPORT 181.9 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 7 3 4 M W - 1 4 1 M v a r 2 0 1 7 M W - 1 0 5 M v a r 2324 MW -150 Mvar 2330 MW -154 Mvar 266 MW -26 Mvar 854 MW 3 Mvar 1611 MW -100 Mvar 1135 MW -103 Mvar 965 MW -61 Mvar 91 MW -87 Mvar 1109 MW -166 Mvar 1496 MW 35 Mvar 278 MW 148 Mvar 5 5 5 M W 8 M v a r 278 MW 76 Mvar 508 MW -55 Mvar 956 MW 72 Mvar 202 MW -4 Mvar 195 MW -9 Mvar 857 MW 67 Mvar 1.04 puANTICLIN 378 MW 15 Mvar 377 MW 14 Mvar 62 MW -126 Mvar 52 MW -109 Mvar 263 MW -25 Mvar 508 MW -55 Mvar 175 MW 10 Mvar 245 MW 77 Mvar 587 MW -82 Mvar 190 MW -74 Mvar 45 MW -62 Mvar 34 MW -66 Mvar 583 MW 186 Mvar 595 MW 47 Mvar 514 MW -209 Mvar 1179 MW -146 Mvar 206 MW -35 Mvar 133 MW -26 Mvar 161 MW -26 Mvar 160 MW -33 Mvar 58 MW -4 Mvar 2 6 2 M W 1 3 M v a r 1 MW -39 Mvar 171 MW -61 Mvar 51 MW -60 Mvar 28 MW -34 Mvar 44 MW -31 Mvar 43 MW -35 Mvar 4 8 3 M W 1 M v a r HORSEFLT 1.00 puBOISEBCH 92.7 Mvar 0.0 Mvar 1.01 puONTARIO 58 MW -4 Mvar 40 MW 10 Mvar 356 MW 38 Mvar 3 2 9 M W - 6 1 M v a r 62 MW -6 Mvar 397 MW -64 Mvar 314 MW -12 Mvar 314 MW -12 Mvar 324 MW -17 Mvar 327 MW -39 Mvar 208 MW -58 Mvar 269 MW -71 Mvar 6 M W - 5 0 M v a r 6 M W - 4 9 M v a r 1189 MW -91 Mvar 1180 MW -38 Mvar 19 MW 69 Mvar 524 MW -32 Mvar 608 MW -1 Mvar 565 MW -32 Mvar 507 MW 21 Mvar 486 MW -1 Mvar 478 MW -0 Mvar 565 MW -23 Mvar 578 MW -25 Mvar 931 MW -148 Mvar 3 8 4 M W 1 2 7 M v a r 1299 MW -185 Mvar 1 9 4 3 M W - 1 9 M v a r 1 8 3 7 M W 6 1 M v a r 1 8 0 2 M W - 9 7 M v a r 1806 MW -306 Mvar ID-NW = -2555 MW Grassland = -1422 MW Summer Lake = -536 MW Lolo = -329 MWWalla Walla = -153 MW LaGrande = -133 MW Midpoint West = -1910 MW Borah West = -540 MW Idaho-Sierra = 555 MWN of John Day = 9004 MW COI = 5831 MW PDCI = 3101 MW ID-MT = -355 MW W of McNary = 4607 MW W of Slatt = 5364 MW Alturas Project = 191 MW Path C = -1957 MWMontana Southeast = 653 MW TOT 2B1 = 234 MW TOT 2C = 325 MW 540 MW -90 Mvar 124 MW 37 Mvar 1217 MW -115 Mvar 1355 MW -61 Mvar 11 M W -95 M v a r 1 0 3 7 M W - 1 0 8 M v a r 1 4 2 2 M W 2 3 5 M v a r 1363 MW -363 Mvar Page 153 of 776 Appendix A – 16hs2sa_2250idnw_N Base Case Post-Transient Contingency Results Figure A7: 16hs2sa_2250idnw_N Base Case after the contingency N-2: DC Bi-pole 1.04 puMALIN 0.0 Mvar 213.4 Mvar 213.4 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 217.3 Mvar 1.08 puPONDROSA 0.0 Mvar 2 2 1 4 M W - 2 2 3 M v a r 2 0 2 8 M W - 2 1 2 M v a r 2 6 1 0 M W - 5 7 5 M v a r 2540 MW -136 Mvar 323 MW -10 Mvar 283 MW -4 Mvar 571 MW -72 Mvar 1.01 puHEMINWAY 1.08 pu JOHN DAY 446.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 173.8 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD453.8 Mvar 1.07 puCDR SPRG 1.07 puBUCKLEY 1.03 puLAGRANDE 55.4 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 159.0 Mvar 119.3 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.05 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-85.3 Mvar 1.06 puBORAH 1.00 puMIDPOINT 0.0 Mvar 175.1 Mvar 1.07 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.00 puADELAIDE 0.96 puIDAHO-NV 1.02 puKINPORT 182.5 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.2 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 7 1 3 M W 7 M v a r 1 9 9 4 M W - 2 M v a r 2572 MW 104 Mvar 2579 MW 101 Mvar 265 MW -54 Mvar 827 MW 2 Mvar 1557 MW -81 Mvar 1081 MW -47 Mvar 906 MW -85 Mvar 142 MW -19 Mvar 996 MW -111 Mvar 1525 MW 20 Mvar 288 MW 140 Mvar 5 6 5 M W 1 2 M v a r 288 MW 68 Mvar 514 MW -66 Mvar 978 MW 64 Mvar 202 MW -9 Mvar 194 MW -14 Mvar 853 MW 61 Mvar 1.04 puANTICLIN 373 MW 14 Mvar 373 MW 12 Mvar 61 MW -128 Mvar 50 MW -111 Mvar 268 MW -32 Mvar 514 MW -66 Mvar 181 MW 2 Mvar 245 MW 74 Mvar 586 MW -83 Mvar 192 MW -78 Mvar 44 MW -65 Mvar 33 MW -70 Mvar 569 MW 186 Mvar 577 MW 50 Mvar 495 MW -261 Mvar 963 MW -92 Mvar 211 MW -33 Mvar 137 MW -24 Mvar 166 MW -24 Mvar 138 MW -20 Mvar 35 MW -1 Mvar 2 6 7 M W 1 5 M v a r 49 MW 19 Mvar 160 MW -48 Mvar 26 MW -52 Mvar 3 MW -26 Mvar 19 MW -23 Mvar 18 MW -27 Mvar 4 7 2 M W - 0 M v a r HORSEFLT 1.00 puBOISEBCH 93.2 Mvar 0.0 Mvar 1.01 puONTARIO 35 MW -1 Mvar 39 MW 9 Mvar 331 MW 43 Mvar 3 0 3 M W - 4 2 M v a r 67 MW -6 Mvar 389 MW -56 Mvar 308 MW -9 Mvar 308 MW -9 Mvar 317 MW -15 Mvar 321 MW -35 Mvar 198 MW -47 Mvar 255 MW -57 Mvar 4 M W - 4 9 M v a r 4 M W - 4 9 M v a r 970 MW -119 Mvar 769 MW 169 Mvar 115 MW -9 Mvar 494 MW -78 Mvar 523 MW -15 Mvar 486 MW -53 Mvar 432 MW 14 Mvar 404 MW -3 Mvar 397 MW -2 Mvar 447 MW -21 Mvar 457 MW -23 Mvar 693 MW -124 Mvar 3 9 9 M W 1 2 8 M v a r 884 MW -128 Mvar 2 1 1 3 M W 2 1 8 M v a r 1 9 7 7 M W 2 5 1 M v a r 1 9 4 5 M W 8 7 M v a r 1949 MW -153 Mvar ID-NW = -2583 MW Grassland = -1447 MW Summer Lake = -571 MW Lolo = -303 MWWalla Walla = -143 MW LaGrande = -137 MW Midpoint West = -1927 MW Borah West = -545 MW Idaho-Sierra = 565 MWN of John Day = 6978 MW COI = 6314 MW PDCI = 0 MW ID-MT = -340 MW W of McNary = 4170 MW W of Slatt = 4677 MWAlturas Project = 194 MW Path C = -1934 MWMontana Southeast = 602 MW TOT 2B1 = 195 MW TOT 2C = 346 MW 575 MW -134 Mvar 142 MW 26 Mvar 904 MW 40 Mvar 1051 MW 40 Mvar 8 M W -94 M v a r 9 3 5 M W - 1 2 6 M v a r 1 4 4 7 M W 2 7 6 M v a r 1386 MW -344 Mvar Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 650.0 780.0 371.5 694.2 106.8% 89.0% 370.8 688.2 105.9% 88.2% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 979.0 1287.7 654.6 1236.5 126.3% 96.0% 639.8 1213.7 124.0% 94.3% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 722.9 1265.2 302.3 792.5 109.6% 62.6% 310.5 787.3 108.9% 62.2% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 3000.0 4050.0 2035.4 3077.2 102.6% 76.0% No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1974.4 2605.1 108.5% 68.6% No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1063.3 105.4% 82.7% No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1658.5 2875.0 117.7% 88.9% 1646.9 2847.8 116.6% 88.0% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3280.0 1658.1 2875.0 130.7% 87.7% 1646.9 2847.8 129.4% 86.8% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 2666.9 4000.0 1658.5 2869.6 107.6% 71.7% 1646.1 2841.2 106.5% 71.0% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at ROUND MT Branch Amp 2667.0 4000.0 1647.4 2856.1 107.1% 71.4% 1637.4 2830.4 106.1% 70.8% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 2699.7 4000.0 1614.4 2803.1 103.8% 70.1% 1602.4 2765.6 102.4% 69.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 2699.7 4000.0 1604.6 2783.6 103.1% 69.6% 1595.2 2749.9 101.9% 68.7% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 1974.4 2720.0 113.3% 71.6% No Violations BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 2445.7 101.9% 64.4% No Violations BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2431.3 101.3% 64.0% No Violations BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 2900.0 4350.0 2217.4 3199.1 110.3% 73.5% No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV GRIJOH22 (90067) -> GRIJOH21 (90066) CKT 2 at GRIJOH22 Branch Amp 3000.0 4050.0 2030.1 3198.2 106.6% 79.0% No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1658.5 2930.2 120.0% 90.6% 1646.9 2904.0 118.9% 89.8% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3280.0 1658.1 2930.2 133.2% 89.3% 1646.9 2904.0 132.0% 88.5% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 2666.9 4000.0 1658.5 2924.0 109.6% 73.1% 1646.1 2896.9 108.6% 72.4% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 2667.0 4000.0 1647.4 2911.6 109.2% 72.8% 1637.4 2886.6 108.2% 72.2% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations Page 155 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 275.2 338.8 105.9% 91.6% 270.1 328.6 102.7% 88.8% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 653.3 1094.6 115.2% 85.1% 650.5 1044.3 109.9% 81.2% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 275.2 348.8 109.0% 94.3% 270.1 335.6 104.9% 90.7% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 653.3 1115.8 117.5% 86.8% 650.5 1057.2 111.3% 82.2% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1163.6 115.3% 90.5% 901.8 1036.0 102.7% 80.6% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 813.0 101.6% 67.8% 715.0 810.6 101.3% 67.6% BF 4708 Hatwai 500 kV Bus AMPS (65025) % Δ Volts 0.963 0.911 -5.40% 0.970 0.920 -5.15% BF 4708 Hatwai 500 kV Bus PTRSNFLT (62030) % Δ Volts 0.957 0.895 -6.48% 0.963 0.904 -6.13% BF 4708 Hatwai 500 kV Bus PTRSNFUR (62386) % Δ Volts 0.966 0.902 -6.63% 0.980 0.918 -6.33% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 970.5 105.5% 92.7% 775.1 965.6 105.0% 92.2% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations Page 156 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 2400.0 3800.0 1724.7 2493.1 103.9% 65.6% No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2482.9 103.5% 65.3% No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1378.5 111.4% 98.8% No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 1026.7 111.6% 98.1% No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 827.7 103.5% 69.0% No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 2476.2 103.2% 65.2% No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2463.3 102.6% 64.8% No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1388.9 112.3% 99.5% No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 1038.1 112.8% 99.2% No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 833.7 104.2% 69.5% No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 2900.0 4350.0 2217.4 2906.7 100.2% 66.8% No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 2435.4 101.5% 64.1% No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2416.3 100.7% 63.6% No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1311.8 106.0% 94.0% No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1069.7 106.0% 83.2% No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 969.8 105.4% 92.6% No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 807.6 101.0% 67.3% No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV GRIJOH22 (90067) -> GRIJOH21 (90066) CKT 2 at GRIJOH21 Branch Amp 3000.0 4050.0 2030.1 3196.9 106.6% 78.9% No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 Contingency Unavailable 1118.5 1370.0 110.7% 98.1% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 Contingency Unavailable 775.1 1007.4 109.5% 96.2% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 715.0 825.6 103.2% 68.8% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts Contingency Unavailable 0.970 0.909 -6.29% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts Contingency Unavailable 0.963 0.890 -7.58% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts Contingency Unavailable 0.980 0.903 -7.86% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1321.1 106.8% 94.6% No Violations Page 157 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 974.5 105.9% 93.1% No Violations BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 804.9 100.6% 67.1% No Violations BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1313.1 106.1% 94.1% 1118.5 1389.7 112.3% 99.6% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 965.8 105.0% 92.3% 775.1 1029.8 111.9% 98.4% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 No Violations 715.0 806.1 100.8% 67.2% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.963 0.909 -5.61% 0.970 0.916 -5.57% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.957 0.898 -6.17% 0.963 0.902 -6.33% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.966 0.906 -6.21% 0.980 0.916 -6.53% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1270.7 102.7% 91.0% 1118.5 1257.8 101.7% 90.1% BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 No Violations BF McNary 230 kV SECT 3 FRANKLIN (40443) % Δ Volts 1.005 0.946 -5.87% 1.005 0.943 -6.17% BF PGE Grassland - Slatt 500 kV & Boardman Plant No Violations BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 Contingency Unavailable 1118.5 1385.9 112.0% 99.3% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 Contingency Unavailable 775.1 1021.2 111.0% 97.6% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 Contingency Unavailable 901.8 1009.8 100.1% 78.6% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 715.0 934.7 116.8% 77.9% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 Contingency Unavailable 1744.6 2431.5 101.3% 64.0% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV BIGGRASS (65155) % Δ Volts Contingency Unavailable 0.988 0.937 -5.16% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV DILLON S (62084) % Δ Volts Contingency Unavailable 0.983 0.931 -5.29% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV AMPS (65025) % Δ Volts Contingency Unavailable 97.0% 0.9 -7.22% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV PTRSNFLT (62030) % Δ Volts Contingency Unavailable 96.3% 0.882 -8.41% BF PGE Grassland-Cedar Sp 500 kV & Grassland - Hem 500 kV PTRSNFUR (62386) % Δ Volts Contingency Unavailable 98.0% 0.894 -8.78% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 Contingency Unavailable 1118.5 1383.6 111.8% 99.1% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 Contingency Unavailable 775.1 1018.4 110.7% 97.3% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 Contingency Unavailable 901.8 1009.4 100.0% 78.5% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 715.0 832.3 104.0% 69.4% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 Contingency Unavailable 1744.6 2426.8 101.1% 63.9% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN PTRSNFUR (62386) % Δ Volts Contingency Unavailable 0.980 0.930 -5.10% BF PGE Grassland-Cedar Sp 500 kV & Grassland-Hem 500 kv + PTSN AMPS (65025) % Δ Volts Contingency Unavailable 0.970 0.920 -5.15% BF PGE Grassland-Coyote Springs 500 kV & Carty Plant No Violations Bus: Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1142.9 113.3% 88.9% 901.8 1015.3 100.6% 79.0% Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 94.0 139.0 82.1 97.9 104.2% 70.4% No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 2478.2 103.3% 65.2% No Violations Bus: Summer Lake 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2465.3 102.7% 64.9% No Violations Bus: Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1388.6 112.3% 99.5% No Violations Page 158 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Bus: Summer Lake 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 1036.5 112.7% 99.0% No Violations Bus: Summer Lake 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 833.1 104.1% 69.4% No Violations N-1: Allston-Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 94.0 139.0 82.1 97.9 104.1% 70.4% No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1212.4 120.1% 94.3% 901.8 1082.7 107.3% 84.2% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV QUARTZ (60305) -> NELSN TP (61055) CKT 1 at QUARTZ Branch Amp 400.0 491.2 217.4 408.5 102.1% 83.2% No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 785.7 926.3 267.2 837.8 106.6% 90.4% 281.9 850.5 108.2% 91.8% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 785.7 926.3 267.2 837.8 106.6% 90.4% 281.9 850.5 108.2% 91.8% N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1658.5 2552.8 104.5% 78.9% 1646.9 2524.5 103.4% 78.0% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3280.0 1658.1 2552.8 116.0% 77.8% 1646.9 2524.5 114.8% 77.0% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 2199.9 3280.5 1810.8 2449.3 111.3% 74.7% 1802.9 2428.8 110.4% 74.0% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 2199.9 3280.5 1795.5 2428.6 110.4% 74.0% 1787.6 2408.3 109.5% 73.4% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2477.9 4000.0 2011.7 2676.2 108.0% 66.9% 1971.2 2626.5 106.0% 65.7% N-1: Captain Jack-Olinda 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 2667.0 4000.0 2011.7 2676.2 100.3% 66.9% No Violations N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 Contingency Unavailable 901.8 1018.2 100.9% 79.2% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 979.0 1287.7 654.6 1193.7 121.9% 92.7% 639.8 1170.4 119.6% 90.9% Page 159 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: Dixonville-Meridian 500 kV GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 722.9 1265.2 302.3 741.3 102.5% 58.6% 310.5 736.3 101.8% 58.2% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 816.0 102.0% 68.0% 715.0 814.1 101.8% 67.8% N-1: Dworshak-Hatwai 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.957 0.906 -5.33% 0.963 0.913 -5.19% N-1: Dworshak-Hatwai 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.966 0.913 -5.49% 0.980 0.928 -5.31% N-1: Dworshak-Hatwai 500 kV + RAS + PTSN No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 3000.0 4050.0 2035.4 3182.8 106.1% 78.6% No Violations N-1: Grizzly-Malin 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1974.4 2723.4 113.5% 71.7% 1744.6 2404.9 100.2% 63.3% N-1: Grizzly-Malin 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 2453.0 102.2% 64.6% No Violations N-1: Grizzly-Malin 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2439.3 101.6% 64.2% No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 2534.1 105.6% 66.7% No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1709.0 2518.9 105.0% 66.3% No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1261.4 102.0% 90.4% No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 924.4 100.5% 88.3% No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1974.4 2720.2 113.3% 71.6% 1744.6 2402.9 100.1% 63.2% N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 970.1 105.4% 92.7% 775.1 965.2 104.9% 92.2% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 1009.2 109.7% 96.4% 775.1 980.1 106.5% 93.6% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 Contingency Unavailable 1118.5 1366.1 110.4% 97.9% N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 Contingency Unavailable 775.1 1004.8 109.2% 96.0% N-1: Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 715.0 825.6 103.2% 68.8% N-1: Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts Contingency Unavailable 0.970 0.910 -6.19% N-1: Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts Contingency Unavailable 0.963 0.892 -7.37% N-1: Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts Contingency Unavailable 0.980 0.905 -7.65% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 2400.0 3200.0 Contingency Unavailable 1737.7 2925.7 121.9% 91.4% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 Contingency Unavailable 1744.6 2945.5 122.7% 77.5% Page 160 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) % Δ Volts Contingency Unavailable 1.101 1.191 8.17% N-1: Hemingway-Grassland 500 kV + FACRI CAPPON16 (90142) % Δ Volts Contingency Unavailable 1.099 1.169 6.37% N-1: Hemingway-Grassland 500 kV + FACRI GRIMAL21 (90068) % Δ Volts Contingency Unavailable 1.098 1.161 5.74% N-1: Hemingway-Grassland 500 kV + FACRI CAPPON14 (90140) % Δ Volts Contingency Unavailable 1.078 1.134 5.19% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 Contingency Unavailable 1118.5 1360.9 110.0% 97.5% N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 Contingency Unavailable 775.1 1000.4 108.7% 95.6% N-1: Hemingway-Grassland 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 715.0 826.8 103.3% 68.9% N-1: Hemingway-Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1329.3 107.5% 95.2% No Violations N-1: Hemingway-Summer Lake 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 983.0 106.8% 93.9% No Violations N-1: Hemingway-Summer Lake 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 801.7 100.2% 66.8% No Violations N-1: Hemingway-Summer Lake 500 kV AMPS (65025) % Δ Volts 0.963 0.914 -5.09% No Violations N-1: Hemingway-Summer Lake 500 kV PTRSNFUR (62386) % Δ Volts 0.966 0.907 -6.11% No Violations N-1: Hemingway-Summer Lake 500 kV PTRSNFLT (62030) % Δ Volts 0.957 0.900 -5.96% No Violations N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 2900.0 4350.0 2217.4 2906.7 100.2% 66.8% No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1083.7 107.4% 84.3% No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1658.5 2877.3 117.8% 88.9% 1646.9 2850.2 116.7% 88.1% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3280.0 1658.1 2877.3 130.8% 87.7% 1646.9 2850.2 129.6% 86.9% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 2666.9 4000.0 1658.5 2871.6 107.7% 71.8% 1646.1 2843.3 106.6% 71.1% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 2667.0 4000.0 1647.4 2858.8 107.2% 71.5% 1637.4 2833.0 106.2% 70.8% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 2699.7 4000.0 1614.4 2852.1 105.6% 71.3% 1602.4 2823.7 104.6% 70.6% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at ROUND MT Branch Amp 2699.7 4000.0 1604.6 2836.6 105.1% 70.9% 1595.2 2810.9 104.1% 70.3% N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations Page 161 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1251.2 101.1% 89.6% No Violations N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV No Violations N-1: Midpoint-Hemingway 500 kV + PTSN Shunt No Violations N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1275.0 103.1% 91.3% 1118.5 1262.0 102.0% 90.4% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 275.2 363.4 113.6% 98.2% 270.1 351.8 109.9% 95.1% N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 653.3 1240.8 130.6% 96.5% 650.5 1185.6 124.8% 92.2% N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 275.2 339.1 106.0% 91.6% 270.1 327.4 102.3% 88.5% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 653.3 1094.7 115.2% 85.1% 650.5 1040.3 109.5% 80.9% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 2199.9 3280.5 1810.8 3262.0 148.3% 99.4% 1802.9 3244.0 147.5% 98.9% N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUTAB21 Branch Amp 2667.0 4000.0 1810.8 3262.0 122.3% 81.5% 1802.9 3244.0 121.6% 81.1% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 2667.0 4000.0 1799.4 3246.7 121.7% 81.2% 1793.3 3230.5 121.1% 80.8% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 2667.0 4000.0 2011.7 2981.7 111.8% 74.5% 1971.2 2954.1 110.8% 73.9% N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2477.9 4000.0 2011.7 2981.7 120.3% 74.5% 1971.2 2954.1 119.2% 73.9% Page 162 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at TABVAC12 Branch Amp 2667.0 4000.0 1984.8 2960.1 111.0% 74.0% 1945.3 2934.0 110.0% 73.4% N-1: Table Mtn-Tesla 500 kV VACTES11 (30044) -> TESLA (30040) CKT 1 at VACTES11 Branch Amp 2230.0 3555.9 No Violations 1388.1 2293.8 102.9% 64.5% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 2230.0 3555.9 1480.0 2673.3 119.9% 75.2% 1500.9 2664.4 119.5% 74.9% N-1: Table Mtn-Vaca Dixon 500 kV TABLE MT (30015) -> TABTES11 (30041) CKT 1 at TABTES11 Branch Amp 2667.0 4000.0 1480.0 2673.3 100.2% 66.8% No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 2900.0 4350.0 2217.4 3260.5 112.4% 75.0% No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 717.0 834.0 104.2% 69.5% 715.0 811.7 101.5% 67.6% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS AMPS (65025) % Δ Volts 0.963 0.897 -6.85% 0.970 0.920 -5.15% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.957 0.878 -8.25% 0.963 0.903 -6.23% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.966 0.884 -8.49% 0.980 0.917 -6.43% N-2: Bethel - Cedar Spring 500 kV / Bethel - Round Butte 230 kV No Violations N-2: Bethel - Cedar Spring 500 kV / Bethel - Santiam 230 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 Contingency Unavailable 901.8 1032.7 102.3% 80.4% N-2: Bethel - Cedar Spring 500 kV / Santiam - Mikkalo 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 Contingency Unavailable 901.8 1018.0 100.9% 79.2% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV BROONT12 (61981) -> ONTARIO (60265) CKT 1 at BROONT12 Branch Amp 1590.0 2147.0 949.3 1593.5 100.2% 74.2% No Violations N-2: Bridger-Populus #1 & #2 345 kV No Violations N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV No Violations N-2: Broadview-Garrisont #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 983.6 106.9% 94.0% 775.1 952.0 103.5% 90.9% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 2400.0 3200.0 1968.1 3178.6 132.4% 99.3% 1737.7 2814.2 117.3% 87.9% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1974.4 3193.5 133.1% 84.0% 1744.6 2829.2 117.9% 74.5% Page 163 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 2199.9 3280.5 1810.8 2442.7 111.0% 74.5% 1802.9 2424.6 110.2% 73.9% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 2199.9 3280.5 1795.5 2422.0 110.1% 73.8% 1787.6 2404.1 109.3% 73.3% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3280.0 1658.1 2343.8 106.5% 71.5% 1646.9 2320.3 105.5% 70.7% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 2134.0 3499.9 No Violations 1559.3 2266.1 106.2% 64.7% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2477.9 4000.0 2011.7 2635.6 106.4% 65.9% 1971.2 2589.0 104.5% 64.7% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 2134.0 3499.9 No Violations 1539.5 2234.0 104.7% 63.8% N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 2134.0 3499.9 No Violations 1517.5 2204.7 103.3% 63.0% N-2: DC-BIPOLE HESPERUS (79071) -> COYOTE G (79191) CKT 1 at HESPERUS Branch Amp 431.8 441.8 391.4 459.3 106.4% 104.0% No Violations N-2: DC-BIPOLE TL TAP (66557) -> DIXCLTP (65467) CKT 1 at DIXCLTP Branch Amp 234.3 234.3 230.1 235.6 100.6% 100.6% No Violations N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 2400.0 3200.0 1968.1 2957.8 123.2% 92.4% 1737.7 2603.9 108.5% 81.4% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1974.4 2977.1 124.0% 78.3% 1744.6 2623.4 109.3% 69.0% N-2: Double Palo Verde ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 2199.9 3280.5 1810.8 2234.5 101.6% 68.1% 1802.9 2220.0 100.9% 67.7% N-2: Double Palo Verde ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 2199.9 3280.5 1795.5 2215.6 100.7% 67.5% 1787.6 2201.2 100.1% 67.1% N-2: Double Palo Verde HESPERUS (79071) -> COYOTE G (79191) CKT 1 at HESPERUS Branch Amp 431.8 441.8 391.4 477.5 110.6% 108.1% No Violations N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS No Violations N-2: Grassland - Cedar Spring 500 kV / Slatt - Buckley 500 kV No Violations N-2: Grassland - Coyote 500 kV / Slatt - Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 Contingency Unavailable 1118.5 1239.0 100.2% 88.8% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1974.4 3774.1 157.3% 99.3% 1744.6 3351.4 139.6% 88.2% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 2700.0 4000.0 1349.3 3274.6 121.3% 81.9% 1414.8 3221.7 119.3% 80.5% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS GRIZZ R3 (40488) -> PONDROSA (40837) CKT 1 at GRIZZ R3 Branch Amp 3780.0 3780.0 2082.4 3971.7 105.1% 105.1% No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS GRIZZLY (40489) -> GRIZZ R3 (40488) CKT 1 at GRIZZ R3 Branch Amp 3780.0 3780.0 2087.3 3971.7 105.1% 105.1% No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONDROSA (40837) -> PONSUM11 (90099) CKT 1 at PONDROSA Branch Amp 3780.0 3780.0 1992.5 3788.2 100.2% 100.2% No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1057.9 104.8% 82.3% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 3647.0 152.0% 96.0% 1632.9 3170.8 132.1% 83.4% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON12 Branch Amp 2400.0 3800.0 1709.0 3633.9 151.4% 95.6% 1618.4 3157.2 131.5% 83.1% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS GRIZZLY (40489) -> PONDROSB (40834) CKT 1 at PONDROSB Branch Amp 3500.0 3500.0 1834.0 3836.5 109.6% 109.6% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS PONDROSB (40834) -> CAPPON16 (90142) CKT 1 at PONDROSB Branch Amp 3500.0 3500.0 1740.0 3659.8 104.6% 104.6% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON15 (90141) -> CAPPON14 (90140) CKT 1 at CAPPON15 Branch Amp 3500.0 3500.0 1724.7 3647.0 104.2% 104.2% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON13 (90139) -> CAPPON12 (90138) CKT 1 at CAPPON13 Branch Amp 3500.0 3500.0 1718.1 3646.2 104.2% 104.2% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON11 (90137) -> CAPTJACK (45035) CKT 1 at CAPPON11 Branch Amp 3220.0 3220.0 1709.0 3633.9 112.9% 112.9% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1252.9 101.3% 89.8% No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1057.1 104.8% 82.2% No Violations N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1724.7 3271.1 136.3% 86.1% 1632.9 3187.7 132.8% 83.9% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON12 Branch Amp 2400.0 3800.0 1709.0 3259.6 135.8% 85.8% 1618.4 3177.3 132.4% 83.6% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON11 (90137) -> CAPTJACK (45035) CKT 1 at CAPPON11 Branch Amp 3220.0 3220.0 1709.0 3259.6 101.2% 101.2% No Violations N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 2900.0 4350.0 2217.4 3850.3 132.8% 88.5% 1856.1 3167.7 109.2% 72.8% N-2: John Day-Grizzly #1 & #2 500 kV + RAS HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1395.9 1116.2 1257.0 101.6% 90.0% No Violations Page 164 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: John Day-Grizzly #1 & #2 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1086.5 107.7% 84.5% No Violations N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS JOHN DAY (40585) -> GRIJOH12 (90065) CKT 1 at JOHN DAY Branch Amp 3500.0 3500.0 2040.9 4012.6 114.6% 114.6% 1891.3 3540.0 101.1% 101.1% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH11 (90064) -> GRIZZLY (40489) CKT 1 at GRIJOH11 Branch Amp 3500.0 3500.0 2035.4 4007.5 114.5% 114.5% 1882.9 3532.5 100.9% 100.9% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 3000.0 4050.0 2035.4 4007.5 133.6% 99.0% 1882.9 3532.5 117.7% 87.2% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1018.9 1049.6 104.0% 81.7% No Violations N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 275.2 359.7 112.4% 97.2% 270.1 348.3 108.8% 94.1% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 653.3 1240.9 130.6% 96.5% 650.5 1185.8 124.8% 92.2% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 94.0 139.0 82.1 100.4 106.8% 72.2% 79.4 96.5 102.6% 69.4% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40597) -> FOR GROV (40427) CKT 2 at KEELER Branch Amp 850.0 850.0 589.2 876.7 103.1% 103.1% 578.0 846.2 99.6% 99.6% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CARLTON (40181) % Δ Volts No Violations 1.026 0.971 -5.36% N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV DRYGULCH (48113) -> DRYGULCH (45097) CKT 1 at DRYGULCH Branch MVA 20.0 20.0 14.5 20.9 104.7% 104.7% No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 795.4 1017.6 110.6% 97.2% 775.1 1016.3 110.5% 97.1% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 2667.4 4099.2 1814.9 3755.2 140.8% 91.6% 1814.6 3725.7 139.7% 90.9% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 2667.4 4099.2 1783.4 3647.4 136.7% 89.0% 1781.5 3618.1 135.6% 88.3% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPOLI11 Branch Amp 2667.4 4099.2 1783.4 3647.4 136.7% 89.0% 1781.5 3618.1 135.6% 88.3% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 2993.0 4514.9 1956.4 3206.7 107.1% 71.0% 1971.1 3202.0 107.0% 70.9% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 2993.0 4514.9 1956.4 3206.7 107.1% 71.0% 1971.1 3202.0 107.0% 70.9% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 2993.0 4514.9 1924.7 3172.8 106.0% 70.3% 1941.6 3169.7 105.9% 70.2% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 2993.0 4514.9 1924.7 3172.8 106.0% 70.3% 1941.6 3169.7 105.9% 70.2% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 2993.0 4514.9 1902.5 3135.0 104.7% 69.4% 1920.3 3132.7 104.7% 69.4% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV HORSE HV (40547) % Δ Volts 1.031 0.979 -5.04% 1.032 0.980 -5.04% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV PTRSNFUR (62386) % Δ Volts No Violations 0.980 0.929 -5.20% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 275.2 340.8 106.5% 92.1% 270.1 329.3 102.9% 89.0% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 653.3 1099.6 115.8% 85.5% 650.5 1045.8 110.1% 81.3% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations Page 165 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Post-Transient Contingency Results 1200 HS Case 2250 HS Case Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 830.9 953.9 703.3 925.6 111.4% 97.0% 688.9 910.6 109.6% 95.5% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS BRDGVLLE (31110) -> FRUTLDJT (31120) CKT 1 at BRDGVLLE Branch Amp 328.1 371.4 292.6 333.2 101.5% 89.7% 290.3 330.7 100.8% 89.0% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 2667.4 4099.2 1814.9 3468.3 130.0% 84.6% 1814.6 3448.3 129.3% 84.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 2667.4 4099.2 1783.4 3374.0 126.5% 82.3% 1781.5 3355.8 125.8% 81.9% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 2667.4 4099.2 1783.4 3362.9 126.1% 82.0% 1781.5 3342.8 125.3% 81.5% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 2993.0 4514.9 1956.4 3500.6 117.0% 77.5% 1971.1 3501.4 117.0% 77.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 2993.0 4514.9 1956.4 3500.6 117.0% 77.5% 1971.1 3501.4 117.0% 77.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 2993.0 4514.9 1924.7 3481.3 116.3% 77.1% 1941.6 3483.0 116.4% 77.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 2993.0 4514.9 1924.7 3481.3 116.3% 77.1% 1941.6 3483.0 116.4% 77.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 2993.0 4514.9 1902.5 3448.4 115.2% 76.4% 1920.3 3450.7 115.3% 76.4% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS FRUTLDJT (31120) -> FTSWRDJT (31122) CKT 1 at FRUTLDJT Branch Amp 303.1 339.7 265.1 304.6 100.5% 89.7% No Violations N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 825.9 976.5 285.9 922.0 111.6% 94.4% 285.6 921.2 111.5% 94.3% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 825.1 975.0 232.8 863.4 104.6% 88.6% 232.5 862.6 104.5% 88.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 462.9 579.9 396.9 474.8 102.6% 81.9% 389.2 466.5 100.8% 80.4% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2477.9 4000.0 2011.7 2549.7 102.9% 63.7% 1971.2 2544.4 102.7% 63.6% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.82 -1153 0.89 -3838 0.74 -2642 0.70 -454 0.97 -2224 0.80 -3220 0.91 -1649 0.75 -588 0.75 -349 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.82 -1138 0.88 -3946 0.74 -2598 0.70 -450 0.97 -2992 0.76 -3254 0.89 -2079 0.76 -582 0.75 -344 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.81 -1170 0.88 -4071 0.73 -2682 0.70 -454 0.97 -3076 0.81 -3339 0.93 -1581 0.75 -600 0.75 -351 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.82 -1131 0.88 -4024 0.74 -2561 0.70 -444 0.97 -2252 0.87 -2498 0.85 -2319 0.76 -582 0.75 -338 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.81 -1162 0.84 -3641 0.73 -2686 0.70 -457 0.98 -2857 0.83 -3288 0.85 -2410 0.76 -578 0.75 -344 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.82 -1170 0.87 -4200 0.74 -2672 0.70 -420 0.97 -2516 0.82 -3334 0.85 -2509 0.75 -602 0.75 -353 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.81 -1212 0.87 -4023 0.74 -2746 0.70 -459 0.97 -2597 0.81 -3512 0.84 -2650 0.78 -531 0.76 -294 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.83 -1059 0.90 -3552 0.75 -2360 0.70 -432 0.98 -1698 0.84 -2509 0.87 -1941 0.77 -550 0.76 -316 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.82 -1151 0.87 -4089 0.74 -2590 0.70 -444 0.97 -3019 0.81 -2861 0.85 -2418 0.75 -591 0.75 -345 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.83 -1093 0.89 -3805 0.74 -2408 0.70 -428 0.98 -1941 0.82 -2393 0.87 -2119 0.76 -566 0.76 -326 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.81 -1177 0.85 -3910 0.73 -2714 0.70 -457 0.97 -2498 0.82 -3435 0.84 -2586 0.75 -600 0.75 -352 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.81 -1176 0.84 -3732 0.74 -2717 0.70 -458 0.97 -2469 0.82 -3409 0.85 -2542 0.75 -590 0.75 -347 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.81 -1212 0.88 -3966 0.74 -2745 0.70 -459 0.97 -2592 0.81 -3514 0.84 -2648 0.78 -524 0.76 -293 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.81 -1192 0.87 -4363 0.73 -2744 0.70 -458 0.97 -2634 0.81 -3521 0.84 -2683 0.75 -614 0.75 -352 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500 KV 0.81 -1190 0.87 -4102 0.73 -2737 0.70 -458 0.97 -2571 0.81 -3467 0.84 -2637 0.78 -540 0.75 -354 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.82 -1105 0.89 -3747 0.74 -2481 0.70 -444 0.97 -2463 0.84 -2849 0.86 -2163 0.76 -574 0.75 -333 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.82 -1100 0.90 -3550 0.74 -2487 0.70 -445 0.97 -1700 0.85 -2687 0.88 -2011 0.76 -567 0.76 -329 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.81 -1187 0.87 -4218 0.73 -2730 0.70 -458 0.97 -2602 0.81 -3494 0.84 -2665 0.77 -542 0.75 -335 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.82 -1159 0.89 -3799 0.73 -2641 0.70 -453 0.97 -2637 0.83 -3048 0.84 -2093 0.75 -596 0.75 -350 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.82 -1137 0.88 -4019 0.74 -2531 0.70 -404 0.97 -2266 0.83 -2697 0.86 -2279 0.76 -586 0.75 -342 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.82 -1145 0.88 -3666 0.74 -2653 0.70 -455 0.97 -2065 0.84 -3202 0.86 -2317 0.76 -570 0.76 -331 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.81 -1171 0.88 -3981 0.73 -2677 0.70 -456 0.96 -2243 0.83 -3216 0.86 -2411 0.75 -601 0.75 -353 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.81 -1185 0.87 -4155 0.73 -2716 0.70 -458 0.96 -3135 0.81 -3377 0.84 -2527 0.75 -607 0.75 -357 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.81 -1111 0.87 -4138 0.74 -2708 0.70 -459 0.97 -2533 0.81 -3455 0.84 -2596 0.75 -598 0.75 -348 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.81 -1175 0.88 -3873 0.73 -2794 0.70 -467 0.97 -2512 0.82 -3572 0.84 -2602 0.75 -594 0.75 -356 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.81 -1166 0.88 -3678 0.74 -2703 0.70 -458 0.97 -2354 0.82 -3357 0.85 -2467 0.76 -574 0.76 -330 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.81 -1178 0.85 -3975 0.73 -2719 0.70 -458 0.97 -3201 0.82 -3447 0.84 -2605 0.75 -599 0.75 -352 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.81 -1184 0.88 -4064 0.73 -2732 0.70 -458 0.97 -2582 0.81 -3488 0.84 -2643 0.75 -595 0.75 -352 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.81 -1184 0.87 -4210 0.73 -2731 0.70 -458 0.97 -3268 0.81 -3481 0.84 -2656 0.75 -602 0.75 -354 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV + RAS 0.81 -1192 0.88 -3787 0.73 -2794 0.70 -466 0.97 -3068 0.84 -3343 0.80 -1982 0.75 -602 0.75 -366 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV + RAS 0.81 -1194 0.88 -3824 0.73 -2811 0.70 -467 0.98 -3030 0.82 -3593 0.83 -2358 0.75 -602 0.75 -366 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.81 -1177 0.88 -4055 0.73 -2702 0.70 -457 0.98 -2243 0.83 -3294 0.84 -2401 0.75 -603 0.75 -354 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.81 -1184 0.87 -4106 0.73 -2729 0.70 -458 0.97 -2553 0.81 -3467 0.84 -2621 0.75 -605 0.75 -355 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.81 -1182 0.88 -3919 0.73 -2731 0.70 -458 0.97 -2562 0.81 -3481 0.84 -2621 0.75 -597 0.75 -352 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.81 -1182 0.88 -3916 0.73 -2730 0.70 -458 0.97 -2550 0.81 -3474 0.84 -2614 0.75 -597 0.75 -352 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV + RAS 0.81 -1159 0.88 -3872 0.73 -2717 0.70 -459 0.98 -2145 0.86 -2927 0.83 -2246 0.74 -610 0.75 -371 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.81 -1175 0.88 -4075 0.73 -2684 0.70 -456 0.97 -2365 0.82 -3300 0.81 -2231 0.75 -604 0.75 -355 BF 4432 OSTRANDER-TROUTDALE & SPLIT OSTRANDER 500 KV 0.81 -1186 0.87 -4239 0.73 -2731 0.70 -458 0.98 -2427 0.81 -3473 0.84 -2606 0.75 -607 0.75 -356 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.81 -1184 0.87 -4174 0.73 -2721 0.70 -458 0.98 -3035 0.82 -3404 0.84 -2518 0.75 -606 0.75 -356 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.81 -1183 0.87 -4194 0.73 -2719 0.70 -457 0.98 -2360 0.81 -3415 0.83 -2532 0.75 -606 0.75 -356 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.81 -1179 0.88 -4092 0.73 -2709 0.70 -457 0.98 -2297 0.82 -3353 0.84 -2458 0.75 -604 0.75 -354 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.81 -1178 0.88 -4111 0.73 -2706 0.70 -457 0.98 -2230 0.82 -3355 0.84 -2468 0.75 -603 0.75 -354 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV + RAS 0.81 -1219 0.91 -3482 0.73 -2973 0.70 -481 0.98 -2662 0.82 -4064 0.85 -2568 0.73 -622 0.74 -393 Page 167 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.81 -1169 0.88 -3945 0.73 -2661 0.70 -456 0.97 -2205 0.85 -3006 0.81 -1825 0.75 -597 0.75 -350 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV + RAS 0.81 -1237 0.88 -4196 0.73 -2974 0.70 -480 0.97 -3539 0.80 -4145 0.82 -2989 0.72 -654 0.74 -407 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.81 -1158 0.89 -3583 0.74 -2667 0.70 -455 0.98 -2129 0.83 -3278 0.86 -2402 0.76 -577 0.75 -339 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV + RAS 0.81 -1213 0.89 -3822 0.73 -2901 0.70 -473 0.97 -2805 0.80 -3963 0.83 -2868 0.74 -623 0.74 -383 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.81 -1178 0.88 -4099 0.73 -2716 0.70 -457 0.97 -2481 0.81 -3419 0.84 -2561 0.75 -599 0.75 -352 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.81 -1190 0.88 -3896 0.73 -2783 0.70 -463 0.97 -2511 0.82 -3564 0.84 -2553 0.75 -601 0.75 -361 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.81 -1194 0.89 -3996 0.73 -2795 0.70 -464 0.97 -2622 0.81 -3640 0.84 -2672 0.75 -605 0.75 -364 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.81 -1176 0.87 -4076 0.74 -2707 0.70 -457 0.97 -3090 0.82 -3377 0.85 -2486 0.75 -596 0.75 -350 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.81 -1188 0.87 -4316 0.73 -2738 0.70 -458 0.97 -3314 0.81 -3520 0.84 -2686 0.75 -608 0.75 -357 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.81 -1083 0.87 -3684 0.74 -2692 0.70 -458 0.98 -2335 0.82 -3414 0.85 -2477 0.76 -574 0.76 -329 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.81 -1180 0.87 -4204 0.73 -2725 0.70 -458 0.97 -2559 0.81 -3465 0.84 -2625 0.75 -601 0.75 -352 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.81 -1260 0.87 -4209 0.73 -2918 0.70 -473 0.97 -3651 0.80 -3965 0.82 -2935 0.77 -564 0.75 -354 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.81 -1179 0.89 -3664 0.73 -2714 0.70 -458 0.97 -3120 0.82 -3403 0.85 -2546 0.75 -595 0.75 -351 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.81 -1173 0.87 -4031 0.73 -2715 0.70 -457 0.97 -2509 0.82 -3444 0.84 -2585 0.75 -597 0.75 -349 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.81 -1174 0.88 -4032 0.73 -2703 0.70 -457 0.97 -2379 0.82 -3357 0.85 -2449 0.75 -595 0.75 -349 BF 4700 HATWAI 500KV & 230 KV + RAS 0.81 -1276 0.87 -4154 0.73 -2927 0.70 -475 0.97 -2936 0.80 -3918 0.82 -2906 0.77 -557 0.75 -348 BF 4708 HATWAI 500 KV BUS 0.82 -1202 0.88 -3723 0.74 -2727 0.70 -460 0.97 -2562 0.82 -3498 0.84 -2614 0.80 -454 0.77 -255 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.81 -1185 0.87 -4098 0.73 -2732 0.70 -458 0.97 -3265 0.81 -3481 0.84 -2647 0.75 -602 0.75 -354 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV + RAS 0.81 -1169 0.87 -4124 0.73 -2825 0.70 -466 0.97 -2854 0.80 -3832 0.83 -2842 0.75 -609 0.75 -353 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.81 -1121 0.87 -3987 0.74 -2698 0.70 -457 0.97 -2627 0.82 -3545 0.84 -2674 0.78 -520 0.76 -303 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.81 -1188 0.87 -4216 0.73 -2729 0.70 -458 0.95 -2638 0.82 -3446 0.84 -2611 0.75 -608 0.75 -357 BF 4888 ASHE-SLATT & CGS 500 KV 0.81 -1191 0.87 -3700 0.73 -2864 0.70 -472 0.97 -2692 0.81 -3805 0.83 -2737 0.75 -589 0.75 -358 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.81 -1146 0.86 -3378 0.74 -2682 0.70 -458 0.98 -2134 0.84 -3234 0.86 -2331 0.76 -564 0.76 -328 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.81 -1150 0.85 -3623 0.74 -2710 0.70 -458 0.98 -2331 0.82 -3387 0.86 -2441 0.76 -567 0.76 -329 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.82 -1134 0.88 -3472 0.74 -2607 0.70 -452 0.98 -1853 0.85 -2991 0.86 -2045 0.76 -576 0.75 -336 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.84 -1032 0.88 -3953 0.75 -1865 0.70 -448 0.97 -2835 0.81 -2638 0.86 -2259 0.77 -554 0.76 -320 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.83 -1056 0.89 -3811 0.76 -1916 0.70 -450 0.98 -2591 0.82 -2481 0.87 -2122 0.77 -553 0.76 -319 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.82 -1170 0.87 -4271 0.73 -2679 0.70 -454 0.97 -2572 0.71 -3330 0.84 -2634 0.75 -601 0.75 -352 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.82 -1129 0.89 -3781 0.74 -2552 0.70 -449 0.98 -1920 0.84 -3010 0.86 -2191 0.76 -582 0.75 -338 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.82 -1166 0.87 -4080 0.73 -2616 0.70 -453 0.97 -2359 0.82 -3384 0.85 -2543 0.75 -606 0.75 -356 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.82 -1107 0.88 -3337 0.74 -2554 0.70 -448 0.98 -1755 0.86 -2887 0.87 -2018 0.77 -554 0.76 -321 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.82 -1143 0.87 -3563 0.74 -2637 0.70 -455 0.97 -1991 0.84 -3216 0.86 -2313 0.76 -570 0.76 -330 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.82 -1163 0.88 -4003 0.74 -2642 0.70 -453 0.97 -2864 0.82 -3347 0.85 -2473 0.75 -602 0.75 -353 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.83 -1022 0.90 -3518 0.75 -2290 0.70 -444 0.98 -2309 0.83 -2539 0.88 -1951 0.77 -531 0.76 -305 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.82 -1114 0.89 -3845 0.74 -2523 0.70 -447 0.97 -2012 0.83 -2879 0.86 -2220 0.76 -573 0.75 -332 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.81 -1181 0.88 -3905 0.73 -2727 0.70 -458 0.97 -2531 0.82 -3467 0.84 -2608 0.75 -591 0.75 -350 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.81 -1181 0.88 -3910 0.73 -2723 0.70 -458 0.97 -2500 0.82 -3453 0.84 -2593 0.75 -597 0.75 -352 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.81 -1176 0.88 -3702 0.74 -2710 0.70 -457 0.97 -2445 0.82 -3407 0.85 -2550 0.76 -583 0.75 -345 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.81 -1172 0.86 -3725 0.74 -2708 0.70 -458 0.97 -2375 0.82 -3378 0.85 -2480 0.76 -576 0.75 -341 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.81 -1184 0.87 -3916 0.73 -2727 0.70 -458 0.97 -3199 0.82 -3454 0.84 -2595 0.75 -594 0.75 -350 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.81 -1153 0.87 -4072 0.74 -2691 0.70 -458 0.97 -2409 0.82 -3374 0.84 -2532 0.75 -595 0.75 -347 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.81 -1173 0.88 -3920 0.74 -2759 0.70 -467 0.97 -2436 0.82 -3477 0.85 -2536 0.75 -592 0.75 -352 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.81 -1083 0.87 -3684 0.74 -2692 0.70 -458 0.98 -2335 0.82 -3413 0.85 -2477 0.76 -574 0.76 -329 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.81 -1179 0.89 -3381 0.74 -2763 0.70 -466 0.98 -2206 0.83 -3429 0.85 -2430 0.76 -572 0.75 -337 Page 168 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.82 -1142 0.87 -3594 0.74 -2640 0.70 -454 0.98 -1991 0.84 -3168 0.86 -2259 0.76 -571 0.75 -332 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.82 -1141 0.87 -3561 0.74 -2651 0.70 -455 0.98 -2048 0.84 -3225 0.86 -2306 0.76 -565 0.76 -329 BF 5266 SLATT-BUCKLY 500 KV 0.82 -1134 0.89 -3825 0.74 -2581 0.70 -447 0.98 -1986 0.84 -3071 0.86 -2222 0.76 -585 0.75 -342 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.81 -1184 0.86 -4033 0.73 -2731 0.70 -458 0.97 -2546 0.82 -3464 0.84 -2612 0.75 -596 0.75 -351 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.81 -1174 0.84 -3922 0.73 -2725 0.70 -458 0.97 -2480 0.81 -3439 0.84 -2564 0.75 -588 0.75 -348 BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.87 -709 0.91 -3444 0.73 -1977 0.70 -490 0.98 -2300 0.86 -2377 0.89 -1914 0.80 -440 0.77 -245 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.86 -905 0.87 -4234 0.71 -1910 0.70 -467 0.97 -3215 0.82 -3167 0.84 -2599 0.76 -580 0.75 -338 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.88 -652 0.87 -4205 0.70 -1824 0.70 -502 0.97 -3233 0.82 -3120 0.85 -2581 0.78 -492 0.76 -287 BF IPC POPULUS-CHILL-HEMINGWAY 500 KV & HEM 500/230 XFMR 0.86 -956 0.87 -4272 0.70 -2399 0.70 -457 0.97 -3258 0.82 -3398 0.84 -2640 0.75 -596 0.75 -346 BF LOLO 230KV 0.82 -1174 0.88 -4050 0.73 -2719 0.70 -463 0.97 -2396 0.82 -3304 0.85 -2515 0.76 -583 0.75 -335 BF MCNARY 230 KV SECT 1 0.81 -1212 0.87 -4098 0.73 -2815 0.70 -465 0.97 -2704 0.81 -3676 0.83 -2725 0.75 -603 0.75 -362 BF MCNARY 230 KV SECT 2 0.81 -1198 0.87 -4152 0.73 -2770 0.70 -462 0.97 -3301 0.80 -3606 0.96 -1952 0.75 -604 0.75 -359 BF MCNARY 230 KV SECT 3 0.81 -1184 0.88 -3994 0.73 -2746 0.70 -460 0.97 -3200 0.82 -3500 0.84 -2593 0.75 -604 0.75 -358 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.845 -844 0.93 -2916 0.79 -1877 0.70 -485 0.98 -1886 0.88 -2002 0.90 -1463 0.80 -422 0.78 -234 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV+PTSN 0.846 -850 0.93 -2938 0.78 -1892 0.70 -485 0.98 -1902 0.88 -2045 0.90 -1478 0.81 -437 0.78 -239 BF PGE GRASSLAND-COYOTE SP 500KV & CARTY GAS PLANT 0.813 -1160 0.88 -4088 0.74 -2690 0.70 -461 0.97 -3051 0.82 -3325 0.84 -2490 0.76 -593 0.76 -345 BF PGE GRASSLAND-SLATT 500KV & BOARDMAN PLANT 0.815 -1182 0.88 -3942 0.73 -2754 0.70 -467 0.97 -3126 0.81 -3553 0.84 -2605 0.75 -594 0.75 -357 BUS: ALVEY 500 KV + RAS 0.81 -1171 0.88 -4318 0.73 -2742 0.70 -458 0.97 -2619 0.88 -2704 0.82 -2621 0.74 -620 0.75 -377 BUS: BELL BPA 500 KV 0.81 -1184 0.87 -4090 0.73 -2731 0.70 -458 0.97 -2568 0.81 -3462 0.84 -2635 0.78 -537 0.75 -359 BUS: BUCKLEY 500 KV 0.82 -1109 0.90 -3554 0.74 -2504 0.70 -443 0.98 -2384 0.84 -2797 0.85 -1876 0.76 -578 0.75 -336 BUS: DIXONVILLE 500 KV 0.82 -1119 0.88 -4024 0.74 -2533 0.70 -441 0.97 -2917 0.86 -2498 0.85 -2346 0.76 -577 0.75 -334 BUS: HOT SPRINGS 500 KV 0.81 -1183 0.87 -4218 0.73 -2726 0.70 -458 0.97 -2584 0.81 -3477 0.84 -2655 0.76 -573 0.75 -350 BUS: KEELER 500 KV + RAS 0.81 -1220 0.92 -3336 0.73 -2965 0.70 -481 0.98 -2414 0.83 -3816 0.85 -2309 0.73 -625 0.74 -395 BUS: ROCK CREEK 500 KV 0.82 -1140 0.88 -3561 0.74 -2647 0.70 -455 0.98 -1987 0.84 -3198 0.86 -2284 0.76 -564 0.76 -329 BUS: SICKLER 500 KV 0.81 -1181 0.88 -3866 0.73 -2729 0.70 -458 0.97 -2542 0.82 -3471 0.84 -2609 0.75 -596 0.75 -352 BUS: SUMMER LAKE 500 KV 0.84 -1017 0.89 -3745 0.75 -1835 0.70 -444 0.98 -1887 0.82 -2439 0.87 -2096 0.77 -549 0.76 -316 N-1: ALLSTON-KEELER 500 KV + RAS 0.81 -1222 0.90 -3545 0.73 -2980 0.70 -481 0.97 -3463 0.82 -4100 0.84 -2610 0.73 -625 0.74 -395 N-1: ALLSTON-NAPAVINE 500 KV 0.81 -1175 0.88 -4034 0.73 -2703 0.70 -457 0.97 -2384 0.82 -3359 0.85 -2454 0.75 -595 0.75 -350 N-1: ALLSTON-PAUL #2 500 KV 0.81 -1174 0.88 -4039 0.73 -2703 0.70 -457 0.97 -3060 0.82 -3359 0.85 -2457 0.75 -595 0.75 -349 N-1: ALVERY-DIXONVILLE 500 KV 0.82 -1118 0.88 -3995 0.74 -2525 0.70 -441 0.97 -2868 0.87 -2363 0.85 -2373 0.76 -577 0.75 -334 N-1: ALVEY-MARION 500 KV 0.82 -1130 0.89 -3880 0.74 -2555 0.70 -445 0.97 -2774 0.86 -2586 0.85 -2253 0.76 -582 0.75 -339 N-1: ASHE-HANFORD 500 KV 0.81 -1182 0.84 -3881 0.73 -2729 0.70 -458 0.97 -2530 0.82 -3448 0.84 -2584 0.75 -595 0.75 -350 N-1: ASHE-LOW MON 500 KV 0.81 -1176 0.87 -4079 0.73 -2720 0.70 -457 0.97 -2532 0.82 -3454 0.84 -2602 0.75 -601 0.75 -351 N-1: ASHE-MARION 500 KV 0.82 -1141 0.88 -3664 0.74 -2617 0.70 -452 0.98 -1910 0.85 -3019 0.85 -2094 0.76 -580 0.75 -339 N-1: ASHE-SLATT 500 KV 0.81 -1149 0.87 -3628 0.74 -2688 0.70 -458 0.98 -2174 0.83 -3280 0.85 -2393 0.76 -568 0.76 -329 N-1: BELL-COULEE 500 KV 0.81 -1182 0.87 -4168 0.73 -2726 0.70 -458 0.97 -2577 0.81 -3470 0.84 -2643 0.77 -548 0.75 -348 N-1: BELL-TAFT 500 KV 0.81 -1186 0.87 -4182 0.73 -2733 0.70 -458 0.97 -3247 0.81 -3459 0.84 -2636 0.77 -548 0.75 -363 N-1: BIG EDDY-CELILO 500 KV 0.81 -1185 0.87 -4274 0.73 -2731 0.70 -458 0.97 -3265 0.81 -3478 0.84 -2658 0.75 -606 0.75 -355 N-1: BIG EDDY-JOHN DAY 500 KV 0.81 -1186 0.87 -4234 0.73 -2729 0.70 -458 0.96 -3273 0.82 -3458 0.84 -2624 0.75 -607 0.75 -356 N-1: BIG EDDY-KNIGHT 500 KV 0.81 -1171 0.88 -4043 0.73 -2700 0.70 -457 0.98 -2249 0.82 -3386 0.84 -2531 0.75 -594 0.75 -347 N-1: BIG EDDY-OSTRANDER 500 KV 0.81 -1183 0.87 -4208 0.73 -2720 0.70 -457 0.98 -2348 0.81 -3428 0.83 -2563 0.75 -606 0.75 -356 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.81 -1107 0.87 -4227 0.74 -2617 0.70 -458 0.97 -2552 0.81 -3440 0.84 -2620 0.75 -601 0.75 -352 N-1: BRADY-ANTELOPE 230 KV 0.81 -1182 0.87 -4257 0.74 -2716 0.70 -458 0.97 -3258 0.81 -3469 0.84 -2644 0.75 -565 0.75 -352 N-1: BROADVIEW-GARRISON #1 500 KV 0.81 -1189 0.87 -4239 0.74 -2731 0.70 -458 0.97 -2609 0.81 -3499 0.84 -2670 0.81 -470 0.78 -278 Page 169 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: BROWNLEE-ONTARIO 230 KV 0.82 -1073 0.87 -4201 0.75 -2517 0.70 -457 0.97 -3204 0.82 -3422 0.84 -2604 0.75 -599 0.75 -350 N-1: BUCKLEY-GRIZZLY 500 KV 0.82 -1137 0.88 -3983 0.74 -2598 0.70 -449 0.97 -2196 0.82 -3129 0.85 -2351 0.76 -584 0.75 -340 N-1: BUCKLEY-MARION 500 KV 0.81 -1177 0.88 -4116 0.73 -2692 0.70 -456 0.97 -2401 0.82 -3333 0.81 -2260 0.75 -604 0.75 -355 N-1: BUCKLEY-SLATT 500 KV 0.82 -1134 0.89 -3825 0.74 -2581 0.70 -447 0.98 -1986 0.84 -3071 0.86 -2220 0.76 -585 0.75 -342 N-1: CAPTAIN JACK-OLINDA 500 KV 0.83 -1105 0.89 -3862 0.74 -2426 0.70 -429 0.97 -2100 0.82 -2324 0.87 -2198 0.76 -570 0.76 -329 N-1: CAPTJACK-KFALLS 500 KV 0.82 -1136 0.87 -4189 0.74 -2572 0.70 -447 0.97 -3071 0.74 -3267 0.88 -2441 0.76 -584 0.75 -340 N-1: CASCADE CROSSING 500 KV 0.82 -1165 0.89 -3892 0.73 -2640 0.70 -451 0.98 -2091 0.84 -3117 0.85 -2113 0.75 -603 0.75 -354 N-1: CHIEF JO-COULEE 500 KV 0.81 -1185 0.87 -4172 0.73 -2733 0.70 -458 0.97 -2591 0.81 -3479 0.84 -2656 0.75 -606 0.75 -356 N-1: CHIEF JO-MONROE 500 KV 0.81 -1182 0.87 -4028 0.73 -2726 0.70 -458 0.97 -3225 0.81 -3463 0.84 -2617 0.75 -601 0.75 -353 N-1: CHIEF JO-SICKLER 500 KV 0.81 -1183 0.87 -4052 0.73 -2728 0.70 -458 0.97 -2571 0.81 -3473 0.84 -2637 0.75 -597 0.75 -351 N-1: COULEE-HANFORD 500 KV 0.81 -1175 0.86 -3652 0.74 -2722 0.70 -458 0.97 -3134 0.83 -3435 0.85 -2541 0.76 -561 0.75 -334 N-1: COULEE-SCHULTZ 500 KV 0.81 -1178 0.88 -3874 0.73 -2718 0.70 -458 0.97 -3181 0.82 -3453 0.84 -2589 0.76 -585 0.75 -345 N-1: COVINGTON4-RAVER 500 KV 0.81 -1186 0.87 -4252 0.73 -2733 0.70 -458 0.97 -2598 0.81 -3483 0.84 -2658 0.75 -607 0.75 -356 N-1: COVINGTON5-RAVER 500 KV 0.81 -1186 0.87 -4250 0.73 -2733 0.70 -458 0.97 -3276 0.81 -3483 0.84 -2657 0.75 -607 0.75 -356 N-1: COYOTE-LONGHORN 500 KV 0.81 -1171 0.87 -4185 0.73 -2721 0.70 -460 0.97 -3185 0.82 -3431 0.84 -2596 0.75 -598 0.75 -349 N-1: CUSTERW-MONROE 500 KV 0.81 -1184 0.88 -4075 0.73 -2732 0.70 -458 0.97 -2587 0.81 -3487 0.84 -2643 0.75 -596 0.75 -353 N-1: DIXONVILLE-MERIDIAN 500 KV 0.82 -1130 0.88 -4043 0.74 -2564 0.70 -444 0.97 -2954 0.84 -2701 0.84 -2381 0.76 -582 0.75 -338 N-1: DRYCREEK-LOLO 230 KV 0.81 -1184 0.87 -4275 0.73 -2731 0.70 -458 0.97 -2592 0.81 -3479 0.84 -2659 0.75 -606 0.75 -355 N-1: DRYCREEK-N LEWISTON 230 KV 0.81 -1186 0.87 -4268 0.73 -2732 0.70 -458 0.97 -3266 0.81 -3476 0.84 -2657 0.75 -605 0.75 -355 N-1: DRYCREEK-WALA AVA 230 KV 0.81 -1186 0.87 -4263 0.73 -2731 0.70 -458 0.97 -3266 0.81 -3476 0.84 -2656 0.75 -604 0.75 -354 N-1: DWORSHAK-HATWAI 500 KV + RAS 0.81 -1219 0.89 -3748 0.74 -2740 0.70 -459 0.97 -3241 0.82 -3510 0.84 -2617 0.77 -549 0.77 -270 N-1: DWORSHAK-HATWAI 500 KV + RAS+PTSN 0.81 -1223 0.89 -3764 0.74 -2758 0.70 -459 0.97 -3253 0.81 -3519 0.84 -2625 0.77 -561 0.77 -274 N-1: DWORSHAK-TAFT 500 KV 0.81 -1211 0.87 -3945 0.74 -2739 0.70 -459 0.97 -2584 0.81 -3506 0.84 -2635 0.80 -464 0.77 -282 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.81 -1186 0.87 -4157 0.73 -2734 0.70 -458 0.97 -3251 0.81 -3477 0.84 -2638 0.75 -607 0.75 -356 N-1: ECHO LAKE-RAVER 500 KV 0.81 -1183 0.87 -4171 0.73 -2728 0.70 -458 0.97 -3252 0.81 -3475 0.84 -2633 0.75 -602 0.75 -354 N-1: ECHO LAKE-SCHULTZ 500 KV 0.81 -1183 0.87 -4082 0.73 -2726 0.70 -458 0.97 -3221 0.81 -3459 0.84 -2616 0.75 -604 0.75 -355 N-1: ECHO LAKE-SNOK TAP 500 KV 0.81 -1182 0.88 -3943 0.73 -2728 0.70 -458 0.97 -2544 0.82 -3470 0.84 -2614 0.75 -592 0.75 -351 N-1: GARRISON-TAFT #2 500 KV 0.81 -1188 0.87 -4281 0.73 -2736 0.70 -458 0.97 -2609 0.81 -3493 0.84 -2669 0.76 -576 0.75 -345 N-1: GOLDHILL-PLACER 115 KV 0.81 -1189 0.87 -4317 0.73 -2740 0.70 -459 0.97 -3308 0.82 -3528 0.84 -2682 0.75 -608 0.75 -356 N-1: GRASSLAND-COYOTE 500 KV 0.81 -1160 0.88 -4091 0.74 -2689 0.70 -461 0.97 -2376 0.82 -3324 0.85 -2486 0.75 -593 0.75 -346 N-1: GRASSLAND-SLATT 500 KV 0.81 -1183 0.87 -4230 0.73 -2696 0.70 -458 0.97 -3216 0.81 -3456 0.84 -2630 0.75 -604 0.75 -354 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.82 -1118 0.89 -3876 0.74 -2541 0.70 -447 0.97 -2732 0.83 -2908 0.86 -2252 0.76 -575 0.75 -333 N-1: GRIZZLY-MALIN 500 KV 0.83 -1107 0.89 -3828 0.74 -2483 0.70 -436 0.98 -2631 0.82 -2737 0.87 -2158 0.76 -575 0.75 -333 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.83 -1069 0.89 -3854 0.74 -2415 0.70 -453 0.97 -2065 0.83 -2840 0.86 -2200 0.77 -552 0.76 -318 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.83 -1104 0.89 -3807 0.74 -2472 0.70 -435 0.98 -2608 0.82 -2700 0.87 -2137 0.76 -574 0.75 -333 N-1: GRIZZLY-ROUND BU 500 KV 0.81 -1184 0.86 -4241 0.73 -2723 0.70 -458 0.97 -3226 0.81 -3462 0.84 -2637 0.75 -606 0.75 -355 N-1: HANFORD-LOW MON 500 KV 0.81 -1182 0.86 -4035 0.73 -2724 0.70 -458 0.97 -2546 0.81 -3456 0.84 -2619 0.75 -602 0.75 -354 N-1: HANFORD-VANTAGE 500 KV 0.81 -1174 0.84 -3920 0.73 -2725 0.70 -458 0.97 -3159 0.81 -3439 0.84 -2564 0.75 -588 0.75 -348 N-1: HANFORD-WAUTOMA 500 KV 0.81 -1181 0.86 -4162 0.73 -2723 0.70 -458 0.97 -3221 0.81 -3460 0.84 -2616 0.75 -603 0.75 -353 N-1: HATWAI 500/230 KV XFMR + RAS 0.82 -1202 0.87 -4204 0.73 -2746 0.70 -460 0.97 -2541 0.82 -3432 0.84 -2613 0.75 -607 0.75 -350 N-1: HATWAI-LOLO 230 KV 0.81 -1188 0.87 -4232 0.73 -2734 0.70 -459 0.97 -3246 0.81 -3460 0.84 -2638 0.75 -603 0.75 -353 N-1: HATWAI-LOW GRAN 500 KV 0.81 -1122 0.87 -4015 0.74 -2700 0.70 -457 0.97 -3326 0.81 -3569 0.84 -2685 0.78 -520 0.76 -303 N-1: HATWAI-N LEWISTON 230 KV 0.81 -1186 0.87 -4268 0.73 -2732 0.70 -458 0.97 -2589 0.81 -3477 0.84 -2657 0.75 -605 0.75 -355 N-1: HELLS CANYON-BROWNLEE 230 KV 0.81 -1057 0.88 -3979 0.74 -2608 0.70 -466 0.97 -3012 0.82 -3247 0.85 -2456 0.76 -575 0.75 -336 Page 170 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: HELLS CANYON-WALLA WALLA 230 KV 0.82 -1205 0.87 -4142 0.73 -2736 0.70 -460 0.97 -2481 0.82 -3379 0.84 -2567 0.75 -596 0.75 -349 N-1: HEMINGWAY-GRASSLAND 500 KV 0.84 -867 0.91 -3446 0.78 -1938 0.70 -488 0.98 -1639 0.85 -2387 0.89 -1913 0.80 -452 0.77 -247 N-1: HEMINGWAY-GRASSLAND 500 KV + FACRI 0.82 -1071 0.86 -4464 0.74 -2348 0.70 -504 0.97 -3720 0.84 -4124 0.82 -2973 0.76 -552 0.76 -318 N-1: HEMINGWAY-GRASSLAND 500 KV + PTSN SHUNT 0.83 -923 0.90 -3510 0.78 -2073 0.70 -496 0.98 -1703 0.85 -2470 0.88 -1972 0.80 -469 0.77 -254 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.83 -1079 0.87 -4226 0.74 -1970 0.70 -466 0.97 -2518 0.82 -3147 0.84 -2586 0.76 -578 0.75 -335 N-1: HILL TOP 345/230 XFMR 0.82 -1161 0.87 -4264 0.74 -2635 0.70 -375 0.97 -3269 0.82 -3400 0.84 -2660 0.75 -598 0.75 -350 N-1: HORSE HV-MCNARY 230 KV 0.81 -1177 0.87 -4211 0.73 -2719 0.70 -457 0.97 -3225 0.81 -3457 0.84 -2616 0.75 -605 0.75 -355 N-1: HOT SPRINGS-TAFT 500 KV 0.81 -1183 0.87 -4218 0.73 -2726 0.70 -458 0.97 -2584 0.81 -3477 0.84 -2655 0.76 -573 0.75 -350 N-1: HUMBOLDT-COYOTE CK 345 KV 0.81 -1240 0.87 -4175 0.74 -2755 0.70 -208 0.97 -3132 0.82 -3188 0.85 -2526 0.75 -616 0.75 -361 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.81 -1196 0.87 -4304 0.73 -2760 0.70 -456 0.97 -2603 0.81 -3467 0.84 -2664 0.75 -612 0.75 -360 N-1: ING500-CUSTERW 500 KV 0.81 -1185 0.87 -4216 0.73 -2732 0.70 -458 0.97 -3269 0.81 -3482 0.84 -2656 0.75 -602 0.75 -354 N-1: JOHN DAY-MARION 500 KV 0.81 -1174 0.87 -4084 0.73 -2690 0.70 -456 0.97 -3004 0.82 -3288 0.82 -2253 0.75 -602 0.75 -353 N-1: JOHN DAY-ROCK CK 500 KV 0.82 -1144 0.88 -3698 0.74 -2655 0.70 -455 0.98 -2050 0.84 -3232 0.86 -2331 0.76 -569 0.76 -330 N-1: JOHN DAY-SLATT 500 KV 0.82 -1170 0.87 -4079 0.73 -2663 0.70 -453 0.97 -2246 0.82 -3398 0.84 -2531 0.75 -604 0.75 -354 N-1: KFALLS-MERIDIAN 500 KV 0.81 -1174 0.88 -4134 0.73 -2695 0.70 -455 0.97 -2459 0.79 -3504 0.91 -1742 0.75 -602 0.75 -352 N-1: KNIGHT-WAUTOMA 500 KV 0.82 -1144 0.87 -3655 0.74 -2645 0.70 -454 0.98 -2015 0.84 -3182 0.86 -2278 0.76 -573 0.75 -333 N-1: LAGRANDE-NORTH POWDER 230 KV 0.82 -1129 0.87 -4227 0.73 -2713 0.70 -460 0.97 -2537 0.82 -3417 0.84 -2610 0.75 -600 0.75 -351 N-1: LANES-MARION 500 KV 0.81 -1175 0.88 -4122 0.73 -2694 0.70 -456 0.97 -2407 0.83 -3255 0.84 -2433 0.75 -602 0.75 -353 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.81 -1183 0.87 -4254 0.73 -2729 0.70 -458 0.97 -2582 0.81 -3475 0.84 -2646 0.75 -604 0.75 -354 N-1: LIT GOOSE-LOW MON 500 KV 0.81 -1182 0.87 -4223 0.73 -2727 0.70 -458 0.97 -3248 0.81 -3470 0.84 -2640 0.75 -603 0.75 -353 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.81 -1181 0.87 -4237 0.73 -2728 0.70 -458 0.97 -3257 0.81 -3476 0.84 -2644 0.75 -601 0.75 -352 N-1: LOW MON-SAC TAP 500 KV 0.81 -1172 0.87 -3800 0.74 -2718 0.70 -458 0.97 -3108 0.82 -3399 0.84 -2525 0.76 -579 0.75 -332 N-1: MALIN 500/230 XFMR 0.82 -1171 0.87 -4203 0.74 -2677 0.70 -420 0.97 -3200 0.83 -3343 0.84 -2516 0.75 -602 0.75 -353 N-1: MALIN-HILLTOP 230 KV 0.82 -1155 0.87 -4215 0.74 -2618 0.70 -373 0.97 -3225 0.82 -3375 0.84 -2614 0.75 -596 0.75 -349 N-1: MALIN-ROUND MTN #1 500 KV 0.82 -1152 0.87 -4095 0.74 -2594 0.70 -445 0.97 -3028 0.82 -2863 0.85 -2425 0.75 -591 0.75 -345 N-1: MALIN-ROUND MTN #2 500 KV 0.82 -1151 0.87 -4087 0.74 -2587 0.70 -444 0.97 -2339 0.82 -2835 0.86 -2413 0.75 -591 0.75 -344 N-1: MALIN-SUMMER LAKE 500 KV 0.82 -1181 0.88 -4046 0.74 -2548 0.70 -430 0.97 -2301 0.80 -2891 0.85 -2365 0.75 -606 0.75 -356 N-1: MAPLE VLY-ROCKY RH 345 KV 0.81 -1184 0.87 -4139 0.73 -2730 0.70 -458 0.97 -3251 0.81 -3474 0.84 -2639 0.75 -605 0.75 -355 N-1: MARION-PEARL 500 KV 0.81 -1174 0.87 -4125 0.74 -2680 0.70 -456 0.97 -3056 0.84 -3093 0.80 -1908 0.75 -600 0.75 -352 N-1: MARION-SANTIAM 500 KV 0.81 -1190 0.86 -4343 0.73 -2750 0.70 -459 0.97 -2694 0.81 -3566 0.83 -2746 0.75 -608 0.75 -356 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.81 -1185 0.87 -4266 0.73 -2732 0.70 -458 0.97 -2578 0.81 -3466 0.84 -2629 0.75 -606 0.75 -356 N-1: MCNARY 500/230 KV XFMR 0.81 -1125 0.87 -4269 0.73 -2724 0.70 -458 0.97 -2621 0.81 -3525 0.83 -2674 0.75 -607 0.75 -356 N-1: MCNARY S2-MCNARY S3 230 KV 0.81 -1184 0.87 -4249 0.73 -2730 0.70 -458 0.97 -2592 0.81 -3480 0.84 -2658 0.75 -606 0.75 -356 N-1: MCNARY-BOARD T1 230 KV 0.81 -1179 0.87 -4276 0.73 -2712 0.70 -457 0.97 -3241 0.81 -3434 0.84 -2634 0.75 -605 0.75 -353 N-1: MCNARY-JOHN DAY 500 KV 0.82 -1152 0.88 -3995 0.73 -2657 0.70 -454 0.97 -2887 0.83 -3309 0.85 -2450 0.75 -598 0.75 -350 N-1: MCNARY-LONGHORN 500 KV 0.81 -1156 0.87 -4135 0.74 -2718 0.70 -460 0.97 -2491 0.81 -3427 0.84 -2580 0.75 -595 0.75 -346 N-1: MCNARY-ROSS 345 KV 0.81 -1174 0.87 -4177 0.73 -2713 0.70 -457 0.97 -2496 0.81 -3426 0.84 -2571 0.75 -606 0.75 -355 N-1: MCNARY-ROUNDUP 230 KV 0.85 -1020 0.87 -4176 0.74 -2656 0.70 -461 0.97 -2471 0.81 -3351 0.84 -2560 0.75 -592 0.75 -346 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.81 -1170 0.88 -3738 0.74 -2708 0.70 -458 0.97 -2380 0.82 -3369 0.85 -2481 0.76 -578 0.75 -332 N-1: MIDPOINT-HEMINGWAY 500 KV 0.84 -1046 0.87 -4211 0.70 -2143 0.70 -486 0.97 -3186 0.82 -3186 0.85 -2562 0.77 -527 0.76 -303 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN SHUNT 0.84 -1051 0.87 -4230 0.70 -2151 0.70 -486 0.97 -3199 0.82 -3197 0.84 -2571 0.77 -540 0.76 -306 N-1: MIDPOINT-HUMBOLDT 345 KV 0.81 -1242 0.87 -4143 0.73 -2779 0.70 -305 0.97 -3092 0.82 -3123 0.85 -2497 0.75 -616 0.75 -361 N-1: NAPAVINE-PAUL 500 KV 0.81 -1179 0.87 -4162 0.73 -2719 0.70 -457 0.97 -2504 0.82 -3440 0.84 -2589 0.75 -600 0.75 -352 N-1: OLYMPIA-PAUL 500 KV 0.81 -1187 0.87 -4315 0.73 -2736 0.70 -458 0.97 -2627 0.81 -3514 0.84 -2683 0.75 -607 0.75 -356 Page 171 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: ONTARIO-CALDWELL 230 KV 0.82 -1143 0.86 -4230 0.74 -2619 0.70 -457 0.97 -2557 0.81 -3443 0.84 -2623 0.75 -602 0.75 -353 N-1: OSTRANDER-KNIGHT 500 KV 0.81 -1178 0.87 -4130 0.73 -2707 0.70 -457 0.98 -2989 0.82 -3367 0.84 -2488 0.75 -603 0.75 -354 N-1: OSTRANDER-PEARL 500 KV 0.81 -1184 0.87 -4256 0.73 -2726 0.70 -458 0.98 -2378 0.81 -3484 0.83 -2625 0.75 -606 0.75 -355 N-1: OSTRANDER-TROUTDALE 500 KV 0.81 -1187 0.87 -4232 0.73 -2734 0.70 -458 0.97 -2565 0.81 -3466 0.84 -2613 0.75 -607 0.75 -356 N-1: OXBOW-BROWNLEE #2 230 KV 0.81 -1171 0.87 -4270 0.73 -2722 0.70 -458 0.97 -2585 0.81 -3473 0.84 -2655 0.75 -605 0.75 -354 N-1: OXBOW-LOLO 230 KV 0.82 -1164 0.88 -4056 0.73 -2713 0.70 -463 0.97 -3078 0.82 -3303 0.85 -2515 0.76 -583 0.75 -335 N-1: PAUL-SATSOP 500 KV 0.81 -1184 0.87 -4207 0.73 -2729 0.70 -458 0.97 -2562 0.81 -3463 0.84 -2617 0.75 -605 0.75 -355 N-1: PEARL-KEELER 500 KV 0.81 -1171 0.88 -3964 0.73 -2689 0.70 -457 0.98 -2876 0.83 -3259 0.85 -2297 0.75 -591 0.75 -347 N-1: PEARL-KEELER 500 KV + RAS 0.81 -1196 0.88 -3843 0.73 -2818 0.70 -467 0.98 -2412 0.82 -3610 0.84 -2468 0.74 -603 0.75 -367 N-1: PINTO-FOUR CORNER 345 KV 0.81 -1188 0.87 -4272 0.73 -2736 0.70 -456 0.97 -2583 0.81 -3453 0.84 -2653 0.75 -607 0.75 -357 N-1: PONDEROSA A 500/230 KV XFMR 0.81 -1186 0.87 -4275 0.73 -2731 0.70 -458 0.97 -2590 0.81 -3473 0.84 -2658 0.75 -606 0.75 -356 N-1: PONDEROSA B 500/230 KV XFMR 0.81 -1184 0.87 -4277 0.73 -2730 0.70 -458 0.97 -3271 0.81 -3478 0.84 -2660 0.75 -606 0.75 -355 N-1: RAVER-PAUL 500 KV 0.81 -1160 0.89 -3622 0.74 -2672 0.70 -456 0.98 -2162 0.83 -3305 0.85 -2456 0.76 -579 0.75 -340 N-1: RAVER-TACOMA 500 KV 0.81 -1185 0.87 -4182 0.73 -2731 0.70 -458 0.97 -2575 0.81 -3475 0.84 -2639 0.75 -605 0.75 -355 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.81 -1194 0.86 -4232 0.73 -2759 0.70 -452 0.97 -3230 0.81 -3396 0.84 -2616 0.75 -611 0.75 -361 N-1: ROBINSON-HARRY ALLEN 500 KV 0.82 -1163 0.87 -4278 0.74 -2626 0.70 -368 0.97 -3279 0.81 -3498 0.84 -2665 0.75 -602 0.75 -353 N-1: ROCK CK-WAUTOMA 500 KV 0.82 -1144 0.88 -3622 0.74 -2656 0.70 -455 0.98 -2744 0.84 -3237 0.86 -2322 0.76 -566 0.76 -329 N-1: ROUND MTN-TABLE MTN 500 KV 0.82 -1163 0.87 -4160 0.74 -2647 0.70 -449 0.97 -2460 0.82 -3109 0.85 -2537 0.75 -595 0.75 -348 N-1: ROUNDUP-LAGRANDE 230 KV 0.82 -1110 0.87 -4196 0.73 -2703 0.70 -461 0.97 -3173 0.82 -3386 0.84 -2580 0.75 -596 0.75 -349 N-1: SCHULTZ-SICKLER 500 KV 0.81 -1182 0.88 -3975 0.73 -2729 0.70 -458 0.97 -2549 0.81 -3473 0.84 -2614 0.75 -596 0.75 -352 N-1: SCHULTZ-VANTAGE 500 KV 0.81 -1186 0.86 -4031 0.73 -2732 0.70 -458 0.97 -2556 0.81 -3466 0.84 -2618 0.75 -597 0.75 -351 N-1: SCHULTZ-WAUTOMA 500 KV 0.81 -1174 0.86 -3822 0.73 -2712 0.70 -458 0.97 -2402 0.82 -3390 0.85 -2507 0.76 -579 0.75 -342 N-1: SIGURD-GLEN CANYON 230 KV 0.81 -1184 0.87 -4277 0.73 -2726 0.70 -458 0.97 -3273 0.81 -3480 0.84 -2661 0.75 -606 0.75 -355 N-1: SLATT 500/230 KV XFMR 0.81 -1195 0.87 -3955 0.73 -2816 0.70 -467 0.97 -2598 0.81 -3659 0.84 -2660 0.75 -599 0.75 -362 N-1: SLATT-LONGHORN 500 KV 0.81 -1174 0.87 -4168 0.73 -2705 0.70 -457 0.97 -3149 0.81 -3415 0.84 -2576 0.75 -604 0.75 -354 N-1: SNOK TAP-SNOKING 500 KV 0.81 -1185 0.87 -4231 0.73 -2732 0.70 -458 0.97 -3271 0.81 -3482 0.84 -2656 0.75 -606 0.75 -355 N-1: TABLE MTN-TESLA 500 KV 0.82 -1163 0.87 -4178 0.74 -2655 0.70 -451 0.97 -2493 0.82 -3173 0.84 -2564 0.75 -595 0.75 -347 N-1: TABLE MTN-VACA DIXON 500 KV 0.82 -1152 0.88 -4125 0.74 -2610 0.70 -447 0.97 -2416 0.82 -2941 0.85 -2504 0.75 -589 0.75 -343 N-1: VANTAGE 500/230 KV XFMR #1 0.81 -1184 0.87 -4291 0.73 -2731 0.70 -458 0.97 -2586 0.81 -3478 0.84 -2657 0.75 -606 0.75 -355 N-1: VANTAGE 500/230 KV XFMR #2 0.81 -1184 0.87 -4291 0.73 -2731 0.70 -458 0.97 -3264 0.81 -3478 0.84 -2657 0.75 -606 0.75 -355 N-1: WALLA WALLA-TALBOT 230 KV 0.81 -1192 0.87 -4220 0.73 -2729 0.70 -458 0.97 -3250 0.81 -3469 0.84 -2640 0.75 -599 0.75 -351 N-1: WALLA WALLA-WALLULA 230 KV 0.82 -1165 0.87 -4262 0.73 -2730 0.70 -458 0.97 -3267 0.81 -3474 0.84 -2657 0.75 -605 0.75 -355 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.82 -1084 0.89 -2886 0.75 -2536 0.70 -452 0.98 -2125 0.88 -2664 0.89 -1733 0.78 -521 0.76 -301 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.82 -1128 0.90 -3433 0.74 -2567 0.70 -449 0.98 -1674 0.86 -2781 0.83 -1697 0.76 -578 0.75 -338 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.83 -1066 0.92 -2992 0.74 -2400 0.70 -439 0.98 -1276 0.89 -2416 0.89 -1575 0.77 -551 0.76 -320 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.82 -1127 0.89 -3539 0.74 -2583 0.70 -451 0.98 -1788 0.85 -2926 0.86 -2011 0.76 -578 0.75 -337 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.82 -1120 0.89 -3441 0.74 -2533 0.70 -447 0.98 -1612 0.86 -2900 0.86 -1958 0.76 -576 0.75 -337 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.82 -1113 0.88 -3388 0.74 -2613 0.70 -454 0.98 -1821 0.85 -3056 0.87 -2160 0.76 -557 0.76 -323 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.82 -1131 0.88 -3504 0.74 -2649 0.70 -456 0.98 -2012 0.84 -3168 0.86 -2270 0.76 -561 0.76 -325 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.81 -1237 0.88 -4109 0.74 -2797 0.70 -465 0.97 -2826 0.80 -3762 0.83 -2823 0.87 -274 0.78 -218 N-2: BETHEL-CEDAR SP 500KV & BETHEL-ROUND BUTTE 230 KV 0.814 -1175 0.88 -4053 0.73 -2674 0.70 -453 0.98 -2936 0.83 -3287 0.84 -2202 0.75 -607 0.75 -356 N-2: BETHEL-CEDAR SP 500KV & BETHEL-SANTIAM 230KV 0.814 -1174 0.88 -4061 0.73 -2672 0.70 -453 0.98 -2939 0.83 -3291 0.84 -2277 0.75 -606 0.75 -356 N-2: BETHEL-CEDAR SP 500KV & SANTIAM-MIKKALO 500KV 0.814 -1168 0.89 -3911 0.73 -2648 0.70 -451 0.98 -2814 0.83 -3143 0.85 -2122 0.75 -603 0.75 -354 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.81 -1182 0.87 -4178 0.73 -2714 0.70 -457 0.98 -2996 0.82 -3382 0.83 -2494 0.75 -605 0.75 -355 Page 172 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.81 -1183 0.87 -4201 0.73 -2718 0.70 -457 0.98 -2352 0.81 -3419 0.83 -2539 0.75 -606 0.75 -356 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.79 -893 0.87 -4124 0.77 -2270 0.70 -459 0.97 -2412 0.82 -3289 0.85 -2523 0.75 -585 0.75 -339 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.79 -892 0.87 -4122 0.77 -2264 0.70 -459 0.97 -2409 0.82 -3285 0.85 -2521 0.75 -584 0.75 -339 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.82 -1147 0.87 -4195 0.75 -2413 0.70 -457 0.97 -2533 0.82 -3420 0.84 -2607 0.74 -608 0.74 -381 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.83 -1118 0.87 -4154 0.78 -2112 0.70 -451 0.97 -3171 0.82 -3380 0.84 -2577 0.74 -580 0.74 -385 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.81 -1197 0.88 -4309 0.72 -2853 0.70 -483 0.97 -2974 0.80 -3967 0.82 -2941 0.70 -579 0.82 -413 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.81 -1073 0.89 -3612 0.74 -2502 0.70 -472 0.98 -1934 0.85 -2885 0.87 -2181 0.77 -538 0.76 -305 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.81 -1048 0.88 -3973 0.74 -2598 0.70 -466 0.97 -2329 0.82 -3239 0.85 -2450 0.76 -575 0.75 -336 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.82 -1165 0.89 -3868 0.73 -2648 0.70 -453 0.97 -2125 0.84 -3082 0.79 -1757 0.75 -601 0.75 -353 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.81 -1179 0.88 -3741 0.73 -2719 0.70 -458 0.97 -2504 0.82 -3450 0.84 -2589 0.76 -587 0.75 -347 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.81 -1181 0.88 -3905 0.73 -2722 0.70 -458 0.97 -3196 0.82 -3454 0.84 -2601 0.75 -598 0.75 -352 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.81 -1182 0.87 -3984 0.73 -2726 0.70 -458 0.97 -2538 0.82 -3461 0.84 -2611 0.75 -600 0.75 -353 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.81 -1182 0.88 -3944 0.73 -2725 0.70 -458 0.97 -2548 0.81 -3466 0.84 -2616 0.75 -594 0.75 -350 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.81 -1185 0.87 -4060 0.73 -2731 0.70 -458 0.97 -2578 0.81 -3476 0.84 -2640 0.75 -605 0.75 -356 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.81 -1151 0.85 -3142 0.74 -2709 0.70 -459 0.98 -2916 0.83 -3366 0.86 -2373 0.78 -507 0.76 -313 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.81 -1162 0.90 -3068 0.74 -2686 0.70 -457 0.97 -2311 0.83 -3349 0.85 -2459 0.77 -532 0.76 -320 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.81 -1183 0.88 -4006 0.73 -2732 0.70 -458 0.97 -3252 0.81 -3486 0.84 -2639 0.75 -591 0.75 -351 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.81 -1242 0.86 -4735 0.73 -2978 0.70 -479 0.97 -3876 0.78 -4254 0.80 -3164 0.73 -646 0.74 -400 N-2: DC-BIPOLE 0.84 -1016 0.89 -3938 0.76 -2267 0.70 -401 0.96 -2411 0.84 -2335 0.86 -2315 0.76 -575 0.75 -343 N-2: DOUBLE PALO VERDE 0.84 -613 0.96 -1699 0.78 -2156 0.70 -414 0.99 -1308 0.92 -2209 0.92 -1643 0.81 -424 0.77 -272 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.81 -1186 0.87 -4156 0.73 -2734 0.70 -458 0.97 -2572 0.81 -3476 0.84 -2638 0.75 -607 0.75 -356 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.81 -1184 0.88 -4004 0.73 -2730 0.70 -458 0.97 -2540 0.82 -3464 0.84 -2612 0.75 -605 0.75 -355 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.81 -1200 0.87 -4263 0.72 -2823 0.70 -468 0.97 -2773 0.81 -3705 0.83 -2790 0.83 -457 0.74 -456 N-2: GRASSLAND-CEDAR SP 500KV & SLATT-BUCKLEY 500KV 0.83 -1105 0.91 -3394 0.74 -2469 0.70 -438 0.98 -2293 0.87 -2704 0.88 -1747 0.75 -582 0.76 -340 N-2: GRASSLAND-COYOTE 500KV & SLATT-LONGHORN 500KV 0.82 -1079 0.89 -3448 0.75 -2596 0.70 -460 0.98 -2427 0.86 -2929 0.88 -2076 0.76 -565 0.75 -326 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV + RAS 0.82 -1100 0.89 -4157 0.74 -2547 0.70 -434 0.97 -2382 0.80 -2765 0.84 -2334 0.73 -625 0.74 -386 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV + RAS 0.82 -1060 0.89 -4218 0.74 -2498 0.70 -460 0.97 -2465 0.80 -3014 0.84 -2447 0.74 -606 0.75 -370 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV + RAS 0.82 -1202 0.86 -4824 0.74 -2671 0.70 -423 0.97 -3341 0.79 -2849 0.83 -2541 0.72 -656 0.74 -412 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.81 -1183 0.82 -3160 0.74 -2725 0.70 -459 0.97 -2483 0.82 -3413 0.84 -2552 0.76 -586 0.75 -349 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.82 -1153 0.84 -3620 0.74 -2670 0.70 -455 0.97 -2983 0.82 -3340 0.85 -2453 0.75 -588 0.75 -341 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.81 -1200 0.91 -3827 0.73 -2725 0.70 -459 0.90 -3140 0.82 -3294 0.89 -2305 0.74 -617 0.75 -365 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.81 -1175 0.88 -4050 0.73 -2685 0.70 -456 0.96 -3002 0.82 -3246 0.82 -2227 0.75 -603 0.75 -354 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV + RAS 0.82 -1050 0.91 -3836 0.75 -2483 0.70 -453 0.98 -2642 0.84 -2775 0.84 -2156 0.75 -590 0.75 -356 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV + RAS 0.82 -1095 0.90 -3973 0.74 -2562 0.70 -465 0.97 -2758 0.82 -3030 0.86 -2286 0.75 -591 0.75 -353 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.82 -1165 0.89 -3868 0.73 -2648 0.70 -453 0.97 -2125 0.84 -3082 0.79 -1757 0.75 -601 0.75 -353 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.82 -1155 0.89 -3849 0.74 -2604 0.70 -452 0.97 -2100 0.85 -2721 0.79 -1366 0.75 -591 0.75 -347 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.82 -1132 0.88 -3608 0.74 -2636 0.70 -454 0.98 -2631 0.84 -3152 0.86 -2254 0.76 -569 0.76 -330 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.81 -1171 0.88 -3959 0.73 -2687 0.70 -457 0.98 -2191 0.83 -3246 0.85 -2282 0.75 -592 0.75 -347 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.81 -1176 0.88 -4046 0.73 -2694 0.70 -456 0.98 -2165 0.83 -3270 0.84 -2295 0.75 -604 0.75 -355 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.81 -1166 0.88 -4031 0.73 -2687 0.70 -456 0.98 -2216 0.83 -3291 0.85 -2395 0.75 -603 0.75 -354 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.81 -1171 0.88 -4001 0.73 -2689 0.70 -456 0.98 -2908 0.83 -3297 0.85 -2431 0.75 -598 0.75 -351 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.81 -1107 0.87 -3824 0.74 -2683 0.70 -456 0.97 -2588 0.81 -3537 0.84 -2635 0.78 -520 0.76 -292 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.82 -1179 0.87 -4788 0.74 -2607 0.70 -427 0.97 -2961 0.79 -2344 0.85 -2768 0.73 -644 0.74 -388 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.82 -1093 0.89 -3343 0.74 -2550 0.70 -449 0.98 -1648 0.86 -2958 0.88 -2027 0.77 -553 0.76 -320 Page 173 of 776 Appendix A - 16hs2a_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Brownlee Hanford Hemingway Humbolt John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.82 -1139 0.88 -3900 0.74 -2635 0.70 -453 0.97 -2155 0.83 -3267 0.85 -2399 0.75 -596 0.75 -348 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.82 -1136 0.88 -3869 0.74 -2631 0.70 -452 0.98 -2017 0.84 -3220 0.86 -2340 0.75 -597 0.75 -349 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.81 -1164 0.88 -4112 0.73 -2697 0.70 -456 0.97 -2436 0.82 -3386 0.84 -2530 0.75 -605 0.75 -354 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.84 -1043 0.87 -4200 0.73 -2087 0.70 -486 0.97 -2501 0.82 -3175 0.85 -2557 0.77 -517 0.76 -299 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.81 -1181 0.89 -3803 0.73 -2725 0.70 -458 0.97 -3195 0.82 -3461 0.84 -2599 0.75 -590 0.75 -350 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.81 -1131 0.94 -1990 0.75 -2728 0.70 -473 0.99 -1126 0.92 -2671 0.93 -1373 0.76 -545 0.75 -355 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.81 -1131 0.94 -2003 0.75 -2734 0.70 -473 0.99 -1163 0.92 -2753 0.93 -1420 0.76 -545 0.75 -355 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.81 -1160 0.89 -3567 0.74 -2671 0.70 -456 0.98 -2151 0.83 -3302 0.86 -2428 0.76 -579 0.75 -340 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV + RAS 0.81 -1196 0.88 -3842 0.73 -2820 0.70 -467 0.98 -2413 0.82 -3608 0.84 -2462 0.74 -604 0.75 -367 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.81 -1183 0.87 -4240 0.73 -2723 0.70 -458 0.98 -2377 0.81 -3467 0.83 -2584 0.75 -606 0.75 -355 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.81 -1184 0.87 -4239 0.73 -2726 0.70 -458 0.98 -2395 0.81 -3453 0.83 -2547 0.75 -606 0.75 -355 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.81 -1187 0.87 -4212 0.73 -2735 0.70 -458 0.97 -3272 0.82 -3487 0.84 -2655 0.75 -608 0.75 -356 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.81 -1181 0.87 -4028 0.73 -2723 0.70 -458 0.97 -3202 0.82 -3456 0.84 -2608 0.75 -599 0.75 -352 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.81 -1158 0.89 -3590 0.74 -2667 0.70 -455 0.98 -2129 0.83 -3282 0.86 -2407 0.76 -576 0.75 -339 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.81 -1209 0.89 -3589 0.73 -2892 0.70 -473 0.97 -2742 0.80 -3943 0.83 -2835 0.74 -616 0.75 -379 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.81 -1209 0.90 -3711 0.73 -2889 0.70 -473 0.97 -2738 0.80 -3935 0.83 -2843 0.74 -618 0.75 -380 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.81 -1177 0.88 -3761 0.73 -2707 0.70 -457 0.97 -2431 0.82 -3396 0.85 -2556 0.75 -599 0.75 -352 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.81 -1185 0.87 -4125 0.73 -2731 0.70 -458 0.97 -2563 0.81 -3470 0.84 -2624 0.75 -606 0.75 -355 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.81 -1184 0.87 -4163 0.73 -2730 0.70 -458 0.97 -2567 0.81 -3472 0.84 -2626 0.75 -605 0.75 -355 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV + RAS 0.81 -1225 0.85 -5189 0.74 -2732 0.70 -434 0.97 -3375 0.78 -2768 0.83 -3121 0.73 -659 0.74 -396 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV + RAS 0.81 -1239 0.83 -4100 0.73 -2987 0.70 -480 0.97 -3770 0.79 -4226 0.81 -3029 0.74 -619 0.74 -387 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV + RAS 0.81 -1212 0.86 -4055 0.73 -2853 0.70 -468 0.97 -2860 0.80 -3837 0.83 -2851 0.74 -614 0.75 -373 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.81 -1169 0.91 -3549 0.74 -2861 0.70 -465 0.97 -2808 0.80 -3393 0.83 -2780 0.73 -629 0.74 -404 N-2: TAFT-BELL 500 KV & BELL-LANCASTER 230 KV 0.81 -1182 0.87 -4188 0.73 -2728 0.70 -458 0.97 -2581 0.81 -3476 0.84 -2646 0.79 -495 0.75 -346 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.81 -1188 0.87 -4128 0.73 -2737 0.70 -459 0.97 -3252 0.81 -3468 0.84 -2636 0.77 -549 0.75 -364 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV 0.81 -1182 0.87 -4188 0.73 -2728 0.70 -458 0.97 -3260 0.81 -3476 0.84 -2646 0.79 -495 0.75 -346 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.81 -1187 0.87 -4181 0.73 -2733 0.70 -458 0.97 -3247 0.81 -3460 0.84 -2636 0.77 -548 0.75 -363 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV 0.81 -1186 0.87 -4184 0.73 -2732 0.70 -458 0.97 -3248 0.81 -3461 0.84 -2637 0.78 -538 0.75 -360 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.81 -1213 0.88 -3962 0.74 -2741 0.70 -459 0.97 -3275 0.81 -3516 0.84 -2651 0.81 -457 0.77 -275 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.82 -1133 0.88 -3502 0.74 -2638 0.70 -454 0.97 -2081 0.84 -3192 0.85 -2269 0.77 -557 0.76 -325 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.82 -1133 0.88 -3502 0.74 -2638 0.70 -454 0.97 -2081 0.84 -3192 0.85 -2269 0.77 -557 0.76 -325 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.81 -1174 0.88 -3624 0.73 -2700 0.70 -457 0.97 -3048 0.82 -3370 0.85 -2513 0.75 -595 0.75 -351 Page 174 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A8: N-1 Loss of Hemingway-Boardman 500 kV Line (Angle & Voltage Plots) Page 175 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A9: N-1 Loss of Hemingway-Midpoint 500 kV Line (Angle & Voltage Plots) Page 176 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A10: N-1 Loss of Captain Jack-Olinda 500 kV Line (Angle & Voltage Plots) Page 177 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A11: N-1 Loss of Table Mtn-Tesla 500 kV Line (Angle & Voltage Plots) Page 178 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A12: N-1 Loss of Table Mtn-Vaca Dixon 500 kV Line (Angle & Voltage Plots) Page 179 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A13: N-1 Loss of Grizzly-Captain Jack 500 kV Line (Angle & Voltage Plots) Page 180 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A14: N-1 Loss of John Day-Grizzly #1 500 kV Line (Angle & Voltage Plots) Page 181 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A15: N-1 Loss of Buckley-Grizzly 500 kV Line (Angle & Voltage Plots) Page 182 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A16: N-1 Loss of Slatt-Buckley 500 kV Line (Angle & Voltage Plots) Page 183 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A17: N-1 Loss of Ashe-Slatt 500 kV Line (Angle & Voltage Plots) Page 184 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A18: Bi-Pole Loss – Pacific DC Intertie (Angle & Voltage Plots) Page 185 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A19: Breaker Failure Loss of Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 186 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A20: Breaker Failure Loss of Hemingway-Midpoint 500 kV & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 187 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A21: N-2 Loss of Brownlee-Hells Canyon 230 kV & Oxbow-Lolo 230 kV Lines (Angle & Voltage Plots) Page 188 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A22: N-2 Loss of Malin-Round Mtn #1 & 2 500 kV Lines (Angle & Voltage Plots) Page 189 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A23: N-2 Loss of Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV Lines (Angle & Voltage Plots) Page 190 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A24: N-2 Loss of Grizzly-Captain Jack & Grizzly-Malin 500 kV Lines (Angle & Voltage Plots) Page 191 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A25: N-2 Loss of Grizzly-Malin Jack & Grizzly-Summer Lake 500 kV Lines (Angle & Voltage Plots) Page 192 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A26: N-2 Loss of John Day-Grizzly #1 & #2 500 kV Lines (Angle & Voltage Plots) Page 193 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A27: N-2 Loss of Two Palo Verde Units (Angle & Voltage Plots) Page 194 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A28: N-2 Loss of Ashe-Slatt & Ashe-Marion 500 kV Lines (Angle & Voltage Plots) Page 195 of 776 Appendix A – 16la1sa_2250idnw_N Base Case Transient Stability Plots Figure A29: N-2 Loss of Slatt-Ashe & Slatt-Longhorn 500 kV Lines (Angle & Voltage Plots) Appendix A - 16hs2a_2250idnw_N Base Case Transient Stability Results Lowest Swing Lowest RAS Actions Lowest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Muskeg5 & 7 25 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV Var -11.6% 0.850 -11.7% 59.907 Damped Hemingway 500 kV N-1 Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Bridger 34.5 Stable & 3 Cy 3PH Hemingway-Midpoint 500 kV None -7.8% 0.886 -7.9% 59.929 Damped Hemingway 500 kV N-1 FACRI insertion of Ft Rock Series Caps Round Mt 500 KI2 12T3 Clear Lk 69 Kit13b20 13.2 Stable & 4 Cy 3PH Captain Jack-Olinda 500 kV Var -6.7% 0.889 -6.3% 59.863 Damped Capt Jack 500 kV N-1 Ptrsnflt 230 Ritzvill 115 Ptrsnftrg 69 Jeld-Wen 60 Stable & 4 Cy 3PH Table Mt-Tesla 500 kV None -3.1% 0.913 -3.2% 59.838 Damped Table Mt 500 kV N-1 Maxwell 500 Ritzvill 115 Ptrsnftrg 69 Millwood 60 Stable & 4 Cy 3PH Table Mt-Vaca Dixon 500 kV None -3.5% 0.913 -3.5% 59.830 Damped Table Mt 500 kV N-1 FACRI insertion of Malin Shunt Cap, Blocked Series Caps Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Kit13b20 13.2 Stable & 4 Cy 3PH Grizzly-Captain Jack 500 kV Var -7.8% 0.886 -7.9% 59.884 Damped Capt Jack 500 kV Note N-1 FACRI insertion of Ft Rock Series Caps and Malin/Captn Jack Shunt Caps Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Longlk13 25 Stable & 4 Cy 3PH John Day-Grizzly #1 500 kV Var -12.6% 0.840 -12.8% 59.753 Damped John Day 500 kV N-1 FACRI insertion of Ft Rock Series Caps Burns 500 Gardnvly 69 Ptrsnftrg 69 Kit13b20 13.2 Stable & 4 Cy 3PH Buckley-Grizzly 500 kV Var -6.1% 0.903 -5.8% 59.871 Damped Buckley 500 kV Page 197 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Transient Stability Results Lowest Swing Lowest RAS Actions Lowest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap Burns 500 Sprague 69 Ptrsnftrg 69 Kit13b20 13.2 Stable & 4 Cy 3PH Slatt-Buckley 500 kV Var -8.6% 0.881 -8.1% 59.824 Damped Slatt 500 kV N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Kit13b20 13.2 Stable & 4 Cy 3PH Ashe-Slatt 500 kV Var -8.6% 0.878 -8.7% 59.840 Damped Ashe 500 kV FACRI Ft Rock Series Caps and Malin/Captn Jack Shunt Caps Canby 230 Sprague 69 Canby 69 Longlk13 25 Stable & Bi-pole Block PDCI Bipole Var -6.5% 0.894 -6.5% 59.767 Damped Tracy&Olinda React Switching NW 2550 MW Gen Drop Breaker Failure Hemingway-Grassland 500 kV FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Bridger 34.5 Stable & 3/10 Cy SLG Hemingway 500/230 kV Transformer Var -10.3% 0.862 -10.5% 59.912 Damped Hemingway 500 kV Breaker Failure Hemingway-Midpoint 500 kV Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Strike 138 Stable & 3/10 Cy SLG Hemingway 500/230 kV Transformer None -9.1% 0.873 -9.2% 59.903 Damped Hemingway 500 kV N-2 Brownlee-Hells Canyon 230 kV La Grande 230 Ptrsnflt 230 La Grande 69 Oxbow 138 Stable & 4 Cy LLG Oxbow-Lolo 230 kV 5 Tripped 1 Hells Cyn Unit (110 MW) -6.3% 0.903 -6.5% 59.846 Damped Oxbow 230 kV N-2 Malin-Round Mt #1 500 kV Chief Jo Braking Resistor Maxwell 500 Mt Shasta 69 Mt Shasta 69 Muskeg5 & 7 25 Stable & 4 Cy 3PH Malin-Round Mt #2 500 kV Var Tracy&Olinda Reactive Switching -7.4% 0.897 -7.9% 59.798 Damped Malin 500 kV Round Mt-Table Mt #2 500 kV NW 2400 MW Gen Drop Flash Malin-Round Mt S-Caps N-2 Table Mt-Tesla 500 kV Chief Jo Braking Resistor Custer W 500 SKA 138 138 WBK 25 25 Millwood 60 Stable & 4 Cy 3PH Table Mt-Vaca Dixon 500 kV Var Tracy & Olinda Reactive Switching -6.4% 0.886 -6.5% 59.702 Damped Table Mt 500 kV NW 2400 MW Gen Drop Page 198 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Transient Stability Results Lowest Swing Lowest RAS Actions Lowest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-2 Grizzly-CaptJack 500 kV FACRI insertion of Malin C1 and CaptJack C1 Shunt Capacitors Summer L 500 Goldhill 69 Fortrock 115 Longlk13 25 Stable & 4 Cy 3PH Grizzly-Malin 500 kV Var -12.4% 0.839 -12.5% 59.697 Damped Grizzly 500 kV NW 2400 MW Gen Drop N-2 Grizzly-Malin 500 kV FACRI insertion of Malin C1 and CaptJack C1 Shunt Capacitors Bufflofl 115 Sprague 69 Xmas Vly 115 Longlk13 25 Stable & 4 Cy 3PH Grizzly-Summer Lake 500 kV Var -12.3% 0.845 -12.3% 59.691 Damped Grizzly 500 kV NW 2400 MW Gen Drop N-2 FACRI insert Ft Rock Series Caps, Malin C1&C2, CaptJack C1 Ptrsnflt 230 Goldhill 69 Ptrsnftrg 69 Longlk13 25 Stable & 4 Cy 3PH John Day-Grizzly #1 & #2 500 kV Var -16.2% 0.798 -16.5% 59.604 Damped John Day 500 kV NW 2400 MW Gen Drop N-2 John Day-Grizzly #2 500 kV FACRI insert Ft Rock Series Caps, Malin C1, CaptJack C1 CBN 500 500 SKA 138 138 WBK 25 25 Longlk13 25 Stable & 4 Cy 3PH Buckley-Grizzly 500 kV Var -10.0% 0.853 -10.1% 59.692 Damped Grizzly 500 kV NW 2400 MW Gen Drop N-2 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1&C2 & CaptJack Sh Cap C1 Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Muskeg5 & 7 25 Stable & Loss of 2 Palo Verde units Var -10.5% 0.859 -10.7% 59.753 Damped N-2 Ashe-Slatt 500 kV FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 & CaptJack Sh Cap C1 Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Muskeg5 & 7 25 Stable & 4 Cy 3PH Ashe-Marion 500 kV Var -11.9% 0.847 -12.0% 59.835 Damped Ashe 500 kV N-2 Slatt-Ashe 500 kV FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 & CaptJack Sh Cap C1 Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Kit13B20 13.2 Stable & 4 Cy 3PH Slatt-Longhorn 500 kV Var -9.8% 0.867 -9.9% 59.824 Damped Slatt 500 kV Page 199 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) Page 200 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV CLOSE MultiSectionLine PEARL_500.0 (40827) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) Page 201 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_230.0 (40519) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_500.0 (40521) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCITYT_115.0 (48245) TO SPULLMAN_115.0 (48413) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCCITY_115.0 (48243) TO MOSCITYT_115.0 (48245) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS N LEWIST_115.0 (48253) TO 44.4 MVR BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line NPULLMAN_115.0 (48291) TO SHAWNEE_115.0 (48383) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS HOT SPR_500.0 (40553) TO -148.3 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4700 Hatwai 500kV & 230 kV + RAS CLOSE Line LEON_115.0 (48183) TO MOSCCITY_115.0 (48243) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 Page 202 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 Page 203 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) Page 204 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Page 205 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 Page 206 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Grassland 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 Page 207 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV CLOSE Shunt HUMBOLT1_ 24.9 (64216) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s Page 208 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 Page 209 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap SANTIAM_500.0 (40941) TO SANTMKO2_500.0 (43492) CKT 2 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap MIKKALO_500.0 (43970) TO MKLOSNT2_500.0 (43971) CKT 2 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARLAND1_ 34.5 (67147) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt FRANNIE2_ 34.5 (67145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt OREBASIN_230.0 (66145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt PTRSNFLT_230.0 (62030) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) Page 210 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei Page 211 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) Page 212 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 Page 213 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 Page 214 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) Page 215 of 776 Appendix A - 16hs2a_2250idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 Page 216 of 776 Appendix B 16la1sa_3400idnw_N Base Case (Idaho-Northwest, East-to-West) Page 217 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B1: 16la1sa_3400idnw_N Base Case Pre-Contingency 1.08 puMALIN-290.3 Mvar 0.0 Mvar 0.0 Mvar -174.3 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.4 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.4 Mvar 1.08 puPONDROSA -286.5 Mvar 2 8 9 M W - 2 0 6 M v a r 2 5 2 M W - 2 5 0 M v a r 2 4 9 M W - 1 7 4 M v a r 403 MW -52 Mvar 107 MW -86 Mvar 98 MW -90 Mvar 1391 MW 135 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 puGRASSLND 0.0 Mvar 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.03 puMIDPOINT 0.0 Mvar 187.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 3 M W 4 9 M v a r 7 0 9 M W - 1 4 9 M v a r 88 MW -3 Mvar 88 MW -3 Mvar 543 MW 4 Mvar 756 MW -81 Mvar 12 MW 89 Mvar 487 MW -48 Mvar 580 MW -100 Mvar 1110 MW -271 Mvar 93 MW -140 Mvar 1233 MW -85 Mvar 1546 MW 199 Mvar 1 3 3 M W - 3 1 M v a r 1548 MW 132 Mvar 811 MW -76 Mvar 447 MW 18 Mvar 421 MW -95 Mvar 438 MW -102 Mvar 122 MW -15 Mvar 1.05 puANTICLIN 641 MW 43 Mvar 640 MW 43 Mvar 705 MW -74 Mvar 697 MW -113 Mvar 422 MW -19 Mvar 811 MW -76 Mvar 233 MW -73 Mvar 429 MW -16 Mvar 638 MW -81 Mvar 350 MW 18 Mvar 456 MW -97 Mvar 495 MW -104 Mvar 1336 MW -61 Mvar 1 2 8 4 M W - 4 0 7 M v a r 1453 MW 170 Mvar 1186 MW -155 Mvar 3 1 3 M W - 3 6 5 M v a r 619 MW -41 Mvar 144 MW -36 Mvar 185 MW -21 Mvar 157 MW -18 Mvar 32 MW 3 Mvar 72 MW -14 Mvar 1 1 1 M W - 4 3 M v a r 58 MW -35 Mvar 273 MW -53 Mvar 159 MW -64 Mvar 149 MW -43 Mvar 158 MW -40 Mvar 158 MW -43 Mvar 3 4 M W 1 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 72 MW -14 Mvar 35 MW -16 Mvar 106 MW -17 Mvar 2 1 3 M W - 1 9 M v a r 189 MW -19 Mvar 88 MW 13 Mvar 20 MW -23 Mvar 20 MW -23 Mvar 19 MW -25 Mvar 24 MW -36 Mvar 46 MW 6 Mvar 59 MW 8 Mvar 1 3 3 M W 7 4 M v a r 1 3 3 M W 7 0 M v a r 621 MW -156 Mvar 1241 MW -323 Mvar 609 MW -80 Mvar 414 MW -76 Mvar 297 MW 40 Mvar 276 MW -9 Mvar 245 MW 42 Mvar 230 MW -19 Mvar 226 MW -18 Mvar 347 MW 2 Mvar 355 MW 1 Mvar 583 MW -44 Mvar 2 3 M W 3 0 M v a r 893 MW -77 Mvar 2 6 8 M W - 3 2 M v a r 2 5 1 M W - 1 1 M v a r 9 3 9 M W - 2 1 1 M v a r 940 MW -286 Mvar ID-NW = 3400 MW Grassland = 1284 MW Summer Lake = 1391 MW Lolo = 213 MW Walla Walla = 289 MW LaGrande = 185 MW Midpoint West = 3500 MW Borah West = 3557 MW Idaho-Sierra = 133 MW N of John Day = -124 MW COI = 1532 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1957 MW W of Slatt = 2982 MW Alturas Project = -256 MW Path C = 749 MW Montana Southeast = -598 MW TOT 2B1 = 561 MW TOT 2C = 600 MW 1365 MW -191 Mvar 28 MW 29 Mvar 203 MW -78 Mvar 88 MW -2 Mvar 267 M W 144 M v a r 3 4 0 M W - 2 7 3 M v a r Page 218 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B2: 16la1sa_3400idnw_N Base Case after the contingency BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr 1.07 puMALIN-282.1 Mvar 0.0 Mvar 0.0 Mvar -169.3 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar -283.3 Mvar 1.07 puPONDROSB 1.07 puGRIZZLY -845.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.03 puHEMINWAY 424.1 Mvar 1.05 puPONDROSA -275.1 Mvar 1 1 6 M W - 1 6 2 M v a r 9 1 M W - 2 1 4 M v a r 6 3 3 M W - 4 5 5 M v a r 821 MW -357 Mvar 199 MW -160 Mvar 180 MW -152 Mvar 2005 MW 554 Mvar 1.01 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.09 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -288.6 Mvar 1.09 pu GRASSLND 0.0 Mvar 1.09 puCOYOTE 1.08 puLOW MON -287.2 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.09 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 55.1 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.01 puHURICANE 1.02 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 124.3 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.08 puCEN FERY -152.8 Mvar 1.08 puLIT GOOS 1.02 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.5 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.04 puIDAHO-NV 1.02 puKINPORT 182.9 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.8 Mvar 220.8 Mvar -288.6 Mvar 1.09 puMARION -467.5 Mvar 9 6 M W - 1 6 8 M v a r 4 1 9 M W - 5 5 M v a r 135 MW -119 Mvar 135 MW -119 Mvar 514 MW 3 Mvar 623 MW -68 Mvar 455 MW -52 Mvar 44 MW 77 Mvar 486 MW -87 Mvar 404 MW -45 Mvar 442 MW -255 Mvar 762 MW 157 Mvar 1259 MW 210 Mvar 2 2 5 M W - 4 1 M v a r 1260 MW 78 Mvar 696 MW -24 Mvar 78 MW 72 Mvar 412 MW -66 Mvar 429 MW -72 Mvar 76 MW 29 Mvar 1.05 puANTICLIN 625 MW 41 Mvar 624 MW 41 Mvar 683 MW -38 Mvar 677 MW -76 Mvar 446 MW -14 Mvar 696 MW -24 Mvar 192 MW -77 Mvar 426 MW -10 Mvar 641 MW -79 Mvar 320 MW 37 Mvar 453 MW -71 Mvar 492 MW -76 Mvar 1359 MW 164 Mvar 1114 MW -119 Mvar 443 MW -403 Mvar 513 MW -1 Mvar 205 MW -43 Mvar 249 MW -69 Mvar 222 MW -57 Mvar 32 MW 4 Mvar 73 MW -18 Mvar 1 7 1 M W - 6 1 M v a r 109 MW -66 Mvar 341 MW -88 Mvar 184 MW -83 Mvar 174 MW -61 Mvar 183 MW -58 Mvar 184 MW -62 Mvar 1 1 1 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 0.0 Mvar -76.1 Mvar 1.02 puONTARIO 73 MW -18 Mvar 48 MW -23 Mvar 150 MW -41 Mvar 2 7 9 M W - 2 3 M v a r 250 MW -26 Mvar 58 MW 26 Mvar 63 MW -42 Mvar 63 MW -42 Mvar 64 MW -45 Mvar 70 MW -56 Mvar 74 MW 2 Mvar 95 MW 3 Mvar 1 2 3 M W 6 4 M v a r 1 2 3 M W 6 0 M v a r 515 MW -134 Mvar 1136 MW -300 Mvar 598 MW -87 Mvar 442 MW -98 Mvar 340 MW 17 Mvar 316 MW -29 Mvar 284 MW 21 Mvar 272 MW -43 Mvar 267 MW -42 Mvar 407 MW -31 Mvar 417 MW -32 Mvar 705 MW -114 Mvar 8 3 M W 3 M v a r 530 MW 66 Mvar 1 1 1 M W - 1 2 M v a r 9 1 M W 2 0 M v a r 1 0 6 7 M W - 4 2 1 M v a r 1068 MW -524 Mvar ID-NW = 2938 MW Grassland = 0 MW Summer Lake = 2005 MW Lolo = 279 MW Walla Walla = 363 MW LaGrande = 249 MW Midpoint West = 3005 MW Borah West = 3152 MW Idaho-Sierra = 225 MW N of John Day = 134 MW COI = 1229 MW PDCI = 1100 MW ID-MT = 333 MW W of McNary = 2187 MW W of Slatt = 2087 MW Alturas Project = -290 MW Path C = 540 MW Montana Southeast = -682 MW TOT 2B1 = 612 MW TOT 2C = 673 MW 1944 MW -469 Mvar 0 MW 0 Mvar 91 MW -48 Mvar 18 MW -30 Mvar 246 M W 124 M v a r 3 2 5 M W - 2 7 1 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 219 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B3: 16la1sa_3400idnw_N Base Case after the contingency BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS 1.09 puMALIN-294.8 Mvar 0.0 Mvar 0.0 Mvar -177.0 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -295.4 Mvar 1.09 puPONDROSB 1.09 puGRIZZLY -880.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.09 puHEMINWAY 474.4 Mvar 1.09 puPONDROSA -292.5 Mvar 2 3 2 M W - 2 0 4 M v a r 1 8 9 M W - 2 4 6 M v a r 1 5 9 M W - 8 1 M v a r 292 MW 57 Mvar 88 MW -61 Mvar 81 MW -68 Mvar 996 MW 4 Mvar 1.00 puHEMINWAY 1.10 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.09 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.8 Mvar 1.09 pu GRASSLND 0.0 Mvar 1.09 puCOYOTE 1.08 puLOW MON -288.1 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.09 puCDR SPRG 1.10 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.02 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 123.6 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.2 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.04 puMIDPOINT 432.8 Mvar 0.00 puCEDARHIL 0.0 Mvar 1.02 puBORAH 0.99 puMIDPOINT 0.0 Mvar 171.0 Mvar 1.06 puPOPULUS 0.0 Mvar 0.98 puBORAH 0.0 Mvar 0.98 puADELAIDE 1.02 puIDAHO-NV 0.99 puKINPORT 172.5 Mvar 1.08 puANTICLIN 0.0 Mvar 0.99 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.00 puPOPULUS 0.0 Mvar 1.00 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.0 Mvar 219.0 Mvar -289.8 Mvar 1.09 puMARION -473.3 Mvar 1 3 7 M W 4 0 M v a r 6 6 0 M W - 1 5 2 M v a r 85 MW -36 Mvar 85 MW -37 Mvar 520 MW 20 Mvar 716 MW -74 Mvar 176 MW -6 Mvar 323 MW 26 Mvar 568 MW -117 Mvar 893 MW -179 Mvar 246 MW -233 Mvar 1880 MW -617 Mvar 0 MW 0 Mvar 1 7 7 M W - 6 4 M v a r 0 MW 0 Mvar 1206 MW -45 Mvar 737 MW -58 Mvar 623 MW -153 Mvar 646 MW -163 Mvar 1128 MW 160 Mvar 1.04 puANTICLIN 654 MW 87 Mvar 653 MW 88 Mvar 1054 MW -107 Mvar 1045 MW -173 Mvar 691 MW -53 Mvar 1206 MW -45 Mvar 216 MW -37 Mvar 463 MW -0 Mvar 694 MW -113 Mvar 493 MW 71 Mvar 660 MW -112 Mvar 715 MW -120 Mvar 1145 MW 195 Mvar 1044 MW -66 Mvar 385 MW -411 Mvar 610 MW -52 Mvar 176 MW -60 Mvar 219 MW -35 Mvar 192 MW -26 Mvar 34 MW 2 Mvar 70 MW -15 Mvar 1 4 3 M W - 7 4 M v a r 92 MW -56 Mvar 314 MW -76 Mvar 176 MW -77 Mvar 165 MW -56 Mvar 174 MW -52 Mvar 175 MW -56 Mvar 8 1 M W - 1 2 M v a r HORSEFLT 1.00 puBOISEBCH 0.0 Mvar -74.8 Mvar 1.01 puONTARIO 70 MW -15 Mvar 43 MW -21 Mvar 130 MW -31 Mvar 2 5 0 M W - 2 5 M v a r 222 MW -12 Mvar 71 MW 30 Mvar 44 MW -44 Mvar 44 MW -44 Mvar 45 MW -47 Mvar 50 MW -59 Mvar 62 MW -5 Mvar 79 MW -5 Mvar 5 0 M W 5 8 M v a r 5 0 M W 5 7 M v a r 612 MW -169 Mvar 1180 MW -308 Mvar 614 MW -94 Mvar 448 MW -105 Mvar 335 MW 13 Mvar 311 MW -32 Mvar 279 MW 18 Mvar 267 MW -45 Mvar 262 MW -44 Mvar 400 MW -35 Mvar 409 MW -36 Mvar 691 MW -120 Mvar 5 9 M W 1 5 M v a r 799 MW -31 Mvar 1 9 7 M W - 1 9 M v a r 1 8 9 M W - 3 M v a r 6 8 0 M W - 1 2 2 M v a r 680 MW -173 Mvar ID-NW = 2702 MW Grassland = 862 MW Summer Lake = 996 MW Lolo = 250 MW Walla Walla = 334 MW LaGrande = 219 MW Midpoint West = 2803 MW Borah West = 2941 MW Idaho-Sierra = 177 MW N of John Day = 130 MW COI = 1146 MW PDCI = 1100 MW ID-MT = 327 MW W of McNary = 2101 MW W of Slatt = 2790 MW Alturas Project = -293 MW Path C = 464 MW Montana Southeast = -708 MW TOT 2B1 = 633 MW TOT 2C = 706 MW 984 MW -62 Mvar 0 MW 0 Mvar 131 MW -47 Mvar 20 MW 30 Mvar 101 M W 111 M v a r 3 4 7 M W - 2 8 1 M v a r 8 6 2 M W 2 1 M v a r 884 MW -175 Mvar Page 220 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B4: 16la1sa_3400idnw_N Base Case after the contingency Bus: Summer Lake 500 kV 1.09 puMALIN-293.3 Mvar 0.0 Mvar 0.0 Mvar -176.1 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -293.6 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -865.2 Mvar 0.00 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.0 Mvar 0.00 puPONDROSA 0.0 Mvar 5 6 8 M W - 2 5 2 M v a r 4 6 7 M W - 3 0 6 M v a r 0 M W 0 M v a r 0 MW 0 Mvar 124 MW 12 Mvar 105 MW 29 Mvar 0 MW 0 Mvar 1.04 puHEMINWAY 1.08 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE -285.8 Mvar 1.06 pu GRASSLND 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON -284.7 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.06 puCDR SPRG 1.08 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.01 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 125.9 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY -151.7 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.7 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.03 puKINPORT 184.6 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 221.4 Mvar 221.4 Mvar -285.8 Mvar 1.08 puMARION -465.2 Mvar 4 0 0 M W - 2 8 M v a r 9 4 7 M W - 2 0 7 M v a r 339 MW -64 Mvar 340 MW -65 Mvar 542 MW -12 Mvar 833 MW -98 Mvar 158 MW -226 Mvar 657 MW -131 Mvar 679 MW -100 Mvar 1490 MW -462 Mvar 23 MW -55 Mvar 929 MW 28 Mvar 1346 MW 141 Mvar 2 4 7 M W - 2 8 M v a r 1348 MW 22 Mvar 713 MW -75 Mvar 231 MW 14 Mvar 395 MW -84 Mvar 411 MW -90 Mvar 15 MW 74 Mvar 1.05 puANTICLIN 626 MW 31 Mvar 625 MW 31 Mvar 662 MW -48 Mvar 655 MW -85 Mvar 420 MW 23 Mvar 713 MW -75 Mvar 201 MW -85 Mvar 420 MW -11 Mvar 635 MW -75 Mvar 318 MW 8 Mvar 432 MW -89 Mvar 469 MW -96 Mvar 1386 MW 136 Mvar 1130 MW -138 Mvar 367 MW -362 Mvar 740 MW -86 Mvar 196 MW -62 Mvar 240 MW -32 Mvar 214 MW -19 Mvar 27 MW 6 Mvar 77 MW -20 Mvar 1 6 2 M W - 8 0 M v a r 99 MW -59 Mvar 342 MW -83 Mvar 179 MW -78 Mvar 168 MW -57 Mvar 178 MW -53 Mvar 178 MW -57 Mvar 1 1 2 M W 1 M v a r HORSEFLT 1.02 puBOISEBCH 0.0 Mvar -78.6 Mvar 1.03 puONTARIO 77 MW -20 Mvar 48 MW -22 Mvar 155 MW -41 Mvar 2 8 5 M W - 1 9 M v a r 245 MW 4 Mvar 44 MW 16 Mvar 60 MW -25 Mvar 60 MW -25 Mvar 60 MW -28 Mvar 66 MW -39 Mvar 77 MW 8 Mvar 99 MW 11 Mvar 1 2 8 M W 5 8 M v a r 1 2 8 M W 5 4 M v a r 744 MW -171 Mvar 1255 MW -337 Mvar 647 MW -98 Mvar 467 MW -91 Mvar 328 MW 31 Mvar 304 MW -16 Mvar 272 MW 33 Mvar 260 MW -31 Mvar 255 MW -30 Mvar 389 MW -14 Mvar 398 MW -15 Mvar 669 MW -85 Mvar 8 6 M W 3 M v a r 1128 MW -212 Mvar 4 4 3 M W - 9 0 M v a r 4 6 4 M W - 7 1 M v a r 0 M W 0 M v a r 0 MW 0 Mvar ID-NW = 2849 MW Grassland = 1913 MW Summer Lake = 0 MW Lolo = 285 MW Walla Walla = 364 MW LaGrande = 240 MW Midpoint West = 3027 MW Borah West = 3193 MW Idaho-Sierra = 247 MW N of John Day = 83 MW COI = 1190 MW PDCI = 1100 MW ID-MT = 303 MW W of McNary = 2043 MW W of Slatt = 3657 MW Alturas Project = -298 MW Path C = 523 MW Montana Southeast = -650 MW TOT 2B1 = 617 MW TOT 2C = 681 MW 0 MW 0 Mvar 219 MW 25 Mvar 205 MW -90 Mvar 93 MW -14 Mvar 257 M W 112 M v a r 3 8 1 M W - 2 6 9 M v a r 1 9 1 3 M W - 1 0 9 9 M v a r 2038 MW 784 Mvar Page 221 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B5: 16la1sa_3400idnw_N Base Case after the contingency N-1: Hemingway-Grassland 500 kV 1.07 puMALIN-282.9 Mvar 0.0 Mvar 0.0 Mvar -169.9 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar -284.1 Mvar 1.07 puPONDROSB 1.07 puGRIZZLY -847.2 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.03 puHEMINWAY 426.3 Mvar 1.05 puPONDROSA -276.2 Mvar 1 2 3 M W - 1 6 6 M v a r 9 8 M W - 2 1 7 M v a r 6 1 2 M W - 4 3 0 M v a r 797 MW -331 Mvar 194 MW -153 Mvar 176 MW -147 Mvar 1960 MW 509 Mvar 1.01 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.09 puLONGHORN 1.08 puSACJWA T 1.04 puMCNRY S1 1.08 puASHE -288.5 Mvar 1.09 pu GRASSLND 0.0 Mvar 1.09 puCOYOTE 1.08 puLOW MON -286.9 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.09 puCDR SPRG 1.09 puBUCKLEY 0.99 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 1.01 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 0.0 Mvar 123.5 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.08 puCEN FERY -152.6 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.5 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.04 puIDAHO-NV 1.02 puKINPORT 183.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.8 Mvar 220.8 Mvar -288.4 Mvar 1.09 puMARION -467.7 Mvar 8 6 M W - 1 5 9 M v a r 4 2 8 M W - 6 3 M v a r 123 MW -107 Mvar 123 MW -107 Mvar 513 MW 5 Mvar 624 MW -69 Mvar 461 MW -58 Mvar 38 MW 85 Mvar 492 MW -93 Mvar 409 MW -49 Mvar 454 MW -268 Mvar 909 MW 124 Mvar 1318 MW 223 Mvar 2 2 8 M W - 3 9 M v a r 1320 MW 103 Mvar 708 MW -29 Mvar 217 MW 79 Mvar 397 MW -67 Mvar 413 MW -72 Mvar 26 MW 18 Mvar 1.05 puANTICLIN 624 MW 41 Mvar 623 MW 41 Mvar 668 MW -40 Mvar 662 MW -77 Mvar 432 MW -13 Mvar 708 MW -29 Mvar 192 MW -77 Mvar 424 MW -10 Mvar 639 MW -77 Mvar 315 MW 33 Mvar 434 MW -73 Mvar 472 MW -79 Mvar 1370 MW 167 Mvar 1118 MW -120 Mvar 461 MW -426 Mvar 521 MW -10 Mvar 215 MW -77 Mvar 260 MW -40 Mvar 234 MW -22 Mvar 29 MW 6 Mvar 75 MW -20 Mvar 1 8 0 M W - 1 0 0 M v a r 122 MW -74 Mvar 363 MW -99 Mvar 190 MW -88 Mvar 180 MW -66 Mvar 189 MW -62 Mvar 190 MW -67 Mvar 1 3 7 M W - 1 1 M v a r HORSEFLT 1.01 puBOISEBCH 0.0 Mvar -76.6 Mvar 1.01 puONTARIO 75 MW -20 Mvar 52 MW -26 Mvar 167 MW -52 Mvar 3 0 3 M W - 2 3 M v a r 262 MW 5 Mvar 32 MW 27 Mvar 72 MW -35 Mvar 72 MW -35 Mvar 73 MW -38 Mvar 80 MW -49 Mvar 85 MW 4 Mvar 109 MW 6 Mvar 1 2 6 M W 6 5 M v a r 1 2 6 M W 6 2 M v a r 523 MW -141 Mvar 1136 MW -300 Mvar 602 MW -90 Mvar 449 MW -103 Mvar 345 MW 15 Mvar 320 MW -31 Mvar 288 MW 19 Mvar 277 MW -45 Mvar 272 MW -44 Mvar 414 MW -34 Mvar 423 MW -36 Mvar 718 MW -121 Mvar 1 0 3 M W - 1 2 M v a r 536 MW 61 Mvar 1 1 8 M W - 1 2 M v a r 9 8 M W 1 8 M v a r 1 0 5 4 M W - 4 0 2 M v a r 1055 MW -501 Mvar ID-NW = 2957 MW Grassland = 0 MW Summer Lake = 1960 MW Lolo = 303 MW Walla Walla = 388 MW LaGrande = 260 MW Midpoint West = 3022 MW Borah West = 3170 MW Idaho-Sierra = 228 MW N of John Day = 153 MW COI = 1237 MW PDCI = 1100 MW ID-MT = 329 MW W of McNary = 2211 MW W of Slatt = 2112 MW Alturas Project = -290 MW Path C = 547 MW Montana Southeast = -678 MW TOT 2B1 = 611 MW TOT 2C = 671 MW 1903 MW -445 Mvar 250 MW -28 Mvar 88 MW -49 Mvar 19 MW -28 Mvar 252 M W 127 M v a r 3 2 8 M W - 2 7 2 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 222 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B6: 16la1sa_3400idnw_N Base Case after the contingency N-1: Hemingway-Summer Lake 500 kV 1.09 puMALIN-292.6 Mvar 0.0 Mvar 0.0 Mvar -175.7 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -293.1 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -867.6 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 453.7 Mvar 1.08 puPONDROSA -289.7 Mvar 3 9 1 M W - 2 4 0 M v a r 3 3 2 M W - 2 8 0 M v a r 3 8 9 M W - 3 6 M v a r 311 MW -183 Mvar 39 MW 42 Mvar 31 MW 54 Mvar 0 MW 0 Mvar 1.03 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE -285.9 Mvar 1.06 pu GRASSLND 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON -284.7 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.06 puCDR SPRG 1.08 puBUCKLEY 0.99 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.01 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 125.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY -151.7 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.4 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.03 puKINPORT 184.5 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 221.3 Mvar 221.3 Mvar -285.9 Mvar 1.08 puMARION -465.5 Mvar 4 2 2 M W - 3 6 M v a r 9 5 5 M W - 2 1 4 M v a r 360 MW -74 Mvar 361 MW -75 Mvar 528 MW -9 Mvar 828 MW -100 Mvar 161 MW -229 Mvar 660 MW -134 Mvar 682 MW -103 Mvar 1499 MW -470 Mvar 23 MW -54 Mvar 934 MW 30 Mvar 1350 MW 145 Mvar 2 4 2 M W - 2 8 M v a r 1351 MW 27 Mvar 715 MW -73 Mvar 234 MW 17 Mvar 396 MW -83 Mvar 412 MW -89 Mvar 12 MW 70 Mvar 1.05 puANTICLIN 626 MW 32 Mvar 625 MW 32 Mvar 664 MW -48 Mvar 657 MW -85 Mvar 421 MW 21 Mvar 715 MW -73 Mvar 201 MW -84 Mvar 420 MW -11 Mvar 635 MW -75 Mvar 319 MW 9 Mvar 433 MW -88 Mvar 470 MW -95 Mvar 1387 MW 138 Mvar 1130 MW -137 Mvar 370 MW -363 Mvar 745 MW -89 Mvar 197 MW -62 Mvar 241 MW -32 Mvar 215 MW -19 Mvar 27 MW 6 Mvar 77 MW -20 Mvar 1 6 3 M W - 8 1 M v a r 100 MW -60 Mvar 343 MW -83 Mvar 179 MW -78 Mvar 169 MW -57 Mvar 178 MW -54 Mvar 179 MW -58 Mvar 1 1 4 M W 0 M v a r HORSEFLT 1.02 puBOISEBCH 0.0 Mvar -78.5 Mvar 1.03 puONTARIO 77 MW -20 Mvar 48 MW -22 Mvar 156 MW -41 Mvar 2 8 6 M W - 1 9 M v a r 246 MW 4 Mvar 43 MW 17 Mvar 60 MW -26 Mvar 60 MW -26 Mvar 61 MW -28 Mvar 67 MW -40 Mvar 77 MW 8 Mvar 99 MW 11 Mvar 1 2 8 M W 5 8 M v a r 1 2 8 M W 5 5 M v a r 749 MW -173 Mvar 1256 MW -338 Mvar 647 MW -99 Mvar 467 MW -92 Mvar 328 MW 30 Mvar 305 MW -16 Mvar 273 MW 32 Mvar 260 MW -32 Mvar 256 MW -31 Mvar 390 MW -15 Mvar 400 MW -16 Mvar 672 MW -87 Mvar 8 7 M W 3 M v a r 1136 MW -219 Mvar 3 2 7 M W - 5 7 M v a r 3 3 1 M W - 4 2 M v a r 3 1 1 M W - 1 1 7 M v a r 311 MW -148 Mvar ID-NW = 2859 MW Grassland = 1920 MW Summer Lake = 0 MW Lolo = 286 MW Walla Walla = 365 MW LaGrande = 241 MW Midpoint West = 3040 MW Borah West = 3201 MW Idaho-Sierra = 242 MW N of John Day = 88 MW COI = 1203 MW PDCI = 1100 MW ID-MT = 304 MW W of McNary = 2047 MW W of Slatt = 3671 MW Alturas Project = -296 MW Path C = 532 MW Montana Southeast = -652 MW TOT 2B1 = 615 MW TOT 2C = 678 MW 0 MW 0 Mvar 219 MW 23 Mvar 203 MW -90 Mvar 91 MW -14 Mvar 257 M W 113 M v a r 3 7 6 M W - 2 7 0 M v a r 1 9 2 0 M W - 1 1 1 7 M v a r 2046 MW 793 Mvar Page 223 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B7: 16la1sa_3400idnw_N Base Case after the contingency N-1: Red Butte-Harry Allen 345 kV 1.08 puMALIN-287.5 Mvar 0.0 Mvar 0.0 Mvar -172.6 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -288.3 Mvar 1.08 puPONDROSB 1.07 puGRIZZLY -858.3 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 434.8 Mvar 1.07 puPONDROSA -283.2 Mvar 3 3 7 M W - 2 0 7 M v a r 3 0 2 M W - 2 5 1 M v a r 2 2 4 M W - 2 1 3 M v a r 380 MW -98 Mvar 101 MW -99 Mvar 93 MW -101 Mvar 1454 MW 139 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -287.9 Mvar 1.07 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -287.3 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 126.8 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.2 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.06 puCEDARHIL 0.0 Mvar 1.06 puBORAH 1.02 puMIDPOINT 0.0 Mvar 180.9 Mvar 1.06 puPOPULUS 0.0 Mvar 1.00 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.04 puIDAHO-NV 1.01 puKINPORT 179.4 Mvar 1.07 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.01 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.5 Mvar 219.5 Mvar -287.9 Mvar 1.08 puMARION -466.9 Mvar 1 9 8 M W 5 3 M v a r 7 4 2 M W - 1 4 7 M v a r 130 MW 12 Mvar 131 MW 11 Mvar 541 MW -5 Mvar 764 MW -86 Mvar 3 MW 125 Mvar 497 MW -66 Mvar 594 MW -93 Mvar 1144 MW -305 Mvar 98 MW -115 Mvar 1291 MW -86 Mvar 1610 MW 283 Mvar 1 7 6 M W - 4 3 M v a r 1612 MW 243 Mvar 865 MW -49 Mvar 455 MW 49 Mvar 456 MW -97 Mvar 474 MW -104 Mvar 191 MW 26 Mvar 1.04 puANTICLIN 637 MW 61 Mvar 636 MW 61 Mvar 756 MW -79 Mvar 747 MW -122 Mvar 458 MW -55 Mvar 865 MW -49 Mvar 232 MW -57 Mvar 436 MW -9 Mvar 637 MW -76 Mvar 371 MW 40 Mvar 491 MW -93 Mvar 533 MW -101 Mvar 1448 MW 220 Mvar 1168 MW -118 Mvar 325 MW -359 Mvar 637 MW -43 Mvar 152 MW -42 Mvar 194 MW -24 Mvar 166 MW -20 Mvar 33 MW 3 Mvar 72 MW -15 Mvar 1 1 9 M W - 5 1 M v a r 66 MW -39 Mvar 284 MW -59 Mvar 163 MW -66 Mvar 152 MW -46 Mvar 162 MW -43 Mvar 162 MW -46 Mvar 4 6 M W 3 M v a r HORSEFLT 1.02 puBOISEBCH 0.0 Mvar -77.5 Mvar 1.03 puONTARIO 72 MW -15 Mvar 37 MW -17 Mvar 113 MW -21 Mvar 2 2 3 M W - 2 1 M v a r 198 MW -17 Mvar 83 MW 21 Mvar 26 MW -31 Mvar 26 MW -31 Mvar 26 MW -33 Mvar 30 MW -45 Mvar 50 MW 1 Mvar 64 MW 2 Mvar 1 4 0 M W 8 3 M v a r 1 4 0 M W 7 9 M v a r 639 MW -153 Mvar 1231 MW -326 Mvar 614 MW -84 Mvar 426 MW -79 Mvar 307 MW 38 Mvar 285 MW -11 Mvar 254 MW 39 Mvar 239 MW -23 Mvar 235 MW -22 Mvar 360 MW -3 Mvar 368 MW -4 Mvar 610 MW -57 Mvar 3 3 M W 2 7 M v a r 919 MW -97 Mvar 3 2 1 M W - 3 8 M v a r 3 0 1 M W - 1 5 M v a r 1 0 1 8 M W - 2 5 1 M v a r 1019 MW -337 Mvar ID-NW = 3546 MW Grassland = 1336 MW Summer Lake = 1454 MW Lolo = 223 MW Walla Walla = 301 MW LaGrande = 194 MW Midpoint West = 3664 MW Borah West = 3770 MW Idaho-Sierra = 176 MW N of John Day = -44 MW COI = 1750 MW PDCI = 1100 MW ID-MT = 273 MW W of McNary = 1984 MW W of Slatt = 3067 MW Alturas Project = -258 MW Path C = 1004 MW Montana Southeast = -624 MW TOT 2B1 = 667 MW TOT 2C = 0 MW 1425 MW -263 Mvar 26 MW -5 Mvar 193 MW -81 Mvar 79 MW -4 Mvar 280 M W 163 M v a r 3 4 9 M W - 2 6 9 M v a r 1 3 3 6 M W - 4 8 0 M v a r 1394 MW 85 Mvar Page 224 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B8: 16la1sa_3400idnw_N Base Case after the contingency N-2: Broadview-Garrison #1 & #2 500 kV + RAS 1.08 puMALIN-289.8 Mvar 0.0 Mvar 0.0 Mvar -174.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -290.6 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -863.5 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 435.3 Mvar 1.07 puPONDROSA -285.0 Mvar 1 4 8 M W - 1 9 4 M v a r 1 1 2 M W - 2 4 0 M v a r 3 8 7 M W - 2 1 5 M v a r 543 MW -95 Mvar 143 MW -96 Mvar 130 MW -98 Mvar 1391 MW 96 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -290.8 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -291.4 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 126.3 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.09 puHATWAI 1.09 puLOW GRAN 1.09 puCEN FERY -156.0 Mvar 1.09 puLIT GOOS 1.02 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.05 puCEDARHIL 0.0 Mvar 1.05 puBORAH 1.02 puMIDPOINT 0.0 Mvar 180.6 Mvar 1.06 puPOPULUS 0.0 Mvar 1.00 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.04 puIDAHO-NV 1.01 puKINPORT 177.8 Mvar 1.06 puANTICLIN 0.0 Mvar 1.00 puGOSHEN 0.0 Mvar 1.02 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.01 pu3MIKNOLL 1.05 puAEOLUS 0.0 Mvar 1.04 puBRIDGER 218.4 Mvar 218.4 Mvar -290.8 Mvar 1.09 puMARION -469.2 Mvar 4 7 M W 6 0 M v a r 6 0 2 M W - 1 5 1 M v a r 63 MW -24 Mvar 63 MW -24 Mvar 552 MW -2 Mvar 738 MW -90 Mvar 70 MW -135 Mvar 570 MW -87 Mvar 539 MW -99 Mvar 1129 MW -325 Mvar 31 MW 100 Mvar 1289 MW -94 Mvar 1608 MW 263 Mvar 1 0 3 M W - 4 4 M v a r 1610 MW 229 Mvar 848 MW -60 Mvar 470 MW 48 Mvar 442 MW -100 Mvar 459 MW -107 Mvar 120 MW 54 Mvar 1.04 puANTICLIN 667 MW 71 Mvar 666 MW 71 Mvar 750 MW -84 Mvar 742 MW -127 Mvar 469 MW -53 Mvar 848 MW -60 Mvar 223 MW -65 Mvar 461 MW -14 Mvar 671 MW -104 Mvar 362 MW 33 Mvar 478 MW -99 Mvar 519 MW -106 Mvar 1521 MW 229 Mvar 1284 MW -184 Mvar 316 MW -368 Mvar 548 MW -30 Mvar 153 MW -44 Mvar 196 MW -26 Mvar 168 MW -21 Mvar 5 MW -10 Mvar 109 MW -25 Mvar 1 2 1 M W - 5 3 M v a r 38 MW -37 Mvar 295 MW -68 Mvar 149 MW -63 Mvar 138 MW -43 Mvar 148 MW -40 Mvar 148 MW -43 Mvar 5 9 M W - 1 M v a r HORSEFLT 1.02 puBOISEBCH 0.0 Mvar -77.3 Mvar 1.02 puONTARIO 109 MW -25 Mvar 33 MW -19 Mvar 160 MW -51 Mvar 2 7 1 M W - 2 9 M v a r 197 MW -19 Mvar 72 MW 22 Mvar 36 MW -33 Mvar 36 MW -33 Mvar 36 MW -35 Mvar 41 MW -47 Mvar 70 MW 3 Mvar 91 MW 4 Mvar 1 1 8 M W 9 8 M v a r 1 1 8 M W 9 4 M v a r 550 MW -157 Mvar 1248 MW -350 Mvar 480 MW -55 Mvar 214 MW -44 Mvar 107 MW 78 Mvar 99 MW 23 Mvar 76 MW 76 Mvar 45 MW 19 Mvar 44 MW 19 Mvar 81 MW 52 Mvar 83 MW 53 Mvar 45 MW 60 Mvar 8 6 M W - 1 8 M v a r 831 MW -84 Mvar 1 2 2 M W - 2 2 M v a r 1 1 1 M W - 1 M v a r 7 9 7 M W - 2 5 2 M v a r 798 MW -316 Mvar ID-NW = 3577 MW Grassland = 1368 MW Summer Lake = 1391 MW Lolo = 271 MW Walla Walla = 313 MW LaGrande = 196 MW Midpoint West = 3689 MW Borah West = 3716 MW Idaho-Sierra = 103 MW N of John Day = -781 MW COI = 1017 MW PDCI = 1100 MW ID-MT = 351 MW W of McNary = 1746 MW W of Slatt = 2724 MW Alturas Project = -278 MW Path C = 867 MW Montana Southeast = -539 MW TOT 2B1 = 544 MW TOT 2C = 593 MW 1365 MW -254 Mvar 50 MW -2 Mvar 401 MW -118 Mvar 295 MW -53 Mvar 237 M W 193 M v a r 2 7 9 M W - 2 7 2 M v a r 1 3 6 8 M W - 5 1 5 M v a r 1429 MW 106 Mvar Page 225 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B9: 16la1sa_3400idnw_N Base Case after the contingency N-2: Double Palo Verde 1.08 puMALIN-286.8 Mvar 0.0 Mvar 0.0 Mvar -172.2 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -287.5 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -862.5 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 469.5 Mvar 1.07 puPONDROSA -285.4 Mvar 5 8 7 M W - 2 0 3 M v a r 5 5 2 M W - 2 4 3 M v a r 4 2 M W 1 4 6 M v a r 105 MW -23 Mvar 30 MW -82 Mvar 31 MW -87 Mvar 1396 MW 184 Mvar 1.05 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.09 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.7 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.09 puCOYOTE 1.08 puLOW MON -289.3 Mvar 1.04 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.03 puTALBOT QUARTZTP 1.04 puWALA AVA 1.04 puHURICANE 1.04 puQUARTZ 1.04 puBROWNLEE 0.0 Mvar 130.5 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.04 puHELLSCYN 1.04 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.3 Mvar 1.08 puLIT GOOS 1.04 puOXBOW 1.10 puMIDPOINT 0.0 Mvar 1.10 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.05 puMIDPOINT 0.0 Mvar 191.2 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.04 puADELAIDE 1.06 puIDAHO-NV 1.03 puKINPORT 185.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.9 Mvar 220.9 Mvar -289.6 Mvar 1.09 puMARION -469.5 Mvar 3 9 0 M W 6 2 M v a r 8 8 0 M W - 1 2 2 M v a r 409 MW 0 Mvar 411 MW -0 Mvar 486 MW 5 Mvar 752 MW -74 Mvar 116 MW 49 Mvar 384 MW -15 Mvar 622 MW -94 Mvar 1065 MW -211 Mvar 239 MW -167 Mvar 1121 MW -72 Mvar 1467 MW 124 Mvar 2 3 8 M W - 2 5 M v a r 1469 MW 34 Mvar 759 MW -98 Mvar 383 MW -10 Mvar 398 MW -97 Mvar 414 MW -103 Mvar 17 MW -46 Mvar 1.05 puANTICLIN 655 MW 35 Mvar 655 MW 35 Mvar 655 MW -67 Mvar 648 MW -103 Mvar 369 MW 25 Mvar 759 MW -98 Mvar 256 MW -76 Mvar 420 MW -20 Mvar 642 MW -87 Mvar 339 MW -4 Mvar 432 MW -100 Mvar 469 MW -108 Mvar 1479 MW 140 Mvar 1239 MW -197 Mvar 360 MW -360 Mvar 686 MW -43 Mvar 126 MW -26 Mvar 167 MW -15 Mvar 139 MW -15 Mvar 47 MW 1 Mvar 58 MW -10 Mvar 9 4 M W - 3 1 M v a r 68 MW -26 Mvar 242 MW -41 Mvar 165 MW -61 Mvar 153 MW -40 Mvar 163 MW -37 Mvar 163 MW -40 Mvar 1 M W 2 0 M v a r HORSEFLT 1.04 puBOISEBCH 0.0 Mvar -80.5 Mvar 1.04 puONTARIO 58 MW -10 Mvar 29 MW -13 Mvar 75 MW -3 Mvar 1 7 0 M W - 1 5 M v a r 174 MW -22 Mvar 109 MW 4 Mvar 3 MW 14 Mvar 3 MW 14 Mvar 3 MW 15 Mvar 0 MW 26 Mvar 26 MW 9 Mvar 33 MW 12 Mvar 1 2 0 M W 7 0 M v a r 1 2 0 M W 6 7 M v a r 689 MW -145 Mvar 972 MW -327 Mvar 549 MW -73 Mvar 435 MW -74 Mvar 340 MW 37 Mvar 315 MW -11 Mvar 283 MW 40 Mvar 272 MW -20 Mvar 267 MW -19 Mvar 406 MW 0 Mvar 416 MW -0 Mvar 704 MW -42 Mvar 1 8 M W 4 5 M v a r 933 MW -59 Mvar 5 8 0 M W - 3 2 M v a r 5 4 9 M W - 1 0 M v a r 1 2 4 2 M W - 1 4 2 M v a r 1244 MW -253 Mvar ID-NW = 3160 MW Grassland = 1131 MW Summer Lake = 1396 MW Lolo = 170 MW Walla Walla = 256 MW LaGrande = 167 MW Midpoint West = 3206 MW Borah West = 3358 MW Idaho-Sierra = 238 MW N of John Day = 892 MW COI = 2659 MW PDCI = 1100 MW ID-MT = 206 MW W of McNary = 2169 MW W of Slatt = 3257 MW Alturas Project = -215 MW Path C = 421 MW Montana Southeast = -543 MW TOT 2B1 = 694 MW TOT 2C = 743 MW 1371 MW -134 Mvar 1 MW 50 Mvar 36 MW -70 Mvar 71 MW -11 Mvar 240 M W 137 M v a r 4 1 4 M W - 2 6 3 M v a r 1 1 3 1 M W - 1 6 9 M v a r 1170 MW -29 Mvar Page 226 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Figure B10: 16la1sa_3400idnw_N Base Case after the contingency N-2: Garrison-Taft #1 & #2 1.08 puMALIN-288.8 Mvar 0.0 Mvar 0.0 Mvar -173.4 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -289.6 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -859.9 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 430.6 Mvar 1.07 puPONDROSA -283.7 Mvar 1 6 1 M W - 1 9 7 M v a r 1 2 5 M W - 2 4 2 M v a r 3 8 4 M W - 2 2 4 M v a r 542 MW -106 Mvar 143 MW -99 Mvar 130 MW -101 Mvar 1419 MW 106 Mvar 1.01 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.1 Mvar 1.07 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.8 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.01 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.02 puWALA AVA 1.02 puHURICANE 1.02 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 125.7 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.2 Mvar 1.08 puLIT GOOS 1.02 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.05 puCEDARHIL 0.0 Mvar 1.05 puBORAH 1.01 puMIDPOINT 0.0 Mvar 180.0 Mvar 1.06 puPOPULUS 0.0 Mvar 1.00 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.04 puIDAHO-NV 1.01 puKINPORT 179.1 Mvar 1.06 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.01 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 218.9 Mvar 218.9 Mvar -289.1 Mvar 1.09 puMARION -467.6 Mvar 5 6 M W 5 8 M v a r 6 1 4 M W - 1 5 3 M v a r 53 MW -25 Mvar 53 MW -25 Mvar 555 MW -5 Mvar 743 MW -91 Mvar 74 MW -143 Mvar 573 MW -85 Mvar 545 MW -96 Mvar 1145 MW -330 Mvar 27 MW 99 Mvar 1322 MW -86 Mvar 1627 MW 296 Mvar 1 1 9 M W - 4 6 M v a r 1630 MW 266 Mvar 873 MW -40 Mvar 480 MW 59 Mvar 458 MW -94 Mvar 475 MW -101 Mvar 150 MW 71 Mvar 1.04 puANTICLIN 663 MW 68 Mvar 662 MW 69 Mvar 740 MW -80 Mvar 732 MW -122 Mvar 410 MW -57 Mvar 873 MW -40 Mvar 280 MW -49 Mvar 435 MW -14 Mvar 647 MW -89 Mvar 383 MW 43 Mvar 492 MW -91 Mvar 534 MW -98 Mvar 1510 MW 234 Mvar 1258 MW -164 Mvar 318 MW -364 Mvar 557 MW -33 Mvar 157 MW -46 Mvar 200 MW -27 Mvar 172 MW -21 Mvar 1 MW -5 Mvar 105 MW -20 Mvar 1 2 5 M W - 5 6 M v a r 43 MW -42 Mvar 299 MW -67 Mvar 152 MW -66 Mvar 141 MW -46 Mvar 151 MW -43 Mvar 151 MW -45 Mvar 6 4 M W - 2 M v a r HORSEFLT 1.01 puBOISEBCH 0.0 Mvar -76.9 Mvar 1.02 puONTARIO 105 MW -20 Mvar 32 MW -19 Mvar 159 MW -43 Mvar 2 7 0 M W - 2 4 M v a r 201 MW -17 Mvar 71 MW 23 Mvar 38 MW -34 Mvar 38 MW -34 Mvar 38 MW -36 Mvar 43 MW -49 Mvar 70 MW 3 Mvar 90 MW 5 Mvar 1 2 6 M W 9 6 M v a r 1 2 6 M W 9 2 M v a r 560 MW -157 Mvar 1258 MW -339 Mvar 494 MW -68 Mvar 233 MW -65 Mvar 122 MW 57 Mvar 114 MW 4 Mvar 90 MW 56 Mvar 60 MW -5 Mvar 59 MW -5 Mvar 103 MW 19 Mvar 106 MW 19 Mvar 90 MW -16 Mvar 1 1 5 M W - 1 6 M v a r 845 MW -92 Mvar 1 3 6 M W - 2 6 M v a r 1 2 4 M W - 5 M v a r 8 2 3 M W - 2 6 6 M v a r 824 MW -332 Mvar ID-NW = 3636 MW Grassland = 1392 MW Summer Lake = 1419 MW Lolo = 270 MW Walla Walla = 318 MW LaGrande = 200 MW Midpoint West = 3759 MW Borah West = 3804 MW Idaho-Sierra = 119 MW N of John Day = -757 MW COI = 1078 MW PDCI = 1100 MW ID-MT = 176 MW W of McNary = 1762 MW W of Slatt = 2765 MW Alturas Project = -278 MW Path C = 806 MWMontana Southeast = -557 MW TOT 2B1 = 557 MW TOT 2C = 608 MW 1391 MW -272 Mvar 46 MW -9 Mvar 391 MW -101 Mvar 284 MW -34 Mvar 252 M W 189 M v a r 2 8 3 M W - 2 7 3 M v a r 1 3 9 2 M W - 5 5 6 M v a r 1456 MW 129 Mvar Page 227 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr No Violations BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr No Violations BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV No Violations BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.7 300.0 100.2% 370.0 81.3% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.7 300.0 100.2% 370.0 81.3% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 304.3 300.0 101.4% 370.0 82.2% BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 304.3 300.0 101.4% 370.0 82.2% BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV No Violations BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV No Violations BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations Page 228 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 193.1 264.8 254.0 104.2% 307.0 86.2% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus No Violations BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.4 51.0 50.0 101.9% 55.0 92.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 336.2 300.0 112.1% 370.0 90.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 336.2 300.0 112.1% 370.0 90.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 305.1 300.0 101.7% 370.0 82.5% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 322.3 315.0 102.3% 394.0 81.8% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 321.7 315.0 102.1% 394.0 81.6% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1440.6 2258.5 2000.1 112.9% 3000.0 75.3% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1462.1 2234.5 2000.1 111.7% 3000.0 74.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.4 51.5 50.0 103.0% 55.0 93.7% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 334.4 300.0 111.5% 370.0 90.4% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 334.4 300.0 111.5% 370.0 90.4% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 304.5 300.0 101.5% 370.0 82.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 320.9 315.0 101.9% 394.0 81.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 320.4 315.0 101.7% 394.0 81.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1440.6 2253.8 2000.1 112.7% 3000.0 75.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1462.1 2224.8 2000.1 111.2% 3000.0 74.2% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 303.1 300.0 101.0% 370.0 81.9% BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 303.1 300.0 101.0% 370.0 81.9% BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 193.1 262.2 254.0 103.2% 307.0 85.4% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr STATL C2 (47959) % Δ Volts 1.016 0.962 5.31% Page 229 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr STATL W2 (47571) % Δ Volts 1.002 0.949 5.29% BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 332.2 300.0 110.7% 370.0 89.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 332.2 300.0 110.7% 370.0 89.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.5 121.5 112.0 108.5% 146.7 82.9% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 319.4 315.0 101.4% 394.0 81.1% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 318.8 315.0 101.2% 394.0 80.9% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1532.2 2372.7 1732.1 137.0% 2338.3 101.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 333.9 300.0 111.3% 370.0 90.2% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 333.9 300.0 111.3% 370.0 90.2% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 90.5 122.7 112.0 109.6% 146.7 83.6% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 320.7 315.0 101.8% 394.0 81.4% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 263.7 300.7 300.0 100.2% 370.0 81.3% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 320.1 315.0 101.6% 394.0 81.2% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1532.2 2309.6 1732.1 133.3% 2338.3 98.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 334.9 300.0 111.6% 370.0 90.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 334.9 300.0 111.6% 370.0 90.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 303.7 300.0 101.2% 370.0 82.1% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 321.3 315.0 102.0% 394.0 81.6% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 320.7 315.0 101.8% 394.0 81.4% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1440.6 2335.2 2000.1 116.8% 3000.0 77.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1462.1 2308.3 2000.1 115.4% 3000.0 76.9% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 324.3 300.0 108.1% 370.0 87.7% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 324.3 300.0 108.1% 370.0 87.7% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 301.4 300.0 100.5% 370.0 81.5% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr CEDARHIL (60159) -> CEDHEM21 (61992) CKT 2 at CEDARHIL Branch Amp 1661.2 2454.0 2309.4 106.3% 3464.1 70.8% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr POPULUS (67794) -> POPCED21 (61963) CKT 2 at POPULUS Branch Amp 1663.5 2426.2 2309.4 105.1% 3464.1 70.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 331.4 300.0 110.5% 370.0 89.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 331.4 300.0 110.5% 370.0 89.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 317.7 315.0 100.9% 394.0 80.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 317.2 315.0 100.7% 394.0 80.5% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1346.9 2434.9 1732.1 140.6% 2338.3 104.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1172.4 1891.4 1701.6 111.2% 2108.6 89.7% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1156.6 1873.6 1650.1 113.5% 2227.4 84.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1162.5 1886.4 1492.7 126.4% 2264.2 83.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.993 0.937 5.64% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr AMPS (65025) % Δ Volts 0.991 0.938 5.35% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.991 0.939 5.25% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 348.8 300.0 116.3% 370.0 94.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 348.8 300.0 116.3% 370.0 94.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 331.2 315.0 105.2% 394.0 84.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 330.4 315.0 104.9% 394.0 83.9% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 90.5 122.0 112.0 109.0% 146.7 83.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 301.1 300.0 100.4% 370.0 81.4% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1172.4 1806.0 1701.6 106.1% 2108.6 85.7% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1156.6 1791.3 1650.1 108.6% 2227.4 80.4% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS POPULUS (67790) -> BORPOP11 (61970) CKT 1 at BORPOP11 Branch Amp 1162.5 1804.1 1492.7 120.9% 2264.2 79.7% Page 230 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS AMPS (65025) % Δ Volts 0.991 0.939 5.25% BF Lolo 230kV No Violations BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 332.6 300.0 110.9% 370.0 89.9% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 332.6 300.0 110.9% 370.0 89.9% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 90.5 119.3 112.0 106.5% 146.7 81.3% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 319.6 315.0 101.5% 394.0 81.1% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 319.0 315.0 101.3% 394.0 81.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1532.2 2314.7 1732.1 133.6% 2338.3 99.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts 0.993 0.927 6.65% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.991 0.930 6.16% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV KINGSR S (47177) % Δ Volts 1.024 0.966 5.66% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV MCDERMIT (47189) % Δ Volts 1.026 0.968 5.65% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV FIELDS T (47160) % Δ Volts 1.034 0.977 5.51% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HINES (61825) % Δ Volts 1.038 0.981 5.49% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV CATLOW (47134) % Δ Volts 1.035 0.979 5.41% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV WJOHN DY (61835) % Δ Volts 1.038 0.983 5.30% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HINES (61826) % Δ Volts 1.042 0.988 5.18% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HARNEY (40507) % Δ Volts 1.043 0.989 5.18% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts 0.991 0.940 5.15% BF PGE Grassland-Coyote 500 kV & Carty Gas Project No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen No Violations Bus: Alvey 500 kV No Violations Bus: Bell BPA 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 303.1 300.0 101.0% 370.0 81.9% Bus: Bell BPA 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 303.1 300.0 101.0% 370.0 81.9% Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.4 51.5 50.0 102.9% 55.0 93.6% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 336.2 300.0 112.1% 370.0 90.9% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 336.2 300.0 112.1% 370.0 90.9% Bus: Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 305.6 300.0 101.9% 370.0 82.6% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 322.3 315.0 102.3% 394.0 81.8% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 321.7 315.0 102.1% 394.0 81.6% Bus: Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1440.6 2257.4 2000.1 112.9% 3000.0 75.2% Bus: Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1462.1 2233.6 2000.1 111.7% 3000.0 74.5% N-1: Allston-Keeler 500 kV No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 302.9 300.0 101.0% 370.0 81.9% N-1: Bell-Taft 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 302.9 300.0 101.0% 370.0 81.9% N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations Page 231 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.3 300.0 100.1% 370.0 81.2% N-1: Brady-Antelope 230 kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.3 300.0 100.1% 370.0 81.2% N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Cal Sub 120 kV Phase Shifter No Violations N-1: Captain Jack-Olinda 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 301.3 300.0 100.4% 370.0 81.4% N-1: Captain Jack-Olinda 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 301.3 300.0 100.4% 370.0 81.4% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV No Violations N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV No Violations N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 350.7 315.0 111.3% 394.0 89.0% N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 349.5 315.0 111.0% 394.0 88.7% N-1: Hatwai 500/230 kV Xfmr No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV No Violations N-1: Hatwai-N Lewiston 230 kV No Violations Page 232 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Hells Canyon-Brownlee 230 kV No Violations N-1: Hells Canyon-Walla Walla 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% N-1: Hells Canyon-Walla Walla 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% N-1: Hemingway-Grassland 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.4 54.4 50.0 108.9% 55.0 99.0% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 331.1 300.0 110.4% 370.0 89.5% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 331.1 300.0 110.4% 370.0 89.5% N-1: Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.5 121.5 112.0 108.5% 146.7 82.8% N-1: Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 318.5 315.0 101.1% 394.0 80.8% N-1: Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 318.0 315.0 100.9% 394.0 80.7% N-1: Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1532.2 2303.2 1732.1 133.0% 2338.3 98.5% N-1: Hemingway-Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.4 51.3 50.0 102.6% 55.0 93.3% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 334.5 300.0 111.5% 370.0 90.4% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 334.5 300.0 111.5% 370.0 90.4% N-1: Hemingway-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 263.7 304.0 300.0 101.3% 370.0 82.2% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 321.0 315.0 101.9% 394.0 81.5% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 320.4 315.0 101.7% 394.0 81.3% N-1: Hemingway-Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1440.6 2269.6 2000.1 113.5% 3000.0 75.7% N-1: Hemingway-Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1462.1 2245.9 2000.1 112.3% 3000.0 74.9% N-1: Hill Top 345/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 109.1 169.8 150.0 113.2% 180.0 94.3% N-1: Hill Top 345/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 316.0 421.8 415.7 101.5% 483.5 87.2% N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 360.0 300.0 120.0% 370.0 97.3% N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 360.0 300.0 120.0% 370.0 97.3% N-1: Huntington-Pinto-Four Corners 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 298.4 367.4 357.0 102.9% 415.9 88.3% N-1: Huntington-Pinto-Four Corners 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 298.4 367.4 357.0 102.9% 415.9 88.3% N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.4 50.4 50.0 100.8% 55.0 91.7% N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV No Violations N-1: Malin-Round Mtn #2 500 kV No Violations N-1: Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 303.9 300.0 101.3% 370.0 82.1% N-1: Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 303.9 300.0 101.3% 370.0 82.1% N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations Page 233 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 319.3 300.0 106.4% 370.0 86.3% N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 319.3 300.0 106.4% 370.0 86.3% N-1: Midpoint-Humboldt 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.9 300.0 100.3% 370.0 81.3% N-1: Midpoint-Humboldt 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.9 300.0 100.3% 370.0 81.3% N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV No Violations N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV No Violations N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 357.2 300.0 119.1% 370.0 96.6% N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 357.2 300.0 119.1% 370.0 96.6% N-1: Pinto-Four Corner 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 298.4 364.4 357.0 102.1% 415.9 87.6% N-1: Pinto-Four Corner 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 298.4 364.4 357.0 102.1% 415.9 87.6% N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 330.3 300.0 110.1% 370.0 89.3% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 330.3 300.0 110.1% 370.0 89.3% N-1: Populus-Cedar Hill-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 316.9 315.0 100.6% 394.0 80.4% N-1: Populus-Cedar Hill-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 316.3 315.0 100.4% 394.0 80.3% N-1: Populus-Cedar Hill-Hemingway 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1346.9 2296.5 1732.1 132.6% 2338.3 98.2% N-1: Populus-Cedar Hill-Hemingway 500 kV BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1172.4 1893.1 1701.6 111.3% 2108.6 89.8% N-1: Populus-Cedar Hill-Hemingway 500 kV BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1156.6 1875.2 1650.1 113.6% 2227.4 84.2% N-1: Populus-Cedar Hill-Hemingway 500 kV POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1162.5 1888.0 1492.7 126.5% 2264.2 83.4% N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 350.6 315.0 111.3% 394.0 89.0% N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 349.3 315.0 110.9% 394.0 88.7% N-1: Robinson-Harry Allen 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 109.1 165.9 150.0 110.6% 180.0 92.2% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 334.3 300.0 111.4% 370.0 90.4% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 334.3 300.0 111.4% 370.0 90.4% N-1: Robinson-Harry Allen 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 263.7 328.4 300.0 109.5% 370.0 88.8% N-1: Robinson-Harry Allen 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 257.6 320.5 300.0 106.8% 370.0 86.6% N-1: Robinson-Harry Allen 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 315.1 315.0 100.0% 394.0 80.0% N-1: Robinson-Harry Allen 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 316.0 419.0 415.7 100.8% 483.5 86.7% N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV No Violations N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 318.9 300.0 106.3% 370.0 86.2% N-1: Sigurd-Glen Canyon 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 318.9 300.0 106.3% 370.0 86.2% N-1: Slatt 500/230 kV Xfmr No Violations Page 234 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV No Violations N-1: Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% N-1: Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS No Violations N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV BRIDGER (60085) -> BRI3MI11 (61999) CKT 1 at BRIDGER Branch Amp 1065.7 1764.7 1600.0 110.3% 1840.0 95.9% N-2: Bridger-Populus #1 & #2 345 kV BRI3MI11 (61999) -> 3MIKNOLL (60084) CKT 1 at 3MIKNOLL Branch Amp 1065.7 1738.8 1650.1 105.4% 2227.4 78.1% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> POPBRI11 (61968) CKT 1 at BRIDGER Branch Amp 1022.3 1815.8 1492.7 121.6% 1849.2 98.2% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV POPBRI11 (61968) -> POPULUS (67790) CKT 1 at POPULUS Branch Amp 1011.6 1800.1 1650.1 109.1% 2227.6 80.8% N-2: Broadview-Garrison #1 & #2 500 kV + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.5 126.1 112.0 112.6% 146.7 86.0% N-2: Broadview-Garrison #1 & #2 500 kV + RAS ABSAROKE (62201) % Δ Volts 0.956 0.878 8.16% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLBUSAT (62224) % Δ Volts 0.976 0.901 7.68% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLUMBUS (62015) % Δ Volts 0.979 0.904 7.66% N-2: Broadview-Garrison #1 & #2 500 kV + RAS BGTMBERA (62250) % Δ Volts 1.010 0.936 7.33% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLRPLJE (62220) % Δ Volts 1.001 0.930 7.09% N-2: Broadview-Garrison #1 & #2 500 kV + RAS DUCKCR-R (62325) % Δ Volts 1.016 0.945 6.99% N-2: Broadview-Garrison #1 & #2 500 kV + RAS WILSALL (62019) % Δ Volts 1.037 0.966 6.85% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLRPLJE (62205) % Δ Volts 1.001 0.937 6.39% N-2: Broadview-Garrison #1 & #2 500 kV + RAS WILSALL (62016) % Δ Volts 1.034 0.968 6.38% N-2: Broadview-Garrison #1 & #2 500 kV + RAS CLYDE P (62108) % Δ Volts 1.027 0.966 5.94% N-2: Broadview-Garrison #1 & #2 500 kV + RAS AMPS (65025) % Δ Volts 0.991 0.939 5.25% N-2: Broadview-Garrison #1 & #2 500 kV + RAS THRRIVER (62331) % Δ Volts 1.033 0.979 5.23% N-2: Broadview-Garrison #1 & #2 500 kV + RAS BENCHLND (62230) % Δ Volts 1.030 0.978 5.05% N-2: Broadview-Garrison #1 & #2 500 kV + RAS STANFRDM (62231) % Δ Volts 1.033 0.981 5.03% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations Page 235 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV No Violations N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 326.8 300.0 108.9% 370.0 88.3% N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 326.8 300.0 108.9% 370.0 88.3% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 368.9 300.0 123.0% 370.0 99.7% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 368.9 300.0 123.0% 370.0 99.7% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO Branch MVA 290.6 366.3 315.0 116.3% 394.0 93.0% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO Branch MVA 290.6 364.8 315.0 115.8% 394.0 92.6% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 298.4 377.4 357.0 105.7% 415.9 90.7% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 298.4 377.4 357.0 105.7% 415.9 90.7% N-2: Double Palo Verde CHOLLA (14000) -> CHOSAG11 (14014) CKT 1 at CHOSAG11 Branch Amp 965.8 1059.9 1026.0 103.3% 1538.1 68.9% N-2: Double Palo Verde MONTROSE (79049) % Δ Volts 1.020 0.968 5.10% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS PLACIDLK (62344) % Δ Volts 1.026 0.962 6.24% N-2: Garrison-Taft #1 & #2 500 kV + RAS DIXON MV (40348) % Δ Volts 1.026 0.969 5.56% N-2: Garrison-Taft #1 & #2 500 kV + RAS SUPERRMT (62296) % Δ Volts 1.022 0.967 5.38% N-2: Garrison-Taft #1 & #2 500 kV + RAS RATTLE S (40867) % Δ Volts 1.025 0.970 5.37% N-2: Garrison-Taft #1 & #2 500 kV + RAS DIAMNDMT (62295) % Δ Volts 1.022 0.968 5.28% N-2: Garrison-Taft #1 & #2 500 kV + RAS TARKIO-R (62294) % Δ Volts 1.025 0.971 5.27% N-2: Garrison-Taft #1 & #2 500 kV + RAS HAMLTNMT (62074) % Δ Volts 1.015 0.962 5.22% N-2: Garrison-Taft #1 & #2 500 kV + RAS ST REGIS (62297) % Δ Volts 1.020 0.967 5.20% N-2: Garrison-Taft #1 & #2 500 kV + RAS ALBERTON (62293) % Δ Volts 1.029 0.976 5.15% N-2: Garrison-Taft #1 & #2 500 kV + RAS HUSON-R (62300) % Δ Volts 1.032 0.979 5.14% N-2: Garrison-Taft #1 & #2 500 kV + RAS HAUGEN (62298) % Δ Volts 1.018 0.966 5.11% N-2: Garrison-Taft #1 & #2 500 kV + RAS SALTESE (62299) % Δ Volts 1.017 0.966 5.01% N-2: Garrison-Taft #1 & #2 500 kV + RAS WALDORF (62091) % Δ Volts 1.038 0.986 5.01% N-2: Garrison-Taft #1 & #2 500 kV + RAS FRENCH-R (62292) % Δ Volts 1.038 0.986 5.01% N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 301.2 300.0 100.4% 370.0 81.4% N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 301.2 300.0 100.4% 370.0 81.4% N-2: Grassland-Coyote & Slatt - Longhorn 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 301.6 300.0 100.5% 370.0 81.5% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 301.6 300.0 100.5% 370.0 81.5% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV No Violations N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 310.8 300.0 103.6% 370.0 84.0% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 310.8 300.0 103.6% 370.0 84.0% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 225.8 266.7 252.0 105.8% 271.1 98.4% N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 300.2 300.0 100.1% 370.0 81.1% N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV No Violations N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV No Violations N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV No Violations N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV No Violations Page 236 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Malin-Round Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 316.2 300.0 105.4% 370.0 85.5% N-2: Malin-Round Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 316.2 300.0 105.4% 370.0 85.5% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 320.0 300.0 106.7% 370.0 86.5% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 320.0 300.0 106.7% 370.0 86.5% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 315.5 300.0 105.2% 370.0 85.3% N-2: Round Mtn-Table Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 315.5 300.0 105.2% 370.0 85.3% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 225.8 254.9 252.0 101.1% 271.1 94.0% N-2: Sickler-Schultz & Schultz-Vantage 500 kV No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 314.8 300.0 104.9% 370.0 85.1% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 314.8 300.0 104.9% 370.0 85.1% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 303.0 300.0 101.0% 370.0 81.9% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 303.0 300.0 101.0% 370.0 81.9% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 302.9 300.0 101.0% 370.0 81.9% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 302.9 300.0 101.0% 370.0 81.9% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 225.8 254.1 252.0 100.8% 271.1 93.7% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS DWOR (41201) % Δ Volts 1.0 1.0 5.09% N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 302.9 300.0 101.0% 370.0 81.9% N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 302.9 300.0 101.0% 370.0 81.9% N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 302.8 300.0 100.9% 370.0 81.8% N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 302.8 300.0 100.9% 370.0 81.8% N-2: Taft-Dworshak & Garrison-Taft #1 500kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 295.5 301.2 300.0 100.4% 370.0 81.4% N-2: Taft-Dworshak & Garrison-Taft #1 500kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 295.5 301.2 300.0 100.4% 370.0 81.4% N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 237 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.70 -1142 0.71 -1821 0.75 -1628 0.73 -621 0.70 -719 0.80 -1445 0.90 -1250 0.70 -484 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.70 -1141 0.71 -1833 0.75 -1636 0.73 -627 0.70 -717 0.80 -1452 0.90 -1265 0.70 -486 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.70 -1146 0.70 -1882 0.74 -1681 0.72 -630 0.70 -719 0.80 -1499 0.89 -1276 0.70 -488 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.70 -1143 0.70 -1901 0.74 -1696 0.72 -640 0.70 -717 0.80 -1511 0.89 -1305 0.70 -492 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.70 -1142 0.70 -1912 0.74 -1705 0.72 -632 0.70 -716 0.80 -1519 0.89 -1280 0.70 -490 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.70 -1141 0.70 -1913 0.74 -1704 0.72 -645 0.70 -716 0.80 -1518 0.89 -1319 0.70 -493 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.70 -1139 0.70 -1861 0.74 -1658 0.76 -570 0.70 -714 0.80 -1478 0.89 -857 0.70 -511 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.70 -1137 0.70 -1878 0.74 -1704 0.72 -646 0.70 -712 0.80 -1520 0.89 -1318 0.70 -493 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.70 -1138 0.70 -1933 0.73 -1724 0.72 -651 0.70 -713 0.80 -1537 0.89 -1333 0.70 -495 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.70 -1132 0.70 -1891 0.73 -1719 0.72 -651 0.70 -709 0.80 -1536 0.89 -1329 0.70 -495 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.70 -1141 0.70 -1904 0.74 -1699 0.72 -637 0.70 -715 0.80 -1514 0.89 -1284 0.70 -494 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.70 -1141 0.70 -1901 0.74 -1700 0.73 -623 0.70 -716 0.80 -1517 0.89 -1252 0.70 -489 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.70 -1139 0.70 -1865 0.74 -1661 0.75 -586 0.70 -714 0.80 -1481 0.88 -843 0.70 -512 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.70 -1135 0.71 -1812 0.75 -1617 0.78 -428 0.70 -712 0.80 -1438 0.90 -990 0.75 -455 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500KV + RAS 0.70 -1125 0.72 -1647 0.76 -1487 0.83 -385 0.70 -706 0.81 -1321 0.90 -555 0.74 -500 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.70 -1138 0.70 -1895 0.74 -1700 0.72 -637 0.70 -713 0.80 -1520 0.89 -1295 0.70 -492 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.70 -1141 0.70 -1902 0.74 -1698 0.72 -643 0.70 -715 0.80 -1514 0.89 -1314 0.70 -493 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.70 -1136 0.71 -1838 0.75 -1637 0.77 -507 0.70 -712 0.80 -1454 0.88 -1216 0.73 -492 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.70 -1141 0.70 -1903 0.74 -1699 0.72 -641 0.70 -715 0.80 -1515 0.89 -1305 0.70 -493 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.70 -1136 0.70 -1911 0.74 -1709 0.72 -647 0.70 -712 0.80 -1527 0.89 -1323 0.70 -495 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.70 -1142 0.70 -1910 0.74 -1704 0.72 -642 0.70 -716 0.80 -1518 0.89 -1311 0.70 -492 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.70 -1142 0.70 -1916 0.74 -1707 0.72 -642 0.70 -716 0.80 -1520 0.89 -1312 0.70 -492 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.70 -1142 0.70 -1906 0.74 -1701 0.72 -637 0.70 -716 0.80 -1516 0.89 -1295 0.70 -491 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.70 -1141 0.70 -1884 0.74 -1699 0.72 -644 0.70 -715 0.80 -1517 0.89 -1317 0.70 -492 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.70 -1143 0.72 -1773 0.75 -1591 0.74 -610 0.70 -721 0.81 -1409 0.90 -1225 0.70 -479 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.70 -1142 0.70 -1907 0.74 -1702 0.72 -632 0.70 -716 0.80 -1517 0.89 -1259 0.70 -492 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.70 -1141 0.70 -1903 0.74 -1707 0.72 -650 0.70 -715 0.80 -1519 0.89 -1324 0.70 -494 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.70 -1142 0.70 -1915 0.74 -1706 0.72 -644 0.70 -716 0.80 -1519 0.89 -1312 0.70 -494 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.70 -1142 0.70 -1917 0.74 -1707 0.72 -645 0.70 -716 0.80 -1520 0.89 -1319 0.70 -494 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV 0.70 -1144 0.70 -1911 0.74 -1704 0.72 -635 0.70 -717 0.80 -1517 0.89 -1292 0.70 -490 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -645 0.70 -716 0.80 -1521 0.89 -1318 0.70 -493 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -645 0.70 -716 0.80 -1520 0.89 -1320 0.70 -493 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.70 -1142 0.70 -1913 0.74 -1705 0.72 -642 0.70 -716 0.80 -1518 0.89 -1307 0.70 -493 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -645 0.70 -716 0.80 -1519 0.89 -1315 0.70 -494 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -646 0.70 -716 0.80 -1519 0.89 -1319 0.70 -494 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV 0.70 -1139 0.70 -1897 0.74 -1696 0.72 -646 0.70 -714 0.80 -1513 0.89 -1316 0.70 -495 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.70 -1141 0.70 -1900 0.74 -1699 0.72 -637 0.70 -715 0.80 -1515 0.89 -1296 0.70 -491 BF 4432 OSTRANDER-TROUTDALE & SPLIT OSTRANDER 500 KV 0.70 -1141 0.70 -1886 0.74 -1689 0.72 -634 0.70 -715 0.80 -1508 0.89 -1284 0.70 -492 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.70 -1142 0.70 -1906 0.74 -1701 0.72 -640 0.70 -716 0.80 -1516 0.89 -1303 0.70 -492 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.70 -1142 0.70 -1908 0.74 -1702 0.72 -641 0.70 -716 0.80 -1516 0.89 -1307 0.70 -492 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.70 -1141 0.70 -1903 0.74 -1699 0.72 -641 0.70 -716 0.80 -1514 0.89 -1305 0.70 -493 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.70 -1141 0.70 -1907 0.74 -1701 0.72 -642 0.70 -716 0.80 -1516 0.89 -1308 0.70 -493 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV 0.70 -1141 0.70 -1913 0.74 -1705 0.72 -648 0.70 -716 0.80 -1518 0.89 -1325 0.70 -495 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.70 -1144 0.70 -1911 0.74 -1703 0.72 -635 0.70 -717 0.80 -1517 0.89 -1291 0.70 -490 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV 0.70 -1142 0.70 -1913 0.74 -1704 0.72 -641 0.70 -716 0.80 -1518 0.89 -1304 0.70 -493 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.70 -1143 0.70 -1916 0.74 -1706 0.72 -634 0.70 -716 0.80 -1519 0.89 -1287 0.70 -491 Page 238 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -643 0.70 -716 0.80 -1519 0.89 -1312 0.70 -493 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.70 -1142 0.72 -1754 0.76 -1565 0.74 -593 0.70 -720 0.81 -1383 0.90 -1182 0.71 -469 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.70 -1142 0.72 -1767 0.75 -1575 0.74 -594 0.70 -720 0.81 -1392 0.90 -1186 0.71 -469 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.70 -1142 0.70 -1914 0.74 -1704 0.72 -645 0.70 -716 0.80 -1517 0.89 -1319 0.70 -493 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -641 0.70 -716 0.80 -1519 0.89 -1310 0.70 -492 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.70 -1141 0.70 -1904 0.74 -1701 0.72 -634 0.70 -715 0.80 -1517 0.89 -1267 0.70 -492 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.70 -1142 0.70 -1913 0.74 -1704 0.72 -641 0.70 -716 0.80 -1518 0.89 -1299 0.70 -494 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.70 -1141 0.71 -1824 0.75 -1620 0.78 -526 0.70 -718 0.80 -1436 0.91 -744 0.70 -496 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.70 -1142 0.70 -1911 0.74 -1703 0.72 -640 0.70 -716 0.80 -1517 0.89 -1298 0.70 -493 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.70 -1141 0.70 -1920 0.74 -1708 0.72 -654 0.70 -716 0.80 -1520 0.89 -1335 0.70 -496 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.70 -1142 0.70 -1914 0.74 -1705 0.72 -647 0.70 -716 0.80 -1519 0.89 -1323 0.70 -494 BF 4708 HATWAI 500 KV BUS 0.70 -1136 0.70 -1844 0.74 -1646 0.77 -509 0.70 -712 0.80 -1463 0.88 -750 0.71 -501 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.70 -1141 0.70 -1911 0.74 -1703 0.72 -642 0.70 -716 0.80 -1516 0.89 -1301 0.70 -494 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV 0.70 -1135 0.70 -1850 0.74 -1656 0.73 -621 0.70 -711 0.80 -1474 0.89 -1023 0.70 -511 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.70 -1136 0.70 -1858 0.74 -1662 0.75 -586 0.70 -712 0.80 -1480 0.89 -946 0.70 -507 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.70 -1142 0.70 -1915 0.74 -1707 0.72 -642 0.70 -716 0.80 -1520 0.89 -1311 0.70 -492 BF 4888 ASHE-SLATT & CGS 500 KV 0.70 -1143 0.73 -1678 0.76 -1499 0.76 -560 0.70 -724 0.81 -1320 0.91 -1110 0.72 -450 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.70 -1141 0.70 -1896 0.74 -1697 0.72 -633 0.70 -715 0.80 -1514 0.89 -1269 0.70 -493 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.70 -1142 0.70 -1890 0.74 -1696 0.73 -617 0.70 -716 0.80 -1516 0.90 -1226 0.70 -485 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.70 -1139 0.70 -1893 0.74 -1693 0.72 -642 0.70 -714 0.80 -1510 0.89 -1294 0.70 -496 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.70 -1066 0.70 -1476 0.73 -1562 0.77 -506 0.70 -658 0.81 -1571 0.92 -987 0.73 -423 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.70 -1070 0.71 -1549 0.72 -1635 0.77 -518 0.70 -661 0.81 -1642 0.92 -1012 0.73 -432 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.70 -1143 0.70 -1928 0.74 -1715 0.72 -647 0.70 -717 0.80 -1527 0.89 -1326 0.70 -493 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.70 -1134 0.70 -1886 0.73 -1706 0.72 -636 0.70 -710 0.80 -1533 0.89 -1292 0.70 -491 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.70 -1129 0.70 -1882 0.73 -1716 0.73 -618 0.70 -706 0.80 -1550 0.90 -1239 0.70 -485 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.70 -1137 0.70 -1900 0.74 -1705 0.72 -636 0.70 -712 0.80 -1524 0.89 -1283 0.70 -493 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.70 -1138 0.70 -1897 0.73 -1708 0.73 -627 0.70 -713 0.80 -1528 0.89 -1263 0.70 -489 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.70 -1138 0.70 -1906 0.74 -1708 0.72 -640 0.70 -713 0.80 -1525 0.89 -1301 0.70 -493 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.70 -1141 0.70 -1882 0.74 -1694 0.72 -637 0.70 -715 0.80 -1518 0.89 -1300 0.70 -490 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.70 -1141 0.70 -1898 0.74 -1696 0.72 -643 0.70 -715 0.80 -1513 0.89 -1312 0.70 -493 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -642 0.70 -716 0.80 -1520 0.89 -1311 0.70 -493 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.70 -1142 0.70 -1912 0.74 -1704 0.72 -641 0.70 -716 0.80 -1517 0.89 -1304 0.70 -493 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.70 -1141 0.70 -1901 0.74 -1696 0.72 -632 0.70 -715 0.80 -1512 0.89 -1268 0.70 -494 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.70 -1142 0.70 -1910 0.74 -1704 0.73 -625 0.70 -716 0.80 -1518 0.89 -1262 0.70 -489 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.70 -1142 0.70 -1912 0.74 -1705 0.72 -634 0.70 -716 0.80 -1518 0.89 -1285 0.70 -491 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.70 -1141 0.70 -1896 0.74 -1705 0.72 -641 0.70 -715 0.80 -1522 0.89 -1307 0.70 -493 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.70 -1142 0.71 -1760 0.75 -1592 0.73 -618 0.70 -719 0.81 -1415 0.90 -1246 0.70 -482 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.70 -1141 0.70 -1895 0.74 -1700 0.72 -634 0.70 -715 0.80 -1517 0.89 -1266 0.70 -491 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.70 -1143 0.72 -1762 0.76 -1581 0.74 -606 0.70 -720 0.81 -1401 0.90 -1202 0.70 -479 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.70 -1141 0.70 -1906 0.74 -1701 0.72 -644 0.70 -715 0.80 -1516 0.89 -1308 0.70 -495 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.70 -1142 0.70 -1908 0.74 -1702 0.72 -638 0.70 -716 0.80 -1517 0.89 -1294 0.70 -492 BF 5266 SLATT-BUCKLY 500 KV 0.70 -1138 0.70 -1914 0.73 -1710 0.72 -646 0.70 -713 0.80 -1525 0.89 -1317 0.70 -495 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.70 -1142 0.70 -1915 0.74 -1706 0.72 -636 0.70 -716 0.80 -1519 0.89 -1294 0.70 -491 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.70 -1142 0.70 -1912 0.74 -1705 0.72 -632 0.70 -716 0.80 -1519 0.89 -1280 0.70 -490 BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.70 -1073 0.70 -1074 0.74 -1286 0.80 -450 0.70 -664 0.83 -1343 0.94 -870 0.75 -381 BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR + RAS 0.70 -1069 0.70 -964 0.73 -1269 0.80 -443 0.70 -661 0.83 -1321 0.94 -856 0.75 -378 Page 239 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.70 -1069 0.70 -1296 0.73 -1490 0.77 -501 0.70 -660 0.82 -1511 0.92 -979 0.74 -419 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.70 -1088 0.70 -1148 0.73 -1294 0.77 -510 0.70 -675 0.78 -1220 0.92 -1008 0.73 -427 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR 0.70 -1076 0.70 -1423 0.74 -1224 0.79 -466 0.70 -665 0.82 -1133 0.94 -914 0.75 -386 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.70 -1039 0.70 -1335 0.73 -992 0.82 -380 0.70 -635 0.83 -1082 0.95 -736 0.77 -330 BF LOLO 230KV 0.70 -1136 0.70 -1873 0.74 -1691 0.73 -623 0.70 -712 0.80 -1514 0.90 -1258 0.70 -484 BF PGE GRASSLAND-CEDAR SPRING & HEMINGWAY-GRASSLAND 500 KV 0.70 -1072 0.70 -1213 0.74 -1334 0.80 -428 0.70 -663 0.82 -1388 0.94 -827 0.76 -373 BF PGE GRASSLAND-COYOTE 500 KV & CARTY GAS PROJECT 0.70 -1142 0.70 -1876 0.74 -1692 0.72 -644 0.70 -716 0.80 -1511 0.89 -1318 0.70 -493 BF PGE SLATT-GRASSLAND 500 KV & BOARDMAN COAL GEN 0.70 -1139 0.71 -1734 0.75 -1570 0.74 -609 0.70 -717 0.81 -1403 0.90 -1230 0.70 -479 BUS: ALVEY 500 KV 0.70 -1141 0.70 -1902 0.74 -1699 0.72 -643 0.70 -715 0.80 -1514 0.89 -1311 0.70 -493 BUS: BELL BPA 500 KV 0.70 -1128 0.71 -1720 0.75 -1552 0.80 -448 0.70 -707 0.80 -1384 0.88 -595 0.73 -498 BUS: BUCKLEY 500 KV 0.70 -1137 0.70 -1887 0.74 -1693 0.72 -636 0.70 -713 0.80 -1513 0.89 -1288 0.70 -492 BUS: DIXONVILLE 500 KV 0.70 -1142 0.70 -1906 0.74 -1700 0.72 -642 0.70 -716 0.80 -1514 0.89 -1312 0.70 -492 BUS: HOT SPRINGS 500 KV 0.70 -1142 0.70 -1921 0.74 -1710 0.71 -661 0.70 -716 0.80 -1523 0.88 -1335 0.70 -495 BUS: KEELER 500 KV 0.70 -1142 0.70 -1913 0.74 -1705 0.72 -648 0.70 -716 0.80 -1518 0.89 -1325 0.70 -494 BUS: ROCK CREEK 500 KV 0.70 -1141 0.70 -1889 0.74 -1686 0.72 -635 0.70 -716 0.80 -1501 0.89 -1288 0.70 -491 BUS: SICKLER 500 KV 0.70 -1142 0.70 -1913 0.74 -1705 0.72 -642 0.70 -716 0.80 -1518 0.89 -1307 0.70 -494 BUS: SUMMER LAKE 500 KV 0.70 -1066 0.70 -1478 0.73 -1564 0.77 -507 0.70 -658 0.81 -1573 0.92 -990 0.73 -425 N-1: ALLSTON-KEELER 500 KV 0.70 -1141 0.70 -1913 0.74 -1705 0.72 -649 0.70 -716 0.80 -1518 0.89 -1328 0.70 -495 N-1: ALLSTON-NAPAVINE 500 KV 0.70 -1142 0.70 -1914 0.74 -1705 0.72 -647 0.70 -716 0.80 -1518 0.89 -1324 0.70 -494 N-1: ALLSTON-PAUL #2 500 KV 0.70 -1142 0.70 -1914 0.74 -1705 0.72 -647 0.70 -716 0.80 -1519 0.89 -1323 0.70 -494 N-1: ALVERY-DIXONVILLE 500 KV 0.70 -1142 0.70 -1910 0.74 -1702 0.72 -644 0.70 -716 0.80 -1517 0.89 -1316 0.70 -493 N-1: ALVEY-MARION 500 KV 0.70 -1140 0.70 -1914 0.74 -1706 0.72 -646 0.70 -715 0.80 -1520 0.89 -1321 0.70 -494 N-1: ASHE-HANFORD 500 KV 0.70 -1141 0.70 -1903 0.74 -1701 0.73 -624 0.70 -716 0.80 -1518 0.89 -1256 0.70 -489 N-1: ASHE-LOW MON 500 KV 0.70 -1141 0.70 -1909 0.74 -1702 0.72 -641 0.70 -715 0.80 -1516 0.89 -1297 0.70 -495 N-1: ASHE-MARION 500 KV 0.70 -1140 0.70 -1901 0.74 -1698 0.72 -646 0.70 -715 0.80 -1513 0.89 -1317 0.70 -495 N-1: ASHE-SLATT 500 KV 0.70 -1142 0.70 -1904 0.74 -1702 0.72 -637 0.70 -716 0.80 -1518 0.89 -1291 0.70 -492 N-1: BELL-COULEE 500 KV 0.70 -1137 0.70 -1858 0.74 -1660 0.73 -611 0.70 -712 0.80 -1478 0.88 -1038 0.70 -511 N-1: BELL-TAFT 500 KV 0.70 -1129 0.71 -1721 0.75 -1553 0.80 -442 0.70 -707 0.80 -1386 0.88 -587 0.74 -494 N-1: BIG EDDY-CELILO 500 KV 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -646 0.70 -716 0.80 -1520 0.89 -1321 0.70 -493 N-1: BIG EDDY-JOHN DAY 500 KV 0.70 -1142 0.70 -1916 0.74 -1707 0.72 -642 0.70 -716 0.80 -1520 0.89 -1312 0.70 -492 N-1: BIG EDDY-KNIGHT 500 KV 0.70 -1142 0.70 -1914 0.74 -1705 0.72 -643 0.70 -716 0.80 -1519 0.89 -1315 0.70 -492 N-1: BIG EDDY-OSTRANDER 500 KV 0.70 -1142 0.70 -1909 0.74 -1703 0.72 -641 0.70 -716 0.80 -1517 0.89 -1306 0.70 -492 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.70 -1141 0.70 -1886 0.74 -1678 0.72 -644 0.70 -716 0.80 -1506 0.89 -1318 0.70 -493 N-1: BRADY-ANTELOPE 230 KV + RAS 0.70 -1134 0.70 -1835 0.73 -1647 0.72 -617 0.70 -709 0.80 -1487 0.90 -1324 0.70 -479 N-1: BROADVIEW-GARRISON #1 500 KV 0.70 -1137 0.73 -1773 0.76 -1597 0.81 -383 0.70 -713 0.81 -1408 0.95 -764 0.81 -380 N-1: BROWNLEE-ONTARIO 230 KV 0.70 -1142 0.70 -1873 0.74 -1673 0.72 -644 0.70 -716 0.80 -1501 0.89 -1318 0.70 -493 N-1: BUCKLEY-GRIZZLY 500 KV 0.70 -1140 0.70 -1911 0.74 -1703 0.72 -646 0.70 -715 0.80 -1518 0.89 -1319 0.70 -494 N-1: BUCKLEY-MARION 500 KV 0.70 -1141 0.70 -1902 0.74 -1700 0.72 -637 0.70 -715 0.80 -1516 0.89 -1296 0.70 -491 N-1: BUCKLEY-SLATT 500 KV 0.70 -1138 0.70 -1914 0.73 -1710 0.72 -646 0.70 -713 0.80 -1525 0.89 -1317 0.70 -495 N-1: CAL SUB 120 KV PHASE SHIFTER 0.70 -1138 0.70 -1889 0.74 -1688 0.72 -640 0.70 -714 0.80 -1507 0.89 -1308 0.70 -491 N-1: CAPTAIN JACK-OLINDA 500 KV 0.70 -1132 0.70 -1923 0.73 -1724 0.72 -652 0.70 -708 0.80 -1542 0.89 -1332 0.70 -497 N-1: CAPTJACK-KFALLS 500 KV 0.70 -1141 0.70 -1908 0.74 -1702 0.72 -645 0.70 -715 0.80 -1517 0.89 -1319 0.70 -493 N-1: CASCADE CROSSING 500 KV 0.70 -1138 0.70 -1904 0.74 -1706 0.72 -634 0.70 -713 0.80 -1525 0.89 -1286 0.70 -491 N-1: CHIEF JO-COULEE 500 KV 0.70 -1142 0.70 -1911 0.74 -1702 0.72 -641 0.70 -716 0.80 -1516 0.89 -1298 0.70 -494 N-1: CHIEF JO-MONROE 500 KV 0.70 -1142 0.70 -1911 0.74 -1703 0.72 -640 0.70 -716 0.80 -1517 0.89 -1298 0.70 -493 N-1: CHIEF JO-SICKLER 500 KV 0.70 -1142 0.70 -1915 0.74 -1705 0.72 -644 0.70 -716 0.80 -1519 0.89 -1313 0.70 -494 Page 240 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: COULEE-HANFORD 500 KV 0.70 -1142 0.70 -1912 0.74 -1704 0.72 -631 0.70 -716 0.80 -1518 0.89 -1276 0.70 -491 N-1: COULEE-SCHULTZ 500 KV 0.70 -1141 0.70 -1908 0.74 -1701 0.72 -639 0.70 -716 0.80 -1515 0.89 -1292 0.70 -494 N-1: COVINGTON4-RAVER 500 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -645 0.70 -716 0.80 -1520 0.89 -1320 0.70 -493 N-1: COVINGTON5-RAVER 500 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -645 0.70 -716 0.80 -1520 0.89 -1319 0.70 -493 N-1: COYOTE-LONGHORN 500 KV 0.70 -1141 0.70 -1910 0.74 -1710 0.72 -642 0.70 -715 0.80 -1525 0.89 -1312 0.70 -492 N-1: CUSTERW-MONROE 500 KV 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -644 0.70 -716 0.80 -1519 0.89 -1312 0.70 -493 N-1: DIXONVILLE-MERIDIAN 500 KV 0.70 -1142 0.70 -1902 0.74 -1697 0.72 -640 0.70 -716 0.80 -1512 0.89 -1307 0.70 -492 N-1: DRYCREEK-LOLO 230 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -645 0.70 -716 0.80 -1520 0.89 -1319 0.70 -493 N-1: DRYCREEK-N LEWISTON 230 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -645 0.70 -716 0.80 -1520 0.89 -1319 0.70 -493 N-1: DRYCREEK-WALA AVA 230 KV 0.70 -1142 0.70 -1916 0.74 -1707 0.72 -642 0.70 -716 0.80 -1521 0.89 -1310 0.70 -492 N-1: DWORSHAK-HATWAI 500 KV 0.70 -1138 0.70 -1861 0.74 -1653 0.77 -512 0.70 -714 0.80 -1470 0.88 -761 0.71 -500 N-1: DWORSHAK-TAFT 500 KV 0.70 -1139 0.70 -1861 0.74 -1658 0.76 -570 0.70 -714 0.80 -1478 0.89 -857 0.70 -511 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.70 -1142 0.70 -1913 0.74 -1704 0.72 -641 0.70 -716 0.80 -1518 0.89 -1304 0.70 -493 N-1: ECHO LAKE-RAVER 500 KV 0.70 -1142 0.70 -1917 0.74 -1707 0.72 -644 0.70 -716 0.80 -1520 0.89 -1315 0.70 -493 N-1: ECHO LAKE-SCHULTZ 500 KV 0.70 -1142 0.70 -1911 0.74 -1703 0.72 -639 0.70 -716 0.80 -1517 0.89 -1298 0.70 -493 N-1: ECHO LAKE-SNOK TAP 500 KV 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -643 0.70 -716 0.80 -1521 0.89 -1315 0.70 -493 N-1: GARRISON-TAFT #2 500 KV 0.70 -1135 0.71 -1812 0.75 -1617 0.78 -428 0.70 -712 0.80 -1438 0.90 -990 0.75 -455 N-1: GOLDHILL-PLACER 115 KV 0.70 -1142 0.70 -1919 0.74 -1709 0.72 -646 0.70 -716 0.80 -1522 0.89 -1321 0.70 -493 N-1: GRASSLAND-COYOTE 500 KV 0.70 -1142 0.70 -1876 0.74 -1692 0.72 -644 0.70 -716 0.80 -1511 0.89 -1318 0.70 -493 N-1: GRASSLAND-SLATT 500 KV 0.70 -1137 0.70 -1891 0.73 -1706 0.72 -634 0.70 -712 0.80 -1531 0.89 -1290 0.70 -489 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.70 -1141 0.70 -1902 0.74 -1698 0.72 -643 0.70 -715 0.80 -1514 0.89 -1314 0.70 -493 N-1: GRIZZLY-MALIN 500 KV 0.70 -1138 0.70 -1897 0.74 -1697 0.72 -643 0.70 -713 0.80 -1515 0.89 -1311 0.70 -494 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.70 -1142 0.70 -1887 0.74 -1696 0.72 -637 0.70 -716 0.80 -1519 0.89 -1300 0.70 -490 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.70 -1138 0.70 -1896 0.74 -1696 0.72 -644 0.70 -713 0.80 -1515 0.89 -1312 0.70 -494 N-1: GRIZZLY-ROUND BU 500 KV 0.70 -1142 0.70 -1915 0.74 -1706 0.72 -645 0.70 -716 0.80 -1519 0.89 -1319 0.70 -493 N-1: HANFORD-LOW MON 500 KV 0.70 -1141 0.70 -1907 0.74 -1701 0.72 -638 0.70 -715 0.80 -1515 0.89 -1289 0.70 -494 N-1: HANFORD-VANTAGE 500 KV 0.70 -1142 0.70 -1912 0.74 -1705 0.72 -632 0.70 -716 0.80 -1519 0.89 -1280 0.70 -490 N-1: HANFORD-WAUTOMA 500 KV 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -645 0.70 -716 0.80 -1519 0.89 -1315 0.70 -494 N-1: HARRY ALLEN 345 KV PHASE SHIFTER 0.70 -982 0.74 -1517 0.77 -1362 0.74 -584 0.70 -596 0.82 -1232 0.91 -1163 0.71 -467 N-1: HATWAI 500/230 KV XFMR 0.70 -805 0.70 -1892 0.74 -1713 0.72 -641 0.70 -708 0.80 -1523 0.89 -1300 0.70 -492 N-1: HATWAI-LOLO 230 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -644 0.70 -716 0.80 -1520 0.89 -1315 0.70 -493 N-1: HATWAI-LOW GRAN 500 KV 0.70 -1142 0.70 -1916 0.74 -1663 0.74 -586 0.70 -716 0.80 -1481 0.89 -947 0.70 -493 N-1: HATWAI-N LEWISTON 230 KV 0.70 -1136 0.70 -1860 0.74 -1708 0.72 -645 0.70 -712 0.80 -1520 0.89 -1318 0.70 -508 N-1: HELLS CANYON-BROWNLEE 230 KV 0.70 -1142 0.70 -1918 0.74 -1661 0.72 -639 0.70 -716 0.80 -1494 0.89 -1304 0.70 -493 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.70 -1141 0.71 -1839 0.74 -1667 0.73 -619 0.70 -716 0.80 -1500 0.90 -1251 0.70 -490 N-1: HEMINGWAY-GRASSLAND 500 KV 0.70 -1134 0.70 -1831 0.74 -1356 0.80 -458 0.70 -710 0.82 -1410 0.93 -894 0.70 -484 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.70 -1075 0.70 -1235 0.73 -1555 0.77 -503 0.70 -666 0.81 -1563 0.92 -981 0.75 -388 N-1: HILL TOP 345/230 XFMR 0.70 -1070 0.70 -1470 0.74 -1639 0.73 -626 0.70 -660 0.80 -1467 0.90 -1265 0.74 -420 N-1: HORSE HV-MCNARY 230 KV 0.70 -1136 0.70 -1826 0.74 -1707 0.72 -645 0.70 -713 0.80 -1520 0.89 -1319 0.70 -486 N-1: HOT SPRINGS-TAFT 500 KV 0.70 -1141 0.70 -1917 0.74 -1703 0.73 -610 0.70 -716 0.80 -1516 0.89 -1228 0.70 -493 N-1: HUMBOLDT-COYOTE CK 345 KV 0.70 -1142 0.70 -1912 0.75 -1493 0.72 -635 0.70 -716 0.81 -1413 0.89 -1292 0.70 -491 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.70 -1139 0.70 -1849 0.77 -1404 0.74 -596 0.70 -714 0.82 -1277 0.90 -1205 0.70 -493 N-1: ING500-CUSTERW 500 KV 0.70 -1025 0.73 -1560 0.74 -1707 0.72 -645 0.70 -716 0.80 -1520 0.89 -1319 0.70 -476 N-1: JOHN DAY-MARION 500 KV 0.70 -1142 0.70 -1917 0.74 -1699 0.72 -641 0.70 -716 0.80 -1515 0.89 -1305 0.70 -493 N-1: JOHN DAY-ROCK CK 500 KV 0.70 -1141 0.70 -1903 0.74 -1705 0.72 -647 0.70 -715 0.80 -1519 0.89 -1323 0.70 -493 N-1: JOHN DAY-SLATT 500 KV 0.70 -1142 0.70 -1913 0.74 -1712 0.72 -641 0.70 -716 0.80 -1528 0.89 -1306 0.70 -493 Page 241 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: KFALLS-MERIDIAN 500 KV 0.70 -1139 0.70 -1914 0.74 -1680 0.72 -630 0.70 -714 0.80 -1498 0.89 -1275 0.70 -493 N-1: KNIGHT-WAUTOMA 500 KV 0.70 -1146 0.70 -1881 0.74 -1702 0.72 -645 0.70 -719 0.80 -1516 0.89 -1314 0.70 -488 N-1: LAGRANDE-NORTH POWDER 230 KV 0.70 -1141 0.70 -1908 0.74 -1692 0.72 -630 0.70 -715 0.80 -1513 0.89 -1277 0.70 -495 N-1: LANES-MARION 500 KV 0.70 -1137 0.70 -1879 0.74 -1703 0.72 -644 0.70 -712 0.80 -1518 0.89 -1315 0.70 -489 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.70 -1141 0.70 -1910 0.74 -1706 0.72 -643 0.70 -716 0.80 -1519 0.89 -1311 0.70 -493 N-1: LIT GOOSE-LOW MON 500 KV 0.70 -1142 0.70 -1916 0.74 -1705 0.72 -643 0.70 -716 0.80 -1519 0.89 -1308 0.70 -493 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.70 -1142 0.70 -1915 0.74 -1704 0.72 -641 0.70 -716 0.80 -1518 0.89 -1296 0.70 -494 N-1: LOW MON-SAC TAP 500 KV 0.70 -1142 0.70 -1914 0.74 -1707 0.72 -638 0.70 -716 0.80 -1520 0.89 -1282 0.70 -494 N-1: MALIN 500/230 XFMR 0.70 -1142 0.70 -1916 0.74 -1705 0.72 -645 0.70 -716 0.80 -1519 0.89 -1320 0.70 -492 N-1: MALIN-HILLTOP 230 KV 0.70 -1141 0.70 -1915 0.74 -1665 0.72 -634 0.70 -716 0.80 -1487 0.89 -1287 0.70 -493 N-1: MALIN-ROUND MTN #1 500 KV 0.70 -1138 0.70 -1861 0.74 -1711 0.72 -648 0.70 -714 0.80 -1528 0.89 -1324 0.70 -489 N-1: MALIN-ROUND MTN #2 500 KV 0.70 -1137 0.70 -1914 0.74 -1711 0.72 -648 0.70 -712 0.80 -1529 0.89 -1324 0.70 -495 N-1: MALIN-SUMMER LAKE 500 KV 0.70 -1136 0.70 -1914 0.73 -1721 0.72 -643 0.70 -712 0.80 -1554 0.89 -1311 0.70 -495 N-1: MAPLE VLY-ROCKY RH 345 KV 0.70 -1127 0.70 -1885 0.74 -1707 0.72 -644 0.70 -705 0.80 -1520 0.89 -1315 0.70 -494 N-1: MARION-PEARL 500 KV 0.70 -1142 0.70 -1917 0.74 -1704 0.72 -635 0.70 -716 0.80 -1517 0.89 -1291 0.70 -493 N-1: MARION-SANTIAM 500 KV 0.70 -1144 0.70 -1912 0.74 -1706 0.72 -646 0.70 -717 0.80 -1519 0.89 -1321 0.70 -490 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.70 -1142 0.70 -1916 0.74 -1707 0.72 -646 0.70 -716 0.80 -1520 0.89 -1322 0.70 -493 N-1: MCNARY 500/230 KV XFMR 0.70 -1142 0.70 -1918 0.74 -1701 0.72 -644 0.70 -716 0.80 -1518 0.89 -1314 0.70 -493 N-1: MCNARY-BOARD T1 230 KV 0.70 -1141 0.70 -1906 0.73 -1718 0.72 -648 0.70 -715 0.80 -1532 0.89 -1328 0.70 -493 N-1: MCNARY-JOHN DAY 500 KV 0.70 -1142 0.70 -1930 0.74 -1703 0.72 -642 0.70 -715 0.80 -1518 0.89 -1306 0.70 -495 N-1: MCNARY-LONGHORN 500 KV 0.70 -1139 0.70 -1906 0.74 -1704 0.72 -645 0.70 -714 0.80 -1519 0.89 -1318 0.70 -494 N-1: MCNARY-ROSS 345 KV 0.70 -1142 0.70 -1901 0.74 -1704 0.72 -641 0.70 -716 0.80 -1518 0.89 -1306 0.70 -494 N-1: MCNARY-ROUNDUP 230 KV 0.70 -1141 0.70 -1909 0.74 -1693 0.72 -637 0.70 -715 0.80 -1515 0.89 -1298 0.70 -493 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.70 -1139 0.70 -1887 0.74 -1705 0.72 -635 0.70 -714 0.80 -1519 0.89 -1275 0.70 -490 N-1: MIDPOINT-HEMINGWAY 500 KV 0.70 -1142 0.70 -1911 0.72 -1277 0.76 -550 0.70 -716 0.79 -1290 0.91 -1095 0.70 -491 N-1: MIDPOINT-HUMBOLDT 345 KV 0.70 -1098 0.70 -1449 0.74 -1557 0.72 -637 0.70 -683 0.81 -1467 0.89 -1301 0.72 -447 N-1: NAPAVINE-PAUL 500 KV 0.70 -1134 0.71 -1772 0.74 -1708 0.72 -645 0.70 -709 0.80 -1520 0.89 -1319 0.70 -491 N-1: OLYMPIA-PAUL 500 KV 0.70 -1142 0.70 -1918 0.74 -1707 0.72 -643 0.70 -716 0.80 -1519 0.89 -1316 0.70 -493 N-1: ONTARIO-CALDWELL 230 KV 0.70 -1142 0.70 -1919 0.74 -1697 0.72 -645 0.70 -716 0.80 -1515 0.89 -1320 0.70 -493 N-1: OSTRANDER-KNIGHT 500 KV 0.70 -1142 0.70 -1904 0.74 -1701 0.72 -642 0.70 -716 0.80 -1516 0.89 -1309 0.70 -493 N-1: OSTRANDER-PEARL 500 KV 0.70 -1141 0.70 -1906 0.74 -1708 0.72 -646 0.70 -716 0.80 -1521 0.89 -1321 0.70 -493 N-1: OSTRANDER-TROUTDALE 500 KV 0.70 -1142 0.70 -1920 0.74 -1706 0.72 -644 0.70 -716 0.80 -1519 0.89 -1317 0.70 -493 N-1: OXBOW-BROWNLEE #2 230 KV 0.70 -1142 0.70 -1915 0.74 -1705 0.72 -645 0.70 -716 0.80 -1519 0.89 -1320 0.70 -493 N-1: OXBOW-LOLO 230 KV 0.70 -1142 0.70 -1915 0.74 -1688 0.73 -624 0.70 -716 0.80 -1513 0.90 -1261 0.70 -493 N-1: PAUL-SATSOP 500 KV 0.70 -1136 0.70 -1870 0.74 -1706 0.72 -644 0.70 -712 0.80 -1519 0.89 -1316 0.70 -484 N-1: PEARL-KEELER 500 KV 0.70 -1142 0.70 -1916 0.74 -1709 0.72 -644 0.70 -716 0.80 -1522 0.89 -1318 0.70 -493 N-1: PEARL-KEELER 500 KV + RAS 0.70 -1142 0.70 -1920 0.74 -1709 0.72 -644 0.70 -716 0.80 -1522 0.89 -1318 0.70 -493 N-1: PINTO-FOUR CORNER 345 KV 0.70 -1032 0.73 -1588 0.76 -1426 0.73 -601 0.70 -580 0.82 -1297 0.90 -1214 0.70 -480 N-1: PONDEROSA A 500/230 KV XFMR 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -645 0.70 -716 0.80 -1521 0.89 -1320 0.70 -493 N-1: PONDEROSA B 500/230 KV XFMR 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -645 0.70 -716 0.80 -1519 0.89 -1321 0.70 -493 N-1: POPULUS-CEDAR HILL-HEMINGWAY 500 KV 0.70 -1078 0.70 -1564 0.74 -1236 0.79 -483 0.70 -667 0.81 -1139 0.93 -956 0.74 -396 N-1: RAVER-PAUL 500 KV 0.70 -1143 0.70 -1918 0.74 -1707 0.72 -635 0.70 -717 0.80 -1520 0.89 -1291 0.70 -491 N-1: RAVER-TACOMA 500 KV 0.70 -1142 0.70 -1917 0.74 -1707 0.72 -644 0.70 -716 0.80 -1520 0.89 -1317 0.70 -493 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.00 0 0.74 -1519 0.77 -1363 0.74 -584 0.70 -596 0.82 -1233 0.91 -1164 0.71 -467 N-1: ROBINSON-HARRY ALLEN 500 KV 0.70 -1091 0.70 -1824 0.74 -1651 0.72 -628 0.70 -674 0.80 -1494 0.89 -1272 0.70 -489 N-1: ROCK CK-WAUTOMA 500 KV 0.70 -1142 0.70 -1911 0.74 -1704 0.72 -640 0.70 -716 0.80 -1518 0.89 -1301 0.70 -492 Page 242 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: ROUND MTN-TABLE MTN 500 KV 0.70 -1138 0.70 -1922 0.74 -1714 0.72 -648 0.70 -713 0.80 -1529 0.89 -1325 0.70 -495 N-1: ROUNDUP-LAGRANDE 230 KV 0.70 -1138 0.70 -1884 0.74 -1693 0.72 -634 0.70 -713 0.80 -1514 0.89 -1289 0.70 -490 N-1: SCHULTZ-SICKLER 500 KV 0.70 -1142 0.70 -1917 0.74 -1707 0.72 -643 0.70 -716 0.80 -1520 0.89 -1313 0.70 -493 N-1: SCHULTZ-VANTAGE 500 KV 0.70 -1142 0.70 -1915 0.74 -1706 0.72 -637 0.70 -716 0.80 -1519 0.89 -1296 0.70 -491 N-1: SCHULTZ-WAUTOMA 500 KV 0.70 -1142 0.70 -1913 0.74 -1706 0.72 -628 0.70 -716 0.80 -1520 0.89 -1272 0.70 -490 N-1: SIGURD-GLEN CANYON 230 KV 0.70 -1111 0.70 -1844 0.74 -1646 0.72 -635 0.70 -687 0.80 -1472 0.89 -1293 0.70 -490 N-1: SLATT 500/230 KV XFMR 0.70 -1142 0.70 -1914 0.74 -1705 0.72 -645 0.70 -716 0.80 -1519 0.89 -1318 0.70 -493 N-1: SLATT-LONGHORN 500 KV 0.70 -1141 0.70 -1913 0.74 -1706 0.72 -644 0.70 -715 0.80 -1520 0.89 -1315 0.70 -493 N-1: SNOK TAP-SNOKING 500 KV 0.70 -1142 0.70 -1915 0.74 -1705 0.72 -644 0.70 -716 0.80 -1518 0.89 -1315 0.70 -493 N-1: TABLE MTN-TESLA 500 KV 0.70 -1137 0.70 -1931 0.73 -1721 0.72 -650 0.70 -712 0.80 -1534 0.89 -1330 0.70 -495 N-1: TABLE MTN-VACA DIXON 500 KV 0.70 -1133 0.70 -1940 0.73 -1731 0.72 -652 0.70 -710 0.80 -1544 0.89 -1335 0.70 -496 N-1: VANTAGE 500/230 KV XFMR #1 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -645 0.70 -716 0.80 -1520 0.89 -1320 0.70 -493 N-1: VANTAGE 500/230 KV XFMR #2 0.70 -1142 0.70 -1918 0.74 -1708 0.72 -645 0.70 -716 0.80 -1520 0.89 -1320 0.70 -493 N-1: WALLA WALLA-TALBOT 230 KV 0.70 -1142 0.70 -1917 0.74 -1706 0.72 -643 0.70 -716 0.80 -1519 0.89 -1302 0.70 -494 N-1: WALLA WALLA-WALLULA 230 KV 0.70 -1141 0.70 -1910 0.74 -1703 0.72 -642 0.70 -715 0.80 -1518 0.89 -1308 0.70 -493 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.70 -1140 0.70 -1884 0.74 -1690 0.72 -640 0.70 -714 0.80 -1509 0.89 -1289 0.70 -494 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.70 -1139 0.70 -1886 0.74 -1691 0.72 -639 0.70 -714 0.80 -1510 0.89 -1293 0.70 -493 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.70 -1135 0.70 -1898 0.73 -1701 0.72 -647 0.70 -711 0.80 -1520 0.89 -1314 0.70 -497 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.70 -1139 0.70 -1896 0.74 -1696 0.72 -645 0.70 -714 0.80 -1513 0.89 -1311 0.70 -495 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.70 -1137 0.70 -1897 0.74 -1703 0.72 -642 0.70 -712 0.80 -1522 0.89 -1302 0.70 -494 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.70 -1139 0.70 -1891 0.74 -1697 0.72 -633 0.70 -714 0.80 -1515 0.89 -1276 0.70 -492 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.70 -1141 0.70 -1897 0.74 -1699 0.72 -637 0.70 -715 0.80 -1516 0.89 -1287 0.70 -493 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.70 -1132 0.74 -1468 0.77 -1324 0.85 -357 0.70 -717 0.82 -1177 0.91 -368 0.79 -388 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-ROUND BUTTE 230 KV 0.70 -1138 0.70 -1905 0.74 -1707 0.72 -632 0.70 -713 0.80 -1525 0.89 -1282 0.70 -491 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-SANTIAM 230 KV 0.70 -1138 0.70 -1907 0.74 -1707 0.72 -635 0.70 -713 0.80 -1526 0.89 -1287 0.70 -491 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.70 -1142 0.70 -1906 0.74 -1701 0.72 -640 0.70 -716 0.80 -1516 0.89 -1304 0.70 -492 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.70 -1142 0.70 -1907 0.74 -1702 0.72 -639 0.70 -716 0.80 -1516 0.89 -1303 0.70 -492 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.70 -1140 0.71 -1796 0.74 -1600 0.72 -641 0.70 -715 0.81 -1467 0.89 -1312 0.70 -492 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.70 -1140 0.71 -1793 0.74 -1598 0.72 -641 0.70 -715 0.81 -1466 0.89 -1312 0.70 -492 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.70 -1142 0.79 -1509 0.81 -1283 0.77 -552 0.70 -720 0.84 -906 0.92 -1099 0.72 -435 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.70 -1141 0.79 -1452 0.81 -1236 0.76 -583 0.70 -719 0.84 -861 0.91 -1154 0.71 -440 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.70 -1142 0.85 -1198 0.83 -1205 0.83 -378 0.70 -727 0.86 -1030 0.91 -1394 0.92 -140 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.70 -1134 0.71 -1765 0.74 -1632 0.73 -612 0.70 -711 0.80 -1483 0.90 -1242 0.70 -478 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.70 -1141 0.71 -1835 0.74 -1658 0.72 -639 0.70 -716 0.80 -1493 0.89 -1303 0.70 -489 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.70 -1140 0.70 -1886 0.74 -1691 0.72 -629 0.70 -715 0.80 -1510 0.89 -1273 0.70 -490 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.70 -1141 0.70 -1905 0.74 -1699 0.72 -638 0.70 -716 0.80 -1514 0.89 -1288 0.70 -494 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.70 -1141 0.70 -1907 0.74 -1700 0.72 -638 0.70 -716 0.80 -1515 0.89 -1289 0.70 -493 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.70 -1142 0.70 -1910 0.74 -1702 0.72 -640 0.70 -716 0.80 -1516 0.89 -1297 0.70 -493 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.70 -1142 0.70 -1912 0.74 -1704 0.72 -642 0.70 -716 0.80 -1517 0.89 -1304 0.70 -494 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.70 -1141 0.70 -1909 0.74 -1701 0.72 -639 0.70 -716 0.80 -1515 0.89 -1291 0.70 -494 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.70 -1143 0.70 -1905 0.74 -1701 0.73 -607 0.70 -717 0.80 -1517 0.90 -1202 0.70 -485 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.70 -1140 0.70 -1891 0.74 -1688 0.72 -634 0.70 -715 0.80 -1505 0.89 -1259 0.70 -497 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.70 -1142 0.70 -1915 0.74 -1705 0.72 -643 0.70 -716 0.80 -1519 0.89 -1310 0.70 -494 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.70 -1142 0.70 -1911 0.73 -1764 0.71 -669 0.70 -716 0.79 -1577 0.88 -1375 0.70 -494 N-2: DC-BIPOLE 0.70 -1090 0.70 -2163 0.71 -1924 0.70 -722 0.70 -674 0.78 -1722 0.87 -1498 0.70 -521 N-2: DOUBLE PALO VERDE 0.70 -1007 0.70 -2134 0.72 -1901 0.70 -715 0.70 -575 0.79 -1665 0.87 -1473 0.70 -524 Page 243 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.70 -1142 0.70 -1913 0.74 -1704 0.72 -641 0.70 -716 0.80 -1518 0.89 -1303 0.70 -493 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.70 -1142 0.70 -1911 0.74 -1703 0.72 -640 0.70 -716 0.80 -1517 0.89 -1297 0.70 -493 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.70 -1131 0.75 -1458 0.79 -1311 0.83 -296 0.70 -716 0.82 -1160 0.85 -1475 0.81 -354 N-2: GRASSLAND-CEDAR SPRING & SLATT - BUCKLEY 500 KV 0.70 -1132 0.70 -1910 0.73 -1717 0.72 -637 0.70 -709 0.80 -1536 0.89 -1287 0.70 -493 N-2: GRASSLAND-COYOTE & SLATT - LONGHORN 500 KV 0.70 -1141 0.70 -1833 0.74 -1669 0.72 -646 0.70 -715 0.80 -1496 0.89 -1317 0.70 -495 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV 0.70 -1131 0.70 -1879 0.74 -1635 0.73 -621 0.70 -708 0.80 -1460 0.90 -1240 0.70 -496 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV 0.70 -1139 0.70 -1863 0.75 -1627 0.73 -609 0.70 -714 0.81 -1455 0.90 -1222 0.70 -490 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV 0.70 -1115 0.70 -1877 0.74 -1677 0.73 -622 0.70 -695 0.80 -1516 0.89 -1245 0.70 -497 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.70 -1138 0.70 -1865 0.74 -1680 0.74 -589 0.70 -713 0.80 -1503 0.90 -1143 0.71 -481 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.70 -1140 0.70 -1907 0.74 -1701 0.72 -643 0.70 -715 0.80 -1516 0.89 -1301 0.70 -496 N-2: HELLS CANYON-BROWNLEE & OXBOW-LOLO 230 KV 0.70 -1134 0.70 -1785 0.74 -1652 0.73 -617 0.70 -710 0.80 -1503 0.90 -1249 0.70 -481 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.70 -1144 0.70 -1902 0.74 -1699 0.73 -615 0.70 -718 0.80 -1515 0.90 -1228 0.70 -485 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.70 -1141 0.70 -1899 0.74 -1697 0.72 -637 0.70 -715 0.80 -1514 0.89 -1294 0.70 -492 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV 0.70 -1138 0.70 -1877 0.74 -1683 0.72 -643 0.70 -713 0.80 -1505 0.89 -1311 0.70 -494 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV 0.70 -1138 0.70 -1893 0.74 -1693 0.72 -645 0.70 -713 0.80 -1511 0.89 -1316 0.70 -494 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.70 -1140 0.70 -1886 0.74 -1691 0.72 -629 0.70 -715 0.80 -1510 0.89 -1273 0.70 -490 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.70 -1143 0.70 -1895 0.74 -1694 0.72 -630 0.70 -717 0.80 -1511 0.89 -1275 0.70 -490 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.70 -1141 0.70 -1904 0.74 -1701 0.72 -642 0.70 -715 0.80 -1516 0.89 -1309 0.70 -492 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.70 -1142 0.70 -1921 0.74 -1711 0.72 -645 0.70 -716 0.80 -1524 0.89 -1318 0.70 -493 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.70 -1141 0.70 -1893 0.74 -1693 0.72 -635 0.70 -715 0.80 -1510 0.89 -1287 0.70 -491 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.70 -1140 0.70 -1897 0.74 -1697 0.72 -637 0.70 -715 0.80 -1513 0.89 -1293 0.70 -492 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.70 -1141 0.70 -1907 0.74 -1702 0.72 -643 0.70 -715 0.80 -1517 0.89 -1310 0.70 -494 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.70 -1135 0.70 -1850 0.74 -1656 0.73 -621 0.70 -711 0.80 -1474 0.89 -1023 0.70 -511 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.70 -1104 0.70 -1960 0.72 -1786 0.71 -669 0.70 -688 0.79 -1617 0.88 -1370 0.70 -506 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.70 -1139 0.70 -1899 0.74 -1700 0.72 -645 0.70 -714 0.80 -1516 0.89 -1312 0.70 -494 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.70 -1139 0.70 -1903 0.74 -1702 0.72 -641 0.70 -713 0.80 -1518 0.89 -1302 0.70 -494 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.70 -1138 0.70 -1896 0.74 -1699 0.72 -636 0.70 -713 0.80 -1515 0.89 -1289 0.70 -493 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.70 -1140 0.70 -1907 0.74 -1703 0.72 -640 0.70 -715 0.80 -1517 0.89 -1303 0.70 -492 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.70 -1097 0.70 -1441 0.72 -1261 0.76 -534 0.70 -682 0.79 -1272 0.92 -1057 0.73 -438 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.70 -1141 0.70 -1908 0.74 -1701 0.72 -638 0.70 -716 0.80 -1515 0.89 -1290 0.70 -493 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV 0.70 -1139 0.70 -1892 0.74 -1685 0.71 -665 0.70 -714 0.80 -1503 0.89 -1362 0.70 -499 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV 0.70 -1141 0.70 -1909 0.74 -1701 0.72 -652 0.70 -715 0.80 -1515 0.89 -1335 0.70 -496 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.70 -1143 0.70 -1917 0.74 -1707 0.72 -636 0.70 -716 0.80 -1520 0.89 -1291 0.70 -491 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV 0.70 -1142 0.70 -1920 0.74 -1710 0.72 -644 0.70 -716 0.80 -1522 0.89 -1317 0.70 -493 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.70 -1142 0.70 -1917 0.74 -1707 0.72 -644 0.70 -716 0.80 -1520 0.89 -1317 0.70 -493 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.70 -1142 0.70 -1920 0.74 -1708 0.72 -646 0.70 -716 0.80 -1520 0.89 -1323 0.70 -493 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.70 -1142 0.70 -1917 0.74 -1706 0.72 -645 0.70 -716 0.80 -1519 0.89 -1318 0.70 -493 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.70 -1142 0.70 -1914 0.74 -1705 0.72 -641 0.70 -716 0.80 -1519 0.89 -1306 0.70 -493 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.70 -1143 0.70 -1917 0.74 -1707 0.72 -635 0.70 -716 0.80 -1520 0.89 -1290 0.70 -491 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.70 -1142 0.70 -1915 0.74 -1705 0.72 -633 0.70 -716 0.80 -1519 0.89 -1281 0.70 -491 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.70 -1143 0.70 -1922 0.74 -1710 0.72 -634 0.70 -716 0.80 -1523 0.89 -1287 0.70 -491 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.70 -1141 0.70 -1900 0.74 -1696 0.72 -633 0.70 -715 0.80 -1512 0.89 -1272 0.70 -493 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.70 -1142 0.70 -1915 0.74 -1705 0.72 -644 0.70 -716 0.80 -1518 0.89 -1315 0.70 -493 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.70 -1142 0.70 -1916 0.74 -1706 0.72 -644 0.70 -716 0.80 -1518 0.89 -1316 0.70 -493 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV 0.70 -1105 0.70 -2006 0.72 -1807 0.71 -675 0.70 -689 0.79 -1623 0.88 -1393 0.70 -507 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV 0.70 -1143 0.70 -1911 0.74 -1705 0.73 -605 0.70 -717 0.80 -1519 0.90 -1203 0.70 -483 Page 244 of 776 Appendix B - 16la1sa_3400idnw_N Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Harry Allen Hemingway Midpoint Mill Creek Pinto Populus Taft Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV 0.70 -1142 0.70 -1914 0.74 -1706 0.72 -635 0.70 -716 0.80 -1519 0.89 -1289 0.70 -491 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.70 -1106 0.70 -2018 0.74 -1694 0.72 -642 0.70 -690 0.80 -1511 0.89 -1312 0.70 -506 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.70 -1128 0.71 -1720 0.75 -1553 0.80 -440 0.70 -707 0.80 -1385 0.89 -584 0.74 -493 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV + RAS 0.70 -1127 0.72 -1646 0.75 -1526 0.77 -539 0.70 -708 0.80 -1361 0.87 -718 0.75 -475 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.70 -1129 0.71 -1721 0.75 -1553 0.80 -442 0.70 -707 0.80 -1386 0.88 -587 0.74 -494 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV + RAS 0.70 -1128 0.72 -1686 0.75 -1572 0.76 -556 0.70 -707 0.80 -1405 0.87 -749 0.75 -481 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.70 -1132 0.72 -1743 0.75 -1552 0.79 -468 0.70 -709 0.81 -1380 0.88 -711 0.77 -449 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.70 -1142 0.70 -1911 0.74 -1704 0.72 -639 0.70 -716 0.80 -1519 0.89 -1297 0.70 -492 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.70 -1142 0.70 -1911 0.74 -1704 0.72 -639 0.70 -716 0.80 -1519 0.89 -1297 0.70 -492 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.70 -1141 0.70 -1899 0.74 -1696 0.72 -636 0.70 -715 0.80 -1511 0.89 -1279 0.70 -493 Page 245 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B11: N-1 loss of Hemingway-Boardman 500 kV Page 246 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B12: N-1 loss of Hemingway-Midpoint 500 kV Page 247 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B13: N-1 loss of Hemingway-Populus 500 kV Page 248 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B14: N-1 loss of Hemingway-Summer Lake 500 kV Page 249 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B15: Breaker Failure loss of Hemingway-Boardman 500 kV and Hemingway 500/230 kV Transformer Page 250 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B16: Breaker Failure loss of Hemingway-Midpoint 500 kV and Hemingway 500/230 kV Transformer Page 251 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B17: Breaker Failure loss of Hemingway-Populus 500 kV and Hemingway 500/230 kV Transformer Page 252 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B18: Breaker Failure loss of Hemingway-Summer Lake 500 kV and Hemingway 500/230 kV Transformer Page 253 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Plots Figure B19: Breaker Failure loss of Midpoint-500 kV Bus Page 254 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Transient Stability Results Lowest Swing Lowest RAS Actions Lowest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 305 LaGrande 52 Mvar 230 kV MSC Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Arapasub 115 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV 305 Peterson 31.7 Mvar 230 kV MSC -11.0% 0.880 -11.2% 59.928 Damped Hemingway 500 kV N-1 Ptrsnflt 230 Chromeat 100 W John Dy 138 Arapasub 115 Stable & 3 Cy 3PH Hemingway-Summer Lake 500 kV None -7.8% 0.909 -7.2% 59.932 Damped Hemingway 500 kV N-1 Cedarhil 500 Chromeat 100 Bowmont 138 Waanibe 115 Stable & 3 Cy 3PH Hemingway-Midpoint 500 kV None -8.6% 0.910 -6.9% 59.940 Damped Midpoint 500 kV N-1 123 Midpoint 500 kV 200 Mvar MSC Midpoint 500 Scoville 138 Amps 69 NSS2 69 Stable & 3 Cy 3PH Hemingway-Populus 500 kV 243 Borah 345 kV 175 Mvar MSC -12.8% 0.855 -12.8% 59.892 Damped Populus 500 kV Breaker Failure Hemingway-Grassland 500 kV 305 LaGrande 52 Mvar 230 kV MSC Ptrsnflt 230 Ptrsnflt 230 Ptrsnftrg 69 Smokyhlw 115 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr 305 Peterson 31.7 Mvar 230 kV MSC -11.3% 0.878 -11.4% 59.922 Damped Hemingway 500 kV Breaker Failure Hemingway-Summer Lake 500 kV Ptrsnflt 230 Chromeat 100 W John Dy 138 Arapasub 115 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr None -6.3% 0.909 -6.4% 59.928 Damped Hemingway 500 kV Breaker Failure Hemingway-Midpoint 500 kV Ptrsnflt 230 Chromeat 100 Ptrsnftrg 69 Arapasub 115 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr None -7.8% 0.906 -7.9% 59.935 Damped Hemingway 500 kV Breaker Failure Hemingway-Populus 500 kV 123 Midpoint 500 kV 200 Mvar MSC Midpoint 500 Scoville 138 Amps 69 Arapasub 115 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr 243 Borah 345 kV 175 Mvar MSC -13.5% 0.853 -13.7% 59.893 Damped Hemingway 500 kV Breaker Failure Midpoint-Hemingway 500 kV Cedarhil 500 Chromeat 100 Ptrsnftrg 69 Arapasub 115 Stable & 3/10 Cy SLG Midpoint 500/345 kV Xfmr None -8.8% 0.910 -7.0% 59.944 Damped Midpoint 500 kV Open Midpoint-Borah 500kV Page 255 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt HOT SPR_500.0 (40553) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt HOT SPR_500.0 (40553) #s BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 Page 256 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 109.8 MVR BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 Page 257 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 Page 258 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 15.9 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS BYPASS SeriesCap MIDPOINT_500.0 (60240) TO MIDHEM11_500.0 (61988) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 15.9 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BYPASS SeriesCap MIDPOINT_500.0 (60240) TO MIDHEM11_500.0 (61988) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 Bus: Alvey 500 kV OPEN Bus ALVEY_500.0 (40051) Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV OPEN Bus KEELER_500.0 (40601) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Page 259 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) N-1: Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV + RAS OPEN Bus MLCK PHA_230.0 (62355) N-1: Brady-Antelope 230 kV + RAS OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Brady-Antelope 230 kV + RAS OPEN Shunt AMPS_ 69.0 (65026) #1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Broadview-Garrison #1 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Cal Sub 120 kV Phase Shifter OPEN Transformer CAL SUB_120.0 (64025) TO CAL S PS_120.0 (64023) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Grassland-Coyote 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 Page 260 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 2 N-1: Hatwai 500/230 kV Xfmr OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 13 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 Page 261 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 2_ 13.8 (66228) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 3_ 13.8 (66229) #1 N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Pinto-Four Corner 345 kV OPEN Shunt PINTO_138.0 (66230) #1 N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine CEDARHIL_500.0 (60159) TO HEMINWAY_500.0 (60155) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine POPULUS_500.0 (67794) TO CEDARHIL_500.0 (60159) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Red Butte-Harry Allen 345 kV OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS CLOSE Shunt GARRISON_500.0 (40459) #r N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 Page 262 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR1EAST_500.0 (40451) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR2EAST_500.0 (40453) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN1_500.0 (62013) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN2_500.0 (62012) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT1_ 13.8 (62332) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT2_ 13.8 (62333) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS BZ EGALL_ 50.0 (62348) TO 20.4 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS JACKRABB_ 50.0 (62349) TO 19.7 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS TAFT_500.0 (41057) TO -186 MVR N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) Page 263 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Double Palo Verde CLOSE Shunt ROBINSON_345.0 (64885) #b1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS DURANGO_115.0 (79023) TO 40 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PINTO_138.0 (66230) TO 64 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS YORKCANY_115.0 (12091) TO 15 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Bus IMNAHA_230.0 (60278) N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 Page 264 of 776 Appendix B - 16la1sa_3400idnw_N Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #s N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 Page 265 of 776 Appendix C 16hs2a_3400WoH_2250idnw_N Base Case (West of Hatwai, Path 8) Page 266 of 776 Appendix C– 16hs2sa_3400WoH_2250idnw_N Case Post-Transient Contingency Results Figure C1: 16hs2sa_3400WoH_2250idnw_N Case Pre-Contingency 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 228.3 Mvar 1.09 puPONDROSA 0.0 Mvar 1 4 7 0 M W - 1 7 1 M v a r 1 3 5 9 M W - 2 0 7 M v a r 1 6 0 9 M W - 2 4 2 M v a r 1497 MW -180 Mvar 273 MW 68 Mvar 238 MW 63 Mvar 333 MW 64 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 55.0 Mvar 1.04 puHAT ROCK 1.04 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.05 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.04 puDRYCREEK 72.6 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.03 puIDAHO-NV 1.03 puKINPORT 0.0 Mvar 1.09 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 1 2 6 M W - 7 0 M v a r 1 5 6 5 M W - 1 7 5 M v a r 1653 MW -175 Mvar 1657 MW -178 Mvar 429 MW -36 Mvar 811 MW -12 Mvar 828 MW -54 Mvar 729 MW -95 Mvar 382 MW -90 Mvar 277 MW 26 Mvar 1111 MW -188 Mvar 1130 MW 148 Mvar 26 MW 174 Mvar 2 8 2 M W - 2 3 M v a r 26 MW 189 Mvar 253 MW 25 Mvar 859 MW 155 Mvar 80 MW 29 Mvar 68 MW 26 Mvar 646 MW 115 Mvar 1.05 puANTICLIN 552 MW 21 Mvar 551 MW 19 Mvar 143 MW 64 Mvar 123 MW 52 Mvar 321 MW 19 Mvar 253 MW 25 Mvar 47 MW 33 Mvar 343 MW 40 Mvar 711 MW -186 Mvar 66 MW -20 Mvar 85 MW 26 Mvar 107 MW 28 Mvar 625 MW 137 Mvar 0 MW 0 Mvar 458 MW -290 Mvar 774 MW -54 Mvar 237 MW -35 Mvar 162 MW -34 Mvar 161 MW -34 Mvar 153 MW 4 Mvar 157 MW -27 Mvar 2 9 5 M W 2 2 M v a r 52 MW 1 Mvar 194 MW -42 Mvar 52 MW 35 Mvar 74 MW 9 Mvar 58 MW 6 Mvar 61 MW 11 Mvar 4 4 4 M W - 1 1 M v a r HORSEFLT 1.01 puBOISEBCH 95.6 Mvar 0.0 Mvar 1.02 puONTARIO 157 MW -27 Mvar 15 MW 58 Mvar 283 MW 14 Mvar 2 8 6 M W - 1 4 M v a r 74 MW -13 Mvar 332 MW -37 Mvar 257 MW -15 Mvar 257 MW -15 Mvar 265 MW -20 Mvar 268 MW -33 Mvar 196 MW -35 Mvar 254 MW -42 Mvar 0 M W - 4 3 M v a r 0 M W - 4 3 M v a r 779 MW -133 Mvar 288 MW 158 Mvar 303 MW -6 Mvar 582 MW -67 Mvar 630 MW -15 Mvar 585 MW -47 Mvar 532 MW 17 Mvar 524 MW 8 Mvar 515 MW 9 Mvar 777 MW -46 Mvar 795 MW -48 Mvar 1395 MW -180 Mvar 1 5 9 M W 1 5 M v a r 876 MW -66 Mvar 1 3 6 4 M W - 2 4 M v a r 1 3 3 8 M W 5 M v a r 1 1 5 6 M W - 3 5 M v a r 1157 MW -131 Mvar ID-NW = -2250 MW Grassland = -1301 MW Summer Lake = -333 MW Lolo = -286 MW Walla Walla = -176 MW LaGrande = -162 MW Midpoint West = -1074 MW Borah West = 66 MW Idaho-Sierra = 282 MW N of John Day = 5603 MW COI = 4111 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 2704 MW W of Slatt = 4033 MW Alturas Project = 151 MW Path C = -1608 MW Montana Southeast = 599 MW TOT 2B1 = 45 MW TOT 2C = 168 MW 334 MW -73 Mvar 429 MW 55 Mvar 865 MW -1 Mvar 1038 MW -6 Mvar 1 M W -81 M v a r 8 3 6 M W - 1 9 3 M v a r 1 3 0 1 M W 9 3 M v a r 1253 MW -251 Mvar Page 267 of 776 Appendix C– 16hs2sa_3400WoH_2250idnw_N Case Post-Transient Contingency Results Figure C2: 16hs2sa_3400WoH_2250idnw_N Case N-1: Hemingway-Grassland 500 kV 1.06 puMALIN 0.0 Mvar 223.0 Mvar 223.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 223.9 Mvar 223.9 Mvar 0.0 Mvar 1.09 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.03 puHEMINWAY 211.2 Mvar 1.09 puPONDROSA 0.0 Mvar 1 9 4 4 M W - 4 3 0 M v a r 1 7 5 1 M W - 4 0 0 M v a r 3 0 7 1 M W - 8 0 0 M v a r 3059 MW -188 Mvar 302 MW 134 Mvar 263 MW 122 Mvar 1352 MW -286 Mvar 1.00 puHEMINWAY 1.07 pu JOHN DAY 432.6 Mvar 1.06 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.06 puSACJWA T 1.04 puMCNRY S1 1.06 puASHE 0.0 Mvar 1.07 pu GRASSLND 0.0 Mvar 1.07 puCOYOTE 1.06 puLOW MON 0.0 Mvar 0.98 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD 0.0 Mvar 1.06 puCDR SPRG 1.07 puBUCKLEY 0.97 puLAGRANDE 49.6 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.98 puN POWDER 1.02 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 0.99 puQUARTZ 1.00 puBROWNLEE 151.5 Mvar 113.6 Mvar 1.01 puDRYCREEK 68.8 Mvar 1.01 puHELLSCYN 1.00 puLOLO 1.01 puHATWAI 1.05 puHATWAI 1.06 puLOW GRAN 1.06 puCEN FERY 0.0 Mvar 1.06 puLIT GOOS 1.00 puOXBOW 1.04 puMIDPOINT 0.0 Mvar 1.06 puCEDARHIL 0.0 Mvar 1.05 puBORAH 0.99 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.06 puPOPULUS 0.0 Mvar 1.00 puBORAH 0.0 Mvar 0.99 puADELAIDE 1.01 puIDAHO-NV 1.00 puKINPORT 0.0 Mvar 1.07 puANTICLIN 0.0 Mvar 1.00 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.04 puBRIDGER 217.9 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 8 5 2 M W - 9 9 M v a r 2 1 5 4 M W - 4 1 M v a r 2464 MW -121 Mvar 2471 MW -125 Mvar 282 MW -47 Mvar 932 MW 28 Mvar 389 MW -81 Mvar 432 MW -111 Mvar 499 MW -44 Mvar 465 MW 65 Mvar 932 MW -158 Mvar 1024 MW 20 Mvar 11 MW 115 Mvar 2 7 3 M W - 4 7 M v a r 11 MW 130 Mvar 243 MW -26 Mvar 767 MW 76 Mvar 87 MW 10 Mvar 75 MW 6 Mvar 700 MW 91 Mvar 1.04 puANTICLIN 573 MW 58 Mvar 572 MW 56 Mvar 129 MW 90 Mvar 112 MW 75 Mvar 295 MW 21 Mvar 243 MW -26 Mvar 25 MW 25 Mvar 347 MW 58 Mvar 726 MW -189 Mvar 64 MW -39 Mvar 76 MW 40 Mvar 97 MW 44 Mvar 695 MW 188 Mvar 0 MW 0 Mvar 384 MW -252 Mvar 988 MW -61 Mvar 306 MW -12 Mvar 227 MW -47 Mvar 224 MW -57 Mvar 171 MW -7 Mvar 175 MW -26 Mvar 3 6 9 M W 7 7 M v a r 90 MW 24 Mvar 301 MW -39 Mvar 70 MW 47 Mvar 93 MW 22 Mvar 77 MW 18 Mvar 80 MW 25 Mvar 5 4 1 M W 2 4 M v a r HORSEFLT 0.98 puBOISEBCH 89.2 Mvar 0.0 Mvar 0.99 puONTARIO 175 MW -26 Mvar 24 MW 68 Mvar 331 MW 48 Mvar 3 4 3 M W - 9 M v a r 127 MW -51 Mvar 374 MW -65 Mvar 300 MW -13 Mvar 300 MW -13 Mvar 310 MW -18 Mvar 313 MW -39 Mvar 217 MW -47 Mvar 281 MW -57 Mvar 1 6 M W - 6 7 M v a r 1 6 M W - 6 6 M v a r 995 MW -74 Mvar 483 MW 96 Mvar 243 MW 12 Mvar 572 MW -64 Mvar 643 MW -21 Mvar 597 MW -49 Mvar 543 MW 8 Mvar 537 MW -6 Mvar 527 MW -6 Mvar 795 MW -61 Mvar 814 MW -63 Mvar 1432 MW -226 Mvar 2 0 0 M W 6 5 M v a r 1396 MW -102 Mvar 1 7 6 1 M W - 9 2 M v a r 1 7 1 3 M W 6 M v a r 1 6 3 7 M W - 2 7 5 M v a r 1640 MW -461 Mvar ID-NW = -2194 MW Grassland = 0 MW Summer Lake = -1352 MW Lolo = -343 MW Walla Walla = -276 MW LaGrande = -227 MW Midpoint West = -1072 MW Borah West = 51 MW Idaho-Sierra = 273 MW N of John Day = 6578 MW COI = 5361 MW PDCI = 3101 MW ID-MT = -373 MW W of McNary = 2602 MW W of Slatt = 5483 MW Alturas Project = 210 MW Path C = -1766 MW Montana Southeast = 685 MW TOT 2B1 = 157 MW TOT 2C = 248 MW 1379 MW 89 Mvar 317 MW 36 Mvar 976 MW -48 Mvar 1143 MW -36 Mvar 33 M W -129 M v a r 9 0 6 M W - 1 5 1 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 268 of 776 Appendix C– 16hs2sa_3400WoH_2250idnw_N Case Post-Transient Contingency Results Figure C3: 16hs2sa_3400WoH_2250idnw_N Case BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.10 puSUMMER L BURNS 0.0 Mvar 1.10 puHEMINWAY 242.7 Mvar 1.10 puPONDROSA 0.0 Mvar 1 4 9 6 M W - 1 5 1 M v a r 1 3 8 8 M W - 1 8 4 M v a r 1 4 6 9 M W - 2 6 1 M v a r 1332 MW -196 Mvar 243 MW 67 Mvar 212 MW 62 Mvar 83 MW -2 Mvar 0.97 puHEMINWAY 1.09 pu JOHN DAY 449.1 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.09 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 0.98 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 0.97 puLAGRANDE 49.6 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 0.98 puN POWDER 1.03 puTALBOT QUARTZTP 1.02 puWALA AVA 0.98 puHURICANE 0.99 puQUARTZ 1.00 puBROWNLEE 148.9 Mvar 111.6 Mvar 1.02 puDRYCREEK 70.1 Mvar 1.00 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 0.99 puOXBOW 1.07 puMIDPOINT 228.3 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.06 puBORAH 1.00 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.00 puADELAIDE 1.02 puIDAHO-NV 1.01 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.1 Mvar 0.0 Mvar 0.0 Mvar 1.10 puMARION 0.0 Mvar 1 1 1 4 M W - 6 6 M v a r 1 5 7 0 M W - 1 6 7 M v a r 1618 MW -183 Mvar 1622 MW -186 Mvar 446 MW -30 Mvar 836 MW 1 Mvar 695 MW -100 Mvar 583 MW -130 Mvar 363 MW -92 Mvar 148 MW -21 Mvar 946 MW -225 Mvar 0 MW 0 Mvar 895 MW 156 Mvar 1 4 2 M W - 3 7 M v a r 894 MW 113 Mvar 313 MW -55 Mvar 312 MW 190 Mvar 147 MW -58 Mvar 166 MW -58 Mvar 1417 MW 175 Mvar 1.04 puANTICLIN 598 MW 45 Mvar 597 MW 43 Mvar 566 MW -8 Mvar 484 MW -12 Mvar 545 MW -21 Mvar 313 MW -55 Mvar 3 MW -31 Mvar 387 MW 37 Mvar 761 MW -227 Mvar 120 MW 27 Mvar 306 MW -3 Mvar 345 MW -2 Mvar 527 MW 165 Mvar 0 MW 0 Mvar 292 MW -341 Mvar 741 MW -51 Mvar 345 MW -11 Mvar 263 MW -65 Mvar 259 MW -56 Mvar 167 MW -1 Mvar 170 MW -23 Mvar 4 1 1 M W 9 5 M v a r 141 MW 26 Mvar 343 MW -25 Mvar 96 MW 50 Mvar 119 MW 24 Mvar 103 MW 20 Mvar 105 MW 28 Mvar 5 7 9 M W 3 7 M v a r HORSEFLT 0.97 puBOISEBCH 87.2 Mvar 0.0 Mvar 0.98 puONTARIO 170 MW -23 Mvar 28 MW 73 Mvar 344 MW 69 Mvar 3 5 9 M W 1 M v a r 161 MW -41 Mvar 401 MW -78 Mvar 308 MW -10 Mvar 308 MW -10 Mvar 317 MW -15 Mvar 321 MW -38 Mvar 223 MW -53 Mvar 288 MW -64 Mvar 5 8 M W - 4 8 M v a r 5 9 M W - 4 7 M v a r 744 MW -138 Mvar 272 MW 151 Mvar 274 MW -10 Mvar 531 MW -79 Mvar 593 MW -24 Mvar 551 MW -56 Mvar 499 MW 9 Mvar 488 MW -2 Mvar 479 MW -1 Mvar 726 MW -62 Mvar 742 MW -65 Mvar 1290 MW -220 Mvar 2 4 3 M W 9 4 M v a r 912 MW -43 Mvar 1 3 9 9 M W 2 M v a r 1 3 6 5 M W 2 8 M v a r 1 4 1 0 M W 8 4 M v a r 1412 MW -45 Mvar ID-NW = -1879 MW Grassland = -1015 MW Summer Lake = 83 MW Lolo = -359 MW Walla Walla = -315 MW LaGrande = -263 MW Midpoint West = 200 MW Borah West = 1204 MW Idaho-Sierra = 142 MW N of John Day = 5435 MW COI = 4382 MW PDCI = 3101 MW ID-MT = -375 MW W of McNary = 2487 MW W of Slatt = 4065 MW Alturas Project = 197 MW Path C = -1396 MW Montana Southeast = 642 MW TOT 2B1 = -16 MW TOT 2C = 105 MW 83 MW 165 Mvar 0 MW 0 Mvar 832 MW -3 Mvar 1013 MW -9 Mvar 117 M W -91 M v a r 8 2 4 M W - 1 9 7 M v a r 1 0 1 5 M W - 1 6 0 M v a r 986 MW -96 Mvar Page 269 of 776 Appendix C– 16hs2sa_3400WoH_2250idnw_N Case Post-Transient Contingency Results Figure C4: 16hs2sa_3400WoH_2250idnw_N Case N-2: Double Palo Verde 1.08 puMALIN 0.0 Mvar 228.4 Mvar 228.4 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 229.1 Mvar 229.1 Mvar 0.0 Mvar 1.10 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 221.4 Mvar 1.11 puPONDROSA 0.0 Mvar 2 0 2 9 M W - 4 1 9 M v a r 1 8 5 0 M W - 3 8 4 M v a r 2 3 1 8 M W - 6 3 5 M v a r 2226 MW -271 Mvar 249 MW 95 Mvar 217 MW 87 Mvar 429 MW 33 Mvar 1.02 puHEMINWAY 1.08 pu JOHN DAY 442.3 Mvar 1.06 puMCNARY 1.08 puSLATT 346.9 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.05 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.9 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD437.7 Mvar 1.07 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.02 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 158.9 Mvar 119.2 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-86.4 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 177.9 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.97 puIDAHO-NV 1.02 puKINPORT 183.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.3 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 7 4 4 M W - 1 5 1 M v a r 2 1 7 1 M W - 7 6 M v a r 2227 MW -199 Mvar 2232 MW -203 Mvar 407 MW -28 Mvar 1008 MW 19 Mvar 1754 MW -183 Mvar 1220 MW -150 Mvar 1282 MW -167 Mvar 330 MW -44 Mvar 1338 MW -213 Mvar 1436 MW 67 Mvar 250 MW 168 Mvar 5 4 8 M W 1 0 M v a r 250 MW 97 Mvar 485 MW -36 Mvar 922 MW 94 Mvar 196 MW 2 Mvar 188 MW -2 Mvar 844 MW 69 Mvar 1.05 puANTICLIN 378 MW 9 Mvar 378 MW 8 Mvar 47 MW -114 Mvar 39 MW -98 Mvar 273 MW -30 Mvar 485 MW -36 Mvar 174 MW 13 Mvar 245 MW 74 Mvar 589 MW -87 Mvar 183 MW -68 Mvar 39 MW -56 Mvar 27 MW -60 Mvar 598 MW 173 Mvar 615 MW 34 Mvar 746 MW -189 Mvar 1477 MW -247 Mvar 213 MW -35 Mvar 139 MW -27 Mvar 168 MW -27 Mvar 164 MW -29 Mvar 62 MW -2 Mvar 2 7 0 M W 1 5 M v a r 41 MW 24 Mvar 168 MW -54 Mvar 31 MW -53 Mvar 7 MW -28 Mvar 23 MW -25 Mvar 22 MW -28 Mvar 4 7 2 M W - 2 M v a r HORSEFLT 1.00 puBOISEBCH 93.4 Mvar 0.0 Mvar 1.01 puONTARIO 62 MW -2 Mvar 35 MW 26 Mvar 368 MW 48 Mvar 3 3 0 M W - 5 4 M v a r 65 MW -8 Mvar 404 MW -65 Mvar 320 MW -13 Mvar 320 MW -13 Mvar 330 MW -18 Mvar 333 MW -41 Mvar 210 MW -57 Mvar 271 MW -70 Mvar 8 M W - 4 8 M v a r 8 M W - 4 8 M v a r 1492 MW -68 Mvar 428 MW 129 Mvar 756 MW -37 Mvar 1335 MW -33 Mvar 974 MW -36 Mvar 906 MW -41 Mvar 722 MW -3 Mvar 485 MW -13 Mvar 477 MW -13 Mvar 670 MW -32 Mvar 686 MW -34 Mvar 434 MW -54 Mvar 4 9 2 M W 1 2 0 M v a r 1615 MW -168 Mvar 1 9 2 3 M W - 3 7 M v a r 1 8 0 9 M W 4 3 M v a r 1 7 8 0 M W - 9 8 M v a r 1784 MW -299 Mvar ID-NW = -2446 MW Grassland = -1418 MW Summer Lake = -429 MW Lolo = -330 MW Walla Walla = -151 MW LaGrande = -139 MW Midpoint West = -1862 MW Borah West = -503 MW Idaho-Sierra = 548 MW N of John Day = 9446 MW COI = 5613 MW PDCI = 3101 MW ID-MT = -351 MW W of McNary = 5545 MW W of Slatt = 6294 MW Alturas Project = 181 MW Path C = -1911 MW Montana Southeast = 630 MW TOT 2B1 = 228 MW TOT 2C = 324 MW 431 MW -77 Mvar 102 MW 51 Mvar 1480 MW -89 Mvar 1424 MW -32 Mvar 17 M W -91 M v a r 1 1 1 3 M W - 8 2 M v a r 1 4 1 8 M W 2 1 8 M v a r 1360 MW -344 Mvar Page 270 of 776 Appendix C– 16hs2sa_3400WoH_2250idnw_N Case Post-Transient Contingency Results Figure C5: 16hs2sa_3400WoH_2250idnw_N Case N-2: DC Bipole 1.05 puMALIN 0.0 Mvar 216.9 Mvar 216.9 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 219.6 Mvar 1.09 puPONDROSA 0.0 Mvar 2 1 9 8 M W - 2 3 8 M v a r 2 0 0 8 M W - 2 2 7 M v a r 2 5 0 2 M W - 5 5 1 M v a r 2422 MW -144 Mvar 274 MW -16 Mvar 241 MW -10 Mvar 470 MW -33 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 449.9 Mvar 1.07 puMCNARY 1.08 puSLATT 352.5 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 174.9 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD456.4 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.4 Mvar 1.05 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.03 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 159.6 Mvar 119.7 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-85.9 Mvar 1.06 puBORAH 1.01 puMIDPOINT 0.0 Mvar 176.8 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.97 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.4 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 7 3 1 M W - 9 M v a r 2 1 5 2 M W 2 7 M v a r 2490 MW 56 Mvar 2497 MW 53 Mvar 402 MW -55 Mvar 980 MW 14 Mvar 1703 MW -146 Mvar 1169 MW -97 Mvar 1225 MW -180 Mvar 279 MW -109 Mvar 1231 MW -160 Mvar 1471 MW 41 Mvar 264 MW 155 Mvar 5 5 9 M W 1 3 M v a r 264 MW 83 Mvar 495 MW -52 Mvar 946 MW 78 Mvar 196 MW -4 Mvar 189 MW -8 Mvar 841 MW 64 Mvar 1.05 puANTICLIN 373 MW 10 Mvar 373 MW 9 Mvar 47 MW -118 Mvar 39 MW -102 Mvar 277 MW -36 Mvar 495 MW -52 Mvar 182 MW 4 Mvar 245 MW 72 Mvar 588 MW -87 Mvar 187 MW -74 Mvar 39 MW -61 Mvar 28 MW -66 Mvar 582 MW 177 Mvar 595 MW 41 Mvar 730 MW -231 Mvar 1269 MW -187 Mvar 219 MW -33 Mvar 145 MW -26 Mvar 174 MW -27 Mvar 143 MW -19 Mvar 40 MW 1 Mvar 2 7 6 M W 1 8 M v a r 91 MW 11 Mvar 160 MW -46 Mvar 6 MW -49 Mvar 17 MW 23 Mvar 1 MW 19 Mvar 3 MW 23 Mvar 4 6 3 M W - 3 M v a r HORSEFLT 1.00 puBOISEBCH 93.6 Mvar 0.0 Mvar 1.01 puONTARIO 40 MW 1 Mvar 34 MW 25 Mvar 344 MW 48 Mvar 3 0 5 M W - 4 1 M v a r 71 MW -9 Mvar 397 MW -58 Mvar 314 MW -10 Mvar 314 MW -10 Mvar 324 MW -16 Mvar 327 MW -38 Mvar 199 MW -48 Mvar 257 MW -58 Mvar 7 M W - 4 8 M v a r 7 M W - 4 8 M v a r 1280 MW -107 Mvar 19 MW 290 Mvar 852 MW -119 Mvar 1307 MW -88 Mvar 892 MW -57 Mvar 829 MW -68 Mvar 649 MW -13 Mvar 405 MW -14 Mvar 398 MW -13 Mvar 555 MW -37 Mvar 568 MW -39 Mvar 201 MW -22 Mvar 5 0 7 M W 1 1 0 M v a r 1202 MW -119 Mvar 2 1 0 4 M W 1 9 9 M v a r 1 9 5 9 M W 2 3 1 M v a r 1 9 3 3 M W 8 3 M v a r 1937 MW -151 Mvar ID-NW = -2491 MW Grassland = -1448 MW Summer Lake = -470 MW Lolo = -305 MW Walla Walla = -143 MW LaGrande = -145 MW Midpoint West = -1887 MW Borah West = -515 MW Idaho-Sierra = 559 MW N of John Day = 7447 MW COI = 6132 MW PDCI = 0 MW ID-MT = -336 MW W of McNary = 5123 MW W of Slatt = 5619 MW Alturas Project = 186 MW Path C = -1894 MW Montana Southeast = 588 MW TOT 2B1 = 191 MW TOT 2C = 346 MW 473 MW -127 Mvar 120 MW 37 Mvar 1176 MW 15 Mvar 1127 MW 12 Mvar 13 M W -92 M v a r 1 0 1 1 M W - 1 0 9 M v a r 1 4 4 8 M W 2 6 4 M v a r 1387 MW -342 Mvar Page 271 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 650.0 780.0 369.8 651.8 100.3% 83.6% 369.8 665.3 102.3% 85.3% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 979.0 1287.7 667.7 1141.7 116.6% 88.7% 641.6 1143.4 116.8% 88.8% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV + RAS No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1054.1 104.5% 82.0% No Violation BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1462.5 2528.2 103.5% 78.1% 1444.9 2490.2 102.0% 77.0% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3235.5 1460.9 2528.2 114.9% 78.1% 1444.9 2490.2 113.2% 77.0% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 1807.2 2468.3 102.8% 65.0% No Violation BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV PTRSNFUR (62386) % Δ Volts 0.962 0.904 6.03% No Violation BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV PTRSNFLT (62030) % Δ Volts 0.946 0.890 5.92% No Violation BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV GRIJOH22 (90067) -> GRIJOH21 (90066) CKT 2 at GRIJOH21 Branch Amp 3000.0 4050.0 1917.9 3002.4 100.1% 74.1% No Violation BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1462.5 2582.1 105.7% 79.8% 1444.9 2537.0 103.9% 78.4% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3235.5 1460.9 2582.1 117.4% 79.8% 1444.9 2537.0 115.3% 78.4% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 270.5 328.8 102.7% 88.9% 271.8 342.1 106.9% 92.4% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 758.3 1051.0 110.6% 81.7% 674.9 1078.6 113.5% 83.9% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 270.5 340.0 106.2% 91.9% 271.8 352.2 110.1% 95.2% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 758.3 1074.3 113.1% 83.5% 674.9 1101.6 116.0% 85.7% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1153.3 114.3% 89.7% 923.8 1041.2 103.2% 81.0% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations Page 272 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4708 Hatwai 500 kV Bus + RAS No Violations BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV + RAS DRYGULCH (48113) -> DRYGULCH (45097) CKT 1 at DRYGULCH Branch MVA 20.0 24.0 14.9 21.9 109.5% 91.3% 15.0 22.4 111.9% 93.3% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 921.7 100.2% 88.0% 729.2 922.0 100.2% 88.1% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1386.0 112.0% 99.3% No Violation BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 944.5 102.7% 90.2% No Violation BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 827.4 103.4% 69.0% No Violation BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PTRSNFUR (62386) % Δ Volts 0.962 0.878 8.73% No Violation BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PTRSNFLT (62030) % Δ Volts 0.946 0.866 8.46% No Violation BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV AMPS (65025) % Δ Volts 0.955 0.886 7.23% No Violation BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1393.3 112.6% 99.8% No Violation BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 951.5 103.4% 90.9% No Violation BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 832.0 104.0% 69.3% No Violation BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PTRSNFUR (62386) % Δ Volts 0.962 0.878 8.73% No Violation BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PTRSNFLT (62030) % Δ Volts 0.946 0.866 8.46% No Violation BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV AMPS (65025) % Δ Volts 0.955 0.888 7.02% No Violation BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations Page 273 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1275.5 103.1% 91.4% No Violation BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1051.4 104.2% 81.8% No Violation BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV PTRSNFUR (62386) % Δ Volts 0.962 0.911 5.30% No Violation BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV GRIJOH22 (90067) -> GRIJOH21 (90066) CKT 2 at GRIJOH22 Branch Amp 3000.0 4050.0 1917.9 3003.3 100.1% 74.2% No Violation BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 Contingency Unavailable 1081.6 1386.1 112.0% 99.3% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 Contingency Unavailable 729.2 947.2 103.0% 90.5% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 711.1 811.8 101.5% 67.7% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1344.6 108.7% 96.3% 1081.6 1244.8 100.6% 89.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 809.2 101.1% 67.4% No Violation BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.962 0.894 7.07% No Violation BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.946 0.882 6.77% No Violation BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.955 0.900 5.76% No Violation BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1343.7 108.6% 96.3% 1081.6 1451.6 117.3% 104.0% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 No Violation 729.2 993.2 108.0% 94.9% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 804.1 100.5% 67.0% 711.1 807.7 101.0% 67.3% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HEMINWAY (60156) % Δ Volts No Violation 1.034 0.968 6.38% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LAGRANDE (40619) % Δ Volts No Violation 0.977 0.921 5.73% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr BOWMONT (60064) % Δ Volts No Violation 1.026 0.968 5.65% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr BOWMONT (60065) % Δ Volts No Violation 1.040 0.983 5.48% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr CHESTNUT (60211) % Δ Volts No Violation 1.025 0.973 5.07% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HAPPYVLY (60257) % Δ Volts No Violation 1.027 0.975 5.06% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LAGRANDE (40621) % Δ Volts No Violation 1.027 0.975 5.06% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.962 0.891 7.38% No Violation BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.946 0.878 7.19% No Violation BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.955 0.891 6.70% No Violation BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr MIDPOINT (60240) % Δ Volts 1.092 1.033 5.40% No Violation BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1282.2 103.7% 91.9% No Violation Page 274 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 No Violations BF McNary 230 kV SECT 3 FRANKLIN (40443) % Δ Volts 1.005 0.947 5.77% 1.005 0.946 5.87% Bus: Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1140.8 113.1% 88.8% 923.8 1030.2 102.1% 80.2% Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV DIXON MV (40348) % Δ Volts 1.024 0.969 5.37% No Violation Bus: Hot Springs 500 kV HOT SPR (40551) % Δ Volts 1.034 0.981 5.13% No Violation Bus: Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 94.0 139.0 74.7 95.1 101.1% 68.4% No Violation Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1393.7 112.7% 99.8% No Violation Bus: Summer Lake 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 950.5 103.3% 90.8% No Violation Bus: Summer Lake 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 831.0 103.9% 69.3% No Violation Bus: Summer Lake 500 kV PTRSNFUR (62386) % Δ Volts 0.962 0.874 9.15% No Violation Bus: Summer Lake 500 kV PTRSNFLT (62030) % Δ Volts 0.946 0.863 8.77% No Violation Bus: Summer Lake 500 kV AMPS (65025) % Δ Volts 0.955 0.883 7.54% No Violation N-1: Allston-Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 94.0 139.0 74.7 95.1 101.2% 68.4% No Violation N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1196.0 118.5% 93.1% 923.8 1083.3 107.4% 84.3% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 785.7 926.3 275.5 786.3 100.1% 84.9% 326.0 821.7 104.6% 88.7% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 785.7 926.3 275.5 786.3 100.1% 84.9% 326.0 821.7 104.6% 88.7% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3235.5 1460.9 2243.4 102.0% 69.3% No Violation N-1: CaptJack-Kfalls 500 kV No Violations Page 275 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 No Violation 923.8 1029.7 102.0% 80.1% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 979.0 1287.7 667.7 1096.1 112.0% 85.1% 641.6 1098.2 112.2% 85.3% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS No Violations N-1: Dworshak-Taft 500 kV + RAS No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 1807.2 2475.4 103.1% 65.1% No Violation N-1: Grizzly-Ponderosa A-Summer L 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1247.6 100.9% 89.4% No Violation N-1: Grizzly-Ponderosa B-Capt Jack 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 1807.2 2469.1 102.9% 65.0% No Violation N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV + RAS DRYGULCH (48113) -> DRYGULCH (45097) CKT 1 at DRYGULCH Branch MVA 20.0 24.0 14.9 20.2 101.1% 84.2% 15.0 22.4 111.9% 93.2% N-1: Hatwai-Low Gran 500 kV + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 No Violation 729.2 921.8 100.2% 88.1% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 951.4 103.4% 90.9% No Violation N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 Contingency Unavailable 1081.6 1312.2 106.1% 94.0% N-1: Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 711.1 812.5 101.6% 67.7% N-1: Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts Contingency Unavailable 0.982 0.913 7.03% N-1: Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts Contingency Unavailable 0.965 0.900 6.74% N-1: Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts Contingency Unavailable 0.969 0.912 5.88% Page 276 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 Contingency Unavailable 1081.6 1305.0 105.5% 93.5% N-1: Hemingway-Grassland 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 Contingency Unavailable 711.1 814.1 101.8% 67.8% N-1: Hemingway-Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1345.2 108.7% 96.4% No Violation N-1: Hemingway-Summer Lake 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 807.3 100.9% 67.3% No Violation N-1: Hemingway-Summer Lake 500 kV PTRSNFUR (62386) % Δ Volts 0.962 0.897 6.76% No Violation N-1: Hemingway-Summer Lake 500 kV PTRSNFLT (62030) % Δ Volts 0.946 0.884 6.55% No Violation N-1: Hemingway-Summer Lake 500 kV AMPS (65025) % Δ Volts 0.955 0.901 5.65% No Violation N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV HOT SPR (40553) % Δ Volts 1.054 0.980 7.02% 1.064 0.989 7.05% N-1: Hot Springs-Taft 500 kV DIXON MV (40348) % Δ Volts 1.024 0.968 5.47% No Violation N-1: Hot Springs-Taft 500 kV HOT SPR (40551) % Δ Volts 1.034 0.980 5.22% No Violation N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1088.8 107.9% 84.7% No Violation N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 2442.0 3235.5 1462.5 2530.2 103.6% 78.2% 1444.9 2492.9 102.1% 77.0% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 2199.9 3235.5 1460.9 2530.2 115.0% 78.2% 1444.9 2492.9 113.3% 77.0% N-1: Malin-Round Mtn #2 500 kV No Violations N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1284.1 103.8% 92.0% No Violation N-1: McNary-Sac Tap-Low Mon 500 kV No Violations Page 277 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-1: Midpoint-Hemingway 500 kV No Violations N-1: Midpoint-Hemingway 500 kV + PTSN Shunt No Violations N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1284.6 103.8% 92.0% No Violation N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 320.0 370.0 270.5 329.8 103.1% 89.1% 271.8 344.1 107.5% 93.0% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 758.3 1054.0 110.9% 82.0% 674.9 1084.8 114.2% 84.4% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Roundup-Lagrande 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1256.9 101.6% 90.0% No Violation N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations Page 278 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 859.7 107.5% 71.6% 711.1 815.4 101.9% 68.0% N-2: Bridger-Populus #1 & #2 345 kV + RAS HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1355.8 109.6% 97.1% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 931.0 101.2% 88.9% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS PTRSNFLT (62030) % Δ Volts 0.946 0.839 11.31% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS AMPS (65025) % Δ Volts 0.955 0.857 10.26% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS BIGGRASS (65155) % Δ Volts 0.982 0.909 7.43% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS DILLON S (62084) % Δ Volts 0.965 0.906 6.11% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS SPAR CYN (66765) % Δ Volts 0.983 0.924 6.00% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS LOST RIV (65910) % Δ Volts 0.988 0.931 5.77% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS ANTLOPE (65075) % Δ Volts 0.991 0.935 5.65% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS SHERDNMT (62158) % Δ Volts 0.964 0.913 5.29% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS SCOV IPC (65015) % Δ Volts 0.969 0.919 5.16% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS SCOVILLE (65010) % Δ Volts 0.969 0.919 5.16% No Violation N-2: Bridger-Populus #1 & #2 345 kV + RAS ANTLOPE (65080) % Δ Volts 0.973 0.923 5.14% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 876.2 109.5% 73.0% 711.1 830.8 103.8% 69.2% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1362.4 110.1% 97.6% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 934.5 101.6% 89.3% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BIGGRASS (65155) % Δ Volts 0.982 0.866 11.81% 0.983 0.920 6.41% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS AMPS (65025) % Δ Volts 0.955 0.821 14.03% 0.969 0.913 5.78% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS PTRSNFUR (62386) % Δ Volts 0.962 0.826 14.14% 0.982 0.928 5.50% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS PTRSNFLT (62030) % Δ Volts 0.946 0.805 14.90% 0.965 0.914 5.28% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SPAR CYN (66765) % Δ Volts 0.983 0.894 9.05% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS DILLON S (62084) % Δ Volts 0.965 0.880 8.81% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS LOST RIV (65910) % Δ Volts 0.988 0.902 8.70% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS ANTLOPE (65075) % Δ Volts 0.991 0.907 8.48% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SCOV IPC (65015) % Δ Volts 0.969 0.894 7.74% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SCOVILLE (65010) % Δ Volts 0.969 0.894 7.74% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS ANTLOPE (65080) % Δ Volts 0.973 0.898 7.71% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SHERDNMT (62158) % Δ Volts 0.964 0.890 7.68% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS ENNIS MT (62065) % Δ Volts 0.963 0.896 6.96% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS JEFERSON (65851) % Δ Volts 1.011 0.946 6.43% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BRADLEYC (62064) % Δ Volts 0.963 0.902 6.33% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS JEFFERSN (65850) % Δ Volts 1.007 0.944 6.26% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BRADLEYC (62105) % Δ Volts 0.940 0.883 6.06% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MADISON (62022) % Δ Volts 0.940 0.883 6.06% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS HAR-PONY (62251) % Δ Volts 0.935 0.881 5.78% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS THREFORK (62248) % Δ Volts 0.932 0.881 5.47% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MAYFLWRT (62155) % Δ Volts 0.934 0.883 5.46% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS JACKRABB (62349) % Δ Volts 0.994 0.940 5.43% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MONTTALC (62253) % Δ Volts 0.931 0.881 5.37% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS WILLWCKM (62252) % Δ Volts 0.931 0.881 5.37% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS TRIDENT (62020) % Δ Volts 0.951 0.900 5.36% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS RIGBY (66295) % Δ Volts 0.999 0.946 5.31% No Violation Page 279 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BZ EGALL (62348) % Δ Volts 0.981 0.929 5.30% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS RENOVA (62145) % Δ Volts 0.933 0.884 5.25% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS TRIDENT (62073) % Δ Volts 0.933 0.884 5.25% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS EUSTIS (62244) % Δ Volts 0.929 0.881 5.17% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS JACKRABT (62256) % Δ Volts 0.969 0.919 5.16% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS THREERIV (62021) % Δ Volts 0.936 0.888 5.13% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BOULEVRD (65200) % Δ Volts 0.970 0.921 5.05% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BOZMN WS (62324) % Δ Volts 0.970 0.921 5.05% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS IDFLS UP (65835) % Δ Volts 0.970 0.921 5.05% No Violation N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS ANDERSON (65035) % Δ Volts 0.975 0.926 5.03% No Violation N-2: Broadview-Garrison #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV MCNRY S1 (41351) -> ROUNDUP (40905) CKT 1 at ROUNDUP Branch Amp 1070.1 1329.9 750.8 1143.6 106.9% 86.0% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 807.9 101.0% 67.3% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV PTRSNFUR (62386) % Δ Volts 0.962 0.897 6.76% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV PTRSNFLT (62030) % Δ Volts 0.946 0.884 6.55% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV AMPS (65025) % Δ Volts 0.955 0.903 5.45% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV ATHENA (45015) % Δ Volts 0.977 0.926 5.22% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV PILOT RK (45413) % Δ Volts 0.977 0.926 5.22% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV MISSIONT (47191) % Δ Volts 0.986 0.936 5.07% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV PENDLTON (45235) % Δ Volts 0.987 0.937 5.07% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV BUCKAROO (45027) % Δ Volts 0.988 0.938 5.06% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV LAGRANDE (40619) % Δ Volts 0.971 0.922 5.05% No Violation N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV PENDLT T (41248) % Δ Volts 0.991 0.941 5.05% No Violation N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 930.1 101.1% 88.9% No Violation N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at VINCENT Branch Amp 2134.0 3499.9 1465.0 2166.1 101.5% 61.9% 1531.1 2220.4 104.0% 63.4% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 2134.0 3499.9 1445.2 2134.9 100.0% 61.0% 1509.8 2187.8 102.5% 62.5% N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 2134.0 3499.9 No Violation 1490.1 2160.3 101.2% 61.7% N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 2400.0 3200.0 1800.6 2873.7 119.7% 89.8% 1601.7 2613.5 108.9% 81.7% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 2400.0 3800.0 1807.2 2887.7 120.3% 76.0% 1610.2 2630.2 109.6% 69.2% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 2199.9 3280.5 1633.4 2207.5 100.3% 67.3% 1658.0 2213.4 100.6% 67.5% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 2400.0 3200.0 1800.6 2676.6 111.5% 83.6% 1601.7 2405.9 100.2% 75.2% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1807.2 2694.3 112.3% 70.9% 1610.2 2426.1 101.1% 63.8% N-2: Double Palo Verde PTRSNFUR (62386) % Δ Volts 0.962 0.898 6.65% No Violation N-2: Double Palo Verde PTRSNFLT (62030) % Δ Volts 0.946 0.885 6.45% No Violation Page 280 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: Double Palo Verde AMPS (65025) % Δ Volts 0.955 0.904 5.34% No Violation N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 2400.0 3800.0 1807.2 3703.4 154.3% 97.5% 1610.2 3319.7 138.3% 87.4% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 2700.0 4000.0 1206.1 3146.6 116.5% 78.7% 1231.0 3077.8 114.0% 76.9% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS GRIZZ R3 (40488) -> PONDROSA (40837) CKT 1 at GRIZZ R3 Branch Amp 3780.0 3780.0 1917.1 3900.4 103.2% 103.2% No Violation N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS GRIZZLY (40489) -> GRIZZ R3 (40488) CKT 1 at GRIZZ R3 Branch Amp 3780.0 3780.0 1922.4 3900.4 103.2% 103.2% No Violation N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1062.5 105.3% 82.7% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1567.0 3584.9 149.4% 94.3% 1471.2 3127.4 130.3% 82.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1549.3 3566.1 148.6% 93.8% 1454.0 3110.0 129.6% 81.8% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON11 (90137) -> CAPTJACK (45035) CKT 1 at CAPPON11 Branch Amp 3220.0 3220.0 1549.3 3566.1 110.7% 110.7% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS GRIZZLY (40489) -> PONDROSB (40834) CKT 1 at GRIZZLY Branch Amp 3500.0 3500.0 1681.4 3773.4 107.8% 107.8% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS PONDROSB (40834) -> CAPPON16 (90142) CKT 1 at PONDROSB Branch Amp 3500.0 3500.0 1584.0 3601.0 102.9% 102.9% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON15 (90141) -> CAPPON14 (90140) CKT 1 at CAPPON15 Branch Amp 3500.0 3500.0 1567.0 3584.9 102.4% 102.4% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON13 (90139) -> CAPPON12 (90138) CKT 1 at CAPPON13 Branch Amp 3500.0 3800.0 1558.8 3580.8 102.3% 94.2% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1237.0 1396.0 1124.9 1300.1 105.1% 93.1% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1062.8 105.3% 82.7% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.962 0.906 5.82% No Violation N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.946 0.893 5.60% No Violation N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 2400.0 3800.0 1567.0 3186.4 132.8% 83.9% 1471.2 3067.2 127.8% 80.7% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 2400.0 3800.0 1549.3 3172.6 132.2% 83.5% 1454.0 3054.6 127.3% 80.4% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1053.2 104.4% 81.9% No Violation N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1068.7 105.9% 83.2% No Violation N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 2900.0 4350.0 2034.9 3483.3 120.1% 80.1% No Violation N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 3000.0 4050.0 1922.9 3886.3 129.5% 96.0% 1762.2 3379.6 112.7% 83.4% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS JOHN DAY (40585) -> GRIJOH12 (90065) CKT 1 at JOHN DAY Branch Amp 3500.0 3500.0 1931.9 3892.8 111.2% 111.2% No Violation N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH11 (90064) -> GRIZZLY (40489) CKT 1 at GRIJOH11 Branch Amp 3500.0 3500.0 1922.9 3886.3 111.0% 111.0% No Violation N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 1009.1 1285.2 1019.6 1055.7 104.6% 82.1% No Violation N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV + RAS Open 69 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 920.0 1046.8 754.8 953.7 103.7% 91.1% 729.2 954.4 103.7% 91.2% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 2667.4 4099.2 1619.4 3112.8 116.7% 75.9% 1576.0 3033.1 113.7% 74.0% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 2667.4 4099.2 1595.8 3027.9 113.5% 73.9% 1551.0 2948.6 110.5% 71.9% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 2667.4 4099.2 1595.8 3027.9 113.5% 73.9% 1551.0 2948.6 110.5% 71.9% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations Page 281 of 776 Appendix C- 16hs2a_3400WoH_2250idnw_N Base Case Post-Transient Contingency Results ID-NW 1200 Case Results (WoH 3400) ID-NW 2250 Case Results (WoH 3400) Contingency Studied Element Overloaded Violation Type Limit A Limit B Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts Pre Cont. Value Post Cont. Value % Limit A % Limit B or % Δ Volts N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV No Violations N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at HORIZN Branch MVA 320.0 370.0 270.5 331.9 103.7% 89.7% 271.8 345.7 108.0% 93.4% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 950.0 1286.0 758.3 1059.4 111.5% 82.4% 674.9 1089.0 114.6% 84.7% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV TROUTPP2 (45303) -> GRESHAM (43215) CKT 1 at GRESHAM Branch Amp 948.9 1164.7 700.5 1036.5 109.2% 89.0% No Violation N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV TROUTPP1 (45301) -> LINNEMAN (43291) CKT 1 at LINNEMAN Branch Amp 1009.1 1199.9 736.4 1064.6 105.5% 88.7% No Violation N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 800.0 1199.9 725.8 813.4 101.7% 67.8% 711.1 822.1 102.8% 68.5% N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS PTRSNFUR (62386) % Δ Volts No Violation 0.982 0.920 6.31% N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS PTRSNFLT (62030) % Δ Volts No Violation 0.965 0.906 6.11% N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS AMPS (65025) % Δ Volts No Violation 0.969 0.917 5.37% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV + RAS No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV + RAS No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 282 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.85 -1891 0.82 -1001 0.79 -2116 0.81 -2255 0.92 -1401 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.85 -1889 0.82 -989 0.79 -2106 0.81 -2221 0.92 -1389 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.84 -1954 0.82 -1008 0.79 -2152 0.80 -2272 0.92 -1438 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.85 -1918 0.83 -976 0.79 -2117 0.81 -2187 0.93 -1402 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.85 -1917 0.82 -1011 0.79 -2097 0.80 -2292 0.92 -1405 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.84 -1954 0.82 -1006 0.79 -2154 0.81 -2261 0.92 -1438 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV + RAS 0.87 -1501 0.82 -1089 0.70 -2007 0.80 -2399 0.93 -1082 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.86 -1854 0.83 -926 0.81 -2033 0.81 -2055 0.93 -1331 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.85 -1927 0.83 -991 0.79 -2144 0.81 -2207 0.93 -1414 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.85 -1884 0.83 -951 0.80 -2089 0.81 -2093 0.93 -1374 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.84 -1925 0.82 -1009 0.78 -2068 0.80 -2287 0.92 -1420 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.85 -1929 0.82 -1011 0.79 -2115 0.80 -2290 0.92 -1422 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.86 -1668 0.82 -1079 0.70 -2002 0.80 -2365 0.92 -1148 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.9 -1416 0.82 -1012 0.88 -1568 0.81 -2256 0.94 -943 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500 KV 0.8 -1350 0.82 -1006 0.88 -1235 0.81 -2240 0.92 -667 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.85 -1900 0.83 -960 0.80 -2088 0.81 -2139 0.93 -1384 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.85 -1870 0.83 -956 0.80 -2069 0.81 -2140 0.93 -1367 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500KV + RAS 0.89 -1628 0.82 -1046 0.85 -1890 0.80 -2337 0.93 -1146 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.84 -1927 0.82 -998 0.79 -2129 0.80 -2242 0.92 -1422 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.85 -1923 0.83 -983 0.79 -2140 0.81 -2180 0.93 -1411 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.85 -1916 0.82 -995 0.80 -2084 0.81 -2258 0.93 -1395 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.84 -1946 0.82 -1006 0.79 -2142 0.80 -2266 0.92 -1434 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.84 -1968 0.82 -1016 0.78 -2180 0.80 -2292 0.92 -1451 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.85 -1932 0.82 -952 0.79 -2148 0.81 -2287 0.93 -1424 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.85 -1863 0.82 -1014 0.79 -2072 0.80 -2359 0.92 -1389 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.85 -1841 0.82 -1002 0.80 -1924 0.81 -2275 0.93 -1358 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.85 -1908 0.82 -1009 0.78 -2019 0.80 -2287 0.92 -1408 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.85 -1788 0.82 -1015 0.80 -2047 0.80 -2295 0.93 -1336 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.84 -1883 0.82 -1016 0.79 -2127 0.80 -2299 0.92 -1403 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV + RAS 0.85 -1916 0.82 -1005 0.79 -2116 0.81 -2267 0.92 -1400 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV + RAS 0.85 -1918 0.82 -1007 0.79 -2122 0.80 -2278 0.92 -1404 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.84 -1954 0.82 -1011 0.79 -2149 0.80 -2282 0.92 -1438 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.84 -1961 0.82 -1016 0.78 -2162 0.80 -2299 0.92 -1445 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.84 -1932 0.82 -1016 0.79 -2138 0.80 -2301 0.92 -1430 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.84 -1937 0.82 -1016 0.79 -2140 0.80 -2301 0.92 -1433 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV + RAS 0.84 -1806 0.82 -1020 0.79 -2101 0.80 -2322 0.92 -1406 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.84 -1960 0.82 -1010 0.78 -2162 0.80 -2270 0.92 -1443 BF 4432 OSTRANDER-TROUTDALE & SPLIT OSTRANDER 500 KV 0.84 -1961 0.82 -1012 0.78 -2162 0.80 -2286 0.92 -1444 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.84 -1967 0.82 -1016 0.78 -2177 0.80 -2296 0.92 -1449 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.84 -1966 0.82 -1015 0.78 -2174 0.80 -2293 0.92 -1448 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.84 -1961 0.82 -1013 0.78 -2161 0.80 -2288 0.92 -1443 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.84 -1959 0.82 -1012 0.78 -2158 0.80 -2286 0.92 -1442 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV + RAS 0.84 -1694 0.81 -1071 0.79 -2015 0.80 -2483 0.91 -1351 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.84 -1929 0.82 -1007 0.79 -2135 0.80 -2268 0.92 -1423 Page 283 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV + RAS 0.81 -2229 0.81 -1082 0.73 -2436 0.79 -2487 0.9 -1688 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.85 -1915 0.82 -1009 0.79 -2122 0.80 -2283 0.92 -1409 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV + RAS 0.85 -1915 0.82 -1009 0.79 -2122 0.80 -2283 0.92 -1409 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.84 -1947 0.82 -1014 0.79 -2147 0.80 -2294 0.92 -1434 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.84 -1914 0.82 -1032 0.78 -2133 0.80 -2351 0.92 -1428 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.84 -1922 0.82 -1035 0.78 -2159 0.80 -2358 0.92 -1438 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.84 -1934 0.82 -1013 0.79 -2140 0.80 -2290 0.92 -1427 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.84 -1975 0.82 -1020 0.78 -2192 0.80 -2307 0.92 -1457 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.85 -1861 0.82 -938 0.80 -1976 0.81 -2271 0.93 -1368 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.84 -1920 0.82 -1013 0.79 -2058 0.80 -2294 0.92 -1419 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.87 -1480 0.82 -1108 0.70 -2000 0.80 -2440 0.93 -1070 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.84 -1917 0.82 -1014 0.79 -2129 0.80 -2295 0.92 -1425 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.85 -1898 0.82 -1005 0.79 -1972 0.80 -2283 0.92 -1397 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.84 -1928 0.82 -1011 0.79 -2137 0.80 -2288 0.92 -1423 BF 4708 HATWAI 500 KV BUS + RAS 0.85 -1675 0.82 -1074 0.00 0 0.80 -2397 0.93 -1300 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.85 -1871 0.82 -1014 0.79 -2110 0.80 -2294 0.92 -1396 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV + RAS 0.86 -1676 0.82 -982 0.77 -1073 0.81 -2344 0.93 -1289 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.84 -1972 0.82 -1019 0.78 -2185 0.80 -2301 0.92 -1453 BF 4888 ASHE-SLATT & CGS 500 KV 0.84 -1853 0.82 -1049 0.79 -2048 0.80 -2422 0.92 -1398 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.86 -1845 0.82 -992 0.80 -1938 0.81 -2269 0.93 -1353 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.85 -1882 0.82 -997 0.80 -1949 0.81 -2280 0.93 -1380 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.85 -1868 0.82 -980 0.80 -1948 0.81 -2219 0.93 -1367 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.86 -1859 0.84 -843 0.81 -2040 0.82 -1461 0.94 -1325 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.86 -1856 0.84 -880 0.81 -2036 0.82 -1537 0.94 -1323 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.84 -1953 0.82 -1003 0.79 -2156 0.80 -2252 0.92 -1437 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.85 -1914 0.83 -976 0.79 -2112 0.81 -2183 0.93 -1402 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.84 -1959 0.82 -1011 0.78 -2157 0.80 -2270 0.92 -1442 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.86 -1848 0.83 -964 0.80 -2014 0.81 -2185 0.93 -1350 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.85 -1891 0.82 -992 0.80 -2051 0.81 -2247 0.93 -1381 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.84 -1958 0.82 -1004 0.78 -2157 0.80 -2253 0.92 -1442 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.87 -1807 0.83 -891 0.82 -1989 0.82 -1962 0.94 -1306 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.85 -1895 0.83 -963 0.80 -2087 0.81 -2160 0.93 -1380 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.85 -1857 0.82 -1015 0.79 -2078 0.80 -2296 0.92 -1379 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.85 -1898 0.82 -1016 0.79 -2129 0.80 -2298 0.92 -1418 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.85 -1882 0.82 -1010 0.79 -2089 0.80 -2285 0.92 -1386 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.85 -1898 0.82 -1009 0.79 -2079 0.80 -2285 0.93 -1383 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.84 -1927 0.82 -1015 0.79 -2128 0.80 -2295 0.92 -1423 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.85 -1923 0.82 -985 0.79 -2138 0.81 -2287 0.93 -1414 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.84 -1888 0.82 -1020 0.79 -2111 0.80 -2335 0.92 -1405 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.85 -1861 0.82 -938 0.80 -1976 0.81 -2271 0.93 -1368 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.85 -1813 0.82 -1024 0.80 -1929 0.81 -2333 0.93 -1345 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.85 -1896 0.82 -992 0.80 -2060 0.81 -2252 0.93 -1383 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.85 -1884 0.82 -992 0.80 -2054 0.81 -2257 0.93 -1376 BF 5266 SLATT-BUCKLY 500 KV 0.85 -1918 0.83 -979 0.79 -2135 0.81 -2199 0.93 -1409 Page 284 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.84 -1939 0.82 -1016 0.79 -2135 0.80 -2298 0.92 -1429 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.85 -1916 0.82 -1010 0.79 -2097 0.80 -2292 0.92 -1406 BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.89 -1671 0.89 -491 0.85 -1796 0.85 -1544 0.95 -1152 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.85 -1883 0.88 -552 0.80 -2068 0.82 -1394 0.93 -1376 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.88 -1732 0.89 -350 0.84 -1847 0.71 -1928 0.95 -1212 BF IPC POPULUS-CHILL-HEMINGWAY 500 KV & HEM 500/230 XFMR 0.84 -1924 0.88 -605 0.79 -2123 0.79 -1956 0.92 -1422 BF LOLO 230KV 0.85 -1919 0.82 -1013 0.80 -2079 0.80 -2255 0.93 -1402 BF MCNARY 230 KV SECT 1 0.84 -1897 0.82 -1057 0.79 -2111 0.80 -2386 0.92 -1417 BF MCNARY 230 KV SECT 2 0.84 -1934 0.82 -1034 0.78 -2136 0.80 -2335 0.92 -1433 BF MCNARY 230 KV SECT 3 0.84 -1927 0.82 -1024 0.78 -2125 0.80 -2327 0.92 -1431 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.8973 -1554 0.846 -717 0.87 -1694 0.84 -1483 0.9656 -1067 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV+PTSN 0.898 -1612 0.846 -724 0.86 -1751 0.83 -1502 0.9567 -1108 BF PGE GRASSLAND-COYOTE SP 500KV & CARTY GAS PLANT 0.8483 -1892 0.815 -1017 0.79 -2108 0.80 -2306 0.9183 -1402 BF PGE GRASSLAND-SLATT 500KV & BOARDMAN PLANT 0.8475 -1881 0.816 -1027 0.79 -2100 0.80 -2329 0.9175 -1399 BUS: ALVEY 500 KV + RAS 0.83 -1846 0.82 -1028 0.78 -2178 0.80 -2334 0.91 -1443 BUS: BELL BPA 500 KV 0 0 0.82 -1006 0.84 -1678 0.81 -2283 0.94 -702 BUS: BUCKLEY 500 KV 0.85 -1905 0.83 -962 0.80 -2089 0.81 -2147 0.93 -1394 BUS: DIXONVILLE 500 KV 0.85 -1915 0.83 -968 0.80 -2099 0.81 -2167 0.93 -1394 BUS: HOT SPRINGS 500 KV 0.88 -1569 0.82 -1015 0.84 -1864 0.81 -2283 0.94 -1196 BUS: KEELER 500 KV + RAS 0.84 -1697 0.81 -1072 0.79 -2022 0.80 -2484 0.91 -1357 BUS: ROCK CREEK 500 KV 0.85 -1880 0.82 -991 0.80 -2054 0.81 -2254 0.93 -1374 BUS: SICKLER 500 KV 0.84 -1922 0.82 -1015 0.79 -2132 0.80 -2300 0.92 -1424 BUS: SUMMER LAKE 500 KV 0.86 -1834 0.85 -833 0.81 -2016 0.82 -1441 0.94 -1316 N-1: ALLSTON-KEELER 500 KV + RAS 0.84 -1698 0.81 -1072 0.79 -2024 0.80 -2486 0.91 -1357 N-1: ALLSTON-NAPAVINE 500 KV 0.84 -1926 0.82 -1011 0.79 -2136 0.80 -2287 0.92 -1422 N-1: ALLSTON-PAUL #2 500 KV 0.84 -1926 0.82 -1011 0.79 -2137 0.80 -2287 0.92 -1422 N-1: ALVERY-DIXONVILLE 500 KV 0.85 -1913 0.83 -967 0.80 -2097 0.81 -2160 0.93 -1393 N-1: ALVEY-MARION 500 KV 0.85 -1914 0.83 -975 0.79 -2103 0.81 -2182 0.93 -1398 N-1: ASHE-HANFORD 500 KV 0.84 -1949 0.82 -1015 0.78 -2131 0.80 -2297 0.92 -1434 N-1: ASHE-LOW MON 500 KV 0.84 -1917 0.82 -1008 0.79 -2025 0.80 -2289 0.92 -1417 N-1: ASHE-MARION 500 KV 0.85 -1896 0.82 -986 0.79 -2065 0.81 -2227 0.93 -1387 N-1: ASHE-SLATT 500 KV 0.85 -1884 0.82 -996 0.80 -2050 0.81 -2276 0.93 -1376 N-1: BELL-COULEE 500 KV 0.88 -918 0.82 -1006 0.87 -1339 0.81 -2277 0.94 -866 N-1: BELL-TAFT 500 KV 0.8 -1392 0.82 -1009 0.87 -1461 0.81 -2276 0.94 -855 N-1: BIG EDDY-CELILO 500 KV 0.84 -1967 0.82 -1017 0.78 -2174 0.80 -2301 0.92 -1447 N-1: BIG EDDY-JOHN DAY 500 KV 0.84 -1969 0.82 -1018 0.78 -2181 0.80 -2299 0.92 -1451 N-1: BIG EDDY-KNIGHT 500 KV 0.85 -1932 0.82 -1009 0.79 -2142 0.80 -2285 0.92 -1425 N-1: BIG EDDY-OSTRANDER 500 KV 0.84 -1967 0.82 -1016 0.78 -2177 0.80 -2295 0.92 -1449 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.84 -1956 0.82 -955 0.79 -2160 0.81 -2189 0.92 -1439 N-1: BRADY-ANTELOPE 230 KV 0.85 -1925 0.82 -1014 0.79 -2142 0.81 -2290 0.92 -1417 N-1: BROADVIEW-GARRISON #1 500 KV 0.93 -1329 0.82 -1018 0.90 -1528 0.81 -2281 0.97 -881 N-1: BROWNLEE-ONTARIO 230 KV 0.84 -1950 0.83 -922 0.79 -2159 0.82 -2103 0.92 -1435 N-1: BUCKLEY-GRIZZLY 500 KV 0.85 -1920 0.83 -980 0.79 -2131 0.81 -2208 0.93 -1408 N-1: BUCKLEY-MARION 500 KV 0.84 -1959 0.82 -1010 0.78 -2162 0.80 -2273 0.92 -1443 Page 285 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm N-1: BUCKLEY-SLATT 500 KV 0.85 -1918 0.83 -979 0.79 -2135 0.81 -2199 0.93 -1409 N-1: CAPTAIN JACK-OLINDA 500 KV 0.85 -1897 0.83 -961 0.80 -2093 0.81 -2107 0.93 -1382 N-1: CAPTJACK-KFALLS 500 KV 0.85 -1925 0.83 -981 0.79 -2139 0.81 -2192 0.93 -1411 N-1: CASCADE CROSSING 500 KV 0.84 -1957 0.82 -1002 0.78 -2159 0.80 -2242 0.92 -1442 N-1: CHIEF JO-COULEE 500 KV 0.84 -1913 0.82 -1016 0.79 -2137 0.80 -2298 0.92 -1423 N-1: CHIEF JO-MONROE 500 KV 0.84 -1953 0.82 -1015 0.78 -2147 0.80 -2297 0.92 -1439 N-1: CHIEF JO-SICKLER 500 KV 0.84 -1937 0.82 -1016 0.79 -2143 0.80 -2298 0.92 -1430 N-1: COULEE-HANFORD 500 KV 0.85 -1865 0.82 -1010 0.80 -2032 0.81 -2287 0.93 -1361 N-1: COULEE-SCHULTZ 500 KV 0.85 -1889 0.82 -1012 0.79 -2103 0.80 -2289 0.92 -1391 N-1: COVINGTON4-RAVER 500 KV 0.84 -1972 0.82 -1018 0.78 -2183 0.80 -2302 0.92 -1452 N-1: COVINGTON5-RAVER 500 KV 0.84 -1972 0.82 -1018 0.78 -2183 0.80 -2302 0.92 -1452 N-1: COYOTE-LONGHORN 500 KV 0.84 -1967 0.82 -1017 0.78 -2174 0.80 -2301 0.92 -1448 N-1: CUSTERW-MONROE 500 KV 0.85 -1802 0.82 -1015 0.80 -2055 0.80 -2296 0.92 -1346 N-1: DIXONVILLE-MERIDIAN 500 KV 0.85 -1918 0.83 -976 0.79 -2115 0.81 -2187 0.93 -1402 N-1: DRYCREEK-LOLO 230 KV 0.84 -1965 0.82 -1016 0.78 -2173 0.80 -2299 0.92 -1446 N-1: DRYCREEK-N LEWISTON 230 KV 0.84 -1956 0.82 -1020 0.78 -2155 0.80 -2301 0.92 -1440 N-1: DRYCREEK-WALA AVA 230 KV 0.85 -1914 0.82 -1028 0.79 -2083 0.80 -2295 0.92 -1414 N-1: DWORSHAK-HATWAI 500 KV + RAS 0.87 -1636 0.82 -1098 0.70 -1982 0.80 -2407 0.94 -1150 N-1: DWORSHAK-TAFT 500 KV + RAS 0.87 -1501 0.82 -1089 0.70 -2007 0.80 -2399 0.93 -1082 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.84 -1966 0.82 -1018 0.78 -2180 0.80 -2303 0.92 -1453 N-1: ECHO LAKE-RAVER 500 KV 0.84 -1944 0.82 -1016 0.79 -2149 0.80 -2300 0.92 -1434 N-1: ECHO LAKE-SCHULTZ 500 KV 0.84 -1958 0.82 -1016 0.78 -2155 0.80 -2297 0.92 -1443 N-1: ECHO LAKE-SNOK TAP 500 KV 0.85 -1857 0.82 -1015 0.79 -2080 0.80 -2296 0.92 -1380 N-1: GARRISON-TAFT #2 500 KV 0.9 -1416 0.82 -1012 0.88 -1568 0.81 -2256 0.94 -943 N-1: GOLDHILL-PLACER 115 KV 0.84 -1974 0.82 -1019 0.78 -2185 0.80 -2305 0.92 -1453 N-1: GRASSLAND-COYOTE 500 KV 0.84 -1946 0.82 -1009 0.79 -2153 0.80 -2289 0.92 -1433 N-1: GRASSLAND-SLATT 500 KV 0.84 -1961 0.82 -1015 0.78 -2160 0.80 -2283 0.92 -1442 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.85 -1899 0.83 -966 0.80 -2089 0.81 -2170 0.93 -1383 N-1: GRIZZLY-MALIN 500 KV 0.85 -1908 0.83 -957 0.80 -2092 0.81 -2125 0.93 -1389 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.86 -1861 0.83 -924 0.81 -2042 0.81 -2042 0.93 -1335 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.85 -1905 0.83 -955 0.80 -2091 0.81 -2118 0.93 -1387 N-1: GRIZZLY-ROUND BU 500 KV 0.84 -1966 0.82 -1016 0.78 -2173 0.80 -2296 0.92 -1447 N-1: HANFORD-LOW MON 500 KV 0.84 -1938 0.82 -1012 0.78 -2088 0.80 -2292 0.92 -1427 N-1: HANFORD-VANTAGE 500 KV 0.85 -1917 0.82 -1011 0.79 -2097 0.80 -2292 0.92 -1405 N-1: HANFORD-WAUTOMA 500 KV 0.84 -1957 0.82 -1014 0.79 -2151 0.80 -2295 0.92 -1440 N-1: HATWAI 500/230 KV XFMR + RAS 0.84 -1957 0.82 -1019 0.76 -2079 0.80 -2302 0.92 -1441 N-1: HATWAI-LOLO 230 KV 0.84 -1952 0.82 -1023 0.78 -2146 0.80 -2302 0.92 -1438 N-1: HATWAI-LOW GRAN 500 KV + RAS 0.86 -1678 0.82 -982 0.77 -1074 0.81 -2346 0.93 -1290 N-1: HATWAI-N LEWISTON 230 KV 0.84 -1963 0.82 -1019 0.78 -2174 0.80 -2301 0.92 -1443 N-1: HELLS CANYON-BROWNLEE 230 KV 0.85 -1871 0.82 -833 0.80 -2073 0.82 -2057 0.93 -1368 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.85 -1928 0.82 -1042 0.79 -2136 0.80 -2264 0.93 -1414 N-1: HEMINGWAY-GRASSLAND 500 KV 0.89 -1678 0.84 -730 0.85 -1814 0.83 -1519 0.95 -1158 N-1: HEMINGWAY-GRASSLAND 500 KV + PTSN SHUNT 0.88 -1722 0.83 -796 0.84 -1877 0.83 -1673 0.95 -1205 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.85 -1891 0.84 -880 0.80 -2097 0.82 -1534 0.93 -1379 Page 286 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm N-1: HILL TOP 345/230 XFMR 0.84 -1941 0.82 -997 0.79 -2154 0.81 -2236 0.92 -1430 N-1: HORSE HV-MCNARY 230 KV 0.84 -1966 0.82 -1012 0.78 -2173 0.80 -2296 0.92 -1447 N-1: HOT SPRINGS-TAFT 500 KV 0.88 -1569 0.82 -1015 0.84 -1863 0.81 -2283 0.94 -1195 N-1: HUMBOLDT-COYOTE CK 345 KV 0.84 -1975 0.82 -1037 0.78 -2193 0.81 -2233 0.92 -1460 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.84 -1981 0.82 -1026 0.78 -2196 0.80 -2328 0.92 -1465 N-1: ING500-CUSTERW 500 KV 0.84 -1891 0.82 -1017 0.79 -2130 0.80 -2299 0.92 -1407 N-1: JOHN DAY-MARION 500 KV 0.84 -1953 0.82 -1008 0.79 -2148 0.80 -2273 0.92 -1438 N-1: JOHN DAY-ROCK CK 500 KV 0.85 -1913 0.82 -994 0.80 -2083 0.81 -2260 0.93 -1393 N-1: JOHN DAY-SLATT 500 KV 0.84 -1963 0.82 -1007 0.78 -2168 0.80 -2262 0.92 -1446 N-1: KFALLS-MERIDIAN 500 KV 0.84 -1962 0.82 -1011 0.78 -2163 0.80 -2282 0.92 -1443 N-1: KNIGHT-WAUTOMA 500 KV 0.85 -1903 0.82 -994 0.80 -2069 0.81 -2255 0.93 -1387 N-1: LAGRANDE-NORTH POWDER 230 KV 0.85 -1932 0.82 -964 0.79 -2145 0.81 -2246 0.92 -1423 N-1: LANES-MARION 500 KV 0.84 -1950 0.82 -1009 0.79 -2149 0.80 -2277 0.92 -1436 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.84 -1949 0.82 -1015 0.78 -2119 0.80 -2298 0.92 -1436 N-1: LIT GOOSE-LOW MON 500 KV 0.84 -1938 0.82 -1014 0.78 -2098 0.80 -2296 0.92 -1429 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.85 -1909 0.82 -1012 0.79 -2003 0.80 -2294 0.92 -1408 N-1: LOW MON-SAC TAP 500 KV 0.85 -1883 0.82 -1008 0.80 -1988 0.81 -2285 0.93 -1381 N-1: MALIN 500/230 XFMR 0.84 -1955 0.82 -1007 0.79 -2154 0.81 -2265 0.92 -1439 N-1: MALIN-HILLTOP 230 KV 0.84 -1933 0.82 -994 0.79 -2150 0.81 -2227 0.92 -1426 N-1: MALIN-ROUND MTN #1 500 KV 0.85 -1927 0.83 -992 0.79 -2144 0.81 -2211 0.92 -1415 N-1: MALIN-ROUND MTN #2 500 KV 0.85 -1927 0.83 -991 0.79 -2144 0.81 -2207 0.93 -1415 N-1: MALIN-SUMMER LAKE 500 KV 0.84 -1964 0.82 -1013 0.78 -2175 0.81 -2164 0.92 -1449 N-1: MAPLE VLY-ROCKY RH 345 KV 0.84 -1962 0.82 -1016 0.78 -2164 0.80 -2300 0.92 -1444 N-1: MARION-PEARL 500 KV 0.84 -1945 0.82 -1011 0.79 -2146 0.80 -2280 0.92 -1432 N-1: MARION-SANTIAM 500 KV 0.84 -1967 0.82 -1017 0.78 -2173 0.80 -2299 0.92 -1448 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.84 -1968 0.82 -1017 0.78 -2177 0.80 -2301 0.92 -1449 N-1: MCNARY 500/230 KV XFMR 0.84 -1972 0.82 -966 0.78 -2178 0.80 -2297 0.92 -1453 N-1: MCNARY S2-MCNARY S3 230 KV 0.84 -1967 0.82 -1016 0.78 -2174 0.80 -2300 0.92 -1448 N-1: MCNARY-BOARD T1 230 KV 0.84 -1970 0.82 -1011 0.78 -2172 0.80 -2286 0.92 -1447 N-1: MCNARY-JOHN DAY 500 KV 0.84 -1944 0.82 -997 0.79 -2149 0.80 -2264 0.92 -1432 N-1: MCNARY-LONGHORN 500 KV 0.85 -1924 0.82 -987 0.79 -2141 0.81 -2295 0.93 -1416 N-1: MCNARY-ROSS 345 KV 0.84 -1967 0.82 -1009 0.78 -2175 0.80 -2291 0.92 -1449 N-1: MCNARY-ROUNDUP 230 KV 0.85 -1920 0.85 -853 0.79 -2125 0.81 -2155 0.93 -1406 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.85 -1880 0.82 -1006 0.80 -1983 0.81 -2280 0.93 -1380 N-1: MIDPOINT-HEMINGWAY 500 KV 0.87 -1826 0.84 -887 0.82 -2016 0.74 -1984 0.94 -1311 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN SHUNT 0.86 -1877 0.84 -892 0.81 -2065 0.73 -2001 0.94 -1343 N-1: MIDPOINT-HUMBOLDT 345 KV 0.84 -1976 0.82 -1038 0.78 -2193 0.81 -2254 0.92 -1462 N-1: NAPAVINE-PAUL 500 KV 0.84 -1951 0.82 -1015 0.79 -2149 0.80 -2295 0.92 -1436 N-1: OLYMPIA-PAUL 500 KV 0.84 -1972 0.82 -1019 0.78 -2186 0.80 -2305 0.92 -1453 N-1: ONTARIO-CALDWELL 230 KV 0.84 -1957 0.83 -979 0.79 -2159 0.81 -2190 0.92 -1440 N-1: OSTRANDER-KNIGHT 500 KV 0.84 -1959 0.82 -1012 0.78 -2158 0.80 -2287 0.92 -1442 N-1: OSTRANDER-PEARL 500 KV 0.84 -1967 0.82 -1016 0.78 -2175 0.80 -2298 0.92 -1448 N-1: OSTRANDER-TROUTDALE 500 KV 0.84 -1970 0.82 -1018 0.78 -2180 0.80 -2303 0.92 -1450 N-1: OXBOW-BROWNLEE #2 230 KV 0.84 -1968 0.82 -1003 0.78 -2174 0.80 -2288 0.92 -1448 Page 287 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm N-1: OXBOW-LOLO 230 KV 0.85 -1922 0.82 -1003 0.80 -2088 0.80 -2248 0.93 -1405 N-1: PAUL-SATSOP 500 KV 0.84 -1964 0.82 -1017 0.78 -2169 0.80 -2300 0.92 -1445 N-1: PEARL-KEELER 500 KV + RAS 0.85 -1920 0.82 -1009 0.79 -2125 0.80 -2283 0.92 -1408 N-1: PINTO-FOUR CORNER 345 KV 0.84 -1969 0.82 -1019 0.78 -2180 0.80 -2303 0.92 -1451 N-1: PONDEROSA A 500/230 KV XFMR 0.84 -1967 0.82 -1018 0.78 -2176 0.80 -2301 0.92 -1448 N-1: PONDEROSA B 500/230 KV XFMR 0.84 -1966 0.82 -1016 0.78 -2174 0.80 -2298 0.92 -1447 N-1: RAVER-PAUL 500 KV 0.85 -1916 0.82 -1009 0.79 -2124 0.80 -2284 0.92 -1410 N-1: RAVER-TACOMA 500 KV 0.84 -1962 0.82 -1017 0.78 -2166 0.80 -2300 0.92 -1445 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.84 -1973 0.82 -1026 0.78 -2190 0.80 -2332 0.92 -1461 N-1: ROBINSON-HARRY ALLEN 500 KV 0.84 -1962 0.82 -1009 0.78 -2164 0.81 -2263 0.92 -1443 N-1: ROCK CK-WAUTOMA 500 KV 0.85 -1891 0.82 -994 0.80 -2061 0.81 -2260 0.93 -1380 N-1: ROUNDUP-LAGRANDE 230 KV 0.85 -1926 0.83 -937 0.79 -2136 0.81 -2219 0.93 -1412 N-1: SCHULTZ-SICKLER 500 KV 0.84 -1924 0.82 -1015 0.79 -2132 0.80 -2297 0.92 -1421 N-1: SCHULTZ-VANTAGE 500 KV 0.84 -1944 0.82 -1017 0.79 -2139 0.80 -2299 0.92 -1432 N-1: SCHULTZ-WAUTOMA 500 KV 0.85 -1906 0.82 -1011 0.79 -2093 0.80 -2288 0.92 -1389 N-1: SIGURD-GLEN CANYON 230 KV 0.84 -1966 0.82 -1016 0.78 -2171 0.80 -2294 0.92 -1446 N-1: SLATT 500/230 KV XFMR 0.84 -1870 0.82 -1041 0.79 -2094 0.80 -2391 0.92 -1400 N-1: SLATT-LONGHORN 500 KV 0.84 -1964 0.82 -1014 0.78 -2168 0.80 -2293 0.92 -1445 N-1: SNOK TAP-SNOKING 500 KV 0.84 -1959 0.82 -1017 0.78 -2164 0.80 -2301 0.92 -1444 N-1: VANTAGE 500/230 KV XFMR #1 0.84 -1965 0.82 -1016 0.78 -2168 0.80 -2300 0.92 -1446 N-1: VANTAGE 500/230 KV XFMR #2 0.84 -1964 0.82 -1016 0.78 -2168 0.80 -2300 0.92 -1446 N-1: WALLA WALLA-TALBOT 230 KV 0.84 -1943 0.82 -1021 0.79 -2108 0.80 -2294 0.92 -1433 N-1: WALLA WALLA-WALLULA 230 KV 0.84 -1955 0.82 -1010 0.78 -2138 0.80 -2298 0.92 -1441 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.87 -1764 0.82 -956 0.82 -1883 0.81 -2192 0.94 -1277 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.85 -1892 0.83 -979 0.79 -2060 0.81 -2196 0.93 -1386 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.86 -1835 0.83 -940 0.81 -2000 0.81 -2102 0.93 -1338 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.85 -1893 0.82 -982 0.80 -2057 0.81 -2218 0.93 -1385 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.85 -1890 0.83 -975 0.80 -2056 0.81 -2180 0.93 -1384 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.85 -1854 0.82 -975 0.80 -2037 0.81 -2238 0.93 -1360 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.85 -1876 0.82 -991 0.80 -2046 0.81 -2265 0.93 -1372 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.84 -1963 0.82 -1014 0.78 -2169 0.80 -2290 0.92 -1446 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.84 -1968 0.82 -1015 0.78 -2178 0.80 -2294 0.92 -1450 N-2: BETHEL-CEDAR SP 500KV & BETHEL-ROUND BUTTE 230 KV 0.8405 -1967 0.825 -1010 0.78 -2175 0.81 -2263 0.92 -1451 N-2: BETHEL-CEDAR SP 500KV & BETHEL-SANTIAM 230KV 0.8405 -1966 0.824 -1009 0.78 -2175 0.81 -2262 0.92 -1450 N-2: BETHEL-CEDAR SP 500KV & SANTIAM-MIKKALO 500KV 0.8402 -1958 0.824 -1004 0.78 -2167 0.81 -2247 0.92 -1443 N-2: GRASSLAND-CEDAR SP 500KV & SLATT-BUCKLEY 500KV 0.8491 -1910 0.831 -959 0.79 -2117 0.81 -2127 0.9295 -1404 N-2: GRASSLAND-COYOTE 500KV & SLATT-LONGHORN 500KV 0.8405 -1934 0.824 -1003 0.78 -2148 0.81 -2280 0.92 -1424 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.85 -1935 0.8 -794 0.79 -2163 0.83 -1872 0.93 -1421 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.85 -1936 0.8 -795 0.79 -2163 0.83 -1868 0.93 -1421 N-2: BRIDGER-POPULUS #1 & #2 345 KV + RAS 0.88 -1617 0.84 -805 0.84 -1777 0.84 -1451 0.95 -1146 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.89 -1569 0.85 -761 0.85 -1746 0.86 -1193 0.95 -1122 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.81 -1896 0.82 -1071 0.71 -2417 0.78 -2513 0.82 -1660 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.87 -1808 0.82 -840 0.82 -1989 0.82 -1902 0.94 -1302 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.85 -1870 0.82 -823 0.80 -2075 0.82 -2045 0.93 -1368 Page 288 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.84 -1949 0.82 -1001 0.78 -2141 0.80 -2244 0.92 -1436 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.84 -1910 0.82 -1013 0.79 -2122 0.80 -2292 0.92 -1415 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.84 -1943 0.82 -1014 0.79 -2137 0.80 -2293 0.92 -1432 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.84 -1943 0.82 -1015 0.79 -2142 0.80 -2297 0.92 -1434 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.84 -1926 0.82 -1015 0.79 -2134 0.80 -2295 0.92 -1424 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.84 -1905 0.82 -1015 0.79 -2131 0.80 -2296 0.92 -1419 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.86 -1765 0.82 -998 0.81 -1884 0.81 -2274 0.93 -1271 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.86 -1769 0.82 -1001 0.81 -1922 0.81 -2265 0.93 -1287 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.85 -1734 0.82 -1014 0.81 -1990 0.80 -2293 0.93 -1306 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.82 -2001 0.81 -1078 0.76 -2299 0.80 -2478 0.91 -1552 N-2: DC-BIPOLE 0.86 -1803 0.83 -918 0.80 -2090 0.82 -1972 0.93 -1384 N-2: DOUBLE PALO VERDE 0.89 -1558 0.83 -565 0.84 -1734 0.83 -1966 0.94 -1142 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.84 -1966 0.82 -1018 0.78 -2180 0.80 -2303 0.92 -1454 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.84 -1955 0.82 -1017 0.78 -2159 0.80 -2302 0.92 -1449 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.8 -1805 0.82 -1062 0.70 -2304 0.80 -2360 0.82 -1542 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV + RAS 0.85 -1774 0.83 -897 0.81 -2030 0.81 -1952 0.93 -1327 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV + RAS 0.86 -1710 0.84 -857 0.82 -1960 0.82 -1892 0.94 -1262 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV + RAS 0.84 -1924 0.83 -990 0.78 -2188 0.81 -2062 0.92 -1442 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.85 -1920 0.82 -1010 0.78 -2002 0.80 -2285 0.92 -1412 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.85 -1916 0.82 -996 0.79 -2103 0.81 -2265 0.93 -1411 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.84 -1975 0.82 -1026 0.78 -2200 0.80 -2299 0.92 -1475 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.84 -1956 0.82 -1009 0.78 -2155 0.80 -2270 0.92 -1441 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV + RAS 0.84 -1629 0.82 -964 0.81 -2023 0.81 -2205 0.92 -1325 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV + RAS 0.84 -1807 0.82 -973 0.80 -2096 0.81 -2214 0.92 -1389 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.84 -1949 0.82 -1001 0.78 -2141 0.80 -2244 0.92 -1436 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.85 -1919 0.82 -995 0.79 -2121 0.80 -2233 0.92 -1409 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.85 -1914 0.82 -986 0.80 -2084 0.81 -2250 0.93 -1394 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.84 -1964 0.82 -1011 0.78 -2168 0.80 -2279 0.92 -1447 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.84 -1959 0.82 -1004 0.78 -2158 0.80 -2276 0.92 -1442 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.84 -1946 0.82 -1008 0.79 -2146 0.80 -2278 0.92 -1433 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV + RAS OPEN 69 KV 0.86 -1704 0.82 -966 0.78 -1059 0.81 -2310 0.94 -1264 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.82 -1809 0.82 -1060 0.78 -2242 0.80 -2328 0.91 -1492 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.86 -1869 0.83 -967 0.80 -2064 0.81 -2211 0.93 -1367 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.84 -1941 0.82 -989 0.79 -2149 0.80 -2255 0.92 -1431 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.84 -1943 0.82 -987 0.79 -2148 0.80 -2251 0.92 -1432 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.84 -1966 0.82 -1003 0.78 -2173 0.80 -2285 0.92 -1448 N-2: MIDPOINT-HEMINGWAY 500 KV & MIDPOINT-KING 230 KV 0.87 -1816 0.84 -877 0.82 -2007 0.74 -1971 0.94 -1290 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.85 -1790 0.82 -1013 0.80 -2040 0.80 -2291 0.93 -1336 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.85 -1921 0.82 -1010 0.79 -2127 0.80 -2285 0.92 -1414 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV + RAS 0.85 -1920 0.82 -1009 0.79 -2126 0.80 -2284 0.92 -1409 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.84 -1967 0.82 -1016 0.78 -2175 0.80 -2296 0.92 -1448 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.84 -1968 0.82 -1016 0.78 -2177 0.80 -2296 0.92 -1449 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.84 -1983 0.82 -1019 0.78 -2198 0.80 -2305 0.92 -1461 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.84 -1925 0.82 -1014 0.79 -2137 0.80 -2295 0.92 -1424 Page 289 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Bell Brownlee Hatwai Hemingway Taft V Qm V Qm V Qm V Qm V Qm N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.85 -1914 0.82 -1009 0.79 -2120 0.80 -2282 0.92 -1406 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.85 -1894 0.82 -1006 0.79 -2084 0.80 -2276 0.93 -1388 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.85 -1912 0.82 -1007 0.79 -2116 0.80 -2278 0.92 -1402 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.84 -1941 0.82 -1011 0.79 -2127 0.80 -2288 0.92 -1434 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.84 -1967 0.82 -1017 0.78 -2175 0.80 -2301 0.92 -1450 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.84 -1962 0.82 -1017 0.78 -2167 0.80 -2301 0.92 -1446 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV + RAS 0.86 -1843 0.82 -1009 0.80 -1999 0.81 -2282 0.93 -1348 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV + RAS 0.85 -1909 0.82 -1014 0.79 -2116 0.80 -2295 0.92 -1411 N-2: TAFT-BELL & TAFT-DWORSKAK 500 KV + RAS 0.8 -1276 0.82 -1105 0.70 -1983 0.80 -2385 0.98 -471 N-2: TAFT-BELL 500 KV & BELL-LANCASTER 230 KV + RAS 0.8 -1303 0.82 -1021 0.88 -1315 0.81 -2305 0.94 -771 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV + RAS 0.8 -1575 0.82 -1043 0.85 -1643 0.80 -2366 0.93 -964 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.8 -1389 0.82 -1009 0.87 -1461 0.81 -2276 0.94 -855 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV 0.8 -1384 0.82 -1004 0.89 -1239 0.81 -2261 0.94 -734 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV + RAS 0.93 -932 0.82 -1107 0.70 -2003 0.80 -2397 0.95 -643 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.85 -1867 0.82 -989 0.80 -2047 0.81 -2252 0.93 -1366 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.85 -1867 0.82 -989 0.80 -2047 0.81 -2252 0.93 -1366 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.84 -1921 0.82 -1010 0.79 -2117 0.80 -2284 0.92 -1424 Page 290 of 776 Appendix C – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure C6: N-1 Loss of Hemingway-Boardman 500 kV Line (Angle & Voltage Plots) Page 291 of 776 Appendix C – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure C7: N-1 Loss of Hatwai-Lower Granite 500 kV Line (Angle & Voltage Plots) Page 292 of 776 Appendix C – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure C8: Bi-Pole Loss of Pacific DC Intertie (Angle & Voltage Plots) Page 293 of 776 Appendix C – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure C9: N-2 Loss of Two Palo Verde Units (Angle & Voltage Plots) Page 294 of 776 Appendix C – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure C10: N-2 Loss of Malin-Round Mt #1 & #2 500 kV Lines (Angle & Voltage Plots) Page 295 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 None Wood Rvr 138 L Salm 3 13.8 Wood Rvr 138 Palis g4 11.5 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV Var 15.9% 0.829 15.9% 59.840 Damped Hemingway 500 kV N-1 8 Libby 1-5 Generation Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Hardingn 13.8 Stable & 3 Cy 3PH Hatwai-Lower Granite 500 kV 18 Lancaster Generation 11.6% 0.852 11.6% 59.764 Damped Hatwai 500 kV Bi-pole Block FACRI insertion of Ft Rock Series Caps, Malin C1, CaptJack C1 Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Sync_g19 13.8 Stable & PDCI Bipole Var 11.4% 0.854 11.4% 59.762 Damped Tracy&Olinda React Switching NW 2550 MW Gen Drop N-2 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Sync_g19 13.8 Stable & Loss of 2 Palo Verde units Var 11.8% 0.850 11.8% 59.760 Damped N-2 Malin-Round Mt #1 500 kV Chief Jo Braking Resistor Mtshasta 69 Yuba 69 Mtshasta 69 Lakeview 69 Stable & 4 Cy 3PH Malin-Round Mt #2 500 kV Var Tracy&Olinda React Switching 16.0% 0.799 16.0% 59.738 Damped Malin 500 kV Round Mt-Table Mt #2 500 kV NW 2400 MW Gen Drop Flash Malin-Round Mt S-Caps Page 296 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV + RAS OPEN Shunt TAFT_500.0 (41057) #s BF 4028 Taft-Dworshak & Taft Reactor 500kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4028 Taft-Dworshak & Taft Reactor 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV SET SWITCHED SHUNT AT BUS BENEWAH_230.0 (48037) TO 201.3 MVR BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN InjectionGroup RAS Libby Gen Drop BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN Load MILCTYDC_230.0 (63010) #D1 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN Bus MILCTYDC_230.0 (63010) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS SET SWITCHED SHUNT AT BUS CUSTER_230.0 (63003) TO -22 MVR BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN Shunt CUSTER_230.0 (63003) #1 Page 297 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr SET SWITCHED SHUNT AT BUS KLAFALLS_230.0 (45161) TO 91.4 MVR BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 Page 298 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4708 Hatwai 500 kV Bus + RAS OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 201.3 MVR BF 4708 Hatwai 500 kV Bus + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR BF 4708 Hatwai 500 kV Bus + RAS OPEN Shunt GARRISON_500.0 (40459) #s BF 4708 Hatwai 500 kV Bus + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4708 Hatwai 500 kV Bus + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 Page 299 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV + RAS OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 Page 300 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS N POWDER_ 34.5 (60313) TO 27 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 13 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 200 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS N POWDER_ 34.5 (60313) TO 27 MVR BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) Page 301 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Bell BPA 500 kV OPEN InjectionGroup RAS Lancaster Gen Drop Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Page 302 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Coulee 500 kV OPEN InjectionGroup RAS Lancaster Gen Drop N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: Captain Jack-Olinda 500 kV SET SWITCHED SHUNT AT BUS WEED JCT_115.0 (45335) TO 30.3 MVR N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop N-1: Dworshak-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-1: Dworshak-Taft 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Dworshak-Taft 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-1: Dworshak-Taft 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 Page 303 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-1: Hatwai-Low Gran 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV CLOSE Shunt OREBASIN_ 34.5 (66146) #1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt CLOSE Shunt OREBASIN_ 34.5 (66146) #1 N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt MIDPOINT_345.0 (60235) #2 N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 Page 304 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 Page 305 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN Load MILCTYDC_230.0 (63010) #D1 N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN Bus MILCTYDC_230.0 (63010) N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS SET SWITCHED SHUNT AT BUS CUSTER_230.0 (63003) TO -22 MVR N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Taft-Bell & Taft-Dworskak 500 kV + RAS SET SWITCHED SHUNT AT BUS GARRISON_500.0 (40459) TO -558 MVR N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN Gen BRIDGER1_ 22.0 (60086) #1 N-2: Bridger-Populus #1 & #2 345 kV + RAS SET LOAD AT BUS BRIDGER1_ 22.0 (60086) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN Gen BRIDGER2_ 22.0 (60087) #1 N-2: Bridger-Populus #1 & #2 345 kV + RAS SET LOAD AT BUS BRIDGER2_ 22.0 (60087) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI21_345.0 (61967) CKT 2 TO -0.017307 pu N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI11_345.0 (61968) CKT 1 TO -0.017307 pu N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SERIES CAP REACTANCE AT BRI3MI11_345.0 (61999) TO 3MIKNOLL_345.0 (60084) CKT 1 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV + RAS CLOSE Shunt BORAH_345.0 (60060) #1 N-2: Bridger-Populus #1 & #2 345 kV + RAS BYPASS SeriesCap BURNS_500.0 (45029) TO BURSUM11_500.0 (90132) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR Page 306 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN Gen BRIDGER1_ 22.0 (60086) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET LOAD AT BUS BRIDGER1_ 22.0 (60086) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN Gen BRIDGER2_ 22.0 (60087) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET LOAD AT BUS BRIDGER2_ 22.0 (60087) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI21_345.0 (61967) CKT 2 TO -0.017307 pu N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI11_345.0 (61968) CKT 1 TO -0.017307 pu N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SERIES CAP REACTANCE AT BRI3MI11_345.0 (61999) TO 3MIKNOLL_345.0 (60084) CKT 1 TO 50 % of present N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS CLOSE Shunt BORAH_345.0 (60060) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BYPASS SeriesCap BURNS_500.0 (45029) TO BURSUM11_500.0 (90132) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS CLOSE Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt PTRSNFLT_230.0 (62030) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt OREBASIN_230.0 (66145) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt FRANNIE2_ 34.5 (67145) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt GARLAND1_ 34.5 (67147) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 Page 307 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR Page 308 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS COLV BPA_115.0 (40263) TO 39.3 MVR N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BELL S2_230.0 (40088) TO 407.5 MVR N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS COLV BPA_115.0 (40263) TO 39.3 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS BELL S2_230.0 (40088) TO 407.5 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit Page 309 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV + RAS Open 69 kV OPEN InjectionGroup RAS Lower Granite Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 kV + RAS Open 69 kV OPEN InjectionGroup RAS Libby Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 kV + RAS Open 69 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV + RAS Open 69 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Lower Granite-Central Ferry #1 & #2 500 kV + RAS Open 69 kV OPEN Line MILL CRK_ 69.0 (45205) TO WAITBURG_ 69.0 (45323) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 Page 310 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV + RAS OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV + RAS OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV + RAS SET INJECTION GROUP RAS Boundary Gen Drop TO 400 MW in generator merit order by opening N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV + RAS SET SWITCHED SHUNT AT BUS COLV BPA_115.0 (40263) TO 39.3 MVR N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 Page 311 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN Load MILCTYDC_230.0 (63010) #D1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN Bus MILCTYDC_230.0 (63010) N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS SET SWITCHED SHUNT AT BUS CUSTER_230.0 (63003) TO -22 MVR N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN Shunt CUSTER_230.0 (63003) #1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV CLOSE Shunt BETHEL5_500.0 (43041) #1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500kV + RAS OPEN Bus HOT SPR_500.0 (40553) BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai-Low Gran 500 kV + RAS OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap MIKKALO_500.0 (43970) TO MKLOSNT2_500.0 (43971) CKT 2 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap SANTIAM_500.0 (40941) TO SANTMKO2_500.0 (43492) CKT 2 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 Page 312 of 776 Appendix C - 16hs2a_3400WoH_2250idnw_N Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 Page 313 of 776 Appendix D 16hs2a_2250idnw_ms Base Case (MSTI & SWIP, SWIP South 1500 MW) Page 314 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D1: 16hs2sa_2250idnw_N_ms Case Pre-Contingency 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 445.3 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 9 M W - 1 3 1 M v a r 1 4 9 8 M W - 1 6 5 M v a r 1 7 2 8 M W - 2 1 2 M v a r 1615 MW -158 Mvar 284 MW 62 Mvar 248 MW 59 Mvar 289 MW 70 Mvar 1.02 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD447.6 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT -85.7 Mvar 1.07 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.7 Mvar 1.08 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.03 puIDAHO-NV 1.03 puKINPORT 186.6 Mvar 1.08 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 6 M W - 4 1 M v a r 1 7 4 2 M W - 9 7 M v a r 1769 MW -75 Mvar 1773 MW -77 Mvar 434 MW -33 Mvar 877 MW 12 Mvar 1555 MW -119 Mvar 1080 MW -78 Mvar 898 MW -98 Mvar 154 MW -40 Mvar 982 MW -150 Mvar 940 MW 321 Mvar 555 MW 133 Mvar 2 3 5 M W - 2 6 M v a r 198 MW -43 Mvar 428 MW -53 Mvar 741 MW -43 Mvar 202 MW 15 Mvar 194 MW 11 Mvar 496 MW -9 Mvar 1.05 puANTICLIN 422 MW 2 Mvar 422 MW 0 Mvar 5 MW -101 Mvar 3 MW -87 Mvar 314 MW -48 Mvar 428 MW -53 Mvar 181 MW 17 Mvar 288 MW 52 Mvar 635 MW -127 Mvar 175 MW -67 Mvar 40 MW -46 Mvar 28 MW -49 Mvar 701 MW 176 Mvar 424 MW 72 Mvar 415 MW -272 Mvar 1072 MW -119 Mvar 203 MW -37 Mvar 130 MW -25 Mvar 159 MW -23 Mvar 136 MW -19 Mvar 33 MW -0 Mvar 2 5 9 M W 1 0 M v a r 41 MW 21 Mvar 163 MW -52 Mvar 30 MW -53 Mvar 7 MW -28 Mvar 23 MW -25 Mvar 22 MW -28 Mvar 4 4 4 M W - 1 1 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 33 MW -0 Mvar 39 MW 15 Mvar 325 MW 34 Mvar 2 9 4 M W - 4 5 M v a r 64 MW -3 Mvar 378 MW -53 Mvar 293 MW -16 Mvar 293 MW -16 Mvar 302 MW -21 Mvar 304 MW -39 Mvar 191 MW -52 Mvar 247 MW -63 Mvar 1 3 9 M W 4 8 M v a r 1 3 9 M W 4 5 M v a r 1080 MW -113 Mvar 773 MW 107 Mvar 181 MW 10 Mvar 598 MW -67 Mvar 555 MW -9 Mvar 515 MW -45 Mvar 431 MW 22 Mvar 340 MW 9 Mvar 334 MW 9 Mvar 383 MW -9 Mvar 392 MW -10 Mvar 375 MW 26 Mvar 4 0 3 M W 9 4 M v a r 1176 MW -139 Mvar 1 5 0 7 M W 8 M v a r 1 4 7 1 M W 3 6 M v a r 1 3 1 7 M W - 8 M v a r 1319 MW -127 Mvar ID-NW = -2250 MW Grassland = -1407 MW Summer Lake = -289 MW Lolo = -294 MW Walla Walla = -146 MW LaGrande = -130 MW Midpoint West = -1264 MW Borah West = -445 MW Idaho-Sierra = 235 MW N of John Day = 7776 MW COI = 4794 MW PDCI = 3101 MW ID-MT = -252 MW W of McNary = 4373 MW W of Slatt = 4879 MW Alturas Project = 3 MW Path C = -1507 MW Montana Southeast = 545 MW TOT 2B1 = -4 MW TOT 2C = -0 MW 290 MW -68 Mvar 141 MW 36 Mvar 1081 MW 15 Mvar 1117 MW -49 Mvar 277 M W 93 M v a r 9 8 1 M W - 1 2 5 M v a r 1 4 0 7 M W 2 0 9 M v a r 1350 MW -317 Mvar Page 315 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D2: 16hs2sa_2250idnw_N_ms Case N-1: Hemingway-Grassland 500 kV + PTSN Shunt 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.03 puHEMINWAY 426.8 Mvar 1.05 puPONDROSA 0.0 Mvar 1 7 8 4 M W - 1 0 3 M v a r 1 6 6 3 M W - 1 3 5 M v a r 2 1 5 7 M W - 1 9 9 M v a r 2067 MW -183 Mvar 390 MW 60 Mvar 341 MW 59 Mvar 896 MW -132 Mvar 1.00 puHEMINWAY 1.07 pu JOHN DAY 435.8 Mvar 1.07 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.07 pu GRASSLND 173.0 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD443.8 Mvar 1.07 puCDR SPRG 1.06 puBUCKLEY 1.00 puLAGRANDE 52.4 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 155.7 Mvar 116.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.05 puMIDPOINT -83.0 Mvar 1.06 puCEDARHIL 0.0 Mvar 1.06 puBORAH 1.01 puMIDPOINT 0.0 Mvar 178.2 Mvar 1.07 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.03 puIDAHO-NV 1.03 puKINPORT 184.6 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.9 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 7 2 M W 4 5 M v a r 2 0 5 0 M W 7 0 M v a r 2022 MW 83 Mvar 2027 MW 81 Mvar 460 MW -57 Mvar 1032 MW 72 Mvar 1075 MW -118 Mvar 600 MW -95 Mvar 997 MW -27 Mvar 620 MW 122 Mvar 602 MW -109 Mvar 431 MW 366 Mvar 430 MW 96 Mvar 1 9 9 M W - 3 6 M v a r 268 MW -12 Mvar 351 MW -86 Mvar 597 MW -96 Mvar 181 MW 2 Mvar 172 MW -3 Mvar 467 MW -25 Mvar 1.05 puANTICLIN 433 MW 11 Mvar 433 MW 9 Mvar 30 MW 113 Mvar 27 MW 97 Mvar 313 MW -49 Mvar 351 MW -86 Mvar 158 MW 13 Mvar 291 MW 55 Mvar 637 MW -127 Mvar 151 MW -79 Mvar 21 MW -56 Mvar 8 MW -60 Mvar 742 MW 198 Mvar 466 MW 79 Mvar 269 MW -263 Mvar 1182 MW -94 Mvar 265 MW -23 Mvar 189 MW -36 Mvar 217 MW -44 Mvar 135 MW -21 Mvar 32 MW -0 Mvar 3 2 5 M W 4 6 M v a r 103 MW 28 Mvar 245 MW -49 Mvar 1 MW 54 Mvar 23 MW 29 Mvar 7 MW 26 Mvar 9 MW 30 Mvar 5 2 1 M W 9 M v a r HORSEFLT 0.99 puBOISEBCH 91.7 Mvar 0.0 Mvar 1.00 puONTARIO 32 MW -0 Mvar 53 MW 22 Mvar 369 MW 53 Mvar 3 5 3 M W - 5 6 M v a r 114 MW -36 Mvar 412 MW -71 Mvar 328 MW -15 Mvar 328 MW -15 Mvar 338 MW -20 Mvar 341 MW -45 Mvar 214 MW -59 Mvar 276 MW -73 Mvar 1 3 8 M W 5 3 M v a r 1 3 8 M W 5 0 M v a r 1192 MW -43 Mvar 670 MW 116 Mvar 179 MW 16 Mvar 553 MW -55 Mvar 495 MW -5 Mvar 460 MW -43 Mvar 378 MW 23 Mvar 281 MW 6 Mvar 276 MW 6 Mvar 299 MW -16 Mvar 306 MW -17 Mvar 203 MW -3 Mvar 4 6 2 M W 1 2 5 M v a r 1575 MW -142 Mvar 1 6 5 9 M W 1 0 M v a r 1 6 2 8 M W 4 3 M v a r 1 1 4 0 M W - 9 4 M v a r 1142 MW -193 Mvar ID-NW = -1653 MW Grassland = 0 MW Summer Lake = -896 MW Lolo = -353 MW Walla Walla = -224 MW LaGrande = -189 MW Midpoint West = -821 MW Borah West = -319 MW Idaho-Sierra = 199 MW N of John Day = 7510 MW COI = 5050 MW PDCI = 3101 MW ID-MT = -303 MW W of McNary = 4117 MW W of Slatt = 5857 MW Alturas Project = 36 MW Path C = -1426 MW Montana Southeast = 603 MW TOT 2B1 = -30 MW TOT 2C = -26 MW 908 MW -58 Mvar 33 MW 29 Mvar 956 MW 50 Mvar 998 MW -33 Mvar 277 M W 104 M v a r 9 9 4 M W - 8 7 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 316 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D3: 16hs2sa_2250idnw_N_ms Case BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.04 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.03 puHEMINWAY 423.9 Mvar 1.04 puPONDROSA 0.0 Mvar 1 8 1 9 M W - 1 1 4 M v a r 1 6 8 6 M W - 1 4 3 M v a r 2 1 8 3 M W - 2 2 1 M v a r 2080 MW -206 Mvar 361 MW 63 Mvar 316 MW 61 Mvar 881 MW -144 Mvar 1.00 puHEMINWAY 1.06 pu JOHN DAY 429.8 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.3 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD441.0 Mvar 1.05 puCDR SPRG 1.05 puBUCKLEY 1.00 puLAGRANDE 52.5 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 0.99 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 155.6 Mvar 116.7 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.05 puMIDPOINT -82.4 Mvar 1.06 puCEDARHIL 0.0 Mvar 1.06 puBORAH 1.01 puMIDPOINT 0.0 Mvar 177.3 Mvar 1.07 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.02 puIDAHO-NV 1.03 puKINPORT 184.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.8 Mvar 0.0 Mvar 0.0 Mvar 1.06 puMARION 0.0 Mvar 1 6 4 3 M W 3 4 M v a r 2 3 1 0 M W 1 6 5 M v a r 2069 MW 105 Mvar 2074 MW 103 Mvar 643 MW -65 Mvar 0 MW 0 Mvar 690 MW -132 Mvar 214 MW -118 Mvar 1092 MW 19 Mvar 1265 MW 174 Mvar 312 MW -92 Mvar 424 MW 360 Mvar 430 MW 91 Mvar 2 0 1 M W - 3 8 M v a r 270 MW -3 Mvar 350 MW -92 Mvar 593 MW -105 Mvar 181 MW -1 Mvar 173 MW -5 Mvar 467 MW -28 Mvar 1.05 puANTICLIN 434 MW 14 Mvar 433 MW 12 Mvar 29 MW 116 Mvar 27 MW 99 Mvar 312 MW -48 Mvar 350 MW -92 Mvar 158 MW 13 Mvar 292 MW 57 Mvar 638 MW -126 Mvar 151 MW -81 Mvar 21 MW -57 Mvar 8 MW -62 Mvar 744 MW 203 Mvar 468 MW 82 Mvar 177 MW -252 Mvar 1289 MW -96 Mvar 274 MW -27 Mvar 197 MW -43 Mvar 225 MW -52 Mvar 134 MW -21 Mvar 31 MW 0 Mvar 3 3 5 M W 4 5 M v a r 113 MW 27 Mvar 252 MW -50 Mvar 6 MW 53 Mvar 29 MW 28 Mvar 13 MW 25 Mvar 14 MW 29 Mvar 5 2 7 M W 9 M v a r HORSEFLT 0.99 puBOISEBCH 91.4 Mvar 0.0 Mvar 1.00 puONTARIO 31 MW 0 Mvar 54 MW 23 Mvar 372 MW 54 Mvar 3 5 7 M W - 5 8 M v a r 118 MW -28 Mvar 414 MW -74 Mvar 330 MW -13 Mvar 330 MW -13 Mvar 341 MW -19 Mvar 344 MW -45 Mvar 215 MW -61 Mvar 278 MW -75 Mvar 1 3 8 M W 5 4 M v a r 1 3 8 M W 5 1 M v a r 1300 MW 2 Mvar 585 MW 128 Mvar 218 MW 22 Mvar 576 MW -38 Mvar 486 MW 2 Mvar 452 MW -37 Mvar 370 MW 28 Mvar 273 MW 9 Mvar 268 MW 9 Mvar 287 MW -12 Mvar 293 MW -13 Mvar 179 MW 1 Mvar 4 6 8 M W 1 2 6 M v a r 1913 MW -176 Mvar 1 6 8 3 M W - 4 M v a r 1 6 5 0 M W 3 0 M v a r 1 1 6 9 M W - 1 0 2 M v a r 1170 MW -206 Mvar ID-NW = -1656 MW Grassland = 0 MW Summer Lake = -881 MW Lolo = -357 MW Walla Walla = -230 MW LaGrande = -197 MW Midpoint West = -821 MW Borah West = -319 MW Idaho-Sierra = 201 MW N of John Day = 7471 MW COI = 5031 MW PDCI = 3101 MW ID-MT = -304 MW W of McNary = 4000 MW W of Slatt = 5536 MW Alturas Project = 35 MW Path C = -1427 MW Montana Southeast = 608 MW TOT 2B1 = -28 MW TOT 2C = -24 MW 893 MW -73 Mvar 26 MW 24 Mvar 866 MW 69 Mvar 913 MW -26 Mvar 276 M W 106 M v a r 1 0 7 2 M W - 3 3 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 317 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D4: 16hs2sa_2250idnw_N_ms Case N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 439.9 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 1 3 M W - 1 3 5 M v a r 1 5 9 6 M W - 1 6 5 M v a r 2 0 0 4 M W - 2 4 9 M v a r 1908 MW -222 Mvar 356 MW 52 Mvar 311 MW 51 Mvar 697 MW -98 Mvar 1.02 puHEMINWAY 1.07 pu JOHN DAY 432.2 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.06 puLONGHORN 1.06 puSACJWA T 1.04 puMCNRY S1 1.06 puASHE 0.0 Mvar 1.06 pu GRASSLND 167.8 Mvar 1.06 puCOYOTE 1.06 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.07 puHANFORD432.7 Mvar 1.06 puCDR SPRG 1.06 puBUCKLEY 1.01 puLAGRANDE 53.0 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.00 puTALBOT QUARTZTP 1.00 puWALA AVA 0.99 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 156.1 Mvar 117.1 Mvar 1.00 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.00 puLOLO 1.01 puHATWAI 1.06 puHATWAI 1.06 puLOW GRAN 1.06 puCEN FERY 0.0 Mvar 1.06 puLIT GOOS 1.01 puOXBOW 1.06 puMIDPOINT -84.4 Mvar 1.07 puCEDARHIL 0.0 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 180.2 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.03 puIDAHO-NV 1.03 puKINPORT 185.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.9 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 4 0 8 M W - 2 0 M v a r 1 8 0 6 M W - 5 2 M v a r 1957 MW 6 Mvar 1962 MW 3 Mvar 383 MW -44 Mvar 844 MW 0 Mvar 1729 MW -21 Mvar 1254 MW -37 Mvar 910 MW -55 Mvar 343 MW -16 Mvar 1170 MW -98 Mvar 1755 MW -158 Mvar 567 MW 106 Mvar 2 0 1 M W - 3 2 M v a r 314 MW -45 Mvar 293 MW -56 Mvar 521 MW -59 Mvar 161 MW 12 Mvar 152 MW 7 Mvar 469 MW -12 Mvar 1.05 puANTICLIN 448 MW 9 Mvar 448 MW 8 Mvar 53 MW 102 Mvar 47 MW 87 Mvar 304 MW -37 Mvar 293 MW -56 Mvar 129 MW 29 Mvar 291 MW 57 Mvar 639 MW -127 Mvar 128 MW -68 Mvar 2 MW -45 Mvar 12 MW 49 Mvar 791 MW 187 Mvar 519 MW 64 Mvar 406 MW -207 Mvar 1114 MW -115 Mvar 244 MW -29 Mvar 169 MW -34 Mvar 197 MW -39 Mvar 172 MW -37 Mvar 70 MW -4 Mvar 3 0 3 M W 3 2 M v a r 42 MW 38 Mvar 231 MW -57 Mvar 30 MW -58 Mvar 7 MW -33 Mvar 23 MW -30 Mvar 22 MW -34 Mvar 5 0 9 M W 5 M v a r HORSEFLT 0.99 puBOISEBCH 92.4 Mvar 0.0 Mvar 1.00 puONTARIO 70 MW -4 Mvar 45 MW 25 Mvar 398 MW 54 Mvar 3 7 4 M W - 7 0 M v a r 96 MW -26 Mvar 409 MW -75 Mvar 326 MW -19 Mvar 326 MW -19 Mvar 336 MW -24 Mvar 340 MW -49 Mvar 222 MW -71 Mvar 287 MW -89 Mvar 1 3 6 M W 5 3 M v a r 1 3 6 M W 4 9 M v a r 1123 MW -82 Mvar 911 MW 96 Mvar 236 MW 10 Mvar 739 MW -58 Mvar 711 MW -16 Mvar 661 MW -40 Mvar 570 MW 11 Mvar 491 MW -9 Mvar 483 MW -8 Mvar 601 MW -32 Mvar 615 MW -33 Mvar 814 MW -45 Mvar 4 7 8 M W 1 3 3 M v a r 1149 MW -172 Mvar 1 5 9 6 M W - 1 3 M v a r 1 5 6 4 M W 1 8 M v a r 1 1 8 9 M W - 5 8 M v a r 1191 MW -162 Mvar ID-NW = -3241 MW Grassland = -1802 MW Summer Lake = -697 MW Lolo = -374 MW Walla Walla = -210 MW LaGrande = -169 MW Midpoint West = -2142 MW Borah West = -215 MW Idaho-Sierra = 201 MW N of John Day = 8725 MW COI = 4933 MW PDCI = 3101 MW ID-MT = -373 MW W of McNary = 4604 MW W of Slatt = 4926 MW Alturas Project = 27 MW Path C = -1421 MW Montana Southeast = 738 MW TOT 2B1 = -24 MW TOT 2C = -18 MW 705 MW -119 Mvar 75 MW 56 Mvar 1320 MW -53 Mvar 1363 MW -71 Mvar 272 M W 102 M v a r 1 0 4 0 M W - 7 9 M v a r 1 8 0 2 M W 5 5 6 M v a r 1704 MW -809 Mvar Page 318 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D5: 16hs2sa_2250idnw_N_ms Case N-2: DC-BIPOLE 1.04 puMALIN 0.0 Mvar 215.4 Mvar 215.4 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.02 puHEMINWAY 412.8 Mvar 1.08 puPONDROSA 0.0 Mvar 2 1 5 3 M W - 2 5 4 M v a r 1 9 6 5 M W - 2 4 7 M v a r 2 6 9 0 M W - 5 3 7 M v a r 2638 MW -61 Mvar 300 MW -11 Mvar 263 MW -6 Mvar 717 MW -2 Mvar 0.99 puHEMINWAY 1.08 pu JOHN DAY 447.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.07 pu GRASSLND 173.2 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD454.0 Mvar 1.07 puCDR SPRG 1.07 puBUCKLEY 1.02 puLAGRANDE 54.8 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 157.8 Mvar 118.3 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.02 puOXBOW 1.02 puMIDPOINT -78.7 Mvar 1.02 puCEDARHIL 0.0 Mvar 1.04 puBORAH 0.99 puMIDPOINT 0.0 Mvar 170.9 Mvar 1.05 puPOPULUS 0.0 Mvar 1.00 puBORAH 0.0 Mvar 0.99 puADELAIDE 1.00 puIDAHO-NV 1.01 puKINPORT 179.0 Mvar 1.07 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 218.5 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 7 0 1 M W - 6 M v a r 1 9 8 5 M W - 1 8 M v a r 2556 MW 92 Mvar 2563 MW 88 Mvar 268 MW -54 Mvar 823 MW -6 Mvar 1596 MW -58 Mvar 1120 MW -27 Mvar 921 MW -89 Mvar 163 MW 14 Mvar 1046 MW -95 Mvar 1322 MW 224 Mvar 708 MW 100 Mvar 2 6 9 M W - 4 7 M v a r 201 MW 116 Mvar 487 MW -131 Mvar 777 MW -159 Mvar 228 MW -10 Mvar 221 MW -15 Mvar 515 MW -81 Mvar 1.04 puANTICLIN 431 MW 38 Mvar 431 MW 36 Mvar 57 MW -130 Mvar 47 MW -112 Mvar 272 MW -68 Mvar 487 MW -131 Mvar 170 MW -13 Mvar 287 MW 66 Mvar 643 MW -126 Mvar 194 MW -98 Mvar 67 MW -67 Mvar 57 MW -72 Mvar 724 MW 268 Mvar 470 MW 118 Mvar 472 MW -265 Mvar 982 MW -101 Mvar 221 MW -31 Mvar 147 MW -25 Mvar 176 MW -26 Mvar 129 MW -19 Mvar 26 MW -1 Mvar 2 7 8 M W 2 2 M v a r 70 MW 18 Mvar 174 MW -48 Mvar 15 MW -51 Mvar 7 MW 26 Mvar 9 MW -23 Mvar 7 MW -26 Mvar 4 7 1 M W 3 M v a r HORSEFLT 0.99 puBOISEBCH 91.9 Mvar 0.0 Mvar 1.00 puONTARIO 26 MW -1 Mvar 42 MW 16 Mvar 327 MW 38 Mvar 3 0 0 M W - 4 2 M v a r 77 MW -10 Mvar 391 MW -54 Mvar 308 MW -5 Mvar 308 MW -5 Mvar 318 MW -10 Mvar 321 MW -31 Mvar 196 MW -46 Mvar 253 MW -56 Mvar 1 2 7 M W 6 7 M v a r 1 2 7 M W 6 4 M v a r 989 MW -123 Mvar 642 MW 212 Mvar 230 MW -34 Mvar 617 MW -90 Mvar 539 MW -22 Mvar 500 MW -58 Mvar 413 MW 12 Mvar 313 MW 0 Mvar 307 MW 1 Mvar 348 MW -23 Mvar 356 MW -24 Mvar 280 MW 5 Mvar 4 1 9 M W 1 0 4 M v a r 883 MW -149 Mvar 2 0 4 2 M W 1 6 0 M v a r 1 9 1 8 M W 2 0 2 M v a r 1 8 9 2 M W 1 7 M v a r 1896 MW -212 Mvar ID-NW = -2815 MW Grassland = -1511 MW Summer Lake = -717 MW Lolo = -300 MW Walla Walla = -157 MW LaGrande = -147 MW Midpoint West = -1696 MW Borah West = -573 MW Idaho-Sierra = 269 MW N of John Day = 6965 MW COI = 6254 MW PDCI = 0 MW ID-MT = -266 MW W of McNary = 4244 MW W of Slatt = 4682 MW Alturas Project = 46 MW Path C = -1704 MW Montana Southeast = 557 MW TOT 2B1 = 95 MW TOT 2C = 124 MW 724 MW -8 Mvar 123 MW -22 Mvar 996 MW 56 Mvar 1025 MW -19 Mvar 253 M W 131 M v a r 9 3 4 M W - 1 2 8 M v a r 1 5 1 1 M W 4 1 4 M v a r 1442 MW -373 Mvar Page 319 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D6: 16hs2sa_2250idnw_N_ms Case N-2: Double Palo Verde 1.06 puMALIN 0.0 Mvar 220.3 Mvar 220.3 Mvar 0.0 Mvar 0.0 Mvar 1.06 puCAPTJACK 221.0 Mvar 221.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.00 puHEMINWAY 398.9 Mvar 1.08 puPONDROSA 0.0 Mvar 2 0 3 4 M W - 4 2 5 M v a r 1 8 5 6 M W - 3 9 1 M v a r 2 5 5 0 M W - 5 9 5 M v a r 2487 MW -147 Mvar 286 MW 99 Mvar 249 MW 91 Mvar 668 MW 87 Mvar 0.98 puHEMINWAY 1.06 pu JOHN DAY 431.0 Mvar 1.05 puMCNARY 1.06 puSLATT 0.0 Mvar 1.06 puLONGHORN 1.06 puSACJWA T 1.04 puMCNRY S1 1.05 puASHE 0.0 Mvar 1.06 pu GRASSLND 167.0 Mvar 1.06 puCOYOTE 1.06 puLOW MON 0.0 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.05 puHANFORD422.9 Mvar 1.05 puCDR SPRG 1.06 puBUCKLEY 1.01 puLAGRANDE 53.5 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.00 puTALBOT QUARTZTP 1.00 puWALA AVA 1.00 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 155.2 Mvar 116.4 Mvar 1.00 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.00 puLOLO 1.01 puHATWAI 1.06 puHATWAI 1.06 puLOW GRAN 1.06 puCEN FERY 0.0 Mvar 1.06 puLIT GOOS 1.01 puOXBOW 1.00 puMIDPOINT -75.7 Mvar 1.00 puCEDARHIL 0.0 Mvar 1.03 puBORAH 0.97 puMIDPOINT 0.0 Mvar 165.8 Mvar 1.04 puPOPULUS 0.0 Mvar 0.99 puBORAH 0.0 Mvar 0.98 puADELAIDE 0.99 puIDAHO-NV 1.00 puKINPORT 175.4 Mvar 1.06 puANTICLIN 0.0 Mvar 1.00 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.00 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.04 puBRIDGER 217.4 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 7 4 8 M W - 1 3 0 M v a r 2 0 2 7 M W - 9 1 M v a r 2349 MW -108 Mvar 2355 MW -112 Mvar 261 MW -36 Mvar 850 MW -6 Mvar 1650 MW -23 Mvar 1174 MW -48 Mvar 986 MW -48 Mvar 103 MW -21 Mvar 1166 MW -106 Mvar 1269 MW 308 Mvar 700 MW 91 Mvar 2 6 9 M W - 5 6 M v a r 192 MW 156 Mvar 494 MW -158 Mvar 770 MW -199 Mvar 233 MW -18 Mvar 227 MW -23 Mvar 531 MW -95 Mvar 1.04 puANTICLIN 435 MW 54 Mvar 435 MW 52 Mvar 69 MW -142 Mvar 57 MW -123 Mvar 257 MW -71 Mvar 494 MW -158 Mvar 161 MW -19 Mvar 286 MW 74 Mvar 646 MW -123 Mvar 196 MW -109 Mvar 72 MW -75 Mvar 63 MW -80 Mvar 731 MW 296 Mvar 488 MW 123 Mvar 495 MW -196 Mvar 1208 MW -147 Mvar 218 MW -31 Mvar 144 MW -27 Mvar 173 MW -29 Mvar 150 MW -31 Mvar 48 MW -4 Mvar 2 7 5 M W 2 2 M v a r 20 MW 38 Mvar 187 MW -60 Mvar 41 MW -58 Mvar 18 MW -33 Mvar 34 MW -29 Mvar 33 MW -33 Mvar 4 8 7 M W 1 0 M v a r HORSEFLT 0.98 puBOISEBCH 90.0 Mvar 0.0 Mvar 0.99 puONTARIO 48 MW -4 Mvar 43 MW 18 Mvar 353 MW 36 Mvar 3 2 7 M W - 5 9 M v a r 72 MW -12 Mvar 401 MW -61 Mvar 317 MW -3 Mvar 317 MW -3 Mvar 327 MW -8 Mvar 330 MW -30 Mvar 208 MW -55 Mvar 268 MW -68 Mvar 1 2 2 M W 7 8 M v a r 1 2 1 M W 7 4 M v a r 1218 MW -77 Mvar 1076 MW 4 Mvar 127 MW 67 Mvar 645 MW -13 Mvar 623 MW 8 Mvar 579 MW -22 Mvar 487 MW 29 Mvar 392 MW 5 Mvar 385 MW 6 Mvar 462 MW -17 Mvar 473 MW -18 Mvar 506 MW -33 Mvar 4 0 4 M W 1 1 1 M v a r 1308 MW -218 Mvar 1 9 1 1 M W - 5 2 M v a r 1 8 1 3 M W 3 6 M v a r 1 7 9 2 M W - 1 4 0 M v a r 1795 MW -352 Mvar ID-NW = -2768 MW Grassland = -1477 MW Summer Lake = -668 MW Lolo = -327 MW Walla Walla = -169 MW LaGrande = -144 MW Midpoint West = -1663 MW Borah West = -593 MW Idaho-Sierra = 269 MW N of John Day = 9083 MW COI = 5908 MW PDCI = 3101 MW ID-MT = -287 MW W of McNary = 4701 MW W of Slatt = 5409 MW Alturas Project = 45 MW Path C = -1774 MW Montana Southeast = 608 MW TOT 2B1 = 159 MW TOT 2C = 122 MW 675 MW 67 Mvar 102 MW -40 Mvar 1323 MW -79 Mvar 1341 MW -88 Mvar 243 M W 152 M v a r 1 0 4 3 M W - 9 4 M v a r 1 4 7 7 M W 4 1 3 M v a r 1409 MW -381 Mvar Page 320 of 776 Appendix D– 16hs2sa_2250idnw_N_ms Case Post-Transient Contingency Results Figure D7: 16hs2sa_2250idnw_N_ms Case N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 448.0 Mvar 1.09 puPONDROSA 0.0 Mvar 1 1 6 7 M W - 2 2 9 M v a r 1 1 1 2 M W - 2 6 7 M v a r 1 1 4 8 M W - 2 6 3 M v a r 1066 MW -184 Mvar 328 MW 34 Mvar 287 MW 34 Mvar 77 MW -141 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 445.8 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.4 Mvar 1.08 puCOYOTE 1.09 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD455.4 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 55.9 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.03 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.04 puBROWNLEE 160.7 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.09 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT -86.6 Mvar 1.07 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.1 Mvar 1.08 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.04 puIDAHO-NV 1.03 puKINPORT 187.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.6 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 0 M W 0 M v a r 8 7 3 M W - 1 4 5 M v a r 0 MW 0 Mvar 3340 MW 146 Mvar 867 MW -21 Mvar 953 MW 37 Mvar 1515 MW -100 Mvar 1039 MW -52 Mvar 754 MW -113 Mvar 378 MW 4 Mvar 799 MW -136 Mvar 755 MW 337 Mvar 501 MW 140 Mvar 2 3 2 M W - 2 3 M v a r 272 MW -62 Mvar 377 MW -37 Mvar 682 MW -25 Mvar 182 MW 20 Mvar 174 MW 15 Mvar 481 MW -9 Mvar 1.05 puANTICLIN 437 MW -1 Mvar 437 MW -2 Mvar 28 MW 91 Mvar 25 MW 78 Mvar 325 MW -49 Mvar 377 MW -37 Mvar 169 MW 23 Mvar 298 MW 47 Mvar 644 MW -136 Mvar 156 MW -62 Mvar 21 MW -41 Mvar 8 MW -44 Mvar 760 MW 167 Mvar 491 MW 55 Mvar 369 MW -284 Mvar 1056 MW -89 Mvar 208 MW -36 Mvar 135 MW -25 Mvar 163 MW -24 Mvar 129 MW -17 Mvar 26 MW -0 Mvar 2 6 4 M W 1 2 M v a r 62 MW 15 Mvar 156 MW -48 Mvar 19 MW -50 Mvar 3 MW 25 Mvar 13 MW -22 Mvar 11 MW -25 Mvar 4 5 0 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.3 Mvar 0.0 Mvar 1.02 puONTARIO 26 MW -0 Mvar 39 MW 14 Mvar 317 MW 34 Mvar 2 8 6 M W - 4 1 M v a r 62 MW -5 Mvar 385 MW -55 Mvar 297 MW -16 Mvar 297 MW -16 Mvar 306 MW -22 Mvar 309 MW -41 Mvar 190 MW -49 Mvar 246 MW -61 Mvar 1 3 5 M W 4 8 M v a r 1 3 4 M W 4 5 M v a r 1064 MW -88 Mvar 417 MW 187 Mvar 297 MW -32 Mvar 626 MW -95 Mvar 545 MW -22 Mvar 507 MW -57 Mvar 420 MW 13 Mvar 322 MW 3 Mvar 316 MW 4 Mvar 360 MW -17 Mvar 368 MW -18 Mvar 310 MW 23 Mvar 4 0 4 M W 9 8 M v a r 1395 MW -85 Mvar 1 1 1 8 M W - 7 6 M v a r 1 0 9 7 M W - 5 0 M v a r 1 1 4 0 M W - 6 8 M v a r 1141 MW -162 Mvar ID-NW = -1976 MW Grassland = -1515 MW Summer Lake = 77 MW Lolo = -286 MW Walla Walla = -139 MW LaGrande = -135 MW Midpoint West = -1085 MW Borah West = -347 MW Idaho-Sierra = 232 MW N of John Day = 6813 MW COI = 4171 MW PDCI = 3101 MW ID-MT = -246 MW W of McNary = 4184 MW W of Slatt = 4292 MW Alturas Project = -30 MW Path C = -1436 MW Montana Southeast = 508 MW TOT 2B1 = -14 MW TOT 2C = 0 MW 77 MW 20 Mvar 114 MW 45 Mvar 926 MW 65 Mvar 963 MW -18 Mvar 269 M W 93 M v a r 9 3 6 M W - 1 2 2 M v a r 1 5 1 5 M W 2 8 5 M v a r 1449 MW -419 Mvar Page 321 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1550.96 1550 100.1% 1782.5 87.0% BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 362.71 676.03 650 104.0% 780.0 86.7% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1552.06 1550 100.1% 1782.5 87.1% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 636.27 1204.25 978.99 123.0% 1287.7 93.5% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 306.62 777.51 722.94 107.5% 1265.2 61.5% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1595.95 1550 103.0% 1782.5 89.5% BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1584.96 1550 102.3% 1782.5 88.9% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1708.65 2936.12 2441.96 120.2% 3235.5 90.7% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1708.65 2936.12 2199.94 133.5% 3279.9 89.5% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1707.51 2929.07 2666.9 109.8% 4000.0 73.2% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at ROUND MT Branch Amp 1698.77 2918.34 2667.01 109.4% 4000.0 73.0% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1560.59 1550 100.7% 1782.5 87.6% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1662.21 2840.25 2699.69 105.2% 4000.0 71.0% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1654.87 2824.6 2699.69 104.6% 4000.0 70.6% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1607.22 1550 103.7% 1782.5 90.2% BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1560.85 1550 100.7% 1782.5 87.6% BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1567.85 1550 101.2% 1782.5 88.0% BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1708.65 2970.18 2441.96 121.6% 3235.5 91.8% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1708.65 2970.18 2199.94 135.0% 3279.9 90.6% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1707.51 2962.82 2666.9 111.1% 4000.0 74.1% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1698.77 2952.35 2667.01 110.7% 4000.0 73.8% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1572.08 1550 101.4% 1782.5 88.2% BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1580.09 1550 101.9% 1782.5 88.6% BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.18 326.36 320 102.0% 370.0 88.2% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 682.79 1039.75 950 109.4% 1286.0 80.9% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.18 333.11 320 104.1% 370.0 90.0% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 682.79 1051.56 950 110.7% 1286.0 81.8% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations Page 322 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1051.11 1009.11 104.2% 1285.2 81.8% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1553.51 1550 100.2% 1782.5 87.2% BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1584.42 1550 102.2% 1782.5 88.9% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS DWOR 2 (40363) % Δ Volts 1.010 1.070 5.94% BF 4708 Hatwai 500 kV Bus TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1642.28 1550 106.0% 1782.5 92.1% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1622.33 1550 104.7% 1782.5 91.0% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1574.89 1550 101.6% 1782.5 88.4% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1553.04 1550 100.2% 1782.5 87.1% BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1581.28 1550 102.0% 1782.5 88.7% BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1579.72 1550 101.9% 1782.5 88.6% BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1561.55 1550 100.7% 1782.5 87.6% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1580.51 1550 102.0% 1782.5 88.7% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1590.19 1550 102.6% 1782.5 89.2% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1555.09 1550 100.3% 1782.5 87.2% BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1587.51 1550 102.4% 1782.5 89.1% BF 5018 Ashe-Slatt & Slatt-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1573.59 1550 101.5% 1782.5 88.3% BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations Page 323 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1611.9 1550 104.0% 1782.5 90.4% BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1565.36 1550 101.0% 1782.5 87.8% BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.49 1550 100.1% 1782.5 87.0% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1584.42 1550 102.2% 1782.5 88.9% BF 5214 Low Mon-McNary & Calpine PH 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1581.77 1550 102.0% 1782.5 88.7% BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1568.24 1550 101.2% 1782.5 88.0% BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1574.76 1550 101.6% 1782.5 88.3% BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1724.95 1550 111.3% 1782.5 96.8% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1295.85 1237.04 104.8% 1395.9 92.8% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 929.19 919.99 101.0% 1046.8 88.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1555.42 1550 100.3% 1782.5 87.3% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1599.51 1550 103.2% 1782.5 89.7% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1568.69 1550 101.2% 1782.5 88.0% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1734.93 1550 111.9% 1782.5 97.3% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1306.2 1237.04 105.6% 1395.9 93.6% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 936.15 919.99 101.8% 1046.8 89.4% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1023.5 1009.11 101.4% 1285.2 79.6% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV PTRSNFLT (62030) % Δ Volts 1.000 0.950 5.00% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1733.4 1550 111.8% 1782.5 97.2% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1302.84 1237.04 105.3% 1395.9 93.3% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 932.23 919.99 101.3% 1046.8 89.1% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1022.88 1009.11 101.4% 1285.2 79.6% BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.88 1550 100.1% 1782.5 87.1% BF PGE Grassland-Slatt 500kV & Boardman Plant No Violations Bus: Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1030.57 1009.11 102.1% 1285.2 80.2% Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1553.61 1550 100.2% 1782.5 87.2% Bus: Dixonville 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1557.75 1550 100.5% 1782.5 87.4% Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS No Violations Bus: Rock Creek 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1574.43 1550 101.6% 1782.5 88.3% Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1584.77 1550 102.2% 1782.5 88.9% N-1: Allston-Keeler 500 kV + RAS No Violations Page 324 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1557.03 1550 100.5% 1782.5 87.4% N-1: Alvey-Marion 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.92 1550 100.1% 1782.5 87.1% N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1095.53 1009.11 108.6% 1285.2 85.2% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1555.01 1550 100.3% 1782.5 87.2% N-1: Ashe-Slatt 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1579.29 1550 101.9% 1782.5 88.6% N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.44 1550 100.1% 1782.5 87.0% N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1552.21 1550 100.1% 1782.5 87.1% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 249.76 822.5 785.7 104.7% 926.3 88.8% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 249.76 822.5 785.7 104.7% 926.3 88.8% N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1708.65 2569.7 2441.96 105.2% 3235.5 79.4% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1708.65 2569.7 2199.94 116.8% 3279.9 78.3% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1819.11 2428.57 2199.94 110.4% 3280.5 74.0% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1803.72 2408.03 2199.94 109.5% 3280.5 73.4% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2004.23 2641.4 2477.87 106.6% 4000.0 66.0% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1034.04 1009.11 102.5% 1285.2 80.5% N-1: Cedar Hill-Robinson 500 kV (SWIP) No Violations N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1560.19 1550 100.7% 1782.5 87.5% N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1552.57 1550 100.2% 1782.5 87.1% N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 636.27 1162.18 978.99 118.7% 1287.7 90.3% Page 325 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Dixonville-Meridian 500 kV GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 306.62 727.89 722.94 100.7% 1265.2 57.5% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1649.26 1550 106.4% 1782.5 92.5% N-1: Dworshak-Taft 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1595.95 1550 103.0% 1782.5 89.5% N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.88 1550 100.1% 1782.5 87.1% N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1564.14 1550 100.9% 1782.5 87.7% N-1: Grizzly-Malin 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1554.02 1550 100.3% 1782.5 87.2% N-1: Grizzly-Malin 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1749.71 2408.31 2400.04 100.3% 3799.0 63.4% N-1: Grizzly-Ponderosa A-Summer L 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1594.92 1550 102.9% 1782.5 89.5% N-1: Grizzly-Ponderosa B-Capt Jack 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1554.4 1550 100.3% 1782.5 87.2% N-1: Grizzly-Ponderosa B-Capt Jack 500 kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1749.71 2407.12 2400.04 100.3% 3799.0 63.4% N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1574.72 1550 101.6% 1782.5 88.3% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1563.47 1550 100.9% 1782.5 87.7% N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 933.91 919.99 101.5% 1046.8 89.2% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1717.09 1550 110.8% 1782.5 96.3% N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1290.98 1237.04 104.4% 1395.9 92.5% N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 924.24 919.99 100.5% 1046.8 88.3% N-1: Hemingway-Grassland 500 kV + FACRI TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1618.46 1550 104.4% 1782.5 90.8% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1749.71 2843.6 2400.04 118.5% 3799.0 74.9% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1743.73 2826.45 2400.04 117.8% 3799.0 74.4% N-1: Hemingway-Grassland 500 kV + PTSN Shunt TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1723.86 1550 111.2% 1782.5 96.7% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1284.96 1237.04 103.9% 1395.9 92.1% N-1: Hemingway-Summer Lake 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1560.7 1550 100.7% 1782.5 87.6% N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations Page 326 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1573.68 1550 101.5% 1782.5 88.3% N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1566.61 1550 101.1% 1782.5 87.9% N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1574.07 1550 101.6% 1782.5 88.3% N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1708.65 2938.03 2441.96 120.3% 3235.5 90.8% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1708.65 2938.03 2199.94 133.6% 3279.9 89.6% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALROU21 Branch Amp 1707.51 2930.7 2666.9 109.9% 4000.0 73.3% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1698.77 2920.51 2667.01 109.5% 4000.0 73.0% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALROU11 Branch Amp 1662.21 2909.68 2699.69 107.8% 4000.0 72.7% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1654.87 2896.78 2699.69 107.3% 4000.0 72.4% N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.39 1550 100.1% 1782.5 87.0% N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1575.93 1550 101.7% 1782.5 88.4% N-1: Midpoint-Hemingway 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1591.37 1550 102.7% 1782.5 89.3% N-1: Midpoint-Humboldt 345 kV No Violations N-1: Midpoint-Townsend 500 kV (MSTI) LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 992.01 919.99 107.8% 1046.8 94.8% N-1: Midpoint-Townsend 500 kV (MSTI) HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1256.17 1237.04 101.5% 1395.9 90.0% N-1: Midpoint-Townsend 500 kV (MSTI) MIDHEM11 (61988) -> MIDPOINT (60240) CKT 1 at MIDPOINT Branch Amp 1182.83 1883.33 1732.05 108.7% 2338.3 80.5% N-1: Midpoint-Townsend 500 kV (MSTI) PTRSNFLT (62030) % Δ Volts 1.000 0.930 7.00% N-1: Midpoint-Townsend 500 kV (MSTI) AMPS (65025) % Δ Volts 1.000 0.940 6.00% N-1: Midpoint-Townsend 500 kV (MSTI) PTRSNFUR (62386) % Δ Volts 1.010 0.950 5.94% N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 741.86 989.82 919.99 107.6% 1046.8 94.6% N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1082.18 1254.45 1237.04 101.4% 1395.9 89.9% Page 327 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt MIDHEM11 (61988) -> MIDPOINT (60240) CKT 1 at MIDPOINT Branch Amp 1182.83 1877.64 1732.05 108.4% 2338.3 80.3% N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1568.04 1550 101.2% 1782.5 88.0% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.18 349.07 320 109.1% 370.0 94.3% N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 682.79 1177.33 950 123.9% 1286.0 91.5% N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.18 324.84 320 101.5% 370.0 87.8% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 682.79 1034.73 950 108.9% 1286.0 80.5% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1551.99 1550 100.1% 1782.5 87.1% N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 91.85 161 150 107.3% 180.0 89.4% N-1: Robinson-Harry Allen 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 296.31 429.81 415.69 103.4% 483.5 88.9% N-1: Robinson-Harry Allen 500 kV CHCGO PK (32224) -> HIGGINS (32232) CKT 1 at CHCGO PK Branch Amp 533.36 662.04 652.66 101.4% 893.6 74.1% N-1: Rock Ck-Wautoma 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1573.55 1550 101.5% 1782.5 88.3% N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1819.11 3259.15 2199.94 148.1% 3280.5 99.3% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 1808.64 3244.97 2667.01 121.7% 3280.5 98.9% N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUND MT Branch Amp 1819.11 3259.15 2667.01 122.2% 4000.0 81.5% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 2004.23 2971.66 2667.01 111.4% 4000.0 74.3% N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2004.23 2971.66 2477.87 119.9% 4000.0 74.3% N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at VACA-DIX Branch Amp 1977.58 2950.84 2667.01 110.6% 4000.0 73.8% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1501.76 2665.77 2229.96 119.5% 3555.9 75.0% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1624.35 1550 104.8% 1782.5 91.1% Page 328 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Ashe-Marion & Buckley-Marion 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1553.65 1550 100.2% 1782.5 87.2% N-2: Ashe-Marion & Slatt-Buckley 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1580.25 1550 102.0% 1782.5 88.7% N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1557.29 1550 100.5% 1782.5 87.4% N-2: Ashe-Marion & Slatt-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1554.43 1550 100.3% 1782.5 87.2% N-2: Ashe-Slatt & McNary-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1589.15 1550 102.5% 1782.5 89.2% N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1586.02 1550 102.3% 1782.5 89.0% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS No Violations N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1046.61 1009.11 103.7% 1285.2 81.4% N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 919.13 1033.79 1009.11 102.4% 1285.2 80.4% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1555 1550 100.3% 1782.5 87.2% N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1555.62 1550 100.4% 1782.5 87.3% N-2: Bridger-Populus #1 & #2 345 kV No Violations N-2: Broadview-Townsend #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1621 1550 104.6% 1782.5 90.9% N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1565.16 1550 101.0% 1782.5 87.8% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1587.43 1550 102.4% 1782.5 89.1% N-2: Coulee-Schultz #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1580 1550 101.9% 1782.5 88.6% N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE SCATERGD (26066) -> OLYMPC (26087) CKT 2 at OLYMPC Branch Amp 811.04 910.52 876.07 103.9% 1001.6 90.9% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1749.71 2926.47 2400.04 121.9% 3799.0 77.0% N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1743.73 2913.84 2400.04 121.4% 3799.0 76.7% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1819.11 2362.56 2199.94 107.4% 3280.5 72.0% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1803.72 2342.59 2199.94 106.5% 3280.5 71.4% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1708.65 2296.77 2199.94 104.4% 3279.9 70.0% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2004.23 2540.07 2477.87 102.5% 4000.0 63.5% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1531.36 2159.92 2134 101.2% 3499.9 61.7% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1514.76 2136.61 2134 100.1% 3499.9 61.0% N-2: DC-BIPOLE ROBINSON (64895) % Δ Volts 1.080 1.020 5.56% N-2: DC-BIPOLE YORKCANY (12091) % Δ Volts 1.000 0.950 5.00% N-2: Double Palo Verde TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1629.76 1550 105.1% 1782.5 91.4% N-2: Double Palo Verde HESPERUS (79071) -> COYOTE G (79191) CKT 1 at HESPERUS Branch Amp 353.74 434.36 431.76 100.6% 441.8 98.3% N-2: Double Palo Verde GLCRWND2 (62397) -> SHELBY T (62128) CKT 1 at GLCRWND2 Branch Amp 398.83 401.75 401.63 100.0% 530.2 75.8% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1749.71 2767.78 2400.04 115.3% 3799.0 72.9% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1743.73 2752.74 2400.04 114.7% 3799.0 72.5% Page 329 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Double Palo Verde ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1819.11 2227.13 2199.94 101.2% 3280.5 67.9% N-2: Double Palo Verde ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1803.72 2208.32 2199.94 100.4% 3280.5 67.3% N-2: Double Palo Verde SHELBY T (62128) -> SHELBY 2 (62027) CKT 1 at SHELBY T Branch Amp 398.43 401.67 401.63 100.0% 1001.6 40.1% N-2: Double Palo Verde YORKCANY (12091) % Δ Volts 1.000 0.920 8.00% N-2: Double Palo Verde ROBINSON (64895) % Δ Volts 1.080 1.000 7.41% N-2: Double Palo Verde CIMARRON (12148) % Δ Volts 1.000 0.930 7.00% N-2: Double Palo Verde MONTROSE (79049) % Δ Volts 1.000 0.930 7.00% N-2: Double Palo Verde PTRSNFLT (62030) % Δ Volts 1.000 0.930 7.00% N-2: Double Palo Verde RAINVL_T (12130) % Δ Volts 1.000 0.930 7.00% N-2: Double Palo Verde RAINVL1 (12129) % Δ Volts 1.000 0.930 7.00% N-2: Double Palo Verde SPRINGER (12077) % Δ Volts 1.000 0.930 7.00% N-2: Double Palo Verde PTRSNFUR (62386) % Δ Volts 1.010 0.940 6.93% N-2: Double Palo Verde ROBINSON (64885) % Δ Volts 1.030 0.960 6.80% N-2: Double Palo Verde CEDARHIL (60159) % Δ Volts 1.070 1.000 6.54% N-2: Double Palo Verde MIDPOINT (60240) % Δ Volts 1.070 1.000 6.54% N-2: Double Palo Verde BACA (10026) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde BULLOCK (79079) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde DOUGHSPN (79182) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde GUNVAL (79184) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde HAPPYCAN (79082) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde LOSTCANY (79045) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde NORTHMSA (79085) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde PEACHVLY (72801) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde SPRCKTAP (79115) % Δ Volts 0.990 0.930 6.06% N-2: Double Palo Verde AMPS (65025) % Δ Volts 1.000 0.940 6.00% N-2: Double Palo Verde BIGGRASS (65155) % Δ Volts 1.000 0.940 6.00% N-2: Double Palo Verde DILLON S (62084) % Δ Volts 1.000 0.940 6.00% N-2: Double Palo Verde EMPIRETS (79075) % Δ Volts 1.000 0.940 6.00% N-2: Double Palo Verde TOWAOC (79122) % Δ Volts 1.000 0.940 6.00% N-2: Double Palo Verde ARRIBA (10016) % Δ Volts 1.010 0.950 5.94% N-2: Double Palo Verde ARRIBA_T (10018) % Δ Volts 1.010 0.950 5.94% N-2: Double Palo Verde CLIFTON (70113) % Δ Volts 1.010 0.950 5.94% N-2: Double Palo Verde GALLINAT (10484) % Δ Volts 1.010 0.950 5.94% N-2: Double Palo Verde GRANDJCT (79036) % Δ Volts 1.010 0.950 5.94% N-2: Double Palo Verde STORRIE (12079) % Δ Volts 1.010 0.950 5.94% N-2: Double Palo Verde HORIZON (70233) % Δ Volts 1.020 0.960 5.88% N-2: Double Palo Verde VALENCIA (10357) % Δ Volts 1.020 0.960 5.88% N-2: Double Palo Verde WBK 25 (50742) % Δ Volts 1.020 0.960 5.88% N-2: Double Palo Verde HEMINWAY (60155) % Δ Volts 1.060 1.000 5.66% N-2: Double Palo Verde BLUEDOOR (79073) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde CORTEZ (79012) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde E.CORTEZ (79074) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde GARNET M (79103) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde GARNETAP (79104) % Δ Volts 0.990 0.940 5.05% Page 330 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Double Palo Verde GRANDJCT (79034) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde GRANDJCT (79035) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde LOSTCANY (79044) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde MCKENZIX (79193) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde MONTROSE (79048) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde SOCANAL (79192) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde STRNELSN (79183) % Δ Volts 0.990 0.940 5.05% N-2: Double Palo Verde VALENCIA (10356) % Δ Volts 0.990 0.940 5.05% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV No Violations N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1593.07 1550 102.8% 1782.5 89.4% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1749.71 3391.49 2400.04 141.3% 3799.0 89.3% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1418.46 3235.36 2700.04 119.8% 4000.0 80.9% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1558.8 1550 100.6% 1782.5 87.5% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1639.66 3210.84 2400.04 133.8% 4099.2 78.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1625.28 3197.94 2400.04 133.2% 4099.2 78.0% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1639.66 3168.64 2400.04 132.0% 4099.2 77.3% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON12 Branch Amp 1625.28 3157.73 2400.04 131.6% 4099.2 77.0% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1557.04 1550 100.5% 1782.5 87.4% N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1579 1550 101.9% 1782.5 88.6% N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1865.91 3190.86 2900.03 110.0% 4350.0 73.4% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS JOHN DAY (40585) -> GRIJOH12 (90065) CKT 1 at JOHN DAY Branch Amp 1890.75 3568.7 3500.01 102.0% 3500.01 102.0% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH11 (90064) -> GRIZZLY (40489) CKT 1 at GRIJOH11 Branch Amp 1882.74 3561.71 3500.01 101.8% 3500.0 101.8% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH12 Branch Amp 1882.74 3561.71 3000.03 118.7% 4050.0 87.9% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1573.47 1550 101.5% 1782.5 88.3% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.18 345.57 320 108.0% 370.0 93.4% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 682.79 1177.49 950 123.9% 1286.0 91.6% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 79.27 95.94 94 102.1% 139.0 69.0% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CARLTON (40181) % Δ Volts 1.03 0.97 5.83% N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1622.33 1550 104.7% 1782.5 91.0% N-2: Malin-Round Mtn #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 91.85 165.78 150 110.5% 180.0 92.1% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1855.4 3801.86 2667.36 142.5% 4099.2 92.7% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1820.99 3691.81 2667.36 138.4% 4099.2 90.1% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPOLI11 Branch Amp 1820.99 3691.81 2667.36 138.4% 4099.2 90.1% N-2: Malin-Round Mtn #1 & #2 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 296.31 416.03 415.69 100.1% 483.5 86.1% Page 331 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1980.24 3222.95 2992.98 107.7% 4514.9 71.4% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1980.24 3222.95 2992.98 107.7% 4514.9 71.4% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1949.99 3189.36 2992.98 106.6% 4514.9 70.6% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1949.99 3189.36 2992.98 106.6% 4514.9 70.6% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1928.22 3151.51 2992.98 105.3% 4514.9 69.8% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) % Δ Volts 1.04 0.98 5.77% N-2: Malin-Round Mtn #1 & #2 500 kV MTSHASTA (44970) % Δ Volts 0.99 0.94 5.05% N-2: Malin-Round Mtn #1 & #2 500 kV WEED (45524) % Δ Volts 1.00 0.95 5.00% N-2: McNary-John Day & Rock Creek-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1590.49 1550 102.6% 1782.5 89.2% N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1591.85 1550 102.7% 1782.5 89.3% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1566.06 1550 101.0% 1782.5 87.9% N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1566.3 1550 101.1% 1782.5 87.9% N-2: Paul-Raver & Raver-Covingt4 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1552.53 1550 100.2% 1782.5 87.1% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.18 326.78 320 102.1% 370.0 88.3% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 682.79 1040.29 950 109.5% 1286.0 80.9% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1553.87 1550 100.2% 1782.5 87.2% N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 91.85 170.98 150 114.0% 180.0 95.0% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 691.14 896.89 830.88 107.9% 953.9 94.0% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1855.4 3515.22 2667.36 131.8% 3800.0 92.5% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1820.99 3419.85 2667.36 128.2% 4099.2 83.4% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPOLI11 Branch Amp 1820.99 3408.07 2667.36 127.8% 4099.2 83.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1980.24 3481.61 2992.98 116.3% 4514.9 77.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1980.24 3481.61 2992.98 116.3% 4514.9 77.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at MAXWELL Branch Amp 1949.99 3462.02 2992.98 115.7% 4514.9 76.7% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1949.99 3462.02 2992.98 115.7% 4514.9 76.7% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1928.22 3429.28 2992.98 114.6% 4514.9 76.0% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 285.71 921.33 825.86 111.6% 976.5 94.4% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 232.64 862.79 825.11 104.6% 975.0 88.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 391.77 468.23 462.88 101.2% 579.9 80.7% Page 332 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2004.23 2598.05 2477.87 104.9% 4000.0 65.0% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Townsend-Garrison #1 & #2 500 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1581.12 1550 102.0% 1782.5 88.7% N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1527.99 1581.12 1550 102.0% 1782.5 88.7% N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 333 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.75 -2840 0.77 -2770 0.93 -987 0.70 -2306 0.79 -3282 0.97 -2984 0.88 -4292 0.74 -394 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.75 -2775 0.77 -2713 0.93 -963 0.70 -2288 0.75 -3303 0.97 -3042 0.87 -4435 0.74 -390 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.74 -2895 0.77 -2823 0.93 -1020 0.70 -2312 0.80 -3408 0.97 -3156 0.87 -4551 0.74 -396 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.76 -2736 0.77 -2672 0.93 -960 0.70 -2272 0.86 -2535 0.97 -3004 0.87 -4500 0.74 -386 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.74 -2905 0.77 -2828 0.93 -981 0.70 -2321 0.82 -3366 0.97 -3029 0.83 -4109 0.74 -392 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.74 -2928 0.77 -2849 0.93 -1033 0.70 -2317 0.80 -3488 0.97 -3286 0.86 -4726 0.74 -399 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.75 -2898 0.77 -2806 0.95 -788 0.70 -2315 0.81 -3552 0.97 -3322 0.85 -4640 0.74 -374 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.76 -2459 0.78 -2414 0.93 -852 0.70 -2211 0.83 -2566 0.97 -2508 0.89 -3969 0.75 -365 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.76 -2759 0.77 -2694 0.93 -986 0.70 -2257 0.80 -2921 0.97 -3086 0.87 -4551 0.74 -390 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.77 -2506 0.78 -2454 0.93 -899 0.70 -2188 0.81 -2457 0.98 -2702 0.88 -4221 0.74 -373 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.74 -2939 0.77 -2862 0.93 -1025 0.70 -2324 0.81 -3484 0.97 -3229 0.84 -4302 0.74 -397 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.74 -2937 0.77 -2861 0.93 -1006 0.70 -2326 0.82 -3469 0.97 -3216 0.81 -4142 0.74 -395 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.75 -2928 0.77 -2835 0.96 -883 0.70 -2319 0.81 -3570 0.97 -3341 0.85 -4668 0.74 -386 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.77 -2803 0.79 -2728 0.94 -632 0.70 -2322 0.81 -3472 0.97 -3255 0.86 -4636 0.75 -371 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500 KV 0.78 -2844 0.79 -2766 0.95 -625 0.70 -2334 0.82 -3424 0.97 -3192 0.86 -4355 0.74 -394 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.76 -2640 0.78 -2586 0.93 -931 0.70 -2262 0.83 -2915 0.98 -2447 0.88 -4198 0.74 -381 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.76 -2642 0.78 -2589 0.94 -915 0.70 -2264 0.84 -2759 0.97 -2390 0.90 -3943 0.74 -378 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.79 -2688 0.81 -2636 0.94 -571 0.70 -2320 0.81 -3471 0.97 -3252 0.86 -4585 0.76 -352 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.75 -2860 0.76 -2787 0.93 -1009 0.70 -2308 0.83 -3105 0.97 -2712 0.88 -4245 0.74 -395 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.76 -2724 0.77 -2659 0.93 -978 0.70 -2245 0.81 -2880 0.97 -3061 0.87 -4526 0.74 -388 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.75 -2842 0.77 -2764 0.93 -939 0.70 -2306 0.83 -3268 0.97 -2793 0.86 -4196 0.74 -382 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.74 -2903 0.77 -2830 0.93 -1026 0.70 -2317 0.82 -3271 0.96 -2932 0.87 -4445 0.74 -398 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.74 -2952 0.77 -2874 0.93 -1046 0.70 -2327 0.82 -3432 0.96 -3192 0.86 -4639 0.74 -401 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.75 -2935 0.77 -2864 0.93 -1016 0.70 -2335 0.80 -3497 0.97 -3279 0.86 -4642 0.74 -395 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.75 -3034 0.77 -2956 0.93 -1016 0.70 -2365 0.80 -3619 0.97 -3250 0.86 -4407 0.73 -401 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.75 -2892 0.77 -2812 0.93 -940 0.70 -2318 0.82 -3404 0.97 -3107 0.86 -4262 0.74 -381 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.74 -2945 0.77 -2867 0.93 -1024 0.70 -2325 0.81 -3499 0.97 -3258 0.84 -4372 0.74 -397 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.74 -2961 0.77 -2878 0.93 -1005 0.70 -2328 0.81 -3551 0.97 -3315 0.86 -4578 0.74 -396 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.75 -2964 0.77 -2881 0.93 -1027 0.70 -2328 0.81 -3544 0.97 -3314 0.86 -4690 0.74 -399 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV + RAS 0.75 -3043 0.76 -2967 0.93 -1045 0.70 -2368 0.84 -3370 0.97 -3123 0.87 -4273 0.73 -410 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV + RAS 0.74 -3067 0.77 -2986 0.93 -1045 0.70 -2370 0.82 -3632 0.98 -3052 0.87 -4328 0.73 -410 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.74 -2932 0.77 -2854 0.93 -1031 0.70 -2323 0.82 -3363 0.98 -2968 0.87 -4529 0.74 -399 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.74 -2963 0.77 -2881 0.93 -1039 0.70 -2328 0.81 -3534 0.97 -3289 0.86 -4605 0.74 -400 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.74 -2962 0.77 -2879 0.93 -1023 0.70 -2328 0.81 -3546 0.97 -3300 0.87 -4432 0.74 -398 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.74 -2960 0.77 -2878 0.93 -1022 0.70 -2328 0.81 -3542 0.97 -3292 0.87 -4430 0.74 -398 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV + RAS 0.75 -2952 0.77 -2879 0.93 -1040 0.70 -2347 0.86 -2939 0.98 -2850 0.87 -4321 0.73 -411 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.74 -2914 0.77 -2838 0.93 -1033 0.70 -2320 0.82 -3354 0.97 -3104 0.87 -4549 0.74 -399 BF 4432 OSTRANDER-TROUTDALE & SPLIT OSTRANDER 500 KV 0.74 -2935 0.77 -2857 0.93 -1034 0.70 -2323 0.82 -3400 0.98 -2910 0.87 -4541 0.74 -399 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.74 -2956 0.77 -2877 0.93 -1043 0.70 -2328 0.81 -3465 0.98 -3059 0.86 -4663 0.74 -400 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.74 -2953 0.77 -2875 0.93 -1041 0.70 -2327 0.81 -3467 0.97 -3176 0.86 -4683 0.74 -400 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.74 -2940 0.77 -2861 0.93 -1034 0.70 -2324 0.82 -3404 0.98 -3013 0.87 -4569 0.74 -399 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.74 -2936 0.77 -2857 0.93 -1032 0.70 -2323 0.82 -3423 0.98 -2937 0.87 -4585 0.74 -399 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV + RAS 0.73 -3280 0.76 -3189 0.93 -1108 0.70 -2439 0.82 -4049 0.97 -3425 0.89 -3961 0.73 -431 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.75 -2880 0.77 -2810 0.93 -1016 0.70 -2316 0.84 -3064 0.97 -2964 0.87 -4419 0.74 -396 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV + RAS 0.73 -3316 0.76 -3223 0.92 -1227 0.70 -2439 0.79 -4126 0.97 -3515 0.86 -4642 0.73 -444 Page 334 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.75 -2875 0.77 -2797 0.93 -965 0.70 -2313 0.83 -3343 0.98 -2888 0.88 -4117 0.74 -388 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV + RAS 0.75 -3003 0.76 -2923 0.93 -1018 0.70 -2350 0.81 -3608 0.97 -3174 0.88 -4033 0.73 -402 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.74 -2942 0.77 -2864 0.93 -1023 0.70 -2325 0.81 -3475 0.97 -3227 0.86 -4608 0.74 -397 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.74 -3026 0.76 -2946 0.93 -1036 0.70 -2354 0.81 -3610 0.97 -3255 0.87 -4410 0.73 -405 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.74 -3045 0.76 -2962 0.93 -1048 0.70 -2356 0.80 -3680 0.97 -3341 0.87 -4488 0.73 -407 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.74 -2933 0.77 -2857 0.93 -1016 0.70 -2323 0.81 -3440 0.97 -3167 0.86 -4582 0.74 -396 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.75 -2976 0.76 -2893 0.93 -1048 0.70 -2330 0.81 -3565 0.97 -3349 0.85 -4812 0.74 -401 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.75 -2881 0.78 -2802 0.93 -940 0.70 -2322 0.82 -3453 0.98 -3052 0.86 -4286 0.74 -381 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.74 -2956 0.77 -2875 0.93 -1028 0.70 -2327 0.81 -3531 0.97 -3291 0.86 -4677 0.74 -398 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.74 -3191 0.76 -3093 0.94 -990 0.70 -2395 0.79 -3959 0.97 -3643 0.85 -4843 0.74 -422 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.74 -2942 0.77 -2865 0.93 -1018 0.70 -2326 0.82 -3471 0.97 -3198 0.87 -4169 0.74 -397 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.75 -2935 0.77 -2857 0.93 -1014 0.70 -2323 0.81 -3492 0.97 -3239 0.86 -4405 0.74 -395 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.74 -2927 0.77 -2851 0.93 -1012 0.70 -2322 0.82 -3413 0.97 -3135 0.86 -4517 0.74 -396 BF 4700 HATWAI 500KV & 230 KV + RAS 0.74 -3206 0.75 -3103 0.94 -991 0.70 -2398 0.80 -3900 0.97 -3577 0.85 -4802 0.74 -422 BF 4708 HATWAI 500 KV BUS 0.75 -2870 0.76 -2767 0.94 -800 0.70 -2308 0.81 -3536 0.97 -3302 0.86 -4520 0.75 -360 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.75 -2966 0.76 -2883 0.93 -1034 0.70 -2329 0.81 -3543 0.97 -3313 0.86 -4592 0.74 -399 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV 0.76 -2849 0.77 -2760 0.94 -839 0.70 -2307 0.81 -3596 0.97 -3361 0.86 -4420 0.75 -365 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.75 -2911 0.77 -2823 0.95 -909 0.70 -2318 0.81 -3559 0.97 -3323 0.85 -4624 0.74 -384 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.75 -2965 0.76 -2884 0.93 -1048 0.70 -2330 0.81 -3496 0.95 -3394 0.86 -4706 0.74 -401 BF 4888 ASHE-SLATT & CGS 500 KV 0.74 -3114 0.77 -3022 0.93 -1004 0.70 -2387 0.81 -3842 0.97 -3417 0.86 -4272 0.73 -404 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.75 -2871 0.77 -2791 0.93 -929 0.70 -2317 0.83 -3308 0.98 -2881 0.86 -3803 0.74 -380 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.75 -2902 0.77 -2821 0.93 -936 0.70 -2318 0.82 -3429 0.97 -3145 0.83 -4054 0.74 -381 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.76 -2794 0.77 -2725 0.93 -950 0.70 -2296 0.84 -3032 0.97 -2643 0.87 -3850 0.74 -385 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.76 -2102 0.79 -2124 0.93 -861 0.70 -2229 0.80 -2725 0.97 -2933 0.87 -4414 0.75 -370 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.76 -2144 0.79 -2169 0.93 -866 0.70 -2243 0.81 -2579 0.98 -2708 0.88 -4258 0.75 -370 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.74 -2909 0.77 -2833 0.93 -1024 0.70 -2319 0.75 -3256 0.97 -3289 0.86 -4746 0.74 -397 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.76 -2740 0.77 -2679 0.93 -960 0.70 -2285 0.84 -3086 0.97 -2712 0.88 -4207 0.74 -386 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.75 -2846 0.77 -2783 0.93 -1037 0.70 -2307 0.81 -3446 0.97 -3090 0.86 -4532 0.74 -400 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.76 -2709 0.77 -2645 0.93 -889 0.70 -2278 0.84 -2952 0.98 -2472 0.87 -3854 0.74 -372 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.75 -2828 0.77 -2755 0.93 -939 0.70 -2307 0.83 -3287 0.97 -2750 0.86 -4089 0.74 -382 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.75 -2862 0.76 -2793 0.93 -1024 0.70 -2306 0.82 -3398 0.97 -2894 0.86 -4478 0.74 -397 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.77 -2404 0.79 -2369 0.94 -804 0.70 -2241 0.84 -2588 0.98 -2396 0.90 -3947 0.75 -358 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.75 -2685 0.78 -2624 0.93 -931 0.70 -2272 0.82 -2944 0.97 -2700 0.88 -4275 0.74 -381 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.74 -2953 0.77 -2871 0.93 -1002 0.70 -2327 0.81 -3536 0.97 -3275 0.87 -4434 0.74 -395 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.74 -2949 0.77 -2871 0.93 -1019 0.70 -2327 0.81 -3506 0.97 -3242 0.87 -4426 0.74 -397 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.74 -2928 0.77 -2851 0.93 -991 0.70 -2322 0.82 -3478 0.97 -3197 0.87 -4235 0.74 -393 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.74 -2920 0.77 -2844 0.93 -973 0.70 -2322 0.82 -3454 0.97 -3148 0.85 -4228 0.74 -390 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.74 -2955 0.77 -2873 0.93 -1016 0.70 -2327 0.81 -3507 0.97 -3269 0.85 -4422 0.74 -397 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.75 -2915 0.77 -2845 0.93 -1008 0.70 -2328 0.81 -3428 0.97 -3146 0.86 -4565 0.74 -394 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.75 -2993 0.76 -2920 0.93 -1007 0.70 -2361 0.82 -3517 0.97 -3175 0.86 -4412 0.74 -399 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.75 -2881 0.78 -2802 0.93 -940 0.70 -2322 0.82 -3453 0.98 -3052 0.86 -4286 0.74 -381 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.75 -2964 0.77 -2883 0.93 -940 0.70 -2350 0.82 -3484 0.97 -3037 0.86 -4011 0.74 -387 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.75 -2830 0.77 -2754 0.93 -941 0.70 -2304 0.84 -3227 0.98 -2773 0.86 -4123 0.74 -383 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.75 -2837 0.77 -2758 0.93 -929 0.70 -2305 0.83 -3297 0.98 -2778 0.85 -4098 0.74 -381 BF 5266 SLATT-BUCKLY 500 KV 0.75 -2771 0.77 -2703 0.93 -974 0.70 -2282 0.84 -3125 0.97 -2759 0.88 -4268 0.74 -389 Page 335 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.74 -2960 0.77 -2877 0.93 -1019 0.70 -2328 0.81 -3532 0.97 -3293 0.84 -4515 0.74 -397 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.75 -2947 0.77 -2870 0.93 -1004 0.70 -2327 0.81 -3500 0.97 -3242 0.83 -4365 0.74 -395 BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.77 -1990 0.80 -2019 0.95 -594 0.70 -2309 0.84 -2438 0.98 -2432 0.90 -3952 0.77 -312 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.72 -2176 0.75 -2215 0.93 -949 0.70 -2271 0.81 -3237 0.97 -3265 0.86 -4731 0.74 -388 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.70 -2094 0.73 -2074 0.93 -842 0.70 -2293 0.81 -3382 0.97 -3388 0.85 -4830 0.74 -373 BF IPC POPULUS-CHILL-HEMINGWAY 500 KV & HEM 500/230 XFMR 0.70 -2276 0.71 -2256 0.93 -1084 0.70 -1784 0.84 -2179 0.97 -2514 0.89 -3962 0.74 -386 BF LOLO 230KV 0.74 -2916 0.75 -2830 0.93 -971 0.70 -2324 0.82 -3356 0.97 -3157 0.86 -4552 0.74 -386 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.81 -1940 0.83 -1960 0.94 -551 0.70 -2317 0.87 -2129 0.98 -2025 0.93 -3385 0.77 -296 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV+PTSN 0.79 -2019 0.82 -2045 0.95 -599 0.70 -2323 0.87 -2159 0.98 -2048 0.92 -3457 0.76 -311 BF PGE GRASSLAND-COYOTE SP 500KV & CARTY GAS PLANT 0.75 -2913 0.77 -2843 0.93 -1004 0.70 -2333 0.82 -3370 0.97 -3116 0.86 -4550 0.74 -394 BF PGE GRASSLAND-SLATT 500KV & BOARDMAN PLANT 0.74 -3001 0.76 -2923 0.93 -1015 0.70 -2360 0.81 -3588 0.97 -3227 0.86 -4458 0.73 -402 BUS: ALVEY 500 KV + RAS 0.75 -2981 0.76 -2907 0.93 -1071 0.70 -2347 0.87 -2706 0.97 -3275 0.87 -4768 0.74 -416 BUS: BELL BPA 500 KV 0.75 -3000 0.76 -2923 0.95 -964 0.70 -2342 0.81 -3480 0.97 -3258 0.86 -4439 0.74 -420 BUS: BUCKLEY 500 KV 0.75 -2675 0.78 -2615 0.93 -942 0.70 -2263 0.84 -2858 0.98 -2465 0.90 -3954 0.74 -383 BUS: DIXONVILLE 500 KV 0.75 -2695 0.78 -2634 0.93 -942 0.70 -2261 0.85 -2536 0.97 -2987 0.87 -4499 0.74 -383 BUS: HOT SPRINGS 500 KV 0.74 -2954 0.77 -2872 0.93 -981 0.70 -2327 0.81 -3539 0.97 -3310 0.86 -4708 0.74 -395 BUS: KEELER 500 KV + RAS 0.74 -3276 0.76 -3188 0.93 -1116 0.70 -2440 0.83 -3811 0.98 -3102 0.91 -3780 0.73 -432 BUS: ROCK CREEK 500 KV 0.75 -2833 0.77 -2755 0.93 -927 0.70 -2305 0.84 -3250 0.98 -2726 0.86 -4106 0.74 -381 BUS: SICKLER 500 KV 0.74 -2959 0.77 -2877 0.93 -1020 0.70 -2328 0.81 -3539 0.97 -3287 0.87 -4383 0.74 -398 BUS: SUMMER LAKE 500 KV 0.76 -2059 0.79 -2082 0.93 -840 0.70 -2215 0.82 -2541 0.97 -2670 0.88 -4202 0.75 -366 N-1: ALLSTON-KEELER 500 KV + RAS 0.73 -3293 0.76 -3200 0.93 -1118 0.70 -2441 0.81 -4096 0.97 -3482 0.89 -4028 0.73 -432 N-1: ALLSTON-NAPAVINE 500 KV 0.74 -2928 0.77 -2852 0.93 -1013 0.70 -2322 0.82 -3415 0.97 -3139 0.86 -4517 0.74 -396 N-1: ALLSTON-PAUL #2 500 KV 0.74 -2927 0.77 -2851 0.93 -1012 0.70 -2322 0.82 -3414 0.97 -3139 0.86 -4526 0.74 -396 N-1: ALVERY-DIXONVILLE 500 KV 0.75 -2687 0.78 -2625 0.93 -942 0.70 -2260 0.87 -2399 0.97 -2946 0.87 -4467 0.74 -383 N-1: ALVEY-MARION 500 KV 0.76 -2734 0.77 -2670 0.93 -959 0.70 -2275 0.85 -2632 0.98 -2801 0.87 -4338 0.74 -386 N-1: ASHE-HANFORD 500 KV 0.75 -2953 0.77 -2875 0.93 -1019 0.70 -2329 0.81 -3494 0.97 -3275 0.82 -4292 0.74 -397 N-1: ASHE-LOW MON 500 KV 0.74 -2946 0.77 -2866 0.93 -1024 0.70 -2325 0.81 -3503 0.97 -3258 0.86 -4454 0.74 -397 N-1: ASHE-MARION 500 KV 0.75 -2815 0.77 -2741 0.93 -963 0.70 -2299 0.84 -3083 0.97 -2697 0.88 -4142 0.74 -387 N-1: ASHE-SLATT 500 KV 0.75 -2881 0.77 -2802 0.93 -937 0.70 -2319 0.83 -3329 0.97 -3005 0.86 -4177 0.74 -381 N-1: BELL-COULEE 500 KV 0.75 -2967 0.76 -2883 0.94 -956 0.70 -2331 0.81 -3515 0.97 -3281 0.86 -4587 0.73 -403 N-1: BELL-TAFT 500 KV 0.75 -3007 0.76 -2928 0.95 -980 0.70 -2343 0.81 -3483 0.97 -3263 0.86 -4534 0.74 -421 N-1: BIG EDDY-CELILO 500 KV 0.75 -2966 0.76 -2883 0.93 -1041 0.70 -2328 0.81 -3540 0.97 -3312 0.85 -4762 0.74 -400 N-1: BIG EDDY-JOHN DAY 500 KV 0.75 -2962 0.76 -2883 0.93 -1045 0.70 -2329 0.81 -3505 0.96 -3329 0.86 -4728 0.74 -401 N-1: BIG EDDY-KNIGHT 500 KV 0.74 -2921 0.77 -2845 0.93 -1006 0.70 -2320 0.82 -3438 0.98 -2950 0.85 -4562 0.74 -394 N-1: BIG EDDY-OSTRANDER 500 KV 0.74 -2954 0.77 -2876 0.93 -1041 0.70 -2327 0.81 -3480 0.97 -3184 0.86 -4699 0.74 -400 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.75 -2857 0.77 -2783 0.93 -1024 0.70 -2323 0.81 -3504 0.97 -3280 0.86 -4722 0.74 -397 N-1: BRADY-ANTELOPE 230 KV 0.74 -2948 0.77 -2864 0.93 -1016 0.70 -2327 0.81 -3538 0.97 -3312 0.85 -4757 0.74 -399 N-1: BROADVIEW-GARRISON #1 500 KV 0.75 -2998 0.76 -2916 0.93 -1140 0.70 -2333 0.81 -3568 0.97 -3346 0.85 -4834 0.74 -413 N-1: BROWNLEE-ONTARIO 230 KV 0.76 -2769 0.77 -2709 0.93 -1015 0.70 -2320 0.81 -3470 0.97 -3256 0.86 -4693 0.74 -396 N-1: BUCKLEY-GRIZZLY 500 KV 0.75 -2787 0.77 -2718 0.93 -971 0.70 -2287 0.81 -3186 0.98 -2845 0.87 -4433 0.74 -388 N-1: BUCKLEY-MARION 500 KV 0.74 -2923 0.77 -2848 0.93 -1036 0.70 -2320 0.82 -3387 0.97 -3142 0.86 -4580 0.74 -399 N-1: BUCKLEY-SLATT 500 KV 0.75 -2771 0.77 -2703 0.93 -974 0.70 -2282 0.84 -3125 0.97 -2759 0.88 -4268 0.74 -389 N-1: CAPTAIN JACK-OLINDA 500 KV 0.77 -2512 0.78 -2457 0.94 -909 0.70 -2166 0.82 -2392 0.98 -2787 0.88 -4308 0.74 -374 N-1: CAPTJACK-KFALLS 500 KV 0.76 -2743 0.77 -2681 0.93 -968 0.70 -2273 0.75 -3303 0.97 -3114 0.86 -4679 0.74 -387 N-1: CASCADE CROSSING 500 KV 0.75 -2861 0.76 -2789 0.93 -1027 0.70 -2303 0.83 -3176 0.98 -2849 0.88 -4333 0.74 -398 Page 336 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: CEDAR HILL-ROBINSON 500 KV (SWIP) 0.76 -2686 0.78 -2577 0.93 -1141 0.70 -1784 0.84 -2371 0.97 -2641 0.89 -4116 0.73 -406 N-1: CHIEF JO-COULEE 500 KV 0.75 -2969 0.76 -2886 0.93 -1042 0.70 -2329 0.81 -3542 0.97 -3316 0.86 -4650 0.74 -401 N-1: CHIEF JO-MONROE 500 KV 0.74 -2958 0.77 -2876 0.93 -1032 0.70 -2327 0.81 -3528 0.97 -3279 0.86 -4533 0.74 -399 N-1: CHIEF JO-SICKLER 500 KV 0.74 -2957 0.77 -2875 0.93 -1021 0.70 -2327 0.81 -3537 0.97 -3301 0.86 -4566 0.74 -397 N-1: COULEE-HANFORD 500 KV 0.75 -2928 0.77 -2847 0.93 -944 0.70 -2323 0.81 -3507 0.97 -3243 0.85 -4180 0.74 -386 N-1: COULEE-SCHULTZ 500 KV 0.75 -2938 0.77 -2859 0.93 -996 0.70 -2324 0.81 -3510 0.97 -3259 0.86 -4409 0.74 -393 N-1: COVINGTON4-RAVER 500 KV 0.75 -2968 0.76 -2885 0.93 -1043 0.70 -2329 0.81 -3546 0.97 -3320 0.85 -4738 0.74 -400 N-1: COVINGTON5-RAVER 500 KV 0.75 -2968 0.76 -2885 0.93 -1043 0.70 -2329 0.81 -3545 0.97 -3320 0.85 -4736 0.74 -400 N-1: COYOTE-LONGHORN 500 KV 0.75 -2949 0.77 -2874 0.93 -1019 0.70 -2334 0.81 -3476 0.97 -3239 0.86 -4680 0.74 -396 N-1: CUSTERW-MONROE 500 KV 0.74 -2961 0.77 -2878 0.93 -1008 0.70 -2329 0.81 -3549 0.97 -3315 0.86 -4589 0.74 -397 N-1: DIXONVILLE-MERIDIAN 500 KV 0.76 -2739 0.77 -2674 0.93 -959 0.70 -2272 0.84 -2728 0.97 -3028 0.87 -4520 0.74 -386 N-1: DRYCREEK-LOLO 230 KV 0.75 -2966 0.76 -2883 0.93 -1040 0.70 -2328 0.81 -3541 0.97 -3315 0.85 -4764 0.74 -400 N-1: DRYCREEK-N LEWISTON 230 KV 0.75 -2966 0.76 -2883 0.93 -1039 0.70 -2328 0.81 -3539 0.97 -3312 0.85 -4758 0.74 -399 N-1: DRYCREEK-WALA AVA 230 KV 0.75 -2965 0.76 -2882 0.93 -1037 0.70 -2328 0.81 -3540 0.97 -3312 0.85 -4755 0.74 -399 N-1: DWORSHAK-HATWAI 500 KV + RAS 0.76 -2855 0.76 -2756 0.94 -793 0.70 -2305 0.81 -3566 0.97 -3331 0.86 -4515 0.75 -358 N-1: DWORSHAK-TAFT 500 KV 0.75 -2898 0.77 -2806 0.95 -788 0.70 -2315 0.81 -3552 0.97 -3322 0.85 -4640 0.74 -374 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.75 -2968 0.76 -2885 0.93 -1043 0.70 -2329 0.81 -3538 0.97 -3302 0.86 -4641 0.74 -400 N-1: ECHO LAKE-RAVER 500 KV 0.74 -2960 0.77 -2878 0.93 -1030 0.70 -2327 0.81 -3539 0.97 -3298 0.86 -4669 0.74 -399 N-1: ECHO LAKE-SCHULTZ 500 KV 0.74 -2960 0.77 -2878 0.93 -1037 0.70 -2328 0.81 -3510 0.97 -3273 0.86 -4580 0.74 -400 N-1: ECHO LAKE-SNOK TAP 500 KV 0.74 -2954 0.77 -2872 0.93 -1004 0.70 -2327 0.81 -3540 0.97 -3287 0.86 -4470 0.74 -396 N-1: GARRISON-TAFT #2 500 KV 0.77 -2803 0.79 -2728 0.94 -632 0.70 -2322 0.81 -3472 0.97 -3255 0.86 -4636 0.75 -371 N-1: GOLDHILL-PLACER 115 KV 0.75 -2977 0.76 -2894 0.93 -1047 0.70 -2331 0.81 -3579 0.97 -3344 0.85 -4808 0.74 -400 N-1: GRASSLAND-COYOTE 500 KV 0.75 -2913 0.77 -2843 0.93 -1004 0.70 -2333 0.82 -3370 0.97 -3116 0.86 -4550 0.74 -394 N-1: GRASSLAND-SLATT 500 KV 0.75 -2933 0.77 -2858 0.93 -1037 0.70 -2328 0.81 -3520 0.97 -3260 0.86 -4724 0.74 -399 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.76 -2709 0.77 -2645 0.93 -937 0.70 -2276 0.82 -2971 0.98 -2739 0.88 -4328 0.74 -382 N-1: GRIZZLY-MALIN 500 KV 0.76 -2633 0.77 -2574 0.93 -932 0.70 -2239 0.81 -2811 0.97 -2738 0.88 -4256 0.74 -381 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.76 -2576 0.78 -2529 0.93 -871 0.70 -2279 0.82 -2898 0.98 -2779 0.88 -4322 0.75 -369 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.76 -2619 0.77 -2561 0.93 -929 0.70 -2235 0.82 -2772 0.97 -2716 0.88 -4233 0.74 -380 N-1: GRIZZLY-ROUND BU 500 KV 0.74 -2956 0.77 -2875 0.93 -1040 0.70 -2327 0.81 -3525 0.97 -3269 0.86 -4733 0.74 -400 N-1: HANFORD-LOW MON 500 KV 0.74 -2955 0.77 -2874 0.93 -1034 0.70 -2327 0.81 -3521 0.97 -3275 0.84 -4420 0.74 -399 N-1: HANFORD-VANTAGE 500 KV 0.75 -2947 0.77 -2870 0.93 -1004 0.70 -2327 0.81 -3500 0.97 -3242 0.83 -4366 0.74 -395 N-1: HANFORD-WAUTOMA 500 KV 0.74 -2954 0.77 -2873 0.93 -1033 0.70 -2326 0.82 -3513 0.97 -3271 0.85 -4663 0.74 -398 N-1: HATWAI 500/230 KV XFMR + RAS 0.74 -2968 0.76 -2885 0.93 -1029 0.70 -2329 0.82 -3481 0.97 -3267 0.86 -4697 0.74 -396 N-1: HATWAI-LOLO 230 KV 0.74 -2963 0.76 -2881 0.93 -1031 0.70 -2328 0.81 -3524 0.97 -3296 0.86 -4723 0.74 -398 N-1: HATWAI-LOW GRAN 500 KV 0.75 -2914 0.77 -2825 0.95 -910 0.70 -2318 0.81 -3567 0.97 -3337 0.85 -4654 0.74 -384 N-1: HATWAI-N LEWISTON 230 KV 0.75 -2966 0.76 -2883 0.93 -1039 0.70 -2328 0.81 -3539 0.97 -3312 0.85 -4757 0.74 -400 N-1: HELLS CANYON-BROWNLEE 230 KV 0.75 -2835 0.76 -2769 0.93 -953 0.70 -2330 0.83 -3299 0.97 -3096 0.87 -4481 0.74 -386 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.74 -2947 0.76 -2867 0.93 -1011 0.70 -2326 0.82 -3423 0.97 -3218 0.86 -4640 0.74 -395 N-1: HEMINGWAY-GRASSLAND 500 KV 0.79 -1973 0.81 -2000 0.95 -598 0.70 -2299 0.85 -2407 0.98 -2400 0.90 -3882 0.76 -310 N-1: HEMINGWAY-GRASSLAND 500 KV + FACRI 0.74 -2572 0.77 -2555 0.93 -871 0.70 -2394 0.83 -4094 0.97 -3723 0.84 -4962 0.74 -374 N-1: HEMINGWAY-GRASSLAND 500 KV + PTSN SHUNT 0.78 -2128 0.80 -2152 0.95 -649 0.70 -2338 0.84 -2496 0.97 -2525 0.89 -3989 0.75 -325 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.75 -2275 0.78 -2300 0.93 -943 0.70 -2296 0.81 -3229 0.97 -3253 0.86 -4725 0.74 -386 N-1: HILL TOP 345/230 XFMR 0.74 -2936 0.77 -2857 0.93 -1039 0.70 -2321 0.81 -3422 0.97 -3298 0.86 -4743 0.74 -400 N-1: HORSE HV-MCNARY 230 KV 0.74 -2954 0.77 -2873 0.93 -1039 0.70 -2326 0.81 -3525 0.97 -3284 0.86 -4708 0.74 -400 N-1: HOT SPRINGS-TAFT 500 KV 0.74 -2954 0.77 -2872 0.93 -981 0.70 -2327 0.81 -3540 0.97 -3310 0.86 -4708 0.74 -395 Page 337 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: HUMBOLDT-COYOTE CK 345 KV 0.76 -2744 0.77 -2650 0.93 -1027 0.70 -2236 0.82 -3404 0.97 -3232 0.86 -4683 0.74 -398 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.75 -2997 0.76 -2916 0.93 -1056 0.70 -2326 0.81 -3559 0.97 -3340 0.85 -4812 0.73 -403 N-1: ING500-CUSTERW 500 KV 0.75 -2964 0.77 -2881 0.93 -1029 0.70 -2328 0.81 -3545 0.97 -3315 0.86 -4697 0.74 -399 N-1: JOHN DAY-MARION 500 KV 0.74 -2918 0.77 -2844 0.93 -1029 0.70 -2319 0.82 -3343 0.97 -3064 0.87 -4551 0.74 -398 N-1: JOHN DAY-ROCK CK 500 KV 0.75 -2843 0.77 -2764 0.93 -936 0.70 -2306 0.83 -3304 0.97 -2863 0.86 -4233 0.74 -382 N-1: JOHN DAY-SLATT 500 KV 0.75 -2887 0.77 -2814 0.93 -1030 0.70 -2309 0.82 -3461 0.97 -2950 0.86 -4568 0.74 -398 N-1: KFALLS-MERIDIAN 500 KV 0.75 -2913 0.77 -2837 0.93 -1025 0.70 -2315 0.78 -3548 0.97 -3208 0.86 -4613 0.74 -397 N-1: KNIGHT-WAUTOMA 500 KV 0.75 -2837 0.77 -2760 0.93 -945 0.70 -2305 0.84 -3240 0.98 -2794 0.86 -4185 0.74 -384 N-1: LAGRANDE-NORTH POWDER 230 KV 0.75 -2942 0.76 -2864 0.93 -1021 0.70 -2328 0.81 -3463 0.97 -3264 0.86 -4720 0.74 -397 N-1: LANES-MARION 500 KV 0.74 -2920 0.77 -2846 0.93 -1028 0.70 -2320 0.83 -3307 0.97 -3151 0.86 -4590 0.74 -398 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.75 -2963 0.77 -2881 0.93 -1037 0.70 -2328 0.81 -3539 0.97 -3308 0.85 -4743 0.74 -399 N-1: LIT GOOSE-LOW MON 500 KV 0.74 -2959 0.77 -2877 0.93 -1032 0.70 -2327 0.81 -3535 0.97 -3298 0.86 -4693 0.74 -398 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.74 -2960 0.77 -2877 0.93 -1029 0.70 -2327 0.81 -3539 0.97 -3307 0.85 -4725 0.74 -398 N-1: LOW MON-SAC TAP 500 KV 0.75 -2918 0.77 -2839 0.93 -957 0.70 -2322 0.81 -3479 0.97 -3214 0.85 -4365 0.74 -384 N-1: MALIN 500/230 XFMR 0.74 -2934 0.77 -2854 0.93 -1034 0.70 -2318 0.81 -3510 0.97 -3294 0.86 -4731 0.74 -399 N-1: MALIN-HILLTOP 230 KV 0.74 -2914 0.77 -2835 0.93 -1031 0.70 -2312 0.81 -3463 0.97 -3296 0.86 -4738 0.74 -398 N-1: MALIN-ROUND MTN #1 500 KV 0.76 -2764 0.77 -2699 0.93 -988 0.70 -2258 0.82 -2923 0.97 -3094 0.87 -4557 0.74 -390 N-1: MALIN-ROUND MTN #2 500 KV 0.76 -2755 0.77 -2690 0.93 -985 0.70 -2255 0.81 -2899 0.97 -3082 0.87 -4550 0.74 -390 N-1: MALIN-SUMMER LAKE 500 KV 0.75 -2738 0.77 -2678 0.93 -1034 0.70 -2239 0.80 -3008 0.97 -3051 0.87 -4516 0.74 -398 N-1: MAPLE VLY-ROCKY RH 345 KV 0.75 -2964 0.77 -2882 0.93 -1039 0.70 -2328 0.81 -3537 0.97 -3299 0.86 -4629 0.74 -400 N-1: MARION-PEARL 500 KV 0.74 -2902 0.77 -2833 0.93 -1025 0.70 -2320 0.83 -3140 0.97 -3103 0.86 -4624 0.74 -397 N-1: MARION-SANTIAM 500 KV 0.75 -2987 0.76 -2903 0.93 -1047 0.70 -2334 0.80 -3620 0.97 -3402 0.85 -4848 0.74 -401 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.75 -2967 0.76 -2884 0.93 -1042 0.70 -2329 0.81 -3530 0.97 -3315 0.86 -4743 0.74 -400 N-1: MCNARY 500/230 KV XFMR 0.75 -2969 0.77 -2885 0.93 -1047 0.70 -2333 0.80 -3580 0.97 -3367 0.85 -4766 0.74 -401 N-1: MCNARY S2-MCNARY S3 230 KV 0.75 -2967 0.76 -2884 0.93 -1043 0.70 -2328 0.81 -3543 0.97 -3314 0.85 -4738 0.74 -400 N-1: MCNARY-BOARD T1 230 KV 0.74 -2943 0.77 -2863 0.93 -1037 0.70 -2321 0.81 -3502 0.97 -3288 0.86 -4759 0.74 -398 N-1: MCNARY-JOHN DAY 500 KV 0.75 -2876 0.77 -2800 0.93 -1012 0.70 -2310 0.83 -3354 0.97 -2935 0.87 -4449 0.74 -395 N-1: MCNARY-LONGHORN 500 KV 0.75 -2940 0.77 -2866 0.93 -1008 0.70 -2333 0.81 -3470 0.97 -3225 0.86 -4632 0.74 -394 N-1: MCNARY-ROSS 345 KV 0.74 -2944 0.77 -2868 0.93 -1040 0.70 -2325 0.81 -3477 0.97 -3231 0.86 -4665 0.74 -400 N-1: MCNARY-ROUNDUP 230 KV 0.75 -2891 0.77 -2822 0.93 -999 0.70 -2327 0.82 -3404 0.97 -3203 0.86 -4668 0.74 -393 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.75 -2902 0.77 -2823 0.93 -951 0.70 -2319 0.82 -3416 0.97 -3129 0.85 -4334 0.74 -383 N-1: MIDPOINT-HEMINGWAY 500 KV 0.70 -2416 0.72 -2111 0.93 -872 0.70 -2299 0.81 -3419 0.97 -3348 0.85 -4805 0.74 -377 N-1: MIDPOINT-HUMBOLDT 345 KV 0.75 -2850 0.77 -2758 0.93 -1046 0.70 -2233 0.81 -3441 0.97 -3268 0.86 -4713 0.74 -400 N-1: MIDPOINT-TOWNSEND 500 KV (MSTI) 0.79 -2416 0.80 -2404 0.99 -770 0.70 -2366 0.88 -2364 0.97 -2108 0.91 -3062 0.77 -230 N-1: MIDPOINT-TOWNSEND 500 KV (MSTI)+PTSN SHUNT 0.79 -2437 0.79 -2424 0.99 -792 0.70 -2369 0.87 -2379 0.98 -2126 0.91 -3090 0.77 -234 N-1: NAPAVINE-PAUL 500 KV 0.74 -2945 0.77 -2867 0.93 -1025 0.70 -2325 0.81 -3491 0.97 -3245 0.86 -4666 0.74 -398 N-1: OLYMPIA-PAUL 500 KV 0.75 -2973 0.76 -2890 0.93 -1045 0.70 -2330 0.81 -3560 0.97 -3339 0.85 -4811 0.74 -401 N-1: ONTARIO-CALDWELL 230 KV 0.75 -2859 0.77 -2781 0.93 -1026 0.70 -2321 0.81 -3505 0.97 -3283 0.86 -4724 0.74 -398 N-1: OSTRANDER-KNIGHT 500 KV 0.74 -2938 0.77 -2861 0.93 -1033 0.70 -2323 0.82 -3417 0.97 -3138 0.86 -4600 0.74 -399 N-1: OSTRANDER-PEARL 500 KV 0.74 -2960 0.77 -2881 0.93 -1041 0.70 -2328 0.80 -3533 0.97 -3221 0.86 -4749 0.74 -400 N-1: OSTRANDER-TROUTDALE 500 KV 0.75 -2970 0.76 -2887 0.93 -1044 0.70 -2330 0.81 -3530 0.97 -3307 0.86 -4729 0.74 -400 N-1: OXBOW-BROWNLEE #2 230 KV 0.74 -2956 0.77 -2876 0.93 -1038 0.70 -2328 0.81 -3536 0.97 -3309 0.85 -4758 0.74 -399 N-1: OXBOW-LOLO 230 KV 0.74 -2911 0.75 -2828 0.93 -972 0.70 -2324 0.82 -3356 0.97 -3158 0.86 -4559 0.74 -386 N-1: PAUL-SATSOP 500 KV 0.74 -2964 0.77 -2881 0.93 -1039 0.70 -2328 0.81 -3527 0.97 -3298 0.86 -4707 0.74 -400 N-1: PEARL-KEELER 500 KV 0.74 -2912 0.77 -2839 0.93 -1004 0.70 -2321 0.83 -3325 0.97 -3041 0.87 -4461 0.74 -394 Page 338 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: PEARL-KEELER 500 KV + RAS 0.74 -3079 0.77 -2994 0.93 -1049 0.70 -2371 0.82 -3651 0.97 -3233 0.87 -4363 0.73 -411 N-1: PINTO-FOUR CORNER 345 KV 0.75 -2965 0.77 -2882 0.93 -1041 0.70 -2324 0.81 -3537 0.97 -3316 0.85 -4766 0.74 -400 N-1: PONDEROSA A 500/230 KV XFMR 0.75 -2966 0.76 -2884 0.93 -1042 0.70 -2328 0.81 -3537 0.97 -3314 0.85 -4764 0.74 -400 N-1: PONDEROSA B 500/230 KV XFMR 0.75 -2965 0.76 -2883 0.93 -1041 0.70 -2329 0.81 -3541 0.97 -3316 0.85 -4766 0.74 -400 N-1: RAVER-PAUL 500 KV 0.75 -2882 0.77 -2804 0.93 -970 0.70 -2314 0.82 -3386 0.98 -2911 0.87 -4158 0.74 -389 N-1: RAVER-TACOMA 500 KV 0.75 -2965 0.76 -2883 0.93 -1040 0.70 -2328 0.81 -3539 0.97 -3303 0.86 -4671 0.74 -400 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.75 -2965 0.77 -2882 0.93 -1041 0.70 -2318 0.81 -3534 0.97 -3315 0.85 -4765 0.74 -400 N-1: ROBINSON-HARRY ALLEN 500 KV 0.76 -2929 0.77 -2839 0.93 -1138 0.70 -1283 0.83 -2528 0.97 -2739 0.88 -4236 0.73 -409 N-1: ROCK CK-WAUTOMA 500 KV 0.75 -2844 0.77 -2764 0.93 -932 0.70 -2307 0.83 -3310 0.98 -2798 0.86 -4152 0.74 -381 N-1: ROUND MTN-TABLE MTN 500 KV 0.75 -2838 0.76 -2765 0.93 -1004 0.70 -2281 0.81 -3178 0.97 -3196 0.86 -4652 0.74 -393 N-1: ROUNDUP-LAGRANDE 230 KV 0.75 -2931 0.76 -2853 0.93 -1010 0.70 -2328 0.82 -3430 0.97 -3227 0.86 -4688 0.74 -395 N-1: SCHULTZ-SICKLER 500 KV 0.74 -2959 0.77 -2877 0.93 -1021 0.70 -2328 0.81 -3541 0.97 -3291 0.86 -4496 0.74 -398 N-1: SCHULTZ-VANTAGE 500 KV 0.74 -2961 0.77 -2878 0.93 -1021 0.70 -2328 0.81 -3534 0.97 -3298 0.85 -4521 0.74 -397 N-1: SCHULTZ-WAUTOMA 500 KV 0.75 -2927 0.77 -2849 0.93 -978 0.70 -2323 0.82 -3464 0.97 -3172 0.85 -4309 0.74 -391 N-1: SIGURD-GLEN CANYON 230 KV 0.75 -2966 0.76 -2883 0.93 -1041 0.70 -2327 0.81 -3540 0.97 -3316 0.85 -4766 0.74 -400 N-1: SLATT 500/230 KV XFMR 0.74 -3065 0.76 -2981 0.93 -1034 0.70 -2367 0.81 -3698 0.97 -3331 0.86 -4460 0.73 -406 N-1: SLATT-LONGHORN 500 KV 0.75 -2932 0.77 -2857 0.93 -1034 0.70 -2322 0.81 -3468 0.97 -3203 0.86 -4651 0.74 -399 N-1: SNOK TAP-SNOKING 500 KV 0.75 -2968 0.76 -2885 0.93 -1041 0.70 -2329 0.81 -3545 0.97 -3316 0.85 -4715 0.74 -400 N-1: TABLE MTN-TESLA 500 KV 0.75 -2843 0.76 -2768 0.93 -1002 0.70 -2277 0.81 -3239 0.97 -3229 0.86 -4672 0.74 -393 N-1: TABLE MTN-VACA DIXON 500 KV 0.76 -2771 0.77 -2703 0.93 -982 0.70 -2251 0.82 -3013 0.97 -3156 0.86 -4612 0.74 -389 N-1: VANTAGE 500/230 KV XFMR #1 0.75 -2966 0.76 -2883 0.93 -1041 0.70 -2329 0.81 -3541 0.97 -3311 0.85 -4790 0.74 -400 N-1: VANTAGE 500/230 KV XFMR #2 0.75 -2966 0.76 -2883 0.93 -1041 0.70 -2329 0.81 -3541 0.97 -3311 0.85 -4789 0.74 -400 N-1: WALLA WALLA-TALBOT 230 KV 0.74 -2958 0.77 -2875 0.93 -1024 0.70 -2327 0.81 -3534 0.97 -3302 0.86 -4710 0.74 -397 N-1: WALLA WALLA-WALLULA 230 KV 0.74 -2966 0.76 -2883 0.93 -1038 0.70 -2329 0.81 -3533 0.97 -3310 0.85 -4753 0.74 -400 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.76 -2664 0.78 -2605 0.94 -807 0.70 -2283 0.87 -2750 0.99 -2169 0.88 -3453 0.75 -358 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.76 -2756 0.77 -2690 0.93 -954 0.70 -2287 0.85 -2855 0.98 -2420 0.88 -3877 0.74 -386 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.77 -2537 0.78 -2493 0.93 -868 0.70 -2240 0.88 -2500 0.98 -2000 0.91 -3376 0.75 -369 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.76 -2772 0.77 -2708 0.93 -953 0.70 -2292 0.84 -2991 0.98 -2494 0.87 -3996 0.74 -385 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.75 -2710 0.77 -2653 0.93 -946 0.70 -2276 0.85 -2947 0.97 -2394 0.88 -3888 0.74 -384 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.76 -2783 0.77 -2712 0.93 -903 0.70 -2299 0.85 -3128 0.98 -2571 0.86 -3907 0.74 -375 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.75 -2830 0.77 -2754 0.94 -916 0.70 -2309 0.84 -3218 0.98 -2775 0.86 -4050 0.74 -378 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.75 -3109 0.76 -3006 0.98 -817 0.70 -2378 0.81 -3623 0.97 -3352 0.86 -4440 0.73 -441 N-2: BETHEL-CEDAR SP 500KV & BETHEL-ROUND BUTTE 230 KV 0.74 -2900 0.77 -2826 0.93 -1040 0.70 -2311 0.82 -3350 0.97 -3077 0.87 -4524 0.74 -400 N-2: BETHEL-CEDAR SP 500KV & BETHEL-SANTIAM 230KV 0.74 -2896 0.77 -2825 0.93 -1037 0.70 -2310 0.82 -3352 0.97 -3082 0.87 -4532 0.74 -400 N-2: BETHEL-CEDAR SP 500KV & SANTIAM-MIKKALO 500KV 0.75 -2868 0.76 -2796 0.93 -1029 0.70 -2304 0.83 -3191 0.98 -2868 0.88 -4354 0.74 -398 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.74 -2947 0.77 -2870 0.93 -1039 0.70 -2326 0.82 -3444 0.98 -3021 0.86 -4668 0.74 -400 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.74 -2953 0.77 -2875 0.93 -1042 0.70 -2326 0.81 -3471 0.98 -3054 0.86 -4691 0.74 -400 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.78 -2527 0.79 -2483 0.93 -972 0.70 -2308 0.82 -3339 0.97 -3157 0.86 -4613 0.74 -388 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.78 -2520 0.79 -2477 0.93 -971 0.70 -2308 0.81 -3335 0.97 -3154 0.86 -4610 0.74 -387 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.76 -2636 0.78 -2537 0.92 -1035 0.70 -2279 0.81 -3445 0.97 -3245 0.86 -4670 0.74 -421 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.79 -2259 0.81 -2127 0.93 -1002 0.70 -2237 0.82 -3398 0.97 -3208 0.86 -4627 0.74 -422 N-2: BROADVIEW-TOWNSEND #1 & #2 500 KV + RAS 0.73 -3298 0.75 -3221 0.88 -1335 0.70 -2429 0.80 -3872 0.97 -3559 0.85 -4869 0.72 -490 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.76 -2637 0.77 -2580 0.93 -836 0.70 -2316 0.84 -2963 0.98 -2759 0.88 -4115 0.75 -362 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.76 -2824 0.76 -2763 0.93 -951 0.70 -2329 0.82 -3292 0.97 -3089 0.87 -4475 0.74 -386 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.75 -2871 0.76 -2799 0.93 -1023 0.70 -2309 0.83 -3147 0.98 -2790 0.88 -4316 0.74 -398 Page 339 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.75 -2941 0.77 -2863 0.93 -1004 0.70 -2325 0.81 -3506 0.97 -3252 0.87 -4269 0.74 -395 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.74 -2950 0.77 -2872 0.92 -1027 0.70 -2326 0.81 -3506 0.97 -3260 0.86 -4411 0.74 -398 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.74 -2958 0.77 -2876 0.93 -1030 0.70 -2327 0.81 -3529 0.97 -3277 0.86 -4494 0.74 -399 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.74 -2953 0.77 -2871 0.93 -1015 0.70 -2326 0.81 -3532 0.97 -3286 0.86 -4459 0.74 -396 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.75 -2967 0.76 -2884 0.93 -1039 0.70 -2329 0.81 -3539 0.97 -3306 0.86 -4564 0.74 -400 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.76 -2880 0.78 -2798 0.94 -838 0.70 -2319 0.81 -3466 0.98 -3055 0.84 -3620 0.74 -371 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.75 -2866 0.76 -2787 0.93 -885 0.70 -2313 0.82 -3433 0.97 -3104 0.88 -3678 0.74 -376 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.74 -2958 0.77 -2875 0.93 -994 0.70 -2328 0.81 -3551 0.97 -3311 0.87 -4520 0.74 -395 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.73 -3305 0.76 -3209 0.92 -1184 0.70 -2431 0.78 -4236 0.97 -3854 0.84 -5185 0.73 -437 N-2: DC-BIPOLE 0.78 -2127 0.78 -2055 0.94 -836 0.70 -1854 0.84 -2487 0.95 -3170 0.88 -4343 0.74 -372 N-2: DOUBLE PALO VERDE 0.86 -1436 0.86 -1440 0.96 -390 0.70 -1741 0.94 -1947 0.99 -1109 0.96 -1651 0.78 -243 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.75 -2968 0.76 -2885 0.93 -1043 0.70 -2329 0.81 -3538 0.97 -3302 0.86 -4640 0.74 -400 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.75 -2965 0.77 -2882 0.93 -1040 0.70 -2329 0.81 -3533 0.97 -3279 0.86 -4503 0.74 -400 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.83 -2687 0.85 -2592 0.93 -431 0.70 -2417 0.82 -3403 0.97 -3122 0.87 -4242 0.77 -391 N-2: GRASSLAND-CEDAR SP 500KV & SLATT-BUCKLEY 500KV 0.76 -2636 0.77 -2578 0.93 -952 0.70 -2247 0.86 -2762 0.98 -2356 0.91 -3759 0.74 -385 N-2: GRASSLAND-COYOTE 500KV & SLATT-LONGHORN 500KV 0.76 -2780 0.78 -2726 0.93 -923 0.70 -2326 0.85 -2989 0.97 -2543 0.89 -3842 0.74 -379 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV + RAS 0.75 -2701 0.77 -2652 0.93 -1040 0.70 -2263 0.80 -2749 0.97 -3015 0.89 -4505 0.74 -417 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV + RAS 0.76 -2678 0.77 -2640 0.94 -972 0.70 -2333 0.79 -2959 0.97 -3095 0.89 -4594 0.73 -407 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV + RAS 0.75 -2891 0.76 -2830 0.93 -1174 0.70 -2263 0.78 -2920 0.97 -3322 0.85 -5171 0.73 -439 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.74 -2947 0.77 -2870 0.93 -1007 0.70 -2328 0.81 -3472 0.97 -3239 0.81 -3418 0.74 -396 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.75 -2874 0.77 -2799 0.93 -984 0.70 -2310 0.82 -3392 0.97 -3050 0.82 -4109 0.74 -389 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.75 -2970 0.76 -2896 0.92 -1079 0.70 -2335 0.82 -3330 0.89 -3237 0.90 -4216 0.73 -408 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.74 -2913 0.77 -2838 0.93 -1033 0.70 -2319 0.82 -3301 0.96 -3074 0.87 -4518 0.74 -399 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV + RAS 0.77 -2599 0.78 -2573 0.94 -925 0.70 -2302 0.84 -2743 0.97 -2736 0.90 -4229 0.74 -395 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV + RAS 0.75 -2991 0.76 -2921 0.93 -1075 0.70 -2371 0.79 -3481 0.97 -3150 0.88 -4589 0.74 -422 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.75 -2871 0.76 -2799 0.93 -1023 0.70 -2309 0.83 -3147 0.98 -2790 0.88 -4316 0.74 -398 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.75 -2808 0.76 -2743 0.93 -996 0.70 -2302 0.85 -2777 0.97 -2855 0.87 -4292 0.74 -393 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.75 -2821 0.77 -2745 0.93 -934 0.70 -2302 0.84 -3228 0.98 -2699 0.87 -4131 0.74 -381 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.74 -2910 0.77 -2838 0.93 -1005 0.70 -2320 0.83 -3313 0.97 -3032 0.87 -4455 0.74 -394 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.74 -2924 0.77 -2847 0.93 -1034 0.70 -2321 0.83 -3320 0.98 -2865 0.87 -4501 0.74 -399 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.74 -2916 0.77 -2839 0.93 -1031 0.70 -2320 0.83 -3341 0.98 -2920 0.87 -4484 0.74 -398 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.74 -2913 0.77 -2836 0.93 -1019 0.70 -2318 0.82 -3368 0.98 -2931 0.87 -4483 0.74 -396 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.76 -2849 0.77 -2760 0.94 -839 0.70 -2307 0.81 -3596 0.97 -3361 0.86 -4420 0.75 -365 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.76 -2669 0.77 -2615 0.93 -1098 0.70 -2148 0.79 -2374 0.97 -3591 0.85 -5146 0.74 -417 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.76 -2700 0.78 -2639 0.93 -884 0.70 -2279 0.86 -3031 0.98 -2404 0.88 -3847 0.74 -371 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.75 -2849 0.77 -2776 0.93 -1005 0.70 -2305 0.83 -3315 0.97 -2876 0.87 -4359 0.74 -394 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.75 -2846 0.76 -2772 0.93 -1007 0.70 -2304 0.83 -3290 0.98 -2726 0.87 -4302 0.74 -394 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.74 -2926 0.77 -2851 0.93 -1036 0.70 -2321 0.82 -3448 0.97 -3175 0.86 -4593 0.74 -399 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.70 -2413 0.72 -2090 0.93 -858 0.70 -2294 0.81 -3411 0.97 -3343 0.85 -4797 0.74 -375 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.74 -2948 0.77 -2869 0.93 -997 0.70 -2327 0.81 -3515 0.97 -3263 0.87 -4326 0.74 -395 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.76 -2963 0.78 -2896 0.93 -896 0.70 -2393 0.91 -2838 0.99 -1957 0.93 -2548 0.73 -401 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.76 -2965 0.78 -2898 0.93 -896 0.70 -2393 0.91 -2907 0.99 -1991 0.93 -2563 0.73 -401 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.75 -2881 0.77 -2803 0.93 -970 0.70 -2314 0.82 -3384 0.98 -2907 0.88 -4096 0.74 -389 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV + RAS 0.74 -3081 0.77 -2996 0.93 -1051 0.70 -2371 0.82 -3650 0.97 -3234 0.87 -4362 0.73 -411 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.74 -2958 0.77 -2879 0.93 -1041 0.70 -2327 0.81 -3516 0.98 -3080 0.86 -4731 0.74 -400 Page 340 of 776 Appendix D - 16hs2a_2250idnw_N_ms Base Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Midpoint Townsend Robinson Malin John Day Hanford Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.74 -2957 0.77 -2878 0.93 -1042 0.70 -2327 0.81 -3502 0.97 -3218 0.86 -4731 0.74 -400 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.75 -2972 0.76 -2889 0.93 -1047 0.70 -2330 0.81 -3552 0.97 -3322 0.86 -4689 0.74 -401 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.74 -2950 0.77 -2872 0.93 -1024 0.70 -2326 0.81 -3510 0.97 -3262 0.86 -4541 0.74 -398 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.75 -2874 0.77 -2797 0.93 -964 0.70 -2313 0.83 -3347 0.98 -2888 0.87 -4125 0.74 -388 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.75 -2985 0.77 -2902 0.93 -997 0.70 -2346 0.81 -3584 0.97 -3101 0.89 -3800 0.74 -399 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.75 -2982 0.77 -2899 0.93 -1001 0.70 -2345 0.81 -3579 0.97 -3105 0.89 -3918 0.74 -399 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.74 -2937 0.77 -2860 0.93 -1027 0.70 -2324 0.82 -3464 0.97 -3163 0.86 -4262 0.74 -398 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.75 -2966 0.76 -2883 0.93 -1041 0.70 -2329 0.81 -3538 0.97 -3298 0.86 -4624 0.74 -400 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.75 -2964 0.77 -2881 0.93 -1039 0.70 -2328 0.81 -3535 0.97 -3299 0.86 -4652 0.74 -400 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV + RAS 0.76 -2862 0.77 -2793 0.93 -1167 0.70 -2203 0.77 -2821 0.97 -4026 0.83 -5579 0.74 -426 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV + RAS 0.73 -3292 0.76 -3195 0.93 -1108 0.70 -2431 0.79 -4218 0.97 -3779 0.82 -4562 0.74 -427 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV + RAS 0.74 -3125 0.76 -3034 0.93 -1082 0.70 -2376 0.80 -3863 0.97 -3548 0.85 -4558 0.74 -415 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.74 -3114 0.76 -3032 0.93 -1098 0.70 -2379 0.80 -3361 0.97 -3417 0.89 -3980 0.73 -435 N-2: TAFT-BELL 500 KV & BELL-LANCASTER 230 KV 0.75 -2983 0.76 -2900 0.95 -898 0.70 -2339 0.81 -3498 0.97 -3277 0.86 -4541 0.74 -412 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.75 -3012 0.76 -2933 0.95 -980 0.70 -2344 0.81 -3488 0.97 -3268 0.86 -4493 0.74 -422 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV 0.75 -2983 0.76 -2900 0.95 -898 0.70 -2339 0.81 -3498 0.97 -3277 0.86 -4541 0.74 -412 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.75 -3007 0.76 -2928 0.95 -980 0.70 -2343 0.81 -3483 0.97 -3264 0.86 -4532 0.74 -421 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV 0.75 -3004 0.76 -2924 0.95 -968 0.70 -2342 0.81 -3482 0.97 -3263 0.86 -4529 0.74 -420 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.84 -2392 0.85 -2330 0.95 -450 0.70 -2308 0.81 -3479 0.97 -3262 0.86 -4500 0.78 -312 N-2: TOWNSEND-GARRISON #1 & #2 500 KV 0.81 -2683 0.84 -2482 1.00 -481 0.70 -2327 0.81 -3517 0.97 -3287 0.86 -4676 0.74 -394 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.75 -2813 0.77 -2741 0.94 -910 0.70 -2301 0.84 -3263 0.97 -2845 0.86 -4048 0.74 -377 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.75 -2813 0.77 -2741 0.94 -910 0.70 -2301 0.84 -3263 0.97 -2845 0.86 -4048 0.74 -377 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.74 -2926 0.77 -2851 0.93 -1019 0.70 -2323 0.82 -3427 0.97 -3108 0.87 -4113 0.74 -397 Page 341 of 776 Appendix D – 16hs2a_2250idnw_ms Base Case Transient Stability Plots Figure D8: N-1 Loss of Hemingway-Boardman 500 kV Line (Angle & Voltage Plots) Page 342 of 776 Appendix D – 16hs2a_2250idnw_ms Base Case Transient Stability Plots Figure D9: N-1 Loss of Townsend-Midpoint (MSTI) 500 kV Line (Angle & Voltage Plots) Page 343 of 776 Appendix D – 16hs2a_2250idnw_ms Base Case Transient Stability Plots Figure D10: N-1 Loss of Cedar Hill-Robinson (SWIP North) 500 kV Line (Angle & Voltage Plots) Page 344 of 776 Appendix D – 16hs2a_2250idnw_ms Base Case Transient Stability Plots Figure D11: Bi-Pole Block – Pacific DC Intertie (Angle & Voltage Plots) Page 345 of 776 Appendix D – 16hs2a_2250idnw_ms Base Case Transient Stability Plots Figure D12: N-2 Loss of Two Palo Verde Units (Angle & Voltage Plots) Page 346 of 776 Appendix D – 16hs2a_2250idnw_ms Base Case Transient Stability Plots Figure D13: N-2 Loss of Malin-Round Mt #1 & #2 500 kV Lines (Angle & Voltage Plots) Page 347 of 776 Appendix D - 16hs2a_2250idnw_ms Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Wood Rvr 138 Logn#4 46.0 Wood Rvr 138 Bridger3 22.0 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV Var 11.0% 0.871 11.0% 59.881 Damped Hemingway 500 kV N-1 FACRI insert Ft Rock Series Caps Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Montana1 13.8 Stable & 3 Cy 3PH MSTI (Townsend-Midpoint 500 kV) Var 13.7% 0.865 13.7% 59.822 Damped Townsend 500 kV N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Yorkcany 69 Sprague 69 Yorkcany 69 Cs____1 18.0 Stable & 3 Cy 3PH SWIPN (CedarHill-Robinson 500 kV) Var 6.7% 0.902 6.7% 59.852 Damped Robinson 500 kV Bi-pole Block FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Yorkcany 69 Sprague 69 Yorkcany 69 Sync_g19 13.8 Stable & PDCI Bipole Var 7.8% 0.907 7.8% 59.759 Damped Tracy&Olinda React Switching NW 2550 MW Gen Drop N-2 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 & CaptJack Shunt Cap C1 Midpoint 500 Goldhill 69 Ptrsnfrg 69 MuskeG4 13.8 Stable & Loss of 2 Palo Verde units Var 8.7% 0.886 8.6% 59.779 Damped N-2 Malin-Round Mt #1 500 kV Chief Jo Braking Resistor Mtshasta 69 Mtshasta 69 Kno 13g6 13.8 Stable & 4 Cy 3PH Malin-Round Mt #2 500 kV Var Tracy&Olinda React Switching 15.2% 15.2% 59.753 Damped Malin 500 kV Round Mt-Table Mt #2 500 kV NW 2400 MW Gen Drop FACRI FtRock Series Caps Flash Malin-Round Mt S-Caps Page 348 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 Page 349 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 Page 350 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_500.0 (40521) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_230.0 (40519) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line NPULLMAN_115.0 (48291) TO SHAWNEE_115.0 (48383) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCITYT_115.0 (48245) TO SPULLMAN_115.0 (48413) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS HOT SPR_500.0 (40553) TO -148.3 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4700 Hatwai 500kV & 230 kV + RAS CLOSE Line LEON_115.0 (48183) TO MOSCCITY_115.0 (48243) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCCITY_115.0 (48243) TO MOSCITYT_115.0 (48245) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS N LEWIST_115.0 (48253) TO 44.4 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS THIRHACH_115.0 (48431) TO 91.6 MVR BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 Page 351 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 Page 352 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Page 353 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) Page 354 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Cedar Hill-Robinson 500 kV (SWIP) OPEN MultiSectionLine CEDARHIL_500.0 (60159) TO ROBINSON_500.0 (64895) CKT 1 N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR Page 355 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Horse Hv-McNary 230 kV SET SWITCHED SHUNT AT BUS HARVALUM_230.0 (40511) TO 40.7 MVR N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt MIDPOINT_345.0 (60235) #2 N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 Page 356 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Midpoint-Townsend 500 kV (MSTI) OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO TWNSNDPS_500.0 (62503) CKT 1 N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS RIVERTON_230.0 (66305) TO 32.4 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS GARLAND1_ 34.5 (67147) TO 5 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS GARLAND2_ 34.5 (67148) TO 5 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT DILLON S_ 69.0 (62345) #1 TO 24 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS BIGGRASS_ 69.0 (65156) TO 29.4 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS FRANNIE_ 34.5 (67144) TO 4 MVR N-1: Midpoint-Townsend 500 kV (MSTI) SET SWITCHED SHUNT AT BUS FRANNIE2_ 34.5 (67145) TO 4 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO TWNSNDPS_500.0 (62503) CKT 1 N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS RIVERTON_230.0 (66305) TO 32.4 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS GARLAND2_ 34.5 (67148) TO 5 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT DILLON S_ 69.0 (62345) #1 TO 24 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS BIGGRASS_ 69.0 (65156) TO 29.4 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS FRANNIE_ 34.5 (67144) TO 4 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS GARLAND1_ 34.5 (67147) TO 5 MVR N-1: Midpoint-Townsend 500 kV (MSTI)+PTSN Shunt SET SWITCHED SHUNT AT BUS FRANNIE2_ 34.5 (67145) TO 4 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN MultiSectionLine ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Robinson-Harry Allen 500 kV SET SWITCHED SHUNT AT BUS ROBINSON_500.0 (64895) TO 0 MVR N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 Page 357 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap MIKKALO_500.0 (43970) TO MKLOSNT2_500.0 (43971) CKT 2 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap SANTIAM_500.0 (40941) TO SANTMKO2_500.0 (43492) CKT 2 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Townsend #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Townsend #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 Page 358 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Broadview-Townsend #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Townsend #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b Page 359 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 Page 360 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 Page 361 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 Page 362 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening Page 363 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV SET SWITCHED SHUNT AT BUS THIRHACH_115.0 (48431) TO 91.6 MVR N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Townsend-Garrison #1 & #2 500 kV OPEN Line GAR1EAST_500.0 (40451) TO TOWNSEND_500.0 (62500) CKT 1 N-2: Townsend-Garrison #1 & #2 500 kV OPEN Line GAR2EAST_500.0 (40453) TO TOWNSEND_500.0 (62500) CKT 2 N-2: Townsend-Garrison #1 & #2 500 kV CLOSE Shunt GARRISON_500.0 (40459) #r N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 Page 364 of 776 Appendix D - 16hs2a_2250idnw_N_ms Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 365 of 776 Appendix E 16hs2a_2250idnw_N_solo Base Case (Hemingway-Boardman Stand Alone) Page 366 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E1: 16hs2sa_2250idnw_N Base Case Pre-Contingency 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 223.9 Mvar 1.08 puPONDROSA 0.0 Mvar 1 5 7 3 M W - 1 3 7 M v a r 1 4 6 3 M W - 1 7 1 M v a r 1 7 0 1 M W - 2 1 8 M v a r 1585 MW -161 Mvar 308 MW 53 Mvar 269 MW 51 Mvar 302 MW 63 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD444.7 Mvar 1.08 puBUCKLEY 1.03 puLAGRANDE 55.5 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.3 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.0 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 5 9 M W - 5 2 M v a r 1 6 8 3 M W - 1 1 5 M v a r 1754 MW -86 Mvar 1759 MW -88 Mvar 412 MW -24 Mvar 1259 MW 84 Mvar 0 MW 0 Mvar 4 9 9 M W 8 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1238 MW 87 Mvar 196 MW 8 Mvar 188 MW 3 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 604 MW 33 Mvar 603 MW 31 Mvar 65 MW 73 Mvar 56 MW 61 Mvar 242 MW -43 Mvar 0 MW 0 Mvar 34 MW 51 Mvar 382 MW 25 Mvar 742 MW -216 Mvar 86 MW -60 Mvar 37 MW -51 Mvar 25 MW -55 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 367 MW -231 Mvar 1110 MW -136 Mvar 224 MW -35 Mvar 150 MW -29 Mvar 179 MW -30 Mvar 155 MW -22 Mvar 53 MW 2 Mvar 2 8 2 M W 1 8 M v a r 51 MW 28 Mvar 201 MW -56 Mvar 22 MW -63 Mvar 3 MW -35 Mvar 19 MW -32 Mvar 17 MW -36 Mvar 4 6 0 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 94.8 Mvar 0.0 Mvar 1.01 puONTARIO 53 MW 2 Mvar 33 MW 11 Mvar 339 MW 48 Mvar 3 0 4 M W - 3 5 M v a r 82 MW -12 Mvar 381 MW -52 Mvar 308 MW -15 Mvar 308 MW -15 Mvar 317 MW -20 Mvar 320 MW -41 Mvar 201 MW -53 Mvar 260 MW -65 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1119 MW -115 Mvar 918 MW -11 Mvar 96 MW 45 Mvar 530 MW -66 Mvar 558 MW -10 Mvar 519 MW -45 Mvar 462 MW 19 Mvar 434 MW 1 Mvar 427 MW 1 Mvar 491 MW -16 Mvar 503 MW -17 Mvar 775 MW -89 Mvar 4 0 1 M W 1 2 5 M v a r 1078 MW -142 Mvar 1 4 6 8 M W 5 M v a r 1 4 3 7 M W 3 2 M v a r 1 2 7 5 M W - 9 M v a r 1277 MW -121 Mvar ID-NW = -2251 MW Grassland = -1325 MW Summer Lake = -302 MW Lolo = -304 MW Walla Walla = -182 MW LaGrande = -150 MW Midpoint West = -1417 MW Borah West = 11 MW Idaho-Sierra = 499 MW N of John Day = 7800 MW COI = 4801 MW PDCI = 3101 MWID-MT = -337 MW W of McNary = 1962 MWW of Slatt = 3883 MW Alturas Project = 3 MW Path C = -1249 MW Montana Southeast = 600 MW TOT 2B1 = 85 MW TOT 2C = 250 MW 303 MW -74 Mvar 317 MW 40 Mvar 973 MW 1 Mvar 1129 MW 11 Mvar 0 M W 0 M v a r 9 8 5 M W - 1 2 0 M v a r 1 3 2 5 M W 1 4 2 M v a r 1275 MW -251 Mvar 790 MW -108 Mvar1260.05 MW-159.53 Mvar 747.71 MW-89.47 Mvar Page 367 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E2: 16hs2sa_2250idnw_N Base Case N-1: Hemingway-Grassland 500 kV Line + PTSN Shunt 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 449.6 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 4 4 M W - 1 3 1 M v a r 1 6 1 7 M W - 1 6 3 M v a r 2 1 9 8 M W - 2 4 7 M v a r 2112 MW -234 Mvar 423 MW 45 Mvar 370 MW 46 Mvar 1077 MW -280 Mvar 1.02 puHEMINWAY 1.07 pu JOHN DAY 435.3 Mvar 1.06 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 173.1 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 0.99 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD439.3 Mvar 1.06 puBUCKLEY 0.99 puLAGRANDE 51.2 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 0.98 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 155.8 Mvar 116.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.9 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.01 puIDAHO-NV 1.03 puKINPORT 186.0 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 7 4 M W 1 9 M v a r 2 0 6 3 M W 5 2 M v a r 2021 MW 49 Mvar 2027 MW 46 Mvar 470 MW -53 Mvar 895 MW 84 Mvar 0 MW 0 Mvar 4 3 5 M W - 1 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 884 MW 100 Mvar 124 MW 24 Mvar 115 MW 20 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 626 MW 34 Mvar 625 MW 32 Mvar 143 MW 56 Mvar 122 MW 46 Mvar 270 MW -39 Mvar 0 MW 0 Mvar 7 MW 66 Mvar 393 MW 23 Mvar 752 MW -225 Mvar 44 MW -51 Mvar 31 MW 33 Mvar 48 MW 36 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 234 MW -237 Mvar 1166 MW -107 Mvar 291 MW -19 Mvar 214 MW -44 Mvar 241 MW -56 Mvar 162 MW -25 Mvar 60 MW 4 Mvar 3 5 3 M W 6 2 M v a r 110 MW 38 Mvar 296 MW -52 Mvar 7 MW 65 Mvar 27 MW 38 Mvar 11 MW 34 Mvar 13 MW 39 Mvar 5 4 6 M W 9 M v a r HORSEFLT 0.99 puBOISEBCH 92.3 Mvar 0.0 Mvar 1.00 puONTARIO 60 MW 4 Mvar 46 MW 20 Mvar 390 MW 76 Mvar 3 6 8 M W - 4 3 M v a r 136 MW -54 Mvar 420 MW -79 Mvar 345 MW -20 Mvar 345 MW -20 Mvar 356 MW -27 Mvar 359 MW -56 Mvar 225 MW -66 Mvar 291 MW -82 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1176 MW -60 Mvar 807 MW 9 Mvar 89 MW 50 Mvar 474 MW -50 Mvar 521 MW -1 Mvar 484 MW -38 Mvar 429 MW 24 Mvar 398 MW 4 Mvar 391 MW 4 Mvar 440 MW -15 Mvar 450 MW -16 Mvar 670 MW -97 Mvar 4 6 8 M W 1 7 0 M v a r 1590 MW -153 Mvar 1 6 0 6 M W - 1 3 M v a r 1 5 8 4 M W 2 0 M v a r 9 9 4 M W - 1 0 2 M v a r 996 MW -182 Mvar ID-NW = -1925 MW Grassland = 0 MW Summer Lake = -1077 MW Lolo = -368 MW Walla Walla = -271 MW LaGrande = -214 MW Midpoint West = -1108 MW Borah West = 181 MW Idaho-Sierra = 435 MW N of John Day = 7639 MW COI = 4926 MW PDCI = 3101 MWID-MT = -378 MW W of McNary = 2024 MW W of Slatt = 4837 MW Alturas Project = 27 MW Path C = -1097 MW Montana Southeast = 657 MW TOT 2B1 = 42 MW TOT 2C = 207 MW 1094 MW -111 Mvar 182 MW 82 Mvar 924 MW 20 Mvar 1088 MW 24 Mvar 0 M W 0 M v a r 1 0 1 2 M W - 8 2 M v a r 0 M W 0 M v a r 0 MW 0 Mvar 551 MW -96 Mvar1023.17 MW-81.57 Mvar 578.02 MW165.90 Mvar Page 368 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E3: 16hs2sa_2250idnw_N Base Case N-1: Hemingway-Grassland 500 kV Line + FACRI 1.11 puMALIN 0.0 Mvar 241.0 Mvar 241.0 Mvar 0.0 Mvar 0.0 Mvar 1.11 puCAPTJACK 241.7 Mvar 241.7 Mvar 0.0 Mvar 1.13 puPONDROSB 1.11 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 222.7 Mvar 1.13 puPONDROSA 0.0 Mvar 1 7 4 4 M W - 4 5 5 M v a r 1 5 6 3 M W - 4 4 0 M v a r 2 7 2 6 M W - 7 3 3 M v a r 2700 MW -255 Mvar 259 MW 97 Mvar 226 MW 88 Mvar 1190 MW -125 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 456.4 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.09 pu GRASSLND 178.5 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD447.9 Mvar 1.10 puBUCKLEY 1.02 puLAGRANDE 54.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 158.7 Mvar 119.0 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.02 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.3 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.01 puIDAHO-NV 1.03 puKINPORT 186.1 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.2 Mvar 0.0 Mvar 0.0 Mvar 1.10 puMARION 0.0 Mvar 1 7 3 2 M W - 2 1 4 M v a r 2 1 2 6 M W - 1 5 6 M v a r 2175 MW -274 Mvar 2180 MW -278 Mvar 376 MW -15 Mvar 956 MW 42 Mvar 0 MW 0 Mvar 4 3 0 M W - 3 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 944 MW 56 Mvar 133 MW 18 Mvar 123 MW 14 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 620 MW 33 Mvar 619 MW 31 Mvar 139 MW 61 Mvar 119 MW 50 Mvar 276 MW -41 Mvar 0 MW 0 Mvar 18 MW 59 Mvar 394 MW 22 Mvar 751 MW -225 Mvar 50 MW -54 Mvar 24 MW 38 Mvar 40 MW 42 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 300 MW -269 Mvar 1211 MW -196 Mvar 258 MW -28 Mvar 183 MW -35 Mvar 211 MW -40 Mvar 159 MW -24 Mvar 56 MW 2 Mvar 3 1 7 M W 3 7 M v a r 79 MW 34 Mvar 246 MW -53 Mvar 8 MW -66 Mvar 11 MW 38 Mvar 5 MW -35 Mvar 3 MW -39 Mvar 5 0 1 M W - 1 M v a r HORSEFLT 1.00 puBOISEBCH 93.7 Mvar 0.0 Mvar 1.01 puONTARIO 56 MW 2 Mvar 40 MW 15 Mvar 364 MW 61 Mvar 3 3 5 M W - 3 8 M v a r 110 MW -26 Mvar 401 MW -64 Mvar 326 MW -16 Mvar 326 MW -16 Mvar 336 MW -22 Mvar 339 MW -46 Mvar 213 MW -58 Mvar 276 MW -72 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1221 MW -142 Mvar 820 MW -34 Mvar 103 MW 41 Mvar 500 MW -85 Mvar 544 MW -19 Mvar 505 MW -55 Mvar 450 MW 10 Mvar 420 MW -8 Mvar 413 MW -7 Mvar 471 MW -28 Mvar 482 MW -29 Mvar 735 MW -112 Mvar 4 3 3 M W 1 4 8 M v a r 1630 MW -240 Mvar 1 5 6 7 M W - 1 5 0 M v a r 1 5 3 4 M W - 5 9 M v a r 1 4 6 1 M W - 3 1 3 M v a r 1464 MW -461 Mvar ID-NW = -1923 MW Grassland = 0 MW Summer Lake = -1190 MW Lolo = -335 MW Walla Walla = -225 MW LaGrande = -183 MW Midpoint West = -1130 MW Borah West = 163 MW Idaho-Sierra = 430 MW N of John Day = 7756 MW COI = 4982 MW PDCI = 3101 MWID-MT = -349 MW W of McNary = 2068 MWW of Slatt = 4985 MW Alturas Project = 22 MW Path C = -1084 MW Montana Southeast = 612 MW TOT 2B1 = 34 MW TOT 2C = 198 MW 1209 MW 84 Mvar 233 MW 49 Mvar 951 MW -3 Mvar 1112 MW 6 Mvar 0 M W 0 M v a r 9 9 6 M W - 1 4 0 M v a r 0 M W 0 M v a r 0 MW 0 Mvar 599 MW -149 Mvar1070.99 MW-182.61 Mvar 578.06 MW 77.74 Mvar Page 369 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E4: 16hs2sa_2250idnw_N Base Case N-1: Midpoint-Hemingway 500 kV Line + PTSN Shunt 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.10 puHEMINWAY 487.5 Mvar 1.09 puPONDROSA 0.0 Mvar 1 6 2 8 M W - 1 0 5 M v a r 1 5 2 3 M W - 1 3 5 M v a r 1 5 9 2 M W - 2 4 8 M v a r 1454 MW -193 Mvar 284 MW 45 Mvar 248 MW 44 Mvar 117 MW 54 Mvar 1.05 puHEMINWAY 1.09 pu JOHN DAY 449.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.09 pu GRASSLND 178.5 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.01 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD446.4 Mvar 1.08 puBUCKLEY 1.01 puLAGRANDE 53.5 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.02 puQUARTZ 1.02 puBROWNLEE 157.3 Mvar 118.0 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.02 puOXBOW 1.05 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.00 puMIDPOINT 0.0 Mvar 174.9 Mvar 0.00 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 183.8 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.3 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 7 6 M W - 3 6 M v a r 1 7 2 4 M W - 8 1 M v a r 1750 MW -80 Mvar 1755 MW -83 Mvar 435 MW -14 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 3 5 7 M W - 2 7 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 54 MW -5 Mvar 43 MW -9 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 638 MW 45 Mvar 637 MW 43 Mvar 209 MW 75 Mvar 180 MW 61 Mvar 297 MW -52 Mvar 0 MW 0 Mvar 7 MW -64 Mvar 405 MW 25 Mvar 761 MW -231 Mvar 13 MW -76 Mvar 90 MW 56 Mvar 110 MW 61 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 308 MW -257 Mvar 1093 MW -133 Mvar 260 MW -25 Mvar 185 MW -34 Mvar 213 MW -40 Mvar 156 MW -23 Mvar 54 MW 2 Mvar 3 2 0 M W 4 1 M v a r 83 MW 34 Mvar 251 MW -52 Mvar 6 MW -66 Mvar 14 MW 38 Mvar 2 MW -35 Mvar 1 MW -39 Mvar 5 0 5 M W 5 M v a r HORSEFLT 0.99 puBOISEBCH 91.7 Mvar 0.0 Mvar 1.01 puONTARIO 54 MW 2 Mvar 41 MW 16 Mvar 364 MW 63 Mvar 3 3 6 M W - 3 6 M v a r 116 MW -29 Mvar 357 MW -49 Mvar 340 MW -9 Mvar 340 MW -9 Mvar 350 MW -14 Mvar 354 MW -41 Mvar 213 MW -56 Mvar 276 MW -68 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1101 MW -120 Mvar 901 MW -22 Mvar 76 MW 44 Mvar 491 MW -74 Mvar 529 MW -14 Mvar 491 MW -51 Mvar 436 MW 15 Mvar 405 MW -4 Mvar 398 MW -3 Mvar 450 MW -23 Mvar 460 MW -25 Mvar 690 MW -106 Mvar 4 3 4 M W 1 5 0 M v a r 1149 MW -99 Mvar 1 5 3 5 M W 4 3 M v a r 1 4 9 5 M W 6 6 M v a r 1 5 6 4 M W 1 5 3 M v a r 1567 MW -2 Mvar ID-NW = -1721 MW Grassland = -1094 MW Summer Lake = 117 MW Lolo = -336 MW Walla Walla = -229 MW LaGrande = -185 MW Midpoint West = -847 MW Borah West = 304 MW Idaho-Sierra = 357 MW N of John Day = 7673 MW COI = 5181 MW PDCI = 3101 MWID-MT = -384 MW W of McNary = 1934 MW W of Slatt = 3978 MW Alturas Project = 56 MW Path C = -946 MW Montana Southeast = 676 MW TOT 2B1 = -6 MW TOT 2C = 157 MW 116 MW 216 Mvar 942 MW 212 Mvar 946 MW 3 Mvar 1104 MW 10 Mvar 0 M W 0 M v a r 9 8 1 M W - 1 2 0 M v a r 1 0 9 4 M W - 1 1 8 M v a r 1061 MW -135 Mvar 722 MW -140 Mvar1192.30 MW-187.98 Mvar 515.72 MW-224.91 Mvar Page 370 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E5: 16hs2sa_2250idnw_N Base Case N-1: Malin-Round Mtn 500 kV Line 1.06 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 221.0 Mvar 1.07 puPONDROSA 0.0 Mvar 1 5 6 9 M W - 9 5 M v a r 1 4 4 1 M W - 1 2 9 M v a r 1 6 9 6 M W - 1 8 2 M v a r 1580 MW -127 Mvar 125 MW 77 Mvar 108 MW 69 Mvar 335 MW 40 Mvar 1.02 puHEMINWAY 1.08 pu JOHN DAY 444.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 173.8 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD443.3 Mvar 1.08 puBUCKLEY 1.03 puLAGRANDE 55.1 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.0 Mvar 120.0 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.01 puMIDPOINT 0.0 Mvar 179.5 Mvar 0.00 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.98 puIDAHO-NV 1.03 puKINPORT 185.6 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.4 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 2 4 8 M W - 2 3 M v a r 1 6 7 2 M W - 9 2 M v a r 1745 MW -44 Mvar 1749 MW -46 Mvar 412 MW -30 Mvar 1307 MW 64 Mvar 0 MW 0 Mvar 5 1 2 M W 8 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1285 MW 64 Mvar 209 MW -2 Mvar 202 MW -7 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 603 MW 35 Mvar 602 MW 33 Mvar 48 MW 81 Mvar 42 MW 68 Mvar 232 MW -48 Mvar 0 MW 0 Mvar 35 MW 50 Mvar 379 MW 27 Mvar 741 MW -214 Mvar 94 MW -67 Mvar 50 MW -61 Mvar 39 MW -65 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 362 MW -224 Mvar 1106 MW -125 Mvar 228 MW -34 Mvar 154 MW -30 Mvar 183 MW -31 Mvar 155 MW -22 Mvar 53 MW 2 Mvar 2 8 6 M W 2 1 M v a r 54 MW 28 Mvar 207 MW -57 Mvar 21 MW -63 Mvar 1 MW -35 Mvar 17 MW -32 Mvar 16 MW -36 Mvar 4 6 5 M W - 6 M v a r HORSEFLT 1.00 puBOISEBCH 94.2 Mvar 0.0 Mvar 1.01 puONTARIO 53 MW 2 Mvar 34 MW 11 Mvar 341 MW 49 Mvar 3 0 8 M W - 3 5 M v a r 85 MW -14 Mvar 383 MW -53 Mvar 310 MW -13 Mvar 310 MW -13 Mvar 320 MW -18 Mvar 323 MW -40 Mvar 203 MW -53 Mvar 262 MW -65 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1114 MW -104 Mvar 920 MW -4 Mvar 93 MW 47 Mvar 526 MW -60 Mvar 556 MW -7 Mvar 516 MW -42 Mvar 460 MW 21 Mvar 432 MW 3 Mvar 424 MW 3 Mvar 487 MW -14 Mvar 499 MW -15 Mvar 767 MW -86 Mvar 4 0 4 M W 1 2 6 M v a r 1067 MW -135 Mvar 1 4 6 3 M W 4 7 M v a r 1 4 1 6 M W 7 1 M v a r 1 2 3 6 M W 3 5 M v a r 1238 MW -73 Mvar ID-NW = -2317 MW Grassland = -1345 MWSummer Lake = -335 MW Lolo = -308 MW Walla Walla = -188 MW LaGrande = -154 MW Midpoint West = -1477 MWBorah West = -21 MWIdaho-Sierra = 512 MWN of John Day = 7796 MW COI = 4717 MW PDCI = 3101 MW ID-MT = -340 MW W of McNary = 1957 MW W of Slatt = 3857 MW Alturas Project = 18 MW Path C = -1294 MW Montana Southeast = 612 MW TOT 2B1 = 101 MWTOT 2C = 267 MW 337 MW -89 Mvar 320 MW 30 Mvar 973 MW 3 Mvar 1129 MW 13 Mvar 0 M W 0 M v a r 9 8 3 M W - 1 1 4 M v a r 1 3 4 5 M W 1 7 2 M v a r 1293 MW -267 Mvar 789 MW -98 Mvar1258.86 MW-142.51 Mvar 767.20 MW-86.12 Mvar Page 371 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E6: 16hs2sa_2250idnw_N Base Case BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.06 puGRIZZLY 0.0 Mvar 1.06 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 459.5 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 3 9 M W - 1 3 3 M v a r 1 6 1 2 M W - 1 6 5 M v a r 2 1 8 3 M W - 2 6 5 M v a r 2095 MW -252 Mvar 419 MW 41 Mvar 366 MW 42 Mvar 1049 MW -300 Mvar 0.98 puHEMINWAY 1.07 pu JOHN DAY 436.3 Mvar 1.06 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 173.3 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 0.99 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.07 puHANFORD439.7 Mvar 1.06 puBUCKLEY 0.98 puLAGRANDE 50.0 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 0.98 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 0.98 puHURICANE 0.99 puQUARTZ 1.01 puBROWNLEE 153.2 Mvar 114.9 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.2 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.01 puIDAHO-NV 1.03 puKINPORT 186.2 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 6 8 M W 1 0 M v a r 2 0 5 7 M W 4 2 M v a r 2012 MW 35 Mvar 2018 MW 32 Mvar 471 MW -52 Mvar 1049 MW 160 Mvar 0 MW 0 Mvar 4 3 5 M W 1 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1034 MW 172 Mvar 127 MW 31 Mvar 117 MW 27 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 626 MW 32 Mvar 625 MW 30 Mvar 144 MW 52 Mvar 123 MW 42 Mvar 271 MW -36 Mvar 0 MW 0 Mvar 6 MW 66 Mvar 393 MW 22 Mvar 752 MW -226 Mvar 43 MW -46 Mvar 31 MW 27 Mvar 48 MW 30 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 219 MW -247 Mvar 1159 MW -111 Mvar 302 MW -12 Mvar 223 MW -44 Mvar 250 MW -58 Mvar 163 MW -25 Mvar 61 MW 4 Mvar 3 6 4 M W 7 4 M v a r 119 MW 42 Mvar 312 MW -49 Mvar 12 MW 66 Mvar 32 MW 39 Mvar 16 MW 36 Mvar 18 MW 41 Mvar 5 6 0 M W 2 0 M v a r HORSEFLT 0.98 puBOISEBCH 89.9 Mvar 0.0 Mvar 0.99 puONTARIO 61 MW 4 Mvar 48 MW 23 Mvar 398 MW 84 Mvar 3 7 7 M W - 4 2 M v a r 145 MW -60 Mvar 436 MW -81 Mvar 348 MW -14 Mvar 348 MW -14 Mvar 359 MW -20 Mvar 362 MW -50 Mvar 229 MW -65 Mvar 296 MW -80 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1168 MW -67 Mvar 808 MW 6 Mvar 86 MW 48 Mvar 469 MW -55 Mvar 519 MW -4 Mvar 482 MW -41 Mvar 427 MW 22 Mvar 396 MW 1 Mvar 389 MW 2 Mvar 436 MW -19 Mvar 446 MW -20 Mvar 662 MW -105 Mvar 4 7 8 M W 1 8 2 M v a r 1586 MW -156 Mvar 1 6 0 2 M W - 1 3 M v a r 1 5 8 0 M W 1 9 M v a r 1 0 0 8 M W - 7 8 M v a r 1009 MW -160 Mvar ID-NW = -1932 MW Grassland = 0 MW Summer Lake = -1049 MW Lolo = -377 MW Walla Walla = -286 MW LaGrande = -223 MW Midpoint West = -1104 MW Borah West = 186 MW Idaho-Sierra = 435 MW N of John Day = 7627 MW COI = 4925 MW PDCI = 3101 MWID-MT = -379 MW W of McNary = 2012 MWW of Slatt = 4819 MW Alturas Project = 26 MW Path C = -1094 MW Montana Southeast = 655 MW TOT 2B1 = 41 MW TOT 2C = 206 MW 1065 MW -150 Mvar 0 MW 0 Mvar 924 MW 19 Mvar 1088 MW 24 Mvar 0 M W 0 M v a r 1 0 1 1 M W - 8 5 M v a r 0 M W 0 M v a r 0 MW 0 Mvar 543 MW -102 Mvar1015.01 MW-87.88 Mvar 578.02 MW161.59 Mvar Page 372 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E7: 16hs2sa_2250idnw_N Base Case BF IPC Hemingway-Grassland 500 kV Line & Hemingway 500/230 Xfmr 1.06 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 214.5 Mvar 1.07 puPONDROSA 0.0 Mvar 1 5 7 8 M W - 1 5 2 M v a r 1 4 6 4 M W - 1 8 7 M v a r 1 8 1 2 M W - 2 1 2 M v a r 1708 MW -160 Mvar 340 MW 57 Mvar 297 MW 55 Mvar 563 MW 56 Mvar 1.01 puHEMINWAY 1.08 pu JOHN DAY 441.3 Mvar 1.06 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puSACJWA T 1.05 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 171.2 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.01 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD436.8 Mvar 1.07 puBUCKLEY 1.01 puLAGRANDE 53.4 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 157.2 Mvar 117.9 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.04 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.00 puMIDPOINT 0.0 Mvar 175.7 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 184.4 Mvar 1.01 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 185.6 Mvar 0.00 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 0.99 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 218.5 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 2 7 8 M W - 5 2 M v a r 1 6 7 1 M W - 1 2 1 M v a r 1804 MW -68 Mvar 1809 MW -71 Mvar 381 MW -33 Mvar 1664 MW 7 Mvar 0 MW 0 Mvar 4 3 9 M W - 1 4 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1627 MW -14 Mvar 356 MW -41 Mvar 354 MW -48 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 0 MW 0 Mvar 0 MW 0 Mvar 196 MW -106 Mvar 167 MW -95 Mvar 1 MW 38 Mvar 0 MW 0 Mvar 74 MW -141 Mvar 470 MW -78 Mvar 829 MW -255 Mvar 145 MW -47 Mvar 194 MW -116 Mvar 194 MW -124 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 349 MW -221 Mvar 1113 MW -133 Mvar 251 MW -28 Mvar 176 MW -34 Mvar 204 MW -39 Mvar 163 MW -27 Mvar 61 MW 1 Mvar 3 1 1 M W 3 5 M v a r 65 MW 36 Mvar 243 MW -57 Mvar 16 MW -65 Mvar 4 MW 38 Mvar 12 MW -34 Mvar 10 MW -39 Mvar 4 9 8 M W 4 M v a r HORSEFLT 0.99 puBOISEBCH 92.0 Mvar 0.0 Mvar 1.00 puONTARIO 61 MW 1 Mvar 39 MW 15 Mvar 364 MW 58 Mvar 3 3 5 M W - 4 1 M v a r 105 MW -27 Mvar 394 MW -59 Mvar 327 MW -10 Mvar 327 MW -10 Mvar 337 MW -16 Mvar 341 MW -40 Mvar 213 MW -57 Mvar 275 MW -71 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1122 MW -106 Mvar 1009 MW -8 Mvar 70 MW 54 Mvar 528 MW -48 Mvar 569 MW -7 Mvar 528 MW -41 Mvar 471 MW 19 Mvar 444 MW -2 Mvar 436 MW -1 Mvar 506 MW -22 Mvar 517 MW -23 Mvar 804 MW -110 Mvar 4 2 2 M W 1 4 4 M v a r 1025 MW -166 Mvar 1 4 6 3 M W - 1 8 M v a r 1 4 3 8 M W 1 2 M v a r 1 1 3 0 M W - 8 9 M v a r 1131 MW -185 Mvar ID-NW = -2790 MW Grassland = -1503 MW Summer Lake = -563 MW Lolo = -335 MWWalla Walla = -221 MW LaGrande = -176 MW Midpoint West = -1908 MW Borah West = -374 MW Idaho-Sierra = 439 MW N of John Day = 8106 MW COI = 4670 MW PDCI = 3101 MW ID-MT = -376 MW W of McNary = 1957 MW W of Slatt = 3821 MW Alturas Project = 13 MW Path C = -756 MW Montana Southeast = 581 MW TOT 2B1 = -6 MW TOT 2C = 172 MW 568 MW -16 Mvar 335 MW 18 Mvar 1031 MW -26 Mvar 1185 MW -7 Mvar 0 M W 0 M v a r 9 9 5 M W - 1 1 5 M v a r 1 5 0 3 M W 3 3 0 M v a r 1436 MW -416 Mvar 826 MW -91 Mvar1295.70 MW-129.15 Mvar 925.39 MW-32.42 Mvar Page 373 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E8: 16hs2sa_2250idnw_N Base Case Bi-Pole Loss of Pacific DC Intertie 1.05 puMALIN 0.0 Mvar 217.2 Mvar 217.2 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 215.3 Mvar 1.09 puPONDROSA 0.0 Mvar 2 1 3 3 M W - 2 3 6 M v a r 1 9 5 3 M W - 2 3 2 M v a r 2 5 3 5 M W - 5 3 5 M v a r 2467 MW -114 Mvar 327 MW -25 Mvar 287 MW -17 Mvar 565 MW -15 Mvar 1.01 puHEMINWAY 1.09 pu JOHN DAY 450.5 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 174.5 Mvar 1.08 puCOYOTE 1.09 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD453.5 Mvar 1.08 puBUCKLEY 1.03 puLAGRANDE 55.0 Mvar 1.05 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 159.3 Mvar 119.4 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.09 puCEN FERY 0.0 Mvar 1.09 puLIT GOOS 1.03 puOXBOW 1.05 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.00 puMIDPOINT 0.0 Mvar 174.3 Mvar 0.00 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.00 puADELAIDE 0.96 puIDAHO-NV 1.02 puKINPORT 183.5 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 6 4 8 M W - 2 1 M v a r 1 9 1 4 M W - 4 5 M v a r 2505 MW 66 Mvar 2512 MW 63 Mvar 252 MW -42 Mvar 1502 MW 71 Mvar 0 MW 0 Mvar 5 6 8 M W 1 2 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1471 MW 60 Mvar 257 MW -22 Mvar 252 MW -28 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 613 MW 48 Mvar 612 MW 46 Mvar 18 MW -96 Mvar 14 MW -83 Mvar 188 MW -64 Mvar 0 MW 0 Mvar 31 MW 43 Mvar 379 MW 28 Mvar 749 MW -221 Mvar 121 MW -85 Mvar 98 MW -82 Mvar 91 MW -88 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 412 MW -242 Mvar 1022 MW -120 Mvar 234 MW -31 Mvar 159 MW -28 Mvar 188 MW -30 Mvar 149 MW -21 Mvar 46 MW 1 Mvar 2 9 2 M W 2 5 M v a r 76 MW 23 Mvar 207 MW -52 Mvar 10 MW -61 Mvar 10 MW 33 Mvar 6 MW -30 Mvar 4 MW -35 Mvar 4 6 5 M W - 2 M v a r HORSEFLT 1.00 puBOISEBCH 93.0 Mvar 0.0 Mvar 1.01 puONTARIO 46 MW 1 Mvar 35 MW 11 Mvar 335 MW 50 Mvar 3 0 1 M W - 3 2 M v a r 88 MW -15 Mvar 383 MW -50 Mvar 312 MW -7 Mvar 312 MW -7 Mvar 322 MW -12 Mvar 326 MW -34 Mvar 200 MW -48 Mvar 258 MW -59 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1029 MW -131 Mvar 783 MW 91 Mvar 137 MW 6 Mvar 534 MW -85 Mvar 537 MW -22 Mvar 499 MW -59 Mvar 444 MW 8 Mvar 414 MW -9 Mvar 406 MW -8 Mvar 462 MW -29 Mvar 472 MW -30 Mvar 715 MW -112 Mvar 4 0 4 M W 1 3 5 M v a r 801 MW -153 Mvar 2 0 3 1 M W 1 8 1 M v a r 1 9 0 7 M W 2 1 5 M v a r 1 8 8 0 M W 5 4 M v a r 1884 MW -169 Mvar ID-NW = -2527 MW Grassland = -1327 MW Summer Lake = -565 MW Lolo = -301 MW Walla Walla = -188 MW LaGrande = -159 MW Midpoint West = -1699 MW Borah West = -143 MW Idaho-Sierra = 568 MW N of John Day = 6948 MW COI = 6334 MW PDCI = 0 MWID-MT = -343 MW W of McNary = 1771 MW W of Slatt = 3747 MW Alturas Project = 55 MW Path C = -1503 MW Montana Southeast = 591 MW TOT 2B1 = 198 MW TOT 2C = 387 MW 570 MW -82 Mvar 339 MW 11 Mvar 871 MW 45 Mvar 1025 MW 39 Mvar 0 M W 0 M v a r 9 3 3 M W - 1 2 9 M v a r 1 3 2 7 M W 2 0 7 M v a r 1276 MW -221 Mvar 823 MW -82 Mvar1292.06 MW-145.04 Mvar 749.55 MW-32.03 Mvar Page 374 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E9: 16hs2sa_2250idnw_N Base Case Loss of Two Palo Verde Units 1.07 puMALIN 0.0 Mvar 227.1 Mvar 227.1 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 227.7 Mvar 227.7 Mvar 0.0 Mvar 1.10 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 216.7 Mvar 1.10 puPONDROSA 0.0 Mvar 1 9 5 2 M W - 4 2 8 M v a r 1 7 8 5 M W - 3 9 8 M v a r 2 3 3 9 M W - 6 4 4 M v a r 2259 MW -267 Mvar 299 MW 83 Mvar 261 MW 77 Mvar 526 MW 35 Mvar 1.01 puHEMINWAY 1.07 pu JOHN DAY 437.5 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.05 puSACJWA T 1.04 puMCNRY S1 1.05 puASHE 0.0 Mvar 1.07 pu GRASSLND 170.8 Mvar 1.06 puCOYOTE 1.06 puLOW MON 0.0 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.05 puHANFORD420.9 Mvar 1.07 puBUCKLEY 1.02 puLAGRANDE 54.1 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.00 puTALBOT QUARTZTP 1.00 puWALA AVA 1.00 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 158.2 Mvar 118.6 Mvar 1.00 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.00 puLOLO 1.01 puHATWAI 1.05 puHATWAI 1.06 puLOW GRAN 1.06 puCEN FERY 0.0 Mvar 1.06 puLIT GOOS 1.02 puOXBOW 1.05 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.00 puMIDPOINT 0.0 Mvar 175.2 Mvar 0.00 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.96 puIDAHO-NV 1.02 puKINPORT 183.4 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.2 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 6 5 2 M W - 1 7 7 M v a r 1 9 2 8 M W - 1 5 5 M v a r 2232 MW -203 Mvar 2237 MW -207 Mvar 260 MW -12 Mvar 1450 MW 80 Mvar 0 MW 0 Mvar 5 5 7 M W 9 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1422 MW 72 Mvar 248 MW -15 Mvar 242 MW -21 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 621 MW 49 Mvar 620 MW 47 Mvar 11 MW -90 Mvar 9 MW -77 Mvar 182 MW -62 Mvar 0 MW 0 Mvar 19 MW 49 Mvar 380 MW 28 Mvar 752 MW -224 Mvar 113 MW -81 Mvar 89 MW -75 Mvar 81 MW -80 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 424 MW -199 Mvar 1240 MW -181 Mvar 227 MW -34 Mvar 153 MW -32 Mvar 182 MW -35 Mvar 170 MW -34 Mvar 68 MW -2 Mvar 2 8 5 M W 2 1 M v a r 27 MW 42 Mvar 216 MW -66 Mvar 34 MW -67 Mvar 14 MW -40 Mvar 30 MW -36 Mvar 29 MW -40 Mvar 4 7 3 M W - 3 M v a r HORSEFLT 1.00 puBOISEBCH 92.7 Mvar 0.0 Mvar 1.01 puONTARIO 68 MW -2 Mvar 35 MW 12 Mvar 355 MW 44 Mvar 3 2 2 M W - 4 7 M v a r 82 MW -17 Mvar 389 MW -57 Mvar 316 MW -10 Mvar 316 MW -10 Mvar 326 MW -16 Mvar 330 MW -38 Mvar 208 MW -59 Mvar 269 MW -72 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1251 MW -102 Mvar 1170 MW -78 Mvar 49 MW 89 Mvar 565 MW -16 Mvar 620 MW -2 Mvar 576 MW -32 Mvar 517 MW 20 Mvar 494 MW -3 Mvar 486 MW -2 Mvar 577 MW -26 Mvar 591 MW -27 Mvar 949 MW -130 Mvar 3 8 5 M W 1 3 3 M v a r 1215 MW -200 Mvar 1 8 3 7 M W - 6 4 M v a r 1 7 4 6 M W 1 7 M v a r 1 7 1 4 M W - 1 3 8 M v a r 1717 MW -328 Mvar ID-NW = -2477 MW Grassland = -1295 MW Summer Lake = -526 MW Lolo = -322 MWWalla Walla = -196 MW LaGrande = -153 MW Midpoint West = -1653 MWBorah West = -120 MW Idaho-Sierra = 557 MWN of John Day = 8907 MW COI = 5777 MW PDCI = 3101 MW ID-MT = -369 MW W of McNary = 2099 MW W of Slatt = 4399 MW Alturas Project = 46 MW Path C = -1514 MW Montana Southeast = 629 MW TOT 2B1 = 234 MW TOT 2C = 365 MW 530 MW -48 Mvar 321 MW 23 Mvar 1167 MW -110 Mvar 1313 MW -67 Mvar 0 M W 0 M v a r 1 0 3 0 M W - 1 1 8 M v a r 1 2 9 5 M W 1 5 4 M v a r 1245 MW -238 Mvar 909 MW -115 Mvar1377.23 MW-156.18 Mvar 717.10 MW-144.37 Mvar Page 375 of 776 Appendix E – 16hs2sa_2250idnw_solo Base Case Post-Transient Contingency Results Figure E10: 16hs2sa_2250idnw_N Base Case N-2 Loss of Malin-Round Mtn #1 & #2 500 kV Lines 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 225.1 Mvar 1.09 puPONDROSA 0.0 Mvar 1 2 9 2 M W - 2 6 M v a r 1 0 8 0 M W - 9 0 M v a r 1 4 1 1 M W - 1 0 1 M v a r 1292 MW -27 Mvar 851 MW 99 Mvar 745 MW 102 Mvar 492 MW 36 Mvar 1.03 puHEMINWAY 1.10 pu JOHN DAY 459.2 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.09 puSACJWA T 1.06 puMCNRY S1 1.10 puASHE 0.0 Mvar 1.09 pu GRASSLND 178.7 Mvar 1.08 puCOYOTE 1.09 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.10 puHANFORD460.1 Mvar 1.10 puBUCKLEY 1.04 puLAGRANDE 56.4 Mvar 1.05 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.03 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.04 puQUARTZ 1.04 puBROWNLEE 161.8 Mvar 121.3 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.04 puLOLO 1.05 puHATWAI 1.09 puHATWAI 1.09 puLOW GRAN 1.09 puCEN FERY 0.0 Mvar 1.09 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.1 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.98 puIDAHO-NV 1.03 puKINPORT 185.9 Mvar 0.00 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.3 Mvar 0.0 Mvar 0.0 Mvar 1.10 puMARION 0.0 Mvar 1 0 0 1 M W - 3 3 M v a r 1 4 7 8 M W - 1 5 0 M v a r 1402 MW -90 Mvar 1405 MW -93 Mvar 467 MW -22 Mvar 1368 MW 119 Mvar 0 MW 0 Mvar 5 3 6 M W 1 6 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1343 MW 117 Mvar 217 MW 6 Mvar 210 MW 1 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 610 MW 35 Mvar 609 MW 33 Mvar 39 MW 73 Mvar 34 MW 62 Mvar 226 MW -49 Mvar 0 MW 0 Mvar 35 MW 47 Mvar 384 MW 22 Mvar 748 MW -223 Mvar 97 MW -62 Mvar 57 MW -54 Mvar 47 MW -58 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 340 MW -285 Mvar 1012 MW -137 Mvar 215 MW -36 Mvar 142 MW -25 Mvar 170 MW -25 Mvar 146 MW -18 Mvar 43 MW 2 Mvar 2 7 2 M W 1 4 M v a r 67 MW 18 Mvar 180 MW -51 Mvar 14 MW -60 Mvar 5 MW 32 Mvar 11 MW -29 Mvar 9 MW -33 Mvar 4 4 0 M W - 1 1 M v a r HORSEFLT 1.01 puBOISEBCH 95.5 Mvar 0.0 Mvar 1.02 puONTARIO 43 MW 2 Mvar 31 MW 8 Mvar 319 MW 45 Mvar 2 8 2 M W - 2 8 M v a r 77 MW -6 Mvar 373 MW -46 Mvar 301 MW -13 Mvar 301 MW -13 Mvar 310 MW -19 Mvar 313 MW -39 Mvar 193 MW -48 Mvar 249 MW -58 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1019 MW -156 Mvar 573 MW 84 Mvar 197 MW -3 Mvar 540 MW -103 Mvar 537 MW -29 Mvar 499 MW -65 Mvar 443 MW 4 Mvar 413 MW -11 Mvar 406 MW -10 Mvar 461 MW -30 Mvar 472 MW -31 Mvar 714 MW -104 Mvar 3 8 9 M W 1 2 5 M v a r 996 MW -136 Mvar 1 1 8 0 M W 1 4 1 M v a r 1 0 6 7 M W 1 3 5 M v a r 7 9 1 M W 9 3 M v a r 792 MW 34 Mvar ID-NW = -2333 MW Grassland = -1266 MW Summer Lake = -492 MW Lolo = -282 MW Walla Walla = -162 MW LaGrande = -142 MW Midpoint West = -1522 MW Borah West = -41 MW Idaho-Sierra = 536 MW N of John Day = 6623 MW COI = 3353 MW PDCI = 3101 MW ID-MT = -326 MW W of McNary = 1849 MW W of Slatt = 3496 MW Alturas Project = 55 MW Path C = -1333 MWMontana Southeast = 552 MW TOT 2B1 = 126 MW TOT 2C = 307 MW 495 MW -64 Mvar 344 MW 39 Mvar 797 MW 58 Mvar 958 MW 45 Mvar 0 M W 0 M v a r 8 9 7 M W - 1 5 8 M v a r 1 2 6 6 M W 1 1 5 M v a r 1221 MW -168 Mvar 687 MW -130 Mvar1157.41 MW-191.79 Mvar 688.13 MW-28.61 Mvar Page 376 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr No Violations BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 447.3 983.3 979.0 100.4% 1287.7 76.4% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 340.5 794.9 722.9 110.0% 1265.2 62.8% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1701.3 2942.3 2199.7 133.8% 3235.5 90.9% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1701.3 2942.3 2199.7 133.8% 3235.5 90.9% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1700.0 2935.0 2666.9 110.1% 3999.9 73.4% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1691.6 2924.6 2667.0 109.7% 4000.0 73.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1654.9 2923.9 2229.7 131.1% 3514.1 83.2% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1654.9 2923.9 2699.7 108.3% 3999.9 73.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1647.9 2899.4 2699.7 107.4% 4000.0 72.5% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV PTRSNFUR (62386) % Δ Volts 0.969 0.918 5.3% BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1701.3 2977.3 2199.7 135.3% 3235.5 92.0% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1701.3 2977.3 2199.7 135.3% 3235.5 92.0% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1700.0 2969.8 2666.9 111.4% 3999.9 74.2% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1691.6 2959.5 2667.0 111.0% 4000.0 74.0% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 275.9 367.4 320.0 114.8% 370.0 99.3% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 646.8 1260.3 950.0 132.7% 1286.0 98.0% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 84.5 94.5 94.0 100.5% 139.0 68.0% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 275.9 352.1 320.0 110.0% 370.0 95.2% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 646.8 1145.5 950.0 120.6% 1286.0 89.1% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations Page 377 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV OLYMPIA (40797) % Δ Volts 1.064 1.001 5.9% BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OLYMPIA (40797) % Δ Volts 1.064 0.996 6.4% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 821.0 800.0 102.6% 1199.9 68.4% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 946.5 920.0 102.9% 1046.8 90.4% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 946.9 920.0 102.9% 1046.8 90.5% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1305.8 1237.0 105.6% 1396.0 93.5% BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 934.1 920.0 101.5% 1046.8 89.2% BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 807.0 800.0 100.9% 1199.9 67.3% BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1249.4 1237.0 101.0% 1396.0 89.5% BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations Page 378 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1392.1 1237.0 112.5% 1396.0 99.7% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 1009.5 920.0 109.7% 1046.8 96.4% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 821.8 800.0 102.7% 1199.9 68.5% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LAGRANDE (40619) % Δ Volts 0.981 0.925 5.7% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr IMNAHA (60278) % Δ Volts 0.997 0.944 5.3% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr N POWDER (60313) % Δ Volts 0.997 0.945 5.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1244.4 1237.0 100.6% 1396.0 89.1% BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1241.1 1237.0 100.3% 1396.0 88.9% BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 859.0 800.0 107.4% 1199.9 71.6% BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN PTRSNFUR (62386) % Δ Volts 0.969 0.905 6.6% BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN AMPS (65025) % Δ Volts 0.96 0.899 6.4% BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN PTRSNFLT (62030) % Δ Volts 0.952 0.892 6.3% BF IPC Midpoint-Hem 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1259.5 1237.0 101.8% 1396.0 90.2% BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 JONTMB11 (90164) % Δ Volts 1.027 0.967 5.8% BF McNary 230 kV SECT 3 MCNARY (40717) % Δ Volts 1.028 0.946 8.0% BF McNary 230 kV SECT 3 MCN PH6 (44128) % Δ Volts 1.03 0.948 8.0% BF McNary 230 kV SECT 3 MCN TX7 (44121) % Δ Volts 1.03 0.949 7.9% BF McNary 230 kV SECT 3 PATTER T (40819) % Δ Volts 1.024 0.945 7.7% BF McNary 230 kV SECT 3 BERRIAN (40103) % Δ Volts 1.023 0.946 7.5% BF McNary 230 kV SECT 3 H2F (40493) % Δ Volts 1.022 0.95 7.0% BF McNary 230 kV SECT 3 FRANKLIN (40443) % Δ Volts 1.01 0.951 5.8% BF McNary 230 kV SECT 3 MCNARY (40715) % Δ Volts 1.007 0.95 5.7% BF McNary 230 kV SECT 3 UMATILLA (45313) % Δ Volts 1.007 0.952 5.5% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1317.0 1237.0 106.5% 1396.0 94.3% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 954.4 920.0 103.7% 1046.8 91.2% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 811.1 800.0 101.4% 1199.9 67.6% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen HEMBOA11 (61953) % Δ Volts 1.078 0.994 7.8% Bus: Alvey 500 kV + RAS No Violations Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Page 379 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 84.5 97.6 94.0 103.9% 139.0 70.2% Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Allston-Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 84.5 97.6 94.0 103.8% 139.0 70.2% N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 885.6 1033.0 1009.1 102.4% 1285.2 80.4% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV QUARTZ (60305) -> NELSN TP (61055) CKT 1 at QUARTZ Branch Amp 213.9 401.7 400.0 100.4% 491.2 81.8% N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 252.2 837.8 785.7 106.6% 926.3 90.5% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 252.2 837.8 785.7 106.6% 926.3 90.5% N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1701.3 2612.7 2199.7 118.8% 3235.5 80.8% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1701.3 2612.7 2199.7 118.8% 3235.5 80.8% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1817.5 2467.0 2199.9 112.1% 3280.5 75.2% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1802.1 2446.1 2199.9 111.2% 3280.5 74.6% N-1: Captain Jack-Olinda 500 kV MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1654.9 2537.0 2229.7 113.8% 3514.1 72.2% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2624.7 2477.9 105.9% 3999.9 65.6% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 340.5 752.3 722.9 104.1% 1265.2 59.5% Page 380 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 822.6 800.0 102.8% 1199.9 68.6% N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1245.2 1237.0 100.7% 1396.0 89.2% N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 946.2 920.0 102.9% 1046.8 90.4% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 966.3 920.0 105.0% 1046.8 92.3% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1352.2 1237.0 109.3% 1396.0 96.9% N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 976.0 920.0 106.1% 1046.8 93.2% N-1: Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 820.5 800.0 102.6% 1199.9 68.4% N-1: Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts 0.969 0.903 6.8% N-1: Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.952 0.89 6.5% N-1: Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts 0.96 0.908 5.4% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1709.8 2928.2 2400.0 122.0% 3199.9 91.5% N-1: Hemingway-Grassland 500 kV + FACRI HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1244.7 1237.0 100.6% 1396.0 89.2% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1716.2 2943.7 2400.0 122.7% 3800.0 77.5% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1350.3 1237.0 109.2% 1396.0 96.7% N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 973.9 920.0 105.9% 1046.8 93.0% N-1: Hemingway-Grassland 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 823.4 800.0 102.9% 1199.9 68.6% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations Page 381 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1701.3 2944.9 2199.7 133.9% 3235.5 91.0% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1701.3 2944.9 2199.7 133.9% 3235.5 91.0% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALROU21 Branch Amp 1700.0 2937.4 2666.9 110.1% 3999.9 73.4% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1691.6 2927.5 2667.0 109.8% 4000.0 73.2% N-1: Malin-Round Mtn #2 500 kV MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1654.9 2919.6 2229.7 130.9% 3514.1 83.1% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1654.9 2919.6 2699.7 108.1% 3999.9 73.0% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1647.9 2906.9 2699.7 107.7% 4000.0 72.7% N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-Coyote-Slatt 500 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1241.9 1237.0 100.4% 1396.0 89.0% N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1243.5 1237.0 100.5% 1396.0 89.1% N-1: Midpoint-Hemingway 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 855.5 800.0 106.9% 1199.9 71.3% N-1: Midpoint-Hemingway 500 kV PTRSNFUR (62386) % Δ Volts 0.969 0.871 10.1% N-1: Midpoint-Hemingway 500 kV PTRSNFLT (62030) % Δ Volts 0.952 0.86 9.7% N-1: Midpoint-Hemingway 500 kV AMPS (65025) % Δ Volts 0.96 0.879 8.4% N-1: Midpoint-Hemingway 500 kV BIGGRASS (65155) % Δ Volts 0.98 0.928 5.3% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1241.1 1237.0 100.3% 1396.0 88.9% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 856.7 800.0 107.1% 1199.9 71.4% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt PTRSNFUR (62386) % Δ Volts 0.969 0.907 6.4% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt AMPS (65025) % Δ Volts 0.96 0.9 6.2% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt PTRSNFLT (62030) % Δ Volts 0.952 0.894 6.1% Page 382 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1240.9 1237.0 100.3% 1396.0 88.9% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 858.1 800.0 107.3% 1199.9 71.5% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt PTRSNFUR (62386) % Δ Volts 0.969 0.911 6.0% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt PTRSNFLT (62030) % Δ Volts 0.952 0.897 5.8% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt AMPS (65025) % Δ Volts 0.96 0.906 5.6% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1240.0 1237.0 100.2% 1396.0 88.8% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 858.7 800.0 107.3% 1199.9 71.6% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt AMPS (65025) % Δ Volts 0.96 0.909 5.3% N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt PTRSNFUR (62386) % Δ Volts 0.969 0.918 5.3% N-1: Midpoint-Humboldt 345 kV CAL S PS (64023) -> CAL SUB (64025) CKT 1 at CAL SUB Branch MVA 93.3 157.1 150.0 104.7% 180.0 87.3% N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1263.8 1237.0 102.2% 1396.0 90.5% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 275.9 343.8 320.0 107.4% 370.0 92.9% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 646.8 1127.6 950.0 118.7% 1286.0 87.7% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1817.5 3271.7 2199.9 148.7% 3280.5 99.7% N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUTAB21 Branch Amp 1817.5 3271.7 2667.0 122.7% 4000.0 81.8% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 1807.7 3258.1 2667.0 122.2% 4000.0 81.5% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 296.2 336.9 326.3 103.2% 416.7 80.8% N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2921.7 2477.9 117.9% 3999.9 73.0% N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 1945.6 2921.7 2667.0 109.6% 4000.0 73.0% N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at TABVAC12 Branch Amp 1919.0 2901.2 2667.0 108.8% 4000.0 72.5% N-1: Table Mtn-Tesla 500 kV VACTES11 (30044) -> TESLA (30040) CKT 1 at VACTES11 Branch Amp 1420.3 2325.5 2230.0 104.3% 3555.9 65.4% N-1: Table Mtn-Vaca Dixon 500 kV PEASE (32200) -> E.MRY J1 (32288) CKT 1 at PEASE Branch Amp 404.8 449.4 441.8 101.7% 507.1 88.6% Page 383 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Table Mtn-Vaca Dixon 500 kV E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 296.2 357.3 326.3 109.5% 416.7 85.7% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1496.3 2642.4 2230.0 118.5% 3555.9 74.3% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 822.2 800.0 102.8% 1199.9 68.5% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV + RAS MIDPOINT (60240) -> MPSNT501 (60237) CKT 1 at MPSNT501 Branch MVA 1241.0 1641.3 1500.0 109.4% 1650.0 99.5% N-2: Bridger-Populus #1 & #2 345 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 800.0 800.0 100.0% 1199.9 66.7% N-2: Bridger-Populus #1 & #2 345 kV + RAS MIDHEM11 (61988) -> MIDPOINT (60240) CKT 1 at MIDHEM11 Branch Amp 1382.4 1813.9 1732.1 104.7% 3600.0 50.4% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MIDPOINT (60240) -> MPSNT501 (60237) CKT 1 at MPSNT501 Branch MVA 1241.0 1632.2 1500.0 108.8% 1650.0 98.9% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 850.4 800.0 106.3% 1199.9 70.9% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS MIDHEM11 (61988) -> MIDPOINT (60240) CKT 1 at MIDHEM11 Branch Amp 1382.4 1831.9 1732.1 105.8% 3600.0 50.9% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS BIGGRASS (65155) % Δ Volts 0.98 0.91 7.1% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS AMPS (65025) % Δ Volts 0.96 0.891 7.2% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS PTRSNFUR (62386) % Δ Volts 0.969 0.902 6.9% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS PTRSNFLT (62030) % Δ Volts 0.952 0.889 6.6% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SPAR CYN (66765) % Δ Volts 0.987 0.938 5.0% N-2: Broadview-Garrison #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV LAGRANDE (40619) % Δ Volts 0.981 0.927 5.5% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV PILOT RK (45413) % Δ Volts 0.986 0.935 5.2% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV ATHENA (45015) % Δ Volts 0.986 0.936 5.1% N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 769.9 940.2 920.0 102.2% 1046.8 89.8% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1709.8 2711.2 2400.0 113.0% 3199.9 84.7% Page 384 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: DC-BIPOLE E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 296.2 332.6 326.3 101.9% 416.7 79.8% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1817.5 2378.2 2199.9 108.1% 3280.5 72.5% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1802.1 2358.1 2199.9 107.2% 3280.5 71.9% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1716.2 2725.1 2400.0 113.5% 3800.0 71.7% N-2: DC-BIPOLE MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1701.3 2310.2 2199.7 105.0% 3235.5 71.4% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1701.3 2310.2 2199.7 105.0% 3235.5 71.4% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1624.0 2312.5 2134.0 108.4% 3499.9 66.1% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDVIN11 Branch Amp 1602.3 2278.7 2134.0 106.8% 3499.9 65.1% N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 1580.4 2249.9 2134.0 105.4% 3499.9 64.3% N-2: DC-BIPOLE MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1654.9 2244.9 2229.7 100.7% 3514.1 63.9% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2508.5 2477.9 101.2% 3999.9 62.7% N-2: DC-BIPOLE YORKCANY (12091) % Δ Volts 0.999 0.943 5.6% N-2: DC-BIPOLE SPRINGER (12077) % Δ Volts 1.001 0.947 5.4% N-2: DC-BIPOLE CIMARRON (12148) % Δ Volts 1.002 0.948 5.4% N-2: DC-BIPOLE RAINVL_T (12130) % Δ Volts 1.007 0.955 5.2% N-2: DC-BIPOLE RAINVL1 (12129) % Δ Volts 1.007 0.955 5.2% N-2: Double Palo Verde HESPERUS (79071) -> COYOTE G (79191) CKT 1 at HESPERUS Branch Amp 345.1 433.5 431.8 100.4% 441.8 98.1% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1709.8 2477.4 2400.0 103.2% 3199.9 77.4% N-2: Double Palo Verde MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 801.6 800.0 100.2% 1199.9 66.8% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1716.2 2496.6 2400.0 104.0% 3800.0 65.7% N-2: Double Palo Verde MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1624.0 2164.6 2134.0 101.4% 3499.9 61.8% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1716.2 3134.9 2400.0 130.6% 3800.0 82.5% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1370.5 2972.4 2700.0 110.1% 4000.0 74.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1594.3 2959.9 2400.0 123.3% 3800.0 77.9% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1579.8 2945.5 2400.0 122.7% 3800.0 77.5% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1594.3 2952.8 2400.0 123.0% 3800.0 77.7% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1579.8 2941.5 2400.0 122.6% 3800.0 77.4% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1805.8 3057.1 2900.0 105.4% 4350.0 70.3% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH12 Branch Amp 1867.4 3397.5 3000.0 113.2% 4050.0 83.9% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS No Violations N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1870.3 3771.5 2667.4 141.4% 4099.2 92.0% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1834.9 3661.7 2667.4 137.3% 4099.2 89.3% Page 385 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1834.9 3661.7 2667.4 137.3% 4099.2 89.3% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1963.7 3175.6 2993.0 106.1% 4514.9 70.3% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1963.7 3175.6 2993.0 106.1% 4514.9 70.3% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1934.0 3143.0 2993.0 105.0% 4514.9 69.6% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at MAXWELL Branch Amp 1934.0 3143.0 2993.0 105.0% 4514.9 69.6% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1912.8 3106.2 2993.0 103.8% 4514.9 68.8% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV HORSE HV (40547) % Δ Volts 1.033 0.979 5.2% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV HORSE HV (40547) % Δ Volts 1.033 0.98 5.1% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1121.0 1248.6 1237.0 100.9% 1396.0 89.4% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 866.0 800.0 108.2% 1199.9 72.2% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV PTRSNFUR (62386) % Δ Volts 0.969 0.895 7.6% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV PTRSNFLT (62030) % Δ Volts 0.952 0.882 7.4% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV AMPS (65025) % Δ Volts 0.96 0.89 7.3% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV DILLON S (62084) % Δ Volts 0.975 0.913 6.4% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV BIGGRASS (65155) % Δ Volts 0.98 0.918 6.3% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV GARLAND1 (67147) % Δ Volts 1.017 0.963 5.3% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV SHERDNMT (62158) % Δ Volts 0.98 0.928 5.3% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 275.9 345.3 320.0 107.9% 370.0 93.3% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 646.8 1132.1 950.0 119.2% 1286.0 88.0% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 665.5 870.9 830.9 104.8% 926.3 94.0% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1870.3 3513.4 2667.4 131.7% 4099.2 85.7% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1834.9 3419.7 2667.4 128.2% 4099.2 83.4% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1834.9 3405.5 2667.4 127.7% 4099.2 83.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1963.7 3457.6 2993.0 115.5% 4514.9 76.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1963.7 3457.6 2993.0 115.5% 4514.9 76.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1934.0 3438.9 2993.0 114.9% 4514.9 76.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1934.0 3438.9 2993.0 114.9% 4514.9 76.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1912.8 3406.9 2993.0 113.8% 4514.9 75.5% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations Page 386 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 288.7 921.6 825.9 111.6% 976.5 94.4% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 235.3 863.1 825.1 104.6% 975.0 88.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 388.6 466.4 462.9 100.8% 579.9 80.4% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV ADDY (40017) % Δ Volts 1.016 0.961 5.4% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV METCHIP (48223) % Δ Volts 1.012 0.959 5.2% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV ORIN (48301) % Δ Volts 1.007 0.955 5.2% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV ARDEN (48015) % Δ Volts 1.009 0.957 5.2% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV COLV AVA (48083) % Δ Volts 1.006 0.955 5.1% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 722.8 802.7 800.0 100.3% 1199.9 66.9% N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 387 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.86 -921 0.92 -2915 0.77 -1830 0.98 -2424 0.83 -2926 0.94 -1480 0.71 -612 0.76 -342 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.86 -899 0.92 -2983 0.77 -1774 0.98 -2010 0.81 -2894 0.93 -1831 0.71 -606 0.76 -336 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.86 -930 0.92 -3185 0.77 -1854 0.98 -2171 0.83 -3109 0.94 -1502 0.70 -625 0.76 -342 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.86 -889 0.92 -3048 0.77 -1748 0.98 -1985 0.87 -2457 0.94 -1691 0.71 -609 0.76 -331 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.85 -923 0.89 -2761 0.77 -1862 0.98 -1983 0.88 -2938 0.93 -1850 0.71 -603 0.76 -335 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.86 -941 0.91 -3279 0.76 -1877 0.98 -2277 0.84 -3161 0.93 -1977 0.70 -628 0.76 -345 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.86 -979 0.92 -3023 0.76 -1938 0.98 -2309 0.85 -3219 0.93 -2004 0.73 -566 0.77 -295 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.87 -771 0.95 -2331 0.79 -1454 0.99 -1230 0.88 -1928 0.94 -1303 0.72 -569 0.77 -304 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.86 -908 0.92 -3130 0.77 -1774 0.98 -2501 0.85 -2583 0.93 -1883 0.71 -615 0.76 -335 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.87 -803 0.94 -2569 0.79 -1503 0.98 -1477 0.86 -1835 0.94 -1445 0.72 -581 0.77 -312 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.86 -940 0.90 -2952 0.77 -1886 0.98 -2641 0.86 -3125 0.93 -1965 0.70 -625 0.76 -343 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.86 -942 0.89 -2749 0.77 -1897 0.98 -2206 0.86 -3134 0.93 -1963 0.71 -616 0.76 -339 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.86 -974 0.93 -2857 0.76 -1925 0.98 -2271 0.86 -3186 0.93 -1993 0.76 -476 0.77 -276 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.85 -951 0.91 -3281 0.76 -1903 0.98 -2316 0.85 -3216 0.93 -2012 0.77 -480 0.76 -314 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500 KV 0.86 -944 0.92 -2942 0.76 -1888 0.98 -2231 0.86 -3127 0.93 -1974 0.80 -396 0.76 -311 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.86 -859 0.93 -2753 0.78 -1648 0.98 -1560 0.87 -2585 0.93 -1659 0.71 -601 0.76 -326 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.86 -851 0.94 -2512 0.78 -1664 0.98 -1413 0.89 -2323 0.94 -1510 0.71 -594 0.76 -322 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.85 -944 0.92 -3093 0.76 -1887 0.98 -2269 0.85 -3173 0.93 -1995 0.80 -397 0.77 -296 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.86 -915 0.93 -2779 0.77 -1813 0.98 -1682 0.88 -2667 0.93 -1508 0.70 -619 0.76 -341 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.86 -899 0.92 -3102 0.77 -1745 0.98 -2041 0.85 -2539 0.93 -1849 0.71 -612 0.76 -334 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.85 -904 0.92 -2720 0.77 -1826 0.98 -1800 0.89 -2833 0.93 -1778 0.71 -599 0.76 -324 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.85 -931 0.92 -2965 0.76 -1848 0.97 -1959 0.87 -2858 0.93 -1849 0.70 -625 0.76 -344 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.86 -949 0.92 -3169 0.76 -1892 0.98 -2109 0.86 -3079 0.93 -1892 0.70 -632 0.76 -348 BF 4231 MCNARY-COYOTE-SLATT 500 KV & MCNARY 500/230 KV XFMR 0.86 -900 0.92 -2980 0.78 -1933 0.98 -2218 0.85 -3245 0.93 -1973 0.70 -629 0.76 -345 BF 4234 MCNARY-COYOTE-SLATT & MCNARY-HERMCALP 500 KV 0.85 -985 0.93 -2700 0.76 -2048 0.98 -2184 0.87 -3385 0.93 -2016 0.70 -626 0.76 -354 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.85 -931 0.92 -2708 0.77 -1874 0.98 -2068 0.87 -3023 0.93 -1882 0.71 -597 0.77 -321 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.86 -942 0.91 -3018 0.76 -1894 0.98 -2236 0.86 -3142 0.93 -1981 0.70 -625 0.76 -343 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.86 -950 0.92 -3067 0.76 -1910 0.98 -2307 0.85 -3221 0.93 -2009 0.70 -622 0.76 -344 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.86 -950 0.91 -3212 0.76 -1908 0.98 -2304 0.85 -3209 0.93 -2006 0.70 -627 0.76 -345 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV 0.85 -921 0.93 -2851 0.77 -1829 0.98 -1844 0.89 -2651 0.92 -1320 0.71 -612 0.76 -336 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV + RAS 0.85 -989 0.92 -2856 0.76 -2018 0.99 -2105 0.87 -3333 0.93 -1819 0.70 -629 0.76 -361 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.86 -940 0.93 -3031 0.76 -1877 0.99 -1948 0.86 -2955 0.93 -1762 0.70 -627 0.76 -345 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.86 -949 0.92 -3107 0.76 -1905 0.98 -2274 0.85 -3180 0.93 -1999 0.70 -629 0.76 -346 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.86 -947 0.92 -2957 0.76 -1906 0.98 -2268 0.85 -3184 0.93 -1996 0.70 -621 0.76 -343 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.86 -947 0.92 -2965 0.76 -1905 0.98 -2257 0.86 -3164 0.93 -1992 0.70 -621 0.76 -343 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV + RAS 0.85 -976 0.92 -2993 0.76 -1982 0.98 -2135 0.87 -2998 0.93 -1618 0.70 -643 0.76 -369 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.86 -945 0.92 -3200 0.76 -1880 0.98 -2194 0.86 -3093 0.92 -1715 0.70 -631 0.76 -347 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.86 -949 0.92 -3186 0.76 -1897 0.98 -2167 0.85 -3075 0.93 -1870 0.70 -631 0.76 -347 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.86 -948 0.92 -3208 0.76 -1896 0.98 -2180 0.86 -3109 0.94 -1816 0.70 -631 0.76 -347 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.85 -943 0.92 -3098 0.76 -1884 0.99 -2009 0.87 -3015 0.93 -1835 0.70 -629 0.76 -345 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.85 -941 0.92 -3089 0.76 -1879 0.99 -1935 0.86 -3028 0.93 -1864 0.70 -628 0.76 -345 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV + RAS 0.85 -1058 0.95 -2273 0.75 -2206 0.98 -2402 0.86 -3833 0.93 -1988 0.70 -641 0.75 -385 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.85 -929 0.93 -2945 0.77 -1842 0.98 -1923 0.88 -2723 0.92 -1339 0.70 -622 0.76 -341 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV + RAS 0.85 -1080 0.91 -3362 0.74 -2230 0.97 -2879 0.82 -4095 0.92 -2368 0.70 -680 0.75 -400 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.85 -919 0.93 -2596 0.77 -1844 0.98 -1960 0.87 -2926 0.93 -1873 0.71 -604 0.76 -332 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV + RAS 0.85 -966 0.94 -2584 0.76 -1964 0.98 -2214 0.86 -3313 0.93 -2026 0.70 -621 0.76 -351 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.86 -943 0.92 -3138 0.77 -1889 0.98 -2206 0.86 -3124 0.93 -1955 0.70 -625 0.76 -343 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.85 -976 0.92 -3004 0.76 -1985 0.98 -2301 0.86 -3334 0.93 -1995 0.70 -628 0.76 -355 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.85 -981 0.92 -3075 0.76 -1996 0.98 -2398 0.85 -3426 0.93 -2064 0.70 -632 0.76 -357 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.86 -939 0.92 -3055 0.76 -1881 0.98 -2124 0.87 -3043 0.93 -1899 0.70 -621 0.76 -342 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.86 -953 0.91 -3274 0.76 -1915 0.98 -2336 0.85 -3227 0.93 -2018 0.70 -632 0.76 -347 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.86 -850 0.92 -2692 0.78 -1834 0.99 -2055 0.87 -3075 0.93 -1847 0.71 -598 0.76 -321 Page 388 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.86 -945 0.91 -3228 0.76 -1901 0.98 -2276 0.85 -3178 0.93 -1996 0.70 -626 0.76 -343 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.85 -1072 0.91 -3269 0.74 -2152 0.98 -2774 0.83 -3817 0.93 -2234 0.72 -594 0.76 -353 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.86 -941 0.93 -2514 0.76 -1885 0.98 -2123 0.87 -3057 0.93 -1937 0.71 -616 0.76 -342 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.85 -935 0.91 -3053 0.77 -1887 0.98 -2214 0.86 -3131 0.93 -1973 0.70 -623 0.76 -341 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.85 -938 0.92 -3084 0.76 -1879 0.98 -2121 0.87 -3041 0.93 -1899 0.70 -621 0.76 -341 BF 4700 HATWAI 500KV & 230 KV + RAS 0.86 -1098 0.91 -3236 0.73 -2171 0.98 -2735 0.83 -3788 0.93 -2219 0.72 -588 0.76 -349 BF 4708 HATWAI 500 KV BUS 0.86 -982 0.93 -2710 0.75 -1947 0.98 -2259 0.86 -3198 0.93 -1992 0.75 -513 0.78 -261 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.86 -948 0.91 -3078 0.76 -1904 0.98 -2268 0.85 -3173 0.93 -1994 0.70 -624 0.76 -345 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV + RAS 0.86 -910 0.92 -2899 0.78 -1912 0.98 -2392 0.85 -3364 0.93 -2056 0.72 -567 0.77 -307 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.86 -891 0.92 -2977 0.78 -1866 0.98 -2324 0.85 -3259 0.93 -2017 0.73 -555 0.77 -299 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.86 -954 0.92 -3240 0.76 -1906 0.97 -2273 0.86 -3137 0.93 -1981 0.70 -633 0.76 -348 BF 4888 ASHE-SLATT & CGS 500 KV 0.85 -998 0.92 -2704 0.76 -2093 0.98 -2477 0.85 -3634 0.93 -2081 0.70 -619 0.76 -356 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.85 -904 0.91 -2403 0.77 -1855 0.99 -1815 0.87 -2863 0.93 -1758 0.71 -592 0.76 -322 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.86 -913 0.90 -2558 0.77 -1893 0.98 -2126 0.87 -3095 0.93 -1943 0.71 -596 0.76 -323 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.86 -888 0.93 -2448 0.77 -1770 0.99 -1549 0.89 -2573 0.93 -1524 0.71 -601 0.76 -328 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.88 -743 0.93 -2985 0.79 -1076 0.98 -1926 0.84 -2516 0.93 -1773 0.72 -583 0.77 -315 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.88 -787 0.93 -2856 0.79 -1136 0.98 -1773 0.85 -2348 0.94 -1638 0.72 -583 0.77 -314 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.86 -931 0.91 -3288 0.76 -1853 0.98 -2709 0.76 -3077 0.93 -2016 0.70 -626 0.76 -343 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.86 -792 0.95 -2132 0.81 -1635 0.99 -1074 0.91 -2017 0.94 -1250 0.74 -537 0.78 -278 BF 5006 SLATT-COYOTE-MCNARY & SLATT-GRASSLAND 500 KV 0.85 -878 0.94 -2527 0.80 -1758 0.98 -1664 0.89 -2742 0.93 -1705 0.72 -570 0.77 -303 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.86 -860 0.93 -2352 0.78 -1724 0.99 -1470 0.91 -2468 0.94 -1467 0.72 -582 0.77 -314 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.85 -901 0.92 -2569 0.77 -1804 0.98 -1716 0.89 -2835 0.93 -1763 0.71 -599 0.76 -325 BF 5021 SLATT-JOHN DAY & SLATT-COYOTE-MCNARY 500 KV 0.85 -941 0.92 -2876 0.77 -1884 0.98 -1936 0.87 -3171 0.93 -1942 0.70 -625 0.76 -343 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.87 -770 0.94 -2562 0.79 -1482 0.98 -1463 0.88 -2230 0.94 -1469 0.72 -567 0.77 -302 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.86 -869 0.93 -2836 0.78 -1706 0.98 -2172 0.87 -2611 0.93 -1694 0.71 -602 0.76 -325 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.86 -946 0.92 -2900 0.76 -1903 0.98 -2239 0.86 -3161 0.93 -1993 0.71 -616 0.76 -342 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.86 -946 0.92 -2897 0.76 -1900 0.98 -2220 0.86 -3147 0.93 -1985 0.70 -623 0.76 -343 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.86 -936 0.93 -2572 0.77 -1878 0.98 -2125 0.86 -3078 0.93 -1946 0.71 -604 0.76 -335 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.85 -934 0.91 -2789 0.77 -1880 0.98 -2080 0.87 -3045 0.93 -1908 0.71 -602 0.76 -333 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.86 -948 0.91 -2985 0.76 -1903 0.98 -2226 0.86 -3141 0.93 -1974 0.71 -618 0.76 -341 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.86 -850 0.92 -2692 0.78 -1834 0.99 -2055 0.87 -3075 0.93 -1847 0.71 -598 0.76 -321 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.85 -967 0.93 -2466 0.76 -1959 0.98 -2020 0.88 -3122 0.93 -1901 0.71 -597 0.76 -332 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.85 -899 0.92 -2622 0.77 -1809 0.98 -1777 0.89 -2785 0.93 -1744 0.71 -598 0.76 -325 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.85 -900 0.92 -2604 0.77 -1822 0.99 -1784 0.89 -2854 0.93 -1769 0.71 -591 0.76 -322 BF 5266 SLATT-BUCKLY 500 KV 0.86 -889 0.93 -2836 0.77 -1753 0.98 -1790 0.88 -2716 0.93 -1688 0.71 -611 0.76 -334 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.86 -950 0.91 -3112 0.76 -1909 0.98 -2262 0.86 -3159 0.93 -1986 0.70 -622 0.76 -342 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.86 -941 0.89 -3079 0.76 -1904 0.98 -2228 0.86 -3159 0.93 -1974 0.71 -616 0.76 -340 BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.91 -487 0.94 -2693 0.80 -1278 0.98 -1636 0.89 -2303 0.94 -1580 0.74 -533 0.78 -272 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.91 -599 0.91 -3267 0.75 -1140 0.98 -2705 0.85 -2991 0.93 -2005 0.71 -604 0.76 -331 BF IPC MIDPOINT-HEM 500 KV & ADEL-MIDPOINT 345 KV + PTSN 0.88 -739 0.91 -3329 0.78 -1436 0.98 -2771 0.85 -2882 0.93 -1995 0.75 -484 0.79 -237 BF LOLO 230KV 0.87 -960 0.92 -3069 0.74 -1905 0.98 -2112 0.86 -2992 0.93 -1924 0.71 -609 0.76 -328 BF MCNARY 230 KV SECT 1 0.86 -1001 0.92 -3173 0.75 -2015 0.98 -2459 0.84 -3453 0.93 -2086 0.70 -629 0.76 -355 BF MCNARY 230 KV SECT 2 0.86 -979 0.92 -3178 0.76 -1968 0.98 -2807 0.83 -3355 0.96 -1880 0.70 -630 0.76 -352 BF MCNARY 230 KV SECT 3 0.86 -959 0.92 -3031 0.76 -1938 0.98 -2705 0.86 -3223 0.93 -1985 0.70 -630 0.76 -351 BF PGE SLATT-GRASSLAND 500 KV & BOARDMAN COAL GEN 0.86 -828 0.94 -2452 0.82 -1552 0.98 -1588 0.89 -2485 0.94 -1591 0.73 -537 0.77 -287 BUS: ALVEY 500 KV + RAS 0.85 -997 0.91 -3472 0.75 -2020 0.98 -2544 0.86 -2976 0.94 -1887 0.70 -653 0.75 -375 BUS: BELL BPA 500 KV 0.86 -950 0.93 -2996 0.76 -1909 0.98 -2277 0.85 -3170 0.93 -1993 0.72 -583 0.76 -354 BUS: BUCKLEY 500 KV 0.86 -861 0.94 -2561 0.77 -1673 0.99 -1451 0.89 -2420 0.93 -1333 0.71 -602 0.76 -328 BUS: DIXONVILLE 500 KV 0.86 -876 0.92 -3037 0.77 -1715 0.98 -1951 0.87 -2373 0.94 -1724 0.71 -605 0.76 -328 BUS: HOT SPRINGS 500 KV 0.86 -948 0.91 -3231 0.76 -1904 0.98 -2298 0.85 -3205 0.93 -2003 0.71 -602 0.76 -341 BUS: KEELER 500 KV + RAS 0.85 -1059 0.95 -2185 0.75 -2201 0.99 -2041 0.89 -3488 0.94 -1694 0.70 -643 0.75 -386 BUS: SICKLER 500 KV 0.86 -946 0.92 -2891 0.76 -1903 0.98 -2242 0.86 -3159 0.93 -1988 0.71 -618 0.76 -342 Page 389 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BUS: SUMMER LAKE 500 KV 0.89 -725 0.94 -2775 0.79 -1046 0.98 -1714 0.85 -2285 0.94 -1611 0.72 -577 0.77 -311 N-1: ALLSTON-KEELER 500 KV + RAS 0.85 -1063 0.95 -2399 0.74 -2217 0.98 -2932 0.86 -3883 0.93 -2036 0.70 -644 0.75 -386 N-1: ALLSTON-NAPAVINE 500 KV 0.85 -938 0.92 -3078 0.76 -1879 0.98 -2118 0.87 -3039 0.93 -1897 0.70 -621 0.76 -341 N-1: ALLSTON-PAUL #2 500 KV 0.85 -938 0.92 -3083 0.76 -1879 0.98 -2118 0.87 -3039 0.93 -1898 0.70 -621 0.76 -341 N-1: ALVERY-DIXONVILLE 500 KV 0.86 -882 0.92 -3052 0.77 -1731 0.98 -1974 0.87 -2405 0.93 -1815 0.71 -607 0.76 -330 N-1: ALVEY-MARION 500 KV 0.86 -895 0.93 -2971 0.77 -1767 0.98 -1903 0.87 -2527 0.93 -1710 0.71 -610 0.76 -333 N-1: ASHE-HANFORD 500 KV 0.86 -949 0.90 -2880 0.76 -1910 0.98 -2698 0.86 -3157 0.93 -1987 0.70 -622 0.76 -342 N-1: ASHE-LOW MON 500 KV 0.86 -939 0.91 -3105 0.76 -1892 0.98 -2243 0.86 -3142 0.93 -1982 0.70 -626 0.76 -343 N-1: ASHE-MARION 500 KV 0.86 -896 0.93 -2625 0.77 -1788 0.99 -1609 0.89 -2618 0.93 -1546 0.71 -605 0.76 -331 N-1: ASHE-SLATT 500 KV 0.85 -908 0.92 -2625 0.77 -1863 0.99 -1863 0.88 -2921 0.93 -1792 0.71 -597 0.76 -323 N-1: BELL-COULEE 500 KV 0.86 -948 0.92 -3096 0.76 -1904 0.98 -2285 0.85 -3178 0.93 -1998 0.72 -591 0.76 -342 N-1: BELL-TAFT 500 KV 0.86 -953 0.92 -3150 0.76 -1911 0.98 -2286 0.85 -3171 0.93 -1995 0.72 -592 0.76 -356 N-1: BIG EDDY-CELILO 500 KV 0.86 -950 0.91 -3306 0.76 -1909 0.98 -2308 0.85 -3210 0.93 -2007 0.70 -631 0.76 -346 N-1: BIG EDDY-JOHN DAY 500 KV 0.86 -952 0.91 -3259 0.76 -1906 0.97 -2317 0.85 -3175 0.93 -1994 0.70 -632 0.76 -347 N-1: BIG EDDY-KNIGHT 500 KV 0.86 -934 0.92 -3081 0.77 -1875 0.98 -2097 0.87 -3054 0.93 -1918 0.70 -619 0.76 -339 N-1: BIG EDDY-OSTRANDER 500 KV 0.85 -948 0.92 -3217 0.76 -1896 0.98 -2207 0.86 -3123 0.93 -1909 0.70 -630 0.76 -347 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.86 -876 0.91 -3270 0.77 -1780 0.98 -2265 0.85 -3148 0.93 -1989 0.70 -626 0.76 -343 N-1: BRADY-ANTELOPE 230 KV 0.86 -946 0.91 -3283 0.76 -1897 0.98 -2295 0.85 -3198 0.93 -2001 0.70 -585 0.76 -344 N-1: BROADVIEW-GARRISON #1 500 KV 0.86 -955 0.91 -3271 0.76 -1915 0.98 -2326 0.85 -3230 0.93 -2017 0.76 -516 0.77 -285 N-1: BROWNLEE-ONTARIO 230 KV 0.86 -836 0.91 -3234 0.79 -1669 0.98 -2233 0.86 -3106 0.93 -1977 0.70 -624 0.76 -342 N-1: BUCKLEY-GRIZZLY 500 KV 0.86 -895 0.93 -2988 0.77 -1778 0.98 -1933 0.86 -2805 0.93 -1808 0.71 -610 0.76 -333 N-1: BUCKLEY-MARION 500 KV 0.85 -940 0.92 -3138 0.76 -1865 0.98 -2120 0.86 -3023 0.93 -1579 0.70 -629 0.76 -346 N-1: BUCKLEY-SLATT 500 KV 0.86 -889 0.93 -2840 0.77 -1753 0.98 -1790 0.88 -2716 0.93 -1688 0.71 -611 0.76 -334 N-1: CAPTAIN JACK-OLINDA 500 KV 0.87 -850 0.93 -2865 0.78 -1611 0.98 -1797 0.86 -2029 0.94 -1684 0.72 -591 0.76 -318 N-1: CAPTJACK-KFALLS 500 KV 0.86 -880 0.92 -3130 0.77 -1717 0.98 -2018 0.80 -2835 0.93 -2034 0.71 -607 0.76 -330 N-1: CHIEF JO-COULEE 500 KV 0.86 -950 0.91 -3124 0.76 -1907 0.98 -2281 0.85 -3180 0.93 -1998 0.70 -627 0.76 -346 N-1: CHIEF JO-MONROE 500 KV 0.86 -946 0.93 -2962 0.76 -1900 0.98 -2254 0.86 -3151 0.93 -1989 0.70 -624 0.76 -344 N-1: CHIEF JO-SICKLER 500 KV 0.86 -948 0.91 -3075 0.76 -1904 0.98 -2278 0.85 -3180 0.93 -1996 0.70 -621 0.76 -342 N-1: COULEE-HANFORD 500 KV 0.85 -941 0.92 -2695 0.77 -1901 0.98 -2174 0.86 -3149 0.93 -1952 0.72 -588 0.76 -327 N-1: COULEE-SCHULTZ 500 KV 0.85 -941 0.93 -2801 0.77 -1890 0.98 -2206 0.86 -3140 0.93 -1975 0.71 -608 0.76 -336 N-1: COVINGTON4-RAVER 500 KV 0.86 -951 0.91 -3274 0.76 -1911 0.98 -2317 0.85 -3216 0.93 -2011 0.70 -631 0.76 -347 N-1: COVINGTON5-RAVER 500 KV 0.86 -951 0.91 -3272 0.76 -1911 0.98 -2317 0.85 -3215 0.93 -2011 0.70 -631 0.76 -347 N-1: CUSTERW-MONROE 500 KV 0.86 -950 0.92 -3088 0.76 -1912 0.98 -2310 0.85 -3223 0.93 -2010 0.70 -623 0.76 -344 N-1: DIXONVILLE-MERIDIAN 500 KV 0.86 -888 0.92 -3060 0.77 -1748 0.98 -2001 0.85 -2585 0.93 -1766 0.71 -608 0.76 -331 N-1: DRYCREEK-LOLO 230 KV 0.86 -950 0.91 -3307 0.76 -1909 0.98 -2311 0.85 -3211 0.93 -2008 0.70 -630 0.76 -346 N-1: DRYCREEK-N LEWISTON 230 KV 0.86 -952 0.91 -3299 0.76 -1910 0.98 -2307 0.85 -3208 0.93 -2006 0.70 -630 0.76 -346 N-1: DRYCREEK-WALA AVA 230 KV 0.86 -953 0.91 -3290 0.76 -1910 0.98 -2304 0.85 -3207 0.93 -2005 0.70 -629 0.76 -345 N-1: DWORSHAK-HATWAI 500 KV + RAS 0.86 -987 0.93 -2663 0.76 -1942 0.98 -2239 0.86 -3196 0.93 -1984 0.75 -514 0.78 -260 N-1: DWORSHAK-TAFT 500 KV 0.86 -976 0.92 -2920 0.76 -1929 0.98 -2284 0.86 -3187 0.93 -1995 0.75 -509 0.77 -282 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.86 -952 0.91 -3156 0.76 -1911 0.98 -2295 0.85 -3210 0.93 -2008 0.70 -631 0.76 -347 N-1: ECHO LAKE-RAVER 500 KV 0.86 -948 0.91 -3192 0.76 -1904 0.98 -2287 0.85 -3183 0.93 -2004 0.70 -627 0.76 -345 N-1: ECHO LAKE-SCHULTZ 500 KV 0.86 -947 0.91 -3077 0.76 -1901 0.98 -2248 0.86 -3148 0.93 -1989 0.70 -628 0.76 -345 N-1: ECHO LAKE-SNOK TAP 500 KV 0.86 -947 0.92 -2948 0.76 -1904 0.98 -2250 0.86 -3167 0.93 -1996 0.71 -617 0.76 -342 N-1: GARRISON-TAFT #2 500 KV 0.85 -945 0.91 -3158 0.76 -1891 0.98 -2276 0.85 -3170 0.93 -1996 0.79 -434 0.76 -306 N-1: GOLDHILL-PLACER 115 KV 0.86 -953 0.91 -3345 0.76 -1914 0.98 -2342 0.85 -3249 0.93 -2024 0.70 -632 0.76 -346 N-1: GRASSLAND-COYOTE 500 KV 0.86 -951 0.91 -3309 0.76 -1910 0.98 -2312 0.85 -3212 0.93 -2009 0.70 -631 0.76 -346 N-1: GRASSLAND-SLATT 500 KV 0.85 -874 0.93 -2834 0.80 -1715 0.98 -1792 0.88 -2697 0.93 -1737 0.72 -573 0.77 -305 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.86 -872 0.93 -2884 0.78 -1720 0.98 -1781 0.87 -2639 0.93 -1703 0.71 -602 0.76 -326 N-1: GRIZZLY-MALIN 500 KV 0.86 -860 0.93 -2854 0.78 -1670 0.98 -1773 0.85 -2500 0.94 -1634 0.71 -602 0.76 -326 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.86 -821 0.93 -2874 0.78 -1598 0.98 -2232 0.86 -2569 0.94 -1669 0.72 -584 0.77 -314 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.86 -856 0.93 -2812 0.78 -1661 0.98 -2172 0.86 -2450 0.94 -1616 0.71 -601 0.76 -325 N-1: GRIZZLY-ROUND BU 500 KV 0.86 -950 0.91 -3293 0.76 -1902 0.98 -2705 0.85 -3193 0.93 -2000 0.70 -631 0.76 -346 Page 390 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: HANFORD-LOW MON 500 KV 0.86 -946 0.91 -3061 0.76 -1900 0.98 -2261 0.85 -3167 0.93 -1989 0.70 -628 0.76 -345 N-1: HANFORD-VANTAGE 500 KV 0.86 -941 0.89 -3078 0.76 -1904 0.98 -2227 0.86 -3158 0.93 -1973 0.71 -615 0.76 -340 N-1: HANFORD-WAUTOMA 500 KV 0.86 -945 0.91 -3197 0.76 -1899 0.98 -2265 0.85 -3173 0.93 -1988 0.70 -628 0.76 -345 N-1: HATWAI 500/230 KV XFMR + RAS 0.86 -977 0.91 -3263 0.75 -1932 0.98 -2263 0.85 -3151 0.93 -1989 0.70 -631 0.76 -342 N-1: HATWAI-LOLO 230 KV 0.86 -956 0.91 -3273 0.76 -1914 0.98 -2288 0.85 -3185 0.93 -1999 0.70 -628 0.76 -344 N-1: HATWAI-LOW GRAN 500 KV 0.86 -892 0.92 -3002 0.78 -1870 0.98 -2344 0.85 -3273 0.93 -2026 0.73 -556 0.77 -300 N-1: HATWAI-N LEWISTON 230 KV 0.86 -952 0.91 -3301 0.76 -1911 0.98 -2308 0.85 -3209 0.93 -2007 0.70 -630 0.76 -346 N-1: HELLS CANYON-BROWNLEE 230 KV 0.86 -816 0.92 -3010 0.78 -1725 0.98 -2025 0.87 -2905 0.93 -1889 0.71 -601 0.76 -328 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.85 -1006 0.92 -3143 0.75 -1911 0.98 -2166 0.86 -3050 0.93 -1950 0.70 -618 0.76 -338 N-1: HEMINGWAY-GRASSLAND 500 KV 0.88 -682 0.94 -2625 0.82 -1270 0.98 -1580 0.89 -2261 0.94 -1548 0.74 -521 0.78 -267 N-1: HEMINGWAY-GRASSLAND 500 KV + FACRI 0.87 -774 0.91 -3220 0.78 -1422 0.98 -2751 0.87 -3232 0.93 -2028 0.72 -579 0.77 -313 N-1: HEMINGWAY-GRASSLAND 500 KV + PTSN SHUNT 0.88 -688 0.94 -2641 0.82 -1282 0.98 -1589 0.89 -2274 0.94 -1554 0.74 -529 0.78 -269 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.88 -798 0.91 -3270 0.78 -1171 0.98 -2688 0.85 -2980 0.93 -1997 0.71 -605 0.76 -330 N-1: HILL TOP 345/230 XFMR 0.85 -948 0.91 -3300 0.76 -1886 0.98 -2294 0.85 -3116 0.93 -1998 0.70 -630 0.76 -346 N-1: HORSE HV-MCNARY 230 KV 0.86 -941 0.91 -3259 0.76 -1895 0.98 -2276 0.85 -3173 0.93 -1989 0.70 -630 0.76 -346 N-1: HOT SPRINGS-TAFT 500 KV 0.86 -948 0.91 -3231 0.76 -1904 0.98 -2298 0.85 -3205 0.93 -2003 0.71 -602 0.76 -341 N-1: HUMBOLDT-COYOTE CK 345 KV 0.86 -1027 0.91 -3223 0.76 -1978 0.98 -2228 0.85 -2991 0.93 -1939 0.70 -639 0.76 -350 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.86 -964 0.91 -3329 0.76 -1941 0.98 -2317 0.85 -3194 0.93 -2007 0.70 -638 0.76 -352 N-1: ING500-CUSTERW 500 KV 0.86 -950 0.91 -3219 0.76 -1909 0.98 -2305 0.85 -3209 0.93 -2006 0.70 -627 0.76 -345 N-1: JOHN DAY-MARION 500 KV 0.85 -936 0.92 -3115 0.76 -1865 0.98 -2048 0.87 -2968 0.93 -1605 0.70 -627 0.76 -345 N-1: JOHN DAY-ROCK CK 500 KV 0.85 -902 0.92 -2737 0.77 -1827 0.99 -1798 0.87 -2874 0.93 -1787 0.71 -598 0.76 -324 N-1: JOHN DAY-SLATT 500 KV 0.86 -932 0.91 -3142 0.76 -1827 0.98 -2006 0.86 -3092 0.93 -1938 0.70 -628 0.76 -345 N-1: KFALLS-MERIDIAN 500 KV 0.86 -934 0.92 -3205 0.76 -1863 0.98 -2210 0.83 -3184 0.94 -1561 0.70 -626 0.76 -343 N-1: KNIGHT-WAUTOMA 500 KV 0.85 -902 0.92 -2682 0.77 -1815 0.98 -1802 0.89 -2800 0.93 -1758 0.71 -599 0.76 -326 N-1: LAGRANDE-NORTH POWDER 230 KV 0.87 -914 0.91 -3268 0.76 -1887 0.98 -2247 0.86 -3105 0.93 -1979 0.70 -624 0.76 -342 N-1: LANES-MARION 500 KV 0.85 -940 0.92 -3164 0.76 -1876 0.98 -2149 0.87 -2968 0.94 -1759 0.70 -627 0.76 -344 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.86 -949 0.91 -3283 0.76 -1907 0.98 -2300 0.85 -3207 0.93 -2004 0.70 -629 0.76 -345 N-1: LIT GOOSE-LOW MON 500 KV 0.86 -947 0.91 -3249 0.76 -1904 0.98 -2287 0.85 -3183 0.93 -2000 0.70 -628 0.76 -344 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.86 -946 0.91 -3263 0.76 -1904 0.98 -2297 0.85 -3207 0.93 -2003 0.70 -626 0.76 -344 N-1: LOW MON-SAC TAP 500 KV 0.85 -939 0.92 -2824 0.77 -1885 0.98 -2149 0.85 -3070 0.93 -1907 0.71 -602 0.76 -324 N-1: MALIN 500/230 XFMR 0.86 -943 0.91 -3284 0.76 -1882 0.98 -2285 0.85 -3175 0.93 -1980 0.70 -629 0.76 -345 N-1: MALIN-HILLTOP 230 KV 0.86 -938 0.91 -3286 0.77 -1863 0.98 -2283 0.85 -3129 0.93 -1995 0.70 -627 0.76 -344 N-1: MALIN-ROUND MTN #1 500 KV 0.86 -910 0.92 -3135 0.77 -1778 0.98 -2076 0.85 -2589 0.93 -1887 0.71 -615 0.76 -335 N-1: MALIN-ROUND MTN #2 500 KV 0.86 -907 0.92 -3125 0.77 -1771 0.98 -2060 0.85 -2557 0.93 -1878 0.71 -615 0.76 -335 N-1: MALIN-SUMMER LAKE 500 KV 0.86 -940 0.92 -3101 0.76 -1739 0.98 -2039 0.83 -2718 0.93 -1814 0.70 -628 0.76 -344 N-1: MAPLE VLY-ROCKY RH 345 KV 0.86 -949 0.92 -3133 0.76 -1906 0.98 -2287 0.85 -3182 0.93 -2001 0.70 -629 0.76 -346 N-1: MARION-PEARL 500 KV 0.85 -936 0.91 -3153 0.77 -1861 0.98 -2106 0.87 -2833 0.92 -1384 0.70 -625 0.76 -343 N-1: MARION-SANTIAM 500 KV 0.86 -957 0.91 -3360 0.76 -1926 0.98 -2375 0.85 -3249 0.93 -2088 0.70 -632 0.76 -347 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.86 -951 0.91 -3292 0.76 -1910 0.98 -2292 0.85 -3194 0.93 -1963 0.70 -631 0.76 -347 N-1: MCNARY 500/230 KV XFMR 0.86 -892 0.91 -3325 0.77 -1884 0.98 -2363 0.85 -3251 0.93 -2005 0.70 -632 0.76 -347 N-1: MCNARY S2-MCNARY S3 230 KV 0.86 -950 0.91 -3267 0.76 -1908 0.98 -2312 0.85 -3213 0.93 -2007 0.70 -631 0.76 -347 N-1: MCNARY-BOARD T1 230 KV 0.85 -941 0.91 -3308 0.76 -1885 0.98 -2275 0.85 -3141 0.93 -1990 0.70 -629 0.76 -344 N-1: MCNARY-COYOTE-SLATT 500 KV 0.85 -946 0.92 -2950 0.77 -1953 0.98 -2169 0.87 -3207 0.93 -1974 0.70 -623 0.76 -341 N-1: MCNARY-JOHN DAY 500 KV 0.86 -903 0.92 -2987 0.77 -1826 0.98 -1926 0.88 -2929 0.93 -1859 0.70 -627 0.76 -344 N-1: MCNARY-ROSS 345 KV 0.86 -937 0.92 -3188 0.77 -1886 0.98 -2215 0.86 -3123 0.93 -1952 0.70 -630 0.76 -346 N-1: MCNARY-ROUNDUP 230 KV 0.88 -833 0.92 -3181 0.78 -1803 0.98 -2166 0.86 -3040 0.93 -1948 0.71 -615 0.76 -337 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.85 -935 0.92 -2772 0.77 -1879 0.98 -2094 0.87 -3035 0.93 -1894 0.71 -601 0.76 -324 N-1: MIDPOINT-HEMINGWAY 500 KV 0.88 -732 0.91 -3314 0.78 -1429 0.98 -2326 0.85 -2875 0.93 -1990 0.74 -482 0.78 -251 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN SHUNT 0.88 -740 0.91 -3340 0.77 -1439 0.98 -2776 0.85 -2891 0.93 -1997 0.74 -495 0.78 -255 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN & BORA SHUNT 0.88 -768 0.91 -3353 0.76 -1480 0.98 -2788 0.85 -2911 0.93 -2002 0.74 -501 0.78 -257 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN & BORA & MLCK SHUNT 0.88 -772 0.91 -3375 0.76 -1487 0.98 -2797 0.85 -2919 0.93 -2006 0.74 -522 0.78 -261 N-1: MIDPOINT-HUMBOLDT 345 KV 0.85 -1028 0.92 -3202 0.75 -1999 0.98 -2647 0.85 -2976 0.93 -1936 0.70 -639 0.76 -350 Page 391 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: NAPAVINE-PAUL 500 KV 0.86 -944 0.91 -3219 0.76 -1892 0.98 -2229 0.86 -3139 0.93 -1974 0.70 -626 0.76 -343 N-1: OLYMPIA-PAUL 500 KV 0.86 -953 0.91 -3352 0.76 -1915 0.98 -2345 0.85 -3232 0.93 -2029 0.70 -632 0.76 -347 N-1: ONTARIO-CALDWELL 230 KV 0.86 -905 0.91 -3273 0.77 -1788 0.98 -2268 0.85 -3148 0.93 -1992 0.70 -627 0.76 -344 N-1: OSTRANDER-KNIGHT 500 KV 0.85 -942 0.92 -3151 0.76 -1882 0.98 -2129 0.86 -3034 0.93 -1872 0.70 -628 0.76 -345 N-1: OSTRANDER-PEARL 500 KV 0.86 -949 0.91 -3260 0.76 -1901 0.98 -2224 0.84 -3185 0.93 -1983 0.70 -630 0.76 -346 N-1: OSTRANDER-TROUTDALE 500 KV 0.86 -953 0.91 -3273 0.76 -1912 0.98 -2273 0.86 -3156 0.93 -1970 0.70 -632 0.76 -347 N-1: OXBOW-BROWNLEE #2 230 KV 0.86 -937 0.91 -3302 0.77 -1893 0.98 -2304 0.85 -3205 0.93 -2005 0.70 -630 0.76 -346 N-1: OXBOW-LOLO 230 KV 0.87 -949 0.92 -3075 0.75 -1894 0.98 -2113 0.86 -2992 0.93 -1924 0.71 -610 0.76 -328 N-1: PAUL-SATSOP 500 KV 0.86 -949 0.91 -3253 0.76 -1907 0.98 -2283 0.85 -3177 0.93 -1987 0.70 -630 0.76 -346 N-1: PEARL-KEELER 500 KV + RAS 0.85 -993 0.93 -2889 0.76 -2027 0.98 -2259 0.86 -3373 0.93 -1905 0.70 -631 0.76 -361 N-1: PINTO-FOUR CORNER 345 KV 0.86 -956 0.91 -3288 0.76 -1919 0.98 -2301 0.85 -3182 0.93 -2001 0.70 -633 0.76 -349 N-1: PONDEROSA A 500/230 KV XFMR 0.86 -952 0.91 -3308 0.76 -1909 0.98 -2310 0.85 -3207 0.93 -2006 0.70 -631 0.76 -347 N-1: PONDEROSA B 500/230 KV XFMR 0.86 -950 0.91 -3309 0.76 -1907 0.98 -2312 0.85 -3210 0.93 -2008 0.70 -631 0.76 -346 N-1: RAVER-PAUL 500 KV 0.86 -921 0.92 -2633 0.77 -1849 0.98 -1994 0.86 -2979 0.93 -1904 0.71 -606 0.76 -333 N-1: RAVER-TACOMA 500 KV 0.86 -950 0.91 -3196 0.76 -1908 0.98 -2294 0.85 -3197 0.93 -2002 0.70 -630 0.76 -346 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.85 -965 0.91 -3269 0.76 -1946 0.98 -2263 0.85 -3112 0.93 -1978 0.70 -639 0.76 -355 N-1: ROBINSON-HARRY ALLEN 500 KV 0.86 -912 0.91 -3303 0.77 -1780 0.98 -2312 0.85 -3227 0.93 -2016 0.70 -625 0.76 -344 N-1: ROCK CK-WAUTOMA 500 KV 0.85 -902 0.92 -2656 0.77 -1826 0.99 -1807 0.87 -2872 0.93 -1779 0.71 -593 0.76 -323 N-1: ROUND MTN-TABLE MTN 500 KV 0.86 -925 0.92 -3184 0.77 -1831 0.98 -2182 0.85 -2843 0.93 -1943 0.70 -620 0.76 -339 N-1: ROUNDUP-LAGRANDE 230 KV 0.87 -901 0.92 -3201 0.76 -1871 0.98 -2199 0.86 -3071 0.93 -1961 0.70 -620 0.76 -339 N-1: SCHULTZ-SICKLER 500 KV 0.86 -946 0.92 -2988 0.76 -1905 0.98 -2255 0.86 -3164 0.93 -1991 0.70 -620 0.76 -343 N-1: SCHULTZ-VANTAGE 500 KV 0.86 -951 0.91 -3112 0.76 -1909 0.98 -2264 0.85 -3172 0.93 -1986 0.70 -623 0.76 -342 N-1: SCHULTZ-WAUTOMA 500 KV 0.86 -937 0.91 -2906 0.77 -1888 0.98 -2112 0.87 -3059 0.93 -1918 0.71 -605 0.76 -334 N-1: SIGURD-GLEN CANYON 230 KV 0.86 -950 0.91 -3309 0.76 -1907 0.98 -2313 0.85 -3211 0.93 -2009 0.70 -630 0.76 -346 N-1: SLATT 500/230 KV XFMR 0.85 -989 0.92 -3034 0.76 -2022 0.98 -2360 0.85 -3429 0.93 -2058 0.70 -628 0.76 -357 N-1: SNOK TAP-SNOKING 500 KV 0.86 -951 0.91 -3242 0.76 -1910 0.98 -2309 0.85 -3213 0.93 -2008 0.70 -630 0.76 -346 N-1: TABLE MTN-TESLA 500 KV 0.86 -927 0.91 -3216 0.77 -1839 0.98 -2221 0.85 -2919 0.93 -1963 0.70 -619 0.76 -338 N-1: TABLE MTN-VACA DIXON 500 KV 0.86 -912 0.92 -3161 0.77 -1795 0.98 -2147 0.85 -2698 0.93 -1924 0.71 -614 0.76 -334 N-1: VANTAGE 500/230 KV XFMR #1 0.86 -950 0.91 -3319 0.76 -1910 0.98 -2313 0.85 -3214 0.93 -2010 0.70 -631 0.76 -346 N-1: VANTAGE 500/230 KV XFMR #2 0.86 -950 0.91 -3318 0.76 -1910 0.98 -2313 0.85 -3214 0.93 -2010 0.70 -631 0.76 -346 N-1: WALLA WALLA-TALBOT 230 KV 0.86 -958 0.91 -3240 0.76 -1908 0.98 -2287 0.85 -3180 0.93 -1998 0.70 -625 0.76 -342 N-1: WALLA WALLA-WALLULA 230 KV 0.86 -939 0.91 -3290 0.76 -1909 0.98 -2304 0.85 -3202 0.93 -2006 0.70 -629 0.76 -346 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.86 -832 0.94 -1834 0.79 -1687 0.99 -1084 0.93 -2132 0.94 -1241 0.73 -552 0.77 -297 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.86 -883 0.94 -2378 0.77 -1733 0.99 -1349 0.90 -2331 0.93 -1130 0.71 -603 0.76 -330 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.86 -812 0.95 -1929 0.79 -1544 0.99 -940 0.93 -1922 0.94 -1121 0.72 -576 0.77 -312 N-2: ASHE-MARION & SLATT-COYOTE-MCNARY 500 KV 0.85 -886 0.94 -2259 0.78 -1819 0.99 -1416 0.91 -2556 0.93 -1505 0.71 -600 0.76 -327 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.86 -872 0.94 -2421 0.78 -1685 0.99 -1346 0.91 -2475 0.93 -1459 0.71 -600 0.76 -328 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.85 -856 0.92 -2353 0.79 -1772 0.99 -1499 0.90 -2594 0.94 -1583 0.72 -587 0.77 -318 N-2: ASHE-SLATT & SLATT-COYOTE-MCNARY 500 KV 0.85 -860 0.93 -1979 0.79 -1870 0.99 -1457 0.91 -2656 0.94 -1543 0.72 -586 0.77 -317 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.86 -1030 0.92 -3044 0.75 -2051 0.98 -2574 0.84 -3548 0.93 -2131 0.81 -370 0.78 -247 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.86 -945 0.92 -3190 0.76 -1889 0.98 -2165 0.86 -3076 0.94 -1767 0.70 -630 0.76 -346 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.86 -948 0.92 -3215 0.76 -1895 0.98 -2188 0.86 -3117 0.93 -1885 0.70 -631 0.76 -347 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.85 -679 0.92 -3122 0.81 -1382 0.98 -2103 0.86 -2935 0.93 -1916 0.71 -609 0.76 -331 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.85 -678 0.92 -3120 0.81 -1375 0.98 -2099 0.87 -2916 0.93 -1914 0.71 -609 0.76 -331 N-2: BRIDGER-POPULUS #1 & #2 345 KV + RAS 0.88 -741 0.93 -2546 0.82 -1282 0.98 -1823 0.89 -2715 0.93 -1783 0.71 -538 0.76 -338 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV + RAS 0.88 -688 0.94 -2461 0.86 -1069 0.98 -1755 0.89 -2625 0.93 -1746 0.72 -497 0.76 -335 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.84 -1050 0.90 -3726 0.74 -2140 0.98 -3302 0.82 -3897 0.93 -2282 0.70 -710 0.78 -468 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.86 -845 0.94 -2589 0.77 -1631 0.98 -1650 0.90 -2451 0.93 -1677 0.72 -566 0.77 -298 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.86 -806 0.92 -3003 0.79 -1711 0.98 -2017 0.87 -2898 0.93 -1883 0.71 -600 0.76 -327 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.86 -925 0.93 -2872 0.76 -1820 0.98 -1844 0.87 -2724 0.93 -1145 0.70 -625 0.76 -345 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.86 -941 0.93 -2625 0.77 -1888 0.98 -2173 0.86 -3129 0.93 -1967 0.71 -608 0.76 -338 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.86 -944 0.93 -2799 0.76 -1893 0.98 -2220 0.86 -3140 0.93 -1979 0.70 -620 0.76 -343 Page 392 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.86 -946 0.93 -2915 0.76 -1901 0.98 -2246 0.86 -3152 0.93 -1989 0.70 -624 0.76 -344 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.86 -946 0.92 -2936 0.76 -1900 0.98 -2252 0.86 -3154 0.93 -1988 0.71 -617 0.76 -341 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.86 -948 0.91 -3021 0.76 -1904 0.98 -2264 0.85 -3172 0.93 -1992 0.70 -625 0.76 -345 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.85 -919 0.91 -2381 0.77 -1891 0.99 -1958 0.88 -3030 0.93 -1854 0.74 -537 0.77 -307 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.85 -919 0.95 -1613 0.77 -1849 0.98 -1936 0.88 -2951 0.93 -1856 0.74 -541 0.77 -310 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.86 -949 0.93 -2989 0.76 -1910 0.98 -2294 0.85 -3218 0.93 -2007 0.71 -617 0.76 -343 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.85 -1080 0.90 -3892 0.74 -2234 0.97 -3208 0.80 -4227 0.92 -2466 0.70 -674 0.75 -395 N-2: DC-BIPOLE 0.86 -850 0.92 -3301 0.78 -1623 0.96 -2439 0.86 -2361 0.93 -1976 0.71 -596 0.76 -337 N-2: DOUBLE PALO VERDE 0.87 -490 0.95 -1007 0.80 -1565 0.99 -1222 0.94 -2112 0.95 -1445 0.76 -479 0.77 -284 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.86 -952 0.91 -3154 0.76 -1911 0.98 -2727 0.85 -3210 0.93 -2008 0.70 -631 0.76 -347 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.86 -950 0.92 -2993 0.76 -1908 0.98 -2260 0.85 -3179 0.93 -1997 0.70 -630 0.76 -346 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.86 -997 0.91 -3323 0.75 -2023 0.98 -2541 0.84 -3514 0.93 -2120 0.76 -556 0.74 -451 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV + RAS 0.85 -965 0.91 -3533 0.76 -1912 0.98 -2443 0.79 -3027 0.93 -1927 0.70 -657 0.75 -387 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV + RAS 0.86 -927 0.91 -3578 0.76 -1853 0.98 -2501 0.78 -3253 0.93 -2015 0.70 -643 0.76 -376 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV + RAS 0.85 -1068 0.87 -4404 0.74 -2007 0.98 -2721 0.77 -3130 0.93 -2063 0.70 -682 0.75 -405 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.86 -950 0.89 -2236 0.76 -1907 0.98 -2219 0.86 -3138 0.93 -1972 0.71 -614 0.76 -341 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.86 -913 0.89 -2723 0.77 -1843 0.98 -2042 0.87 -3017 0.93 -1880 0.71 -613 0.76 -333 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.86 -968 0.94 -2897 0.76 -1906 0.93 -2151 0.86 -2994 0.93 -1798 0.70 -641 0.76 -355 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.85 -937 0.93 -3037 0.76 -1861 0.97 -2479 0.87 -2929 0.93 -1588 0.70 -628 0.76 -346 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV + RAS 0.86 -899 0.93 -3107 0.78 -1815 0.98 -2011 0.84 -2908 0.93 -1730 0.70 -629 0.76 -361 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV + RAS 0.85 -997 0.91 -3417 0.75 -2048 0.98 -2903 0.80 -3591 0.93 -2076 0.70 -657 0.75 -384 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.86 -925 0.93 -2872 0.76 -1820 0.98 -1844 0.87 -2724 0.93 -1145 0.70 -625 0.76 -345 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.86 -911 0.92 -2869 0.77 -1791 0.98 -1825 0.89 -2450 0.92 -925 0.71 -615 0.76 -338 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.86 -889 0.92 -2670 0.78 -1805 0.99 -2127 0.89 -2804 0.93 -1729 0.71 -597 0.76 -323 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.85 -939 0.93 -3035 0.76 -1869 0.99 -1895 0.86 -2929 0.94 -1634 0.70 -629 0.76 -346 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.85 -928 0.93 -3017 0.77 -1860 0.99 -1937 0.86 -2953 0.93 -1796 0.70 -628 0.76 -345 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.85 -932 0.92 -3020 0.77 -1861 0.98 -2051 0.86 -2975 0.93 -1845 0.70 -624 0.76 -342 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 + RAS 0.85 -974 0.91 -3296 0.76 -2038 0.98 -2632 0.83 -3643 0.93 -2163 0.70 -740 0.77 -387 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.85 -1002 0.90 -3935 0.76 -1899 0.97 -2974 0.80 -2351 0.93 -2276 0.70 -667 0.75 -379 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.86 -836 0.93 -2335 0.79 -1704 0.99 -1765 0.91 -2473 0.94 -1516 0.72 -583 0.77 -314 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.85 -886 0.92 -2859 0.78 -1797 0.98 -1849 0.87 -2873 0.93 -1804 0.70 -622 0.76 -340 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.85 -885 0.93 -2830 0.78 -1794 0.98 -1807 0.88 -2817 0.93 -1780 0.70 -622 0.76 -341 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.86 -925 0.92 -3129 0.77 -1871 0.98 -2145 0.86 -3073 0.93 -1925 0.70 -629 0.76 -345 N-2: MIDPOINT-HEMINGWAY 500 KV & MIDPOINT-KING 230 KV 0.89 -663 0.92 -3187 0.78 -1303 0.98 -2179 0.86 -2702 0.93 -1925 0.75 -460 0.79 -227 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.85 -945 0.93 -2698 0.76 -1900 0.98 -2648 0.86 -3149 0.93 -1981 0.71 -614 0.76 -341 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.85 -976 0.95 -1502 0.77 -2002 1.00 -1134 0.94 -2595 0.96 -1289 0.72 -576 0.76 -356 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.85 -976 0.95 -1495 0.77 -2003 1.00 -1149 0.94 -2624 0.96 -1312 0.72 -575 0.76 -356 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.86 -920 0.93 -2577 0.77 -1848 0.98 -1981 0.86 -2976 0.93 -1903 0.71 -606 0.76 -333 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV + RAS 0.85 -994 0.93 -2891 0.76 -2028 0.98 -2258 0.85 -3351 0.93 -1901 0.70 -631 0.76 -361 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.86 -948 0.91 -3227 0.76 -1899 0.99 -2086 0.86 -3159 0.93 -1946 0.70 -630 0.76 -346 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.86 -948 0.92 -3229 0.76 -1899 0.98 -2217 0.86 -3144 0.93 -1889 0.70 -631 0.76 -346 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.86 -953 0.91 -3219 0.76 -1914 0.98 -2322 0.85 -3224 0.93 -2018 0.70 -633 0.76 -347 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.86 -945 0.92 -3033 0.76 -1898 0.98 -2243 0.86 -3150 0.93 -1992 0.70 -624 0.76 -344 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.85 -918 0.93 -2603 0.77 -1844 0.98 -1960 0.87 -2932 0.93 -1880 0.71 -604 0.76 -332 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.85 -959 0.95 -2304 0.76 -1950 0.98 -2118 0.86 -3242 0.93 -2017 0.71 -612 0.76 -347 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.85 -958 0.94 -2470 0.76 -1947 0.98 -2143 0.85 -3266 0.93 -2022 0.70 -615 0.76 -348 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.85 -938 0.93 -2679 0.76 -1876 0.98 -2116 0.85 -3056 0.93 -1952 0.71 -619 0.76 -342 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.86 -950 0.92 -3130 0.76 -1908 0.98 -2284 0.85 -3194 0.93 -2002 0.70 -630 0.76 -346 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.86 -949 0.91 -3169 0.76 -1906 0.98 -2287 0.85 -3181 0.93 -1999 0.70 -629 0.76 -346 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV + RAS 0.85 -1045 0.88 -4321 0.75 -2010 0.97 -3383 0.79 -2765 0.92 -2559 0.70 -680 0.75 -385 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV + RAS 0.84 -1115 0.88 -3505 0.73 -2326 0.97 -3312 0.80 -4454 0.92 -2507 0.70 -665 0.75 -398 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV + RAS 0.85 -1010 0.91 -3194 0.75 -2058 0.98 -2604 0.83 -3630 0.93 -2159 0.70 -641 0.76 -365 Page 393 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.85 -1063 0.93 -2931 0.74 -2191 0.98 -2771 0.82 -3513 0.93 -2237 0.70 -654 0.75 -398 N-2: TAFT-BELL 500 KV & BELL-LANCASTER 230 KV 0.8547 -949 0.92 -3129 0.76 -1908 0.98 -2733 0.85 -3209 0.93 -2004 0.74 -546 0.76 -342 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.8551 -955 0.92 -3075 0.76 -1917 0.98 -2293 0.85 -3181 0.93 -1997 0.72 -593 0.76 -358 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV 0.8547 -949 0.92 -3129 0.76 -1908 0.98 -2300 0.85 -3209 0.93 -2004 0.74 -546 0.76 -342 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.8549 -953 0.92 -3150 0.76 -1912 0.98 -2288 0.85 -3173 0.93 -1995 0.72 -592 0.76 -356 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV 0.8549 -952 0.92 -3155 0.76 -1911 0.98 -2290 0.85 -3174 0.93 -1996 0.73 -580 0.76 -354 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.8569 -979 0.92 -2926 0.76 -1935 0.98 -2298 0.85 -3216 0.93 -2000 0.75 -509 0.78 -279 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.8511 -888 0.92 -2546 0.78 -1802 0.98 -1786 0.89 -2803 0.93 -1733 0.72 -583 0.77 -317 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.8511 -888 0.92 -2546 0.78 -1802 0.98 -1786 0.89 -2803 0.93 -1733 0.72 -583 0.77 -317 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.8539 -934 0.93 -2512 0.77 -1868 0.98 -2060 0.87 -3024 0.93 -1935 0.71 -615 0.76 -341 Page 394 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E11: N-1 Loss of Hemingway-Boardman 500 kV (Angle & Voltage Plots) Page 395 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E12: N-1 Loss of Hemingway-Midpoint 500 kV (Angle & Voltage Plots) Page 396 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E13: N-1 Loss of Captain Jack-Olinda 500 kV (Angle & Voltage Plots) Page 397 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E14: N-1 Loss of Table Mtn-Tesla 500 kV (Angle & Voltage Plots) Page 398 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E15: N-1 Loss of Table Mt-Vaca Dixon 500 kV (Angle & Voltage Plots) Page 399 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E16: N-1 Loss of Grizzly-Captain Jack 500 kV (Angle & Voltage Plots) Page 400 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E17: N-1 Loss of John Day-Grizzly #1 500 kV (Angle & Voltage Plots) Page 401 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E18: N-1 Loss of Buckley-Grizzly 500 kV (Angle & Voltage Plots) Page 402 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E19: N-1 Loss of Buckley-Slatt 500 kV (Angle & Voltage Plots) Page 403 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E20: N-1 Loss of Ashe-Slatt 500 kV (Angle & Voltage Plots) Page 404 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E21: Bi-Pole Block - Pacific DC Intertie (Angle & Voltage Plots) Page 405 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E22: Breaker Failure Loss of Hemingway-Boardman & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 406 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E23: Breaker Failure Loss of Midpoint-Hemingway & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 407 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E24: N-2 Loss of Brownlee-Hells Canyon & Oxbow-Lolo 230 kV (Angle & Voltage Plots) Page 408 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E25: N-2 Loss of Malin-Round Mt #1 & #2 500 kV (Angle & Voltage Plots) Page 409 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E26: N-2 Loss of Table Mt-Tesla & Table Mt-Vaca Dixon 500 kV (Angle & Voltage Plots) Page 410 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E27: N-2 Loss of Grizzly-Captain Jack & Grizzly-Malin 500 kV (Angle & Voltage Plots) Page 411 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E28: N-2 Loss of Grizzly-Malin & Grizzly-Summer Lake 500 kV Lines (Angle & Voltage Plots) Page 412 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E29: N-2 Loss of John Day-Grizzly #1 & #2 500 kV (Angle & Voltage Plots) Page 413 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E30: N-2 Loss of John Day-Grizzly #2 & Buckley-Grizzly 500 kV Lines (Angle & Voltage Plots) Page 414 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E31: N-2 Loss of Two Palo Verde Units (Angle & Voltage Plots) Page 415 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E32: N-2 Loss of Ashe-Slatt & Ashe-Marion 500 kV (Angle & Voltage Plots) Page 416 of 776 Appendix E – 16hs2a_2250idnw_solo Base Case Transient Stability Plots Figure E33: N-2 Loss of Slatt-Ashe & Slatt-McNary 500 kV Lines (Angle & Voltage Plots) Page 417 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Locust 138 Ptrsnflt 230 Locust 138 Bridger2 22.0 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV Var 13.0% 0.849 13.0% 59.874 Damped Hemingway 500 kV N-1 Wood Rvr 138 Ptrsnflt 230 Wood Rvr 138 Bridger3 22.0 Stable & 3 Cy 3PH Hemingway-Midpoint 500 kV None 15.4% 0.819 15.4% 59.828 Damped Hemingway 500 kV N-1 Var FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Mtshasta 69 Yuba 69 Mtshasta 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Captain Jack-Olinda 500 kV 16.4% 0.794 16.4% 59.834 Damped Capt Jack 500 kV 90 Insert Table Rock C1&C2 N-1 Highwnds 34.5 Plainfld 60 Plainfld 60 Honeylke 9.1 Stable & 4 Cy 3PH Table Mt-Tesla 500 kV None 9.9% 0.817 13.8% 59.805 Damped Table Mt 500 kV N-1 Highwnds 34.5 Plainfld 60 Plainfld 60 Honeylke 9.1 Stable & 4 Cy 3PH Table Mt-Vaca Dixon 500 kV None 14.4% 0.817 13.8% 59.791 Damped Table Mt 500 kV N-1 FACRI insertion of Malin Shunt Cap C1 & Capt Jack Shunt Cap C1 Northcst 69 Yuba 69 Northcst 69 Boyle 1 11.0 Stable & 4 Cy 3PH Grizzly-Captain Jack 500 kV Var 18.1% 0.786 18.1% 59.850 Damped Capt Jack 500 kV N-1 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1&C2 & Capt Jack Shunt Cap C1 Northcst 69 Northcst 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH John Day-Grizzly #1 500 kV Var 24.4% 0.739 24.4% 59.732 Damped John Day 500 kV Less Than 20 cycles N-1 FACRI insertion of Ft Rock Series Caps Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Buckley-Grizzly 500 kV Var 13.7% 0.831 13.7% 59.849 Damped Buckley 500 kV N-1 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 , & Capt Jack Shunt Cap C1 Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Slatt-Buckley 500 kV Var 17.9% 0.794 17.9% 59.780 Damped Slatt 500 kV N-1 FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Ashe-Slatt 500 kV Var 13.1% 0.834 13.1% 59.814 Damped Ashe 500 kV Page 418 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments FACRI insertion of Ft Rock Series Caps and Malin Shunt Cap C1 Dwor 1 13.8 Lwis Anm 69 Yorkcany 69 Sync_g19 13.8 Stable & Bi-pole Block PDCI Bipole Var 7.9% 0.829 7.5% 59.762 Damped Tracy&Olinda React Switching NW 2550 MW Gen Drop Breaker Failure Hemingway-Grassland 500 kV FACRI insertion of Ft Rock Series Caps Bowmont 138 Locust 138 Heminway 230 Bridger2 22.0 Stable & 3/10 Cy SLG Hemingway 500/230 Xfmr Var 15.1% 0.852 15.5% 59.872 Damped Hemingway 500 kV Breaker Failure Hemingway-Midpoint 500 kV FACRI insertion of Ft Rock Series Caps & Malin C1 Luckypk2 13.8 Luckypk2 13.8 Ptrsnfrg 69.0 Luckypk1 13.8 Stable & 3/10 Cy SLG Hemingway 500/230 Xfmr 51.5% 0.490 28.6% 59.782 Damped Hemingway 500 kV NOT A CREDIBLE CONTINGENCY N-2 Brownlee-Hells Canyon 230 kV Tripped 1 Hells Cyn Unit (110 MW) Locust 138 Ptrsnflt Elkhrn_w 34.5 Oxbow1-2 13.8 Stable & 4 Cy LLG Oxbow-Lolo 230 kV 5 10.0% 0.892 11.3% 59.753 Damped Oxbow 230 kV N-2 Malin-Round Mt #1 500 kV Chief Jo Braking Resistor Mtshasta 69 Yuba Mtshasta 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Malin-Round Mt #2 500 kV Var Tracy&Olinda React Switching 15.8% 0.805 15.8% 59.750 Damped Round Mt-Table Mt #2 500 kV NW 2400 MW Gen Drop Malin 500 kV Flash Malin-Round Mt S-Caps N-2 Table Mt-Tesla 500 kV FACRI insert Ft Rock Series Caps Plainfld 60 Plainfld 60 Highwnds 34.5 Honeylke 9.1 Stable & 4 Cy 3PH Table Mt-Vaca Dixon 500 kV Chief Jo Braking Resistor 14.0% 0.815 15.1% 59.610 Damped Tracy&Olinda React Switching Table Mt 500 kV NW 2400 MW Gen Drop N-2 Grizzly-CaptJack 500 kV FACRI insertion of Malin C1 and CaptJack C1 Shunt Capacitors Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Grizzly-Malin 500 kV Var 20.7% 0.771 20.7% 59.672 Damped Grizzly 500 kV NW 2400 MW Gen Drop Less Than 40 cycles N-2 Grizzly-Malin 500 kV FACRI insertion of Malin C1 and CaptJack C1 Shunt Capacitors Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Grizzly-Summer Lake 500 kV Var 20.4% 0.774 20.4% 59.662 Damped Grizzly 500 kV NW 2400 MW Gen Drop Less Than 40 cycles Page 419 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-2 FACRI insert Ft Rock Series Caps, Malin C1&C2, CaptJack C1 Northcst 69 Big Clif 14.4 Big Clif 14.4 Sync_g19 13.8 Stable & 4 Cy 3PH John Day-Grizzly #1&#2 500 kV Var 24.3% 0.701 29.8% 59.581 Damped John Day 500 kV NW 2400 MW Gen Drop Less Than 40 cycles N-2 John Day-Grizzly #2 500 kV FACRI insert Ft Rock Series Caps, Malin C1, CaptJack C1 Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Buckley-Grizzly 500 kV Var 19.7% 0.781 19.7% 59.632 Damped Grizzly 500 kV NW 2400 MW Gen Drop N-2 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1&C2 & CaptJack Sh Cap C1 Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Sync_g19 13.8 Stable & Loss of 2 Palo Verde units Var 12.3% 0.837 12.3% 59.755 Damped N-2 Ashe-Slatt 500 kV FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 & CaptJack Sh Cap C1 Sheridan 59.8 Stayton 69 Sheridan 59.8 Kmo 13g6 13.8 Stable & 4 Cy 3PH Ashe-Marion 500 kV Var 12.9% 0.825 12.9% 59.806 Damped Ashe 500 kV N-2 Slatt-Ashe 500 kV FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 & CaptJack Sh Cap C1 Northcst 69 Goldhill 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Slatt-McNary 500 kV Var 17.9% 0.794 17.9% 59.780 Damped Slatt 500 kV Page 420 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Bus COYOTE_500.0 (43123) BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Bus COYO S1_ 13.8 (43119) BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Bus COYO G1_ 18.0 (43111) BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Bus COYO M2_ 1.0 (48519) BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Bus COYO S2_ 13.8 (48518) BF 4231 McNary-Coyote-Slatt 500 kV & McNary 500/230 kV Xfmr OPEN Bus COYO G2_ 18.0 (48516) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus COYOTE_500.0 (43123) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 4234 McNary-Coyote-Slatt & McNary-Hermcalp 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 Page 421 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 Page 422 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_500.0 (40521) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_230.0 (40519) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line NPULLMAN_115.0 (48291) TO SHAWNEE_115.0 (48383) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCITYT_115.0 (48245) TO SPULLMAN_115.0 (48413) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS HOT SPR_500.0 (40553) TO -148.3 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4700 Hatwai 500kV & 230 kV + RAS CLOSE Line LEON_115.0 (48183) TO MOSCCITY_115.0 (48243) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCCITY_115.0 (48243) TO MOSCITYT_115.0 (48245) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS N LEWIST_115.0 (48253) TO 44.4 MVR BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5006 Slatt-Coyote-McNary & Slatt-Grassland 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 Page 423 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5021 Slatt-John Day & Slatt-Coyote-McNary 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) Page 424 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 2 SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) BF McNary 230 kV SECT 3 SET SWITCHED SHUNT AT BUS ECHO OWF_ 34.5 (44890) TO 6 MVR BF McNary 230 kV SECT 3 CLOSE Shunt 9CWIND 2_ 34.5 (47316) #ZS BF McNary 230 kV SECT 3 SET SWITCHED SHUNT AT BUS 9CWIND 2_ 34.5 (47316) TO 10.6 MVR BF McNary 230 kV SECT 3 CLOSE Shunt 9CWIND 1_ 34.5 (47315) #ZS BF McNary 230 kV SECT 3 SET SWITCHED SHUNT AT BUS 9CWIND 1_ 34.5 (47315) TO 10.6 MVR Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 Page 425 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 Page 426 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Horse Hv-McNary 230 kV SET SWITCHED SHUNT AT BUS HARVALUM_230.0 (40511) TO 40.7 MVR N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Coyote-Slatt 500 kV OPEN Bus COYOTE_500.0 (43123) N-1: McNary-Coyote-Slatt 500 kV OPEN Bus COYO S1_ 13.8 (43119) N-1: McNary-Coyote-Slatt 500 kV OPEN Bus COYO G1_ 18.0 (43111) N-1: McNary-Coyote-Slatt 500 kV OPEN Bus COYO M2_ 1.0 (48519) N-1: McNary-Coyote-Slatt 500 kV OPEN Bus COYO S2_ 13.8 (48518) N-1: McNary-Coyote-Slatt 500 kV OPEN Bus COYO G2_ 18.0 (48516) N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS OREBASIN_ 34.5 (66146) TO 20 MVR N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS OREBASIN_ 34.5 (66146) TO 20 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt SET SWITCHED SHUNT AT BUS OREBASIN_ 34.5 (66146) TO 20 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt CLOSE Shunt BORAH_345.0 (60060) #1 N-1: Midpoint-Hemingway 500 kV + PTSN & BORA Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR Page 427 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt CLOSE Shunt MILLCKT2_ 13.8 (62333) #1 N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt CLOSE Shunt MILLCKT1_ 13.8 (62332) #1 N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt SET SWITCHED SHUNT AT BUS OREBASIN_ 34.5 (66146) TO 20 MVR N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt CLOSE Shunt BORAH_345.0 (60060) #1 N-1: Midpoint-Hemingway 500 kV + PTSN & BORA & MLCK Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN OPEN Line ADELAIDE_345.0 (60006) TO MIDPOINT_345.0 (60235) CKT 2 N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus COYOTE_500.0 (43123) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus COYO S1_ 13.8 (43119) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus COYO G1_ 18.0 (43111) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus COYO M2_ 1.0 (48519) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus COYO S2_ 13.8 (48518) N-2: Ashe-Marion & Slatt-Coyote-McNary 500 kV OPEN Bus COYO G2_ 18.0 (48516) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 Page 428 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Bus COYOTE_500.0 (43123) N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Bus COYO S1_ 13.8 (43119) N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Bus COYO G1_ 18.0 (43111) N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Bus COYO M2_ 1.0 (48519) N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Bus COYO S2_ 13.8 (48518) N-2: Ashe-Slatt & Slatt-Coyote-McNary 500 kV OPEN Bus COYO G2_ 18.0 (48516) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN Gen BRIDGER1_ 22.0 (60086) #1 N-2: Bridger-Populus #1 & #2 345 kV + RAS SET LOAD AT BUS BRIDGER1_ 22.0 (60086) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #1 & #2 345 kV + RAS OPEN Gen BRIDGER2_ 22.0 (60087) #1 N-2: Bridger-Populus #1 & #2 345 kV + RAS SET LOAD AT BUS BRIDGER2_ 22.0 (60087) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI21_345.0 (61967) CKT 2 TO -0.017307 pu N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI11_345.0 (61968) CKT 1 TO -0.017307 pu N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SERIES CAP REACTANCE AT BRI3MI11_345.0 (61999) TO 3MIKNOLL_345.0 (60084) CKT 1 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV + RAS CLOSE Shunt BORAH_345.0 (60060) #1 N-2: Bridger-Populus #1 & #2 345 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN Gen BRIDGER1_ 22.0 (60086) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET LOAD AT BUS BRIDGER1_ 22.0 (60086) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS OPEN Gen BRIDGER2_ 22.0 (60087) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET LOAD AT BUS BRIDGER2_ 22.0 (60087) TO 60 % of present MW (cnst pf) N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI21_345.0 (61967) CKT 2 TO -0.017307 pu N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SERIES CAP REACTANCE AT POPULUS_345.0 (67790) TO POPBRI11_345.0 (61968) CKT 1 TO -0.017307 pu N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS SET SERIES CAP REACTANCE AT BRI3MI11_345.0 (61999) TO 3MIKNOLL_345.0 (60084) CKT 1 TO 50 % of present N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV + RAS CLOSE Shunt BORAH_345.0 (60060) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) Page 429 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei Page 430 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS SPRINGER_115.0 (12077) TO 20 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Double Palo Verde OPEN Shunt NIC 500_500.0 (50703) #v N-2: Double Palo Verde OPEN Shunt CKY 500_500.0 (50045) #v N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 Page 431 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Load MILCTYDC_230.0 (63010) #D1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 Page 432 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 Page 433 of 776 Appendix E - 16hs2a_2250idnw_solo Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Shunt NIC 500_500.0 (50703) #v N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF IPC Midpoint-Hem 500 kV & Hem 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hem 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR Page 434 of 776 Appendix F 16hs2a_2250idnw_nww Base Case (Walla Walla Area, 100% Wind) Page 435 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F1: 16hs2sa_2250idnw_N_nww Case Pre-Contingency 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 223.8 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 5 M W - 1 3 1 M v a r 1 4 9 3 M W - 1 6 5 M v a r 1 7 0 8 M W - 2 1 4 M v a r 1590 MW -159 Mvar 288 MW 65 Mvar 252 MW 61 Mvar 249 MW 70 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD447.1 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.00 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.4 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.98 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 8 0 M W - 4 2 M v a r 1 7 3 5 M W - 1 0 0 M v a r 1763 MW -79 Mvar 1767 MW -82 Mvar 443 MW -34 Mvar 886 MW 15 Mvar 1586 MW -122 Mvar 1110 MW -82 Mvar 946 MW -105 Mvar 100 MW -29 Mvar 1098 MW -178 Mvar 1268 MW 144 Mvar 173 MW 178 Mvar 5 0 1 M W 2 M v a r 173 MW 108 Mvar 402 MW -21 Mvar 844 MW 175 Mvar 159 MW -6 Mvar 150 MW -11 Mvar 751 MW 68 Mvar 1.05 puANTICLIN 376 MW 4 Mvar 376 MW 2 Mvar 20 MW 118 Mvar 19 MW 100 Mvar 321 MW 37 Mvar 402 MW -21 Mvar 179 MW -1 Mvar 255 MW 74 Mvar 588 MW -85 Mvar 155 MW -36 Mvar 2 MW -60 Mvar 12 MW 65 Mvar 582 MW 161 Mvar 545 MW 37 Mvar 659 MW -256 Mvar 1108 MW -132 Mvar 204 MW -37 Mvar 131 MW -25 Mvar 160 MW -24 Mvar 181 MW -41 Mvar 24 MW -28 Mvar 2 6 0 M W 1 0 M v a r 12 MW 45 Mvar 219 MW -69 Mvar 165 MW -97 Mvar 144 MW -70 Mvar 160 MW -64 Mvar 161 MW -70 Mvar 4 6 8 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 94.8 Mvar 0.0 Mvar 1.01 puONTARIO 24 MW -28 Mvar 79 MW 2 Mvar 280 MW 62 Mvar 3 1 4 M W - 4 9 M v a r 62 MW -3 Mvar 389 MW -57 Mvar 305 MW -14 Mvar 305 MW -14 Mvar 315 MW -20 Mvar 318 MW -40 Mvar 199 MW -53 Mvar 257 MW -65 Mvar 1 9 M W 4 6 M v a r 1 9 M W 4 5 M v a r 1117 MW -113 Mvar 825 MW 85 Mvar 147 MW 18 Mvar 568 MW -67 Mvar 582 MW -11 Mvar 541 MW -46 Mvar 485 MW 16 Mvar 463 MW -2 Mvar 454 MW -2 Mvar 525 MW -17 Mvar 538 MW -19 Mvar 854 MW -113 Mvar 2 6 0 M W 1 2 0 M v a r 1152 MW -131 Mvar 1 5 0 1 M W 9 M v a r 1 4 6 6 M W 3 7 M v a r 1 3 3 4 M W 1 M v a r 1335 MW -119 Mvar ID-NW = -2250 MW Grassland = -1374 MW Summer Lake = -249 MW Lolo = -314 MW Walla Walla = -199 MW LaGrande = -131 MW Midpoint West = -1646 MW Borah West = -325 MW Idaho-Sierra = 501 MW N of John Day = 7800 MW COI = 4650 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 4543 MW W of Slatt = 4894 MW Alturas Project = 150 MW Path C = -1602 MW Montana Southeast = 599 MW TOT 2B1 = 70 MW TOT 2C = 195 MW 249 MW -75 Mvar 127 MW 47 Mvar 990 MW -6 Mvar 1099 MW 13 Mvar 37 M W 86 M v a r 9 8 8 M W - 1 2 4 M v a r 1 3 7 4 M W 1 7 7 M v a r 1320 MW -293 Mvar Page 436 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F2: 16hs2sa_2250idnw_N_nww Case N-1: Hemingway-Grassland 500 kV + PTSN Shunt 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 449.6 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 7 8 M W - 1 1 6 M v a r 1 6 5 2 M W - 1 4 8 M v a r 2 2 0 1 M W - 2 4 1 M v a r 2112 MW -232 Mvar 407 MW 54 Mvar 356 MW 54 Mvar 1004 MW -258 Mvar 1.02 puHEMINWAY 1.07 pu JOHN DAY 436.0 Mvar 1.07 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.8 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD442.9 Mvar 1.07 puCDR SPRG 1.06 puBUCKLEY 1.00 puLAGRANDE 51.9 Mvar 1.03 puHAT ROCK 0.99 puWALAWALA 0.0 Mvar 1.00 puN POWDER 0.98 puTALBOT QUARTZTP 1.01 puWALA AVA 0.98 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 155.8 Mvar 116.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.8 Mvar 1.08 puBORAH 1.01 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.4 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 7 2 M W 3 2 M v a r 2 0 5 3 M W 5 8 M v a r 2037 MW 65 Mvar 2042 MW 62 Mvar 463 MW -57 Mvar 1037 MW 73 Mvar 1120 MW -115 Mvar 644 MW -94 Mvar 1047 MW -35 Mvar 659 MW 101 Mvar 732 MW -135 Mvar 947 MW 170 Mvar 52 MW 191 Mvar 4 4 4 M W - 7 M v a r 52 MW 124 Mvar 288 MW 5 Mvar 645 MW 199 Mvar 129 MW 2 Mvar 119 MW -2 Mvar 697 MW 59 Mvar 1.05 puANTICLIN 392 MW 1 Mvar 392 MW -1 Mvar 77 MW 107 Mvar 67 MW 90 Mvar 334 MW 48 Mvar 288 MW 5 Mvar 154 MW 15 Mvar 263 MW 75 Mvar 591 MW -86 Mvar 120 MW -27 Mvar 25 MW 52 Mvar 41 MW 56 Mvar 650 MW 154 Mvar 609 MW 21 Mvar 506 MW -250 Mvar 1222 MW -112 Mvar 276 MW -22 Mvar 199 MW -39 Mvar 226 MW -49 Mvar 186 MW -44 Mvar 20 MW -31 Mvar 3 3 6 M W 5 2 M v a r 76 MW 57 Mvar 314 MW -61 Mvar 134 MW -97 Mvar 112 MW -71 Mvar 128 MW -66 Mvar 129 MW -71 Mvar 5 5 4 M W 1 0 M v a r HORSEFLT 0.99 puBOISEBCH 92.2 Mvar 0.0 Mvar 1.00 puONTARIO 20 MW -31 Mvar 94 MW 12 Mvar 337 MW 90 Mvar 3 8 7 M W - 6 4 M v a r 121 MW -42 Mvar 429 MW -83 Mvar 346 MW -20 Mvar 346 MW -20 Mvar 356 MW -26 Mvar 360 MW -55 Mvar 226 MW -67 Mvar 293 MW -82 Mvar 2 0 M W 4 6 M v a r 2 0 M W 4 6 M v a r 1232 MW -45 Mvar 736 MW 92 Mvar 151 MW 25 Mvar 537 MW -53 Mvar 539 MW -4 Mvar 501 MW -40 Mvar 447 MW 22 Mvar 420 MW 1 Mvar 413 MW 1 Mvar 465 MW -16 Mvar 476 MW -17 Mvar 731 MW -119 Mvar 3 3 5 M W 1 6 2 M v a r 1551 MW -140 Mvar 1 6 4 5 M W - 1 M v a r 1 6 1 8 M W 3 2 M v a r 1 0 7 2 M W - 7 8 M v a r 1073 MW -167 Mvar ID-NW = -1868 MW Grassland = 0 MW Summer Lake = -1004 MW Lolo = -387 MW Walla Walla = -288 MW LaGrande = -199 MW Midpoint West = -1402 MW Borah West = -141 MW Idaho-Sierra = 444 MW N of John Day = 7630 MW COI = 4822 MW PDCI = 3101 MW ID-MT = -381 MW W of McNary = 4304 MW W of Slatt = 5881 MW Alturas Project = 173 MW Path C = -1441 MW Montana Southeast = 677 MW TOT 2B1 = 23 MW TOT 2C = 146 MW 1018 MW -130 Mvar 4 MW 93 Mvar 891 MW 24 Mvar 1007 MW 27 Mvar 41 M W 87 M v a r 1 0 0 7 M W - 8 5 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 437 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F3: 16hs2sa_2250idnw_N_nww Case BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.11 puHEMINWAY 497.0 Mvar 1.09 puPONDROSA 0.0 Mvar 1 6 2 9 M W - 1 0 9 M v a r 1 5 2 0 M W - 1 4 1 M v a r 1 5 8 6 M W - 2 6 1 M v a r 1446 MW -208 Mvar 260 MW 55 Mvar 227 MW 52 Mvar 130 MW 78 Mvar 0.98 puHEMINWAY 1.09 pu JOHN DAY 451.5 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.09 pu GRASSLND 178.3 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.09 puHANFORD449.6 Mvar 1.09 puCDR SPRG 1.09 puBUCKLEY 1.00 puLAGRANDE 51.7 Mvar 1.04 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 1.00 puN POWDER 0.99 puTALBOT QUARTZTP 1.01 puWALA AVA 0.98 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 153.6 Mvar 115.2 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.04 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-89.0 Mvar 1.05 puBORAH 0.99 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.00 puADELAIDE 0.99 puIDAHO-NV 1.01 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.6 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 7 1 M W - 4 2 M v a r 1 7 4 2 M W - 9 2 M v a r 1732 MW -99 Mvar 1737 MW -102 Mvar 459 MW -22 Mvar 909 MW 36 Mvar 1481 MW -207 Mvar 1005 MW -144 Mvar 930 MW -112 Mvar 2 MW 109 Mvar 977 MW -236 Mvar 0 MW 0 Mvar 970 MW 204 Mvar 3 8 2 M W - 3 2 M v a r 969 MW 71 Mvar 159 MW 46 Mvar 159 MW 72 Mvar 43 MW 0 Mvar 58 MW 3 Mvar 1456 MW 161 Mvar 1.05 puANTICLIN 419 MW 19 Mvar 419 MW 17 Mvar 411 MW 84 Mvar 353 MW 67 Mvar 525 MW 10 Mvar 159 MW 46 Mvar 133 MW -1 Mvar 297 MW 72 Mvar 635 MW -114 Mvar 18 MW 51 Mvar 191 MW 46 Mvar 219 MW 50 Mvar 491 MW 172 Mvar 562 MW 44 Mvar 546 MW -307 Mvar 1083 MW -129 Mvar 278 MW -16 Mvar 201 MW -35 Mvar 229 MW -44 Mvar 188 MW -45 Mvar 17 MW -30 Mvar 3 3 9 M W 5 8 M v a r 74 MW 62 Mvar 319 MW -56 Mvar 135 MW -101 Mvar 113 MW -74 Mvar 129 MW -70 Mvar 130 MW -75 Mvar 5 5 8 M W 2 1 M v a r HORSEFLT 0.98 puBOISEBCH 89.5 Mvar 0.0 Mvar 0.99 puONTARIO 17 MW -30 Mvar 94 MW 14 Mvar 341 MW 95 Mvar 3 9 1 M W - 6 0 M v a r 126 MW -39 Mvar 430 MW -78 Mvar 348 MW -9 Mvar 348 MW -9 Mvar 359 MW -15 Mvar 363 MW -44 Mvar 228 MW -63 Mvar 294 MW -77 Mvar 3 6 M W - 4 7 M v a r 3 6 M W - 4 6 M v a r 1091 MW -121 Mvar 812 MW 74 Mvar 122 MW 14 Mvar 523 MW -79 Mvar 547 MW -21 Mvar 508 MW -57 Mvar 454 MW 8 Mvar 428 MW -13 Mvar 421 MW -12 Mvar 476 MW -33 Mvar 487 MW -35 Mvar 754 MW -147 Mvar 3 3 9 M W 1 7 1 M v a r 1184 MW -96 Mvar 1 5 3 5 M W 3 8 M v a r 1 4 9 3 M W 6 3 M v a r 1 5 6 9 M W 1 6 3 M v a r 1571 MW 8 Mvar ID-NW = -1896 MW Grassland = -1145 MW Summer Lake = 130 MW Lolo = -391 MW Walla Walla = -292 MW LaGrande = -201 MW Midpoint West = -473 MW Borah West = 725 MW Idaho-Sierra = 382 MW N of John Day = 7641 MW COI = 4902 MW PDCI = 3101 MW ID-MT = -370 MW W of McNary = 4374 MW W of Slatt = 4930 MW Alturas Project = 190 MW Path C = -1409 MW Montana Southeast = 641 MW TOT 2B1 = 15 MW TOT 2C = 138 MW 129 MW 239 Mvar 0 MW 0 Mvar 956 MW -12 Mvar 1071 MW 3 Mvar 71 M W -89 M v a r 9 7 8 M W - 1 3 2 M v a r 1 1 4 5 M W - 1 2 4 M v a r 1109 MW -197 Mvar Page 438 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F4: 16hs2sa_2250idnw_N_nww Case BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 218.6 Mvar 1.05 puPONDROSA 0.0 Mvar 1 7 8 1 M W - 1 1 2 M v a r 1 6 5 5 M W - 1 4 4 M v a r 2 2 0 1 M W - 2 1 9 M v a r 2112 MW -209 Mvar 409 MW 60 Mvar 357 MW 59 Mvar 1004 MW -216 Mvar 0.99 puHEMINWAY 1.07 pu JOHN DAY 435.0 Mvar 1.07 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.5 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD442.3 Mvar 1.07 puCDR SPRG 1.06 puBUCKLEY 0.99 puLAGRANDE 51.5 Mvar 1.03 puHAT ROCK 0.99 puWALAWALA 0.0 Mvar 1.00 puN POWDER 0.98 puTALBOT QUARTZTP 1.00 puWALA AVA 0.97 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 154.1 Mvar 115.5 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-86.2 Mvar 1.07 puBORAH 1.00 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.99 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.9 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 7 4 M W 4 1 M v a r 2 0 5 4 M W 6 7 M v a r 2039 MW 78 Mvar 2045 MW 75 Mvar 463 MW -59 Mvar 1037 MW 74 Mvar 1120 MW -113 Mvar 644 MW -95 Mvar 1047 MW -31 Mvar 659 MW 106 Mvar 733 MW -134 Mvar 946 MW 102 Mvar 57 MW 161 Mvar 4 3 9 M W - 1 5 M v a r 57 MW 94 Mvar 289 MW -23 Mvar 644 MW 156 Mvar 128 MW -8 Mvar 119 MW -12 Mvar 701 MW 50 Mvar 1.05 puANTICLIN 392 MW 10 Mvar 392 MW 8 Mvar 79 MW 121 Mvar 69 MW 102 Mvar 338 MW 47 Mvar 289 MW -23 Mvar 156 MW 10 Mvar 265 MW 80 Mvar 594 MW -84 Mvar 121 MW -37 Mvar 25 MW 59 Mvar 42 MW 64 Mvar 648 MW 174 Mvar 611 MW 33 Mvar 505 MW -249 Mvar 1222 MW -109 Mvar 276 MW -19 Mvar 199 MW -37 Mvar 227 MW -47 Mvar 186 MW -45 Mvar 19 MW -31 Mvar 3 3 7 M W 5 5 M v a r 77 MW 59 Mvar 315 MW -60 Mvar 134 MW -97 Mvar 112 MW -71 Mvar 128 MW -66 Mvar 128 MW -71 Mvar 5 5 5 M W 1 8 M v a r HORSEFLT 0.98 puBOISEBCH 90.2 Mvar 0.0 Mvar 0.99 puONTARIO 19 MW -31 Mvar 94 MW 12 Mvar 337 MW 92 Mvar 3 8 7 M W - 6 2 M v a r 122 MW -42 Mvar 429 MW -78 Mvar 346 MW -12 Mvar 346 MW -12 Mvar 357 MW -18 Mvar 361 MW -47 Mvar 227 MW -63 Mvar 293 MW -78 Mvar 1 9 M W 5 0 M v a r 1 9 M W 4 9 M v a r 1233 MW -41 Mvar 737 MW 92 Mvar 151 MW 24 Mvar 538 MW -53 Mvar 541 MW -4 Mvar 502 MW -40 Mvar 448 MW 21 Mvar 422 MW -0 Mvar 414 MW 0 Mvar 467 MW -17 Mvar 477 MW -19 Mvar 734 MW -123 Mvar 3 3 5 M W 1 6 4 M v a r 1552 MW -138 Mvar 1 6 4 7 M W - 0 M v a r 1 6 2 1 M W 3 4 M v a r 1 0 7 2 M W - 1 0 0 M v a r 1073 MW -190 Mvar ID-NW = -1870 MW Grassland = 0 MW Summer Lake = -1004 MW Lolo = -387 MW Walla Walla = -289 MW LaGrande = -199 MW Midpoint West = -1398 MW Borah West = -142 MW Idaho-Sierra = 439 MW N of John Day = 7640 MW COI = 4829 MW PDCI = 3101 MW ID-MT = -368 MW W of McNary = 4306 MW W of Slatt = 5884 MW Alturas Project = 174 MW Path C = -1434 MW Montana Southeast = 681 MW TOT 2B1 = 21 MW TOT 2C = 144 MW 1019 MW -85 Mvar 0 MW 0 Mvar 893 MW 23 Mvar 1009 MW 27 Mvar 38 M W 94 M v a r 1 0 0 8 M W - 8 2 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 439 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F5: 16hs2sa_2250idnw_N_nww Case BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puPONDROSB 1.04 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 215.7 Mvar 1.04 puPONDROSA 0.0 Mvar 1 8 1 5 M W - 1 2 2 M v a r 1 6 7 9 M W - 1 5 2 M v a r 2 2 2 3 M W - 2 3 6 M v a r 2122 MW -227 Mvar 379 MW 64 Mvar 331 MW 62 Mvar 982 MW -215 Mvar 1.01 puHEMINWAY 1.06 pu JOHN DAY 428.8 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 171.8 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.07 puHANFORD439.5 Mvar 1.05 puCDR SPRG 1.05 puBUCKLEY 1.00 puLAGRANDE 51.7 Mvar 1.03 puHAT ROCK 0.99 puWALAWALA 0.0 Mvar 1.00 puN POWDER 0.98 puTALBOT QUARTZTP 1.00 puWALA AVA 0.97 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 154.6 Mvar 116.0 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-85.5 Mvar 1.06 puBORAH 1.00 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.00 puADELAIDE 0.98 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.7 Mvar 0.0 Mvar 0.0 Mvar 1.06 puMARION 0.0 Mvar 1 6 4 4 M W 3 2 M v a r 2 3 1 5 M W 1 6 4 M v a r 2085 MW 102 Mvar 2091 MW 99 Mvar 647 MW -66 Mvar 0 MW 0 Mvar 733 MW -128 Mvar 257 MW -118 Mvar 1143 MW 16 Mvar 1308 MW 158 Mvar 442 MW -115 Mvar 927 MW 57 Mvar 56 MW 146 Mvar 4 4 1 M W - 1 6 M v a r 56 MW 79 Mvar 284 MW -38 Mvar 631 MW 127 Mvar 127 MW -11 Mvar 118 MW -16 Mvar 700 MW 42 Mvar 1.05 puANTICLIN 393 MW 13 Mvar 392 MW 11 Mvar 79 MW 125 Mvar 69 MW 105 Mvar 334 MW 44 Mvar 284 MW -38 Mvar 153 MW 6 Mvar 264 MW 81 Mvar 594 MW -84 Mvar 120 MW -42 Mvar 26 MW 62 Mvar 42 MW 67 Mvar 649 MW 182 Mvar 612 MW 37 Mvar 413 MW -242 Mvar 1329 MW -110 Mvar 285 MW -24 Mvar 208 MW -46 Mvar 235 MW -56 Mvar 185 MW -44 Mvar 20 MW -32 Mvar 3 4 6 M W 5 4 M v a r 88 MW 59 Mvar 322 MW -60 Mvar 128 MW -96 Mvar 106 MW -70 Mvar 122 MW -65 Mvar 123 MW -70 Mvar 5 6 1 M W 1 5 M v a r HORSEFLT 0.99 puBOISEBCH 90.8 Mvar 0.0 Mvar 0.99 puONTARIO 20 MW -32 Mvar 96 MW 12 Mvar 340 MW 93 Mvar 3 9 2 M W - 6 5 M v a r 125 MW -35 Mvar 431 MW -85 Mvar 349 MW -14 Mvar 349 MW -14 Mvar 360 MW -20 Mvar 364 MW -50 Mvar 228 MW -67 Mvar 295 MW -82 Mvar 1 9 M W 5 2 M v a r 1 9 M W 5 1 M v a r 1341 MW 5 Mvar 651 MW 104 Mvar 189 MW 31 Mvar 561 MW -36 Mvar 531 MW 3 Mvar 494 MW -34 Mvar 440 MW 27 Mvar 413 MW 5 Mvar 405 MW 6 Mvar 454 MW -10 Mvar 464 MW -11 Mvar 708 MW -111 Mvar 3 4 1 M W 1 6 6 M v a r 1892 MW -170 Mvar 1 6 7 1 M W - 1 5 M v a r 1 6 4 3 M W 2 1 M v a r 1 1 0 4 M W - 1 1 3 M v a r 1105 MW -208 Mvar ID-NW = -1866 MW Grassland = 0 MW Summer Lake = -982 MW Lolo = -392 MW Walla Walla = -295 MW LaGrande = -208 MW Midpoint West = -1392 MW Borah West = -135 MW Idaho-Sierra = 441 MW N of John Day = 7597 MW COI = 4813 MW PDCI = 3101 MW ID-MT = -379 MW W of McNary = 4187 MW W of Slatt = 5560 MW Alturas Project = 172 MW Path C = -1438 MW Montana Southeast = 685 MW TOT 2B1 = 23 MW TOT 2C = 147 MW 996 MW -90 Mvar 1 MW -55 Mvar 802 MW 43 Mvar 922 MW 34 Mvar 37 M W 98 M v a r 1 0 8 6 M W - 2 7 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 440 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F6: 16hs2sa_2250idnw_N_nww Case N-1: Hatwai-Lolo 230 kV 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 223.7 Mvar 1.08 puPONDROSA 0.0 Mvar 1 6 0 6 M W - 1 3 0 M v a r 1 4 9 5 M W - 1 6 4 M v a r 1 7 1 3 M W - 2 1 4 M v a r 1595 MW -159 Mvar 290 MW 65 Mvar 253 MW 61 Mvar 256 MW 68 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.5 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 174.9 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD447.3 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 55.9 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.00 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.04 puQUARTZ 1.04 puBROWNLEE 160.9 Mvar 120.7 Mvar 1.03 puDRYCREEK 71.6 Mvar 1.03 puHELLSCYN 1.02 puLOLO 1.05 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.4 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.98 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 8 2 M W - 4 1 M v a r 1 7 3 7 M W - 9 9 M v a r 1766 MW -78 Mvar 1771 MW -80 Mvar 442 MW -34 Mvar 885 MW 15 Mvar 1588 MW -120 Mvar 1112 MW -80 Mvar 945 MW -104 Mvar 104 MW -29 Mvar 1099 MW -175 Mvar 1273 MW 142 Mvar 173 MW 178 Mvar 5 0 1 M W 2 M v a r 173 MW 108 Mvar 401 MW -21 Mvar 849 MW 173 Mvar 158 MW -6 Mvar 149 MW -11 Mvar 751 MW 67 Mvar 1.05 puANTICLIN 377 MW 4 Mvar 376 MW 2 Mvar 22 MW 118 Mvar 20 MW 100 Mvar 321 MW 37 Mvar 401 MW -21 Mvar 179 MW -1 Mvar 256 MW 74 Mvar 588 MW -85 Mvar 154 MW -36 Mvar 1 MW -60 Mvar 13 MW 65 Mvar 583 MW 161 Mvar 546 MW 37 Mvar 647 MW -255 Mvar 1108 MW -131 Mvar 207 MW -37 Mvar 134 MW -26 Mvar 163 MW -25 Mvar 169 MW -35 Mvar 37 MW -31 Mvar 2 6 4 M W 1 1 M v a r 22 MW 40 Mvar 221 MW -68 Mvar 160 MW -95 Mvar 139 MW -67 Mvar 155 MW -62 Mvar 155 MW -67 Mvar 4 7 0 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 95.0 Mvar 0.0 Mvar 1.02 puONTARIO 37 MW -31 Mvar 265 MW 52 Mvar 0 MW 0 Mvar 2 8 6 M W - 4 7 M v a r 66 MW -5 Mvar 385 MW -53 Mvar 301 MW -14 Mvar 301 MW -14 Mvar 311 MW -19 Mvar 314 MW -39 Mvar 187 MW -48 Mvar 242 MW -58 Mvar 1 9 M W 4 6 M v a r 1 9 M W 4 5 M v a r 1117 MW -112 Mvar 823 MW 84 Mvar 155 MW 23 Mvar 579 MW -58 Mvar 594 MW -4 Mvar 552 MW -38 Mvar 496 MW 23 Mvar 474 MW 6 Mvar 466 MW 7 Mvar 542 MW -4 Mvar 555 MW -5 Mvar 888 MW -82 Mvar 2 1 1 M W 6 9 M v a r 1152 MW -131 Mvar 1 5 0 3 M W 9 M v a r 1 4 6 8 M W 3 7 M v a r 1 3 3 1 M W 1 M v a r 1333 MW -119 Mvar ID-NW = -2242 MW Grassland = -1381 MW Summer Lake = -256 MW Lolo = -286 MW Walla Walla = -201 MW LaGrande = -134 MW Midpoint West = -1642 MW Borah West = -321 MW Idaho-Sierra = 501 MW N of John Day = 7830 MW COI = 4653 MW PDCI = 3101 MW ID-MT = -338 MW W of McNary = 4542 MW W of Slatt = 4895 MW Alturas Project = 150 MW Path C = -1601 MW Montana Southeast = 600 MW TOT 2B1 = 70 MW TOT 2C = 195 MW 257 MW -76 Mvar 136 MW 44 Mvar 1002 MW -2 Mvar 1113 MW 18 Mvar 37 M W 86 M v a r 9 9 0 M W - 1 2 2 M v a r 1 3 8 1 M W 1 8 2 M v a r 1327 MW -299 Mvar Page 441 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F7: 16hs2sa_2250idnw_N_nww Case N-2: DC-BIPOLE 1.04 puMALIN 0.0 Mvar 213.1 Mvar 213.1 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.07 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.04 puHEMINWAY 214.3 Mvar 1.08 puPONDROSA 0.0 Mvar 2 2 1 4 M W - 2 2 3 M v a r 2 0 2 8 M W - 2 1 3 M v a r 2 5 8 1 M W - 5 4 4 M v a r 2509 MW -110 Mvar 319 MW -9 Mvar 280 MW -4 Mvar 534 MW -36 Mvar 1.01 puHEMINWAY 1.08 pu JOHN DAY 446.5 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 173.8 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD454.0 Mvar 1.07 puCDR SPRG 1.07 puBUCKLEY 1.03 puLAGRANDE 55.3 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.00 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 159.1 Mvar 119.3 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.04 puMIDPOINT 0.0 Mvar 1.06 puCEDARHIL-84.2 Mvar 1.05 puBORAH 0.99 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.07 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 0.99 puADELAIDE 0.95 puIDAHO-NV 1.01 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.2 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 7 0 0 M W 1 2 M v a r 1 9 9 6 M W 3 M v a r 2565 MW 110 Mvar 2571 MW 107 Mvar 280 MW -54 Mvar 842 MW 7 Mvar 1609 MW -83 Mvar 1133 MW -48 Mvar 976 MW -88 Mvar 74 MW -11 Mvar 1151 MW -132 Mvar 1490 MW 103 Mvar 276 MW 136 Mvar 5 6 4 M W 6 M v a r 276 MW 66 Mvar 505 MW -64 Mvar 953 MW 146 Mvar 197 MW -25 Mvar 190 MW -30 Mvar 848 MW 78 Mvar 1.04 puANTICLIN 381 MW 28 Mvar 381 MW 27 Mvar 54 MW -137 Mvar 45 MW -118 Mvar 274 MW 23 Mvar 505 MW -64 Mvar 177 MW -21 Mvar 249 MW 83 Mvar 596 MW -84 Mvar 187 MW -57 Mvar 40 MW -77 Mvar 29 MW -83 Mvar 577 MW 208 Mvar 572 MW 62 Mvar 726 MW -248 Mvar 1025 MW -106 Mvar 214 MW -33 Mvar 141 MW -25 Mvar 169 MW -25 Mvar 174 MW -39 Mvar 32 MW -28 Mvar 2 7 1 M W 1 7 M v a r 37 MW 40 Mvar 223 MW -65 Mvar 153 MW -93 Mvar 132 MW -66 Mvar 148 MW -61 Mvar 148 MW -66 Mvar 4 7 7 M W 1 M v a r HORSEFLT 1.00 puBOISEBCH 92.9 Mvar 0.0 Mvar 1.01 puONTARIO 32 MW -28 Mvar 80 MW 2 Mvar 275 MW 65 Mvar 3 1 1 M W - 4 4 M v a r 69 MW -7 Mvar 397 MW -57 Mvar 315 MW -7 Mvar 315 MW -7 Mvar 325 MW -12 Mvar 328 MW -34 Mvar 200 MW -47 Mvar 259 MW -58 Mvar 2 M W 5 4 M v a r 2 M W 5 4 M v a r 1033 MW -114 Mvar 699 MW 186 Mvar 188 MW -17 Mvar 577 MW -78 Mvar 561 MW -17 Mvar 521 MW -53 Mvar 464 MW 12 Mvar 436 MW -6 Mvar 428 MW -5 Mvar 489 MW -22 Mvar 500 MW -24 Mvar 769 MW -119 Mvar 2 6 7 M W 1 2 8 M v a r 878 MW -124 Mvar 2 1 1 6 M W 2 1 6 M v a r 1 9 7 8 M W 2 5 0 M v a r 1 9 5 2 M W 9 2 M v a r 1956 MW -150 Mvar ID-NW = -2586 MW Grassland = -1416 MW Summer Lake = -534 MW Lolo = -311 MW Walla Walla = -203 MW LaGrande = -141 MW Midpoint West = -1908 MW Borah West = -526 MW Idaho-Sierra = 564 MW N of John Day = 6978 MW COI = 6314 MW PDCI = 0 MW ID-MT = -341 MW W of McNary = 4415 MW W of Slatt = 4751 MW Alturas Project = 194 MW Path C = -1935 MW Montana Southeast = 601 MW TOT 2B1 = 201 MW TOT 2C = 352 MW 538 MW -108 Mvar 124 MW 13 Mvar 893 MW 44 Mvar 999 MW 47 Mvar 4 M W 104 M v a r 9 4 3 M W - 1 2 2 M v a r 1 4 1 6 M W 2 7 6 M v a r 1357 MW -303 Mvar Page 442 of 776 Appendix F– 16hs2sa_2250idnw_N_nww Case Post-Transient Contingency Results Figure F8: 16hs2sa_2250idnw_N_nww Case N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 224.9 Mvar 1.09 puPONDROSA 0.0 Mvar 1 1 5 6 M W - 2 2 8 M v a r 1 1 0 0 M W - 2 6 6 M v a r 1 1 2 8 M W - 2 5 9 M v a r 1041 MW -179 Mvar 330 MW 37 Mvar 288 MW 37 Mvar 103 MW -144 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 446.7 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.7 Mvar 1.08 puCOYOTE 1.09 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD455.7 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.04 puLAGRANDE 55.9 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.00 puTALBOT QUARTZTP 1.02 puWALA AVA 1.00 puHURICANE 1.03 puQUARTZ 1.04 puBROWNLEE 160.8 Mvar 120.6 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.09 puLOW GRAN 1.09 puCEN FERY 0.0 Mvar 1.09 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.8 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 0 M W 0 M v a r 8 7 5 M W - 1 4 7 M v a r 0 MW 0 Mvar 3300 MW 124 Mvar 869 MW -23 Mvar 959 MW 39 Mvar 1542 MW -103 Mvar 1066 MW -53 Mvar 802 MW -122 Mvar 321 MW 18 Mvar 910 MW -161 Mvar 1117 MW 154 Mvar 94 MW 189 Mvar 4 9 2 M W 3 M v a r 94 MW 121 Mvar 333 MW -8 Mvar 766 MW 186 Mvar 133 MW -1 Mvar 124 MW -6 Mvar 736 MW 57 Mvar 1.05 puANTICLIN 393 MW 1 Mvar 392 MW -1 Mvar 65 MW 106 Mvar 57 MW 90 Mvar 337 MW 34 Mvar 333 MW -8 Mvar 165 MW 3 Mvar 267 MW 68 Mvar 598 MW -94 Mvar 131 MW -32 Mvar 22 MW 55 Mvar 38 MW 59 Mvar 647 MW 154 Mvar 620 MW 17 Mvar 614 MW -273 Mvar 1087 MW -102 Mvar 208 MW -36 Mvar 135 MW -25 Mvar 164 MW -24 Mvar 175 MW -38 Mvar 31 MW -28 Mvar 2 6 5 M W 1 2 M v a r 35 MW 37 Mvar 214 MW -66 Mvar 154 MW -93 Mvar 133 MW -65 Mvar 149 MW -60 Mvar 149 MW -66 Mvar 4 6 8 M W - 7 M v a r HORSEFLT 1.01 puBOISEBCH 94.9 Mvar 0.0 Mvar 1.01 puONTARIO 31 MW -28 Mvar 78 MW 1 Mvar 271 MW 62 Mvar 3 0 5 M W - 4 4 M v a r 61 MW -5 Mvar 394 MW -58 Mvar 309 MW -15 Mvar 309 MW -15 Mvar 318 MW -20 Mvar 321 MW -41 Mvar 198 MW -50 Mvar 255 MW -61 Mvar 1 4 M W 4 7 M v a r 1 4 M W 4 6 M v a r 1095 MW -91 Mvar 472 MW 161 Mvar 255 MW -18 Mvar 585 MW -88 Mvar 567 MW -21 Mvar 526 MW -56 Mvar 470 MW 10 Mvar 443 MW -8 Mvar 435 MW -7 Mvar 498 MW -24 Mvar 510 MW -25 Mvar 790 MW -119 Mvar 2 6 1 M W 1 2 3 M v a r 1361 MW -77 Mvar 1 1 0 4 M W - 7 4 M v a r 1 0 8 5 M W - 4 7 M v a r 1 1 4 0 M W - 6 5 M v a r 1141 MW -159 Mvar ID-NW = -1988 MW Grassland = -1479 MW Summer Lake = 103 MW Lolo = -305 MW Walla Walla = -194 MW LaGrande = -135 MW Midpoint West = -1498 MW Borah West = -194 MW Idaho-Sierra = 492 MW N of John Day = 6803 MW COI = 3982 MW PDCI = 3101 MW ID-MT = -331 MW W of McNary = 4343 MW W of Slatt = 4297 MW Alturas Project = 118 MW Path C = -1506 MW Montana Southeast = 555 MW TOT 2B1 = 49 MW TOT 2C = 189 MW 103 MW 16 Mvar 101 MW 54 Mvar 824 MW 52 Mvar 939 MW 48 Mvar 28 M W 89 M v a r 9 4 1 M W - 1 2 3 M v a r 1 4 7 9 M W 2 5 0 M v a r 1416 MW -385 Mvar Page 443 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 370.6 685.8 650.0 105.5% 780.0 87.9% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 641.1 1208.3 979.0 123.4% 1287.7 93.8% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 308.7 780.4 722.9 108.0% 1265.2 61.7% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1648.6 2850.8 2442.0 116.7% 3235.5 88.1% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1648.6 2850.8 2199.9 129.6% 3235.5 88.1% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1648.0 2844.4 2666.9 106.7% 4000.0 71.1% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at ROUND MT Branch Amp 1638.9 2833.2 2667.0 106.2% 4000.0 70.8% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALROU11 Branch Amp 1604.3 2772.0 2699.7 102.7% 4000.0 69.3% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1596.7 2755.9 2699.7 102.1% 4000.0 68.9% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1648.6 2907.0 2442.0 119.0% 3235.5 89.8% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1648.6 2907.0 2199.9 132.1% 3279.9 88.6% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1648.0 2900.0 2666.9 108.7% 4000.0 72.5% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1638.9 2889.5 2667.0 108.3% 4000.0 72.2% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1248.5 1237.0 100.9% 1395.9 89.4% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr ATHENA (45015) % Δ Volts 0.99 0.94 5.32% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40619) % Δ Volts 0.99 0.94 5.32% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PILOT RK (45413) % Δ Volts 0.99 0.94 5.32% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr BUCKAROO (45027) % Δ Volts 1.00 0.95 5.26% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr MISSIONT (47191) % Δ Volts 1.00 0.95 5.26% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PENDLBPA (41247) % Δ Volts 1.00 0.95 5.26% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PENDLT T (41248) % Δ Volts 1.00 0.95 5.26% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PENDLTON (45235) % Δ Volts 1.00 0.95 5.26% BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations Page 444 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 268.2 343.2 320.0 107.2% 370.0 92.7% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 653.0 1141.0 950.0 120.1% 1286.0 88.7% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 268.2 351.5 320.0 109.8% 370.0 95.0% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 653.0 1158.7 950.0 122.0% 1286.0 90.1% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1034.2 1009.1 102.5% 1285.2 80.5% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1270.7 1237.0 102.7% 1395.9 91.0% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ATHENA (45015) % Δ Volts 0.99 0.93 6.45% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PILOT RK (45413) % Δ Volts 0.99 0.93 6.45% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr MISSIONT (47191) % Δ Volts 1.00 0.94 6.38% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLTON (45235) % Δ Volts 1.00 0.94 6.38% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr MCKAY (45322) % Δ Volts 1.01 0.95 6.32% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ICE HAR2 (40567) % Δ Volts 1.03 0.97 6.19% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SACJAWEA (40911) % Δ Volts 1.03 0.97 6.19% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SACJWA T (40915) % Δ Volts 1.03 0.97 6.19% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40619) % Δ Volts 0.99 0.94 5.32% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr BUCKAROO (45027) % Δ Volts 1.00 0.95 5.26% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLBPA (41247) % Δ Volts 1.00 0.95 5.26% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLT T (41248) % Δ Volts 1.00 0.95 5.26% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations Page 445 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 809.5 800.0 101.2% 1199.9 67.5% BF 4708 Hatwai 500 kV Bus PTRSNFLT (62030) % Δ Volts 0.96 0.90 6.67% BF 4708 Hatwai 500 kV Bus PTRSNFUR (62386) % Δ Volts 0.97 0.91 6.59% BF 4708 Hatwai 500 kV Bus AMPS (65025) % Δ Volts 0.96 0.91 5.49% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 795.5 933.2 920.0 101.4% 1046.8 89.1% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1008.2 920.0 109.6% 1046.8 96.3% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1238.3 1237.0 100.1% 1395.9 88.7% BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1376.2 1237.0 111.2% 1395.9 98.6% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1022.1 920.0 111.1% 1046.8 97.6% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 826.2 800.0 103.3% 1199.9 68.9% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.96 0.88 9.09% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.97 0.90 7.78% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.96 0.90 6.67% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations Page 446 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1384.0 1237.0 111.9% 1395.9 99.1% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1032.1 920.0 112.2% 1046.8 98.6% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 803.3 800.0 100.4% 1199.9 66.9% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1280.2 1237.0 103.5% 1395.9 91.7% BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 JONTMB11 (90164) % Δ Volts 1.03 0.97 6.19% BF McNary 230 kV SECT 3 FRANKLIN (40443) % Δ Volts 1.00 0.94 6.38% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1394.1 1237.0 112.7% 1395.9 99.9% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1038.4 920.0 112.9% 1046.8 99.2% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1009.9 1009.1 100.1% 1285.2 78.6% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 833.0 800.0 104.1% 1199.9 69.4% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV PTRSNFLT (62030) % Δ Volts 0.96 0.88 9.09% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV PTRSNFUR (62386) % Δ Volts 0.97 0.89 8.99% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV AMPS (65025) % Δ Volts 0.96 0.89 7.87% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV BIGGRASS (65155) % Δ Volts 0.98 0.93 5.38% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV DILLON S (62084) % Δ Volts 0.98 0.93 5.38% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1392.0 1237.0 112.5% 1395.9 99.7% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1035.8 920.0 112.6% 1046.8 98.9% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1009.6 1009.1 100.0% 1285.2 78.6% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 835.1 800.0 104.4% 1199.9 69.6% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN AMPS (65025) % Δ Volts 0.96 0.91 5.49% BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant No Violations BF PGE Grassland-Slatt 500kV & Boardman Plant No Violations Bus: Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1015.5 1009.1 100.6% 1285.2 79.0% Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Allston-Keeler 500 kV + RAS No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1080.8 1009.1 107.1% 1285.2 84.1% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations Page 447 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 281.3 851.0 785.7 108.3% 926.3 91.9% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 281.3 851.0 785.7 108.3% 926.3 91.9% N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1648.6 2530.5 2442.0 103.6% 3235.5 78.2% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1648.6 2530.5 2199.9 115.0% 3279.9 77.2% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1804.1 2433.4 2199.9 110.6% 3280.5 74.2% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1788.8 2412.8 2199.9 109.7% 3280.5 73.5% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1974.9 2632.0 2477.9 106.2% 4000.0 65.8% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1019.1 1009.1 101.0% 1285.2 79.3% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 641.1 1164.7 979.0 119.0% 1287.7 90.5% N-1: Dixonville-Meridian 500 kV GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 308.7 729.1 722.9 100.9% 1265.2 57.6% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 811.4 800.0 101.4% 1199.9 67.6% N-1: Dworshak-Hatwai 500 kV + RAS + PTSN MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 813.7 800.0 101.7% 1199.9 67.8% N-1: Dworshak-Hatwai 500 kV + RAS+PTSN No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations Page 448 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS CLARKSTN (40239) -> N LEWIST (48253) CKT 1 at CLARKSTN Branch Amp 357.8 436.9 431.3 101.3% 464.9 94.0% N-1: Hatwai-Lolo 230 kV N LEWIST (48253) -> CLEARWTR (48075) CKT 1 at CLEARWTR Branch Amp 415.8 615.4 569.8 108.0% 618.0 99.6% N-1: Hatwai-Low Gran 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1007.8 920.0 109.5% 1046.8 96.3% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 795.5 1006.7 920.0 109.4% 1046.8 96.2% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1375.5 1237.0 111.2% 1395.9 98.5% N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1022.1 920.0 111.1% 1046.8 97.6% N-1: Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 825.7 800.0 103.2% 1199.9 68.8% N-1: Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.96 0.89 7.87% N-1: Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts 0.97 0.90 7.78% N-1: Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts 0.96 0.90 6.67% N-1: Hemingway-Grassland 500 kV + FACRI HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1250.9 1237.0 101.1% 1395.9 89.6% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1722.3 2886.9 2400.0 120.3% 3799.0 76.0% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1716.1 2867.9 2400.0 119.5% 3799.0 75.5% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1370.4 1237.0 110.8% 1395.9 98.2% N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 1017.5 920.0 110.6% 1046.8 97.2% N-1: Hemingway-Grassland 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 827.2 800.0 103.4% 1199.9 68.9% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations Page 449 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1648.6 2852.9 2442.0 116.8% 3235.5 88.2% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1648.6 2852.9 2199.9 129.7% 3279.9 87.0% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALROU21 Branch Amp 1648.0 2846.3 2666.9 106.7% 4000.0 71.2% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1638.9 2835.7 2667.0 106.3% 4000.0 70.9% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1604.3 2826.7 2699.7 104.7% 4000.0 70.7% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1596.7 2813.5 2699.7 104.2% 4000.0 70.3% N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1247.0 1237.0 100.8% 1395.9 89.3% N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV PTRSNFLT (62030) % Δ Volts 0.96 0.91 5.49% N-1: Midpoint-Hemingway 500 kV PTRSNFUR (62386) % Δ Volts 0.97 0.92 5.43% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt No Violations N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1283.0 1237.0 103.7% 1395.9 91.9% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 268.2 343.3 320.0 107.3% 370.0 92.8% N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 653.0 1141.4 950.0 120.1% 1286.0 88.8% N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 268.2 343.3 320.0 107.3% 370.0 92.8% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 653.0 1141.4 950.0 120.1% 1286.0 88.8% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations Page 450 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1804.1 3245.9 2199.9 147.5% 3280.5 98.9% N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUND MT Branch Amp 1804.1 3245.9 2667.0 121.7% 4000.0 81.1% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 1794.2 3232.3 2667.0 121.2% 4000.0 80.8% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 1974.9 2956.1 2667.0 110.8% 4000.0 73.9% N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1974.9 2956.1 2477.9 119.3% 4000.0 73.9% N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at TABVAC12 Branch Amp 1948.9 2935.9 2667.0 110.1% 4000.0 73.4% N-1: Table Mtn-Tesla 500 kV VACTES11 (30044) -> TESLA (30040) CKT 1 at VACTES11 Branch Amp 1382.9 2291.6 2230.0 102.8% 3555.9 64.4% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1501.4 2665.9 2230.0 119.5% 3555.9 75.0% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 795.5 920.2 920.0 100.0% 1046.8 87.9% N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 718.2 813.1 800.0 101.6% 1199.9 67.8% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.96 0.90 6.67% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.97 0.91 6.59% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS AMPS (65025) % Δ Volts 0.96 0.91 5.49% N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1036.5 1009.1 102.7% 1285.2 80.7% N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 902.8 1018.8 1009.1 101.0% 1285.2 79.3% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV BROONT12 (61981) -> ONTARIO (60265) CKT 1 at BROONT12 Branch Amp 954.7 1593.3 1590.0 100.2% 2328.0 68.4% N-2: Bridger-Populus #1 & #2 345 kV No Violations N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV POPBRI11 (61968) % Δ Volts 1.00 1.05 4.76% Page 451 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Broadview-Garrisont #1 & #2 500 kV + RAS AMPS (65025) % Δ Volts 0.96 1.01 4.95% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 795.5 978.7 920.0 106.4% 1046.8 93.5% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1804.1 2427.9 2199.9 110.4% 3280.5 74.0% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1722.3 2794.0 2400.0 116.4% 3799.0 73.5% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1788.8 2407.3 2199.9 109.4% 3280.5 73.4% N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1716.1 2780.1 2400.0 115.8% 3799.0 73.2% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1648.6 2324.3 2199.9 105.7% 3279.9 70.9% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1974.9 2592.6 2477.9 104.6% 4000.0 64.8% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1552.8 2260.7 2134.0 105.9% 3499.9 64.6% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1532.9 2228.5 2134.0 104.4% 3499.9 63.7% N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 1511.1 2199.5 2134.0 103.1% 3499.9 62.8% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1722.3 2586.0 2400.0 107.7% 3799.0 68.1% N-2: Double Palo Verde ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1804.1 2223.8 2199.9 101.1% 3280.5 67.8% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1716.1 2567.8 2400.0 107.0% 3799.0 67.6% N-2: Double Palo Verde ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1788.8 2205.0 2199.9 100.2% 3280.5 67.2% N-2: Double Palo Verde PTRSNFLT (62030) % Δ Volts 0.96 0.90 6.67% N-2: Double Palo Verde PTRSNFUR (62386) % Δ Volts 0.97 0.91 6.59% N-2: Double Palo Verde AMPS (65025) % Δ Volts 0.96 0.91 5.49% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.97 1.03 5.83% N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV No Violations N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1140.0 1263.4 1237.0 102.1% 1395.9 90.5% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1722.3 3327.5 2400.0 138.6% 3799.0 87.6% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1434.1 3238.7 2700.0 119.9% 4000.0 81.0% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1632.0 3154.9 2400.0 131.5% 4099.2 77.0% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1617.7 3141.6 2400.0 130.9% 4099.2 76.6% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1632.0 3191.9 2400.0 133.0% 4099.2 77.9% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1617.7 3181.4 2400.0 132.6% 4099.2 77.6% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations Page 452 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 1858.7 3164.7 2900.0 109.1% 4350.0 72.8% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS JOHN DAY (40585) -> GRIJOH12 (90065) CKT 1 at JOHN DAY Branch Amp 1884.6 3521.1 3500.0 100.6% 3500.01 100.6% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH11 (90064) -> GRIZZLY (40489) CKT 1 at GRIJOH11 Branch Amp 1876.4 3513.7 3500.0 100.4% 3500.0 100.4% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH12 Branch Amp 1876.4 3513.7 3000.0 117.1% 4050.0 86.8% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 268.2 339.8 320.0 106.2% 370.0 91.8% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 653.0 1141.8 950.0 120.2% 1286.0 88.8% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 77.6 94.3 94.0 100.3% 139.0 67.8% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CARLTON (40181) % Δ Volts 1.03 0.97 6.19% N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 795.5 942.5 920.0 102.4% 1046.8 90.0% N-2: Lower Granite-Central Ferry #1 & #2 500 kV No Violations N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1815.9 3730.1 2667.4 139.8% 4099.2 91.0% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1782.9 3622.5 2667.4 135.8% 4099.2 88.4% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1782.9 3622.5 2667.4 135.8% 4099.2 88.4% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1971.4 3204.2 2993.0 107.1% 4514.9 71.0% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1971.4 3204.2 2993.0 107.1% 4514.9 71.0% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1941.7 3171.7 2993.0 106.0% 4514.9 70.2% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1941.7 3171.7 2993.0 106.0% 4514.9 70.2% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1920.4 3134.6 2993.0 104.7% 4514.9 69.4% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) % Δ Volts 1.04 0.98 6.12% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV AMPS (65025) % Δ Volts 0.96 0.91 5.49% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV PTRSNFLT (62030) % Δ Volts 0.96 0.91 5.49% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV PTRSNFUR (62386) % Δ Volts 0.97 0.92 5.43% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 268.2 344.9 320.0 107.8% 370.0 93.2% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 653.0 1146.0 950.0 120.6% 1286.0 89.1% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations Page 453 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 690.1 911.4 830.9 109.7% 953.9 95.5% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS BRDGVLLE (31110) -> FRUTLDJT (31120) CKT 1 at BRDGVLLE Branch Amp 290.4 330.8 328.1 100.8% 371.4 89.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1815.9 3451.6 2667.4 129.4% 4099.2 84.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1782.9 3358.6 2667.4 125.9% 4099.2 81.9% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1782.9 3346.2 2667.4 125.5% 4099.2 81.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1971.4 3503.0 2993.0 117.0% 4514.9 77.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1971.4 3503.0 2993.0 117.0% 4514.9 77.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1941.7 3484.4 2993.0 116.4% 4514.9 77.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1941.7 3484.4 2993.0 116.4% 4514.9 77.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1920.4 3452.0 2993.0 115.3% 4514.9 76.5% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 285.4 921.2 825.9 111.5% 976.5 94.3% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 232.3 862.7 825.1 104.6% 975.0 88.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 389.6 467.0 462.9 100.9% 579.9 80.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1974.9 2545.1 2477.9 102.7% 4000.0 63.6% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 454 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.83 -1072 0.89 -3830 0.75 -2488 0.97 -2862 0.80 -3200 0.91 -1646 0.75 -592 0.75 -351 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.83 -1057 0.88 -3975 0.76 -2446 0.97 -2964 0.76 -3249 0.89 -2073 0.75 -586 0.75 -346 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.82 -1090 0.88 -4081 0.75 -2531 0.97 -2384 0.81 -3323 0.93 -1578 0.75 -603 0.75 -353 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.83 -1048 0.88 -4041 0.76 -2408 0.97 -2245 0.87 -2488 0.85 -2309 0.75 -585 0.75 -340 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.82 -1081 0.84 -3646 0.75 -2532 0.98 -2171 0.83 -3266 0.86 -2379 0.76 -582 0.75 -346 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.82 -1089 0.87 -4221 0.75 -2519 0.97 -2505 0.82 -3312 0.85 -2493 0.75 -604 0.75 -354 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.82 -1132 0.87 -4106 0.76 -2587 0.97 -2597 0.81 -3502 0.84 -2645 0.77 -541 0.76 -301 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.84 -969 0.90 -3525 0.77 -2200 0.98 -1693 0.84 -2493 0.88 -1924 0.77 -551 0.76 -318 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.83 -1069 0.88 -4097 0.76 -2438 0.97 -2331 0.82 -2837 0.86 -2404 0.75 -595 0.75 -346 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.84 -1006 0.89 -3770 0.76 -2250 0.98 -1928 0.82 -2375 0.87 -2100 0.76 -570 0.76 -328 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.82 -1095 0.85 -3942 0.75 -2559 0.97 -2485 0.81 -3405 0.85 -2559 0.75 -602 0.75 -353 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.82 -1096 0.84 -3782 0.75 -2564 0.97 -2458 0.82 -3385 0.85 -2526 0.75 -595 0.75 -349 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.82 -1130 0.87 -4027 0.76 -2582 0.97 -3245 0.81 -3491 0.84 -2626 0.77 -535 0.76 -300 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.82 -1113 0.87 -4385 0.75 -2591 0.97 -2622 0.82 -3493 0.84 -2670 0.75 -614 0.75 -354 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500 KV 0.82 -1109 0.87 -4156 0.75 -2584 0.97 -2567 0.81 -3454 0.84 -2616 0.78 -537 0.75 -351 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.83 -1019 0.89 -3753 0.76 -2329 0.97 -1778 0.84 -2841 0.86 -2146 0.76 -577 0.75 -335 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.83 -1013 0.91 -3510 0.76 -2331 0.97 -1686 0.85 -2671 0.88 -1994 0.76 -571 0.76 -331 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.82 -1107 0.87 -4243 0.75 -2575 0.97 -3248 0.81 -3470 0.84 -2642 0.77 -545 0.75 -337 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.83 -1076 0.89 -3788 0.75 -2487 0.97 -1958 0.84 -3021 0.84 -2073 0.75 -599 0.75 -352 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.83 -1053 0.88 -4028 0.76 -2378 0.97 -2252 0.83 -2678 0.86 -2262 0.75 -590 0.75 -344 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.83 -1062 0.88 -3696 0.76 -2495 0.97 -2714 0.84 -3180 0.87 -2274 0.76 -575 0.75 -333 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.82 -1090 0.88 -3981 0.75 -2524 0.96 -2231 0.83 -3196 0.86 -2391 0.75 -604 0.75 -355 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.82 -1104 0.87 -4163 0.75 -2563 0.97 -3016 0.83 -3352 0.84 -2501 0.74 -609 0.75 -358 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.82 -983 0.89 -3979 0.76 -2517 0.98 -2412 0.81 -3428 0.85 -2519 0.75 -597 0.75 -348 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.82 -1088 0.88 -3855 0.75 -2642 0.97 -2463 0.82 -3544 0.85 -2567 0.75 -594 0.75 -356 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.82 -1084 0.87 -3732 0.76 -2547 0.98 -2927 0.82 -3333 0.85 -2454 0.76 -577 0.76 -332 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.82 -1097 0.86 -4011 0.75 -2565 0.97 -2509 0.82 -3429 0.84 -2582 0.75 -602 0.75 -353 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.82 -1104 0.88 -4104 0.75 -2580 0.97 -2566 0.81 -3467 0.84 -2616 0.75 -599 0.75 -354 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.82 -1104 0.87 -4218 0.75 -2578 0.97 -2572 0.81 -3457 0.84 -2619 0.75 -604 0.75 -355 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV + RAS 0.83 -1085 0.88 -3915 0.75 -2505 0.98 -2076 0.85 -2963 0.81 -1813 0.75 -594 0.75 -348 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV + RAS 0.82 -1089 0.88 -3986 0.75 -2533 0.98 -2151 0.84 -3211 0.85 -2185 0.75 -595 0.75 -349 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.82 -1096 0.88 -4057 0.75 -2548 0.98 -2230 0.83 -3269 0.84 -2384 0.75 -605 0.75 -355 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.82 -1104 0.87 -4131 0.75 -2576 0.97 -2534 0.82 -3447 0.84 -2598 0.75 -607 0.75 -356 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.82 -1102 0.88 -3947 0.75 -2577 0.97 -2538 0.82 -3457 0.84 -2595 0.75 -600 0.75 -353 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.82 -1101 0.88 -3944 0.75 -2576 0.97 -2525 0.82 -3452 0.84 -2587 0.75 -600 0.75 -353 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV + RAS 0.82 -1078 0.88 -3882 0.75 -2562 0.98 -2130 0.86 -2912 0.83 -2219 0.74 -613 0.75 -372 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.83 -1094 0.88 -4085 0.75 -2531 0.98 -2265 0.82 -3279 0.81 -2210 0.75 -606 0.75 -356 BF 4432 OSTRANDER-TROUTDALE & SPLIT OSTRANDER 500 KV 0.82 -1097 0.88 -4074 0.75 -2551 0.98 -2187 0.83 -3312 0.84 -2394 0.75 -606 0.75 -356 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.82 -1104 0.87 -4190 0.75 -2572 0.98 -2339 0.82 -3385 0.84 -2499 0.74 -609 0.75 -357 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.82 -1102 0.87 -4205 0.75 -2568 0.98 -2340 0.82 -3378 0.84 -2508 0.74 -607 0.75 -357 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.82 -1098 0.88 -4103 0.75 -2556 0.98 -2281 0.82 -3330 0.85 -2417 0.75 -606 0.75 -356 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.82 -1097 0.88 -4123 0.75 -2552 0.98 -2211 0.83 -3333 0.84 -2443 0.75 -605 0.75 -355 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV + RAS 0.81 -1146 0.91 -3476 0.75 -2817 0.98 -2638 0.82 -4039 0.85 -2533 0.73 -626 0.74 -395 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.83 -1089 0.88 -3960 0.75 -2513 0.98 -2121 0.85 -2995 0.81 -1818 0.75 -601 0.75 -352 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV + RAS 0.81 -1164 0.88 -4176 0.74 -2822 0.97 -2846 0.80 -4120 0.83 -2961 0.72 -654 0.74 -408 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.83 -1074 0.89 -3596 0.75 -2508 0.98 -2092 0.83 -3223 0.86 -2361 0.76 -579 0.75 -341 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV + RAS 0.81 -1137 0.89 -3830 0.75 -2744 0.97 -2767 0.80 -3931 0.83 -2829 0.73 -625 0.74 -384 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.82 -1098 0.88 -4123 0.75 -2563 0.97 -2468 0.82 -3390 0.85 -2540 0.75 -602 0.75 -353 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.82 -1110 0.88 -3920 0.75 -2628 0.98 -2403 0.82 -3535 0.85 -2516 0.74 -604 0.75 -363 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.82 -1116 0.88 -4002 0.75 -2641 0.97 -2600 0.81 -3614 0.84 -2632 0.74 -608 0.75 -365 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.82 -1095 0.87 -4096 0.75 -2557 0.97 -2397 0.82 -3355 0.85 -2455 0.75 -600 0.75 -352 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.82 -1108 0.87 -4343 0.75 -2587 0.97 -3291 0.82 -3494 0.84 -2674 0.74 -610 0.75 -358 Page 455 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.83 -964 0.88 -3627 0.77 -2494 0.98 -2990 0.82 -3405 0.85 -2434 0.76 -575 0.76 -330 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.82 -1100 0.87 -4213 0.75 -2572 0.97 -2546 0.82 -3447 0.84 -2606 0.75 -603 0.75 -353 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.81 -1184 0.87 -4294 0.74 -2762 0.97 -2976 0.80 -3954 0.82 -2928 0.77 -568 0.75 -360 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.82 -1098 0.89 -3683 0.75 -2563 0.97 -2417 0.82 -3378 0.85 -2520 0.75 -598 0.75 -353 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.82 -1090 0.87 -4029 0.75 -2559 0.97 -2488 0.81 -3412 0.85 -2562 0.75 -599 0.75 -350 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.82 -1093 0.88 -4034 0.75 -2553 0.98 -2283 0.82 -3332 0.85 -2414 0.75 -598 0.75 -351 BF 4708 HATWAI 500 KV BUS 0.82 -1107 0.88 -3817 0.76 -2564 0.97 -2579 0.82 -3505 0.84 -2619 0.80 -465 0.77 -261 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.82 -1104 0.87 -4126 0.75 -2578 0.97 -2569 0.81 -3456 0.84 -2618 0.75 -605 0.75 -356 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV + RAS 0.82 -1084 0.87 -4131 0.75 -2666 0.97 -2839 0.80 -3824 0.83 -2830 0.75 -607 0.75 -350 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.82 -1038 0.87 -3990 0.76 -2535 0.97 -2611 0.82 -3536 0.84 -2652 0.78 -525 0.76 -302 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.82 -1109 0.87 -4243 0.75 -2577 0.96 -2552 0.82 -3419 0.85 -2580 0.74 -610 0.75 -358 BF 4888 ASHE-SLATT & CGS 500 KV 0.82 -1114 0.88 -3753 0.75 -2708 0.97 -2671 0.81 -3788 0.84 -2721 0.75 -593 0.75 -359 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.82 -1061 0.87 -3408 0.76 -2520 0.98 -2106 0.84 -3211 0.86 -2313 0.76 -569 0.76 -329 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.82 -1065 0.85 -3655 0.76 -2549 0.98 -2301 0.83 -3346 0.86 -2416 0.76 -571 0.76 -330 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.83 -1047 0.88 -3452 0.76 -2446 0.98 -1832 0.85 -2941 0.86 -2022 0.76 -579 0.75 -337 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.85 -945 0.88 -3941 0.76 -1731 0.97 -2156 0.81 -2643 0.86 -2253 0.76 -562 0.76 -324 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.85 -971 0.89 -3790 0.77 -1782 0.98 -2574 0.82 -2487 0.87 -2114 0.76 -560 0.76 -323 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.82 -1089 0.87 -4277 0.75 -2526 0.97 -2559 0.75 -3226 0.84 -2611 0.75 -604 0.75 -353 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.83 -1044 0.89 -3782 0.76 -2393 0.98 -2575 0.84 -2987 0.87 -2168 0.75 -585 0.75 -341 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.83 -1080 0.87 -4093 0.75 -2451 0.97 -2356 0.82 -3371 0.85 -2506 0.74 -609 0.75 -358 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.83 -1019 0.89 -3323 0.76 -2396 0.98 -1733 0.86 -2858 0.88 -1979 0.76 -558 0.76 -323 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.83 -1059 0.87 -3565 0.76 -2480 0.98 -1895 0.84 -3194 0.86 -2295 0.76 -574 0.76 -332 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.83 -1079 0.87 -4025 0.75 -2491 0.97 -2167 0.82 -3328 0.85 -2453 0.75 -605 0.75 -354 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.84 -932 0.91 -3502 0.77 -2124 0.98 -1645 0.84 -2510 0.88 -1939 0.77 -537 0.76 -307 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.83 -1028 0.89 -3840 0.76 -2369 0.97 -2006 0.83 -2869 0.86 -2203 0.76 -576 0.75 -333 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.82 -1101 0.88 -3948 0.75 -2573 0.97 -3170 0.82 -3443 0.84 -2581 0.75 -596 0.75 -352 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.82 -1100 0.88 -3928 0.75 -2569 0.97 -2478 0.81 -3416 0.85 -2565 0.75 -600 0.75 -353 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.82 -1094 0.88 -3728 0.75 -2556 0.97 -2412 0.82 -3377 0.85 -2512 0.75 -587 0.75 -346 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.82 -1091 0.87 -3726 0.75 -2554 0.98 -2286 0.83 -3355 0.85 -2463 0.76 -581 0.75 -343 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.82 -1104 0.87 -3940 0.75 -2575 0.97 -2507 0.82 -3437 0.84 -2574 0.75 -599 0.75 -352 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.82 -1064 0.88 -4036 0.76 -2540 0.97 -2370 0.82 -3355 0.85 -2493 0.75 -595 0.75 -346 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.82 -1093 0.88 -3950 0.75 -2608 0.97 -2412 0.83 -3455 0.85 -2505 0.75 -594 0.75 -354 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.88 -1049 0.89 -3442 0.76 -2607 0.98 -2203 0.83 -3415 0.86 -2413 0.76 -576 0.75 -340 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.83 -1057 0.87 -3624 0.76 -2480 0.98 -1972 0.84 -3141 0.87 -2239 0.76 -575 0.75 -334 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.83 -1057 0.87 -3586 0.76 -2492 0.98 -2033 0.84 -3203 0.86 -2291 0.76 -570 0.76 -331 BF 5266 SLATT-BUCKLY 500 KV 0.83 -1049 0.89 -3820 0.76 -2424 0.98 -1974 0.84 -3046 0.86 -2192 0.75 -590 0.75 -344 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.82 -1103 0.86 -4040 0.75 -2577 0.97 -2532 0.82 -3444 0.84 -2591 0.75 -600 0.75 -353 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.82 -1093 0.84 -3925 0.75 -2572 0.97 -2469 0.81 -3418 0.85 -2551 0.75 -593 0.75 -350 BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.90 -638 0.91 -3436 0.75 -1833 0.98 -2294 0.86 -2376 0.89 -1913 0.80 -448 0.77 -249 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.89 -845 0.87 -4264 0.72 -1777 0.97 -3189 0.82 -3159 0.85 -2580 0.75 -586 0.75 -341 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.89 -592 0.88 -4343 0.70 -1928 0.97 -2710 0.82 -3277 0.84 -2694 0.77 -520 0.76 -301 BF IPC POPULUS-CHILL-HEMINGWAY 500 KV & HEM 500/230 XFMR 0.88 -891 0.87 -4279 0.70 -2319 0.97 -2559 0.82 -3377 0.84 -2609 0.75 -599 0.75 -348 BF LOLO 230KV 0.84 -1103 0.88 -4046 0.75 -2572 0.97 -2382 0.82 -3281 0.85 -2478 0.75 -586 0.75 -336 BF MCNARY 230 KV SECT 1 0.82 -1133 0.87 -4143 0.75 -2660 0.97 -2694 0.81 -3653 0.84 -2714 0.74 -606 0.75 -363 BF MCNARY 230 KV SECT 2 0.82 -1118 0.87 -4219 0.75 -2617 0.97 -3282 0.80 -3594 0.96 -1960 0.74 -607 0.75 -361 BF MCNARY 230 KV SECT 3 0.82 -1099 0.89 -3907 0.75 -2585 0.97 -2480 0.82 -3441 0.85 -2548 0.75 -605 0.75 -359 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.85 -750 0.93 -2889 0.81 -1693 0.98 -1882 0.88 -2025 0.90 -1457 0.80 -431 0.77 -239 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV+PTSN 0.85 -757 0.93 -2918 0.81 -1711 0.98 -1270 0.88 -2040 0.90 -1470 0.80 -445 0.77 -243 BF PGE GRASSLAND-COYOTE SP 500KV & CARTY GAS PLANT 0.82 -1077 0.88 -4075 0.75 -2535 0.97 -2364 0.82 -3303 0.85 -2463 0.75 -595 0.75 -347 BF PGE GRASSLAND-SLATT 500KV & BOARDMAN PLANT 0.82 -1103 0.88 -3992 0.75 -2598 0.97 -2488 0.81 -3538 0.85 -2585 0.75 -598 0.75 -359 BUS: ALVEY 500 KV + RAS 0.82 -1094 0.88 -4351 0.75 -2589 0.97 -3259 0.87 -2696 0.82 -2597 0.73 -623 0.75 -378 BUS: BELL BPA 500 KV 0.82 -1103 0.87 -4154 0.75 -2579 0.97 -2566 0.81 -3452 0.84 -2615 0.78 -534 0.75 -356 Page 456 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BUS: BUCKLEY 500 KV 0.83 -1022 0.90 -3530 0.76 -2351 0.98 -1710 0.85 -2762 0.85 -1852 0.76 -579 0.75 -338 BUS: DIXONVILLE 500 KV 0.83 -1036 0.88 -4043 0.76 -2381 0.97 -2237 0.86 -2487 0.85 -2330 0.76 -579 0.75 -336 BUS: HOT SPRINGS 500 KV 0.82 -1103 0.87 -4232 0.75 -2573 0.97 -3232 0.81 -3454 0.84 -2620 0.75 -577 0.75 -351 BUS: KEELER 500 KV + RAS 0.81 -1147 0.92 -3320 0.75 -2810 0.98 -2393 0.84 -3773 0.86 -2271 0.73 -628 0.74 -397 BUS: ROCK CREEK 500 KV 0.83 -1056 0.88 -3585 0.76 -2488 0.98 -1973 0.84 -3176 0.86 -2265 0.76 -570 0.76 -331 BUS: SICKLER 500 KV 0.82 -1101 0.88 -3890 0.75 -2575 0.97 -2517 0.82 -3447 0.84 -2581 0.75 -599 0.75 -353 BUS: SUMMER LAKE 500 KV 0.86 -929 0.89 -3746 0.77 -1697 0.98 -1885 0.82 -2446 0.87 -2065 0.76 -554 0.76 -320 N-1: ALLSTON-KEELER 500 KV + RAS 0.81 -1150 0.91 -3549 0.74 -2824 0.98 -2689 0.82 -4085 0.85 -2585 0.73 -628 0.74 -397 N-1: ALLSTON-NAPAVINE 500 KV 0.82 -1094 0.88 -4037 0.75 -2553 0.98 -2289 0.82 -3337 0.85 -2425 0.75 -599 0.75 -351 N-1: ALLSTON-PAUL #2 500 KV 0.82 -1094 0.87 -4059 0.75 -2553 0.98 -2289 0.82 -3337 0.85 -2430 0.75 -598 0.75 -351 N-1: ALVERY-DIXONVILLE 500 KV 0.83 -1034 0.88 -4011 0.76 -2372 0.97 -2191 0.87 -2355 0.85 -2356 0.76 -580 0.75 -337 N-1: ALVEY-MARION 500 KV 0.83 -1046 0.89 -3884 0.76 -2402 0.98 -2025 0.86 -2575 0.86 -2238 0.75 -585 0.75 -341 N-1: ASHE-HANFORD 500 KV 0.82 -1102 0.85 -3921 0.75 -2576 0.97 -2518 0.82 -3427 0.85 -2559 0.75 -599 0.75 -352 N-1: ASHE-LOW MON 500 KV 0.82 -1094 0.87 -4079 0.75 -2564 0.97 -2517 0.82 -3430 0.84 -2574 0.75 -603 0.75 -352 N-1: ASHE-MARION 500 KV 0.83 -1056 0.89 -3642 0.76 -2457 0.98 -1889 0.85 -2996 0.86 -2066 0.75 -582 0.75 -341 N-1: ASHE-SLATT 500 KV 0.82 -1065 0.87 -3646 0.76 -2526 0.98 -2153 0.83 -3249 0.86 -2349 0.76 -572 0.76 -330 N-1: BELL-COULEE 500 KV 0.82 -1101 0.87 -4211 0.75 -2573 0.97 -2570 0.81 -3457 0.84 -2622 0.77 -548 0.75 -346 N-1: BELL-TAFT 500 KV 0.82 -1106 0.87 -4233 0.75 -2581 0.97 -2564 0.81 -3446 0.84 -2615 0.77 -546 0.75 -360 N-1: BIG EDDY-CELILO 500 KV 0.82 -1105 0.87 -4287 0.75 -2579 0.97 -2575 0.81 -3459 0.84 -2627 0.74 -608 0.75 -357 N-1: BIG EDDY-JOHN DAY 500 KV 0.82 -1107 0.87 -4264 0.75 -2577 0.96 -2582 0.82 -3441 0.84 -2604 0.74 -609 0.75 -358 N-1: BIG EDDY-KNIGHT 500 KV 0.82 -1090 0.87 -4079 0.75 -2551 0.98 -2916 0.82 -3369 0.85 -2516 0.75 -597 0.75 -349 N-1: BIG EDDY-OSTRANDER 500 KV 0.82 -1103 0.87 -4226 0.75 -2569 0.98 -2333 0.81 -3403 0.84 -2539 0.74 -608 0.75 -357 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.82 -1029 0.87 -4256 0.76 -2461 0.97 -2539 0.82 -3422 0.84 -2599 0.75 -604 0.75 -353 N-1: BRADY-ANTELOPE 230 KV 0.82 -1102 0.87 -4269 0.75 -2559 0.97 -2568 0.81 -3451 0.84 -2619 0.75 -567 0.75 -354 N-1: BROADVIEW-GARRISON #1 500 KV 0.82 -1109 0.87 -4280 0.75 -2577 0.97 -2597 0.81 -3481 0.84 -2649 0.81 -471 0.78 -280 N-1: BROWNLEE-ONTARIO 230 KV 0.83 -992 0.87 -4221 0.76 -2364 0.97 -2508 0.82 -3399 0.84 -2575 0.75 -601 0.75 -352 N-1: BUCKLEY-GRIZZLY 500 KV 0.83 -1055 0.88 -3993 0.76 -2443 0.97 -2181 0.83 -3095 0.86 -2336 0.75 -588 0.75 -342 N-1: BUCKLEY-MARION 500 KV 0.82 -1097 0.88 -4112 0.75 -2542 0.97 -2385 0.82 -3314 0.82 -2237 0.75 -607 0.75 -357 N-1: BUCKLEY-SLATT 500 KV 0.83 -1049 0.89 -3820 0.76 -2424 0.98 -1974 0.84 -3046 0.86 -2192 0.75 -590 0.75 -344 N-1: CAPTAIN JACK-OLINDA 500 KV 0.84 -1019 0.89 -3859 0.76 -2270 0.97 -2079 0.83 -2299 0.87 -2176 0.76 -573 0.76 -331 N-1: CAPTJACK-KFALLS 500 KV 0.83 -1054 0.87 -4219 0.76 -2418 0.97 -3045 0.75 -3247 0.88 -2435 0.75 -589 0.75 -342 N-1: CASCADE CROSSING 500 KV 0.83 -1084 0.89 -3878 0.75 -2486 0.98 -2074 0.84 -3088 0.85 -2084 0.75 -605 0.75 -356 N-1: CHIEF JO-COULEE 500 KV 0.82 -1106 0.87 -4198 0.75 -2580 0.97 -2579 0.81 -3461 0.84 -2635 0.74 -608 0.75 -358 N-1: CHIEF JO-MONROE 500 KV 0.82 -1103 0.88 -4055 0.75 -2573 0.97 -2527 0.82 -3445 0.84 -2594 0.75 -603 0.75 -355 N-1: CHIEF JO-SICKLER 500 KV 0.82 -1103 0.88 -4078 0.75 -2574 0.97 -2551 0.82 -3449 0.84 -2606 0.75 -600 0.75 -353 N-1: COULEE-HANFORD 500 KV 0.82 -1095 0.87 -3653 0.75 -2567 0.97 -2440 0.83 -3411 0.85 -2521 0.76 -569 0.75 -337 N-1: COULEE-SCHULTZ 500 KV 0.82 -1098 0.88 -3911 0.75 -2565 0.97 -3146 0.81 -3424 0.85 -2566 0.75 -589 0.75 -347 N-1: COVINGTON4-RAVER 500 KV 0.82 -1106 0.87 -4263 0.75 -2581 0.97 -2582 0.81 -3465 0.84 -2636 0.74 -609 0.75 -357 N-1: COVINGTON5-RAVER 500 KV 0.82 -1106 0.87 -4261 0.75 -2581 0.97 -2581 0.81 -3465 0.84 -2636 0.74 -608 0.75 -357 N-1: COYOTE-LONGHORN 500 KV 0.82 -1089 0.87 -4200 0.75 -2571 0.97 -2488 0.81 -3405 0.85 -2570 0.75 -600 0.75 -350 N-1: CUSTERW-MONROE 500 KV 0.82 -1105 0.88 -4117 0.75 -2581 0.97 -2570 0.81 -3470 0.84 -2619 0.75 -600 0.75 -354 N-1: DIXONVILLE-MERIDIAN 500 KV 0.83 -1048 0.88 -4062 0.76 -2411 0.97 -2275 0.84 -2691 0.85 -2367 0.75 -585 0.75 -340 N-1: DRYCREEK-LOLO 230 KV 0.82 -1106 0.87 -4286 0.75 -2580 0.97 -2579 0.81 -3460 0.84 -2638 0.75 -607 0.75 -357 N-1: DRYCREEK-N LEWISTON 230 KV 0.82 -1104 0.87 -4282 0.75 -2579 0.97 -2576 0.81 -3458 0.84 -2636 0.75 -607 0.75 -356 N-1: DRYCREEK-WALA AVA 230 KV 0.82 -1102 0.88 -4253 0.75 -2581 0.97 -2584 0.81 -3464 0.84 -2640 0.74 -610 0.75 -358 N-1: DWORSHAK-HATWAI 500 KV + RAS 0.82 -1140 0.88 -3840 0.76 -2580 0.97 -2560 0.82 -3499 0.84 -2609 0.76 -561 0.77 -278 N-1: DWORSHAK-HATWAI 500 KV + RAS + PTSN 0.82 -1143 0.88 -3858 0.76 -2597 0.97 -2573 0.82 -3509 0.84 -2617 0.76 -573 0.77 -282 N-1: DWORSHAK-TAFT 500 KV 0.82 -1130 0.88 -4011 0.76 -2576 0.97 -2575 0.82 -3484 0.84 -2620 0.80 -472 0.76 -289 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.82 -1106 0.87 -4164 0.75 -2580 0.97 -2550 0.82 -3451 0.84 -2606 0.74 -608 0.75 -357 N-1: ECHO LAKE-RAVER 500 KV 0.82 -1103 0.87 -4193 0.75 -2575 0.97 -2552 0.81 -3451 0.84 -2610 0.75 -604 0.75 -355 N-1: ECHO LAKE-SCHULTZ 500 KV 0.82 -1103 0.87 -4114 0.75 -2574 0.97 -2524 0.82 -3441 0.84 -2594 0.75 -606 0.75 -356 N-1: ECHO LAKE-SNOK TAP 500 KV 0.82 -1102 0.88 -3988 0.75 -2574 0.97 -2522 0.82 -3448 0.84 -2588 0.75 -596 0.75 -352 Page 457 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: GARRISON-TAFT #2 500 KV 0.82 -1109 0.87 -4316 0.75 -2583 0.97 -2597 0.82 -3476 0.84 -2648 0.76 -579 0.75 -347 N-1: GOLDHILL-PLACER 115 KV 0.82 -1109 0.87 -4341 0.75 -2587 0.97 -2612 0.82 -3501 0.84 -2666 0.74 -609 0.75 -357 N-1: GRASSLAND-COYOTE 500 KV 0.82 -1077 0.88 -4075 0.75 -2535 0.97 -3025 0.82 -3303 0.85 -2463 0.75 -595 0.75 -347 N-1: GRASSLAND-SLATT 500 KV 0.82 -1103 0.87 -4262 0.75 -2542 0.97 -2536 0.82 -3441 0.84 -2613 0.75 -607 0.75 -356 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.83 -1032 0.89 -3876 0.76 -2386 0.97 -2709 0.83 -2898 0.86 -2226 0.76 -577 0.75 -334 N-1: GRIZZLY-MALIN 500 KV 0.84 -1021 0.89 -3814 0.76 -2326 0.98 -2602 0.82 -2717 0.87 -2143 0.76 -577 0.75 -335 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.84 -983 0.89 -3862 0.77 -2252 0.98 -1999 0.83 -2832 0.87 -2194 0.76 -557 0.76 -321 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.84 -1019 0.89 -3782 0.76 -2317 0.98 -1934 0.82 -2689 0.87 -2126 0.76 -577 0.75 -335 N-1: GRIZZLY-ROUND BU 500 KV 0.82 -1104 0.87 -4269 0.75 -2572 0.97 -2536 0.81 -3444 0.84 -2610 0.75 -607 0.75 -357 N-1: HANFORD-LOW MON 500 KV 0.82 -1101 0.86 -4058 0.75 -2570 0.97 -3197 0.82 -3438 0.84 -2599 0.75 -605 0.75 -355 N-1: HANFORD-VANTAGE 500 KV 0.82 -1094 0.84 -3924 0.75 -2572 0.97 -2469 0.81 -3418 0.85 -2551 0.75 -593 0.75 -350 N-1: HANFORD-WAUTOMA 500 KV 0.82 -1101 0.86 -4192 0.75 -2570 0.97 -3193 0.82 -3442 0.84 -2595 0.75 -606 0.75 -355 N-1: HATWAI 500/230 KV XFMR + RAS 0.82 -1126 0.87 -4307 0.75 -2600 0.97 -2574 0.81 -3443 0.84 -2634 0.74 -616 0.75 -355 N-1: HATWAI-LOLO 230 KV 0.82 -1113 0.87 -4295 0.75 -2588 0.97 -2578 0.81 -3454 0.84 -2637 0.74 -611 0.75 -356 N-1: HATWAI-LOW GRAN 500 KV 0.82 -1039 0.87 -4018 0.76 -2538 0.97 -2632 0.82 -3544 0.84 -2663 0.78 -525 0.76 -302 N-1: HATWAI-N LEWISTON 230 KV 0.82 -1106 0.87 -4286 0.75 -2580 0.97 -2579 0.81 -3460 0.84 -2638 0.74 -607 0.75 -357 N-1: HELLS CANYON-BROWNLEE 230 KV 0.82 -995 0.88 -3942 0.76 -2461 0.97 -2288 0.83 -3194 0.86 -2413 0.76 -576 0.75 -337 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.85 -1175 0.91 -3849 0.75 -2582 0.97 -2406 0.82 -3303 0.85 -2506 0.75 -594 0.75 -347 N-1: HEMINGWAY-GRASSLAND 500 KV 0.85 -776 0.91 -3442 0.80 -1750 0.98 -1655 0.85 -2393 0.89 -1916 0.80 -459 0.77 -251 N-1: HEMINGWAY-GRASSLAND 500 KV + FACRI 0.83 -988 0.86 -4513 0.76 -2199 0.97 -3706 0.84 -4124 0.82 -2964 0.76 -559 0.76 -321 N-1: HEMINGWAY-GRASSLAND 500 KV + PTSN SHUNT 0.84 -835 0.91 -3511 0.80 -1896 0.98 -1720 0.85 -2477 0.88 -1973 0.79 -474 0.77 -258 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.84 -996 0.87 -4256 0.76 -1836 0.97 -3175 0.82 -3150 0.85 -2573 0.75 -583 0.75 -339 N-1: HILL TOP 345/230 XFMR 0.83 -1080 0.87 -4274 0.76 -2476 0.97 -2576 0.82 -3385 0.84 -2625 0.75 -601 0.75 -352 N-1: HORSE HV-MCNARY 230 KV 0.82 -1096 0.87 -4223 0.75 -2565 0.97 -2529 0.82 -3434 0.84 -2589 0.75 -607 0.75 -356 N-1: HOT SPRINGS-TAFT 500 KV 0.82 -1103 0.87 -4232 0.75 -2573 0.97 -3232 0.81 -3454 0.84 -2620 0.75 -576 0.75 -351 N-1: HUMBOLDT-COYOTE CK 345 KV 0.82 -1163 0.87 -4193 0.75 -2608 0.97 -2444 0.82 -3165 0.85 -2510 0.74 -617 0.75 -361 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.82 -1118 0.87 -4333 0.75 -2612 0.97 -2590 0.82 -3449 0.84 -2643 0.74 -615 0.75 -361 N-1: ING500-CUSTERW 500 KV 0.82 -1105 0.87 -4223 0.75 -2578 0.97 -2573 0.81 -3458 0.84 -2620 0.75 -604 0.75 -356 N-1: JOHN DAY-MARION 500 KV 0.82 -1093 0.88 -4088 0.75 -2537 0.97 -2317 0.82 -3268 0.82 -2238 0.75 -605 0.75 -355 N-1: JOHN DAY-ROCK CK 500 KV 0.83 -1060 0.88 -3714 0.76 -2495 0.98 -2032 0.84 -3205 0.86 -2313 0.76 -574 0.76 -332 N-1: JOHN DAY-SLATT 500 KV 0.83 -1089 0.87 -4113 0.75 -2512 0.97 -2235 0.82 -3380 0.85 -2510 0.75 -606 0.75 -356 N-1: KFALLS-MERIDIAN 500 KV 0.82 -1094 0.88 -4147 0.75 -2543 0.97 -2444 0.79 -3458 0.91 -1736 0.75 -604 0.75 -354 N-1: KNIGHT-WAUTOMA 500 KV 0.83 -1060 0.88 -3680 0.76 -2485 0.98 -1999 0.84 -3157 0.87 -2256 0.76 -576 0.75 -335 N-1: LAGRANDE-NORTH POWDER 230 KV 0.83 -1054 0.87 -4249 0.75 -2566 0.97 -2524 0.82 -3400 0.84 -2587 0.75 -602 0.75 -352 N-1: LANES-MARION 500 KV 0.82 -1095 0.87 -4139 0.75 -2545 0.97 -2398 0.83 -3240 0.85 -2415 0.75 -604 0.75 -354 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.82 -1104 0.87 -4265 0.75 -2577 0.97 -2570 0.81 -3457 0.84 -2622 0.75 -606 0.75 -356 N-1: LIT GOOSE-LOW MON 500 KV 0.82 -1102 0.87 -4233 0.75 -2575 0.97 -2556 0.81 -3451 0.84 -2612 0.75 -605 0.75 -354 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.82 -1101 0.87 -4246 0.75 -2575 0.97 -2566 0.81 -3457 0.84 -2619 0.75 -603 0.75 -354 N-1: LOW MON-SAC TAP 500 KV 0.82 -1094 0.87 -3868 0.75 -2564 0.97 -2428 0.82 -3387 0.84 -2513 0.75 -582 0.75 -335 N-1: MALIN 500/230 XFMR 0.82 -1091 0.87 -4226 0.75 -2523 0.97 -3167 0.83 -3323 0.85 -2499 0.75 -605 0.75 -355 N-1: MALIN-HILLTOP 230 KV 0.82 -1106 0.87 -4300 0.75 -2580 0.97 -2583 0.81 -3464 0.84 -2641 0.74 -608 0.75 -357 N-1: MALIN-ROUND MTN #1 500 KV 0.83 -1071 0.88 -4103 0.76 -2443 0.97 -2340 0.82 -2848 0.86 -2410 0.75 -595 0.75 -347 N-1: MALIN-ROUND MTN #2 500 KV 0.83 -1069 0.88 -4097 0.76 -2436 0.97 -2321 0.82 -2821 0.86 -2400 0.75 -594 0.75 -346 N-1: MALIN-SUMMER LAKE 500 KV 0.83 -1100 0.88 -4052 0.76 -2398 0.97 -2285 0.81 -2879 0.86 -2341 0.75 -608 0.75 -358 N-1: MAPLE VLY-ROCKY RH 345 KV 0.82 -1104 0.87 -4154 0.75 -2576 0.97 -3213 0.81 -3449 0.84 -2607 0.75 -606 0.75 -356 N-1: MARION-PEARL 500 KV 0.82 -1096 0.87 -4159 0.75 -2535 0.97 -2377 0.84 -3084 0.80 -1903 0.75 -604 0.75 -354 N-1: MARION-SANTIAM 500 KV 0.82 -1112 0.87 -4375 0.75 -2597 0.97 -2681 0.81 -3549 0.83 -2728 0.74 -610 0.75 -358 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.82 -1106 0.87 -4276 0.75 -2579 0.97 -2566 0.82 -3448 0.84 -2605 0.74 -608 0.75 -357 N-1: MCNARY 500/230 KV XFMR 0.83 -1006 0.89 -4129 0.76 -2546 0.98 -2519 0.81 -3504 0.84 -2611 0.75 -607 0.75 -357 N-1: MCNARY S2-MCNARY S3 230 KV 0.82 -1104 0.87 -4274 0.75 -2577 0.97 -2577 0.81 -3459 0.84 -2639 0.74 -608 0.75 -357 N-1: MCNARY-BOARD T1 230 KV 0.82 -1099 0.87 -4291 0.75 -2560 0.97 -2549 0.82 -3415 0.84 -2606 0.75 -607 0.75 -355 N-1: MCNARY-JOHN DAY 500 KV 0.83 -1066 0.88 -3975 0.75 -2498 0.97 -2209 0.83 -3287 0.86 -2418 0.75 -600 0.75 -351 Page 458 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: MCNARY-LONGHORN 500 KV 0.82 -1067 0.87 -4102 0.76 -2562 0.97 -2454 0.82 -3396 0.85 -2545 0.75 -595 0.75 -346 N-1: MCNARY-ROSS 345 KV 0.82 -1091 0.87 -4176 0.75 -2556 0.97 -3125 0.82 -3384 0.85 -2538 0.75 -607 0.75 -356 N-1: MCNARY-ROUNDUP 230 KV 0.86 -962 0.87 -4185 0.76 -2509 0.97 -2455 0.83 -3325 0.85 -2539 0.75 -595 0.75 -348 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.82 -1089 0.87 -3795 0.75 -2554 0.97 -2374 0.82 -3348 0.85 -2469 0.75 -580 0.75 -334 N-1: MIDPOINT-HEMINGWAY 500 KV 0.85 -964 0.87 -4259 0.70 -2099 0.97 -3186 0.82 -3203 0.85 -2566 0.77 -533 0.76 -306 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN SHUNT 0.85 -969 0.87 -4278 0.70 -2112 0.97 -2536 0.82 -3214 0.85 -2574 0.77 -545 0.76 -309 N-1: MIDPOINT-HUMBOLDT 345 KV 0.82 -1165 0.87 -4156 0.75 -2630 0.97 -2397 0.83 -3087 0.85 -2469 0.74 -618 0.75 -362 N-1: NAPAVINE-PAUL 500 KV 0.82 -1100 0.87 -4192 0.75 -2566 0.97 -2484 0.81 -3416 0.85 -2564 0.75 -603 0.75 -353 N-1: OLYMPIA-PAUL 500 KV 0.82 -1108 0.87 -4345 0.75 -2584 0.97 -2619 0.82 -3489 0.84 -2671 0.74 -609 0.75 -358 N-1: ONTARIO-CALDWELL 230 KV 0.84 -1062 0.87 -4259 0.75 -2465 0.97 -3206 0.82 -3425 0.84 -2603 0.75 -604 0.75 -354 N-1: OSTRANDER-KNIGHT 500 KV 0.82 -1098 0.88 -4126 0.75 -2554 0.98 -2298 0.82 -3346 0.85 -2462 0.75 -606 0.75 -355 N-1: OSTRANDER-PEARL 500 KV 0.82 -1104 0.87 -4285 0.75 -2576 0.98 -2382 0.81 -3466 0.83 -2595 0.74 -608 0.75 -357 N-1: OSTRANDER-TROUTDALE 500 KV 0.82 -1107 0.87 -4260 0.75 -2582 0.97 -2557 0.82 -3448 0.84 -2594 0.74 -609 0.75 -357 N-1: OXBOW-BROWNLEE #2 230 KV 0.82 -1092 0.87 -4282 0.75 -2571 0.97 -2573 0.81 -3455 0.84 -2623 0.75 -607 0.75 -356 N-1: OXBOW-LOLO 230 KV 0.84 -1093 0.88 -4029 0.75 -2564 0.97 -2381 0.82 -3272 0.85 -2472 0.75 -585 0.75 -336 N-1: PAUL-SATSOP 500 KV 0.82 -1105 0.87 -4238 0.75 -2577 0.97 -2550 0.82 -3445 0.84 -2597 0.75 -607 0.75 -356 N-1: PEARL-KEELER 500 KV 0.82 -1092 0.88 -4004 0.75 -2539 0.98 -2199 0.83 -3247 0.85 -2292 0.75 -596 0.75 -349 N-1: PEARL-KEELER 500 KV + RAS 0.82 -1092 0.88 -4004 0.75 -2539 0.98 -2199 0.83 -3247 0.85 -2292 0.75 -596 0.75 -349 N-1: PINTO-FOUR CORNER 345 KV 0.82 -1109 0.87 -4283 0.75 -2586 0.97 -2570 0.81 -3432 0.84 -2620 0.74 -610 0.75 -358 N-1: PONDEROSA A 500/230 KV XFMR 0.82 -1107 0.87 -4288 0.75 -2579 0.97 -2578 0.81 -3455 0.84 -2636 0.74 -608 0.75 -357 N-1: PONDEROSA B 500/230 KV XFMR 0.82 -1105 0.87 -4289 0.75 -2578 0.97 -2581 0.81 -3460 0.84 -2639 0.74 -608 0.75 -357 N-1: RAVER-PAUL 500 KV 0.82 -1076 0.89 -3627 0.75 -2512 0.98 -2126 0.83 -3266 0.86 -2399 0.76 -580 0.75 -341 N-1: RAVER-TACOMA 500 KV 0.82 -1105 0.87 -4204 0.75 -2578 0.97 -2558 0.82 -3455 0.84 -2611 0.75 -607 0.75 -356 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.82 -1116 0.87 -4260 0.75 -2610 0.97 -2539 0.82 -3378 0.84 -2595 0.74 -614 0.75 -362 N-1: ROBINSON-HARRY ALLEN 500 KV 0.83 -1082 0.87 -4300 0.76 -2468 0.97 -2588 0.81 -3480 0.84 -2643 0.75 -604 0.75 -354 N-1: ROCK CK-WAUTOMA 500 KV 0.83 -1060 0.88 -3638 0.76 -2495 0.98 -2054 0.84 -3210 0.86 -2305 0.76 -571 0.76 -331 N-1: ROUND MTN-TABLE MTN 500 KV 0.83 -1082 0.87 -4186 0.75 -2494 0.97 -2448 0.82 -3094 0.85 -2525 0.75 -599 0.75 -349 N-1: ROUNDUP-LAGRANDE 230 KV 0.85 -1040 0.87 -4211 0.75 -2558 0.97 -2477 0.81 -3358 0.85 -2557 0.75 -599 0.75 -350 N-1: SCHULTZ-SICKLER 500 KV 0.82 -1101 0.88 -4009 0.75 -2575 0.97 -2524 0.82 -3451 0.84 -2587 0.75 -600 0.75 -353 N-1: SCHULTZ-VANTAGE 500 KV 0.82 -1106 0.86 -4036 0.75 -2579 0.97 -2542 0.82 -3447 0.84 -2598 0.75 -601 0.75 -353 N-1: SCHULTZ-WAUTOMA 500 KV 0.82 -1093 0.86 -3813 0.75 -2558 0.97 -2389 0.82 -3368 0.85 -2497 0.75 -583 0.75 -344 N-1: SIGURD-GLEN CANYON 230 KV 0.82 -1105 0.87 -4300 0.75 -2575 0.97 -3244 0.81 -3461 0.84 -2640 0.75 -607 0.75 -356 N-1: SLATT 500/230 KV XFMR 0.82 -1115 0.88 -4011 0.75 -2641 0.97 -2535 0.82 -3580 0.85 -2605 0.74 -603 0.75 -362 N-1: SLATT-LONGHORN 500 KV 0.82 -1092 0.87 -4177 0.75 -2549 0.97 -2455 0.82 -3384 0.85 -2552 0.75 -606 0.75 -355 N-1: SNOK TAP-SNOKING 500 KV 0.82 -1106 0.87 -4243 0.75 -2580 0.97 -2577 0.81 -3464 0.84 -2623 0.74 -607 0.75 -357 N-1: TABLE MTN-TESLA 500 KV 0.83 -1083 0.87 -4206 0.75 -2500 0.97 -2482 0.82 -3157 0.85 -2549 0.75 -598 0.75 -349 N-1: TABLE MTN-VACA DIXON 500 KV 0.83 -1071 0.87 -4149 0.76 -2455 0.97 -2404 0.82 -2925 0.85 -2481 0.75 -593 0.75 -345 N-1: VANTAGE 500/230 KV XFMR #1 0.82 -1104 0.87 -4319 0.75 -2579 0.97 -2574 0.81 -3459 0.84 -2636 0.74 -607 0.75 -357 N-1: VANTAGE 500/230 KV XFMR #2 0.82 -1104 0.87 -4319 0.75 -2579 0.97 -2573 0.81 -3459 0.84 -2635 0.74 -607 0.75 -357 N-1: WALLA WALLA-TALBOT 230 KV 0.82 -1126 0.91 -3971 0.75 -2588 0.97 -2588 0.81 -3468 0.84 -2642 0.75 -606 0.75 -353 N-1: WALLA WALLA-WALLULA 230 KV 0.83 -1066 0.93 -3691 0.75 -2576 0.97 -2580 0.81 -3458 0.84 -2639 0.75 -606 0.75 -356 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.83 -993 0.90 -2860 0.77 -2369 0.98 -1433 0.88 -2618 0.89 -1703 0.78 -523 0.76 -303 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.83 -1042 0.90 -3405 0.76 -2407 0.98 -1648 0.86 -2745 0.84 -1663 0.76 -580 0.75 -340 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.84 -975 0.92 -2930 0.77 -2234 0.98 -1249 0.89 -2369 0.89 -1541 0.76 -552 0.76 -322 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.83 -1040 0.89 -3522 0.76 -2424 0.98 -1764 0.86 -2895 0.86 -1978 0.76 -579 0.75 -338 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.83 -1033 0.89 -3438 0.76 -2377 0.98 -1587 0.86 -2850 0.86 -1927 0.76 -579 0.75 -338 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.83 -1023 0.88 -3381 0.76 -2444 0.98 -1799 0.85 -3022 0.87 -2122 0.76 -561 0.76 -324 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.83 -1044 0.88 -3509 0.76 -2486 0.98 -1982 0.85 -3115 0.87 -2229 0.76 -566 0.76 -326 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.82 -1159 0.88 -4188 0.76 -2630 0.97 -2823 0.81 -3744 0.83 -2816 0.86 -283 0.78 -221 N-2: BETHEL-CEDAR SP 500KV & BETHEL-ROUND BUTTE 230 KV 0.82 -1094 0.88 -4059 0.75 -2520 0.98 -2242 0.83 -3259 0.85 -2170 0.74 -609 0.75 -358 N-2: BETHEL-CEDAR SP 500KV & BETHEL-SANTIAM 230KV 0.82 -1092 0.88 -4065 0.75 -2516 0.98 -2248 0.83 -3258 0.85 -2238 0.74 -607 0.75 -357 N-2: BETHEL-CEDAR SP 500KV & SANTIAM-MIKKALO 500KV 0.83 -1086 0.89 -3900 0.75 -2493 0.98 -2098 0.84 -3104 0.85 -2106 0.75 -606 0.75 -356 Page 459 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.82 -1101 0.87 -4190 0.75 -2562 0.98 -2321 0.82 -3355 0.84 -2453 0.75 -607 0.75 -357 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.82 -1103 0.87 -4221 0.75 -2569 0.98 -2336 0.82 -3388 0.84 -2507 0.74 -608 0.75 -357 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.82 -823 0.87 -4129 0.78 -2103 0.97 -2388 0.82 -3260 0.85 -2494 0.75 -588 0.75 -341 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.82 -823 0.87 -4126 0.78 -2098 0.97 -2385 0.82 -3256 0.85 -2480 0.75 -587 0.75 -340 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.83 -1059 0.87 -4216 0.76 -2251 0.97 -2511 0.82 -3394 0.84 -2578 0.73 -610 0.74 -383 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.84 -1049 0.87 -4198 0.79 -2034 0.97 -2495 0.82 -3379 0.85 -2569 0.73 -586 0.74 -389 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.82 -1125 0.88 -4383 0.74 -2717 0.97 -2968 0.80 -3961 0.82 -2928 0.70 -582 0.79 -405 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.84 -1027 0.90 -3495 0.76 -2358 0.98 -1867 0.85 -2821 0.88 -2120 0.77 -536 0.76 -304 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.82 -986 0.88 -3934 0.76 -2452 0.97 -2281 0.83 -3187 0.86 -2408 0.76 -576 0.75 -336 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.83 -1083 0.89 -3855 0.75 -2493 0.98 -2672 0.84 -3055 0.80 -1735 0.75 -603 0.75 -355 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.82 -1099 0.89 -3768 0.75 -2566 0.97 -2481 0.81 -3421 0.85 -2565 0.75 -591 0.75 -349 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.82 -1101 0.88 -3930 0.75 -2570 0.97 -2495 0.82 -3432 0.84 -2573 0.75 -601 0.75 -353 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.82 -1103 0.88 -4014 0.75 -2573 0.97 -2516 0.82 -3442 0.84 -2586 0.75 -603 0.75 -354 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.82 -1102 0.88 -3979 0.75 -2573 0.97 -2529 0.82 -3447 0.84 -2593 0.75 -598 0.75 -352 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.82 -1105 0.88 -4099 0.75 -2579 0.97 -2560 0.81 -3457 0.84 -2612 0.75 -607 0.75 -357 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.82 -1070 0.85 -3115 0.76 -2554 0.98 -2217 0.83 -3344 0.86 -2363 0.78 -520 0.76 -317 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.82 -1079 0.90 -3078 0.76 -2529 0.98 -2201 0.83 -3317 0.86 -2427 0.77 -540 0.76 -322 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.82 -1103 0.88 -4044 0.75 -2579 0.97 -2553 0.82 -3461 0.84 -2607 0.75 -596 0.75 -353 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.81 -1169 0.86 -4725 0.74 -2826 0.97 -3183 0.79 -4218 0.81 -3137 0.72 -647 0.74 -401 N-2: DC-BIPOLE 0.84 -933 0.89 -3945 0.78 -2099 0.96 -2389 0.84 -2309 0.87 -2292 0.75 -577 0.75 -345 N-2: DOUBLE PALO VERDE 0.85 -563 0.96 -1815 0.80 -1993 0.99 -1335 0.92 -2200 0.92 -1658 0.80 -440 0.77 -276 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.82 -1106 0.87 -4162 0.75 -2580 0.97 -2550 0.80 -3556 0.84 -2606 0.74 -608 0.75 -357 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.82 -1104 0.88 -4027 0.75 -2577 0.97 -2518 0.82 -3445 0.84 -2586 0.75 -607 0.75 -356 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.82 -1124 0.87 -4320 0.74 -2682 0.97 -2770 0.81 -3696 0.83 -2778 0.83 -455 0.74 -456 N-2: GRASSLAND-CEDAR SP 500KV & SLATT-BUCKLEY 500KV 0.84 -1017 0.91 -3336 0.76 -2310 0.98 -1575 0.87 -2648 0.88 -1705 0.75 -584 0.75 -341 N-2: GRASSLAND-COYOTE 500KV & SLATT-LONGHORN 500KV 0.82 -984 0.91 -3326 0.77 -2415 0.98 -1692 0.86 -2866 0.89 -2010 0.76 -564 0.76 -325 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV + RAS 0.83 -1022 0.89 -4172 0.76 -2387 0.97 -2387 0.80 -2753 0.84 -2318 0.73 -628 0.74 -388 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV + RAS 0.83 -981 0.89 -4247 0.77 -2327 0.97 -3118 0.80 -3005 0.84 -2440 0.74 -609 0.75 -372 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV + RAS 0.82 -1128 0.86 -4807 0.75 -2523 0.97 -3304 0.79 -2845 0.83 -2525 0.72 -658 0.74 -413 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.82 -1101 0.82 -3248 0.75 -2571 0.97 -3137 0.82 -3386 0.85 -2532 0.75 -592 0.75 -351 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.83 -1069 0.84 -3627 0.76 -2510 0.98 -2863 0.83 -3295 0.85 -2423 0.75 -591 0.75 -342 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.82 -1122 0.91 -3798 0.75 -2576 0.91 -2434 0.82 -3268 0.88 -2324 0.74 -620 0.75 -366 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.82 -1094 0.88 -4054 0.75 -2533 0.96 -2974 0.82 -3224 0.82 -2210 0.75 -606 0.75 -356 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV + RAS 0.83 -967 0.91 -3843 0.77 -2313 0.98 -1985 0.84 -2770 0.85 -2136 0.74 -592 0.75 -358 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV + RAS 0.82 -1069 0.90 -4201 0.75 -2593 0.97 -2516 0.79 -3500 0.83 -2644 0.73 -629 0.74 -387 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.83 -1083 0.89 -3855 0.75 -2493 0.98 -2022 0.84 -3055 0.80 -1735 0.75 -603 0.75 -355 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.83 -1073 0.88 -3826 0.75 -2452 0.97 -2098 0.86 -2704 0.80 -1356 0.75 -595 0.75 -349 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.83 -1045 0.88 -3624 0.76 -2473 0.98 -1930 0.84 -3121 0.87 -2217 0.76 -573 0.76 -332 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.82 -1091 0.88 -3993 0.75 -2536 0.98 -2198 0.83 -3230 0.86 -2274 0.75 -596 0.75 -349 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.82 -1094 0.88 -4018 0.75 -2539 0.98 -2145 0.83 -3239 0.84 -2237 0.75 -606 0.75 -356 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.82 -1083 0.88 -3996 0.75 -2530 0.98 -2185 0.83 -3261 0.85 -2362 0.75 -605 0.75 -355 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.82 -1089 0.88 -4007 0.75 -2535 0.98 -2212 0.83 -3273 0.85 -2407 0.75 -601 0.75 -352 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 + RAS 0.82 -1092 0.87 -4193 0.75 -2673 0.97 -2849 0.80 -3819 0.83 -2834 0.70 -726 0.76 -363 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.83 -1102 0.87 -4786 0.76 -2458 0.97 -2935 0.79 -2324 0.85 -2749 0.73 -645 0.74 -389 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.83 -1003 0.89 -3327 0.76 -2378 0.98 -2296 0.86 -2925 0.88 -1999 0.76 -555 0.76 -321 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.83 -1050 0.88 -3857 0.76 -2467 0.97 -2127 0.84 -3212 0.86 -2340 0.75 -598 0.75 -349 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.83 -1047 0.89 -3804 0.76 -2462 0.98 -1999 0.84 -3184 0.86 -2294 0.75 -598 0.75 -350 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.83 -1080 0.87 -4088 0.75 -2538 0.97 -2404 0.82 -3352 0.85 -2480 0.75 -606 0.75 -356 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.85 -962 0.87 -4247 0.70 -2094 0.97 -2514 0.82 -3190 0.85 -2560 0.77 -523 0.76 -303 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.82 -1100 0.89 -3833 0.75 -2571 0.97 -2491 0.82 -3434 0.85 -2569 0.75 -594 0.75 -351 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.82 -1061 0.94 -2023 0.76 -2575 1.00 -1035 0.93 -2600 0.93 -1299 0.75 -566 0.75 -360 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.82 -1062 0.94 -2072 0.76 -2582 1.00 -1069 0.93 -2628 0.93 -1339 0.75 -566 0.75 -360 Page 460 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Brownlee Hanford Hemingway John Day Malin Marion Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.83 -1077 0.89 -3573 0.75 -2513 0.98 -2108 0.83 -3263 0.86 -2389 0.76 -581 0.75 -341 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV + RAS 0.82 -1092 0.88 -4004 0.75 -2540 0.98 -2200 0.83 -3246 0.85 -2287 0.75 -597 0.75 -350 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.82 -1104 0.87 -4265 0.75 -2573 0.98 -2359 0.81 -3447 0.84 -2547 0.74 -608 0.75 -357 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.82 -1103 0.87 -4257 0.75 -2572 0.98 -2375 0.81 -3427 0.83 -2525 0.74 -608 0.75 -357 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.82 -1107 0.87 -4213 0.75 -2583 0.97 -2576 0.81 -3465 0.84 -2622 0.74 -610 0.75 -358 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.82 -1101 0.88 -4057 0.75 -2570 0.97 -2504 0.82 -3436 0.84 -2582 0.75 -602 0.75 -354 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.83 -1074 0.89 -3600 0.75 -2506 0.98 -2093 0.83 -3220 0.86 -2365 0.76 -579 0.75 -340 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.82 -1133 0.90 -3598 0.75 -2736 0.97 -2689 0.80 -3908 0.84 -2793 0.74 -619 0.75 -381 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.82 -1132 0.90 -3701 0.75 -2732 0.97 -2695 0.80 -3899 0.84 -2796 0.73 -620 0.75 -381 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.82 -1096 0.88 -3789 0.75 -2557 0.97 -2399 0.82 -3369 0.85 -2517 0.75 -602 0.75 -353 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.82 -1105 0.87 -4139 0.75 -2578 0.97 -3201 0.82 -3445 0.84 -2598 0.74 -607 0.75 -357 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.82 -1104 0.87 -4178 0.75 -2576 0.97 -2545 0.82 -3447 0.84 -2603 0.75 -607 0.75 -356 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV + RAS 0.82 -1149 0.85 -5184 0.75 -2584 0.97 -3355 0.78 -2750 0.83 -3104 0.72 -659 0.74 -397 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV + RAS 0.81 -1166 0.84 -4110 0.74 -2832 0.97 -3088 0.79 -4211 0.81 -3014 0.73 -625 0.74 -390 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV + RAS 0.82 -1136 0.86 -4086 0.75 -2699 0.97 -2839 0.80 -3815 0.83 -2835 0.74 -617 0.75 -375 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.82 -1095 0.91 -3571 0.75 -2701 0.97 -2782 0.80 -3372 0.84 -2760 0.73 -630 0.74 -405 N-2: TAFT-BELL 500 KV & BELL-LANCASTER 230 KV 0.82 -1102 0.87 -4227 0.75 -2574 0.97 -2575 0.81 -3463 0.84 -2636 0.79 -492 0.75 -343 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.82 -1108 0.87 -4185 0.75 -2586 0.97 -2570 0.81 -3456 0.84 -2617 0.77 -547 0.75 -361 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV 0.82 -1102 0.87 -4227 0.75 -2574 0.97 -2575 0.81 -3463 0.84 -2636 0.79 -492 0.75 -343 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.82 -1107 0.87 -4232 0.75 -2581 0.97 -2565 0.81 -3447 0.84 -2615 0.77 -546 0.75 -360 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV 0.82 -1106 0.87 -4237 0.75 -2580 0.97 -2566 0.81 -3449 0.84 -2617 0.78 -535 0.75 -357 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.82 -1132 0.88 -4025 0.76 -2578 0.97 -2587 0.81 -3494 0.84 -2629 0.80 -469 0.77 -282 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.83 -1048 0.88 -3517 0.76 -2476 0.97 -2060 0.84 -3161 0.86 -2247 0.76 -562 0.76 -326 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.83 -1048 0.88 -3517 0.76 -2476 0.97 -2721 0.84 -3161 0.86 -2247 0.76 -562 0.76 -326 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.82 -1092 0.88 -3638 0.75 -2544 0.98 -2895 0.82 -3333 0.85 -2478 0.75 -598 0.75 -352 Page 461 of 776 Appendix F – 16lhs2a_2250idnw_nww Base Case Transient Stability Plots Figure F9: N-1 Loss of Hemingway-Summer Lake 500 kV Line (Angle & Voltage Plots) Page 462 of 776 Appendix F – 16lhs2a_2250idnw_nww Base Case Transient Stability Plots Figure F10: N-1 Loss of Hatwai-Lower Granite 500 kV Line (Angle & Voltage Plots) Page 463 of 776 Appendix F – 16lhs2a_2250idnw_nww Base Case Transient Stability Plots Figure F11: Bi-Pole Loss – Pacific DC Intertie (Angle & Voltage Plots) Page 464 of 776 Appendix F – 16lhs2a_2250idnw_nww Base Case Transient Stability Plots Figure F12: Loss of Two Palo Verde Units (Angle & Voltage Plots) Page 465 of 776 Appendix F – 16lhs2a_2250idnw_nww Base Case Transient Stability Plots Figure F13: N-2 Loss of Brownlee-Hells Canyon &Oxbow-Lolo 230 kV Lines (Angle & Voltage Plots) Page 466 of 776 Appendix F – 16lhs2a_2250idnw_nww Base Case Transient Stability Plots Figure F14: N-2 Loss of Malin-Round Mt #1 & #2 500 kV Lines (Angle & Voltage Plots) Page 467 of 776 Appendix F - 16hs2a_2250idnw_nww Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 FACRI insert of Ft Rock Series Caps Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Bridger1 22 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV Various 11.4% 0.851 11.4% 59.882 Damped Hemingway 500 kV N-1 8 Libby 1-5 Generation Marengo2 34.5 Marengo1 34.5 Weston P 69 Hardingn 13.8 Stable & 3 Cy 3PH Hatwai-Lower Granite 500 kV 18 Lancaster Generation 16.3% 0.796 8.0% 59.823 Damped Hatwai 500 kV Bi-pole Block FACRI insertion of Ft Rock Series Caps, Malin Shunt CapC1 Cmbhl w2 0.6 Midpt ~9 230 Statelin 69 Sync_g19 13.8 Stable & PDCI Bipole Various 7.5% 0.885 7.5% 59.769 Damped Tracy&Olinda React Switching NW 2550 MW Gen Drop N-2 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1&C2, CaptJack Shunt Cap C1 Cmbhl w2 0.6 Cmbhl w2 0.6 Statelin 69 Sync_g19 13.8 Stable & Loss of 2 Palo Verde units Various 16.5% 0.836 7.1% 59.756 Damped N-2 Brownlee-Hells Canyon 230 kV Tripped 1 Hells Cyn Unit (110 MW) Elkhrn_W 34.5 Ptrsnflt 230 Locust 138 Oxbow1-2 13.8 Stable & 4 Cy LLG Oxbow-Lolo 230 kV 5 10.5% 0.899 7.6% 59.754 Damped Oxbow 230 kV N-2 Malin-Round Mt #1 500 kV Chief Jo Braking Resistor Mtshasta 69 Yuba 69 Mtshasta 69 Kno 13g6 13.8 Stable & 4 Cy 3PH Malin-Round Mt #2 500 kV Various Tracy&Olinda React Switching 15.8% 0.802 15.8% 59.767 Damped Malin 500 kV Round Mt-Table Mt #2 500 kV NW 2400 MW Gen Drop FACRI insert of Ft Rock Series Caps Flash Malin-Round Mt S-Caps Page 468 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) Page 469 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) Page 470 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 80 MVR BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS SJUAN_G1_ 22.0 (10318) TO 63 MVR BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 Page 471 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 Page 472 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 2 SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 Page 473 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Page 474 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Drycreek-Wala Ava 230 kV SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Hatwai 500 kV + RAS + PTSN OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS + PTSN OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS + PTSN OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Hatwai 500 kV + RAS + PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR Page 475 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Lolo 230 kV SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-Low Gran 500 kV SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR Page 476 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV CLOSE Shunt HUMBOLT1_ 24.9 (64216) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 5.4 MVR N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS N POWDER_ 34.5 (60313) TO 9 MVR N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Midpoint-Humboldt 345 kV OPEN Shunt GONDER_230.0 (64056) #v N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s Page 477 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Talbot 230 kV SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134 MVR N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-1: Walla Walla-Wallula 230 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Ashe-Slatt 500 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 17 MVR N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 Page 478 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap MIKKALO_500.0 (43970) TO MKLOSNT2_500.0 (43971) CKT 2 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap SANTIAM_500.0 (40941) TO SANTMKO2_500.0 (43492) CKT 2 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt PTRSNFLT_230.0 (62030) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt OREBASIN_230.0 (66145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt FRANNIE2_ 34.5 (67145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARLAND1_ 34.5 (67147) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 Page 479 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: Coulee-Schultz #1 & #2 500 kV SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.5 MVR N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR Page 480 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS HOPKR W2_ 34.5 (47802) TO 14.4 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 Page 481 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Load MILCTYDC_230.0 (63010) #D1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Shunt MILCTYCD 230.0 (63010) #b1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator Page 482 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 Page 483 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) Page 484 of 776 Appendix F - 16hs2a_2250idnw_N_nww Base Case Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 485 of 776 Appendix G 16hs2a_2250idnw_N_wom Base Case (High West of McNary & West of Slatt) Page 486 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G1: 16hs2sa_2250idnw_N_wom Case Pre-Contingency 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 227.0 Mvar 1.09 puPONDROSA 0.0 Mvar 1 6 3 7 M W - 1 6 1 M v a r 1 5 2 2 M W - 1 9 7 M v a r 1 7 2 3 M W - 2 5 1 M v a r 1599 MW -197 Mvar 257 MW 30 Mvar 224 MW 30 Mvar 209 MW 71 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 352.1 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD449.3 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.6 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.03 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.1 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 187.4 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.05 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 3 5 7 M W - 5 6 M v a r 1 9 2 7 M W - 6 1 M v a r 1765 MW -111 Mvar 1769 MW -114 Mvar 554 MW -38 Mvar 1023 MW 26 Mvar 1708 MW -169 Mvar 1173 MW -122 Mvar 1205 MW -185 Mvar 239 MW -88 Mvar 1215 MW -192 Mvar 1289 MW 68 Mvar 187 MW 184 Mvar 5 0 0 M W 9 M v a r 187 MW 114 Mvar 412 MW -19 Mvar 854 MW 97 Mvar 167 MW 11 Mvar 158 MW 7 Mvar 751 MW 55 Mvar 1.05 puANTICLIN 364 MW -10 Mvar 364 MW -12 Mvar 13 MW 105 Mvar 12 MW 90 Mvar 317 MW -24 Mvar 412 MW -19 Mvar 187 MW 21 Mvar 248 MW 66 Mvar 578 MW -85 Mvar 162 MW -58 Mvar 9 MW -48 Mvar 5 MW 52 Mvar 568 MW 140 Mvar 548 MW 26 Mvar 687 MW -227 Mvar 1360 MW -207 Mvar 216 MW -36 Mvar 143 MW -28 Mvar 171 MW -28 Mvar 151 MW -19 Mvar 48 MW 2 Mvar 2 7 3 M W 1 4 M v a r 70 MW 14 Mvar 167 MW -49 Mvar 16 MW -50 Mvar 7 MW 24 Mvar 9 MW -21 Mvar 8 MW -24 Mvar 4 6 3 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 95.1 Mvar 0.0 Mvar 1.01 puONTARIO 48 MW 2 Mvar 35 MW 26 Mvar 356 MW 50 Mvar 3 1 7 M W - 4 5 M v a r 71 MW -9 Mvar 391 MW -59 Mvar 308 MW -16 Mvar 308 MW -16 Mvar 317 MW -22 Mvar 320 MW -43 Mvar 200 MW -53 Mvar 258 MW -65 Mvar 1 0 M W 4 0 M v a r 1 0 M W 4 0 M v a r 1373 MW -88 Mvar 191 MW 205 Mvar 798 MW -73 Mvar 1298 MW -59 Mvar 911 MW -40 Mvar 847 MW -51 Mvar 666 MW -1 Mvar 423 MW -2 Mvar 416 MW -2 Mvar 581 MW -20 Mvar 595 MW -21 Mvar 254 MW 7 Mvar 5 1 2 M W 1 0 3 M v a r 1468 MW -121 Mvar 1 5 3 3 M W - 2 3 M v a r 1 4 9 4 M W 5 M v a r 1 3 8 3 M W - 2 6 M v a r 1385 MW -153 Mvar ID-NW = -2250 MW Grassland = -1449 MW Summer Lake = -209 MW Lolo = -317 MW Walla Walla = -150 MW LaGrande = -143 MW Midpoint West = -1674 MW Borah West = -354 MW Idaho-Sierra = 500 MW N of John Day = 8401 MW COI = 4649 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 5299 MW W of Slatt = 5798 MW Alturas Project = 150 MW Path C = -1599 MW Montana Southeast = 600 MW TOT 2B1 = 70 MW TOT 2C = 195 MW 210 MW -80 Mvar 122 MW 65 Mvar 1295 MW -22 Mvar 1242 MW -5 Mvar 21 M W 76 M v a r 1 0 6 8 M W - 9 6 M v a r 1 4 4 9 M W 2 0 8 M v a r 1389 MW -374 Mvar Page 487 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G2: 16la1sa_3400idnw_N_wom Case after the contingency BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.04 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 220.2 Mvar 1.05 puPONDROSA 0.0 Mvar 1 8 5 3 M W - 1 5 7 M v a r 1 7 1 2 M W - 1 8 8 M v a r 2 2 5 8 M W - 2 8 9 M v a r 2152 MW -284 Mvar 347 MW 26 Mvar 304 MW 28 Mvar 978 MW -241 Mvar 1.01 puHEMINWAY 1.06 pu JOHN DAY 425.9 Mvar 1.06 puMCNARY 1.06 puSLATT 338.4 Mvar 1.06 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 171.6 Mvar 1.06 puCOYOTE 1.07 puLOW MON 0.0 Mvar 0.99 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD440.5 Mvar 1.05 puCDR SPRG 1.04 puBUCKLEY 0.99 puLAGRANDE 50.9 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 154.4 Mvar 115.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-86.9 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 180.1 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.00 puIDAHO-NV 1.03 puKINPORT 185.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.8 Mvar 0.0 Mvar 0.0 Mvar 1.05 puMARION 0.0 Mvar 1 7 3 9 M W 1 2 M v a r 2 5 5 0 M W 2 4 3 M v a r 2099 MW 75 Mvar 2105 MW 73 Mvar 782 MW -75 Mvar 0 MW 0 Mvar 778 MW -195 Mvar 243 MW -171 Mvar 1417 MW -36 Mvar 1779 MW 77 Mvar 498 MW -115 Mvar 930 MW -1 Mvar 61 MW 159 Mvar 4 3 7 M W - 8 M v a r 61 MW 92 Mvar 287 MW -29 Mvar 630 MW 62 Mvar 133 MW 8 Mvar 124 MW 4 Mvar 697 MW 32 Mvar 1.05 puANTICLIN 382 MW -3 Mvar 382 MW -5 Mvar 75 MW 109 Mvar 66 MW 92 Mvar 332 MW -15 Mvar 287 MW -29 Mvar 159 MW 30 Mvar 257 MW 72 Mvar 584 MW -84 Mvar 125 MW -61 Mvar 21 MW 48 Mvar 37 MW 52 Mvar 641 MW 157 Mvar 621 MW 23 Mvar 420 MW -212 Mvar 1596 MW -189 Mvar 299 MW -20 Mvar 221 MW -50 Mvar 248 MW -63 Mvar 154 MW -21 Mvar 52 MW 4 Mvar 3 6 2 M W 6 4 M v a r 151 MW 23 Mvar 277 MW -46 Mvar 24 MW 51 Mvar 48 MW 26 Mvar 32 MW 22 Mvar 33 MW 27 Mvar 5 6 5 M W 1 7 M v a r HORSEFLT 0.99 puBOISEBCH 91.0 Mvar 0.0 Mvar 0.99 puONTARIO 52 MW 4 Mvar 53 MW 37 Mvar 418 MW 83 Mvar 3 9 8 M W - 6 2 M v a r 135 MW -45 Mvar 436 MW -89 Mvar 354 MW -17 Mvar 354 MW -17 Mvar 365 MW -24 Mvar 368 MW -55 Mvar 231 MW -68 Mvar 298 MW -84 Mvar 1 0 M W 4 6 M v a r 1 0 M W 4 5 M v a r 1615 MW 59 Mvar 11 MW -219 Mvar 848 MW -49 Mvar 1291 MW -6 Mvar 856 MW -18 Mvar 796 MW -33 Mvar 617 MW 14 Mvar 370 MW 2 Mvar 363 MW 3 Mvar 505 MW -14 Mvar 517 MW -15 Mvar 98 MW -14 Mvar 5 9 6 M W 1 5 7 M v a r 2275 MW -187 Mvar 1 7 0 6 M W - 5 1 M v a r 1 6 7 4 M W - 1 7 M v a r 1 1 3 7 M W - 1 3 9 M v a r 1139 MW -239 Mvar ID-NW = -1839 MW Grassland = 0 MW Summer Lake = -978 MW Lolo = -398 MW Walla Walla = -254 MW LaGrande = -221 MW Midpoint West = -1405 MW Borah West = -153 MW Idaho-Sierra = 437 MW N of John Day = 8167 MW COI = 4793 MW PDCI = 3101 MW ID-MT = -381 MW W of McNary = 4905 MW W of Slatt = 6457 MW Alturas Project = 171 MW Path C = -1426 MW Montana Southeast = 689 MW TOT 2B1 = 20 MW TOT 2C = 144 MW 993 MW -121 Mvar 13 MW -81 Mvar 1085 MW 48 Mvar 1045 MW 26 Mvar 21 M W 86 M v a r 1 1 7 3 M W 1 8 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 488 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G3: 16la1sa_3400idnw_N_wom Case after the contingency BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.04 puPONDROSB 1.04 puGRIZZLY 0.0 Mvar 1.04 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 221.3 Mvar 1.04 puPONDROSA 0.0 Mvar 1 8 7 5 M W - 1 5 2 M v a r 1 7 3 3 M W - 1 8 2 M v a r 2 2 9 3 M W - 2 9 7 M v a r 2187 MW -298 Mvar 356 MW 23 Mvar 312 MW 25 Mvar 1006 MW -283 Mvar 0.98 puHEMINWAY 1.05 pu JOHN DAY 423.1 Mvar 1.06 puMCNARY 1.06 puSLATT 336.5 Mvar 1.06 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 170.8 Mvar 1.06 puCOYOTE 1.07 puLOW MON 0.0 Mvar 0.98 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.07 puHANFORD437.9 Mvar 1.05 puCDR SPRG 1.04 puBUCKLEY 0.98 puLAGRANDE 50.2 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 0.98 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 152.9 Mvar 114.7 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.00 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.1 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 180.2 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.00 puIDAHO-NV 1.03 puKINPORT 185.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.8 Mvar 0.0 Mvar 0.0 Mvar 1.05 puMARION 0.0 Mvar 1 7 6 0 M W 2 2 M v a r 2 5 6 7 M W 2 6 6 M v a r 2130 MW 96 Mvar 2135 MW 94 Mvar 778 MW -75 Mvar 0 MW 0 Mvar 781 MW -198 Mvar 247 MW -179 Mvar 1421 MW -26 Mvar 1783 MW 99 Mvar 505 MW -117 Mvar 940 MW 33 Mvar 66 MW 166 Mvar 4 4 2 M W - 7 M v a r 66 MW 99 Mvar 293 MW -21 Mvar 634 MW 88 Mvar 136 MW 8 Mvar 126 MW 4 Mvar 697 MW 38 Mvar 1.05 puANTICLIN 381 MW -3 Mvar 381 MW -5 Mvar 70 MW 110 Mvar 61 MW 93 Mvar 329 MW -11 Mvar 293 MW -21 Mvar 159 MW 33 Mvar 256 MW 73 Mvar 582 MW -82 Mvar 127 MW -59 Mvar 19 MW 49 Mvar 34 MW 53 Mvar 636 MW 155 Mvar 613 MW 24 Mvar 418 MW -210 Mvar 1603 MW -187 Mvar 302 MW -18 Mvar 224 MW -50 Mvar 250 MW -64 Mvar 156 MW -23 Mvar 53 MW 4 Mvar 3 6 5 M W 6 9 M v a r 153 MW 25 Mvar 284 MW -46 Mvar 25 MW 51 Mvar 48 MW 26 Mvar 32 MW 22 Mvar 34 MW 27 Mvar 5 7 0 M W 2 3 M v a r HORSEFLT 0.98 puBOISEBCH 89.6 Mvar 0.0 Mvar 0.99 puONTARIO 53 MW 4 Mvar 54 MW 38 Mvar 422 MW 85 Mvar 4 0 3 M W - 6 3 M v a r 137 MW -48 Mvar 434 MW -84 Mvar 353 MW -13 Mvar 353 MW -13 Mvar 364 MW -19 Mvar 368 MW -50 Mvar 232 MW -67 Mvar 301 MW -83 Mvar 1 2 M W 4 5 M v a r 1 2 M W 4 4 M v a r 1622 MW 68 Mvar 18 MW 215 Mvar 839 MW -50 Mvar 1289 MW -10 Mvar 858 MW -22 Mvar 798 MW -36 Mvar 619 MW 12 Mvar 372 MW 3 Mvar 365 MW 4 Mvar 508 MW -16 Mvar 519 MW -17 Mvar 104 MW -8 Mvar 6 0 0 M W 1 6 0 M v a r 2285 MW -184 Mvar 1 7 2 7 M W - 5 0 M v a r 1 6 9 4 M W - 1 6 M v a r 1 1 4 3 M W - 1 3 4 M v a r 1145 MW -235 Mvar ID-NW = -1881 MW Grassland = 0 MW Summer Lake = -1006 MW Lolo = -403 MW Walla Walla = -260 MW LaGrande = -224 MW Midpoint West = -1423 MW Borah West = -165 MW Idaho-Sierra = 442 MW N of John Day = 8268 MW COI = 4854 MW PDCI = 3101 MW ID-MT = -383 MW W of McNary = 4921 MW W of Slatt = 6492 MW Alturas Project = 176 MW Path C = -1436 MW Montana Southeast = 702 MW TOT 2B1 = 26 MW TOT 2C = 148 MW 1021 MW -143 Mvar 0 MW 0 Mvar 1101 MW 39 Mvar 1062 MW 19 Mvar 23 M W 85 M v a r 1 1 8 0 M W 2 8 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 489 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G4: 16la1sa_3400idnw_N_wom Case after the contingency BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 234.4 Mvar 1.09 puPONDROSA 0.0 Mvar 1 6 6 3 M W - 1 3 5 M v a r 1 5 5 1 M W - 1 7 0 M v a r 1 6 0 1 M W - 2 4 1 M v a r 1456 MW -183 Mvar 231 MW 36 Mvar 202 MW 35 Mvar 162 MW -44 Mvar 0.98 puHEMINWAY 1.09 pu JOHN DAY 448.6 Mvar 1.07 puMCNARY 1.09 puSLATT 353.9 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 176.3 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 0.99 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD450.4 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 0.99 puLAGRANDE 50.9 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 0.99 puHURICANE 0.99 puQUARTZ 1.01 puBROWNLEE 153.0 Mvar 114.8 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.00 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-86.2 Mvar 1.06 puBORAH 1.01 puMIDPOINT 0.0 Mvar 176.8 Mvar 1.07 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.01 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 182.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.2 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 3 4 9 M W - 4 3 M v a r 1 9 3 6 M W - 4 4 M v a r 1737 MW -102 Mvar 1741 MW -105 Mvar 571 MW -35 Mvar 1047 MW 40 Mvar 1592 MW -205 Mvar 1057 MW -150 Mvar 1190 MW -185 Mvar 355 MW -52 Mvar 1084 MW -214 Mvar 0 MW 0 Mvar 983 MW 97 Mvar 3 7 8 M W - 2 3 M v a r 982 MW -36 Mvar 154 MW 12 Mvar 154 MW 39 Mvar 37 MW -28 Mvar 51 MW -25 Mvar 1456 MW 70 Mvar 1.04 puANTICLIN 409 MW 10 Mvar 408 MW 8 Mvar 408 MW 50 Mvar 349 MW 38 Mvar 526 MW -65 Mvar 154 MW 12 Mvar 141 MW 20 Mvar 292 MW 66 Mvar 628 MW -115 Mvar 13 MW 64 Mvar 185 MW 23 Mvar 213 MW 26 Mvar 477 MW 185 Mvar 568 MW 52 Mvar 567 MW -266 Mvar 1336 MW -199 Mvar 291 MW -13 Mvar 213 MW -38 Mvar 240 MW -50 Mvar 158 MW -23 Mvar 55 MW 2 Mvar 3 5 3 M W 6 7 M v a r 134 MW 29 Mvar 272 MW -42 Mvar 15 MW 56 Mvar 39 MW 30 Mvar 23 MW 27 Mvar 25 MW 31 Mvar 5 6 0 M W 2 4 M v a r HORSEFLT 0.98 puBOISEBCH 89.3 Mvar 0.0 Mvar 0.99 puONTARIO 55 MW 2 Mvar 51 MW 38 Mvar 418 MW 85 Mvar 3 9 7 M W - 5 8 M v a r 135 MW -48 Mvar 433 MW -80 Mvar 352 MW -10 Mvar 352 MW -10 Mvar 363 MW -16 Mvar 367 MW -47 Mvar 230 MW -63 Mvar 297 MW -78 Mvar 4 5 M W - 4 9 M v a r 4 5 M W - 4 8 M v a r 1349 MW -91 Mvar 172 MW 200 Mvar 774 MW -75 Mvar 1254 MW -72 Mvar 876 MW -49 Mvar 814 MW -62 Mvar 635 MW -9 Mvar 389 MW -14 Mvar 382 MW -13 Mvar 532 MW -38 Mvar 545 MW -39 Mvar 154 MW -38 Mvar 5 9 1 M W 1 6 2 M v a r 1507 MW -104 Mvar 1 5 6 8 M W 5 M v a r 1 5 2 3 M W 3 1 M v a r 1 6 1 1 M W 7 0 M v a r 1614 MW -92 Mvar ID-NW = -1887 MW Grassland = -1194 MW Summer Lake = 162 MW Lolo = -397 MW Walla Walla = -249 MW LaGrande = -213 MW Midpoint West = -490 MW Borah West = 703 MW Idaho-Sierra = 378 MW N of John Day = 8237 MW COI = 4904 MW PDCI = 3101 MW ID-MT = -362 MW W of McNary = 5122 MW W of Slatt = 5845 MW Alturas Project = 190 MW Path C = -1396 MW Montana Southeast = 647 MW TOT 2B1 = 12 MW TOT 2C = 135 MW 161 MW 116 Mvar 0 MW 0 Mvar 1259 MW -20 Mvar 1212 MW -9 Mvar 91 M W -94 M v a r 1 0 5 8 M W - 1 0 0 M v a r 1 1 9 4 M W - 1 0 M v a r 1154 MW -181 Mvar Page 490 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G5: 16la1sa_3400idnw_N_wom Case after the contingency N-1: Hemingway-Grassland 500 kV + PTSN Shunt 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.06 puGRIZZLY 0.0 Mvar 1.06 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 459.2 Mvar 1.06 puPONDROSA 0.0 Mvar 1 8 1 4 M W - 1 4 7 M v a r 1 6 8 4 M W - 1 8 1 M v a r 2 2 3 5 M W - 2 8 9 M v a r 2142 MW -284 Mvar 380 MW 15 Mvar 333 MW 19 Mvar 1004 MW -281 Mvar 1.03 puHEMINWAY 1.07 pu JOHN DAY 434.9 Mvar 1.06 puMCNARY 1.07 puSLATT 344.2 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.7 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 0.99 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD444.8 Mvar 1.07 puCDR SPRG 1.06 puBUCKLEY 0.99 puLAGRANDE 51.3 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 155.6 Mvar 116.7 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-89.3 Mvar 1.09 puBORAH 1.03 puMIDPOINT 0.0 Mvar 185.3 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.01 puIDAHO-NV 1.04 puKINPORT 188.2 Mvar 1.09 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 6 6 0 M W 1 7 M v a r 2 2 5 6 M W 1 1 4 M v a r 2047 MW 36 Mvar 2052 MW 33 Mvar 575 MW -60 Mvar 1182 MW 100 Mvar 1216 MW -170 Mvar 682 MW -138 Mvar 1309 MW -104 Mvar 1039 MW -1 Mvar 828 MW -140 Mvar 951 MW 116 Mvar 58 MW 207 Mvar 4 3 9 M W 2 M v a r 58 MW 138 Mvar 292 MW 16 Mvar 646 MW 136 Mvar 135 MW 23 Mvar 125 MW 19 Mvar 694 MW 49 Mvar 1.05 puANTICLIN 381 MW -15 Mvar 381 MW -16 Mvar 72 MW 91 Mvar 63 MW 76 Mvar 331 MW -12 Mvar 292 MW 16 Mvar 160 MW 40 Mvar 255 MW 66 Mvar 581 MW -86 Mvar 125 MW -46 Mvar 20 MW 37 Mvar 36 MW 41 Mvar 641 MW 127 Mvar 617 MW 5 Mvar 525 MW -219 Mvar 1476 MW -187 Mvar 289 MW -19 Mvar 211 MW -43 Mvar 239 MW -54 Mvar 155 MW -22 Mvar 53 MW 3 Mvar 3 5 1 M W 6 1 M v a r 138 MW 24 Mvar 268 MW -46 Mvar 17 MW 52 Mvar 41 MW 27 Mvar 25 MW 23 Mvar 26 MW 28 Mvar 5 5 6 M W 1 2 M v a r HORSEFLT 0.99 puBOISEBCH 92.4 Mvar 0.0 Mvar 1.00 puONTARIO 53 MW 3 Mvar 51 MW 36 Mvar 414 MW 79 Mvar 3 9 3 M W - 6 1 M v a r 131 MW -51 Mvar 433 MW -87 Mvar 350 MW -23 Mvar 350 MW -23 Mvar 361 MW -29 Mvar 364 MW -59 Mvar 229 MW -68 Mvar 296 MW -84 Mvar 1 2 M W 4 0 M v a r 1 2 M W 4 0 M v a r 1492 MW -7 Mvar 90 MW 209 Mvar 803 MW -59 Mvar 1265 MW -36 Mvar 866 MW -30 Mvar 805 MW -44 Mvar 626 MW 6 Mvar 379 MW -3 Mvar 372 MW -2 Mvar 518 MW -22 Mvar 530 MW -23 Mvar 126 MW -18 Mvar 5 8 8 M W 1 5 3 M v a r 1888 MW -141 Mvar 1 6 7 8 M W - 3 4 M v a r 1 6 4 8 M W - 2 M v a r 1 1 0 2 M W - 1 0 2 M v a r 1103 MW -195 Mvar ID-NW = -1843 MW Grassland = 0 MW Summer Lake = -1004 MW Lolo = -393 MW Walla Walla = -245 MW LaGrande = -211 MW Midpoint West = -1416 MW Borah West = -160 MW Idaho-Sierra = 439 MW N of John Day = 8211 MW COI = 4810 MW PDCI = 3101 MW ID-MT = -383 MW W of McNary = 5042 MW W of Slatt = 6829 MW Alturas Project = 173 MW Path C = -1429 MW Montana Southeast = 680 MW TOT 2B1 = 20 MW TOT 2C = 143 MW 1019 MW -158 Mvar 6 MW -121 Mvar 1188 MW 19 Mvar 1143 MW 15 Mvar 24 M W 75 M v a r 1 0 8 6 M W - 5 1 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 491 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G6: 16la1sa_3400idnw_N_wom Case after the contingency N-2: Double Palo Verde 1.08 puMALIN 0.0 Mvar 228.4 Mvar 228.4 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 229.1 Mvar 229.1 Mvar 0.0 Mvar 1.10 puPONDROSB 1.09 puGRIZZLY 0.0 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 221.4 Mvar 1.11 puPONDROSA 0.0 Mvar 2 0 2 9 M W - 4 1 9 M v a r 1 8 5 0 M W - 3 8 4 M v a r 2 3 1 8 M W - 6 3 5 M v a r 2226 MW -271 Mvar 249 MW 95 Mvar 217 MW 87 Mvar 429 MW 33 Mvar 1.02 puHEMINWAY 1.08 pu JOHN DAY 442.3 Mvar 1.06 puMCNARY 1.08 puSLATT 346.9 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.05 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.9 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD437.7 Mvar 1.07 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.02 puWALA AVA 1.01 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 158.9 Mvar 119.2 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-86.4 Mvar 1.07 puBORAH 1.01 puMIDPOINT 0.0 Mvar 177.9 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.97 puIDAHO-NV 1.02 puKINPORT 183.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.3 Mvar 0.0 Mvar 0.0 Mvar 1.08 puMARION 0.0 Mvar 1 7 4 4 M W - 1 5 1 M v a r 2 1 7 1 M W - 7 6 M v a r 2227 MW -199 Mvar 2232 MW -203 Mvar 407 MW -28 Mvar 1008 MW 19 Mvar 1754 MW -183 Mvar 1220 MW -150 Mvar 1282 MW -167 Mvar 330 MW -44 Mvar 1338 MW -213 Mvar 1436 MW 67 Mvar 250 MW 168 Mvar 5 4 8 M W 1 0 M v a r 250 MW 97 Mvar 485 MW -36 Mvar 922 MW 94 Mvar 196 MW 2 Mvar 188 MW -2 Mvar 844 MW 69 Mvar 1.05 puANTICLIN 378 MW 9 Mvar 378 MW 8 Mvar 47 MW -114 Mvar 39 MW -98 Mvar 273 MW -30 Mvar 485 MW -36 Mvar 174 MW 13 Mvar 245 MW 74 Mvar 589 MW -87 Mvar 183 MW -68 Mvar 39 MW -56 Mvar 27 MW -60 Mvar 598 MW 173 Mvar 615 MW 34 Mvar 746 MW -189 Mvar 1477 MW -247 Mvar 213 MW -35 Mvar 139 MW -27 Mvar 168 MW -27 Mvar 164 MW -29 Mvar 62 MW -2 Mvar 2 7 0 M W 1 5 M v a r 41 MW 24 Mvar 168 MW -54 Mvar 31 MW -53 Mvar 7 MW -28 Mvar 23 MW -25 Mvar 22 MW -28 Mvar 4 7 2 M W - 2 M v a r HORSEFLT 1.00 puBOISEBCH 93.4 Mvar 0.0 Mvar 1.01 puONTARIO 62 MW -2 Mvar 35 MW 26 Mvar 368 MW 48 Mvar 3 3 0 M W - 5 4 M v a r 65 MW -8 Mvar 404 MW -65 Mvar 320 MW -13 Mvar 320 MW -13 Mvar 330 MW -18 Mvar 333 MW -41 Mvar 210 MW -57 Mvar 271 MW -70 Mvar 8 M W - 4 8 M v a r 8 M W - 4 8 M v a r 1492 MW -68 Mvar 428 MW 129 Mvar 756 MW -37 Mvar 1335 MW -33 Mvar 974 MW -36 Mvar 906 MW -41 Mvar 722 MW -3 Mvar 485 MW -13 Mvar 477 MW -13 Mvar 670 MW -32 Mvar 686 MW -34 Mvar 434 MW -54 Mvar 4 9 2 M W 1 2 0 M v a r 1615 MW -168 Mvar 1 9 2 3 M W - 3 7 M v a r 1 8 0 9 M W 4 3 M v a r 1 7 8 0 M W - 9 8 M v a r 1784 MW -299 Mvar ID-NW = -2446 MW Grassland = -1418 MW Summer Lake = -429 MW Lolo = -330 MW Walla Walla = -151 MW LaGrande = -139 MW Midpoint West = -1862 MW Borah West = -503 MW Idaho-Sierra = 548 MW N of John Day = 9446 MW COI = 5613 MW PDCI = 3101 MW ID-MT = -351 MW W of McNary = 5545 MW W of Slatt = 6294 MW Alturas Project = 181 MW Path C = -1911 MW Montana Southeast = 630 MW TOT 2B1 = 228 MW TOT 2C = 324 MW 431 MW -77 Mvar 102 MW 51 Mvar 1480 MW -89 Mvar 1424 MW -32 Mvar 17 M W -91 M v a r 1 1 1 3 M W - 8 2 M v a r 1 4 1 8 M W 2 1 8 M v a r 1360 MW -344 Mvar Page 492 of 776 Appendix G– 16hs2sa_2250idnw_N_wom Case Post-Transient Contingency Results Figure G7: 16la1sa_3400idnw_N_wom Case after the contingency N-2: DC-BIPOLE 1.05 puMALIN 0.0 Mvar 216.9 Mvar 216.9 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 219.6 Mvar 1.09 puPONDROSA 0.0 Mvar 2 1 9 8 M W - 2 3 8 M v a r 2 0 0 8 M W - 2 2 7 M v a r 2 5 0 2 M W - 5 5 1 M v a r 2422 MW -144 Mvar 274 MW -16 Mvar 241 MW -10 Mvar 470 MW -33 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 449.9 Mvar 1.07 puMCNARY 1.08 puSLATT 352.5 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.09 puASHE 0.0 Mvar 1.08 pu GRASSLND 174.9 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD456.4 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.03 puLAGRANDE 55.4 Mvar 1.05 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.03 puTALBOT QUARTZTP 1.04 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 159.6 Mvar 119.7 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.06 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-85.9 Mvar 1.06 puBORAH 1.01 puMIDPOINT 0.0 Mvar 176.8 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.01 puADELAIDE 0.97 puIDAHO-NV 1.02 puKINPORT 183.3 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.4 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 7 3 1 M W - 9 M v a r 2 1 5 2 M W 2 7 M v a r 2490 MW 56 Mvar 2497 MW 53 Mvar 402 MW -55 Mvar 980 MW 14 Mvar 1703 MW -146 Mvar 1169 MW -97 Mvar 1225 MW -180 Mvar 279 MW -109 Mvar 1231 MW -160 Mvar 1471 MW 41 Mvar 264 MW 155 Mvar 5 5 9 M W 1 3 M v a r 264 MW 83 Mvar 495 MW -52 Mvar 946 MW 78 Mvar 196 MW -4 Mvar 189 MW -8 Mvar 841 MW 64 Mvar 1.05 puANTICLIN 373 MW 10 Mvar 373 MW 9 Mvar 47 MW -118 Mvar 39 MW -102 Mvar 277 MW -36 Mvar 495 MW -52 Mvar 182 MW 4 Mvar 245 MW 72 Mvar 588 MW -87 Mvar 187 MW -74 Mvar 39 MW -61 Mvar 28 MW -66 Mvar 582 MW 177 Mvar 595 MW 41 Mvar 730 MW -231 Mvar 1269 MW -187 Mvar 219 MW -33 Mvar 145 MW -26 Mvar 174 MW -27 Mvar 143 MW -19 Mvar 40 MW 1 Mvar 2 7 6 M W 1 8 M v a r 91 MW 11 Mvar 160 MW -46 Mvar 6 MW -49 Mvar 17 MW 23 Mvar 1 MW 19 Mvar 3 MW 23 Mvar 4 6 3 M W - 3 M v a r HORSEFLT 1.00 puBOISEBCH 93.6 Mvar 0.0 Mvar 1.01 puONTARIO 40 MW 1 Mvar 34 MW 25 Mvar 344 MW 48 Mvar 3 0 5 M W - 4 1 M v a r 71 MW -9 Mvar 397 MW -58 Mvar 314 MW -10 Mvar 314 MW -10 Mvar 324 MW -16 Mvar 327 MW -38 Mvar 199 MW -48 Mvar 257 MW -58 Mvar 7 M W - 4 8 M v a r 7 M W - 4 8 M v a r 1280 MW -107 Mvar 19 MW 290 Mvar 852 MW -119 Mvar 1307 MW -88 Mvar 892 MW -57 Mvar 829 MW -68 Mvar 649 MW -13 Mvar 405 MW -14 Mvar 398 MW -13 Mvar 555 MW -37 Mvar 568 MW -39 Mvar 201 MW -22 Mvar 5 0 7 M W 1 1 0 M v a r 1202 MW -119 Mvar 2 1 0 4 M W 1 9 9 M v a r 1 9 5 9 M W 2 3 1 M v a r 1 9 3 3 M W 8 3 M v a r 1937 MW -151 Mvar ID-NW = -2491 MW Grassland = -1448 MW Summer Lake = -470 MW Lolo = -305 MW Walla Walla = -143 MW LaGrande = -145 MW Midpoint West = -1887 MW Borah West = -515 MW Idaho-Sierra = 559 MW N of John Day = 7447 MW COI = 6132 MW PDCI = 0 MW ID-MT = -336 MW W of McNary = 5123 MW W of Slatt = 5619 MW Alturas Project = 186 MW Path C = -1894 MW Montana Southeast = 588 MW TOT 2B1 = 191 MW TOT 2C = 346 MW 473 MW -127 Mvar 120 MW 37 Mvar 1176 MW 15 Mvar 1127 MW 12 Mvar 13 M W -92 M v a r 1 0 1 1 M W - 1 0 9 M v a r 1 4 4 8 M W 2 6 4 M v a r 1387 MW -342 Mvar Page 493 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 369.3 681.4 650.0 104.8 780.0 87.4 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 633.8 1191.2 979.0 121.7 1287.7 92.5 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 299.0 767.5 722.9 106.2 1265.2 60.7 BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1649.6 2849.3 2442.0 116.7 3235.5 88.1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1644.9 2849.3 2199.9 129.5 3235.5 88.1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1649.6 2847.6 2666.9 106.8 4000.0 71.2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1630.1 2827.2 2667.0 106.0 4000.0 70.7 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1605.2 2767.3 2699.7 102.5 4000.0 69.2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1587.0 2741.8 2699.7 101.6 4000.0 68.5 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1649.6 2901.6 2442.0 118.8 3235.5 89.7 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1644.9 2901.6 2199.9 131.9 3235.5 89.7 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1649.6 2899.1 2666.9 108.7 4000.0 72.5 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1630.1 2879.7 2667.0 108.0 4000.0 72.0 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr DAIRY (45140) % Δ Volts 1.03 0.97 6.19% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr CASEBEER (45086) % Δ Volts 1.02 0.97 5.15% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr BONANTAP (45060) % Δ Volts 1.03 0.98 5.10% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1246.2 1237.0 100.7 1395.9 89.3 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr ATHENA (45015) % Δ Volts 0.99 0.93 6.45% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PILOT RK (45413) % Δ Volts 0.99 0.93 6.45% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr BUCKAROO (45027) % Δ Volts 1.00 0.94 6.38% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr MISSIONT (47191) % Δ Volts 1.00 0.94 6.38% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PENDLBPA (41247) % Δ Volts 1.00 0.94 6.38% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PENDLT T (41248) % Δ Volts 1.00 0.94 6.38% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr PENDLTON (45235) % Δ Volts 1.00 0.94 6.38% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr JONTMB11 (90164) % Δ Volts 1.01 0.95 6.32% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40903) % Δ Volts 1.01 0.95 6.32% Page 494 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LJ2 1 (47808) % Δ Volts 1.02 0.96 6.25% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40905) % Δ Volts 1.03 0.97 6.19% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40619) % Δ Volts 0.98 0.93 5.38% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr MCKAY (45322) % Δ Volts 1.00 0.95 5.26% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr ROUNDUP2 (41253) % Δ Volts 1.01 0.96 5.21% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LJ2 C1 (47807) % Δ Volts 1.03 0.98 5.10% BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 766.2 986.3 950.0 103.8 1286.0 76.7 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 766.2 991.0 950.0 104.3 1286.0 77.1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 908.6 1022.7 1009.1 101.3 1285.2 79.6 BF 4386 Buckley-Marion & Marion-Santiam 500 kV SCIO (45479) % Δ Volts 1.01 0.95 6.32% BF 4386 Buckley-Marion & Marion-Santiam 500 kV SANTIAM (45475) % Δ Volts 1.03 0.97 6.19% BF 4386 Buckley-Marion & Marion-Santiam 500 kV SANTMSS (45476) % Δ Volts 1.03 0.97 6.19% BF 4386 Buckley-Marion & Marion-Santiam 500 kV DETROIT (40344) % Δ Volts 1.04 0.98 6.12% BF 4386 Buckley-Marion & Marion-Santiam 500 kV DETROIT (40345) % Δ Volts 1.04 0.98 6.12% BF 4386 Buckley-Marion & Marion-Santiam 500 kV EVRGNBIO (44873) % Δ Volts 1.02 0.97 5.15% BF 4386 Buckley-Marion & Marion-Santiam 500 kV EVRGNTAP (44866) % Δ Volts 1.02 0.97 5.15% BF 4386 Buckley-Marion & Marion-Santiam 500 kV LYONS (45316) % Δ Volts 1.02 0.97 5.15% BF 4386 Buckley-Marion & Marion-Santiam 500 kV TMBLCR T (41079) % Δ Volts 1.02 0.97 5.15% BF 4386 Buckley-Marion & Marion-Santiam 500 kV SANT TAP (40937) % Δ Volts 1.03 0.98 5.10% BF 4386 Buckley-Marion & Marion-Santiam 500 kV SANTIAM (40939) % Δ Volts 1.03 0.98 5.10% BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations Page 495 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1287.6 1237.0 104.1 1395.9 92.2 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ATHENA (45015) % Δ Volts 0.99 0.92 7.14% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PILOT RK (45413) % Δ Volts 0.99 0.92 7.14% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr MISSIONT (47191) % Δ Volts 1.00 0.93 7.07% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLTON (45235) % Δ Volts 1.00 0.94 6.95% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr BUCKAROO (45027) % Δ Volts 1.00 0.94 6.84% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLBPA (41247) % Δ Volts 1.00 0.94 6.61% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40903) % Δ Volts 1.01 0.95 6.54% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLT T (41248) % Δ Volts 1.00 0.94 6.50% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ROUNDUP2 (41253) % Δ Volts 1.01 0.95 6.32% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40619) % Δ Volts 0.98 0.92 6.18% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRAND2 (40620) % Δ Volts 1.04 0.98 6.12% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr MCKAY (45322) % Δ Volts 1.00 0.94 5.93% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40621) % Δ Volts 1.03 0.98 5.53% BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr N POWDER (60313) % Δ Volts 1.00 0.95 5.37% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus BELL S2 (40088) -> BELL BPA (40087) CKT 1 at BELL S2 Branch MVA 232.3 252.9 249.0 101.5 312.0 81.0 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations Page 496 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1287.6 1237.0 104.1 1395.9 92.2 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ATHENA (45015) % Δ Volts 0.99 0.92 7.14% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PILOT RK (45413) % Δ Volts 0.99 0.92 7.14% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr MISSIONT (47191) % Δ Volts 1.00 0.93 7.07% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLTON (45235) % Δ Volts 1.00 0.94 6.95% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr BUCKAROO (45027) % Δ Volts 1.00 0.94 6.84% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLBPA (41247) % Δ Volts 1.00 0.94 6.61% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40903) % Δ Volts 1.01 0.95 6.54% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr PENDLT T (41248) % Δ Volts 1.00 0.94 6.50% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40905) % Δ Volts 1.03 0.97 6.40% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr ROUNDUP2 (41253) % Δ Volts 1.01 0.95 6.32% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40619) % Δ Volts 0.98 0.92 6.18% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRAND2 (40620) % Δ Volts 1.04 0.98 6.12% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr MCKAY (45322) % Δ Volts 1.00 0.94 5.93% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40621) % Δ Volts 1.03 0.98 5.53% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr N POWDER (60313) % Δ Volts 1.00 0.95 5.37% BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1377.9 1237.0 111.4 1395.9 98.7 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.1 1031.0 920.0 112.1 1046.8 98.5 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 711.3 823.7 800.0 103.0 1199.9 68.7 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.97 0.89 8.99% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.98 0.90 8.89% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.97 0.91 6.59% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.1 1045.9 920.0 113.7 1046.8 99.9 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1389.9 1237.0 112.4 1395.9 99.6 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.97 0.90 7.78% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.97 0.91 6.59% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.98 0.92 6.52% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1272.4 1237.0 102.9 1395.9 91.2 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.08 1053.5 920.0 114.5 1046.8 100.6 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1402.9 1237.0 113.4 1395.9 100.5 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 908.59 1016.6 1009.1 100.7 1285.2 79.1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 711.27 831.62 800.0 104.0 1199.9 69.3 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1730.4 2433.5 2400.0 101.4 3800.0 64.0 Page 497 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV PTRSNFLT (62030) % Δ Volts 0.97 0.88 10.23% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV PTRSNFUR (62386) % Δ Volts 0.98 0.90 8.89% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV AMPS (65025) % Δ Volts 0.97 0.9 7.78% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV BELMONTP (45377) % Δ Volts 0.97 0.92 5.43% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV NORTHCST (45408) % Δ Volts 0.97 0.92 5.43% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV DILLON S (62084) % Δ Volts 0.98 0.93 5.38% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV LAGRANDE (40619) % Δ Volts 0.98 0.93 5.38% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV BIGGRASS (65155) % Δ Volts 0.99 0.94 5.32% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV BURNS (45029) % Δ Volts 1.05 1.0 5.00% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+Caps LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.08 1046.8 920.0 113.8 1046.8 100.0 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+Caps HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1395.1 1237.0 112.8 1395.9 99.9 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+Caps MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 711.27 832.4 800.0 104.0 1199.9 69.4 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+Caps PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1730.4 2429.0 2400.0 101.2 3800.0 63.9 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant No Violations BF PGE Grassland-Slatt 500kV & Boardman Plant No Violations Bus: Alvey 500 kV + RAS No Violations Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Allston-Keeler 500 kV + RAS No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 908.6 1074.5 1009.1 106.5 1285.2 83.6 N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations Page 498 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 278.3 837.4 785.7 106.6 926.3 90.4 N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 278.3 837.4 785.7 106.6 926.3 90.4 N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1649.6 2499.3 2442.0 102.3 3235.5 77.2 N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1644.9 2499.3 2199.9 113.6 3235.5 77.2 N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1800.5 2411.4 2199.9 109.6 3280.5 73.5 N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1785.3 2391.1 2199.9 108.7 3280.5 72.9 N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1930.7 2553.9 2477.9 103.1 4000.0 63.8 N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 908.6 1025.4 1009.1 101.6 1285.2 79.8 N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 633.8 1147.7 979.0 117.2 1287.7 89.1 N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations Page 499 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Hatwai-Low Gran 500 kV No Violations N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 800.1 1006.0 920.0 109.3 1046.8 96.1 N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1380.3 1237.0 111.6 1395.9 98.9 N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.1 1034.6 920.0 112.5 1046.8 98.8 N-1: Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 711.3 823.1 800.0 102.9 1199.9 68.6 N-1: Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.97 0.89 8.99% N-1: Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts 0.98 0.91 7.69% N-1: Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts 0.97 0.91 6.59% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1722.2 2917.5 2400.0 121.6 3200.0 91.2 N-1: Hemingway-Grassland 500 kV + FACRI HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1256.0 1237.0 101.5 1395.9 90.0 N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1730.4 2937.8 2400.0 122.4 3800.0 77.3 N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1375.1 1237.0 111.2 1395.9 98.5 N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.1 1030.3 920.0 112.0 1046.8 98.4 N-1: Hemingway-Grassland 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 711.3 825.2 800.0 103.1 1199.9 68.8 N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1649.6 2850.1 2442.0 116.7 3235.5 88.1 N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1644.9 2850.1 2199.9 129.6 3235.5 88.1 N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1649.6 2848.1 2666.9 106.8 4000.0 71.2 N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1630.1 2828.2 2667.0 106.0 4000.0 70.7 N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1605.2 2828.6 2699.7 104.8 4000.0 70.7 N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1587.0 2805.8 2699.7 103.9 4000.0 70.1 N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations Page 500 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1243.0 1237.0 100.5 1395.9 89.0 N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV PTRSNFLT (62030) % Δ Volts 0.97 0.92 5.43% N-1: Midpoint-Hemingway 500 kV PTRSNFUR (62386) % Δ Volts 0.98 0.93 5.38% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt No Violations N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1276.9 1237.0 103.2 1395.9 91.5 N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 766.2 974.5 950.0 102.6 1286.0 75.8 N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 766.2 974.5 950.0 102.6 1286.0 75.8 N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1800.5 3239.4 2199.9 147.2 3280.5 98.7 N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUTAB21 Branch Amp 1800.5 3239.4 2667.0 121.5 4000.0 81.0 N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 1778.4 3214.4 2667.0 120.5 4000.0 80.4 N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations Page 501 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABVAC11 Branch Amp 1930.7 2902.7 2667.0 108.8 4000.0 72.6 N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1930.7 2902.7 2477.9 117.1 4000.0 72.6 N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at VACA-DIX Branch Amp 1919.2 2895.8 2667.0 108.6 4000.0 72.4 N-1: Table Mtn-Tesla 500 kV VACTES11 (30044) -> TESLA (30040) CKT 1 at VACTES11 Branch Amp 1362.5 2264.1 2230.0 101.5 4000.0 56.6 N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1469.8 2619.8 2230.0 117.5 3555.9 73.7 N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 800.1 925.6 920.0 100.6 1046.8 88.4 N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV BETHEL5 (43041) -> BETHEL (43039) CKT 1 at BETHEL5 Branch MVA 1013.0 1318.7 1309.0 100.7 1691.0 78.0 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.98 0.93 5.38% N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 908.59 1046.1 1009.1 103.7 1285.2 81.4 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 908.59 1025.2 1009.1 101.6 1285.2 79.8 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV BROONT12 (61981) -> ONTARIO (60265) CKT 1 at BROONT12 Branch Amp 959.6 1590.9 1590.0 100.1 2147.0 74.1 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV BROONT12 (61981) -> ONTARIO (60265) CKT 1 at BROONT12 Branch Amp 959.6 1601.2 1590.0 100.7 2147.0 74.6 N-2: Bridger-Populus #1 & #2 345 kV No Violations N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV No Violations N-2: Broadview-Garrisont #1 & #2 500 kV + RAS AMPS (65025) % Δ Volts 0.97 1.03 5.83% N-2: Broadview-Garrisont #1 & #2 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.98 1.04 5.77% N-2: Broadview-Garrisont #1 & #2 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.97 1.02 4.90% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 800.1 977.4 920.0 106.2 1046.8 93.4 N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1722.2 2664.1 2400.0 111.0 3200.0 83.3 N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1644.9 2236.8 2199.9 101.7 2828.0 79.1 Page 502 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1800.5 2352.9 2199.9 107.0 3280.5 71.7 N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1785.3 2333.0 2199.9 106.0 3280.5 71.1 N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1730.4 2679.0 2400.0 111.6 3800.0 70.5 N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1546.1 2218.0 2134.0 103.9 3499.9 63.4 N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1930.7 2521.8 2477.9 101.8 4000.0 63.0 N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1525.4 2186.9 2134.0 102.5 3499.9 62.5 N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 1504.6 2157.9 2134.0 101.1 3499.9 61.7 N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1722.2 2429.8 2400.0 101.2 3200.0 75.9 N-2: Double Palo Verde E EDMON9 (54089) -> NISKU A9 (54091) CKT 80 at E EDMON9 Branch Amp 379.2 411.6 410.0 100.4 552.3 74.5 N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1730.4 2449.2 2400.0 102.0 3800.0 64.5 N-2: Double Palo Verde WBK 25 (50742) % Δ Volts 1.02 0.96 6.25% N-2: Double Palo Verde WRK 25 (50289) % Δ Volts 1.02 0.96 6.25% N-2: Double Palo Verde HRD 25 (51210) % Δ Volts 1.03 0.97 6.19% N-2: Double Palo Verde MIDPT 148 (81851) % Δ Volts 1.08 1.02 5.88% N-2: Double Palo Verde NKL 60T3 (51087) % Δ Volts 1.08 1.02 5.88% N-2: Double Palo Verde NKL 74P (51069) % Δ Volts 1.08 1.02 5.88% N-2: Double Palo Verde WRK 73H1 (51712) % Δ Volts 1.08 1.02 5.88% N-2: Double Palo Verde WRK 73H2 (51714) % Δ Volts 1.08 1.02 5.88% N-2: Double Palo Verde WBK 1T1 (80261) % Δ Volts 0.93 0.88 5.68% N-2: Double Palo Verde WBK 1T2 (50658) % Δ Volts 0.93 0.88 5.68% N-2: Double Palo Verde WBK 1T3 (80272) % Δ Volts 0.93 0.88 5.68% N-2: Double Palo Verde BDM 244P (50902) % Δ Volts 0.96 0.91 5.49% N-2: Double Palo Verde YORKCANY (12091) % Δ Volts 0.99 0.94 5.32% N-2: Double Palo Verde NXC 12T1 (80062) % Δ Volts 1.01 0.96 5.21% N-2: Double Palo Verde NKL 25 (51092) % Δ Volts 1.02 0.97 5.15% N-2: Double Palo Verde SMW 25T1 (50291) % Δ Volts 1.02 0.97 5.15% N-2: Double Palo Verde DGR 12 (50152) % Δ Volts 1.03 0.98 5.10% N-2: Double Palo Verde SCT 12 (50275) % Δ Volts 1.03 0.98 5.10% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS PTRSNFUR (62386) % Δ Volts 0.98 1.03 4.85% N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV No Violations N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1128.7 1273.7 1237.0 103.0 1395.9 91.2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1730.4 3236.4 2400.0 134.8 3800.0 85.2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1480.7 3206.7 2700.0 118.8 4000.0 80.2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1663.7 3081.6 2400.0 128.4 3800.0 81.1 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON12 Branch Amp 1646.5 3065.0 2400.0 127.7 3800.0 80.7 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1663.7 3161.2 2400.0 131.7 3800.0 83.2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON12 Branch Amp 1646.5 3147.6 2400.0 131.1 3800.0 82.8 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 2054.9 3281.3 2900.0 113.1 4350.0 75.4 Page 503 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 1878.6 3444.2 3000.0 114.8 4050.0 85.0 N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 766.2 974.7 950.0 102.6 1286.0 75.8 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV No Violations N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1786.5 3601.8 2667.4 135.0 4099.2 87.9 N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1754.8 3500.0 2667.4 131.2 4099.2 85.4 N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1754.8 3500.0 2667.4 131.2 4099.2 85.4 N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1945.1 3105.5 2993.0 103.8 4514.9 68.8 N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1945.1 3105.5 2993.0 103.8 4514.9 68.8 N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1914.1 3071.1 2993.0 102.6 4514.9 68.0 N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1914.1 3071.1 2993.0 102.6 4514.9 68.0 N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1892.6 3034.1 2993.0 101.4 4514.9 67.2 N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV PTRSNFLT (62030) % Δ Volts 0.97 0.91 6.59% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV PTRSNFUR (62386) % Δ Volts 0.98 0.93 5.38% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 766.2 981.6 950.0 103.3 1286.0 76.3 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 683.9 899.4 830.9 108.3 953.9 94.3 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS BRDGVLLE (31110) -> FRUTLDJT (31120) CKT 1 at BRDGVLLE Branch Amp 289.4 328.6 328.1 100.2 371.4 88.5 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1786.5 3337.4 2667.4 125.1 4099.2 81.4 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1754.8 3245.6 2667.4 121.7 4099.2 79.2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1754.8 3237.3 2667.4 121.4 4099.2 79.0 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1945.1 3419.7 2993.0 114.3 4514.9 75.7 Page 504 of 776 Appendix G - 16hs2a_2250idnw_wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1945.1 3419.7 2993.0 114.3 4514.9 75.7 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1914.1 3398.0 2993.0 113.5 4514.9 75.3 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at MAXWELL Branch Amp 1914.1 3398.0 2993.0 113.5 4514.9 75.3 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1892.6 3364.8 2993.0 112.4 4514.9 74.5 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 285.7 917.1 825.9 111.1 976.5 93.9 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 232.9 858.7 825.1 104.1 975.0 88.1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 388.8 466.2 462.9 100.7 579.9 80.4 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV E EDMON9 (54089) -> NISKU A9 (54091) CKT 80 at E EDMON9 Branch Amp 379.2 412.8 410.0 100.7 552.3 74.7 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV WBK 25 (50742) % Δ Volts 1.02 0.96 6.25% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HRD 25 (51210) % Δ Volts 1.03 0.97 6.19% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV WBK 1T1 (80261) % Δ Volts 0.93 0.88 5.68% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV WBK 1T2 (50658) % Δ Volts 0.93 0.88 5.68% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV WBK 1T3 (80272) % Δ Volts 0.93 0.88 5.68% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV ADDY (40017) % Δ Volts 1.02 0.96 6.25% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV ARDEN (48015) % Δ Volts 1.01 0.96 5.21% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV COLV AVA (48083) % Δ Volts 1.01 0.96 5.21% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV METCHIP (48223) % Δ Volts 1.01 0.96 5.21% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV ORIN (48301) % Δ Volts 1.01 0.96 5.21% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 505 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.74 -3598 0.82 -1116 0.78 -3532 0.91 -1770 0.97 -2504 0.87 -4549 0.88 -3285 0.75 -605 0.76 -345 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.74 -2688 0.82 -1110 0.73 -3614 0.89 -2169 0.97 -2577 0.86 -4719 0.88 -3380 0.75 -602 0.76 -343 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.74 -2664 0.82 -1129 0.81 -3534 0.93 -1673 0.97 -2611 0.87 -4710 0.88 -3370 0.74 -612 0.76 -345 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.75 -2708 0.82 -1089 0.88 -2614 0.83 -2496 0.97 -2466 0.86 -4735 0.88 -3321 0.75 -597 0.75 -334 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.74 -2590 0.82 -1129 0.81 -3599 0.83 -2640 0.97 -2534 0.82 -4120 0.88 -3250 0.75 -604 0.76 -343 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.74 -2725 0.82 -1129 0.81 -3556 0.83 -2668 0.97 -2721 0.85 -4879 0.88 -3438 0.74 -614 0.76 -347 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.74 -2700 0.82 -1158 0.80 -3760 0.82 -2836 0.97 -2818 0.85 -4868 0.88 -3504 0.76 -572 0.76 -321 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.76 -2767 0.83 -1019 0.83 -2758 0.86 -2165 0.97 -2021 0.88 -4265 0.89 -2954 0.76 -565 0.76 -312 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.74 -2385 0.82 -1108 0.79 -3068 0.84 -2597 0.97 -2543 0.86 -4756 0.88 -3343 0.75 -605 0.76 -339 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.76 -2613 0.83 -1050 0.81 -2586 0.86 -2296 0.97 -2239 0.87 -4470 0.89 -3113 0.76 -580 0.76 -321 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.74 -2433 0.82 -1125 0.80 -3668 0.83 -2732 0.97 -2649 0.83 -4539 0.88 -3272 0.75 -608 0.76 -343 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.74 -2724 0.82 -1135 0.80 -3652 0.83 -2689 0.97 -2669 0.80 -4520 0.88 -3301 0.74 -611 0.76 -345 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.74 -2735 0.82 -1157 0.80 -3759 0.82 -2833 0.97 -2813 0.86 -4824 0.88 -3498 0.76 -563 0.76 -321 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.74 -2765 0.82 -1150 0.80 -3747 0.82 -2833 0.97 -2810 0.84 -5026 0.88 -3502 0.75 -621 0.76 -346 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500 KV 0.74 -2762 0.82 -1142 0.80 -3739 0.82 -2816 0.97 -2780 0.85 -4873 0.88 -3460 0.78 -526 0.75 -324 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.75 -2751 0.83 -1063 0.82 -3106 0.84 -2334 0.97 -1846 0.87 -4345 0.89 -2937 0.75 -588 0.75 -328 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.75 -2496 0.82 -1061 0.82 -3010 0.86 -2258 0.97 -1921 0.88 -4287 0.89 -2978 0.76 -582 0.75 -324 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.74 -2515 0.82 -1145 0.80 -3742 0.82 -2821 0.97 -2790 0.85 -4900 0.88 -3478 0.77 -554 0.75 -331 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.74 -2753 0.82 -1117 0.81 -3369 0.82 -2234 0.97 -2152 0.87 -4483 0.89 -3116 0.75 -609 0.76 -344 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.75 -2670 0.82 -1094 0.83 -2880 0.85 -2430 0.97 -2481 0.86 -4689 0.88 -3293 0.75 -601 0.75 -337 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.75 -2558 0.82 -1104 0.81 -3519 0.84 -2524 0.96 -3198 0.86 -4367 0.89 -3105 0.75 -587 0.75 -327 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.74 -2677 0.82 -1130 0.81 -3520 0.84 -2611 0.96 -2421 0.86 -4663 0.88 -3280 0.74 -613 0.76 -347 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.74 -2707 0.82 -1142 0.80 -3632 0.83 -2666 0.96 -2619 0.86 -4800 0.88 -3389 0.74 -619 0.76 -350 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.76 -2738 0.82 -1013 0.80 -3719 0.91 -2332 0.97 -2695 0.88 -4456 0.70 -2533 0.75 -605 0.76 -340 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.74 -2683 0.82 -1130 0.79 -3963 0.83 -2850 0.97 -2780 0.85 -4587 0.86 -2101 0.75 -606 0.75 -351 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.74 -2850 0.82 -1117 0.80 -3654 0.83 -2659 0.97 -2602 0.85 -4163 0.87 -2907 0.76 -574 0.76 -318 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.74 -2726 0.82 -1126 0.80 -3683 0.83 -2752 0.97 -2684 0.84 -4629 0.88 -3279 0.75 -606 0.76 -342 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.74 -2729 0.82 -1142 0.80 -3736 0.83 -2806 0.97 -2774 0.86 -4769 0.88 -3465 0.75 -608 0.76 -346 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.74 -2753 0.82 -1142 0.80 -3730 0.83 -2810 0.97 -2775 0.85 -4866 0.88 -3469 0.74 -613 0.76 -347 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV + RAS 0.74 -2752 0.82 -1134 0.84 -3263 0.79 -1933 0.97 -2488 0.85 -4689 0.89 -3224 0.74 -612 0.76 -345 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV + RAS 0.74 -2716 0.82 -1134 0.81 -3534 0.82 -2386 0.97 -2558 0.85 -4764 0.88 -3325 0.74 -610 0.76 -344 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.74 -2729 0.82 -1136 0.81 -3565 0.82 -2537 0.97 -2586 0.86 -4719 0.88 -3358 0.74 -615 0.76 -347 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.74 -2728 0.82 -1141 0.80 -3717 0.83 -2783 0.97 -2744 0.85 -4776 0.88 -3449 0.74 -616 0.76 -348 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.74 -2748 0.82 -1141 0.80 -3737 0.83 -2804 0.97 -2769 0.86 -4695 0.88 -3454 0.74 -611 0.76 -346 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.74 -2753 0.82 -1141 0.80 -3734 0.83 -2798 0.97 -2762 0.86 -4681 0.88 -3449 0.74 -611 0.76 -346 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV + RAS 0.74 -2752 0.81 -1125 0.85 -3241 0.81 -2440 0.97 -2527 0.86 -4633 0.89 -3228 0.74 -623 0.75 -370 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.74 -2788 0.82 -1133 0.81 -3545 0.80 -2331 0.97 -2555 0.86 -4682 0.91 -2991 0.74 -616 0.76 -348 BF 4432 OSTRANDER-TROUTDALE & SPLIT OSTRANDER 500 KV 0.74 -2710 0.82 -1136 0.81 -3595 0.83 -2584 0.98 -2409 0.86 -4700 0.88 -3361 0.74 -615 0.76 -347 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.74 -2729 0.82 -1142 0.80 -3677 0.82 -2654 0.97 -2635 0.86 -4825 0.88 -3419 0.74 -618 0.76 -349 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.74 -2745 0.82 -1141 0.80 -3671 0.82 -2670 0.97 -3509 0.85 -4839 0.88 -3412 0.74 -618 0.76 -349 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.74 -2742 0.82 -1136 0.81 -3620 0.83 -2589 0.97 -3458 0.86 -4746 0.88 -3358 0.74 -615 0.76 -347 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.74 -2733 0.82 -1134 0.81 -3611 0.82 -2580 0.97 -2532 0.86 -4737 0.88 -3350 0.74 -614 0.76 -347 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV + RAS 0.74 -2728 0.82 -1115 0.83 -3432 0.86 -2281 0.97 -3247 0.87 -4425 0.89 -3126 0.75 -595 0.75 -334 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.74 -2683 0.82 -1134 0.84 -3246 0.79 -1927 0.97 -2490 0.86 -4627 0.89 -3218 0.74 -614 0.76 -347 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV + RAS 0.73 -2711 0.81 -1201 0.78 -4453 0.81 -3150 0.96 -3224 0.85 -5072 0.87 -3791 0.72 -665 0.75 -403 Page 506 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.74 -3019 0.82 -1112 0.82 -3500 0.85 -2466 0.97 -2341 0.87 -4155 0.89 -3086 0.75 -590 0.75 -333 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV + RAS 0.73 -2683 0.81 -1211 0.77 -4690 0.80 -3227 0.95 -4512 0.86 -4969 0.87 -3886 0.73 -657 0.74 -412 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.74 -3090 0.82 -1138 0.80 -3687 0.83 -2741 0.97 -2705 0.86 -4757 0.88 -3420 0.74 -613 0.76 -346 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.74 -2743 0.81 -1153 0.80 -3892 0.84 -2703 0.97 -2781 0.87 -4621 0.88 -3450 0.74 -617 0.75 -359 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.74 -2823 0.81 -1157 0.79 -3938 0.83 -2816 0.97 -2848 0.86 -4683 0.88 -3497 0.74 -620 0.75 -361 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.74 -2831 0.82 -1136 0.80 -3668 0.83 -2659 0.97 -2666 0.85 -4763 0.88 -3393 0.74 -611 0.76 -345 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.74 -2738 0.82 -1146 0.80 -3750 0.82 -2852 0.97 -2818 0.85 -4939 0.88 -3500 0.74 -620 0.76 -350 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.77 -2758 0.82 -964 0.81 -3705 0.88 -2435 0.98 -2517 0.87 -3956 0.79 -2937 0.76 -571 0.76 -317 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.74 -2632 0.82 -1137 0.80 -3724 0.83 -2798 0.97 -2755 0.85 -4837 0.88 -3430 0.75 -610 0.76 -345 BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.73 -2747 0.81 -1215 0.78 -4279 0.80 -3175 0.97 -3250 0.84 -5284 0.87 -3862 0.76 -594 0.74 -379 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.74 -2965 0.82 -1138 0.80 -3676 0.83 -2693 0.97 -2655 0.87 -4366 0.88 -3369 0.75 -609 0.76 -345 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.74 -2742 0.82 -1115 0.80 -3689 0.83 -2724 0.97 -2655 0.85 -4580 0.88 -3245 0.75 -597 0.75 -335 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.74 -2717 0.82 -1134 0.80 -3638 0.83 -2622 0.97 -2633 0.86 -4727 0.88 -3356 0.75 -609 0.76 -344 BF 4700 HATWAI 500KV & 230 KV + RAS 0.72 -2733 0.82 -1256 0.79 -4198 0.80 -3105 0.97 -3156 0.84 -5070 0.87 -3775 0.76 -588 0.74 -379 BF 4708 HATWAI 500 KV BUS 0.74 -2979 0.82 -1193 0.80 -3730 0.83 -2804 0.97 -2773 0.86 -4592 0.88 -3462 0.78 -511 0.77 -290 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.74 -2782 0.82 -1142 0.80 -3727 0.82 -2806 0.97 -2768 0.85 -4807 0.88 -3462 0.74 -613 0.76 -347 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV + RAS 0.73 -2751 0.81 -1194 0.77 -4465 0.79 -3290 0.96 -3582 0.83 -5257 0.87 -3967 0.73 -654 0.74 -392 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.74 -3009 0.82 -1119 0.80 -3740 0.83 -2815 0.97 -2789 0.85 -4669 0.88 -3447 0.76 -570 0.75 -331 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.74 -2739 0.82 -1146 0.80 -3681 0.83 -2756 0.95 -2846 0.85 -4867 0.88 -3440 0.74 -620 0.76 -350 BF 4888 ASHE-SLATT & CGS 500 KV 0.74 -2749 0.81 -1162 0.79 -4212 0.81 -3005 0.97 -3040 0.84 -4617 0.87 -3617 0.74 -610 0.75 -359 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.75 -2927 0.82 -1093 0.81 -3553 0.84 -2545 0.97 -2446 0.84 -4001 0.88 -3033 0.76 -574 0.76 -319 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.75 -2695 0.82 -1095 0.81 -3649 0.85 -2583 0.97 -2593 0.82 -4207 0.88 -3169 0.76 -576 0.76 -319 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.75 -2711 0.82 -1077 0.83 -3269 0.84 -2185 0.97 -2108 0.86 -4015 0.90 -2772 0.76 -579 0.76 -323 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.76 -2607 0.84 -997 0.80 -2845 0.85 -2433 0.97 -3255 0.86 -4619 0.89 -3203 0.76 -575 0.76 -319 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.76 -1874 0.84 -1023 0.81 -2701 0.86 -2306 0.97 -2224 0.87 -4485 0.89 -3124 0.76 -575 0.76 -318 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.74 -1931 0.82 -1131 0.70 -3516 0.83 -2791 0.97 -2757 0.85 -4937 0.88 -3467 0.74 -614 0.76 -346 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.75 -2707 0.82 -1081 0.83 -3293 0.85 -2326 0.97 -2165 0.87 -4380 0.89 -2989 0.75 -595 0.75 -334 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.74 -2546 0.82 -1110 0.81 -3640 0.84 -2639 0.97 -2486 0.86 -4581 0.89 -2602 0.74 -621 0.75 -352 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.75 -2561 0.82 -1059 0.83 -3186 0.85 -2194 0.97 -2033 0.87 -3851 0.90 -2799 0.76 -567 0.76 -315 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.75 -2559 0.82 -1100 0.82 -3532 0.84 -2501 0.97 -2952 0.86 -4103 0.89 -2977 0.75 -583 0.75 -326 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.74 -2663 0.82 -1114 0.81 -3592 0.84 -2592 0.97 -2199 0.86 -4550 0.88 -2964 0.74 -612 0.76 -346 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.77 -2654 0.83 -979 0.82 -2813 0.85 -2160 0.97 -1942 0.88 -4236 0.89 -2952 0.77 -548 0.76 -300 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.75 -2298 0.82 -1073 0.82 -3143 0.84 -2426 0.97 -2237 0.87 -4537 0.89 -3130 0.75 -587 0.75 -327 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.74 -2553 0.82 -1140 0.80 -3728 0.83 -2786 0.97 -2751 0.85 -4657 0.88 -3443 0.75 -608 0.76 -345 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.74 -2750 0.82 -1139 0.80 -3700 0.83 -2746 0.97 -2700 0.86 -4579 0.88 -3407 0.75 -610 0.76 -346 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.74 -2748 0.82 -1134 0.80 -3679 0.83 -2711 0.97 -2655 0.86 -4400 0.88 -3360 0.75 -600 0.76 -339 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.74 -2738 0.82 -1135 0.80 -3677 0.83 -2711 0.97 -2643 0.84 -4434 0.88 -3358 0.75 -604 0.76 -341 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.74 -2742 0.82 -1141 0.80 -3711 0.83 -2781 0.97 -2728 0.85 -4575 0.88 -3426 0.74 -612 0.76 -346 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.75 -2748 0.82 -1097 0.80 -3660 0.83 -2692 0.97 -2570 0.86 -4578 0.88 -2115 0.75 -603 0.75 -338 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.74 -2718 0.81 -1137 0.79 -3894 0.83 -2825 0.97 -2758 0.85 -4718 0.87 -3111 0.75 -606 0.76 -349 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.77 -2843 0.82 -964 0.81 -3705 0.88 -2435 0.98 -2517 0.87 -3956 0.79 -2937 0.76 -571 0.76 -317 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.74 -2632 0.81 -1142 0.80 -3870 0.83 -2701 0.97 -2657 0.86 -4060 0.87 -2831 0.76 -578 0.75 -332 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.75 -2830 0.82 -1098 0.82 -3476 0.85 -2429 0.97 -2275 0.86 -4198 0.89 -3020 0.75 -584 0.75 -327 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.75 -2662 0.82 -1100 0.82 -3532 0.84 -2514 0.97 -2331 0.85 -4245 0.89 -3082 0.76 -582 0.75 -324 BF 5266 SLATT-BUCKLY 500 KV 0.75 -2676 0.82 -1084 0.83 -3311 0.84 -2356 0.97 -2216 0.87 -4398 0.89 -3057 0.75 -597 0.75 -335 Page 507 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.74 -2584 0.82 -1142 0.80 -3722 0.83 -2796 0.97 -2756 0.84 -4674 0.88 -3447 0.74 -615 0.76 -347 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.74 -2751 0.82 -1138 0.80 -3703 0.83 -2769 0.97 -2720 0.82 -4375 0.88 -3409 0.74 -611 0.76 -345 BF IPC HEMINGWAY-GRASSLAND 500 KV & HEMINGWAY 500/230 XFMR 0.74 -2750 0.88 -664 0.83 -2649 0.87 -2121 0.97 -1917 0.89 -4096 0.90 -2834 0.80 -452 0.78 -238 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.72 -1994 0.87 -878 0.80 -3401 0.83 -2771 0.97 -3594 0.85 -4916 0.88 -3446 0.75 -599 0.75 -336 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.70 -1865 0.89 -615 0.81 -3361 0.83 -2767 0.97 -2756 0.85 -4913 0.88 -3454 0.77 -507 0.77 -284 BF IPC POPULUS-CHILL-HEMINGWAY 500 KV & HEM 500/230 XFMR 0.70 -2435 0.87 -919 0.80 -3646 0.83 -2800 0.97 -2767 0.85 -4934 0.88 -3466 0.75 -608 0.76 -340 BF LOLO 230KV 0.73 -2494 0.83 -1138 0.80 -3572 0.83 -2681 0.97 -2603 0.86 -4685 0.88 -3327 0.75 -596 0.75 -358 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV 0.81 -1826 0.84 -783 0.86 -2258 0.88 -1585 0.98 -2248 0.93 -3412 0.92 -2422 0.80 -433 0.75 -228 BF PGE GRASSLAND-CEDAR SP 500KV & GRASSLAND-HEM 500KV+PTSN 0.81 -1842 0.84 -790 0.86 -2273 0.88 -1595 0.98 -2259 0.93 -3429 0.92 -2431 0.80 -445 0.78 -232 BF PGE GRASSLAND-COYOTE SP 500KV & CARTY GAS PLANT 0.74 -2775 0.81 -1121 0.81 -3699 0.84 -2642 0.97 -3377 0.86 -4521 0.88 -2958 0.75 -601 0.78 -344 BF PGE GRASSLAND-SLATT 500KV & BOARDMAN PLANT 0.74 -2800 0.81 -1159 0.80 -3917 0.82 -2864 0.97 -3696 0.85 -4798 0.88 -3373 0.74 -616 0.76 -329 BUS: ALVEY 500 KV + RAS 0.74 -2752 0.82 -1140 0.88 -2932 0.80 -2828 0.97 -2896 0.85 -5148 0.87 -3639 0.73 -634 0.75 -376 BUS: BELL BPA 500 KV 0.74 -2807 0.82 -1136 0.80 -3733 0.82 -2811 0.97 -2774 0.85 -4869 0.88 -3450 0.78 -523 0.75 -328 BUS: BUCKLEY 500 KV 0.75 -2745 0.83 -1062 0.83 -3077 0.83 -1992 0.97 -1968 0.89 -4121 0.90 -2855 0.75 -589 0.75 -330 BUS: DIXONVILLE 500 KV 0.75 -2512 0.82 -1079 0.86 -2642 0.82 -2540 0.97 -2452 0.85 -4751 0.88 -3322 0.75 -592 0.75 -330 BUS: HOT SPRINGS 500 KV 0.74 -2564 0.82 -1142 0.80 -3731 0.82 -2812 0.97 -2776 0.85 -4897 0.88 -3468 0.75 -587 0.76 -343 BUS: KEELER 500 KV + RAS 0.74 -2749 0.82 -1116 0.84 -3189 0.87 -2012 0.98 -2046 0.89 -4087 0.90 -2947 0.75 -597 0.75 -335 BUS: ROCK CREEK 500 KV 0.75 -2677 0.82 -1100 0.82 -3522 0.84 -2503 0.97 -2280 0.86 -4270 0.89 -3066 0.76 -582 0.75 -325 BUS: SICKLER 500 KV 0.74 -2676 0.82 -1140 0.80 -3732 0.83 -2793 0.97 -2757 0.86 -4657 0.88 -3445 0.75 -610 0.76 -346 BUS: SUMMER LAKE 500 KV 0.76 -2752 0.85 -983 0.81 -2675 0.86 -2280 0.97 -2186 0.87 -4446 0.89 -3092 0.76 -570 0.76 -316 N-1: ALLSTON-KEELER 500 KV + RAS 0.74 -1848 0.82 -1117 0.82 -3461 0.86 -2300 0.97 -2403 0.86 -4475 0.89 -3146 0.75 -597 0.75 -335 N-1: ALLSTON-NAPAVINE 500 KV 0.74 -2691 0.82 -1134 0.80 -3649 0.83 -2635 0.97 -2644 0.86 -4740 0.88 -3377 0.75 -610 0.76 -344 N-1: ALLSTON-PAUL #2 500 KV 0.74 -2734 0.82 -1134 0.80 -3649 0.83 -2639 0.97 -2644 0.85 -4747 0.88 -3376 0.75 -610 0.76 -344 N-1: ALVERY-DIXONVILLE 500 KV 0.75 -2734 0.82 -1078 0.87 -2528 0.83 -2591 0.97 -2418 0.86 -4730 0.88 -3304 0.75 -592 0.75 -330 N-1: ALVEY-MARION 500 KV 0.75 -2559 0.82 -1090 0.86 -2799 0.83 -2470 0.97 -2361 0.86 -4600 0.89 -3159 0.75 -596 0.75 -334 N-1: ASHE-HANFORD 500 KV 0.74 -2592 0.82 -1141 0.80 -3684 0.83 -2727 0.97 -2733 0.81 -4713 0.88 -3354 0.74 -616 0.76 -347 N-1: ASHE-LOW MON 500 KV 0.74 -2745 0.82 -1119 0.80 -3692 0.82 -2736 0.97 -2669 0.85 -4648 0.88 -3283 0.75 -603 0.75 -339 N-1: ASHE-MARION 500 KV 0.75 -2723 0.82 -1097 0.83 -3329 0.84 -2242 0.97 -2205 0.87 -4265 0.89 -2962 0.75 -592 0.75 -333 N-1: ASHE-SLATT 500 KV 0.75 -2634 0.82 -1107 0.81 -3597 0.83 -2600 0.97 -3388 0.85 -4238 0.88 -3198 0.76 -581 0.76 -323 N-1: BELL-COULEE 500 KV 0.74 -2716 0.82 -1136 0.80 -3730 0.82 -2810 0.97 -2772 0.85 -4881 0.88 -3452 0.77 -544 0.75 -331 N-1: BELL-TAFT 500 KV 0.74 -2744 0.82 -1140 0.80 -3732 0.82 -2814 0.97 -2777 0.85 -4924 0.88 -3459 0.78 -538 0.75 -333 N-1: BIG EDDY-CELILO 500 KV 0.74 -2748 0.82 -1143 0.80 -3727 0.82 -2811 0.97 -2775 0.85 -4936 0.88 -3472 0.74 -618 0.76 -348 N-1: BIG EDDY-JOHN DAY 500 KV 0.74 -2751 0.82 -1144 0.80 -3692 0.82 -2786 0.96 -2772 0.85 -4900 0.88 -3448 0.74 -619 0.76 -350 N-1: BIG EDDY-KNIGHT 500 KV 0.74 -2748 0.82 -1130 0.80 -3665 0.83 -2726 0.97 -2554 0.85 -4736 0.88 -3374 0.75 -608 0.76 -342 N-1: BIG EDDY-OSTRANDER 500 KV 0.74 -2730 0.82 -1141 0.80 -3676 0.82 -2707 0.97 -3514 0.85 -4867 0.88 -3431 0.74 -618 0.76 -349 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.74 -2742 0.82 -1064 0.80 -3695 0.83 -2788 0.97 -2742 0.85 -4906 0.88 -3450 0.74 -613 0.76 -345 N-1: BRADY-ANTELOPE 230 KV 0.74 -2632 0.82 -1140 0.80 -3720 0.82 -2805 0.97 -2768 0.85 -4919 0.88 -3465 0.75 -576 0.76 -346 N-1: BROADVIEW-GARRISON #1 500 KV 0.74 -2741 0.82 -1147 0.80 -3748 0.82 -2826 0.97 -2797 0.85 -4913 0.88 -3483 0.80 -482 0.78 -279 N-1: BROWNLEE-ONTARIO 230 KV 0.76 -2755 0.82 -1029 0.80 -3682 0.83 -2776 0.97 -2721 0.85 -4881 0.88 -3430 0.74 -610 0.76 -344 N-1: BUCKLEY-GRIZZLY 500 KV 0.75 -2530 0.82 -1091 0.81 -3374 0.83 -2526 0.97 -2376 0.86 -4631 0.88 -3253 0.75 -597 0.75 -334 N-1: BUCKLEY-MARION 500 KV 0.74 -2612 0.82 -1135 0.80 -3602 0.80 -2362 0.97 -2598 0.86 -4739 0.88 -3330 0.74 -617 0.76 -349 N-1: BUCKLEY-SLATT 500 KV 0.75 -2718 0.82 -1084 0.83 -3311 0.84 -2356 0.97 -2216 0.87 -4398 0.89 -3057 0.75 -597 0.75 -335 N-1: CAPTAIN JACK-OLINDA 500 KV 0.75 -2584 0.83 -1069 0.81 -2575 0.85 -2426 0.97 -2367 0.86 -4602 0.88 -3235 0.75 -585 0.75 -326 N-1: CAPTJACK-KFALLS 500 KV 0.74 -2479 0.82 -1104 0.71 -3580 0.86 -2558 0.97 -2629 0.85 -4915 0.87 -3469 0.75 -603 0.75 -338 N-1: CASCADE CROSSING 500 KV 0.74 -2621 0.82 -1119 0.83 -3349 0.84 -2194 0.97 -2346 0.87 -4446 0.90 -3078 0.74 -613 0.76 -347 Page 508 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: CHIEF JO-COULEE 500 KV 0.74 -2654 0.82 -1142 0.80 -3726 0.82 -2809 0.97 -3646 0.85 -4865 0.88 -3469 0.74 -616 0.76 -348 N-1: CHIEF JO-MONROE 500 KV 0.74 -2751 0.82 -1140 0.80 -3714 0.83 -2784 0.97 -2733 0.85 -4720 0.88 -3437 0.74 -613 0.76 -346 N-1: CHIEF JO-SICKLER 500 KV 0.74 -2747 0.82 -1141 0.80 -3726 0.83 -2802 0.97 -2762 0.86 -4759 0.88 -3457 0.75 -610 0.76 -345 N-1: COULEE-HANFORD 500 KV 0.74 -2750 0.82 -1137 0.80 -3739 0.83 -2773 0.97 -2752 0.84 -4317 0.88 -3422 0.75 -593 0.75 -335 N-1: COULEE-SCHULTZ 500 KV 0.74 -2753 0.82 -1136 0.80 -3705 0.83 -2770 0.97 -2716 0.85 -4568 0.88 -3412 0.75 -602 0.76 -340 N-1: COVINGTON4-RAVER 500 KV 0.74 -2744 0.82 -1144 0.80 -3731 0.83 -2813 0.97 -2783 0.85 -4903 0.88 -3477 0.74 -618 0.76 -349 N-1: COVINGTON5-RAVER 500 KV 0.74 -2752 0.82 -1144 0.80 -3731 0.83 -2812 0.97 -2783 0.85 -4901 0.88 -3477 0.74 -618 0.76 -349 N-1: COYOTE-LONGHORN 500 KV 0.74 -2752 0.82 -1125 0.80 -3689 0.83 -2774 0.97 -2673 0.85 -4824 0.88 -3071 0.75 -608 0.76 -342 N-1: CUSTERW-MONROE 500 KV 0.74 -2756 0.82 -1142 0.80 -3738 0.83 -2810 0.97 -2777 0.86 -4787 0.88 -3467 0.75 -609 0.76 -346 N-1: DIXONVILLE-MERIDIAN 500 KV 0.75 -2753 0.82 -1089 0.85 -2841 0.83 -2563 0.97 -2489 0.85 -4759 0.88 -3334 0.75 -596 0.75 -333 N-1: DRYCREEK-LOLO 230 KV 0.74 -2592 0.82 -1142 0.80 -3727 0.82 -2812 0.97 -2778 0.85 -4937 0.88 -3473 0.74 -617 0.76 -348 N-1: DRYCREEK-N LEWISTON 230 KV 0.74 -2750 0.82 -1143 0.80 -3725 0.82 -2810 0.97 -2775 0.85 -4929 0.88 -3470 0.74 -617 0.76 -348 N-1: DRYCREEK-WALA AVA 230 KV 0.74 -2752 0.82 -1144 0.80 -3725 0.82 -2810 0.97 -2774 0.85 -4924 0.88 -3457 0.74 -616 0.76 -347 N-1: DWORSHAK-HATWAI 500 KV + RAS 0.74 -2752 0.82 -1170 0.80 -3790 0.82 -2859 0.97 -2847 0.86 -4760 0.88 -3526 0.75 -596 0.77 -301 N-1: DWORSHAK-TAFT 500 KV 0.74 -2778 0.82 -1156 0.80 -3754 0.82 -2829 0.97 -2808 0.86 -4817 0.88 -3496 0.79 -505 0.76 -310 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.74 -2761 0.82 -1144 0.80 -3732 0.83 -2794 0.97 -2773 0.85 -4808 0.88 -3467 0.74 -619 0.76 -349 N-1: ECHO LAKE-RAVER 500 KV 0.74 -2754 0.82 -1141 0.80 -3725 0.83 -2806 0.97 -2762 0.85 -4859 0.88 -3459 0.74 -614 0.76 -347 N-1: ECHO LAKE-SCHULTZ 500 KV 0.74 -2750 0.82 -1140 0.80 -3696 0.83 -2781 0.97 -2721 0.85 -4768 0.88 -3432 0.74 -615 0.76 -348 N-1: ECHO LAKE-SNOK TAP 500 KV 0.74 -2746 0.82 -1140 0.80 -3729 0.83 -2791 0.97 -2755 0.86 -4695 0.88 -3449 0.75 -608 0.76 -345 N-1: GARRISON-TAFT #2 500 KV 0.74 -2750 0.82 -1146 0.80 -3739 0.82 -2822 0.97 -2792 0.85 -4947 0.88 -3483 0.76 -588 0.76 -340 N-1: GOLDHILL-PLACER 115 KV 0.74 -2756 0.82 -1145 0.80 -3759 0.82 -2829 0.97 -2800 0.85 -4963 0.88 -3486 0.74 -619 0.76 -348 N-1: GRASSLAND-COYOTE 500 KV 0.74 -2755 0.81 -1113 0.80 -3625 0.83 -2684 0.97 -2578 0.86 -4695 0.88 -3054 0.75 -604 0.75 -339 N-1: GRASSLAND-SLATT 500 KV 0.74 -2737 0.82 -1141 0.80 -3721 0.82 -2800 0.97 -2688 0.85 -4909 0.88 -3395 0.74 -619 0.76 -349 N-1: GRIZZLY-JOHN DAY #2 500 KV 0.75 -2713 0.82 -1076 0.82 -3170 0.84 -2446 0.97 -2282 0.86 -4573 0.89 -3149 0.75 -588 0.75 -328 N-1: GRIZZLY-MALIN 500 KV 0.75 -2570 0.83 -1065 0.81 -2968 0.85 -2366 0.97 -2275 0.87 -4499 0.89 -3130 0.75 -589 0.75 -329 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.76 -2510 0.83 -1029 0.81 -3106 0.85 -2419 0.97 -2318 0.86 -4557 0.89 -3143 0.76 -569 0.76 -314 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.75 -2433 0.83 -1062 0.81 -2943 0.85 -2343 0.97 -2252 0.87 -4479 0.89 -3118 0.75 -588 0.75 -328 N-1: GRIZZLY-ROUND BU 500 KV 0.74 -2498 0.82 -1142 0.80 -3713 0.83 -2798 0.97 -2734 0.85 -4920 0.88 -3461 0.74 -617 0.76 -348 N-1: HANFORD-LOW MON 500 KV 0.74 -2745 0.82 -1131 0.80 -3687 0.83 -2765 0.97 -2701 0.84 -4697 0.88 -3319 0.75 -611 0.76 -345 N-1: HANFORD-VANTAGE 500 KV 0.74 -2735 0.82 -1138 0.80 -3703 0.83 -2769 0.97 -2720 0.82 -4379 0.88 -3410 0.74 -611 0.76 -345 N-1: HANFORD-WAUTOMA 500 KV 0.74 -2750 0.82 -1137 0.80 -3698 0.83 -2776 0.97 -2721 0.84 -4769 0.88 -3422 0.74 -614 0.76 -346 N-1: HATWAI 500/230 KV XFMR + RAS 0.73 -2742 0.82 -1181 0.80 -3658 0.83 -2761 0.97 -2697 0.85 -4799 0.88 -3410 0.75 -609 0.76 -341 N-1: HATWAI-LOLO 230 KV 0.74 -2775 0.82 -1146 0.80 -3711 0.83 -2798 0.97 -2756 0.85 -4898 0.88 -3455 0.74 -614 0.76 -346 N-1: HATWAI-LOW GRAN 500 KV 0.74 -2755 0.82 -1120 0.80 -3747 0.82 -2825 0.97 -2804 0.85 -4723 0.88 -3470 0.76 -570 0.75 -331 N-1: HATWAI-N LEWISTON 230 KV 0.74 -2740 0.82 -1145 0.80 -3725 0.82 -2810 0.97 -2774 0.85 -4926 0.88 -3471 0.74 -616 0.76 -348 N-1: HELLS CANYON-BROWNLEE 230 KV 0.75 -2753 0.81 -1019 0.80 -3540 0.84 -2649 0.97 -2565 0.86 -4653 0.89 -3194 0.75 -589 0.75 -332 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.73 -2651 0.83 -1170 0.80 -3620 0.83 -2739 0.97 -2673 0.85 -4792 0.89 -3284 0.75 -608 0.76 -342 N-1: HEMINGWAY-GRASSLAND 500 KV 0.80 -2761 0.84 -815 0.83 -2683 0.87 -2122 0.97 -1919 0.89 -4102 0.90 -2834 0.80 -463 0.78 -241 N-1: HEMINGWAY-GRASSLAND 500 KV + FACRI 0.76 -1897 0.82 -1008 0.81 -4194 0.82 -3008 0.97 -3934 0.85 -5034 0.88 -3545 0.76 -558 0.76 -308 N-1: HEMINGWAY-GRASSLAND 500 KV + PTSN SHUNT 0.80 -2299 0.83 -871 0.83 -2759 0.87 -2167 0.97 -1982 0.89 -4174 0.90 -2869 0.79 -479 0.77 -248 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.75 -2040 0.84 -1044 0.80 -3390 0.83 -2761 0.97 -3577 0.85 -4904 0.88 -3437 0.75 -596 0.75 -334 N-1: HILL TOP 345/230 XFMR 0.74 -1977 0.82 -1119 0.80 -3637 0.83 -2808 0.97 -2775 0.85 -4930 0.88 -3466 0.74 -610 0.76 -344 N-1: HORSE HV-MCNARY 230 KV 0.74 -2655 0.82 -1130 0.80 -3693 0.83 -2756 0.97 -2696 0.85 -4822 0.89 -3267 0.74 -616 0.76 -347 N-1: HOT SPRINGS-TAFT 500 KV 0.74 -2733 0.82 -1141 0.80 -3728 0.82 -2810 0.97 -2775 0.85 -4895 0.88 -3467 0.75 -587 0.76 -343 N-1: HUMBOLDT-COYOTE CK 345 KV 0.74 -2748 0.82 -1166 0.81 -3371 0.84 -2662 0.97 -2615 0.85 -4804 0.88 -3404 0.74 -625 0.75 -355 Page 509 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.74 -2696 0.81 -1153 0.80 -3703 0.82 -2811 0.97 -2779 0.85 -4951 0.88 -3480 0.74 -625 0.75 -353 N-1: ING500-CUSTERW 500 KV 0.74 -2777 0.82 -1143 0.80 -3731 0.82 -2811 0.97 -2776 0.85 -4877 0.88 -3470 0.74 -614 0.76 -347 N-1: JOHN DAY-MARION 500 KV 0.74 -2752 0.82 -1131 0.81 -3552 0.81 -2368 0.97 -2510 0.86 -4732 0.89 -3288 0.74 -614 0.76 -347 N-1: JOHN DAY-ROCK CK 500 KV 0.75 -2716 0.82 -1103 0.82 -3539 0.84 -2540 0.97 -2332 0.86 -4408 0.89 -3121 0.75 -585 0.75 -326 N-1: JOHN DAY-SLATT 500 KV 0.74 -2680 0.82 -1124 0.81 -3628 0.83 -2646 0.97 -2259 0.86 -4657 0.88 -3215 0.74 -614 0.76 -347 N-1: KFALLS-MERIDIAN 500 KV 0.74 -2677 0.82 -1132 0.77 -3733 0.91 -1841 0.97 -2664 0.86 -4761 0.88 -3399 0.74 -614 0.76 -346 N-1: KNIGHT-WAUTOMA 500 KV 0.75 -2719 0.82 -1101 0.82 -3492 0.84 -2466 0.97 -2304 0.86 -4305 0.89 -3061 0.75 -586 0.75 -328 N-1: LAGRANDE-NORTH POWDER 230 KV 0.74 -2669 0.83 -1094 0.80 -3665 0.83 -2772 0.97 -2719 0.85 -4888 0.88 -3391 0.74 -610 0.76 -344 N-1: LANES-MARION 500 KV 0.74 -2739 0.82 -1133 0.81 -3516 0.83 -2612 0.97 -2630 0.85 -4784 0.88 -3364 0.74 -614 0.76 -346 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.74 -2722 0.82 -1141 0.80 -3727 0.82 -2810 0.97 -2773 0.85 -4911 0.88 -3465 0.74 -615 0.76 -347 N-1: LIT GOOSE-LOW MON 500 KV 0.74 -2750 0.82 -1138 0.80 -3726 0.83 -2801 0.97 -2761 0.85 -4859 0.88 -3439 0.74 -612 0.76 -345 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.74 -2748 0.82 -1139 0.80 -3730 0.82 -2810 0.97 -2775 0.85 -4888 0.88 -3459 0.75 -611 0.76 -345 N-1: LOW MON-SAC TAP 500 KV 0.74 -2749 0.82 -1132 0.80 -3698 0.82 -2732 0.97 -2693 0.85 -4302 0.87 -2994 0.76 -582 0.76 -324 N-1: MALIN 500/230 XFMR 0.74 -2748 0.82 -1131 0.82 -3561 0.83 -2679 0.97 -2728 0.85 -4884 0.88 -3442 0.74 -614 0.76 -347 N-1: MALIN-HILLTOP 230 KV 0.74 -2704 0.82 -1116 0.80 -3649 0.83 -2797 0.97 -2757 0.85 -4915 0.88 -3457 0.75 -609 0.76 -343 N-1: MALIN-ROUND MTN #1 500 KV 0.74 -2643 0.82 -1109 0.80 -3087 0.84 -2604 0.97 -2551 0.85 -4761 0.88 -3347 0.75 -605 0.76 -339 N-1: MALIN-ROUND MTN #2 500 KV 0.74 -2618 0.82 -1107 0.80 -3058 0.84 -2592 0.97 -2538 0.86 -4753 0.88 -3341 0.75 -604 0.75 -339 N-1: MALIN-SUMMER LAKE 500 KV 0.74 -2611 0.82 -1139 0.80 -3082 0.84 -2536 0.97 -2504 0.86 -4702 0.88 -3304 0.74 -618 0.76 -349 N-1: MAPLE VLY-ROCKY RH 345 KV 0.74 -2577 0.82 -1141 0.80 -3723 0.83 -2801 0.97 -2759 0.85 -4825 0.88 -3457 0.74 -616 0.76 -348 N-1: MARION-PEARL 500 KV 0.74 -2750 0.82 -1139 0.83 -3321 0.80 -1978 0.97 -2604 0.85 -4800 0.89 -3282 0.74 -617 0.76 -348 N-1: MARION-SANTIAM 500 KV 0.74 -2725 0.82 -1148 0.80 -3782 0.82 -2911 0.97 -2861 0.84 -5002 0.89 -3360 0.74 -619 0.76 -349 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.74 -2766 0.82 -1143 0.80 -3725 0.83 -2775 0.97 -2782 0.85 -4922 0.88 -3467 0.74 -618 0.76 -349 N-1: MCNARY 500/230 KV XFMR 0.75 -2752 0.82 -1056 0.80 -3789 0.86 -2701 0.97 -2856 0.86 -4861 0.80 -3600 0.74 -618 0.76 -349 N-1: MCNARY S2-MCNARY S3 230 KV 0.74 -2720 0.82 -1143 0.80 -3727 0.82 -2813 0.97 -2777 0.85 -4924 0.89 -3351 0.74 -617 0.76 -348 N-1: MCNARY-BOARD T1 230 KV 0.74 -2751 0.82 -1135 0.80 -3678 0.83 -2785 0.97 -2740 0.85 -4922 0.88 -3452 0.74 -616 0.76 -346 N-1: MCNARY-JOHN DAY 500 KV 0.75 -2730 0.82 -1098 0.81 -3572 0.84 -2561 0.97 -2355 0.86 -4493 0.89 -2735 0.75 -606 0.76 -342 N-1: MCNARY-LONGHORN 500 KV 0.75 -2657 0.82 -1099 0.80 -3701 0.83 -2739 0.97 -2645 0.85 -4662 0.87 -2159 0.75 -602 0.75 -337 N-1: MCNARY-ROSS 345 KV 0.74 -2743 0.82 -1127 0.80 -3659 0.83 -2694 0.97 -2645 0.86 -4757 0.89 -3234 0.74 -617 0.76 -348 N-1: MCNARY-ROUNDUP 230 KV 0.75 -2726 0.85 -991 0.80 -3600 0.83 -2720 0.97 -2655 0.85 -4824 0.88 -3326 0.75 -605 0.76 -340 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.74 -2682 0.82 -1123 0.80 -3660 0.83 -2673 0.97 -2617 0.85 -4246 0.87 -2919 0.76 -580 0.76 -322 N-1: MIDPOINT-HEMINGWAY 500 KV 0.70 -2181 0.84 -1003 0.80 -3430 0.83 -2747 0.97 -2711 0.85 -4901 0.88 -3446 0.77 -541 0.77 -297 N-1: MIDPOINT-HEMINGWAY 500 KV + PTSN SHUNT 0.70 -2189 0.84 -1008 0.80 -3440 0.83 -2753 0.97 -2720 0.85 -4918 0.88 -3454 0.77 -553 0.76 -300 N-1: MIDPOINT-HUMBOLDT 345 KV 0.74 -2220 0.81 -1203 0.81 -3374 0.84 -2673 0.97 -2635 0.85 -4834 0.88 -3423 0.74 -629 0.75 -355 N-1: NAPAVINE-PAUL 500 KV 0.74 -2811 0.82 -1139 0.80 -3693 0.83 -2764 0.97 -2718 0.85 -4865 0.88 -3429 0.74 -614 0.76 -346 N-1: OLYMPIA-PAUL 500 KV 0.74 -2744 0.82 -1145 0.80 -3744 0.82 -2840 0.97 -2807 0.84 -4958 0.88 -3493 0.74 -619 0.76 -349 N-1: ONTARIO-CALDWELL 230 KV 0.74 -2756 0.83 -1100 0.80 -3698 0.83 -2792 0.97 -2747 0.85 -4910 0.88 -3454 0.74 -614 0.76 -346 N-1: OSTRANDER-KNIGHT 500 KV 0.74 -2639 0.82 -1135 0.80 -3635 0.83 -2622 0.97 -2586 0.85 -4763 0.88 -3360 0.74 -614 0.76 -347 N-1: OSTRANDER-PEARL 500 KV 0.74 -2730 0.82 -1142 0.80 -3717 0.81 -2736 0.97 -2725 0.85 -4921 0.88 -3460 0.74 -618 0.76 -349 N-1: OSTRANDER-TROUTDALE 500 KV 0.74 -2748 0.82 -1145 0.80 -3730 0.83 -2767 0.97 -2780 0.85 -4913 0.88 -3473 0.74 -619 0.76 -349 N-1: OXBOW-BROWNLEE #2 230 KV 0.74 -2755 0.82 -1129 0.80 -3722 0.82 -2808 0.97 -2771 0.85 -4931 0.88 -3468 0.74 -617 0.76 -348 N-1: OXBOW-LOLO 230 KV 0.73 -2743 0.83 -1127 0.80 -3572 0.83 -2681 0.97 -2604 0.86 -4692 0.88 -3327 0.75 -596 0.75 -329 N-1: PAUL-SATSOP 500 KV 0.74 -2746 0.82 -1143 0.80 -3725 0.83 -2790 0.97 -2769 0.86 -4870 0.88 -3468 0.74 -618 0.76 -349 N-1: PEARL-KEELER 500 KV 0.74 -2751 0.82 -1138 0.81 -3580 0.83 -2558 0.97 -2606 0.85 -4802 0.88 -3380 0.74 -612 0.76 -345 N-1: PEARL-KEELER 500 KV + RAS 0.74 -2739 0.82 -1138 0.81 -3580 0.83 -2558 0.97 -2606 0.85 -4802 0.88 -3380 0.74 -612 0.76 -345 N-1: PINTO-FOUR CORNER 345 KV 0.74 -2739 0.82 -1146 0.80 -3698 0.82 -2804 0.97 -2768 0.85 -4932 0.88 -3471 0.74 -620 0.76 -350 Page 510 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: PONDEROSA A 500/230 KV XFMR 0.74 -2756 0.82 -1143 0.80 -3722 0.83 -2809 0.97 -2777 0.85 -4937 0.88 -3474 0.74 -618 0.76 -349 N-1: PONDEROSA B 500/230 KV XFMR 0.74 -2751 0.82 -1142 0.80 -3727 0.83 -2812 0.97 -2779 0.85 -4939 0.88 -3474 0.74 -617 0.76 -348 N-1: RAVER-PAUL 500 KV 0.74 -2749 0.82 -1112 0.81 -3512 0.84 -2504 0.97 -2348 0.87 -4195 0.89 -3088 0.75 -590 0.75 -333 N-1: RAVER-TACOMA 500 KV 0.74 -2683 0.82 -1142 0.80 -3723 0.83 -2796 0.97 -3636 0.85 -4842 0.88 -3462 0.74 -617 0.76 -348 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.74 -2750 0.81 -1152 0.80 -3643 0.83 -2783 0.97 -2741 0.85 -4910 0.88 -3459 0.74 -624 0.75 -354 N-1: ROBINSON-HARRY ALLEN 500 KV 0.75 -2779 0.82 -1121 0.80 -3747 0.82 -2818 0.97 -2786 0.85 -4941 0.88 -3472 0.74 -613 0.76 -346 N-1: ROCK CK-WAUTOMA 500 KV 0.75 -2645 0.82 -1103 0.82 -3545 0.84 -2536 0.97 -2357 0.86 -4325 0.89 -3111 0.75 -583 0.75 -325 N-1: ROUND MTN-TABLE MTN 500 KV 0.74 -2682 0.82 -1120 0.80 -3339 0.83 -2703 0.97 -2654 0.85 -4845 0.88 -3409 0.75 -608 0.76 -342 N-1: ROUNDUP-LAGRANDE 230 KV 0.74 -2671 0.83 -1078 0.80 -3624 0.83 -2744 0.97 -2677 0.85 -4847 0.88 -3335 0.75 -607 0.76 -342 N-1: SCHULTZ-SICKLER 500 KV 0.74 -2732 0.82 -1140 0.80 -3734 0.83 -2797 0.97 -2760 0.85 -4697 0.88 -3448 0.75 -611 0.76 -346 N-1: SCHULTZ-VANTAGE 500 KV 0.74 -2752 0.82 -1143 0.80 -3723 0.83 -2801 0.97 -2763 0.84 -4698 0.88 -3453 0.74 -615 0.76 -347 N-1: SCHULTZ-WAUTOMA 500 KV 0.74 -2751 0.82 -1136 0.80 -3686 0.83 -2735 0.97 -2669 0.84 -4515 0.88 -3381 0.75 -606 0.76 -342 N-1: SIGURD-GLEN CANYON 230 KV 0.74 -2745 0.82 -1142 0.80 -3728 0.82 -2814 0.97 -2780 0.85 -4939 0.88 -3474 0.74 -617 0.76 -348 N-1: SLATT 500/230 KV XFMR 0.74 -2747 0.81 -1155 0.80 -3888 0.83 -2844 0.97 -2815 0.85 -4801 0.88 -3434 0.74 -617 0.75 -357 N-1: SLATT-LONGHORN 500 KV 0.74 -2823 0.82 -1127 0.80 -3670 0.82 -2728 0.97 -2650 0.85 -4785 0.88 -3143 0.74 -615 0.76 -347 N-1: SNOK TAP-SNOKING 500 KV 0.74 -2721 0.82 -1143 0.80 -3732 0.83 -2811 0.97 -2778 0.85 -4882 0.88 -3473 0.74 -617 0.76 -348 N-1: TABLE MTN-TESLA 500 KV 0.74 -2752 0.82 -1124 0.80 -3449 0.83 -2763 0.97 -2717 0.85 -4885 0.88 -3439 0.75 -608 0.76 -342 N-1: TABLE MTN-VACA DIXON 500 KV 0.74 -2689 0.82 -1114 0.81 -3228 0.83 -2714 0.97 -2660 0.85 -4846 0.88 -3411 0.75 -604 0.75 -339 N-1: VANTAGE 500/230 KV XFMR #1 0.74 -2648 0.82 -1142 0.80 -3727 0.82 -2809 0.97 -2775 0.84 -4953 0.88 -3470 0.74 -618 0.76 -348 N-1: VANTAGE 500/230 KV XFMR #2 0.74 -2751 0.82 -1142 0.80 -3727 0.82 -2809 0.97 -2774 0.84 -4953 0.88 -3470 0.74 -618 0.76 -348 N-1: WALLA WALLA-TALBOT 230 KV 0.74 -2751 0.82 -1150 0.80 -3723 0.82 -2805 0.97 -2765 0.85 -4882 0.88 -3460 0.74 -610 0.76 -345 N-1: WALLA WALLA-WALLULA 230 KV 0.74 -2751 0.82 -1132 0.80 -3714 0.83 -2801 0.97 -2764 0.85 -4925 0.89 -3330 0.74 -616 0.76 -348 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.76 -2752 0.82 -1042 0.85 -3067 0.87 -1959 0.98 -1733 0.88 -3418 0.90 -2539 0.77 -536 0.77 -295 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.75 -2561 0.82 -1085 0.84 -3082 0.83 -1780 0.98 -1845 0.88 -3987 0.91 -2705 0.75 -590 0.75 -333 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.76 -2584 0.83 -1017 0.87 -2702 0.88 -1694 0.98 -1395 0.91 -3457 0.91 -2390 0.76 -562 0.76 -313 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.75 -2390 0.82 -1080 0.83 -3235 0.85 -2143 0.97 -2059 0.87 -4083 0.90 -2636 0.75 -588 0.75 -331 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.75 -2592 0.83 -1072 0.84 -3163 0.85 -2053 0.97 -2635 0.88 -3926 0.90 -2652 0.75 -587 0.75 -330 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.76 -2533 0.82 -1059 0.83 -3374 0.85 -2320 0.97 -2972 0.87 -3835 0.89 -2491 0.76 -569 0.76 -316 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.75 -2606 0.82 -1083 0.82 -3474 0.85 -2443 0.97 -3192 0.86 -4040 0.89 -2804 0.76 -575 0.76 -319 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.74 -2664 0.81 -1189 0.79 -4029 0.81 -3027 0.97 -3049 0.85 -5066 0.87 -3711 0.86 -300 0.77 -237 N-2: BETHEL-CEDAR SP 500KV & BETHEL-ROUND BUTTE 230 KV 0.74 -2683 0.81 -1128 0.81 -3513 0.84 -2256 0.97 -3385 0.86 -4601 0.89 -3242 0.74 -617 0.76 -349 N-2: BETHEL-CEDAR SP 500KV & BETHEL-SANTIAM 230KV 0.74 -2682 0.81 -1126 0.81 -3521 0.84 -2348 0.97 -3388 0.86 -4636 0.89 -3260 0.74 -616 0.76 -349 N-2: BETHEL-CEDAR SP 500KV & SANTIAM-MIKKALO 500KV 0.74 -2659 0.82 -1120 0.83 -3361 0.84 -2202 0.98 -3151 0.87 -4465 0.90 -3125 0.74 -614 0.76 -347 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.74 -2836 0.82 -1139 0.80 -3647 0.82 -2616 0.97 -2613 0.85 -4818 0.88 -3391 0.74 -617 0.76 -349 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.74 -2737 0.82 -1140 0.80 -3666 0.82 -2668 0.97 -3490 0.85 -4836 0.88 -3413 0.74 -618 0.76 -349 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.77 -2740 0.80 -849 0.80 -3554 0.83 -2685 0.97 -3483 0.85 -4774 0.88 -3361 0.75 -598 0.75 -333 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.77 -2275 0.80 -848 0.80 -3550 0.83 -2682 0.97 -2608 0.85 -4771 0.88 -3358 0.75 -598 0.75 -333 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.75 -2270 0.82 -1105 0.80 -3679 0.83 -2780 0.97 -2729 0.85 -4878 0.88 -3434 0.73 -621 0.74 -374 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.79 -2436 0.83 -1076 0.80 -3633 0.83 -2761 0.97 -2698 0.85 -4844 0.88 -3412 0.73 -594 0.74 -379 N-2: BROADVIEW-GARRISONT #1 & #2 500 KV + RAS 0.73 -2132 0.81 -1172 0.78 -4376 0.80 -3215 0.96 -3463 0.84 -5459 0.87 -3915 0.70 -599 0.82 -413 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.74 -2927 0.82 -1045 0.83 -3205 0.85 -2393 0.97 -2254 0.87 -4240 0.90 -2880 0.76 -550 0.76 -299 N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.75 -2562 0.81 -1010 0.80 -3533 0.84 -2644 0.97 -2558 0.86 -4646 0.89 -3189 0.75 -588 0.75 -331 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.74 -2640 0.82 -1123 0.82 -3350 0.80 -1831 0.97 -2322 0.87 -4448 0.90 -3088 0.74 -613 0.76 -347 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.74 -2674 0.82 -1137 0.80 -3697 0.83 -2761 0.97 -2704 0.87 -4455 0.88 -3405 0.75 -603 0.76 -342 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.74 -2744 0.82 -1138 0.80 -3697 0.83 -2765 0.97 -2710 0.86 -4586 0.88 -3418 0.75 -610 0.76 -345 Page 511 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.74 -2745 0.82 -1140 0.80 -3715 0.83 -2778 0.97 -2732 0.85 -4671 0.88 -3435 0.74 -612 0.76 -346 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.74 -2748 0.82 -1140 0.80 -3720 0.83 -2788 0.97 -2744 0.86 -4650 0.88 -3442 0.75 -608 0.76 -344 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.74 -2748 0.82 -1142 0.80 -3723 0.83 -2801 0.97 -2760 0.86 -4775 0.88 -3458 0.74 -615 0.76 -348 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.74 -2750 0.82 -1127 0.80 -3731 0.84 -2700 0.97 -2708 0.82 -3623 0.88 -3342 0.76 -574 0.75 -324 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.74 -2751 0.82 -1121 0.80 -3665 0.83 -2633 0.97 -2564 0.88 -3797 0.88 -3215 0.76 -559 0.76 -317 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.74 -2719 0.82 -1141 0.80 -3739 0.83 -2802 0.97 -2773 0.86 -4725 0.88 -3462 0.75 -605 0.76 -345 N-2: CUSTERW-MONROE #1 & #2 500 KV + RAS 0.73 -2753 0.81 -1204 0.77 -4472 0.79 -3277 0.96 -3523 0.84 -5495 0.87 -3911 0.73 -656 0.75 -396 N-2: DC-BIPOLE 0.77 -3010 0.84 -986 0.82 -2749 0.84 -2669 0.93 -3067 0.86 -4915 0.88 -3522 0.75 -584 0.75 -351 N-2: DOUBLE PALO VERDE 0.79 -2387 0.84 -666 0.86 -3126 0.87 -2345 0.97 -2283 0.90 -3503 0.89 -2947 0.78 -490 0.76 -300 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.74 -2357 0.82 -1144 0.80 -3732 0.83 -2794 0.97 -3646 0.85 -4806 0.88 -3466 0.74 -619 0.76 -349 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.74 -2754 0.82 -1142 0.80 -3722 0.83 -2772 0.97 -2740 0.86 -4667 0.88 -3439 0.74 -617 0.76 -348 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.73 -2752 0.81 -1165 0.79 -4012 0.81 -3005 0.97 -3015 0.84 -5126 0.87 -3688 0.83 -466 0.74 -451 N-2: GRASSLAND-CEDAR SP 500KV & SLATT-BUCKLEY 500KV 0.75 -2438 0.83 -1047 0.86 -2881 0.88 -1755 0.98 -2428 0.91 -3760 0.91 -2648 0.76 -589 0.75 -332 N-2: GRASSLAND-COYOTE 500KV & SLATT-LONGHORN 500KV 0.77 -2619 0.82 -1000 0.84 -3255 0.88 -2187 0.98 -2642 0.89 -3584 0.91 -1451 0.76 -564 0.76 -314 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV + RAS 0.75 -2860 0.82 -1077 0.80 -3097 0.84 -2628 0.97 -2732 0.86 -5027 0.88 -3562 0.73 -632 0.74 -390 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV + RAS 0.76 -2646 0.82 -1040 0.79 -3404 0.82 -2746 0.97 -2811 0.86 -5102 0.88 -3608 0.74 -616 0.75 -375 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV + RAS 0.74 -2581 0.82 -1171 0.78 -3141 0.83 -2791 0.97 -2954 0.83 -5527 0.88 -3710 0.73 -659 0.74 -413 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.74 -2757 0.82 -1124 0.81 -3572 0.83 -2584 0.97 -2593 0.80 -3960 0.89 -2923 0.74 -611 0.76 -346 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.75 -2700 0.82 -1101 0.81 -3574 0.84 -2547 0.97 -2453 0.82 -3991 0.89 -3085 0.75 -593 0.75 -331 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.74 -2674 0.82 -1157 0.80 -3515 0.86 -2495 0.89 -2651 0.89 -4408 0.89 -3296 0.74 -630 0.75 -360 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.74 -2741 0.82 -1132 0.81 -3512 0.81 -2344 0.96 -3370 0.86 -4670 0.89 -3259 0.74 -615 0.76 -348 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV + RAS 0.76 -2711 0.82 -1038 0.82 -3233 0.82 -2495 0.97 -2404 0.87 -4800 0.89 -3308 0.74 -608 0.75 -365 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV + RAS 0.75 -2601 0.82 -1061 0.81 -3337 0.83 -2525 0.97 -2340 0.86 -4776 0.88 -3317 0.74 -603 0.74 -390 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.74 -2612 0.82 -1123 0.82 -3350 0.80 -1831 0.97 -2322 0.87 -4448 0.90 -3088 0.74 -613 0.76 -347 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.74 -2674 0.82 -1120 0.86 -2942 0.79 -1416 0.97 -2330 0.86 -4500 0.90 -3019 0.75 -609 0.76 -344 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.75 -2659 0.82 -1085 0.83 -3443 0.85 -2410 0.97 -2195 0.87 -4220 0.90 -2879 0.75 -584 0.75 -325 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.74 -2647 0.82 -1137 0.81 -3570 0.83 -2538 0.97 -2602 0.85 -4786 0.88 -3375 0.74 -612 0.76 -345 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.74 -2736 0.82 -1131 0.82 -3513 0.85 -2361 0.98 -2256 0.87 -4600 0.89 -3234 0.74 -615 0.76 -348 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.74 -2711 0.82 -1117 0.81 -3521 0.84 -2489 0.97 -2427 0.87 -4558 0.90 -3063 0.74 -613 0.76 -346 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.74 -2695 0.82 -1127 0.81 -3570 0.84 -2568 0.97 -3362 0.86 -4631 0.89 -3238 0.75 -610 0.76 -344 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.73 -2713 0.81 -1194 0.77 -4465 0.79 -3290 0.96 -4460 0.83 -5257 0.87 -3967 0.73 -654 0.74 -392 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.74 -3009 0.82 -1145 0.79 -2501 0.83 -2941 0.96 -3293 0.85 -5469 0.87 -3905 0.73 -651 0.74 -389 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.76 -2679 0.82 -1040 0.84 -3256 0.86 -2178 0.98 -2637 0.88 -3816 0.90 -2364 0.76 -567 0.76 -313 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.75 -2534 0.82 -1078 0.82 -3493 0.84 -2467 0.97 -2255 0.87 -4287 0.90 -2509 0.75 -604 0.76 -340 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.75 -2617 0.82 -1076 0.82 -3445 0.85 -2409 0.97 -2208 0.87 -4253 0.90 -2497 0.75 -605 0.76 -341 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.74 -2609 0.82 -1110 0.81 -3596 0.83 -2622 0.97 -2542 0.86 -4620 0.90 -2997 0.74 -614 0.76 -347 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.70 -2177 0.84 -999 0.81 -3410 0.83 -2741 0.97 -2703 0.85 -4891 0.88 -3442 0.77 -532 0.77 -294 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.74 -2203 0.82 -1138 0.80 -3710 0.83 -2767 0.97 -2725 0.87 -4512 0.88 -3421 0.75 -604 0.76 -344 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV + RAS 0.74 -2748 0.81 -1133 0.88 -3455 0.90 -1688 0.99 -1787 0.91 -3476 0.91 -2644 0.74 -602 0.75 -374 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV + RAS 0.74 -2897 0.81 -1133 0.88 -3504 0.90 -1732 0.99 -1828 0.91 -3513 0.91 -2686 0.74 -602 0.75 -374 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.74 -2899 0.82 -1112 0.81 -3507 0.85 -2476 0.97 -2339 0.87 -4127 0.89 -3081 0.75 -590 0.75 -332 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV + RAS 0.74 -2681 0.82 -1139 0.81 -3577 0.83 -2550 0.97 -3479 0.85 -4799 0.88 -3382 0.74 -613 0.76 -345 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.74 -2740 0.82 -1141 0.80 -3693 0.81 -2683 0.97 -2703 0.85 -4902 0.88 -3446 0.74 -618 0.76 -349 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.74 -2745 0.82 -1142 0.80 -3694 0.83 -2632 0.97 -2732 0.85 -4892 0.88 -3444 0.74 -618 0.76 -349 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.74 -2745 0.82 -1145 0.80 -3739 0.83 -2803 0.97 -2789 0.85 -4838 0.88 -3479 0.74 -620 0.76 -349 Page 512 of 776 Appendix G - 16hs2a_2250idnw_N_wom Case VQ Results V is the voltage at Qm. Qm is the Reactive Margin Yellow highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Hemingway Brownlee Malin Marion John Day Hanford McNary Mill Creek Yellowtail V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.74 -2755 0.82 -1139 0.80 -3700 0.83 -2776 0.97 -2720 0.85 -4726 0.88 -3428 0.74 -611 0.76 -346 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.74 -2745 0.82 -1111 0.81 -3499 0.85 -2468 0.97 -2330 0.87 -4182 0.89 -3076 0.75 -589 0.75 -332 N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.73 -2679 0.81 -1205 0.78 -4651 0.80 -3191 0.97 -4156 0.87 -4821 0.87 -3812 0.73 -653 0.74 -408 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.73 -3080 0.81 -1205 0.78 -4634 0.80 -3170 0.97 -3257 0.87 -4884 0.87 -3795 0.73 -653 0.74 -408 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.74 -3076 0.82 -1132 0.80 -3641 0.83 -2682 0.97 -2583 0.86 -4406 0.88 -3308 0.75 -610 0.76 -345 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.74 -2730 0.82 -1143 0.80 -3726 0.83 -2784 0.97 -2761 0.86 -4766 0.88 -3458 0.74 -618 0.76 -349 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.74 -2752 0.82 -1142 0.80 -3723 0.83 -2791 0.97 -2758 0.85 -4820 0.88 -3459 0.74 -617 0.76 -348 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV + RAS 0.74 -2750 0.81 -1187 0.77 -2896 0.81 -3247 0.96 -3654 0.84 -5787 0.86 -4137 0.72 -663 0.74 -394 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV + RAS 0.74 -2784 0.82 -1137 0.80 -3685 0.84 -2698 0.97 -3523 0.84 -3996 0.88 -3332 0.75 -595 0.75 -336 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV + RAS 0.74 -2747 0.82 -1140 0.80 -3725 0.83 -2785 0.97 -2738 0.85 -4494 0.88 -3419 0.75 -609 0.76 -345 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.74 -2751 0.82 -1132 0.78 -3924 0.80 -3139 0.96 -3388 0.88 -4824 0.87 -3861 0.73 -636 0.74 -410 N-2: TAFT-BELL 500 KV & BELL-LANCASTER 230 KV 0.74 -2964 0.82 -1134 0.80 -3747 0.82 -2817 0.97 -2778 0.85 -4857 0.88 -3438 0.80 -475 0.76 -312 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.74 -2742 0.82 -1141 0.80 -3742 0.82 -2818 0.97 -2785 0.85 -4885 0.88 -3464 0.78 -537 0.75 -334 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV 0.74 -2752 0.82 -1134 0.80 -3747 0.82 -2817 0.97 -2778 0.85 -4857 0.88 -3438 0.80 -475 0.76 -312 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.74 -2742 0.82 -1140 0.80 -3733 0.82 -2814 0.97 -2778 0.85 -4923 0.88 -3459 0.78 -538 0.75 -333 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV 0.74 -2748 0.82 -1139 0.80 -3736 0.82 -2815 0.97 -2778 0.85 -4917 0.88 -3454 0.78 -521 0.75 -327 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.74 -2746 0.82 -1158 0.80 -3763 0.82 -2837 0.97 -2818 0.85 -4828 0.88 -3503 0.79 -500 0.76 -303 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.75 -2764 0.82 -1092 0.82 -3500 0.84 -2465 0.97 -2285 0.86 -4206 0.89 -3033 0.76 -577 0.76 -320 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.75 -2663 0.82 -1092 0.82 -3500 0.84 -2465 0.97 -2285 0.86 -4205 0.89 -3033 0.76 -577 0.76 -320 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.74 -2663 0.82 -1129 0.80 -3602 0.83 -2632 0.97 -2515 0.86 -4225 0.88 -3236 0.75 -607 0.76 -343 Page 513 of 776 Appendix G – 16lhs2a_2250idnw_wom Base Case Transient Stability Plots Figure G8: N-1 Loss of Hemingway-Boardman 500 kV Line (Angle & Voltage Plots) Page 514 of 776 Appendix G – 16lhs2a_2250idnw_wom Base Case Transient Stability Plots Figure G9: Bi-Pole Block – Pacific DC Intertie (Angle & Voltage Plots) Page 515 of 776 Appendix G – 16lhs2a_2250idnw_wom Base Case Transient Stability Plots Figure G10: Loss of Two Palo Verde Units (Angle & Voltage Plots) Page 516 of 776 Appendix G – 16lhs2a_2250idnw_wom Base Case Transient Stability Plots Figure G11: N-2 Loss of Malin-Round Mtn #1 & #2 500 kV Lines (Angle & Voltage Plots) Page 517 of 776 Appendix G – 16lhs2a_2250idnw_wom Base Case Transient Stability Plots Figure G12: N-2 Loss of John Day-Grizzly #2 & Buckley-Grizzly 500 kV Lines (Angle & Voltage Plots) Page 518 of 776 Appendix G – 16lhs2a_2250idnw_wom Base Case Transient Stability Plots Figure G13: N-2 Loss of Slatt-Ashe & Slatt-Longhorn 500 kV Lines (Angle & Voltage Plots) Page 519 of 776 Appendix F - 16hs2a_2250idnw_wom Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 FACRI insert of Ft Rock Series Caps Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Bridger1 22 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV Var 12.2% 0.850 12.2% 59.878 Damped Hemingway 500 kV Bi-pole Block FACRI insertion of Ft Rock Series Caps, Malin Shunt CapC1 Malin R1 500 Wbk 1t3 138 Alturas 115 Lnglkcg2 13.8 Stable & PDCI Bipole Var 7.2% 0.888 7.2% 59.764 Damped Tracy&Olinda React Switching NW 2550 MW Gen Drop N-2 FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1&C2, CaptJack Shunt Cap C1 Ptrsnfrg 69 Ptrsnflt 230 Ptrsnfrg 69 Muskeg4 13.8 Stable & Loss of 2 Palo Verde units Var 10.6% 0.864 10.6% 59.754 Damped N-2 Malin-Round Mt #1 500 kV Chief Jo Braking Resistor Mtshasta Yuba 69 Mtshasta Kmo 13g6 13.8 Stable & 4 Cy 3PH Malin-Round Mt #2 500 kV Var Tracy&Olinda React Switching 16.6% 0.796 16.6% 59.761 Damped Malin 500 kV Round Mt-Table Mt #2 500 kV NW 2400 MW Gen Drop FACRI insert Ft Rock Series Caps Flash Malin-Round Mt S-Caps N-2 John Day-Grizzly #2 500 kV FACRI insert Ft Rock Series Caps, Malin C1, CaptJack C1 Northcst 69 Northcst 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Buckley-Grizzly 500 kV Var 20.6% 0.772 20.6% 59.645 Damped Grizzly 500 kV NW 2400 MW Gen Drop N-2 Slatt-Ashe 500 kV FACRI insertion of Ft Rock Series Caps, Malin Shunt Cap C1 & CaptJack Sh Cap C1 Northcst 69 Northcst 69 Northcst 69 Kmo 13g6 13.8 Stable & 4 Cy 3PH Slatt-Longhorn 500 kV Var 19.4% 0.783 19.4% 59.766 Damped Slatt 500 kV Page 520 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) Page 521 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV CLOSE MultiSectionLine PEARL_500.0 (40827) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 Page 522 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_500.0 (40521) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_230.0 (40519) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line NPULLMAN_115.0 (48291) TO SHAWNEE_115.0 (48383) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCITYT_115.0 (48245) TO SPULLMAN_115.0 (48413) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS HOT SPR_500.0 (40553) TO -148.3 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4700 Hatwai 500kV & 230 kV + RAS CLOSE Line LEON_115.0 (48183) TO MOSCCITY_115.0 (48243) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCCITY_115.0 (48243) TO MOSCITYT_115.0 (48245) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS N LEWIST_115.0 (48253) TO 44.4 MVR BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 Page 523 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) Page 524 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 2 SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) Page 525 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN CLOSE Shunt QUARTZ_138.0 (60305) #c1 BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS N POWDER_34.5 (60313) TO 18 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS HEMINWAY_500 (60155) TO 400 MVR BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN SET SWITCHED SHUNT AT BUS DILLON S_69.0 (62345) TO 27.9 MVR BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Slatt 500kV & Boardman Plant OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Page 526 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvery-Dixonville 500 kV SET SWITCHED SHUNT AT BUS DELNORTE_115.0 (45085) TO 7.5 MVR N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 Page 527 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 Page 528 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt MIDPOINT_345.0 (60235) #2 N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 26.1 MVR N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS N POWDER_ 34.5 (60313) TO 27 MVR N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 Page 529 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 Page 530 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV CLOSE Shunt BETHEL5_500.0 (43041) #1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap MIKKALO_500.0 (43970) TO MKLOSNT2_500.0 (43971) CKT 2 N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV OPEN Series Cap SANTIAM_500.0 (40941) TO SANTMKO2_500.0 (43492) CKT 2 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt PTRSNFLT_230.0 (62030) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt OREBASIN_230.0 (66145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt FRANNIE2_ 34.5 (67145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARLAND1_ 34.5 (67147) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 Page 531 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei Page 532 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening Page 533 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN InjectionGroup RAS Lower Granite Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN InjectionGroup Libby Gen N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 Page 534 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening Page 535 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) Page 536 of 776 Appendix G - 16hs2a_2250idnw_N_wom Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 537 of 776 Appendix H 16la1sa_3400idnw_Path76 Base Case (Alturas Project, Path 76) Page 538 of 776 Appendix H – 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Figure H1: 16la1sa_3400idnw_Path76 Base Case Pre-Contingency 1.08 puMALIN-290.4 Mvar 0.0 Mvar 0.0 Mvar -174.4 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.1 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.9 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 462.0 Mvar 1.08 puPONDROSA -286.9 Mvar 2 9 1 M W - 2 0 6 M v a r 2 5 5 M W - 2 4 9 M v a r 2 4 1 M W - 1 6 2 M v a r 393 MW -37 Mvar 109 MW -86 Mvar 99 MW -90 Mvar 1372 MW 139 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.7 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 189.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.06 puIDAHO-NV 1.03 puKINPORT 184.1 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.4 Mvar 1 6 6 M W 4 6 M v a r 7 1 0 M W - 1 5 1 M v a r 92 MW -6 Mvar 93 MW -7 Mvar 541 MW 4 Mvar 755 MW -81 Mvar 25 MW 87 Mvar 474 MW -46 Mvar 583 MW -101 Mvar 1099 MW -271 Mvar 109 MW -144 Mvar 1179 MW -78 Mvar 1500 MW 164 Mvar 1 4 3 M W - 2 8 M v a r 1502 MW 83 Mvar 778 MW -86 Mvar 424 MW 3 Mvar 404 MW -95 Mvar 420 MW -101 Mvar 102 MW -47 Mvar 1.05 puANTICLIN 630 MW 34 Mvar 629 MW 34 Mvar 692 MW -69 Mvar 684 MW -107 Mvar 431 MW -0 Mvar 778 MW -86 Mvar 222 MW -79 Mvar 419 MW -15 Mvar 633 MW -77 Mvar 336 MW 8 Mvar 438 MW -96 Mvar 476 MW -104 Mvar 1425 MW 148 Mvar 1159 MW -149 Mvar 329 MW -371 Mvar 622 MW -43 Mvar 155 MW -40 Mvar 197 MW -22 Mvar 169 MW -18 Mvar 31 MW 4 Mvar 74 MW -15 Mvar 1 2 2 M W - 4 9 M v a r 67 MW -39 Mvar 287 MW -58 Mvar 164 MW -67 Mvar 153 MW -45 Mvar 162 MW -42 Mvar 163 MW -45 Mvar 5 1 M W 9 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.2 Mvar 1.03 puONTARIO 74 MW -15 Mvar 38 MW -17 Mvar 117 MW -22 Mvar 2 2 8 M W - 1 9 M v a r 203 MW -16 Mvar 124 MW 1 Mvar 14 MW 12 Mvar 14 MW 12 Mvar 15 MW 12 Mvar 12 MW 23 Mvar 54 MW 5 Mvar 69 MW 7 Mvar 1 3 3 M W 6 5 M v a r 1 3 3 M W 6 1 M v a r 625 MW -157 Mvar 1238 MW -323 Mvar 611 MW -80 Mvar 420 MW -76 Mvar 301 MW 40 Mvar 279 MW -9 Mvar 249 MW 42 Mvar 234 MW -19 Mvar 230 MW -18 Mvar 352 MW 2 Mvar 360 MW 1 Mvar 594 MW -50 Mvar 3 6 M W 2 4 M v a r 890 MW -76 Mvar 2 7 1 M W - 3 0 M v a r 2 5 4 M W - 1 0 M v a r 9 3 2 M W - 1 9 5 M v a r 933 MW -269 Mvar ID-NW = 3400 MW Grassland = 1259 MW Summer Lake = 1372 MW Lolo = 228 MW Walla Walla = 305 MW LaGrande = 197 MW Midpoint West = 3268 MW Borah West = 3419 MW Idaho-Sierra = 143 MW N of John Day = -105 MW COI = 1562 MW PDCI = 1100 MW ID-MT = 256 MWW of McNary = 1979 MW W of Slatt = 2982 MW Alturas Project = -290 MW Path C = 716 MW Montana Southeast = -600 MW TOT 2B1 = 560 MW TOT 2C = 550 MW 1348 MW -166 Mvar 23 MW -51 Mvar 200 MW -79 Mvar 85 MW -3 Mvar 267 M W 126 M v a r 3 4 1 M W - 2 7 3 M v a r 1 2 5 9 M W - 2 9 9 M v a r 1308 MW 53 Mvar Page 539 of 776 Appendix H – 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Figure H2: 16la1sa_3400idnw_Path76 Base Case after the contingency N-1: Robinson-Harry Allen 500 kV 1.08 puMALIN-288.2 Mvar 0.0 Mvar 0.0 Mvar -173.1 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -289.1 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -861.9 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.6 Mvar 1.07 puPONDROSA -284.9 Mvar 3 1 9 M W - 2 0 1 M v a r 2 8 3 M W - 2 4 4 M v a r 2 3 0 M W - 1 8 2 M v a r 382 MW -59 Mvar 114 MW -100 Mvar 104 MW -102 Mvar 1414 MW 156 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -288.5 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.0 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.0 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.3 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.1 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.06 puIDAHO-NV 1.03 puKINPORT 183.9 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -288.5 Mvar 1.09 puMARION -467.9 Mvar 1 8 5 M W 5 2 M v a r 7 2 9 M W - 1 4 6 M v a r 115 MW 5 Mvar 116 MW 4 Mvar 541 MW 0 Mvar 760 MW -82 Mvar 17 MW 102 Mvar 482 MW -52 Mvar 591 MW -97 Mvar 1123 MW -282 Mvar 110 MW -133 Mvar 1244 MW -73 Mvar 1508 MW 190 Mvar 5 M W 1 9 M v a r 1510 MW 111 Mvar 771 MW -75 Mvar 498 MW 20 Mvar 387 MW -86 Mvar 402 MW -92 Mvar 120 MW -33 Mvar 1.05 puANTICLIN 625 MW 34 Mvar 624 MW 35 Mvar 676 MW -63 Mvar 669 MW -100 Mvar 424 MW -4 Mvar 771 MW -75 Mvar 217 MW -78 Mvar 416 MW -13 Mvar 630 MW -74 Mvar 327 MW 12 Mvar 421 MW -90 Mvar 458 MW -97 Mvar 1415 MW 155 Mvar 1144 MW -138 Mvar 337 MW -368 Mvar 632 MW -43 Mvar 160 MW -43 Mvar 203 MW -24 Mvar 175 MW -18 Mvar 31 MW 4 Mvar 74 MW -16 Mvar 1 2 8 M W - 5 3 M v a r 72 MW -41 Mvar 295 MW -61 Mvar 166 MW -68 Mvar 155 MW -47 Mvar 164 MW -44 Mvar 165 MW -47 Mvar 5 9 M W 7 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -78.8 Mvar 1.03 puONTARIO 74 MW -16 Mvar 39 MW -17 Mvar 122 MW -24 Mvar 2 3 6 M W - 1 9 M v a r 209 MW -14 Mvar 122 MW 3 Mvar 9 MW 14 Mvar 9 MW 14 Mvar 10 MW 15 Mvar 7 MW 26 Mvar 57 MW 4 Mvar 74 MW 6 Mvar 1 3 6 M W 6 5 M v a r 1 3 6 M W 6 2 M v a r 635 MW -154 Mvar 1235 MW -324 Mvar 614 MW -81 Mvar 425 MW -77 Mvar 305 MW 40 Mvar 283 MW -9 Mvar 252 MW 41 Mvar 238 MW -20 Mvar 233 MW -19 Mvar 358 MW 0 Mvar 366 MW -0 Mvar 605 MW -54 Mvar 4 3 M W 2 1 M v a r 906 MW -84 Mvar 3 0 3 M W - 2 9 M v a r 2 8 2 M W - 7 M v a r 9 8 1 M W - 2 0 3 M v a r 982 MW -283 Mvar ID-NW = 3501 MW Grassland = 1295 MW Summer Lake = 1414 MW Lolo = 236 MW Walla Walla = 313 MW LaGrande = 203 MW Midpoint West = 3378 MW Borah West = 3378 MW Idaho-Sierra = -5 MW N of John Day = -71 MW COI = 1738 MW PDCI = 1100 MW ID-MT = 262 MW W of McNary = 1992 MW W of Slatt = 3032 MW Alturas Project = -345 MW Path C = 703 MW Montana Southeast = -604 MW TOT 2B1 = 602 MW TOT 2C = 624 MW 1388 MW -188 Mvar 33 MW -40 Mvar 197 MW -81 Mvar 83 MW -5 Mvar 271 M W 127 M v a r 3 4 6 M W - 2 7 0 M v a r 1 2 9 5 M W - 3 5 4 M v a r 1347 MW 76 Mvar Page 540 of 776 Appendix H – 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Figure H3: 16la1sa_3400idnw_Path76 Base Case after the contingency Bus: Summer Lake 500 kV 1.09 puMALIN-292.8 Mvar 0.0 Mvar 0.0 Mvar -175.8 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -293.1 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -864.6 Mvar 0.00 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 463.0 Mvar 0.00 puPONDROSA 0.0 Mvar 5 6 9 M W - 2 4 8 M v a r 4 6 9 M W - 3 0 2 M v a r 0 M W 0 M v a r 0 MW 0 Mvar 121 MW 16 Mvar 103 MW 33 Mvar 0 MW 0 Mvar 1.04 puHEMINWAY 1.08 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE -285.8 Mvar 1.06 pu GRASSLND 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON -284.7 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.07 puCDR SPRG 1.08 puBUCKLEY 0.99 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 1.01 puHURICANE 1.00 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 126.3 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY -151.4 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.10 puMIDPOINT 0.0 Mvar 1.10 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 190.6 Mvar 1.10 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.04 puADELAIDE 1.05 puIDAHO-NV 1.03 puKINPORT 185.4 Mvar 1.09 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 221.4 Mvar 221.4 Mvar -285.8 Mvar 1.08 puMARION -465.1 Mvar 4 0 0 M W - 2 5 M v a r 9 4 6 M W - 2 0 4 M v a r 341 MW -62 Mvar 342 MW -63 Mvar 541 MW -11 Mvar 832 MW -97 Mvar 145 MW -218 Mvar 644 MW -124 Mvar 681 MW -100 Mvar 1478 MW -451 Mvar 37 MW -62 Mvar 881 MW 23 Mvar 1303 MW 107 Mvar 2 5 4 M W - 2 3 M v a r 1305 MW -24 Mvar 682 MW -87 Mvar 213 MW -3 Mvar 379 MW -85 Mvar 394 MW -91 Mvar 33 MW 107 Mvar 1.05 puANTICLIN 615 MW 22 Mvar 614 MW 23 Mvar 650 MW -44 Mvar 643 MW -80 Mvar 428 MW 42 Mvar 682 MW -87 Mvar 191 MW -90 Mvar 410 MW -10 Mvar 629 MW -71 Mvar 305 MW -3 Mvar 414 MW -89 Mvar 450 MW -96 Mvar 1360 MW 118 Mvar 1103 MW -128 Mvar 381 MW -369 Mvar 742 MW -85 Mvar 206 MW -66 Mvar 250 MW -32 Mvar 224 MW -18 Mvar 26 MW 6 Mvar 78 MW -21 Mvar 1 7 1 M W - 8 6 M v a r 106 MW -63 Mvar 354 MW -88 Mvar 182 MW -80 Mvar 172 MW -60 Mvar 181 MW -56 Mvar 182 MW -60 Mvar 1 2 7 M W 1 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.0 Mvar 1.03 puONTARIO 78 MW -21 Mvar 51 MW -23 Mvar 165 MW -45 Mvar 2 9 9 M W - 1 7 M v a r 257 MW 9 Mvar 81 MW 5 Mvar 25 MW -12 Mvar 25 MW -12 Mvar 25 MW -14 Mvar 30 MW -25 Mvar 84 MW 9 Mvar 108 MW 13 Mvar 1 2 9 M W 4 7 M v a r 1 2 8 M W 4 4 M v a r 746 MW -170 Mvar 1253 MW -336 Mvar 649 MW -98 Mvar 471 MW -91 Mvar 331 MW 31 Mvar 307 MW -16 Mvar 275 MW 32 Mvar 263 MW -32 Mvar 258 MW -31 Mvar 393 MW -15 Mvar 403 MW -16 Mvar 678 MW -91 Mvar 9 8 M W - 3 M v a r 1124 MW -206 Mvar 4 4 6 M W - 8 7 M v a r 4 6 6 M W - 6 7 M v a r 0 M W 0 M v a r 0 MW 0 Mvar ID-NW = 2862 MW Grassland = 1887 MW Summer Lake = 0 MW Lolo = 299 MW Walla Walla = 378 MW LaGrande = 250 MW Midpoint West = 2803 MW Borah West = 3061 MW Idaho-Sierra = 254 MW N of John Day = 96 MW COI = 1223 MW PDCI = 1100 MW ID-MT = 301 MW W of McNary = 2061 MW W of Slatt = 3652 MW Alturas Project = -328 MW Path C = 493 MW Montana Southeast = -649 MW TOT 2B1 = 616 MW TOT 2C = 631 MW 0 MW 0 Mvar 162 MW 46 Mvar 203 MW -91 Mvar 91 MW -15 Mvar 257 M W 91 M v a r 3 8 1 M W - 2 6 8 M v a r 1 8 8 7 M W - 1 0 1 4 M v a r 2006 MW 749 Mvar Page 541 of 776 Appendix H – 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Figure H4: 16la1sa_3400idnw_Path76 Base Case after the contingency N-1: Cal Sub 120 kV Phase Shifter 1.08 puMALIN-289.6 Mvar 0.0 Mvar 0.0 Mvar -173.9 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -290.4 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -865.3 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 460.1 Mvar 1.08 puPONDROSA -286.3 Mvar 2 9 7 M W - 2 0 4 M v a r 2 6 1 M W - 2 4 6 M v a r 2 3 9 M W - 1 6 8 M v a r 391 MW -44 Mvar 109 MW -90 Mvar 100 MW -94 Mvar 1383 MW 144 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.0 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.4 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.4 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.6 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.8 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.06 puIDAHO-NV 1.03 puKINPORT 184.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -288.9 Mvar 1.09 puMARION -468.9 Mvar 1 7 0 M W 4 9 M v a r 7 1 4 M W - 1 4 9 M v a r 97 MW -3 Mvar 97 MW -3 Mvar 541 MW 3 Mvar 756 MW -81 Mvar 23 MW 91 Mvar 476 MW -47 Mvar 585 MW -99 Mvar 1105 MW -274 Mvar 109 MW -140 Mvar 1195 MW -76 Mvar 1504 MW 172 Mvar 1 1 3 M W - 2 7 M v a r 1506 MW 92 Mvar 778 MW -83 Mvar 440 MW 8 Mvar 402 MW -94 Mvar 418 MW -100 Mvar 107 MW -42 Mvar 1.05 puANTICLIN 629 MW 34 Mvar 628 MW 35 Mvar 690 MW -68 Mvar 682 MW -107 Mvar 430 MW -3 Mvar 778 MW -83 Mvar 221 MW -78 Mvar 419 MW -15 Mvar 633 MW -76 Mvar 335 MW 10 Mvar 435 MW -95 Mvar 473 MW -103 Mvar 1424 MW 151 Mvar 1157 MW -147 Mvar 331 MW -370 Mvar 625 MW -43 Mvar 156 MW -41 Mvar 198 MW -23 Mvar 170 MW -18 Mvar 31 MW 4 Mvar 74 MW -15 Mvar 1 2 3 M W - 5 0 M v a r 68 MW -40 Mvar 289 MW -59 Mvar 164 MW -67 Mvar 153 MW -46 Mvar 163 MW -43 Mvar 163 MW -46 Mvar 5 3 M W 8 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.03 puONTARIO 74 MW -15 Mvar 38 MW -17 Mvar 118 MW -22 Mvar 2 3 0 M W - 1 9 M v a r 205 MW -15 Mvar 123 MW 2 Mvar 12 MW 12 Mvar 12 MW 12 Mvar 13 MW 13 Mvar 10 MW 24 Mvar 55 MW 5 Mvar 70 MW 7 Mvar 1 3 4 M W 6 5 M v a r 1 3 4 M W 6 2 M v a r 627 MW -156 Mvar 1239 MW -323 Mvar 613 MW -80 Mvar 421 MW -77 Mvar 302 MW 40 Mvar 280 MW -9 Mvar 250 MW 42 Mvar 235 MW -19 Mvar 230 MW -18 Mvar 353 MW 1 Mvar 362 MW 1 Mvar 597 MW -51 Mvar 3 8 M W 2 3 M v a r 894 MW -78 Mvar 2 7 9 M W - 2 9 M v a r 2 6 0 M W - 8 M v a r 9 4 4 M W - 1 9 6 M v a r 945 MW -272 Mvar ID-NW = 3427 MW Grassland = 1269 MW Summer Lake = 1383 MW Lolo = 230 MW Walla Walla = 307 MW LaGrande = 198 MW Midpoint West = 3297 MW Borah West = 3417 MW Idaho-Sierra = 113 MW N of John Day = -100 MW COI = 1616 MW PDCI = 1100 MW ID-MT = 258 MW W of McNary = 1981 MW W of Slatt = 2994 MW Alturas Project = -318 MW Path C = 719 MW Montana Southeast = -602 MW TOT 2B1 = 563 MW TOT 2C = 553 MW 1358 MW -172 Mvar 25 MW -48 Mvar 199 MW -80 Mvar 85 MW -3 Mvar 268 M W 127 M v a r 3 4 2 M W - 2 7 2 M v a r 1 2 6 9 M W - 3 1 4 M v a r 1318 MW 59 Mvar Page 542 of 776 Appendix H – 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Figure H5: 16la1sa_3400idnw_Path76 Base Case after the contingency BF IPC Populus-Chill-Hem 500 kV & Hem 500/230 Xfmr + RAS 1.09 puMALIN-294.9 Mvar 0.0 Mvar 0.0 Mvar -177.1 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -295.5 Mvar 1.10 puPONDROSB 1.09 puGRIZZLY -880.8 Mvar 1.10 puSUMMER L BURNS 0.0 Mvar 1.10 puHEMINWAY 486.0 Mvar 1.09 puPONDROSA -293.0 Mvar 2 3 9 M W - 2 0 3 M v a r 1 9 6 M W - 2 4 6 M v a r 1 5 1 M W - 6 6 M v a r 283 MW 75 Mvar 89 MW -61 Mvar 82 MW -68 Mvar 989 MW 31 Mvar 1.01 puHEMINWAY 1.10 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.10 puSLATT 0.0 Mvar 1.09 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.8 Mvar 1.09 pu GRASSLND 0.0 Mvar 1.09 puCOYOTE 1.08 puLOW MON -288.1 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.09 puCDR SPRG 1.10 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.02 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 124.5 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.02 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -152.9 Mvar 1.08 puLIT GOOS 1.02 puOXBOW 1.06 puMIDPOINT 447.5 Mvar 0.00 puCEDARHIL 0.0 Mvar 1.04 puBORAH 1.00 puMIDPOINT 0.0 Mvar 176.1 Mvar 1.07 puPOPULUS 0.0 Mvar 0.99 puBORAH 0.0 Mvar 0.99 puADELAIDE 1.03 puIDAHO-NV 1.00 puKINPORT 175.6 Mvar 1.08 puANTICLIN 0.0 Mvar 1.00 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.01 puPOPULUS 0.0 Mvar 1.00 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 219.4 Mvar 219.4 Mvar -289.8 Mvar 1.09 puMARION -473.4 Mvar 1 4 3 M W 3 8 M v a r 6 6 4 M W - 1 5 4 M v a r 92 MW -41 Mvar 92 MW -42 Mvar 519 MW 21 Mvar 716 MW -73 Mvar 187 MW -11 Mvar 312 MW 31 Mvar 573 MW -119 Mvar 889 MW -176 Mvar 261 MW -239 Mvar 1858 MW -570 Mvar 0 MW 0 Mvar 1 8 6 M W - 5 4 M v a r 0 MW 0 Mvar 1175 MW -70 Mvar 742 MW -85 Mvar 602 MW -152 Mvar 624 MW -162 Mvar 1112 MW 153 Mvar 1.05 puANTICLIN 644 MW 70 Mvar 643 MW 70 Mvar 1035 MW -115 Mvar 1025 MW -179 Mvar 694 MW -56 Mvar 1175 MW -70 Mvar 208 MW -53 Mvar 453 MW -5 Mvar 688 MW -111 Mvar 476 MW 57 Mvar 636 MW -116 Mvar 690 MW -124 Mvar 1128 MW 173 Mvar 1023 MW -62 Mvar 405 MW -419 Mvar 616 MW -54 Mvar 191 MW -65 Mvar 235 MW -36 Mvar 208 MW -24 Mvar 32 MW 4 Mvar 73 MW -17 Mvar 1 5 7 M W - 8 2 M v a r 103 MW -62 Mvar 334 MW -83 Mvar 181 MW -80 Mvar 170 MW -59 Mvar 180 MW -55 Mvar 181 MW -59 Mvar 1 0 3 M W - 1 0 M v a r HORSEFLT 1.01 puBOISEBCH 0.0 Mvar -75.8 Mvar 1.01 puONTARIO 73 MW -17 Mvar 47 MW -22 Mvar 145 MW -38 Mvar 2 7 1 M W - 2 3 M v a r 240 MW -4 Mvar 101 MW 19 Mvar 14 MW -29 Mvar 14 MW -29 Mvar 13 MW -31 Mvar 17 MW -43 Mvar 72 MW -2 Mvar 93 MW -1 Mvar 5 3 M W 4 9 M v a r 5 3 M W 4 8 M v a r 618 MW -171 Mvar 1180 MW -307 Mvar 618 MW -95 Mvar 454 MW -105 Mvar 339 MW 13 Mvar 315 MW -32 Mvar 283 MW 18 Mvar 271 MW -45 Mvar 266 MW -44 Mvar 406 MW -35 Mvar 415 MW -36 Mvar 702 MW -125 Mvar 7 7 M W 6 M v a r 801 MW -30 Mvar 2 0 4 M W - 1 8 M v a r 1 9 5 M W - 2 M v a r 6 8 3 M W - 1 0 2 M v a r 684 MW -152 Mvar ID-NW = 2742 MW Grassland = 847 MW Summer Lake = 989 MW Lolo = 271 MW Walla Walla = 355 MW LaGrande = 235 MW Midpoint West = 2605 MW Borah West = 2834 MW Idaho-Sierra = 186 MW N of John Day = 145 MW COI = 1194 MW PDCI = 1100 MW ID-MT = 324 MW W of McNary = 2126 MW W of Slatt = 2801 MW Alturas Project = -324 MW Path C = 446 MW Montana Southeast = -703 MW TOT 2B1 = 628 MW TOT 2C = 653 MW 978 MW -26 Mvar 0 MW 0 Mvar 130 MW -48 Mvar 19 MW 28 Mvar 105 M W 93 M v a r 3 4 9 M W - 2 8 1 M v a r 8 4 7 M W 7 2 M v a r 868 MW -155 Mvar Page 543 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.5 300.0 101.5% 370.0 82.3% BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.2 300.0 101.4% 370.0 82.2% BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr No Violations BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr No Violations BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV No Violations BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV No Violations BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.7 300.0 100.2% 370.0 81.3% BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 306.9 300.0 102.3% 370.0 82.9% BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 300.6 300.0 100.2% 370.0 81.3% BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.4 300.0 100.1% 370.0 81.2% BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 305.9 300.0 102.0% 370.0 82.7% BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV No Violations BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV No Violations BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations Page 544 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 308.3 300.0 102.8% 370.0 83.3% BF 4542 Paul-Allston 500 kV & Center G2 HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 302.0 300.0 100.7% 370.0 81.6% BF 4542 Paul-Napavine 500 kV & Center G1 BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 307.6 300.0 102.5% 370.0 83.1% BF 4542 Paul-Napavine 500 kV & Center G1 HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 301.4 300.0 100.5% 370.0 81.5% BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 193.1 266.5 254.0 104.9% 307.0 86.8% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 302.9 300.0 101.0% 370.0 81.9% BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4708 Hatwai 500 kV Bus BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.7 300.0 100.2% 370.0 81.3% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 301.4 300.0 100.5% 370.0 81.5% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.8 300.0 100.3% 370.0 81.3% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 312.9 300.0 104.3% 370.0 84.6% BF 4888 Ashe-Slatt & CGS 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 306.3 300.0 102.1% 370.0 82.8% BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 52.2 50.0 104.3% 55.0 94.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 338.7 300.0 112.9% 370.0 91.5% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 330.4 300.0 110.1% 370.0 89.3% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 311.0 300.0 103.7% 370.0 84.0% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 311.0 300.0 103.7% 370.0 84.0% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 321.2 315.0 102.0% 394.0 81.5% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 320.6 315.0 101.8% 394.0 81.4% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1401.9 2206.3 2000.1 110.3% 3000.0 73.5% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1420.6 2181.0 2000.1 109.0% 3000.0 72.7% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 52.7 50.0 105.4% 55.0 95.8% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 338.0 300.0 112.7% 370.0 91.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 329.8 300.0 109.9% 370.0 89.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 309.0 300.0 103.0% 370.0 83.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 309.0 300.0 103.0% 370.0 83.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 319.8 315.0 101.5% 394.0 81.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 319.2 315.0 101.3% 394.0 81.0% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1401.9 2202.4 2000.1 110.1% 3000.0 73.4% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1420.6 2171.5 2000.1 108.6% 3000.0 72.4% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 302.2 300.0 100.7% 370.0 81.7% Page 545 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 305.6 300.0 101.9% 370.0 82.6% BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.7 300.0 101.6% 370.0 82.4% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 193.1 266.2 254.0 104.8% 307.0 86.7% BF 5214 Low Mon-McNary & Calpine PH 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 306.0 300.0 102.0% 370.0 82.7% BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 331.3 300.0 110.4% 370.0 89.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 322.6 300.0 107.5% 370.0 87.2% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 306.3 300.0 102.1% 370.0 82.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 306.3 300.0 102.1% 370.0 82.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 89.7 118.6 112.0 105.9% 146.7 80.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 317.9 315.0 100.9% 394.0 80.7% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 317.4 315.0 100.7% 394.0 80.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1503.2 2312.2 1732.1 133.5% 2338.3 98.9% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.993 0.929 6.45% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.991 0.931 6.05% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr AMPS (65025) % Δ Volts 0.992 0.942 5.04% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 51.1 50.0 102.2% 55.0 92.9% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 336.8 300.0 112.3% 370.0 91.0% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 328.7 300.0 109.6% 370.0 88.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 308.9 300.0 103.0% 370.0 83.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 308.9 300.0 103.0% 370.0 83.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 319.7 315.0 101.5% 394.0 81.1% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 319.1 315.0 101.3% 394.0 81.0% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1401.9 2260.2 2000.1 113.0% 3000.0 75.3% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1420.6 2232.1 2000.1 111.6% 3000.0 74.4% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 50.4 50.0 100.9% 55.0 91.7% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 334.2 300.0 111.4% 370.0 90.3% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 326.1 300.0 108.7% 370.0 88.1% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr CEDARHIL (60159) -> CEDHEM21 (61992) CKT 2 at CEDARHIL Branch Amp 1599.8 2376.2 2309.4 102.9% 3464.1 68.6% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr POPULUS (67794) -> POPCED21 (61963) CKT 2 at POPULUS Branch Amp 1607.7 2352.0 2309.4 101.8% 3464.1 67.9% Page 546 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 316.8 300.0 105.6% 370.0 85.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 310.2 300.0 103.4% 370.0 83.8% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 304.7 300.0 101.6% 370.0 82.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 304.7 300.0 101.6% 370.0 82.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 315.6 315.0 100.2% 394.0 80.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 315.2 315.0 100.1% 394.0 80.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1283.7 2361.9 1732.1 136.4% 2338.3 101.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1146.4 1838.2 1701.6 108.0% 2108.6 87.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1130.8 1819.8 1650.1 110.3% 2227.4 81.7% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1136.5 1831.9 1492.7 122.7% 2264.2 80.9% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 333.7 300.0 111.2% 370.0 90.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 326.3 300.0 108.8% 370.0 88.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 321.6 300.0 107.2% 370.0 86.9% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 321.6 300.0 107.2% 370.0 86.9% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 328.5 315.0 104.3% 394.0 83.4% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 327.7 315.0 104.0% 394.0 83.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 89.7 120.0 112.0 107.2% 146.7 81.8% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1146.4 1755.4 1701.6 103.2% 2108.6 83.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1130.8 1739.9 1650.1 105.4% 2227.4 78.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1136.5 1751.8 1492.7 117.4% 2264.2 77.4% BF Lolo 230kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 301.3 300.0 100.4% 370.0 81.4% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 50.6 50.0 101.2% 55.0 92.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 332.0 300.0 110.7% 370.0 89.7% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 323.2 300.0 107.7% 370.0 87.4% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 306.2 300.0 102.1% 370.0 82.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 306.2 300.0 102.1% 370.0 82.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 317.7 315.0 100.9% 394.0 80.6% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 317.2 315.0 100.7% 394.0 80.5% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 89.7 117.3 112.0 104.8% 146.7 80.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1503.2 2262.6 1732.1 130.6% 2338.3 96.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts 0.993 0.931 6.24% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.991 0.934 5.75% BF PGE Grassland-Coyote 500 kV & Carty Gas Project No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 307.6 300.0 102.5% 370.0 83.1% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 301.4 300.0 100.5% 370.0 81.5% Bus: Alvey 500 kV No Violations Bus: Bell BPA 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.2 300.0 101.4% 370.0 82.2% Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 52.6 50.0 105.3% 55.0 95.7% Bus: Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 339.1 300.0 113.0% 370.0 91.7% Page 547 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts Bus: Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 330.8 300.0 110.3% 370.0 89.4% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 311.0 300.0 103.7% 370.0 84.1% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 311.0 300.0 103.7% 370.0 84.1% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 321.2 315.0 102.0% 394.0 81.5% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 320.7 315.0 101.8% 394.0 81.4% Bus: Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1401.9 2205.2 2000.1 110.3% 3000.0 73.5% Bus: Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1420.6 2180.1 2000.1 109.0% 3000.0 72.7% N-1: Allston-Keeler 500 kV No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.3 300.0 100.1% 370.0 81.2% N-1: Bell-Taft 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.0 300.0 101.3% 370.0 82.2% N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 301.0 300.0 100.3% 370.0 81.4% N-1: Broadview-Garrison #1 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.5 300.0 100.2% 370.0 81.2% N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Cal Sub 120 kV Phase Shifter BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 327.6 300.0 109.2% 370.0 88.5% N-1: Cal Sub 120 kV Phase Shifter HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 319.8 300.0 106.6% 370.0 86.4% N-1: Captain Jack-Olinda 500 kV No Violations N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV No Violations N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV No Violations N-1: Drycreek-Lolo 230 kV No Violations Page 548 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.7 300.0 100.2% 370.0 81.3% N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.7 300.0 100.2% 370.0 81.3% N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 344.5 315.0 109.4% 394.0 87.4% N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 343.5 315.0 109.0% 394.0 87.2% N-1: Hatwai 500/230 kV Xfmr No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.8 300.0 100.3% 370.0 81.3% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV No Violations N-1: Hells Canyon-Walla Walla 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 302.7 300.0 100.9% 370.0 81.8% N-1: Hemingway-Grassland 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 50.0 50.0 100.0% 55.0 90.9% N-1: Hemingway-Grassland 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 330.9 300.0 110.3% 370.0 89.4% N-1: Hemingway-Grassland 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 322.3 300.0 107.4% 370.0 87.1% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 304.9 300.0 101.6% 370.0 82.4% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 304.9 300.0 101.6% 370.0 82.4% N-1: Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 89.7 119.7 112.0 106.9% 146.7 81.6% N-1: Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 316.8 315.0 100.6% 394.0 80.4% N-1: Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 316.3 315.0 100.4% 394.0 80.3% N-1: Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1503.2 2252.3 1732.1 130.0% 2338.3 96.3% N-1: Hemingway-Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 52.8 50.0 105.7% 55.0 96.1% N-1: Hemingway-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 337.2 300.0 112.4% 370.0 91.1% N-1: Hemingway-Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 329.0 300.0 109.7% 370.0 88.9% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 308.8 300.0 102.9% 370.0 83.5% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 308.8 300.0 102.9% 370.0 83.5% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 319.6 315.0 101.5% 394.0 81.1% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 319.1 315.0 101.3% 394.0 81.0% N-1: Hemingway-Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1401.9 2211.1 2000.1 110.6% 3000.0 73.7% Page 549 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Hemingway-Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1420.6 2186.1 2000.1 109.3% 3000.0 72.9% N-1: Hill Top 345/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.4 177.5 150.0 118.3% 180.0 98.6% N-1: Hill Top 345/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 315.0 435.5 415.7 104.8% 483.5 90.1% N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 335.1 300.0 111.7% 370.0 90.6% N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 335.1 300.0 111.7% 370.0 90.6% N-1: Huntington-Pinto-Four Corners 345 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.3 300.0 100.1% 370.0 81.2% N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 52.3 50.0 104.7% 55.0 95.2% N-1: LaGrande-North Powder 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.8 300.0 100.3% 370.0 81.3% N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.4 152.8 150.0 101.9% 180.0 84.9% N-1: Malin-Round Mtn #1 500 kV No Violations N-1: Malin-Round Mtn #2 500 kV No Violations N-1: Malin-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 305.3 300.0 101.8% 370.0 82.5% N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 326.7 300.0 108.9% 370.0 88.3% N-1: Midpoint-Hemingway 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 319.1 300.0 106.4% 370.0 86.3% N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations Page 550 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 301.4 300.0 100.5% 370.0 81.4% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV No Violations N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 332.2 300.0 110.7% 370.0 89.8% N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 332.2 300.0 110.7% 370.0 89.8% N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Populus-Cedar Hill-Hemingway 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 315.1 300.0 105.0% 370.0 85.2% N-1: Populus-Cedar Hill-Hemingway 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 308.6 300.0 102.9% 370.0 83.4% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 303.4 300.0 101.1% 370.0 82.0% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 303.4 300.0 101.1% 370.0 82.0% N-1: Populus-Cedar Hill-Hemingway 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1283.7 2191.5 1732.1 126.5% 2338.3 93.7% N-1: Populus-Cedar Hill-Hemingway 500 kV BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1146.4 1840.3 1701.6 108.2% 2108.6 87.3% N-1: Populus-Cedar Hill-Hemingway 500 kV BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1130.8 1821.8 1650.1 110.4% 2227.4 81.8% N-1: Populus-Cedar Hill-Hemingway 500 kV POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1136.5 1834.0 1492.7 122.9% 2264.2 81.0% N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.4 344.4 315.0 109.3% 394.0 87.4% N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.4 343.3 315.0 109.0% 394.0 87.1% N-1: Robinson-Harry Allen 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 358.5 300.0 119.5% 370.0 96.9% N-1: Robinson-Harry Allen 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 347.4 300.0 115.8% 370.0 93.9% N-1: Robinson-Harry Allen 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.4 162.9 150.0 108.6% 180.0 90.5% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 307.5 300.0 102.5% 370.0 83.1% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 307.5 300.0 102.5% 370.0 83.1% N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV No Violations N-1: Roundup-Lagrande 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.9 50.4 50.0 100.8% 55.0 91.6% N-1: Roundup-Lagrande 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.2 300.0 100.1% 370.0 81.1% N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV No Violations N-1: Table Mtn-Vaca Dixon 500 kV No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations Page 551 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.8 300.0 100.3% 370.0 81.3% N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 300.1 300.0 100.0% 370.0 81.1% N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 320.4 300.0 106.8% 370.0 86.6% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 313.2 300.0 104.4% 370.0 84.7% N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV BRIDGER (60085) -> BRI3MI11 (61999) CKT 1 at BRIDGER Branch Amp 1056.3 1735.1 1600.0 108.4% 1840.0 94.3% N-2: Bridger-Populus #1 & #2 345 kV BRI3MI11 (61999) -> 3MIKNOLL (60084) CKT 1 at 3MIKNOLL Branch Amp 1056.3 1709.2 1650.1 103.6% 2227.4 76.7% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> POPBRI11 (61968) CKT 1 at BRIDGER Branch Amp 1003.7 1779.0 1492.7 119.2% 1849.2 96.2% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV POPBRI11 (61968) -> POPULUS (67790) CKT 1 at POPULUS Branch Amp 991.9 1762.1 1650.1 106.8% 2227.6 79.1% N-2: Broadview-Garrison #1 & #2 500 kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 319.5 300.0 106.5% 370.0 86.4% N-2: Broadview-Garrison #1 & #2 500 kV + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 89.7 125.3 112.0 111.9% 146.7 85.4% N-2: Broadview-Garrison #1 & #2 500 kV + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 312.5 300.0 104.2% 370.0 84.5% N-2: Broadview-Garrison #1 & #2 500 kV + RAS ABSAROKE (62201) % Δ Volts 0.955 0.877 8.17% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLBUSAT (62224) % Δ Volts 0.975 0.900 7.69% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLUMBUS (62015) % Δ Volts 0.978 0.903 7.67% N-2: Broadview-Garrison #1 & #2 500 kV + RAS BGTMBERA (62250) % Δ Volts 1.009 0.936 7.23% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLRPLJE (62220) % Δ Volts 1.000 0.929 7.10% N-2: Broadview-Garrison #1 & #2 500 kV + RAS DUCKCR-R (62325) % Δ Volts 1.015 0.944 7.00% N-2: Broadview-Garrison #1 & #2 500 kV + RAS WILSALL (62019) % Δ Volts 1.036 0.965 6.85% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLRPLJE (62205) % Δ Volts 1.000 0.937 6.30% N-2: Broadview-Garrison #1 & #2 500 kV + RAS WILSALL (62016) % Δ Volts 1.033 0.968 6.29% N-2: Broadview-Garrison #1 & #2 500 kV + RAS CLYDE P (62108) % Δ Volts 1.026 0.966 5.85% N-2: Broadview-Garrison #1 & #2 500 kV + RAS THRRIVER (62331) % Δ Volts 1.032 0.979 5.14% N-2: Broadview-Garrison #1 & #2 500 kV + RAS STANFRDM (62231) % Δ Volts 1.033 0.980 5.13% N-2: Broadview-Garrison #1 & #2 500 kV + RAS KINGHILL (62170) % Δ Volts 1.045 0.992 5.07% N-2: Broadview-Garrison #1 & #2 500 kV + RAS UTICA (62238) % Δ Volts 1.029 0.977 5.05% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.9 300.0 101.6% 370.0 82.4% N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 297.8 300.0 300.0 100.0% 370.0 81.1% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations Page 552 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV No Violations N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 302.2 300.0 100.7% 370.0 81.7% N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 302.2 300.0 100.7% 370.0 81.7% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 270.7 345.6 300.0 115.2% 370.0 93.4% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 270.7 345.6 300.0 115.2% 370.0 93.4% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO Branch MVA 290.4 364.7 315.0 115.8% 394.0 92.6% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO Branch MVA 290.4 363.3 315.0 115.3% 394.0 92.2% N-2: Double Palo Verde CR_NEST1 (54458) -> CBK 500 (50791) CKT 1 at CR_NEST1 Branch Amp 430.1 1104.4 1085.4 101.8% 1199.7 92.1% N-2: Double Palo Verde CHOLLA (14000) -> CHOSAG11 (14014) CKT 1 at CHOSAG11 Branch Amp 970.5 1065.0 1026.0 103.8% 1538.1 69.2% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 319.6 300.0 106.5% 370.0 86.4% N-2: Garrison-Taft #1 & #2 500 kV + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 312.5 300.0 104.2% 370.0 84.5% N-2: Garrison-Taft #1 & #2 500 kV + RAS PLACIDLK (62344) % Δ Volts 1.026 0.962 6.24% N-2: Garrison-Taft #1 & #2 500 kV + RAS DIXON MV (40348) % Δ Volts 1.026 0.969 5.56% N-2: Garrison-Taft #1 & #2 500 kV + RAS RATTLE S (40867) % Δ Volts 1.025 0.970 5.37% N-2: Garrison-Taft #1 & #2 500 kV + RAS DIAMNDMT (62295) % Δ Volts 1.022 0.968 5.28% N-2: Garrison-Taft #1 & #2 500 kV + RAS SUPERRMT (62296) % Δ Volts 1.022 0.968 5.28% N-2: Garrison-Taft #1 & #2 500 kV + RAS TARKIO-R (62294) % Δ Volts 1.025 0.971 5.27% N-2: Garrison-Taft #1 & #2 500 kV + RAS ST REGIS (62297) % Δ Volts 1.020 0.967 5.20% N-2: Garrison-Taft #1 & #2 500 kV + RAS ALBERTON (62293) % Δ Volts 1.029 0.976 5.15% N-2: Garrison-Taft #1 & #2 500 kV + RAS HUSON-R (62300) % Δ Volts 1.032 0.980 5.04% N-2: Garrison-Taft #1 & #2 500 kV + RAS HAMLTNMT (62074) % Δ Volts 1.014 0.963 5.03% N-2: Garrison-Taft #1 & #2 500 kV + RAS HAUGEN (62298) % Δ Volts 1.018 0.967 5.01% N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 303.1 300.0 101.0% 370.0 81.9% N-2: Grassland-Coyote & Slatt - Longhorn 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV No Violations N-2: Grizzly-Malin & Malin-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 309.0 300.0 103.0% 370.0 83.5% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 302.5 300.0 100.8% 370.0 81.7% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 226.0 267.0 252.0 105.9% 271.1 98.5% N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 303.2 300.0 101.1% 370.0 82.0% N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV No Violations N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV No Violations N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV No Violations N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations Page 553 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Lower Granite-Central Ferry #1 & #2 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 301.4 300.0 100.5% 370.0 81.5% N-2: Malin-Round Mtn #1 & #2 500 kV No Violations N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 327.6 300.0 109.2% 370.0 88.6% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 320.0 300.0 106.7% 370.0 86.5% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV No Violations N-2: Schultz-Wautoma & Vantage-Schultz 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 226.0 255.1 252.0 101.2% 271.1 94.1% N-2: Sickler-Schultz & Schultz-Vantage 500 kV No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.0 300.0 101.3% 370.0 82.2% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 307.8 300.0 102.6% 370.0 83.2% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 292.0 301.5 300.0 100.5% 370.0 81.5% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 226.0 254.4 252.0 100.9% 271.1 93.8% N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 304.0 300.0 101.3% 370.0 82.2% N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 305.5 300.0 101.8% 370.0 82.6% N-2: Taft-Dworshak & Garrison-Taft #1 500kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 297.8 302.2 300.0 100.7% 370.0 81.7% N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 554 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.70 -803 0.70 -1972 0.70 -344 0.70 -737 0.71 -4676 0.72 -1789 0.80 -1582 0.70 -918 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.70 -804 0.70 -1982 0.70 -345 0.70 -737 0.71 -4610 0.72 -1797 0.79 -1588 0.70 -919 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.70 -809 0.70 -2024 0.70 -347 0.70 -741 0.71 -4795 0.71 -1837 0.79 -1632 0.70 -924 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.70 -809 0.70 -2040 0.70 -348 0.70 -740 0.70 -4750 0.71 -1850 0.79 -1644 0.70 -924 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.70 -810 0.70 -2050 0.70 -351 0.70 -741 0.73 -4813 0.71 -1859 0.79 -1651 0.70 -925 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.70 -788 0.70 -2050 0.70 -249 0.70 -742 0.70 -4881 0.71 -1858 0.79 -1649 0.70 -904 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.70 -809 0.70 -2006 0.70 -350 0.70 -737 0.73 -4835 0.72 -1819 0.79 -1614 0.70 -923 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.70 -804 0.70 -2015 0.70 -340 0.70 -737 0.70 -4423 0.71 -1839 0.79 -1639 0.70 -919 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.70 -813 0.70 -2071 0.70 -355 0.70 -741 0.71 -4555 0.71 -1877 0.79 -1669 0.70 -928 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.70 -805 0.70 -2028 0.70 -340 0.70 -737 0.71 -4089 0.71 -1853 0.79 -1653 0.70 -919 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.70 -809 0.70 -2042 0.70 -350 0.70 -739 0.76 -4635 0.71 -1853 0.79 -1646 0.70 -924 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.70 -809 0.70 -2039 0.70 -350 0.70 -740 0.77 -4503 0.71 -1854 0.79 -1649 0.70 -924 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.70 -809 0.70 -2009 0.70 -350 0.70 -738 0.73 -4845 0.72 -1822 0.79 -1616 0.70 -924 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.70 -807 0.70 -1962 0.70 -349 0.70 -734 0.75 -4611 0.72 -1781 0.79 -1575 0.70 -921 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500KV + RAS 0.70 -800 0.70 -1813 0.70 -343 0.70 -725 0.80 -4234 0.74 -1661 0.79 -1466 0.70 -914 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.70 -806 0.70 -2031 0.70 -346 0.70 -738 0.71 -4708 0.71 -1854 0.79 -1651 0.70 -921 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.70 -808 0.70 -2039 0.70 -348 0.70 -739 0.70 -4774 0.71 -1852 0.79 -1646 0.70 -923 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.70 -807 0.70 -1990 0.70 -350 0.70 -736 0.72 -4927 0.72 -1800 0.79 -1590 0.70 -922 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.70 -809 0.70 -2040 0.70 -349 0.70 -740 0.76 -4581 0.71 -1853 0.79 -1647 0.70 -924 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.70 -789 0.70 -2047 0.70 -249 0.70 -741 0.71 -4472 0.71 -1862 0.79 -1657 0.70 -904 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.70 -810 0.70 -2048 0.70 -350 0.70 -740 0.73 -4811 0.71 -1858 0.79 -1650 0.70 -925 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -741 0.75 -4702 0.71 -1861 0.79 -1652 0.70 -925 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.70 -810 0.70 -2044 0.70 -350 0.70 -740 0.74 -4777 0.71 -1855 0.79 -1648 0.70 -925 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.70 -810 0.70 -2019 0.70 -352 0.70 -740 0.78 -4639 0.71 -1849 0.79 -1647 0.70 -925 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.70 -804 0.70 -1933 0.70 -347 0.70 -737 0.77 -4518 0.73 -1757 0.80 -1548 0.70 -919 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.70 -810 0.70 -2045 0.70 -351 0.70 -740 0.74 -4794 0.71 -1856 0.79 -1649 0.70 -925 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.70 -809 0.70 -2040 0.70 -350 0.70 -739 0.75 -4626 0.71 -1852 0.79 -1645 0.70 -924 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.73 -4887 0.71 -1860 0.79 -1651 0.70 -925 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.72 -4915 0.71 -1861 0.79 -1652 0.70 -925 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV 0.70 -812 0.70 -2049 0.70 -353 0.70 -741 0.74 -4740 0.71 -1858 0.79 -1650 0.70 -927 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV 0.70 -810 0.70 -2056 0.70 -352 0.70 -741 0.73 -4820 0.71 -1862 0.79 -1653 0.70 -925 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.70 -810 0.70 -2057 0.70 -351 0.70 -741 0.75 -4722 0.71 -1862 0.79 -1652 0.70 -925 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4851 0.71 -1859 0.79 -1650 0.70 -925 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.72 -4912 0.71 -1860 0.79 -1651 0.70 -925 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.75 -4723 0.71 -1860 0.79 -1651 0.70 -925 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV 0.70 -807 0.70 -2034 0.70 -346 0.70 -738 0.76 -4386 0.71 -1851 0.79 -1645 0.70 -921 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.70 -809 0.70 -2038 0.70 -349 0.70 -740 0.76 -4533 0.71 -1853 0.79 -1647 0.70 -923 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.70 -810 0.70 -2044 0.70 -350 0.70 -740 0.74 -4778 0.71 -1855 0.79 -1648 0.70 -924 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.70 -810 0.70 -2046 0.70 -350 0.70 -740 0.73 -4820 0.71 -1856 0.79 -1649 0.70 -925 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.70 -809 0.70 -2041 0.70 -350 0.70 -740 0.74 -4731 0.71 -1853 0.79 -1647 0.70 -924 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.70 -809 0.70 -2045 0.70 -350 0.70 -740 0.74 -4770 0.71 -1855 0.79 -1648 0.70 -924 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.74 -4745 0.71 -1859 0.79 -1650 0.70 -925 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.70 -812 0.70 -2049 0.70 -353 0.70 -741 0.76 -4591 0.71 -1857 0.79 -1649 0.70 -927 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.76 -4659 0.71 -1858 0.79 -1650 0.70 -925 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -741 0.76 -4620 0.71 -1860 0.79 -1651 0.70 -925 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.73 -4869 0.71 -1860 0.79 -1651 0.70 -925 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.70 -801 0.70 -1918 0.70 -344 0.70 -734 0.78 -4429 0.73 -1733 0.80 -1523 0.70 -916 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.70 -802 0.70 -1930 0.70 -345 0.70 -735 0.77 -4528 0.73 -1742 0.80 -1532 0.70 -917 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4877 0.71 -1858 0.79 -1649 0.70 -925 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.70 -810 0.70 -2056 0.70 -352 0.70 -741 0.72 -4951 0.71 -1861 0.79 -1651 0.70 -925 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.70 -810 0.70 -2035 0.70 -352 0.70 -740 0.77 -4648 0.71 -1852 0.79 -1648 0.70 -925 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.75 -4719 0.71 -1858 0.79 -1650 0.70 -925 Page 555 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.70 -806 0.70 -1981 0.70 -349 0.70 -737 0.72 -4949 0.72 -1785 0.79 -1574 0.70 -921 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4859 0.71 -1857 0.79 -1649 0.70 -925 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.70 -810 0.70 -2058 0.70 -351 0.70 -740 0.72 -4965 0.71 -1862 0.79 -1652 0.70 -925 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4843 0.71 -1859 0.79 -1651 0.70 -925 BF 4708 HATWAI 500 KV BUS 0.70 -807 0.70 -1990 0.70 -349 0.70 -735 0.73 -4859 0.72 -1807 0.79 -1600 0.70 -922 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4893 0.71 -1857 0.79 -1648 0.70 -925 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV 0.70 -806 0.70 -1990 0.70 -348 0.70 -735 0.74 -4785 0.72 -1813 0.79 -1607 0.70 -921 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.70 -807 0.70 -1997 0.70 -349 0.70 -736 0.73 -4833 0.72 -1818 0.79 -1613 0.70 -921 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -741 0.75 -4690 0.71 -1861 0.79 -1652 0.70 -925 BF 4888 ASHE-SLATT & CGS 500 KV 0.70 -798 0.71 -1849 0.70 -342 0.70 -733 0.77 -4485 0.74 -1673 0.80 -1465 0.70 -912 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.70 -809 0.70 -2034 0.70 -350 0.70 -740 0.74 -4760 0.71 -1851 0.79 -1646 0.70 -924 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.70 -809 0.70 -2026 0.70 -349 0.70 -740 0.76 -4484 0.71 -1850 0.79 -1648 0.70 -924 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.70 -808 0.70 -2031 0.70 -348 0.70 -738 0.76 -4471 0.71 -1847 0.79 -1642 0.70 -923 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.70 -768 0.70 -1608 0.70 -327 0.70 -707 0.76 -4300 0.71 -1703 0.80 -1705 0.70 -879 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.70 -770 0.70 -1681 0.70 -329 0.70 -714 0.75 -4374 0.71 -1773 0.80 -1771 0.70 -882 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.70 -813 0.70 -2067 0.70 -355 0.70 -742 0.70 -4189 0.71 -1869 0.79 -1659 0.70 -928 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.70 -805 0.70 -2020 0.70 -347 0.70 -737 0.73 -4709 0.71 -1862 0.79 -1663 0.70 -920 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.70 -802 0.70 -2013 0.70 -346 0.70 -735 0.76 -4479 0.71 -1869 0.79 -1679 0.70 -916 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.70 -807 0.70 -2036 0.70 -348 0.70 -738 0.76 -4484 0.71 -1859 0.79 -1655 0.70 -922 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.70 -807 0.70 -2033 0.70 -349 0.70 -739 0.74 -4730 0.71 -1862 0.79 -1659 0.70 -922 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.70 -808 0.70 -2042 0.70 -349 0.70 -739 0.73 -4814 0.71 -1862 0.79 -1656 0.70 -922 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.70 -808 0.70 -2019 0.70 -348 0.70 -740 0.71 -4656 0.71 -1848 0.79 -1650 0.70 -923 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.70 -808 0.70 -2036 0.70 -347 0.70 -739 0.73 -4619 0.71 -1850 0.79 -1645 0.70 -923 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.75 -4725 0.71 -1861 0.79 -1652 0.70 -925 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.70 -810 0.70 -2050 0.70 -351 0.70 -740 0.73 -4858 0.71 -1858 0.79 -1649 0.70 -925 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.70 -809 0.70 -2038 0.70 -350 0.70 -740 0.74 -4751 0.71 -1850 0.79 -1644 0.70 -924 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.70 -810 0.70 -2048 0.70 -351 0.70 -741 0.74 -4751 0.71 -1857 0.79 -1650 0.70 -925 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.70 -810 0.70 -2050 0.70 -351 0.70 -740 0.76 -4619 0.71 -1858 0.79 -1650 0.70 -925 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.70 -810 0.70 -2034 0.70 -351 0.70 -740 0.73 -4855 0.71 -1858 0.79 -1653 0.70 -925 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.70 -805 0.70 -1916 0.70 -347 0.70 -736 0.74 -4788 0.73 -1758 0.80 -1553 0.70 -919 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.70 -810 0.70 -2037 0.70 -352 0.70 -740 0.78 -4610 0.71 -1854 0.79 -1649 0.70 -925 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.70 -804 0.70 -1920 0.70 -346 0.70 -736 0.78 -4388 0.73 -1748 0.80 -1540 0.70 -918 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.70 -809 0.70 -2044 0.70 -350 0.70 -740 0.74 -4803 0.71 -1855 0.79 -1648 0.70 -924 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.70 -810 0.70 -2046 0.70 -351 0.70 -740 0.73 -4798 0.71 -1857 0.79 -1649 0.70 -925 BF 5266 SLATT-BUCKLY 500 KV 0.70 -807 0.70 -2051 0.70 -349 0.70 -739 0.72 -4773 0.71 -1864 0.79 -1657 0.70 -922 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.73 -4869 0.71 -1860 0.79 -1651 0.70 -925 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.70 -810 0.70 -2050 0.70 -351 0.70 -741 0.73 -4817 0.71 -1859 0.79 -1651 0.70 -925 BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.70 -768 0.70 -1177 0.70 -320 0.70 -696 0.76 -4370 0.72 -1447 0.82 -1474 0.70 -880 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.70 -770 0.70 -1416 0.70 -329 0.70 -709 0.78 -4357 0.71 -1659 0.81 -1651 0.70 -882 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.70 -772 0.70 -1234 0.70 -329 0.70 -703 0.77 -4538 0.70 -1415 0.77 -1372 0.70 -884 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR 0.70 -793 0.70 -1531 0.70 -344 0.70 -708 0.76 -4783 0.71 -1413 0.80 -1264 0.70 -906 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.70 -774 0.70 -1431 0.70 -335 0.70 -678 0.76 -4789 0.71 -1180 0.81 -1226 0.70 -882 BF LOLO 230KV 0.70 -806 0.70 -1998 0.70 -348 0.70 -736 0.73 -4865 0.71 -1839 0.79 -1642 0.70 -921 BF PGE GRASSLAND-CEDAR SPRING & HEMINGWAY-GRASSLAND 500 KV 0.70 -767 0.70 -1364 0.70 -319 0.70 -698 0.78 -4223 0.72 -1502 0.81 -1544 0.70 -879 BF PGE GRASSLAND-COYOTE 500 KV & CARTY GAS PROJECT 0.70 -810 0.70 -2014 0.70 -351 0.70 -740 0.72 -4909 0.71 -1846 0.79 -1643 0.70 -925 BF PGE SLATT-GRASSLAND 500 KV & BOARDMAN COAL GEN 0.70 -803 0.70 -1891 0.70 -346 0.70 -735 0.74 -4820 0.73 -1739 0.80 -1544 0.70 -917 BUS: ALVEY 500 KV 0.70 -808 0.70 -2040 0.70 -346 0.70 -739 0.71 -4630 0.71 -1853 0.79 -1647 0.70 -923 BUS: BELL BPA 500 KV 0.70 -802 0.70 -1874 0.70 -345 0.70 -728 0.77 -4522 0.73 -1719 0.79 -1524 0.70 -916 BUS: BUCKLEY 500 KV 0.70 -805 0.70 -2024 0.70 -345 0.70 -737 0.73 -4570 0.71 -1847 0.79 -1645 0.70 -920 BUS: DIXONVILLE 500 KV 0.70 -809 0.70 -2044 0.70 -348 0.70 -740 0.72 -4621 0.71 -1853 0.79 -1646 0.70 -924 BUS: HOT SPRINGS 500 KV 0.70 -810 0.70 -2059 0.70 -352 0.70 -741 0.72 -4944 0.71 -1864 0.79 -1655 0.70 -925 BUS: KEELER 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.76 -4512 0.71 -1859 0.79 -1650 0.70 -925 Page 556 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BUS: ROCK CREEK 500 KV 0.70 -809 0.70 -2029 0.70 -349 0.70 -739 0.74 -4757 0.71 -1841 0.79 -1634 0.70 -923 BUS: SICKLER 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.73 -4880 0.71 -1859 0.79 -1650 0.70 -925 BUS: SUMMER LAKE 500 KV 0.70 -768 0.70 -1610 0.70 -328 0.70 -707 0.75 -4324 0.71 -1705 0.80 -1706 0.70 -879 N-1: ALLSTON-KEELER 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.74 -4756 0.71 -1859 0.79 -1650 0.70 -925 N-1: ALLSTON-NAPAVINE 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4843 0.71 -1859 0.79 -1650 0.70 -925 N-1: ALLSTON-PAUL #2 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4857 0.71 -1859 0.79 -1651 0.70 -925 N-1: ALVERY-DIXONVILLE 500 KV 0.70 -809 0.70 -2048 0.70 -348 0.70 -740 0.73 -4623 0.71 -1857 0.79 -1649 0.70 -924 N-1: ALVEY-MARION 500 KV 0.70 -808 0.70 -2052 0.70 -349 0.70 -740 0.74 -4600 0.71 -1860 0.79 -1652 0.70 -923 N-1: ASHE-HANFORD 500 KV 0.70 -809 0.70 -2041 0.70 -350 0.70 -740 0.76 -4527 0.71 -1855 0.79 -1650 0.70 -924 N-1: ASHE-LOW MON 500 KV 0.70 -810 0.70 -2047 0.70 -351 0.70 -740 0.73 -4876 0.71 -1856 0.79 -1648 0.70 -925 N-1: ASHE-MARION 500 KV 0.70 -808 0.70 -2039 0.70 -348 0.70 -739 0.74 -4727 0.71 -1852 0.79 -1646 0.70 -923 N-1: ASHE-SLATT 500 KV 0.70 -810 0.70 -2042 0.70 -351 0.70 -740 0.73 -4820 0.71 -1856 0.79 -1650 0.70 -925 N-1: BELL-COULEE 500 KV 0.70 -807 0.70 -2000 0.70 -349 0.70 -736 0.73 -4862 0.72 -1819 0.79 -1613 0.70 -922 N-1: BELL-TAFT 500 KV 0.70 -802 0.70 -1875 0.70 -345 0.70 -729 0.79 -4225 0.73 -1721 0.79 -1526 0.70 -916 N-1: BIG EDDY-CELILO 500 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4933 0.71 -1862 0.79 -1652 0.70 -925 N-1: BIG EDDY-JOHN DAY 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -741 0.72 -4905 0.71 -1861 0.79 -1652 0.70 -925 N-1: BIG EDDY-KNIGHT 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4891 0.71 -1859 0.79 -1651 0.70 -925 N-1: BIG EDDY-OSTRANDER 500 KV 0.70 -810 0.70 -2047 0.70 -350 0.70 -740 0.73 -4822 0.71 -1857 0.79 -1649 0.70 -925 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.70 -810 0.70 -2032 0.70 -351 0.70 -739 0.72 -4929 0.71 -1833 0.79 -1638 0.70 -925 N-1: BRADY-ANTELOPE 230 KV + RAS 0.70 -806 0.70 -1976 0.70 -349 0.70 -734 0.72 -4915 0.71 -1809 0.79 -1623 0.70 -921 N-1: BROADVIEW-GARRISON #1 500 KV 0.70 -807 0.72 -1920 0.70 -349 0.70 -735 0.76 -4662 0.73 -1762 0.80 -1547 0.70 -922 N-1: BROWNLEE-ONTARIO 230 KV 0.70 -810 0.70 -2016 0.70 -351 0.70 -739 0.72 -4921 0.71 -1824 0.79 -1632 0.70 -925 N-1: BUCKLEY-GRIZZLY 500 KV 0.70 -809 0.70 -2049 0.70 -348 0.70 -740 0.70 -4841 0.71 -1857 0.79 -1650 0.70 -923 N-1: BUCKLEY-MARION 500 KV 0.70 -809 0.70 -2040 0.70 -349 0.70 -740 0.74 -4752 0.71 -1854 0.79 -1648 0.70 -923 N-1: BUCKLEY-SLATT 500 KV 0.70 -807 0.70 -2051 0.70 -349 0.70 -739 0.72 -4774 0.71 -1864 0.79 -1657 0.70 -922 N-1: CAL SUB 120 KV PHASE SHIFTER 0.70 -771 0.70 -2027 0.70 -332 0.70 -742 0.72 -4868 0.71 -1844 0.79 -1640 0.70 -871 N-1: CAPTAIN JACK-OLINDA 500 KV 0.70 -811 0.70 -2060 0.70 -349 0.70 -739 0.72 -4219 0.71 -1877 0.79 -1673 0.70 -926 N-1: CAPTJACK-KFALLS 500 KV 0.70 -809 0.70 -2046 0.70 -349 0.70 -740 0.70 -4756 0.71 -1856 0.79 -1649 0.70 -924 N-1: CASCADE CROSSING 500 KV 0.70 -806 0.70 -2039 0.70 -347 0.70 -738 0.78 -4381 0.71 -1860 0.79 -1656 0.70 -921 N-1: CHIEF JO-COULEE 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4889 0.71 -1857 0.79 -1648 0.70 -925 N-1: CHIEF JO-MONROE 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4911 0.71 -1857 0.79 -1649 0.70 -925 N-1: CHIEF JO-SICKLER 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.75 -4721 0.71 -1860 0.79 -1651 0.70 -925 N-1: COULEE-HANFORD 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4637 0.71 -1858 0.79 -1651 0.70 -925 N-1: COULEE-SCHULTZ 500 KV 0.70 -810 0.70 -2046 0.70 -351 0.70 -740 0.73 -4843 0.71 -1855 0.79 -1648 0.70 -925 N-1: COVINGTON4-RAVER 500 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4913 0.71 -1862 0.79 -1652 0.70 -925 N-1: COVINGTON5-RAVER 500 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4912 0.71 -1861 0.79 -1652 0.70 -925 N-1: COYOTE-LONGHORN 500 KV 0.70 -810 0.70 -2048 0.70 -351 0.70 -741 0.72 -4918 0.71 -1864 0.79 -1657 0.70 -925 N-1: CUSTERW-MONROE 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.75 -4720 0.71 -1860 0.79 -1651 0.70 -925 N-1: DIXONVILLE-MERIDIAN 500 KV 0.70 -809 0.70 -2041 0.70 -348 0.70 -740 0.70 -4762 0.71 -1851 0.79 -1645 0.70 -924 N-1: DRYCREEK-LOLO 230 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4932 0.71 -1861 0.79 -1652 0.70 -925 N-1: DRYCREEK-N LEWISTON 230 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -740 0.72 -4949 0.71 -1861 0.79 -1652 0.70 -925 N-1: DRYCREEK-WALA AVA 230 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.75 -4735 0.71 -1861 0.79 -1652 0.70 -925 N-1: DWORSHAK-HATWAI 500 KV 0.70 -809 0.70 -2009 0.70 -350 0.70 -737 0.75 -4726 0.72 -1817 0.79 -1608 0.70 -923 N-1: DWORSHAK-TAFT 500 KV 0.70 -809 0.70 -2006 0.70 -350 0.70 -737 0.73 -4835 0.72 -1819 0.79 -1614 0.70 -923 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.73 -4884 0.71 -1858 0.79 -1650 0.70 -925 N-1: ECHO LAKE-RAVER 500 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -741 0.72 -4911 0.71 -1861 0.79 -1652 0.70 -925 N-1: ECHO LAKE-SCHULTZ 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4832 0.71 -1857 0.79 -1649 0.70 -925 N-1: ECHO LAKE-SNOK TAP 500 KV 0.70 -810 0.70 -2056 0.70 -352 0.70 -741 0.75 -4733 0.71 -1862 0.79 -1653 0.70 -925 N-1: GARRISON-TAFT #2 500 KV 0.70 -807 0.70 -1962 0.70 -349 0.70 -734 0.74 -4804 0.72 -1781 0.79 -1575 0.70 -921 N-1: GOLDHILL-PLACER 115 KV 0.70 -810 0.70 -2057 0.70 -351 0.70 -741 0.72 -4935 0.71 -1863 0.79 -1654 0.70 -925 N-1: GRASSLAND-COYOTE 500 KV 0.70 -810 0.70 -2014 0.70 -351 0.70 -740 0.72 -4927 0.71 -1846 0.79 -1643 0.70 -925 N-1: GRASSLAND-SLATT 500 KV 0.70 -807 0.70 -2027 0.70 -349 0.70 -739 0.73 -4865 0.71 -1863 0.79 -1662 0.70 -922 Page 557 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: GRIZZLY-JOHN DAY #2 500 KV 0.70 -808 0.70 -2039 0.70 -348 0.70 -739 0.70 -4778 0.71 -1852 0.79 -1646 0.70 -923 N-1: GRIZZLY-MALIN 500 KV 0.70 -806 0.70 -2034 0.70 -344 0.70 -738 0.72 -4546 0.71 -1851 0.79 -1647 0.70 -921 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.70 -810 0.70 -2025 0.70 -351 0.70 -741 0.72 -4733 0.71 -1850 0.79 -1651 0.70 -925 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.70 -806 0.70 -2033 0.70 -344 0.70 -738 0.72 -4560 0.71 -1851 0.79 -1647 0.70 -921 N-1: GRIZZLY-ROUND BU 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.72 -4918 0.71 -1860 0.79 -1651 0.70 -925 N-1: HANFORD-LOW MON 500 KV 0.70 -809 0.70 -2044 0.70 -351 0.70 -740 0.73 -4869 0.71 -1855 0.79 -1647 0.70 -924 N-1: HANFORD-VANTAGE 500 KV 0.70 -810 0.70 -2050 0.70 -351 0.70 -741 0.73 -4813 0.71 -1859 0.79 -1651 0.70 -925 N-1: HANFORD-WAUTOMA 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.72 -4911 0.71 -1860 0.79 -1651 0.70 -925 N-1: HARRY ALLEN 345 KV PHASE SHIFTER 0.70 -800 0.71 -1734 0.70 -347 0.70 -699 0.74 -4648 0.75 -1572 0.81 -1408 0.70 -912 N-1: HATWAI 500/230 KV XFMR 0.70 -810 0.70 -2056 0.70 -351 0.70 -740 0.72 -4926 0.71 -1862 0.79 -1653 0.70 -925 N-1: HATWAI-LOLO 230 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.72 -4947 0.71 -1861 0.79 -1652 0.70 -925 N-1: HATWAI-LOW GRAN 500 KV 0.70 -807 0.70 -1999 0.70 -349 0.70 -736 0.73 -4865 0.72 -1819 0.79 -1613 0.70 -921 N-1: HATWAI-N LEWISTON 230 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4951 0.71 -1862 0.79 -1652 0.70 -925 N-1: HELLS CANYON-BROWNLEE 230 KV 0.70 -808 0.70 -1971 0.70 -350 0.70 -739 0.72 -4970 0.72 -1813 0.79 -1627 0.70 -923 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.70 -804 0.70 -1941 0.70 -347 0.70 -733 0.73 -4857 0.71 -1806 0.79 -1626 0.70 -919 N-1: HEMINGWAY-GRASSLAND 500 KV 0.70 -769 0.70 -1383 0.70 -321 0.70 -701 0.76 -4432 0.72 -1519 0.81 -1563 0.70 -881 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.70 -770 0.70 -1622 0.70 -329 0.70 -709 0.76 -4545 0.71 -1713 0.80 -1703 0.70 -882 N-1: HILL TOP 345/230 XFMR 0.70 -796 0.70 -1963 0.70 -232 0.70 -749 0.73 -4809 0.72 -1795 0.79 -1598 0.70 -913 N-1: HORSE HV-MCNARY 230 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.75 -4730 0.71 -1861 0.79 -1652 0.70 -925 N-1: HOT SPRINGS-TAFT 500 KV 0.70 -810 0.70 -2050 0.70 -351 0.70 -740 0.75 -4731 0.71 -1857 0.79 -1648 0.70 -925 N-1: HUMBOLDT-COYOTE CK 345 KV 0.70 -810 0.70 -1967 0.70 -356 0.70 -236 0.72 -4886 0.72 -1736 0.80 -1632 0.70 -912 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.70 -800 0.71 -1750 0.70 -346 0.70 -706 0.74 -4674 0.74 -1592 0.81 -1435 0.70 -914 N-1: ING500-CUSTERW 500 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.72 -4917 0.71 -1861 0.79 -1652 0.70 -925 N-1: JOHN DAY-MARION 500 KV 0.70 -809 0.70 -2040 0.70 -349 0.70 -740 0.74 -4759 0.71 -1853 0.79 -1647 0.70 -924 N-1: JOHN DAY-ROCK CK 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.73 -4844 0.71 -1859 0.79 -1651 0.70 -925 N-1: JOHN DAY-SLATT 500 KV 0.70 -808 0.70 -2051 0.70 -350 0.70 -739 0.73 -4865 0.71 -1865 0.79 -1659 0.70 -923 N-1: KFALLS-MERIDIAN 500 KV 0.70 -809 0.70 -2023 0.70 -348 0.70 -741 0.71 -4806 0.72 -1836 0.79 -1632 0.70 -924 N-1: KNIGHT-WAUTOMA 500 KV 0.70 -809 0.70 -2046 0.70 -350 0.70 -740 0.74 -4817 0.71 -1856 0.79 -1648 0.70 -924 N-1: LAGRANDE-NORTH POWDER 230 KV 0.70 -807 0.70 -2007 0.70 -349 0.70 -737 0.75 -4699 0.71 -1841 0.79 -1642 0.70 -921 N-1: LANES-MARION 500 KV 0.70 -809 0.70 -2048 0.70 -350 0.70 -740 0.73 -4829 0.71 -1857 0.79 -1650 0.70 -924 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.72 -4923 0.71 -1860 0.79 -1651 0.70 -925 N-1: LIT GOOSE-LOW MON 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.72 -4922 0.71 -1859 0.79 -1651 0.70 -925 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.72 -4922 0.71 -1859 0.79 -1650 0.70 -925 N-1: LOW MON-SAC TAP 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -741 0.75 -4715 0.71 -1861 0.79 -1652 0.70 -925 N-1: MALIN 500/230 XFMR 0.70 -789 0.70 -2052 0.70 -249 0.70 -742 0.71 -4931 0.71 -1859 0.79 -1650 0.70 -905 N-1: MALIN-HILLTOP 230 KV 0.70 -786 0.70 -1997 0.70 -181 0.70 -750 0.72 -4844 0.72 -1820 0.79 -1618 0.70 -904 N-1: MALIN-ROUND MTN #1 500 KV 0.70 -810 0.70 -2052 0.70 -348 0.70 -739 0.72 -4479 0.71 -1866 0.79 -1660 0.70 -924 N-1: MALIN-ROUND MTN #2 500 KV 0.70 -810 0.70 -2051 0.70 -348 0.70 -739 0.72 -4458 0.71 -1866 0.79 -1660 0.70 -924 N-1: MALIN-SUMMER LAKE 500 KV 0.70 -803 0.70 -2020 0.70 -347 0.70 -737 0.71 -4645 0.71 -1872 0.79 -1684 0.70 -917 N-1: MAPLE VLY-ROCKY RH 345 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.75 -4723 0.71 -1861 0.79 -1652 0.70 -925 N-1: MARION-PEARL 500 KV 0.70 -812 0.70 -2050 0.70 -353 0.70 -741 0.73 -4802 0.71 -1858 0.79 -1650 0.70 -927 N-1: MARION-SANTIAM 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -741 0.75 -4747 0.71 -1860 0.79 -1651 0.70 -925 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.70 -810 0.70 -2056 0.70 -352 0.70 -741 0.72 -4977 0.71 -1861 0.79 -1652 0.70 -925 N-1: MCNARY 500/230 KV XFMR 0.70 -810 0.70 -2041 0.70 -352 0.70 -740 0.78 -4681 0.71 -1855 0.79 -1649 0.70 -925 N-1: MCNARY-BOARD T1 230 KV 0.70 -811 0.70 -2067 0.70 -352 0.70 -741 0.72 -4942 0.71 -1872 0.79 -1663 0.70 -926 N-1: MCNARY-JOHN DAY 500 KV 0.70 -808 0.70 -2043 0.70 -350 0.70 -739 0.73 -4798 0.71 -1857 0.79 -1650 0.70 -923 N-1: MCNARY-LONGHORN 500 KV 0.70 -811 0.70 -2039 0.70 -352 0.70 -741 0.72 -4905 0.71 -1858 0.79 -1651 0.70 -925 N-1: MCNARY-ROSS 345 KV 0.70 -809 0.70 -2047 0.70 -350 0.70 -740 0.73 -4827 0.71 -1857 0.79 -1649 0.70 -924 N-1: MCNARY-ROUNDUP 230 KV 0.70 -808 0.70 -2017 0.70 -350 0.70 -738 0.72 -4938 0.71 -1844 0.79 -1645 0.70 -923 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.76 -4627 0.71 -1859 0.79 -1651 0.70 -925 N-1: MIDPOINT-HEMINGWAY 500 KV 0.70 -780 0.70 -1560 0.70 -334 0.70 -706 0.76 -4625 0.70 -1384 0.78 -1449 0.70 -892 N-1: MIDPOINT-HUMBOLDT 345 KV 0.70 -820 0.70 -1921 0.70 -361 0.70 -476 0.73 -4854 0.72 -1710 0.80 -1603 0.70 -926 Page 558 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: NAPAVINE-PAUL 500 KV 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4925 0.71 -1862 0.79 -1652 0.70 -925 N-1: OLYMPIA-PAUL 500 KV 0.70 -810 0.70 -2057 0.70 -352 0.70 -741 0.72 -4973 0.71 -1861 0.79 -1652 0.70 -925 N-1: ONTARIO-CALDWELL 230 KV 0.70 -810 0.70 -2046 0.70 -351 0.70 -740 0.72 -4932 0.71 -1851 0.79 -1647 0.70 -925 N-1: OSTRANDER-KNIGHT 500 KV 0.70 -809 0.70 -2044 0.70 -350 0.70 -740 0.74 -4798 0.71 -1855 0.79 -1648 0.70 -924 N-1: OSTRANDER-PEARL 500 KV 0.70 -810 0.70 -2058 0.70 -351 0.70 -741 0.75 -4732 0.71 -1862 0.79 -1653 0.70 -925 N-1: OSTRANDER-TROUTDALE 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.73 -4888 0.71 -1860 0.79 -1651 0.70 -925 N-1: OXBOW-BROWNLEE #2 230 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.72 -4932 0.71 -1859 0.79 -1652 0.70 -925 N-1: OXBOW-LOLO 230 KV 0.70 -806 0.70 -1993 0.70 -348 0.70 -736 0.73 -4877 0.71 -1836 0.79 -1640 0.70 -921 N-1: PAUL-SATSOP 500 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.73 -4883 0.71 -1860 0.79 -1652 0.70 -925 N-1: PEARL-KEELER 500 KV 0.70 -811 0.70 -2058 0.70 -352 0.70 -741 0.73 -4855 0.71 -1863 0.79 -1654 0.70 -926 N-1: PINTO-FOUR CORNER 345 KV 0.70 -801 0.70 -1774 0.70 -347 0.70 -709 0.76 -4533 0.74 -1614 0.81 -1453 0.70 -915 N-1: PONDEROSA A 500/230 KV XFMR 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4928 0.71 -1862 0.79 -1653 0.70 -925 N-1: PONDEROSA B 500/230 KV XFMR 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.72 -4951 0.71 -1860 0.79 -1651 0.70 -925 N-1: POPULUS-CEDAR HILL-HEMINGWAY 500 KV 0.70 -794 0.70 -1715 0.70 -344 0.70 -709 0.72 -5037 0.72 -1429 0.80 -1270 0.70 -907 N-1: RAVER-PAUL 500 KV 0.70 -811 0.70 -2056 0.70 -352 0.70 -741 0.73 -4894 0.71 -1861 0.79 -1652 0.70 -926 N-1: RAVER-TACOMA 500 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.73 -4893 0.71 -1861 0.79 -1652 0.70 -925 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.70 -801 0.71 -1735 0.70 -347 0.70 -702 0.74 -4648 0.75 -1573 0.81 -1409 0.70 -914 N-1: ROBINSON-HARRY ALLEN 500 KV 0.70 -741 0.70 -1970 0.70 -307 0.70 -725 0.73 -4715 0.71 -1818 0.79 -1634 0.70 -850 N-1: ROCK CK-WAUTOMA 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4831 0.71 -1858 0.79 -1650 0.70 -925 N-1: ROUND MTN-TABLE MTN 500 KV 0.70 -811 0.70 -2060 0.70 -351 0.70 -740 0.72 -4715 0.71 -1868 0.79 -1660 0.70 -925 N-1: ROUNDUP-LAGRANDE 230 KV 0.70 -807 0.70 -2012 0.70 -349 0.70 -737 0.72 -4906 0.71 -1842 0.79 -1643 0.70 -922 N-1: SCHULTZ-SICKLER 500 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.72 -4906 0.71 -1861 0.79 -1652 0.70 -925 N-1: SCHULTZ-VANTAGE 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.73 -4876 0.71 -1860 0.79 -1651 0.70 -925 N-1: SCHULTZ-WAUTOMA 500 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -741 0.76 -4616 0.71 -1860 0.79 -1652 0.70 -925 N-1: SIGURD-GLEN CANYON 230 KV 0.70 -807 0.70 -1993 0.70 -350 0.70 -732 0.75 -4704 0.72 -1807 0.79 -1607 0.70 -922 N-1: SLATT 500/230 KV XFMR 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.72 -4904 0.71 -1859 0.79 -1651 0.70 -925 N-1: SLATT-LONGHORN 500 KV 0.70 -810 0.70 -2050 0.70 -351 0.70 -740 0.75 -4701 0.71 -1860 0.79 -1651 0.70 -924 N-1: SNOK TAP-SNOKING 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.72 -4899 0.71 -1859 0.79 -1650 0.70 -925 N-1: TABLE MTN-TESLA 500 KV 0.70 -812 0.70 -2069 0.70 -353 0.70 -740 0.72 -4797 0.71 -1875 0.79 -1666 0.70 -927 N-1: TABLE MTN-VACA DIXON 500 KV 0.70 -813 0.70 -2077 0.70 -353 0.70 -740 0.72 -4681 0.71 -1884 0.79 -1675 0.70 -928 N-1: VANTAGE 500/230 KV XFMR #1 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4932 0.71 -1862 0.79 -1652 0.70 -925 N-1: VANTAGE 500/230 KV XFMR #2 0.70 -810 0.70 -2056 0.70 -351 0.70 -741 0.72 -4949 0.71 -1862 0.79 -1652 0.70 -925 N-1: WALLA WALLA-TALBOT 230 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.72 -4931 0.71 -1861 0.79 -1651 0.70 -925 N-1: WALLA WALLA-WALLULA 230 KV 0.70 -810 0.70 -2045 0.70 -351 0.70 -740 0.72 -4942 0.71 -1856 0.79 -1650 0.70 -925 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.70 -808 0.70 -2021 0.70 -348 0.70 -739 0.75 -4599 0.71 -1845 0.79 -1641 0.70 -923 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.70 -806 0.70 -2023 0.70 -345 0.70 -738 0.78 -4268 0.71 -1845 0.79 -1642 0.70 -921 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.70 -805 0.70 -2034 0.70 -345 0.70 -737 0.74 -4530 0.71 -1855 0.79 -1651 0.70 -919 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.70 -807 0.70 -2033 0.70 -348 0.70 -738 0.76 -4469 0.71 -1850 0.79 -1645 0.70 -922 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.70 -806 0.70 -2033 0.70 -346 0.70 -738 0.75 -4637 0.71 -1857 0.79 -1653 0.70 -921 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.70 -808 0.70 -2027 0.70 -349 0.70 -739 0.75 -4667 0.71 -1850 0.79 -1646 0.70 -923 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.70 -809 0.70 -2034 0.70 -350 0.70 -740 0.74 -4759 0.71 -1853 0.79 -1648 0.70 -924 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.70 -790 0.72 -1653 0.70 -336 0.70 -722 0.79 -4284 0.76 -1515 0.80 -1335 0.70 -903 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-ROUND BUTTE 230 KV 0.70 -807 0.70 -2041 0.70 -347 0.70 -739 0.78 -4359 0.71 -1860 0.79 -1657 0.70 -921 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-SANTIAM 230 KV 0.70 -806 0.70 -2042 0.70 -347 0.70 -739 0.78 -4385 0.71 -1861 0.79 -1657 0.70 -921 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.70 -810 0.70 -2044 0.70 -350 0.70 -740 0.74 -4790 0.71 -1855 0.79 -1648 0.70 -924 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.70 -810 0.70 -2045 0.70 -350 0.70 -740 0.74 -4789 0.71 -1856 0.79 -1648 0.70 -924 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.70 -810 0.70 -1964 0.70 -351 0.70 -736 0.72 -4918 0.72 -1759 0.80 -1604 0.70 -925 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.70 -810 0.70 -1963 0.70 -351 0.70 -736 0.72 -4937 0.72 -1756 0.80 -1604 0.70 -925 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.70 -811 0.73 -1714 0.70 -352 0.70 -733 0.72 -4916 0.77 -1483 0.83 -1062 0.70 -926 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.70 -810 0.73 -1645 0.70 -351 0.70 -728 0.75 -4714 0.78 -1435 0.83 -1012 0.70 -925 N-2: BROADVIEW-GARRISON #1 & #2 500 KV + RAS 0.70 -793 0.86 -1283 0.70 -338 0.70 -726 0.78 -4561 0.85 -1265 0.86 -1173 0.70 -906 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.70 -802 0.70 -1870 0.70 -346 0.70 -732 0.72 -4882 0.72 -1766 0.79 -1609 0.70 -917 Page 559 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.70 -808 0.70 -1967 0.70 -350 0.70 -739 0.72 -4971 0.72 -1810 0.79 -1626 0.70 -923 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.70 -807 0.70 -2023 0.70 -346 0.70 -739 0.78 -4289 0.71 -1845 0.79 -1643 0.70 -922 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.70 -810 0.70 -2043 0.70 -351 0.70 -740 0.74 -4792 0.71 -1853 0.79 -1646 0.70 -925 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.70 -810 0.70 -2045 0.70 -351 0.70 -740 0.74 -4798 0.71 -1855 0.79 -1647 0.70 -925 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.70 -810 0.70 -2048 0.70 -351 0.70 -740 0.76 -4644 0.71 -1856 0.79 -1648 0.70 -925 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.70 -810 0.70 -2050 0.70 -351 0.70 -740 0.73 -4867 0.71 -1858 0.79 -1650 0.70 -925 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.70 -810 0.70 -2047 0.70 -351 0.70 -740 0.73 -4851 0.71 -1855 0.79 -1647 0.70 -925 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.70 -810 0.70 -2042 0.70 -351 0.70 -741 0.75 -4656 0.71 -1855 0.79 -1650 0.70 -925 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.70 -809 0.70 -2029 0.70 -350 0.70 -739 0.75 -4718 0.71 -1843 0.79 -1638 0.70 -924 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.73 -4877 0.71 -1860 0.79 -1651 0.70 -925 N-2: CUSTERW-MONROE #1 & #2 500 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.74 -4822 0.71 -1858 0.79 -1649 0.70 -925 N-2: DC-BIPOLE 0.70 -828 0.70 -2294 0.70 -367 0.70 -735 0.70 -5048 0.70 -2049 0.77 -1842 0.70 -943 N-2: DOUBLE PALO VERDE 0.70 -835 0.70 -2270 0.70 -367 0.70 -734 0.73 -4615 0.70 -2039 0.78 -1787 0.70 -950 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.70 -810 0.70 -2051 0.70 -351 0.70 -740 0.73 -4882 0.71 -1858 0.79 -1650 0.70 -925 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4839 0.71 -1857 0.79 -1649 0.70 -925 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.70 -791 0.73 -1649 0.70 -337 0.70 -721 0.77 -4491 0.76 -1506 0.81 -1318 0.70 -904 N-2: GRASSLAND-CEDAR SPRING & SLATT - BUCKLEY 500 KV 0.70 -803 0.70 -2044 0.70 -345 0.70 -736 0.75 -4524 0.71 -1869 0.79 -1666 0.70 -918 N-2: GRASSLAND-COYOTE & SLATT - LONGHORN 500 KV 0.70 -809 0.70 -1971 0.70 -350 0.70 -738 0.73 -4804 0.71 -1825 0.79 -1628 0.70 -924 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV 0.70 -800 0.70 -2015 0.70 -336 0.70 -735 0.70 -4241 0.71 -1845 0.79 -1647 0.70 -915 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV 0.70 -806 0.70 -2000 0.70 -343 0.70 -739 0.70 -4415 0.71 -1836 0.79 -1642 0.70 -921 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV 0.70 -794 0.70 -2010 0.70 -337 0.70 -732 0.70 -4232 0.70 -1879 0.79 -1702 0.70 -908 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.70 -806 0.70 -2000 0.70 -347 0.70 -737 0.80 -4121 0.71 -1835 0.79 -1635 0.70 -921 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.70 -809 0.70 -2045 0.70 -351 0.70 -739 0.73 -4862 0.71 -1855 0.79 -1648 0.70 -924 N-2: HELLS CANYON-BROWNLEE & OXBOW-LOLO 230 KV 0.70 -804 0.70 -1890 0.70 -347 0.70 -733 0.73 -4861 0.72 -1783 0.79 -1628 0.70 -918 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.70 -810 0.70 -2041 0.70 -350 0.70 -741 0.78 -4363 0.71 -1853 0.79 -1648 0.70 -925 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.70 -809 0.70 -2036 0.70 -349 0.70 -739 0.77 -4490 0.71 -1851 0.79 -1646 0.70 -924 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV 0.70 -805 0.70 -2015 0.70 -342 0.70 -737 0.70 -4331 0.71 -1838 0.79 -1638 0.70 -920 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV 0.70 -806 0.70 -2031 0.70 -343 0.70 -738 0.70 -4505 0.71 -1847 0.79 -1643 0.70 -921 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.70 -807 0.70 -2023 0.70 -346 0.70 -739 0.78 -4289 0.71 -1845 0.79 -1643 0.70 -922 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.70 -810 0.70 -2033 0.70 -350 0.70 -740 0.75 -4616 0.71 -1848 0.79 -1644 0.70 -925 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.70 -809 0.70 -2041 0.70 -349 0.70 -739 0.74 -4731 0.71 -1855 0.79 -1648 0.70 -924 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.70 -811 0.70 -2059 0.70 -352 0.70 -741 0.73 -4835 0.71 -1865 0.79 -1656 0.70 -926 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.70 -808 0.70 -2031 0.70 -348 0.70 -739 0.77 -4409 0.71 -1847 0.79 -1643 0.70 -923 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.70 -808 0.70 -2034 0.70 -349 0.70 -739 0.77 -4431 0.71 -1850 0.79 -1645 0.70 -923 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.70 -809 0.70 -2045 0.70 -350 0.70 -740 0.74 -4769 0.71 -1856 0.79 -1649 0.70 -924 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.70 -806 0.70 -1990 0.70 -348 0.70 -735 0.74 -4789 0.72 -1813 0.79 -1607 0.70 -921 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.70 -815 0.70 -2096 0.70 -350 0.70 -734 0.71 -3165 0.70 -1929 0.79 -1735 0.70 -929 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.70 -808 0.70 -2036 0.70 -349 0.70 -738 0.74 -4690 0.71 -1854 0.79 -1648 0.70 -923 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.70 -808 0.70 -2040 0.70 -349 0.70 -738 0.74 -4779 0.71 -1856 0.79 -1649 0.70 -923 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.70 -807 0.70 -2032 0.70 -348 0.70 -738 0.75 -4659 0.71 -1852 0.79 -1647 0.70 -922 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.70 -809 0.70 -2044 0.70 -350 0.70 -739 0.74 -4799 0.71 -1857 0.79 -1649 0.70 -924 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.70 -779 0.70 -1553 0.70 -333 0.70 -704 0.76 -4620 0.70 -1362 0.78 -1427 0.70 -891 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.70 -810 0.70 -2046 0.70 -351 0.70 -740 0.74 -4768 0.71 -1855 0.79 -1647 0.70 -925 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV 0.70 -808 0.70 -2030 0.70 -349 0.70 -738 0.81 -4228 0.71 -1845 0.79 -1639 0.70 -923 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV 0.70 -809 0.70 -2047 0.70 -350 0.70 -740 0.74 -4802 0.71 -1857 0.79 -1648 0.70 -924 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.70 -811 0.70 -2055 0.70 -352 0.70 -741 0.73 -4864 0.71 -1861 0.79 -1652 0.70 -926 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV 0.70 -811 0.70 -2059 0.70 -352 0.70 -741 0.73 -4855 0.71 -1864 0.79 -1654 0.70 -926 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -740 0.75 -4696 0.71 -1861 0.79 -1652 0.70 -925 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.70 -810 0.70 -2058 0.70 -351 0.70 -741 0.75 -4701 0.71 -1862 0.79 -1652 0.70 -925 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.70 -810 0.70 -2055 0.70 -351 0.70 -741 0.73 -4887 0.71 -1861 0.79 -1651 0.70 -925 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4869 0.71 -1859 0.79 -1651 0.70 -925 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.70 -811 0.70 -2055 0.70 -352 0.70 -741 0.73 -4878 0.71 -1861 0.79 -1652 0.70 -926 Page 560 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hill top Humboldt Malin Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -741 0.76 -4659 0.71 -1859 0.79 -1651 0.70 -925 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.70 -811 0.70 -2059 0.70 -352 0.70 -741 0.73 -4894 0.71 -1864 0.79 -1655 0.70 -926 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.70 -809 0.70 -2038 0.70 -350 0.70 -740 0.75 -4683 0.71 -1851 0.79 -1644 0.70 -924 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.70 -810 0.70 -2053 0.70 -351 0.70 -740 0.73 -4870 0.71 -1859 0.79 -1650 0.70 -925 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.70 -810 0.70 -2054 0.70 -351 0.70 -740 0.73 -4887 0.71 -1860 0.79 -1651 0.70 -925 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV 0.70 -820 0.70 -2142 0.70 -361 0.70 -736 0.71 -3798 0.70 -1953 0.78 -1750 0.70 -933 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV 0.70 -810 0.70 -2048 0.70 -351 0.70 -741 0.75 -4662 0.71 -1859 0.79 -1651 0.70 -925 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV 0.70 -810 0.70 -2052 0.70 -351 0.70 -740 0.73 -4865 0.71 -1860 0.79 -1651 0.70 -925 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.70 -822 0.70 -2154 0.70 -361 0.70 -738 0.71 -4251 0.70 -1956 0.78 -1749 0.70 -937 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.70 -802 0.70 -1873 0.70 -345 0.70 -729 0.80 -4217 0.73 -1720 0.79 -1525 0.70 -916 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV + RAS 0.70 -799 0.70 -1804 0.70 -342 0.70 -726 0.81 -4070 0.74 -1664 0.80 -1472 0.70 -913 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.70 -802 0.70 -1874 0.70 -345 0.70 -729 0.80 -4222 0.73 -1721 0.79 -1525 0.70 -916 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV + RAS 0.70 -801 0.70 -1839 0.70 -344 0.70 -728 0.80 -4147 0.73 -1695 0.79 -1502 0.70 -915 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.70 -805 0.70 -1903 0.70 -347 0.70 -731 0.75 -4718 0.73 -1730 0.79 -1527 0.70 -919 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4807 0.71 -1858 0.79 -1651 0.70 -925 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.70 -810 0.70 -2049 0.70 -351 0.70 -740 0.73 -4810 0.71 -1858 0.79 -1651 0.70 -925 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.70 -809 0.70 -2037 0.70 -350 0.70 -740 0.77 -4444 0.71 -1850 0.79 -1643 0.70 -924 Page 561 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt HOT SPR_500.0 (40553) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt HOT SPR_500.0 (40553) #s BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 Page 562 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOKING_500.0 (41007) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 109.8 MVR BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) Page 563 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 Page 564 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BYPASS SeriesCap MIDPOINT_500.0 (60240) TO MIDHEM11_500.0 (61988) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 Bus: Alvey 500 kV OPEN Bus ALVEY_500.0 (40051) Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV OPEN Bus KEELER_500.0 (40601) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Page 565 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV + RAS OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Brady-Antelope 230 kV + RAS OPEN Bus MLCK PHA_230.0 (62355) N-1: Brady-Antelope 230 kV + RAS OPEN Shunt AMPS_ 69.0 (65026) #1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Broadview-Garrison #1 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Cal Sub 120 kV Phase Shifter OPEN Transformer CAL SUB_120.0 (64025) TO CAL S PS_120.0 (64023) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) Page 566 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 2 N-1: Harry Allen 345 kV Phase Shifter OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Hatwai 500/230 kV Xfmr OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Hilltop 230 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 0 MVR N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) Page 567 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Pinto-Four Corner 345 kV OPEN Shunt PINTO_138.0 (66230) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 2_ 13.8 (66228) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 3_ 13.8 (66229) #1 N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine POPULUS_500.0 (67794) TO CEDARHIL_500.0 (60159) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine CEDARHIL_500.0 (60159) TO HEMINWAY_500.0 (60155) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Red Butte-Harry Allen 345 kV OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Red Butte-Harry Allen 345 kV OPEN Shunt GONDER1_230.0 (64205) #v N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 Page 568 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS CLOSE Shunt GARRISON_500.0 (40459) #r N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR1EAST_500.0 (40451) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN1_500.0 (62013) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR2EAST_500.0 (40453) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN2_500.0 (62012) N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT2_ 13.8 (62333) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT1_ 13.8 (62332) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS TAFT_500.0 (41057) TO -186 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS BZ EGALL_ 50.0 (62348) TO 20.4 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS JACKRABB_ 50.0 (62349) TO 19.7 MVR N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) Page 569 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde CLOSE Shunt ROBINSON_345.0 (64885) #b1 N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PINTO_138.0 (66230) TO 64 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS YORKCANY_115.0 (12091) TO 15 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS DURANGO_115.0 (79023) TO 40 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PEIGAN 4_240.0 (54165) TO 0 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Bus IMNAHA_230.0 (60278) N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) Page 570 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 Page 571 of 776 Appendix H - 16la1sa_3400idnw_Path76 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #s N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 572 of 776 Appendix I 16la1sa_3400idnw_nv Base Case (Idaho-Sierra, Path 16) Page 573 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Figure I1: 16la1sa_3400idnw_nv Base Case Pre Contingency 1.08 puMALIN-289.7 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -290.2 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -864.5 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 457.5 Mvar 1.07 puPONDROSA -286.0 Mvar 5 0 8 M W - 2 0 5 M v a r 4 8 3 M W - 2 6 7 M v a r 2 2 M W - 1 5 7 M v a r 154 MW -8 Mvar 47 MW -50 Mvar 45 MW -59 Mvar 1359 MW 130 Mvar 1.03 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.3 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT -87.7 Mvar 1.07 puCEDARHIL-85.3 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 185.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.08 puMARION -467.0 Mvar 3 0 6 M W 4 4 M v a r 8 0 1 M W - 1 3 8 M v a r 287 MW -7 Mvar 288 MW -8 Mvar 491 MW 15 Mvar 730 MW -64 Mvar 94 MW 76 Mvar 405 MW -33 Mvar 614 MW -102 Mvar 1074 MW -259 Mvar 209 MW -157 Mvar 986 MW -61 Mvar 1171 MW -80 Mvar 5 0 0 M W 1 0 M v a r 1172 MW 82 Mvar 559 MW -52 Mvar 442 MW -23 Mvar 274 MW -30 Mvar 284 MW -33 Mvar 147 MW 4 Mvar 1.05 puANTICLIN 617 MW 34 Mvar 616 MW 35 Mvar 452 MW -10 Mvar 447 MW -34 Mvar 258 MW 89 Mvar 559 MW -52 Mvar 205 MW -61 Mvar 374 MW -4 Mvar 625 MW -70 Mvar 234 MW -18 Mvar 285 MW -48 Mvar 308 MW -52 Mvar 1342 MW 158 Mvar 1132 MW -132 Mvar 411 MW -386 Mvar 665 MW -53 Mvar 186 MW -48 Mvar 229 MW -23 Mvar 202 MW -14 Mvar 24 MW 9 Mvar 80 MW -22 Mvar 1 5 2 M W - 6 3 M v a r 103 MW -55 Mvar 341 MW -77 Mvar 181 MW -79 Mvar 171 MW -55 Mvar 180 MW -52 Mvar 181 MW -56 Mvar 4 1 M W 1 0 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.0 Mvar 1.03 puONTARIO 80 MW -22 Mvar 44 MW -19 Mvar 147 MW -37 Mvar 2 7 0 M W - 1 9 M v a r 228 MW -15 Mvar 44 MW 31 Mvar 30 MW 9 Mvar 30 MW 9 Mvar 31 MW 10 Mvar 31 MW 19 Mvar 27 MW 8 Mvar 35 MW 10 Mvar 1 0 5 M W 6 3 M v a r 1 0 5 M W 6 0 M v a r 668 MW -158 Mvar 1109 MW -366 Mvar 576 MW -88 Mvar 419 MW -76 Mvar 307 MW 40 Mvar 285 MW -9 Mvar 254 MW 42 Mvar 239 MW -19 Mvar 235 MW -19 Mvar 360 MW 1 Mvar 369 MW 0 Mvar 611 MW -21 Mvar 7 8 M W 3 M v a r 906 MW -83 Mvar 5 1 0 M W - 6 0 M v a r 4 8 0 M W - 3 2 M v a r 1 1 5 8 M W - 1 9 7 M v a r 1159 MW -298 Mvar ID-NW = 3400 MW Grassland = 1140 MW Summer Lake = 1359 MW Lolo = 270 MW Walla Walla = 363 MW LaGrande = 229 MW Midpoint West = 2247 MW Borah West = 2441 MW Idaho-Sierra = 500 MW N of John Day = 207 MW COI = 2407 MW PDCI = 1100 MW ID-MT = 165 MW W of McNary = 2115 MWW of Slatt = 3108 MW Alturas Project = -255 MW Path C = -322 MW Montana Southeast = -555 MW TOT 2B1 = 560 MW TOT 2C = 596 MW 1335 MW -171 Mvar 396 MW -90 Mvar 138 MW -82 Mvar 32 MW -4 Mvar 210 M W 122 M v a r 3 6 8 M W - 2 6 3 M v a r 1 1 4 0 M W - 2 1 6 M v a r 1180 MW -36 Mvar Page 574 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Figure I2: 16la1sa_3400idnw_nv Base Case after the contingency BF IPC Hemingway-Summer Lake 500 kV & Hemingway 500/230 Xfmr 1.09 puMALIN-292.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -292.2 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -864.4 Mvar 1.09 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 462.7 Mvar 1.08 puPONDROSA -288.4 Mvar 6 1 3 M W - 2 3 9 M v a r 5 6 6 M W - 2 9 9 M v a r 6 1 0 M W - 4 1 M v a r 550 MW -219 Mvar 98 MW 4 Mvar 83 MW 21 Mvar 0 MW 0 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE -286.1 Mvar 1.07 pu GRASSLND 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON -284.9 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.07 puCDR SPRG 1.08 puBUCKLEY 1.01 puLAGRANDE 53.3 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 39.8 Mvar 1.01 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 1.00 puHURICANE 1.01 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 126.2 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY -151.1 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.08 puMIDPOINT -88.1 Mvar 1.08 puCEDARHIL-86.9 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.9 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 0.98 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 221.1 Mvar 221.1 Mvar -286.0 Mvar 1.08 puMARION -463.1 Mvar 5 6 3 M W - 2 6 M v a r 1 0 4 3 M W - 1 8 3 M v a r 562 MW -65 Mvar 563 MW -66 Mvar 475 MW 4 Mvar 800 MW -76 Mvar 59 MW -180 Mvar 558 MW -93 Mvar 717 MW -100 Mvar 1443 MW -406 Mvar 159 MW -94 Mvar 816 MW -48 Mvar 1028 MW -131 Mvar 5 8 9 M W 3 6 M v a r 1028 MW 8 Mvar 471 MW -52 Mvar 356 MW -69 Mvar 233 MW -12 Mvar 241 MW -14 Mvar 237 MW 59 Mvar 1.05 puANTICLIN 602 MW 28 Mvar 601 MW 28 Mvar 396 MW 11 Mvar 393 MW -9 Mvar 246 MW 112 Mvar 471 MW -52 Mvar 174 MW -67 Mvar 366 MW 0 Mvar 621 MW -64 Mvar 197 MW -21 Mvar 243 MW -32 Mvar 264 MW -36 Mvar 1286 MW 139 Mvar 1082 MW -109 Mvar 485 MW -382 Mvar 793 MW -95 Mvar 255 MW -60 Mvar 302 MW -66 Mvar 276 MW -44 Mvar 18 MW 7 Mvar 86 MW -23 Mvar 2 1 9 M W - 9 0 M v a r 151 MW -73 Mvar 424 MW -128 Mvar 204 MW -91 Mvar 194 MW -67 Mvar 203 MW -63 Mvar 204 MW -68 Mvar 1 3 8 M W - 4 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -78.8 Mvar 1.03 puONTARIO 86 MW -23 Mvar 59 MW -31 Mvar 204 MW -70 Mvar 3 5 4 M W - 1 6 M v a r 303 MW -4 Mvar 22 MW -34 Mvar 18 MW -11 Mvar 18 MW -11 Mvar 18 MW -12 Mvar 20 MW -24 Mvar 64 MW 17 Mvar 82 MW 23 Mvar 1 0 2 M W 5 0 M v a r 1 0 2 M W 4 8 M v a r 797 MW -168 Mvar 1120 MW -374 Mvar 616 MW -106 Mvar 475 MW -92 Mvar 342 MW 28 Mvar 317 MW -18 Mvar 285 MW 30 Mvar 273 MW -34 Mvar 268 MW -33 Mvar 409 MW -19 Mvar 418 MW -20 Mvar 709 MW -69 Mvar 1 5 1 M W - 3 4 M v a r 1142 MW -198 Mvar 5 7 2 M W - 8 9 M v a r 5 6 2 M W - 6 6 M v a r 5 4 9 M W - 1 4 8 M v a r 549 MW -191 Mvar ID-NW = 2896 MW Grassland = 1735 MW Summer Lake = 0 MW Lolo = 354 MW Walla Walla = 455 MW LaGrande = 302 MW Midpoint West = 1810 MW Borah West = 2094 MW Idaho-Sierra = 589 MW N of John Day = 440 MW COI = 2097 MW PDCI = 1100 MW ID-MT = 217 MW W of McNary = 2230 MWW of Slatt = 3787 MW Alturas Project = -285 MW Path C = -531 MW Montana Southeast = -604 MW TOT 2B1 = 610 MW TOT 2C = 669 MW 0 MW 0 Mvar 0 MW 0 Mvar 134 MW -87 Mvar 32 MW -9 Mvar 204 M W 96 M v a r 4 0 5 M W - 2 5 9 M v a r 1 7 3 5 M W - 7 9 9 M v a r 1833 MW 544 Mvar Page 575 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Figure I3: 16la1sa_3400idnw_nv Base Case after the contingency N-2: Double Palo Verde 1.06 puMALIN-281.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar -281.6 Mvar 1.07 puPONDROSB 1.07 puGRIZZLY -847.8 Mvar 1.06 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 460.6 Mvar 1.06 puPONDROSA -280.2 Mvar 8 1 5 M W - 1 7 8 M v a r 7 9 3 M W - 2 3 5 M v a r 2 8 3 M W 1 4 9 M v a r 159 MW 1 Mvar 35 MW 50 Mvar 27 MW 60 Mvar 1351 MW 176 Mvar 1.03 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -288.1 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -287.9 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.04 puQUARTZ 1.04 puBROWNLEE 0.0 Mvar 129.3 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -152.9 Mvar 1.08 puLIT GOOS 1.04 puOXBOW 1.08 puMIDPOINT -87.7 Mvar 1.07 puCEDARHIL-85.9 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.2 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 0.98 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.3 Mvar 220.3 Mvar -288.1 Mvar 1.08 puMARION -462.7 Mvar 5 3 9 M W 7 8 M v a r 9 7 5 M W - 8 8 M v a r 621 MW 34 Mvar 622 MW 33 Mvar 431 MW 11 Mvar 723 MW -56 Mvar 204 MW 53 Mvar 295 MW -5 Mvar 657 MW -82 Mvar 1022 MW -193 Mvar 362 MW -166 Mvar 862 MW -59 Mvar 1080 MW -124 Mvar 6 0 1 M W 3 0 M v a r 1081 MW 23 Mvar 501 MW -51 Mvar 373 MW -64 Mvar 250 MW -16 Mvar 259 MW -19 Mvar 262 MW 22 Mvar 1.05 puANTICLIN 633 MW 38 Mvar 632 MW 38 Mvar 397 MW -2 Mvar 393 MW -23 Mvar 201 MW 93 Mvar 501 MW -51 Mvar 230 MW -58 Mvar 366 MW -6 Mvar 630 MW -77 Mvar 220 MW -17 Mvar 259 MW -36 Mvar 280 MW -39 Mvar 1366 MW 153 Mvar 1188 MW -159 Mvar 459 MW -368 Mvar 734 MW -45 Mvar 168 MW -39 Mvar 210 MW -19 Mvar 183 MW -13 Mvar 39 MW 6 Mvar 66 MW -18 Mvar 1 3 5 M W - 5 0 M v a r 114 MW -46 Mvar 311 MW -63 Mvar 187 MW -76 Mvar 176 MW -51 Mvar 185 MW -48 Mvar 186 MW -52 Mvar 7 M W 1 5 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.1 Mvar 1.04 puONTARIO 66 MW -18 Mvar 37 MW -15 Mvar 116 MW -21 Mvar 2 2 6 M W - 1 8 M v a r 213 MW -19 Mvar 63 MW 31 Mvar 52 MW 8 Mvar 52 MW 8 Mvar 54 MW 7 Mvar 55 MW 16 Mvar 9 MW 5 Mvar 11 MW 6 Mvar 8 9 M W 6 4 M v a r 8 9 M W 6 2 M v a r 737 MW -135 Mvar 830 MW -365 Mvar 515 MW -77 Mvar 440 MW -70 Mvar 352 MW 39 Mvar 326 MW -8 Mvar 294 MW 41 Mvar 283 MW -19 Mvar 278 MW -19 Mvar 423 MW 2 Mvar 433 MW 1 Mvar 737 MW -16 Mvar 7 5 M W 2 4 M v a r 945 MW -62 Mvar 8 3 0 M W - 4 0 M v a r 7 8 5 M W - 1 2 M v a r 1 4 6 3 M W - 1 1 3 M v a r 1465 MW -258 Mvar ID-NW = 3129 MW Grassland = 971 MW Summer Lake = 1351 MW Lolo = 226 MW Walla Walla = 330 MW LaGrande = 210 MW Midpoint West = 1931 MW Borah West = 2221 MW Idaho-Sierra = 601 MW N of John Day = 1266 MW COI = 3548 MW PDCI = 1100 MW ID-MT = 106 MW W of McNary = 2337 MWW of Slatt = 3384 MW Alturas Project = -203 MW Path C = -673 MW Montana Southeast = -502 MW TOT 2B1 = 692 MW TOT 2C = 742 MW 1327 MW -123 Mvar 422 MW -102 Mvar 35 MW 75 Mvar 134 MW -6 Mvar 178 M W 125 M v a r 4 4 4 M W - 2 4 6 M v a r 9 7 1 M W - 7 7 M v a r 999 MW -124 Mvar Page 576 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Figure I4: 16la1sa_3400idnw_nv Base Case after the contingency N-1: Huntington-Pinto-Four Corners 345 kV 1.08 puMALIN-287.1 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -287.7 Mvar 1.08 puPONDROSB 1.07 puGRIZZLY -857.3 Mvar 1.07 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 444.9 Mvar 1.07 puPONDROSA -283.1 Mvar 5 4 4 M W - 2 0 1 M v a r 5 2 1 M W - 2 6 4 M v a r 1 1 M W - 1 8 7 M v a r 146 MW -44 Mvar 44 MW -60 Mvar 43 MW -68 Mvar 1425 MW 150 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.04 puMCNRY S1 1.08 puASHE -288.1 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -287.5 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.01 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 1.02 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 127.7 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.02 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -152.7 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.07 puMIDPOINT -85.8 Mvar 1.05 puCEDARHIL-83.4 Mvar 1.07 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.9 Mvar 1.07 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.02 puKINPORT 0.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.3 Mvar 220.3 Mvar -288.1 Mvar 1.08 puMARION -464.7 Mvar 3 3 2 M W 4 9 M v a r 8 2 7 M W - 1 3 4 M v a r 316 MW 8 Mvar 317 MW 7 Mvar 492 MW 8 Mvar 739 MW -67 Mvar 79 MW 102 Mvar 420 MW -45 Mvar 626 MW -96 Mvar 1113 MW -281 Mvar 206 MW -139 Mvar 1055 MW -57 Mvar 1239 MW -17 Mvar 5 2 8 M W 1 3 M v a r 1241 MW 157 Mvar 613 MW -30 Mvar 459 MW -4 Mvar 307 MW -27 Mvar 318 MW -30 Mvar 65 MW -26 Mvar 1.05 puANTICLIN 608 MW 39 Mvar 607 MW 39 Mvar 501 MW -10 Mvar 497 MW -37 Mvar 295 MW 64 Mvar 613 MW -30 Mvar 201 MW -56 Mvar 378 MW -1 Mvar 619 MW -63 Mvar 254 MW -1 Mvar 317 MW -42 Mvar 343 MW -46 Mvar 1328 MW 180 Mvar 1098 MW -103 Mvar 420 MW -382 Mvar 680 MW -54 Mvar 194 MW -53 Mvar 238 MW -26 Mvar 211 MW -15 Mvar 24 MW 9 Mvar 81 MW -22 Mvar 1 6 0 M W - 7 0 M v a r 110 MW -60 Mvar 352 MW -82 Mvar 184 MW -82 Mvar 174 MW -58 Mvar 183 MW -54 Mvar 184 MW -59 Mvar 5 4 M W 6 M v a r HORSEFLT 1.02 puBOISEBCH 0.0 Mvar -78.3 Mvar 1.03 puONTARIO 81 MW -22 Mvar 46 MW -20 Mvar 155 MW -42 Mvar 2 8 1 M W - 1 9 M v a r 237 MW -10 Mvar 38 MW 32 Mvar 23 MW 13 Mvar 23 MW 13 Mvar 24 MW 14 Mvar 24 MW 24 Mvar 32 MW 7 Mvar 41 MW 9 Mvar 1 1 5 M W 6 5 M v a r 1 1 5 M W 6 3 M v a r 683 MW -155 Mvar 1110 MW -367 Mvar 583 MW -90 Mvar 429 MW -78 Mvar 314 MW 38 Mvar 291 MW -10 Mvar 260 MW 40 Mvar 246 MW -22 Mvar 242 MW -21 Mvar 370 MW -2 Mvar 378 MW -3 Mvar 630 MW -30 Mvar 8 8 M W - 1 M v a r 932 MW -97 Mvar 5 5 1 M W - 6 1 M v a r 5 1 7 M W - 3 2 M v a r 1 2 2 7 M W - 2 1 9 M v a r 1229 MW -330 Mvar ID-NW = 3563 MW Grassland = 1203 MW Summer Lake = 1425 MW Lolo = 281 MW Walla Walla = 375 MW LaGrande = 238 MW Midpoint West = 2424 MW Borah West = 2650 MW Idaho-Sierra = 528 MW N of John Day = 242 MW COI = 2578 MW PDCI = 1100 MW ID-MT = 185 MW W of McNary = 2132 MWW of Slatt = 3184 MW Alturas Project = -254 MW Path C = -54 MW Montana Southeast = -570 MW TOT 2B1 = 0 MW TOT 2C = 721 MW 1398 MW -217 Mvar 397 MW -62 Mvar 136 MW -85 Mvar 30 MW -6 Mvar 230 M W 127 M v a r 3 7 4 M W - 2 6 0 M v a r 1 2 0 3 M W - 3 1 3 M v a r 1249 MW -4 Mvar Page 577 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr No Violations BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr No Violations BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV No Violations BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 301.9 300.0 100.6% 370.0 81.6% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 301.9 300.0 100.6% 370.0 81.6% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 300.8 300.0 100.3% 370.0 81.3% BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 300.8 300.0 100.3% 370.0 81.3% BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 186.5 254.1 254.0 100.0% 307.0 82.8% BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV No Violations BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV No Violations BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations Page 578 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 186.5 268.1 254.0 105.5% 307.0 87.3% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4708 Hatwai 500 kV Bus No Violations BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV SLVR PK (64094) -> SLVR PKX (64095) CKT 1 at SLVR PKX Branch MVA 16.6 17.0 17.0 100.2% 23.9 71.3% BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 334.6 300.0 111.5% 370.0 90.4% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 334.6 300.0 111.5% 370.0 90.4% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 321.9 315.0 102.2% 394.0 81.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 321.3 315.0 102.0% 394.0 81.5% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1077.3 999.1 107.8% 1250.1 86.2% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1057.0 1000.1 105.7% 1250.1 84.6% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1267.2 2050.7 2000.1 102.5% 3000.0 68.4% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1300.8 2031.4 2000.1 101.6% 3000.0 67.7% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 333.3 300.0 111.1% 370.0 90.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 333.3 300.0 111.1% 370.0 90.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 321.0 315.0 101.9% 394.0 81.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 320.4 315.0 101.7% 394.0 81.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1070.8 999.1 107.2% 1250.1 85.7% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1050.6 1000.1 105.1% 1250.1 84.0% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1267.2 2046.3 2000.1 102.3% 3000.0 68.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1300.8 2022.1 2000.1 101.1% 3000.0 67.4% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 301.3 300.0 100.4% 370.0 81.4% BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 301.3 300.0 100.4% 370.0 81.4% BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations Page 579 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 186.5 267.8 254.0 105.4% 307.0 87.2% BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 52.0 50.0 104.0% 55.0 94.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 323.6 300.0 107.9% 370.0 87.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 323.6 300.0 107.9% 370.0 87.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.3 113.7 112.0 101.5% 146.7 77.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1173.1 999.1 117.4% 1250.1 93.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1151.2 1000.1 115.1% 1250.1 92.1% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1494.5 2112.0 1732.1 121.9% 2338.3 90.3% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr IMNAHA (60278) -> LOLO (48197) CKT 1 at IMNAHA Branch Amp 667.5 936.7 920.0 101.8% 1046.8 89.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 54.8 50.0 109.6% 55.0 99.7% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 330.0 300.0 110.0% 370.0 89.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 330.0 300.0 110.0% 370.0 89.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 318.5 315.0 101.1% 394.0 80.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 317.9 315.0 100.9% 394.0 80.7% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1135.5 999.1 113.7% 1250.1 90.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1113.0 1000.1 111.3% 1250.1 89.0% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 54.4 50.0 108.8% 55.0 98.9% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 319.3 300.0 106.4% 370.0 86.3% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 319.3 300.0 106.4% 370.0 86.3% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1194.0 999.1 119.5% 1250.1 95.5% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1170.4 1000.1 117.0% 1250.1 93.6% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr IMNAHA (60278) -> LOLO (48197) CKT 1 at IMNAHA Branch Amp 667.5 958.3 920.0 104.2% 1046.8 91.6% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> HURICANE (45103) CKT 1 at HELLSCYN Branch Amp 902.4 1211.4 1199.9 101.0% 1396.0 86.8% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 317.5 300.0 105.8% 370.0 85.8% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 317.5 300.0 105.8% 370.0 85.8% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1093.2 2173.4 1732.1 125.5% 2338.3 93.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1028.3 999.1 102.9% 1250.1 82.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1008.1 1000.1 100.8% 1250.1 80.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 331.8 300.0 110.6% 370.0 89.7% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 331.8 300.0 110.6% 370.0 89.7% Page 580 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 319.6 315.0 101.5% 394.0 81.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 319.0 315.0 101.3% 394.0 81.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.3 114.6 112.0 102.4% 146.7 78.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1110.4 999.1 111.1% 1250.1 88.8% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1089.0 1000.1 108.9% 1250.1 87.1% BF Lolo 230kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1019.8 999.1 102.1% 1250.1 81.6% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 50.8 50.0 101.6% 55.0 92.3% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 325.0 300.0 108.3% 370.0 87.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 325.0 300.0 108.3% 370.0 87.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.3 114.3 112.0 102.0% 146.7 77.9% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1494.5 2174.8 1732.1 125.6% 2338.3 93.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1116.3 999.1 111.7% 1250.1 89.3% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1095.1 1000.1 109.5% 1250.1 87.6% BF PGE Grassland-Coyote 500 kV & Carty Gas Project No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen No Violations Bus: Alvey 500 kV No Violations Bus: Bell BPA 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 300.1 300.0 100.0% 370.0 81.1% Bus: Bell BPA 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 300.1 300.0 100.0% 370.0 81.1% Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 334.6 300.0 111.5% 370.0 90.4% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 334.6 300.0 111.5% 370.0 90.4% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 321.9 315.0 102.2% 394.0 81.7% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 321.3 315.0 102.0% 394.0 81.5% Bus: Summer Lake 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1076.7 999.1 107.8% 1250.1 86.1% Bus: Summer Lake 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1056.5 1000.1 105.6% 1250.1 84.5% Bus: Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1267.2 2049.6 2000.1 102.5% 3000.0 68.3% Bus: Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1300.8 2030.5 2000.1 101.5% 3000.0 67.7% N-1: Allston-Keeler 500 kV No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 300.0 300.0 100.0% 370.0 81.1% N-1: Bell-Taft 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 300.0 300.0 100.0% 370.0 81.1% N-1: Big Eddy-Celilo 500 kV No Violations Page 581 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV + RAS No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Cal Sub 120 kV Phase Shifter No Violations N-1: Captain Jack-Olinda 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 302.9 300.0 101.0% 370.0 81.9% N-1: Captain Jack-Olinda 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 302.9 300.0 101.0% 370.0 81.9% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV No Violations N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV No Violations N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations Page 582 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Hanford-Wautoma 500 kV No Violations N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 348.7 315.0 110.7% 394.0 88.5% N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 347.5 315.0 110.3% 394.0 88.2% N-1: Hatwai 500/230 kV Xfmr No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV No Violations N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV No Violations N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 324.6 300.0 108.2% 370.0 87.7% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 324.6 300.0 108.2% 370.0 87.7% N-1: Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.3 114.7 112.0 102.4% 146.7 78.2% N-1: Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1494.5 2174.0 1732.1 125.5% 2338.3 93.0% N-1: Hemingway-Grassland 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1126.8 999.1 112.8% 1250.1 90.1% N-1: Hemingway-Grassland 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1105.4 1000.1 110.5% 1250.1 88.4% N-1: Hemingway-Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 53.2 50.0 106.5% 55.0 96.8% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 331.0 300.0 110.3% 370.0 89.5% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 331.0 300.0 110.3% 370.0 89.5% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 319.2 315.0 101.3% 394.0 81.0% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 318.7 315.0 101.2% 394.0 80.9% N-1: Hemingway-Summer Lake 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1080.5 999.1 108.1% 1250.1 86.4% N-1: Hemingway-Summer Lake 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 866.3 1058.7 1000.1 105.9% 1250.1 84.7% N-1: Hemingway-Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1267.2 2062.3 2000.1 103.1% 3000.0 68.7% N-1: Hemingway-Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1300.8 2043.2 2000.1 102.2% 3000.0 68.1% N-1: Hill Top 345/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.5 175.5 150.0 117.0% 180.0 97.5% N-1: Hill Top 345/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 319.9 435.3 415.7 104.7% 483.5 90.0% N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV HOT SPR (40553) % Δ Volts 1.079 1.022 5.28% N-1: Humboldt-Coyote Ck 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 310.2 300.0 103.4% 370.0 83.9% N-1: Humboldt-Coyote Ck 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 310.2 300.0 103.4% 370.0 83.9% N-1: Humboldt-Coyote Ck 345 kV SLVR PK (64094) -> SLVR PKX (64095) CKT 1 at SLVR PKX Branch MVA 16.6 19.4 17.0 114.0% 23.9 81.1% N-1: Humboldt-Coyote Ck 345 kV SLVR PS (64096) -> SLVR PK (64094) CKT 1 at SLVR PK Branch MVA 15.9 18.4 17.0 108.5% 23.9 77.1% N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 357.0 300.0 119.0% 370.0 96.5% N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 357.0 300.0 119.0% 370.0 96.5% N-1: Huntington-Pinto-Four Corners 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 296.3 364.2 357.0 102.0% 415.9 87.6% N-1: Huntington-Pinto-Four Corners 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 296.3 364.2 357.0 102.0% 415.9 87.6% N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 52.0 50.0 103.9% 55.0 94.5% N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations Page 583 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.5 150.7 150.0 100.5% 180.0 83.7% N-1: Malin-Round Mtn #1 500 kV No Violations N-1: Malin-Round Mtn #2 500 kV No Violations N-1: Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 304.2 300.0 101.4% 370.0 82.2% N-1: Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 304.2 300.0 101.4% 370.0 82.2% N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 186.5 254.6 254.0 100.3% 307.0 82.9% N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 311.0 300.0 103.7% 370.0 84.1% N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 311.0 300.0 103.7% 370.0 84.1% N-1: Midpoint-Humboldt 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 313.1 300.0 104.4% 370.0 84.6% N-1: Midpoint-Humboldt 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 313.1 300.0 104.4% 370.0 84.6% N-1: Midpoint-Humboldt 345 kV SLVR PK (64094) -> SLVR PKX (64095) CKT 1 at SLVR PKX Branch MVA 16.6 19.8 17.0 116.4% 23.9 82.8% N-1: Midpoint-Humboldt 345 kV SLVR PS (64096) -> SLVR PK (64094) CKT 1 at SLVR PK Branch MVA 15.9 18.8 17.0 110.7% 23.9 78.7% N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 884.5 1020.1 999.1 102.1% 1250.1 81.6% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV No Violations N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 354.4 300.0 118.1% 370.0 95.8% N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 354.4 300.0 118.1% 370.0 95.8% N-1: Pinto-Four Corner 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 296.3 361.2 357.0 101.2% 415.9 86.9% N-1: Pinto-Four Corner 345 kV H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 296.3 361.2 357.0 101.2% 415.9 86.9% N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 314.6 300.0 104.9% 370.0 85.0% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 314.6 300.0 104.9% 370.0 85.0% N-1: Populus-Cedar Hill-Hemingway 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1093.2 1776.5 1732.1 102.6% 2338.3 76.0% Page 584 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 348.7 315.0 110.7% 394.0 88.5% N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 347.5 315.0 110.3% 394.0 88.2% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 301.5 300.0 100.5% 370.0 81.5% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 301.5 300.0 100.5% 370.0 81.5% N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV No Violations N-1: Roundup-Lagrande 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 41.1 50.0 50.0 100.1% 55.0 91.0% N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 316.7 300.0 105.6% 370.0 85.6% N-1: Sigurd-Glen Canyon 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 316.7 300.0 105.6% 370.0 85.6% N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV No Violations N-1: Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 300.1 300.0 100.0% 370.0 81.1% N-1: Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 300.1 300.0 100.0% 370.0 81.1% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS SLVR PK (64094) -> SLVR PKX (64095) CKT 1 at SLVR PKX Branch MVA 16.6 17.0 17.0 100.3% 23.9 71.3% N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV BRIDGER (60085) -> BRI3MI11 (61999) CKT 1 at BRIDGER Branch Amp 1043.6 1703.4 1600.0 106.5% 1840.0 92.6% N-2: Bridger-Populus #1 & #2 345 kV BRI3MI11 (61999) -> 3MIKNOLL (60084) CKT 1 at 3MIKNOLL Branch Amp 1043.6 1678.0 1650.1 101.7% 2227.4 75.3% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> POPBRI11 (61968) CKT 1 at BRIDGER Branch Amp 984.0 1737.5 1492.7 116.4% 1849.2 94.0% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV POPBRI11 (61968) -> POPULUS (67790) CKT 1 at POPULUS Branch Amp 973.2 1719.3 1650.1 104.2% 2227.6 77.2% N-2: Broadview-Garrison #1 & #2 500 kV + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 90.3 126.2 112.0 112.7% 146.7 86.0% N-2: Broadview-Garrison #1 & #2 500 kV + RAS SLVR PK (64094) -> SLVR PKX (64095) CKT 1 at SLVR PKX Branch MVA 16.6 17.3 17.0 101.8% 23.9 72.4% N-2: Broadview-Garrison #1 & #2 500 kV + RAS ABSAROKE (62201) % Δ Volts 0.963 0.911 5.40% Page 585 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLBUSAT (62224) % Δ Volts 0.983 0.933 5.09% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV No Violations N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 326.0 300.0 108.7% 370.0 88.1% N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 326.0 300.0 108.7% 370.0 88.1% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 368.6 300.0 122.9% 370.0 99.6% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 368.6 300.0 122.9% 370.0 99.6% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO Branch MVA 290.3 365.7 315.0 116.1% 394.0 92.8% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO Branch MVA 290.3 364.2 315.0 115.6% 394.0 92.4% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 296.3 377.3 357.0 105.7% 415.9 90.7% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 296.3 377.3 357.0 105.7% 415.9 90.7% N-2: Double Palo Verde CR_NEST1 (54458) -> CBK 500 (50791) CKT 1 at CR_NEST1 Branch Amp 410.4 1151.8 1085.4 106.1% 1199.7 96.0% N-2: Double Palo Verde CHOLLA (14000) -> CHOSAG11 (14014) CKT 1 at CHOSAG11 Branch Amp 972.6 1069.6 1026.0 104.3% 1538.1 69.5% N-2: Double Palo Verde MONTROSE (79049) % Δ Volts 1.024 0.971 5.18% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS SLVR PK (64094) -> SLVR PKX (64095) CKT 1 at SLVR PKX Branch MVA 16.6 17.0 17.0 100.1% 23.9 71.2% N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV No Violations N-2: Grassland-Coyote & Slatt - Longhorn 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 304.3 300.0 101.4% 370.0 82.3% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 304.3 300.0 101.4% 370.0 82.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV No Violations N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 314.8 300.0 104.9% 370.0 85.1% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 314.8 300.0 104.9% 370.0 85.1% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 217.0 253.9 252.0 100.7% 271.1 93.7% N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV No Violations N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV No Violations N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV No Violations Page 586 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV No Violations N-2: Malin-Round Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 327.3 300.0 109.1% 370.0 88.5% N-2: Malin-Round Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 327.3 300.0 109.1% 370.0 88.5% N-2: Malin-Round Mtn #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.5 156.0 150.0 104.0% 180.0 86.7% N-2: Malin-Round Mtn #1 & #2 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.3 316.3 315.0 100.4% 394.0 80.3% N-2: Malin-Round Mtn #1 & #2 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.3 315.8 315.0 100.2% 394.0 80.1% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 310.6 300.0 103.5% 370.0 83.9% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 310.6 300.0 103.5% 370.0 83.9% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 323.9 300.0 108.0% 370.0 87.5% N-2: Round Mtn-Table Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 323.9 300.0 108.0% 370.0 87.5% N-2: Round Mtn-Table Mtn #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 108.5 153.1 150.0 102.1% 180.0 85.1% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 321.1 300.0 107.0% 370.0 86.8% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 321.1 300.0 107.0% 370.0 86.8% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 293.5 300.0 300.0 100.0% 370.0 81.1% N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 293.5 300.0 300.0 100.0% 370.0 81.1% N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations Page 587 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 588 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.70 -802 0.70 -2330 0.70 -349 0.70 -505 0.71 -4430 0.70 -2101 0.70 -817 0.70 -879 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.70 -802 0.70 -2335 0.70 -350 0.70 -503 0.70 -4514 0.70 -2102 0.70 -816 0.70 -878 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.70 -807 0.70 -2376 0.70 -352 0.70 -509 0.71 -4572 0.70 -2131 0.70 -822 0.70 -884 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.70 -805 0.70 -2379 0.70 -351 0.70 -506 0.71 -4500 0.70 -2131 0.70 -819 0.70 -882 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4610 0.70 -2136 0.70 -820 0.70 -885 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.70 -791 0.70 -2385 0.70 -253 0.70 -512 0.70 -4656 0.70 -2135 0.70 -824 0.70 -869 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.70 -806 0.70 -2352 0.70 -354 0.70 -505 0.72 -4619 0.70 -2113 0.70 -817 0.70 -882 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.70 -797 0.70 -2343 0.70 -343 0.70 -498 0.70 -4265 0.70 -2112 0.70 -812 0.70 -873 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.70 -810 0.70 -2405 0.70 -359 0.70 -505 0.72 -4328 0.70 -2146 0.70 -817 0.70 -886 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.70 -798 0.70 -2361 0.70 -343 0.70 -495 0.70 -3955 0.70 -2124 0.70 -809 0.70 -874 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.70 -807 0.70 -2373 0.70 -355 0.70 -506 0.72 -4617 0.70 -2128 0.70 -819 0.70 -883 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.70 -807 0.70 -2372 0.70 -354 0.70 -507 0.73 -4526 0.70 -2131 0.70 -819 0.70 -884 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.70 -806 0.70 -2354 0.70 -355 0.70 -505 0.72 -4628 0.70 -2115 0.70 -817 0.70 -883 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.70 -803 0.70 -2320 0.70 -354 0.70 -501 0.73 -4624 0.70 -2091 0.70 -814 0.70 -880 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500KV + RAS 0.70 -796 0.70 -2211 0.70 -350 0.70 -491 0.75 -4484 0.70 -2024 0.70 -805 0.70 -871 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.70 -802 0.70 -2358 0.70 -350 0.70 -502 0.70 -4464 0.70 -2124 0.70 -815 0.70 -879 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.70 -805 0.70 -2370 0.70 -352 0.70 -505 0.72 -4527 0.70 -2126 0.70 -818 0.70 -881 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.70 -804 0.70 -2340 0.70 -354 0.70 -503 0.71 -4731 0.70 -2101 0.70 -815 0.70 -881 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.70 -806 0.70 -2372 0.70 -353 0.70 -506 0.73 -4554 0.70 -2129 0.70 -819 0.70 -883 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.70 -790 0.70 -2385 0.70 -253 0.70 -506 0.70 -4239 0.70 -2137 0.70 -819 0.70 -867 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.70 -807 0.70 -2380 0.70 -354 0.70 -507 0.72 -4574 0.70 -2132 0.70 -820 0.70 -884 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4681 0.70 -2136 0.70 -820 0.70 -885 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.70 -808 0.70 -2381 0.70 -355 0.70 -508 0.73 -4583 0.70 -2133 0.70 -820 0.70 -884 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.70 -806 0.70 -2335 0.70 -356 0.70 -505 0.79 -4488 0.70 -2113 0.70 -818 0.70 -883 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.70 -805 0.70 -2302 0.70 -353 0.70 -508 0.76 -4523 0.70 -2087 0.70 -820 0.70 -882 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.70 -807 0.70 -2377 0.70 -355 0.70 -507 0.73 -4579 0.70 -2131 0.70 -820 0.70 -884 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.70 -807 0.70 -2372 0.70 -355 0.70 -506 0.72 -4614 0.70 -2127 0.70 -819 0.70 -883 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4674 0.70 -2134 0.70 -820 0.70 -885 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.71 -4693 0.70 -2135 0.70 -820 0.70 -885 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV 0.70 -809 0.70 -2387 0.70 -357 0.70 -509 0.73 -4512 0.70 -2137 0.70 -821 0.70 -886 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -507 0.73 -4560 0.70 -2134 0.70 -820 0.70 -884 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4682 0.70 -2135 0.70 -820 0.70 -885 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4655 0.70 -2134 0.70 -820 0.70 -885 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4689 0.70 -2135 0.70 -820 0.70 -885 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4687 0.70 -2135 0.70 -820 0.70 -885 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV 0.70 -802 0.70 -2359 0.70 -350 0.70 -502 0.73 -4311 0.70 -2121 0.70 -816 0.70 -879 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.70 -806 0.70 -2371 0.70 -353 0.70 -506 0.73 -4535 0.70 -2129 0.70 -819 0.70 -883 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.70 -807 0.70 -2379 0.70 -354 0.70 -507 0.73 -4586 0.70 -2132 0.70 -820 0.70 -884 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.70 -807 0.70 -2381 0.70 -355 0.70 -507 0.73 -4609 0.70 -2133 0.70 -820 0.70 -884 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.70 -807 0.70 -2374 0.70 -354 0.70 -507 0.73 -4544 0.70 -2130 0.70 -819 0.70 -884 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.70 -807 0.70 -2376 0.70 -354 0.70 -507 0.73 -4569 0.70 -2130 0.70 -819 0.70 -884 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV 0.70 -807 0.70 -2377 0.70 -355 0.70 -506 0.74 -4470 0.70 -2130 0.70 -819 0.70 -884 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.70 -810 0.70 -2390 0.70 -357 0.70 -510 0.72 -4583 0.70 -2138 0.70 -822 0.70 -887 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4644 0.70 -2134 0.70 -820 0.70 -885 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -509 0.73 -4619 0.70 -2137 0.70 -821 0.70 -885 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4660 0.70 -2135 0.70 -820 0.70 -885 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.70 -802 0.70 -2298 0.70 -351 0.70 -506 0.74 -4602 0.70 -2077 0.70 -818 0.70 -879 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.70 -803 0.70 -2307 0.70 -352 0.70 -507 0.73 -4666 0.70 -2082 0.70 -819 0.70 -880 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4673 0.70 -2134 0.70 -820 0.70 -884 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.70 -808 0.70 -2391 0.70 -356 0.70 -508 0.71 -4729 0.70 -2136 0.70 -820 0.70 -885 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.70 -806 0.70 -2349 0.70 -356 0.70 -505 0.78 -4516 0.70 -2116 0.70 -818 0.70 -883 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.70 -808 0.70 -2383 0.70 -355 0.70 -507 0.72 -4681 0.70 -2133 0.70 -820 0.70 -884 Page 589 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.70 -806 0.70 -2347 0.70 -354 0.70 -508 0.71 -4755 0.70 -2105 0.70 -819 0.70 -883 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.70 -808 0.70 -2382 0.70 -355 0.70 -507 0.72 -4632 0.70 -2132 0.70 -820 0.70 -884 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -507 0.71 -4735 0.70 -2134 0.70 -819 0.70 -884 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.70 -808 0.70 -2385 0.70 -355 0.70 -507 0.72 -4653 0.70 -2134 0.70 -820 0.70 -884 BF 4708 HATWAI 500 KV BUS 0.70 -803 0.70 -2320 0.70 -354 0.70 -500 0.72 -4634 0.70 -2093 0.70 -814 0.70 -879 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.70 -808 0.70 -2382 0.70 -355 0.70 -507 0.72 -4665 0.70 -2133 0.70 -820 0.70 -884 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV 0.70 -802 0.70 -2307 0.70 -353 0.70 -498 0.73 -4573 0.70 -2086 0.70 -812 0.70 -878 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.70 -803 0.70 -2319 0.70 -353 0.70 -500 0.72 -4619 0.70 -2093 0.70 -814 0.70 -879 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4677 0.70 -2136 0.70 -820 0.70 -885 BF 4888 ASHE-SLATT & CGS 500 KV 0.70 -801 0.70 -2257 0.70 -351 0.70 -507 0.73 -4667 0.70 -2052 0.70 -818 0.70 -878 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.70 -807 0.70 -2362 0.70 -354 0.70 -506 0.73 -4557 0.70 -2125 0.70 -819 0.70 -883 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.70 -807 0.70 -2361 0.70 -353 0.70 -507 0.75 -4319 0.70 -2129 0.70 -820 0.70 -884 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.70 -804 0.70 -2358 0.70 -352 0.70 -504 0.74 -4460 0.70 -2120 0.70 -817 0.70 -881 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.70 -741 0.70 -1931 0.70 -337 0.70 -420 0.75 -4172 0.70 -1971 0.70 -741 0.70 -811 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.70 -745 0.70 -2004 0.70 -337 0.70 -427 0.74 -4228 0.70 -2031 0.70 -746 0.70 -814 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.70 -811 0.70 -2400 0.70 -359 0.70 -510 0.70 -4102 0.70 -2143 0.70 -822 0.70 -888 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.70 -800 0.70 -2340 0.70 -351 0.70 -498 0.72 -4484 0.70 -2123 0.70 -811 0.70 -876 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.70 -796 0.70 -2327 0.70 -351 0.70 -492 0.74 -4484 0.70 -2122 0.70 -806 0.70 -871 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.70 -803 0.70 -2356 0.70 -352 0.70 -501 0.73 -4443 0.70 -2124 0.70 -815 0.70 -879 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.70 -804 0.70 -2358 0.70 -353 0.70 -503 0.73 -4527 0.70 -2129 0.70 -816 0.70 -880 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.70 -804 0.70 -2369 0.70 -353 0.70 -503 0.73 -4595 0.70 -2130 0.70 -816 0.70 -881 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.70 -805 0.70 -2346 0.70 -352 0.70 -505 0.70 -4558 0.70 -2121 0.70 -818 0.70 -882 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.70 -804 0.70 -2364 0.70 -351 0.70 -504 0.71 -4520 0.70 -2123 0.70 -817 0.70 -881 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.72 -4691 0.70 -2136 0.70 -820 0.70 -885 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -508 0.72 -4656 0.70 -2133 0.70 -820 0.70 -885 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.70 -807 0.70 -2371 0.70 -354 0.70 -507 0.73 -4542 0.70 -2128 0.70 -819 0.70 -884 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.70 -808 0.70 -2382 0.70 -355 0.70 -508 0.73 -4559 0.70 -2134 0.70 -820 0.70 -885 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.70 -808 0.70 -2383 0.70 -355 0.70 -508 0.73 -4614 0.70 -2134 0.70 -820 0.70 -884 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.70 -807 0.70 -2361 0.70 -355 0.70 -507 0.72 -4640 0.70 -2129 0.70 -819 0.70 -884 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.70 -805 0.70 -2278 0.70 -353 0.70 -507 0.73 -4625 0.70 -2081 0.70 -819 0.70 -881 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.70 -806 0.70 -2351 0.70 -356 0.70 -505 0.80 -4434 0.70 -2117 0.70 -818 0.70 -883 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.70 -804 0.70 -2290 0.70 -353 0.70 -507 0.77 -4377 0.70 -2081 0.70 -819 0.70 -881 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.70 -807 0.70 -2372 0.70 -354 0.70 -506 0.73 -4579 0.70 -2128 0.70 -819 0.70 -883 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.70 -807 0.70 -2376 0.70 -355 0.70 -507 0.73 -4571 0.70 -2131 0.70 -819 0.70 -884 BF 5266 SLATT-BUCKLY 500 KV 0.70 -803 0.70 -2374 0.70 -353 0.70 -502 0.72 -4538 0.70 -2129 0.70 -815 0.70 -880 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4656 0.70 -2136 0.70 -820 0.70 -885 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4611 0.70 -2136 0.70 -820 0.70 -885 BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.70 -753 0.70 -1313 0.70 -335 0.70 -428 0.75 -4444 0.70 -1686 0.70 -756 0.70 -823 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.70 -748 0.70 -1567 0.70 -339 0.70 -427 0.77 -4259 0.70 -1862 0.70 -749 0.70 -817 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.70 -745 0.70 -1365 0.70 -341 0.70 -408 0.74 -4603 0.70 -1478 0.70 -751 0.70 -814 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR 0.70 -795 0.70 -1787 0.70 -354 0.70 -499 0.74 -4808 0.70 -1887 0.70 -796 0.70 -870 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.70 -768 0.70 -1627 0.70 -349 0.70 -455 0.72 -4855 0.70 -1650 0.70 -761 0.70 -840 BF LOLO 230KV 0.70 -800 0.70 -2278 0.70 -352 0.70 -495 0.72 -4641 0.70 -2076 0.70 -811 0.70 -876 BF PGE GRASSLAND-CEDAR SPRING & HEMINGWAY-GRASSLAND 500 KV 0.70 -751 0.70 -1676 0.70 -333 0.70 -430 0.76 -4308 0.70 -1810 0.70 -756 0.70 -822 BF PGE GRASSLAND-COYOTE 500 KV & CARTY GAS PROJECT 0.70 -808 0.70 -2345 0.70 -355 0.70 -507 0.71 -4687 0.70 -2123 0.70 -820 0.70 -884 BF PGE SLATT-GRASSLAND 500 KV & BOARDMAN COAL GEN 0.70 -802 0.70 -2255 0.70 -353 0.70 -504 0.73 -4650 0.70 -2067 0.70 -816 0.70 -879 BUS: ALVEY 500 KV 0.70 -803 0.70 -2372 0.70 -349 0.70 -504 0.72 -4374 0.70 -2128 0.70 -817 0.70 -880 BUS: BELL BPA 500 KV 0.70 -798 0.70 -2242 0.70 -351 0.70 -493 0.75 -4450 0.70 -2047 0.70 -808 0.70 -873 BUS: BUCKLEY 500 KV 0.70 -801 0.70 -2350 0.70 -349 0.70 -501 0.73 -4343 0.70 -2119 0.70 -814 0.70 -877 BUS: DIXONVILLE 500 KV 0.70 -805 0.70 -2382 0.70 -351 0.70 -506 0.71 -4493 0.70 -2132 0.70 -818 0.70 -882 BUS: HOT SPRINGS 500 KV 0.70 -808 0.70 -2391 0.70 -356 0.70 -508 0.71 -4710 0.70 -2137 0.70 -820 0.70 -885 BUS: KEELER 500 KV 0.70 -807 0.70 -2377 0.70 -355 0.70 -507 0.75 -4428 0.70 -2130 0.70 -819 0.70 -884 Page 590 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BUS: ROCK CREEK 500 KV 0.70 -806 0.70 -2363 0.70 -354 0.70 -506 0.73 -4543 0.70 -2123 0.70 -819 0.70 -883 BUS: SICKLER 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -508 0.72 -4666 0.70 -2134 0.70 -820 0.70 -885 BUS: SUMMER LAKE 500 KV 0.70 -741 0.70 -1934 0.70 -337 0.70 -420 0.75 -4191 0.70 -1972 0.70 -741 0.70 -810 N-1: ALLSTON-KEELER 500 KV 0.70 -807 0.70 -2377 0.70 -355 0.70 -506 0.74 -4471 0.70 -2130 0.70 -819 0.70 -883 N-1: ALLSTON-NAPAVINE 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -507 0.72 -4641 0.70 -2133 0.70 -820 0.70 -884 N-1: ALLSTON-PAUL #2 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -507 0.72 -4656 0.70 -2133 0.70 -820 0.70 -884 N-1: ALVERY-DIXONVILLE 500 KV 0.70 -805 0.70 -2383 0.70 -351 0.70 -505 0.71 -4491 0.70 -2132 0.70 -818 0.70 -881 N-1: ALVEY-MARION 500 KV 0.70 -805 0.70 -2380 0.70 -352 0.70 -505 0.73 -4494 0.70 -2131 0.70 -818 0.70 -881 N-1: ASHE-HANFORD 500 KV 0.70 -807 0.70 -2375 0.70 -354 0.70 -507 0.73 -4551 0.70 -2132 0.70 -820 0.70 -884 N-1: ASHE-LOW MON 500 KV 0.70 -807 0.70 -2378 0.70 -355 0.70 -507 0.72 -4658 0.70 -2130 0.70 -819 0.70 -884 N-1: ASHE-MARION 500 KV 0.70 -805 0.70 -2368 0.70 -353 0.70 -505 0.73 -4517 0.70 -2125 0.70 -818 0.70 -882 N-1: ASHE-SLATT 500 KV 0.70 -807 0.70 -2371 0.70 -355 0.70 -507 0.72 -4603 0.70 -2130 0.70 -820 0.70 -884 N-1: BELL-COULEE 500 KV 0.70 -804 0.70 -2339 0.70 -354 0.70 -502 0.72 -4666 0.70 -2105 0.70 -815 0.70 -880 N-1: BELL-TAFT 500 KV 0.70 -798 0.70 -2241 0.70 -351 0.70 -493 0.77 -4318 0.70 -2047 0.70 -808 0.70 -873 N-1: BIG EDDY-CELILO 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4705 0.70 -2136 0.70 -820 0.70 -885 N-1: BIG EDDY-JOHN DAY 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4681 0.70 -2136 0.70 -820 0.70 -885 N-1: BIG EDDY-KNIGHT 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -508 0.70 -4677 0.70 -2134 0.70 -820 0.70 -885 N-1: BIG EDDY-OSTRANDER 500 KV 0.70 -807 0.70 -2381 0.70 -355 0.70 -507 0.72 -4617 0.70 -2133 0.70 -820 0.70 -884 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.70 -808 0.70 -2368 0.70 -355 0.70 -507 0.71 -4703 0.70 -2116 0.70 -820 0.70 -885 N-1: BRADY-ANTELOPE 230 KV + RAS 0.70 -805 0.70 -2339 0.70 -354 0.70 -503 0.71 -4693 0.70 -2097 0.70 -816 0.70 -881 N-1: BROADVIEW-GARRISON #1 500 KV 0.70 -804 0.70 -2328 0.70 -354 0.70 -503 0.72 -4688 0.70 -2091 0.70 -816 0.70 -881 N-1: BROWNLEE-ONTARIO 230 KV 0.70 -808 0.70 -2374 0.70 -355 0.70 -507 0.71 -4703 0.70 -2129 0.70 -820 0.70 -885 N-1: BUCKLEY-GRIZZLY 500 KV 0.70 -805 0.70 -2379 0.70 -352 0.70 -505 0.70 -4589 0.70 -2130 0.70 -818 0.70 -882 N-1: BUCKLEY-MARION 500 KV 0.70 -806 0.70 -2373 0.70 -353 0.70 -506 0.73 -4553 0.70 -2130 0.70 -819 0.70 -883 N-1: BUCKLEY-SLATT 500 KV 0.70 -803 0.70 -2374 0.70 -353 0.70 -502 0.72 -4540 0.70 -2129 0.70 -815 0.70 -880 N-1: CAL SUB 120 KV PHASE SHIFTER 0.70 -782 0.70 -2378 0.70 -338 0.70 -528 0.71 -4645 0.70 -2139 0.70 -837 0.72 -846 N-1: CAPTAIN JACK-OLINDA 500 KV 0.70 -807 0.70 -2397 0.70 -353 0.70 -499 0.73 -3983 0.70 -2144 0.70 -812 0.70 -882 N-1: CAPTJACK-KFALLS 500 KV 0.70 -806 0.70 -2380 0.70 -352 0.70 -505 0.70 -4584 0.70 -2131 0.70 -818 0.70 -882 N-1: CASCADE CROSSING 500 KV 0.70 -803 0.70 -2367 0.70 -351 0.70 -503 0.75 -4404 0.70 -2129 0.70 -816 0.70 -879 N-1: CHIEF JO-COULEE 500 KV 0.70 -808 0.70 -2382 0.70 -355 0.70 -507 0.72 -4663 0.70 -2132 0.70 -820 0.70 -884 N-1: CHIEF JO-MONROE 500 KV 0.70 -808 0.70 -2382 0.70 -355 0.70 -507 0.72 -4632 0.70 -2132 0.70 -820 0.70 -884 N-1: CHIEF JO-SICKLER 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4683 0.70 -2134 0.70 -820 0.70 -885 N-1: COULEE-HANFORD 500 KV 0.70 -808 0.70 -2381 0.70 -355 0.70 -507 0.73 -4611 0.70 -2133 0.70 -820 0.70 -884 N-1: COULEE-SCHULTZ 500 KV 0.70 -807 0.70 -2378 0.70 -355 0.70 -507 0.72 -4630 0.70 -2131 0.70 -819 0.70 -884 N-1: COVINGTON4-RAVER 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4695 0.70 -2136 0.70 -820 0.70 -885 N-1: COVINGTON5-RAVER 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4694 0.70 -2136 0.70 -820 0.70 -885 N-1: COYOTE-LONGHORN 500 KV 0.70 -807 0.70 -2380 0.70 -355 0.70 -507 0.71 -4696 0.70 -2137 0.70 -819 0.70 -884 N-1: CUSTERW-MONROE 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4676 0.70 -2134 0.70 -820 0.70 -885 N-1: DIXONVILLE-MERIDIAN 500 KV 0.70 -806 0.70 -2380 0.70 -351 0.70 -506 0.71 -4510 0.70 -2131 0.70 -819 0.70 -882 N-1: DRYCREEK-LOLO 230 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.71 -4705 0.70 -2135 0.70 -820 0.70 -885 N-1: DRYCREEK-N LEWISTON 230 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.71 -4705 0.70 -2135 0.70 -820 0.70 -885 N-1: DRYCREEK-WALA AVA 230 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -507 0.72 -4692 0.70 -2134 0.70 -820 0.70 -885 N-1: DWORSHAK-HATWAI 500 KV 0.70 -806 0.70 -2355 0.70 -355 0.70 -505 0.72 -4689 0.70 -2112 0.70 -817 0.70 -882 N-1: DWORSHAK-TAFT 500 KV 0.70 -806 0.70 -2352 0.70 -354 0.70 -505 0.72 -4619 0.70 -2113 0.70 -817 0.70 -882 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4665 0.70 -2134 0.70 -820 0.70 -885 N-1: ECHO LAKE-RAVER 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.71 -4691 0.70 -2135 0.70 -820 0.70 -885 N-1: ECHO LAKE-SCHULTZ 500 KV 0.70 -808 0.70 -2382 0.70 -355 0.70 -507 0.72 -4628 0.70 -2133 0.70 -820 0.70 -884 N-1: ECHO LAKE-SNOK TAP 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4687 0.70 -2136 0.70 -820 0.70 -885 N-1: GARRISON-TAFT #2 500 KV 0.70 -803 0.70 -2320 0.70 -354 0.70 -501 0.73 -4624 0.70 -2091 0.70 -814 0.70 -880 N-1: GOLDHILL-PLACER 115 KV 0.70 -808 0.70 -2390 0.70 -355 0.70 -509 0.71 -4709 0.70 -2137 0.70 -821 0.70 -885 N-1: GRASSLAND-COYOTE 500 KV 0.70 -808 0.70 -2345 0.70 -355 0.70 -507 0.71 -4688 0.70 -2123 0.70 -820 0.70 -884 N-1: GRASSLAND-SLATT 500 KV 0.70 -804 0.70 -2355 0.70 -354 0.70 -502 0.72 -4650 0.70 -2131 0.70 -815 0.70 -880 Page 591 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: GRIZZLY-JOHN DAY #2 500 KV 0.70 -805 0.70 -2370 0.70 -352 0.70 -505 0.72 -4529 0.70 -2126 0.70 -818 0.70 -881 N-1: GRIZZLY-MALIN 500 KV 0.70 -801 0.70 -2364 0.70 -347 0.70 -501 0.70 -4418 0.70 -2123 0.70 -814 0.70 -877 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.70 -808 0.70 -2352 0.70 -355 0.70 -508 0.70 -4657 0.70 -2124 0.70 -820 0.70 -885 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.70 -800 0.70 -2364 0.70 -347 0.70 -500 0.70 -4437 0.70 -2123 0.70 -814 0.70 -877 N-1: GRIZZLY-ROUND BU 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -508 0.71 -4689 0.70 -2134 0.70 -820 0.70 -884 N-1: HANFORD-LOW MON 500 KV 0.70 -807 0.70 -2375 0.70 -355 0.70 -506 0.72 -4637 0.70 -2129 0.70 -819 0.70 -883 N-1: HANFORD-VANTAGE 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4612 0.70 -2136 0.70 -820 0.70 -885 N-1: HANFORD-WAUTOMA 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -507 0.72 -4694 0.70 -2134 0.70 -820 0.70 -885 N-1: HARRY ALLEN 345 KV PHASE SHIFTER 0.70 -779 0.70 -2137 0.70 -352 0.70 -449 0.75 -4376 0.70 -1954 0.70 -733 0.70 -850 N-1: HATWAI 500/230 KV XFMR 0.70 -807 0.70 -2382 0.70 -355 0.70 -507 0.71 -4701 0.70 -2132 0.70 -819 0.70 -884 N-1: HATWAI-LOLO 230 KV 0.70 -807 0.70 -2382 0.70 -355 0.70 -507 0.71 -4703 0.70 -2132 0.70 -819 0.70 -884 N-1: HATWAI-LOW GRAN 500 KV 0.70 -803 0.70 -2321 0.70 -354 0.70 -500 0.72 -4639 0.70 -2094 0.70 -814 0.70 -879 N-1: HATWAI-N LEWISTON 230 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4707 0.70 -2135 0.70 -820 0.70 -885 N-1: HELLS CANYON-BROWNLEE 230 KV 0.70 -806 0.70 -2336 0.70 -355 0.70 -506 0.71 -4756 0.70 -2109 0.70 -819 0.70 -883 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.70 -796 0.70 -2197 0.70 -351 0.70 -488 0.72 -4647 0.70 -2030 0.70 -807 0.70 -872 N-1: HEMINGWAY-GRASSLAND 500 KV 0.70 -753 0.70 -1673 0.70 -334 0.70 -431 0.74 -4458 0.70 -1806 0.70 -756 0.70 -823 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.70 -748 0.70 -1942 0.70 -339 0.70 -428 0.75 -4318 0.70 -1980 0.70 -749 0.70 -818 N-1: HILL TOP 345/230 XFMR 0.70 -797 0.70 -2353 0.70 -230 0.70 -572 0.72 -4604 0.70 -2137 0.70 -871 0.72 -895 N-1: HORSE HV-MCNARY 230 KV 0.70 -807 0.70 -2385 0.70 -355 0.70 -507 0.71 -4687 0.70 -2134 0.70 -820 0.70 -884 N-1: HOT SPRINGS-TAFT 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.71 -4689 0.70 -2133 0.70 -820 0.70 -885 N-1: HUMBOLDT-COYOTE CK 345 KV 0.70 -856 0.70 -2273 0.70 -383 0.70 -215 0.74 -4476 0.70 -2067 0.70 -738 0.72 -925 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.70 -784 0.70 -2165 0.70 -351 0.70 -463 0.75 -4421 0.70 -1979 0.70 -753 0.70 -857 N-1: ING500-CUSTERW 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.71 -4696 0.70 -2135 0.70 -820 0.70 -885 N-1: JOHN DAY-MARION 500 KV 0.70 -806 0.70 -2372 0.70 -353 0.70 -506 0.73 -4553 0.70 -2129 0.70 -819 0.70 -883 N-1: JOHN DAY-ROCK CK 500 KV 0.70 -807 0.70 -2380 0.70 -355 0.70 -507 0.72 -4611 0.70 -2131 0.70 -819 0.70 -884 N-1: JOHN DAY-SLATT 500 KV 0.70 -805 0.70 -2379 0.70 -354 0.70 -504 0.72 -4641 0.70 -2134 0.70 -817 0.70 -881 N-1: KFALLS-MERIDIAN 500 KV 0.70 -808 0.70 -2376 0.70 -353 0.70 -510 0.71 -4582 0.70 -2131 0.70 -822 0.70 -885 N-1: KNIGHT-WAUTOMA 500 KV 0.70 -807 0.70 -2375 0.70 -354 0.70 -506 0.73 -4597 0.70 -2129 0.70 -819 0.70 -883 N-1: LAGRANDE-NORTH POWDER 230 KV 0.70 -801 0.70 -2299 0.70 -353 0.70 -497 0.72 -4678 0.70 -2087 0.70 -812 0.70 -877 N-1: LANES-MARION 500 KV 0.70 -807 0.70 -2380 0.70 -354 0.70 -507 0.72 -4601 0.70 -2132 0.70 -819 0.70 -884 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.71 -4696 0.70 -2134 0.70 -820 0.70 -885 N-1: LIT GOOSE-LOW MON 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -507 0.72 -4691 0.70 -2134 0.70 -820 0.70 -885 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -507 0.72 -4691 0.70 -2133 0.70 -820 0.70 -884 N-1: LOW MON-SAC TAP 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4661 0.70 -2135 0.70 -820 0.70 -885 N-1: MALIN 500/230 XFMR 0.70 -791 0.70 -2387 0.70 -253 0.70 -512 0.71 -4704 0.70 -2136 0.70 -824 0.70 -869 N-1: MALIN-HILLTOP 230 KV 0.70 -787 0.70 -2367 0.70 -177 0.70 -550 0.71 -4630 0.70 -2137 0.70 -855 0.72 -879 N-1: MALIN-ROUND MTN #1 500 KV 0.70 -806 0.70 -2387 0.70 -353 0.70 -503 0.71 -4249 0.70 -2137 0.70 -815 0.70 -882 N-1: MALIN-ROUND MTN #2 500 KV 0.70 -806 0.70 -2387 0.70 -352 0.70 -503 0.71 -4229 0.70 -2137 0.70 -815 0.70 -882 N-1: MALIN-SUMMER LAKE 500 KV 0.70 -793 0.70 -2353 0.70 -350 0.70 -489 0.70 -4457 0.70 -2135 0.70 -803 0.70 -868 N-1: MAPLE VLY-ROCKY RH 345 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4688 0.70 -2135 0.70 -820 0.70 -885 N-1: MARION-PEARL 500 KV 0.70 -810 0.70 -2391 0.70 -357 0.70 -510 0.72 -4596 0.70 -2138 0.70 -821 0.70 -887 N-1: MARION-SANTIAM 500 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4699 0.70 -2135 0.70 -820 0.70 -885 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4689 0.70 -2135 0.70 -820 0.70 -885 N-1: MCNARY 500/230 KV XFMR 0.70 -806 0.70 -2358 0.70 -356 0.70 -505 0.79 -4531 0.70 -2119 0.70 -818 0.70 -883 N-1: MCNARY-BOARD T1 230 KV 0.70 -808 0.70 -2396 0.70 -356 0.70 -508 0.71 -4709 0.70 -2140 0.70 -820 0.70 -885 N-1: MCNARY-JOHN DAY 500 KV 0.70 -805 0.70 -2367 0.70 -354 0.70 -504 0.73 -4579 0.70 -2126 0.70 -817 0.70 -882 N-1: MCNARY-LONGHORN 500 KV 0.70 -808 0.70 -2368 0.70 -356 0.70 -508 0.71 -4680 0.70 -2130 0.70 -820 0.70 -885 N-1: MCNARY-ROSS 345 KV 0.70 -807 0.70 -2378 0.70 -355 0.70 -507 0.73 -4617 0.70 -2131 0.70 -819 0.70 -884 N-1: MCNARY-ROUNDUP 230 KV 0.70 -803 0.70 -2325 0.70 -354 0.70 -500 0.71 -4694 0.70 -2101 0.70 -815 0.70 -880 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.70 -808 0.70 -2381 0.70 -355 0.70 -508 0.73 -4601 0.70 -2133 0.70 -820 0.70 -884 N-1: MIDPOINT-HEMINGWAY 500 KV 0.70 -770 0.70 -1785 0.70 -345 0.70 -449 0.72 -4655 0.70 -1508 0.70 -779 0.70 -842 N-1: MIDPOINT-HUMBOLDT 345 KV 0.70 -858 0.70 -2243 0.70 -387 0.70 -369 0.75 -4438 0.70 -2059 0.70 -712 0.72 -925 Page 592 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: NAPAVINE-PAUL 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4703 0.70 -2136 0.70 -820 0.70 -885 N-1: OLYMPIA-PAUL 500 KV 0.70 -808 0.70 -2391 0.70 -356 0.70 -508 0.71 -4737 0.70 -2136 0.70 -820 0.70 -885 N-1: ONTARIO-CALDWELL 230 KV 0.70 -808 0.70 -2349 0.70 -356 0.70 -508 0.71 -4704 0.70 -2110 0.70 -820 0.70 -885 N-1: OSTRANDER-KNIGHT 500 KV 0.70 -807 0.70 -2377 0.70 -354 0.70 -507 0.73 -4587 0.70 -2131 0.70 -819 0.70 -884 N-1: OSTRANDER-PEARL 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4681 0.70 -2136 0.70 -820 0.70 -885 N-1: OSTRANDER-TROUTDALE 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4674 0.70 -2134 0.70 -820 0.70 -885 N-1: OXBOW-BROWNLEE #2 230 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.71 -4706 0.70 -2134 0.70 -820 0.70 -885 N-1: OXBOW-LOLO 230 KV 0.70 -800 0.70 -2275 0.70 -352 0.70 -495 0.72 -4648 0.70 -2075 0.70 -811 0.70 -876 N-1: PAUL-SATSOP 500 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4671 0.70 -2135 0.70 -820 0.70 -885 N-1: PEARL-KEELER 500 KV 0.70 -808 0.70 -2387 0.70 -356 0.70 -508 0.73 -4596 0.70 -2136 0.70 -820 0.70 -885 N-1: PINTO-FOUR CORNER 345 KV 0.70 -786 0.70 -2181 0.70 -352 0.70 -465 0.75 -4434 0.70 -1991 0.70 -757 0.70 -859 N-1: PONDEROSA A 500/230 KV XFMR 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4702 0.70 -2136 0.70 -820 0.70 -885 N-1: PONDEROSA B 500/230 KV XFMR 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.71 -4708 0.70 -2135 0.70 -820 0.70 -885 N-1: POPULUS-CEDAR HILL-HEMINGWAY 500 KV 0.70 -801 0.70 -2191 0.70 -355 0.70 -514 0.70 -4877 0.70 -2075 0.70 -804 0.70 -878 N-1: RAVER-PAUL 500 KV 0.70 -809 0.70 -2391 0.70 -356 0.70 -509 0.72 -4680 0.70 -2137 0.70 -821 0.70 -885 N-1: RAVER-TACOMA 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4686 0.70 -2135 0.70 -820 0.70 -885 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.70 -779 0.70 -2136 0.70 -352 0.70 -449 0.75 -4376 0.70 -1953 0.70 -733 0.70 -850 N-1: ROBINSON-HARRY ALLEN 500 KV 0.70 -775 0.70 -2380 0.70 -345 0.70 -448 0.73 -4627 0.70 -2132 0.70 -421 0.71 -837 N-1: ROCK CK-WAUTOMA 500 KV 0.70 -807 0.70 -2379 0.70 -355 0.70 -507 0.73 -4584 0.70 -2132 0.70 -820 0.70 -884 N-1: ROUND MTN-TABLE MTN 500 KV 0.70 -807 0.70 -2393 0.70 -355 0.70 -504 0.71 -4479 0.70 -2139 0.70 -817 0.70 -884 N-1: ROUNDUP-LAGRANDE 230 KV 0.70 -802 0.70 -2313 0.70 -353 0.70 -499 0.71 -4685 0.70 -2095 0.70 -814 0.70 -879 N-1: SCHULTZ-SICKLER 500 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4692 0.70 -2135 0.70 -820 0.70 -885 N-1: SCHULTZ-VANTAGE 500 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4662 0.70 -2135 0.70 -820 0.70 -885 N-1: SCHULTZ-WAUTOMA 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.73 -4594 0.70 -2135 0.70 -820 0.70 -885 N-1: SIGURD-GLEN CANYON 230 KV 0.70 -802 0.70 -2343 0.70 -354 0.70 -497 0.72 -4643 0.70 -2105 0.70 -803 0.70 -878 N-1: SLATT 500/230 KV XFMR 0.70 -808 0.70 -2384 0.70 -355 0.70 -508 0.72 -4687 0.70 -2134 0.70 -820 0.70 -885 N-1: SLATT-LONGHORN 500 KV 0.70 -807 0.70 -2380 0.70 -355 0.70 -506 0.72 -4662 0.70 -2132 0.70 -819 0.70 -884 N-1: SNOK TAP-SNOKING 500 KV 0.70 -808 0.70 -2386 0.70 -355 0.70 -508 0.72 -4690 0.70 -2134 0.70 -820 0.70 -885 N-1: TABLE MTN-TESLA 500 KV 0.70 -809 0.70 -2401 0.70 -357 0.70 -506 0.71 -4553 0.70 -2143 0.70 -818 0.70 -886 N-1: TABLE MTN-VACA DIXON 500 KV 0.70 -810 0.70 -2407 0.70 -357 0.70 -504 0.71 -4431 0.70 -2147 0.70 -816 0.70 -886 N-1: VANTAGE 500/230 KV XFMR #1 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4705 0.70 -2136 0.70 -820 0.70 -885 N-1: VANTAGE 500/230 KV XFMR #2 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.71 -4706 0.70 -2136 0.70 -820 0.70 -885 N-1: WALLA WALLA-TALBOT 230 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.71 -4702 0.70 -2135 0.70 -820 0.70 -885 N-1: WALLA WALLA-WALLULA 230 KV 0.70 -807 0.70 -2369 0.70 -355 0.70 -506 0.71 -4722 0.70 -2125 0.70 -819 0.70 -884 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.70 -804 0.70 -2345 0.70 -352 0.70 -504 0.74 -4373 0.70 -2117 0.70 -817 0.70 -881 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.70 -803 0.70 -2352 0.70 -350 0.70 -503 0.75 -4295 0.70 -2119 0.70 -816 0.70 -879 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.70 -799 0.70 -2351 0.70 -349 0.70 -498 0.74 -4302 0.70 -2118 0.70 -812 0.70 -876 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.70 -804 0.70 -2358 0.70 -352 0.70 -503 0.74 -4451 0.70 -2121 0.70 -817 0.70 -881 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.70 -802 0.70 -2357 0.70 -351 0.70 -501 0.74 -4426 0.70 -2123 0.70 -814 0.70 -878 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.70 -804 0.70 -2348 0.70 -353 0.70 -503 0.74 -4462 0.70 -2119 0.70 -816 0.70 -881 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.70 -806 0.70 -2360 0.70 -354 0.70 -506 0.73 -4545 0.70 -2125 0.70 -818 0.70 -883 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.70 -795 0.70 -2149 0.70 -347 0.70 -500 0.76 -4465 0.70 -1978 0.70 -811 0.70 -871 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-ROUND BUTTE 230 KV 0.70 -803 0.70 -2370 0.70 -351 0.70 -503 0.75 -4389 0.70 -2130 0.70 -816 0.70 -880 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-SANTIAM 230 KV 0.70 -803 0.70 -2371 0.70 -351 0.70 -503 0.76 -4357 0.70 -2131 0.70 -816 0.70 -880 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.70 -807 0.70 -2379 0.70 -354 0.70 -507 0.73 -4591 0.70 -2132 0.70 -820 0.70 -884 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.70 -807 0.70 -2381 0.70 -354 0.70 -508 0.73 -4596 0.70 -2133 0.70 -820 0.70 -884 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.70 -808 0.70 -2311 0.70 -356 0.70 -506 0.71 -4696 0.70 -2064 0.70 -820 0.70 -885 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.70 -808 0.70 -2309 0.70 -356 0.70 -506 0.71 -4697 0.70 -2062 0.70 -820 0.70 -885 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.70 -810 0.70 -2220 0.70 -356 0.70 -508 0.71 -4700 0.70 -1919 0.70 -821 0.70 -887 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.70 -810 0.70 -2239 0.70 -356 0.70 -509 0.71 -4701 0.70 -1947 0.70 -822 0.70 -887 N-2: BROADVIEW-GARRISON #1 & #2 500 KV + RAS 0.70 -801 0.70 -2193 0.70 -350 0.70 -511 0.71 -4909 0.70 -1961 0.70 -820 0.70 -878 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.70 -796 0.70 -2169 0.70 -351 0.70 -488 0.71 -4686 0.70 -2017 0.70 -807 0.70 -871 Page 593 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.70 -806 0.70 -2335 0.70 -355 0.70 -506 0.71 -4755 0.70 -2108 0.70 -819 0.70 -883 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.70 -804 0.70 -2356 0.70 -350 0.70 -505 0.75 -4342 0.70 -2123 0.70 -818 0.70 -881 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.70 -807 0.70 -2376 0.70 -355 0.70 -507 0.73 -4597 0.70 -2130 0.70 -819 0.70 -884 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.70 -807 0.70 -2378 0.70 -355 0.70 -507 0.73 -4603 0.70 -2131 0.70 -819 0.70 -884 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.70 -807 0.70 -2381 0.70 -355 0.70 -507 0.72 -4624 0.70 -2132 0.70 -820 0.70 -884 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.70 -808 0.70 -2383 0.70 -355 0.70 -507 0.72 -4655 0.70 -2133 0.70 -820 0.70 -884 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.70 -807 0.70 -2380 0.70 -355 0.70 -507 0.72 -4632 0.70 -2131 0.70 -820 0.70 -884 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.70 -808 0.70 -2378 0.70 -354 0.70 -508 0.74 -4462 0.70 -2134 0.70 -820 0.70 -885 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.70 -806 0.70 -2360 0.70 -354 0.70 -505 0.74 -4523 0.70 -2121 0.70 -818 0.70 -883 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4665 0.70 -2134 0.70 -820 0.70 -885 N-2: CUSTERW-MONROE #1 & #2 500 KV 0.70 -808 0.70 -2382 0.70 -355 0.70 -507 0.73 -4624 0.70 -2132 0.70 -820 0.70 -884 N-2: DC-BIPOLE 0.70 -814 0.70 -2519 0.70 -365 0.70 -484 0.71 -4665 0.70 -2205 0.70 -796 0.70 -890 N-2: DOUBLE PALO VERDE 0.70 -829 0.70 -2419 0.70 -366 0.70 -461 0.74 -4063 0.70 -2125 0.70 -806 0.70 -904 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4666 0.70 -2134 0.70 -820 0.70 -885 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.70 -808 0.70 -2383 0.70 -355 0.70 -507 0.72 -4637 0.70 -2133 0.70 -820 0.70 -884 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.70 -795 0.70 -2159 0.70 -348 0.70 -499 0.73 -4758 0.70 -1972 0.70 -810 0.70 -871 N-2: GRASSLAND-CEDAR SPRING & SLATT - BUCKLEY 500 KV 0.70 -797 0.70 -2359 0.70 -349 0.70 -495 0.74 -4308 0.70 -2125 0.70 -809 0.70 -873 N-2: GRASSLAND-COYOTE & SLATT - LONGHORN 500 KV 0.70 -807 0.70 -2295 0.70 -354 0.70 -505 0.72 -4591 0.70 -2103 0.70 -819 0.70 -883 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV 0.70 -788 0.70 -2341 0.70 -337 0.70 -487 0.70 -4004 0.70 -2111 0.70 -802 0.70 -863 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV 0.70 -800 0.70 -2321 0.70 -346 0.70 -500 0.70 -4259 0.70 -2107 0.70 -813 0.70 -876 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV 0.70 -775 0.70 -2343 0.70 -338 0.70 -468 0.70 -3964 0.70 -2134 0.70 -784 0.70 -848 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.70 -804 0.70 -2335 0.70 -352 0.70 -503 0.78 -4156 0.70 -2115 0.70 -816 0.70 -880 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.70 -806 0.70 -2373 0.70 -355 0.70 -505 0.72 -4635 0.70 -2128 0.70 -818 0.70 -883 N-2: HELLS CANYON-BROWNLEE & OXBOW-LOLO 230 KV 0.70 -796 0.70 -2178 0.70 -351 0.70 -488 0.72 -4652 0.70 -2024 0.70 -807 0.70 -872 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.70 -809 0.70 -2391 0.70 -355 0.70 -510 0.76 -4393 0.70 -2141 0.70 -822 0.70 -886 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.70 -806 0.70 -2370 0.70 -353 0.70 -506 0.73 -4506 0.70 -2128 0.70 -819 0.70 -883 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV 0.70 -797 0.70 -2337 0.70 -344 0.70 -497 0.70 -4156 0.70 -2107 0.70 -811 0.70 -873 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV 0.70 -800 0.70 -2356 0.70 -346 0.70 -500 0.70 -4351 0.70 -2117 0.70 -813 0.70 -876 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.70 -804 0.70 -2356 0.70 -350 0.70 -505 0.75 -4342 0.70 -2123 0.70 -818 0.70 -881 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.70 -808 0.70 -2372 0.70 -354 0.70 -508 0.74 -4417 0.70 -2130 0.70 -820 0.70 -885 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.70 -806 0.70 -2368 0.70 -354 0.70 -505 0.73 -4513 0.70 -2126 0.70 -818 0.70 -883 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.70 -808 0.70 -2388 0.70 -356 0.70 -508 0.73 -4588 0.70 -2136 0.70 -820 0.70 -885 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.70 -806 0.70 -2369 0.70 -353 0.70 -507 0.74 -4421 0.70 -2128 0.70 -819 0.70 -883 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.70 -806 0.70 -2366 0.70 -353 0.70 -506 0.74 -4465 0.70 -2126 0.70 -818 0.70 -882 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.70 -807 0.70 -2377 0.70 -354 0.70 -507 0.73 -4572 0.70 -2131 0.70 -819 0.70 -884 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.70 -802 0.70 -2307 0.70 -353 0.70 -498 0.73 -4573 0.70 -2086 0.70 -812 0.70 -878 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.70 -799 0.70 -2440 0.70 -355 0.70 -470 0.72 -2924 0.70 -2174 0.70 -784 0.70 -871 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.70 -804 0.70 -2356 0.70 -353 0.70 -503 0.72 -4472 0.70 -2120 0.70 -816 0.70 -880 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.70 -804 0.70 -2361 0.70 -353 0.70 -503 0.73 -4563 0.70 -2123 0.70 -816 0.70 -881 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.70 -804 0.70 -2353 0.70 -353 0.70 -502 0.74 -4464 0.70 -2119 0.70 -816 0.70 -880 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.70 -806 0.70 -2372 0.70 -354 0.70 -505 0.73 -4594 0.70 -2128 0.70 -818 0.70 -883 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.70 -771 0.70 -1780 0.70 -346 0.70 -449 0.72 -4646 0.70 -1473 0.70 -780 0.70 -843 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.70 -807 0.70 -2379 0.70 -355 0.70 -507 0.73 -4590 0.70 -2131 0.70 -819 0.70 -884 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV 0.70 -805 0.70 -2359 0.70 -353 0.70 -504 0.76 -4339 0.70 -2120 0.70 -817 0.70 -882 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV 0.70 -807 0.70 -2378 0.70 -355 0.70 -507 0.73 -4605 0.70 -2130 0.70 -819 0.70 -884 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.70 -809 0.70 -2391 0.70 -356 0.70 -509 0.72 -4669 0.70 -2137 0.70 -821 0.70 -885 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV 0.70 -808 0.70 -2388 0.70 -356 0.70 -508 0.73 -4592 0.70 -2136 0.70 -820 0.70 -885 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.70 -808 0.70 -2387 0.70 -355 0.70 -508 0.72 -4656 0.70 -2135 0.70 -820 0.70 -884 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.70 -808 0.70 -2390 0.70 -355 0.70 -508 0.72 -4662 0.70 -2136 0.70 -820 0.70 -885 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.70 -808 0.70 -2389 0.70 -355 0.70 -508 0.72 -4684 0.70 -2136 0.70 -820 0.70 -885 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4662 0.70 -2134 0.70 -820 0.70 -885 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.70 -809 0.70 -2391 0.70 -356 0.70 -509 0.72 -4671 0.70 -2137 0.70 -821 0.70 -885 Page 594 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Hemingway Hilltop Humboldt Malin Midpoint Robinson Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -509 0.72 -4640 0.70 -2136 0.70 -821 0.70 -885 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.70 -809 0.70 -2394 0.70 -356 0.70 -509 0.72 -4679 0.70 -2139 0.70 -821 0.70 -886 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.70 -807 0.70 -2373 0.70 -354 0.70 -507 0.74 -4522 0.70 -2129 0.70 -819 0.70 -884 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4668 0.70 -2135 0.70 -820 0.70 -885 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.70 -808 0.70 -2388 0.70 -355 0.70 -508 0.72 -4686 0.70 -2135 0.70 -820 0.70 -885 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV 0.70 -805 0.70 -2471 0.70 -365 0.70 -475 0.73 -3547 0.70 -2185 0.70 -789 0.70 -877 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV 0.70 -808 0.70 -2384 0.70 -355 0.70 -508 0.74 -4485 0.70 -2136 0.70 -821 0.70 -885 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV 0.70 -808 0.70 -2385 0.70 -355 0.70 -508 0.72 -4637 0.70 -2135 0.70 -820 0.70 -885 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.70 -816 0.70 -2475 0.70 -366 0.70 -490 0.73 -3993 0.70 -2187 0.70 -801 0.70 -891 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.70 -798 0.70 -2241 0.70 -351 0.70 -494 0.77 -4311 0.70 -2048 0.70 -808 0.70 -874 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV + RAS 0.70 -796 0.70 -2201 0.70 -349 0.70 -493 0.78 -4221 0.70 -2022 0.70 -807 0.70 -871 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.70 -798 0.70 -2241 0.70 -351 0.70 -493 0.77 -4317 0.70 -2047 0.70 -808 0.70 -873 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV + RAS 0.70 -797 0.70 -2225 0.70 -350 0.70 -494 0.78 -4283 0.70 -2038 0.70 -808 0.70 -873 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.70 -801 0.70 -2282 0.70 -353 0.70 -498 0.74 -4543 0.70 -2066 0.70 -811 0.70 -877 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.70 -807 0.70 -2379 0.70 -355 0.70 -507 0.73 -4572 0.70 -2132 0.70 -820 0.70 -884 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.70 -807 0.70 -2379 0.70 -355 0.70 -507 0.73 -4572 0.70 -2132 0.70 -820 0.70 -884 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.70 -807 0.70 -2373 0.70 -354 0.70 -507 0.74 -4507 0.70 -2129 0.70 -819 0.70 -884 Page 595 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I5: N-1 Loss of Hemingway-Boardman 500 kV Line (Angle & Voltage Plots) Page 596 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I6: N-1 Loss of Hemingway-Summer Lake 500 kV Line (Angle & Voltage Plots) Page 597 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I7: N-1 Loss of Hemingway-Midpoint 500 kV Line (Angle & Voltage Plots) Page 598 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I8: N-1 Loss of Hemingway-Populus 500 kV Line (Angle & Voltage Plots) Page 599 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I9: Breaker Failure Loss of Hemingway-Boardman 500 kV & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 600 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I10: Breaker Failure Loss of Hemingway-Summer Lake 500 kV & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 601 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I11: Breaker Failure Loss of Hemingway-Midpoint 500 kV & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 602 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I12: Breaker Failure Loss of Hemingway-Populus 500 kV & Hemingway 500/230 Xfmr (Angle & Voltage Plots) Page 603 of 776 Appendix I – 16la1sa_3400idnw_nv Base Case Transient Stability Plots Figure I13: Breaker Failure Midpoint 500 kV Bus (Angle & Voltage Plots) Page 604 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Transient Stability Results Largest Swing Lowest RAS Actions Largest Swing Lowest Swing Voltage Load Bus Fault Disturbance/Outage Voltage Bus Voltage Bus Load Bus Frequency Cycles Remedial Action (% change) (absolute value) (% change) (Hz) Comments N-1 305 LaGrande 52 Mvar 230 kV MSC Wjohn Dy 138 Humboldt1 50 Wjohn Dy 138 Arapasub 115 Stable & 3 Cy 3PH Hemingway-Grassland 500 kV 305 Peterson 31.7 Mvar 230 kV MSC -8.5% 0.888 -8.5% 59.926 Damped Hemingway 500 kV N-1 Wjohn Dy 138 Humboldt1 50 Wjohn Dy 138 Arapasub 115 Stable & 3 Cy 3PH Hemingway-Summer Lake 500 kV None -9.0% 0.893 -9.0% 59.927 Damped Hemingway 500 kV N-1 Cedarhil 500 Big Sprg 120 Bowmont 138 Hipln_g 0.6 Stable & 3 Cy 3PH Hemingway-Midpoint 500 kV None -5.8% 0.908 -5.5% 59.920 Damped Midpoint 500 kV N-1 123 Midpoint 500 kV 200 Mvar MSC Ft Crk1 34.5 Humboldt1 50 Amps 69 Hipln_g 0.6 Stable & 3 Cy 3PH Hemingway-Populus 500 kV 243 Borah 345 kV 175 Mvar MSC -6.8% 0.901 -5.5% 59.845 Damped Populus 500 kV Breaker Failure Hemingway-Grassland 500 kV 305 LaGrande 52 Mvar 230 kV MSC Wjohn Dy 138 Humboldt1 50 Wjohn Dy 138 Lgpr St1 13.8 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr 305 Peterson 31.7 Mvar 230 kV MSC -12.2% 0.885 -12.2% 59.893 Damped Hemingway 500 kV Breaker Failure Hemingway-Summer Lake 500 kV Wjohn Dy 138 Humboldt1 50 Wjohn Dy 138 Helscyn1 14.4 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr None -11.4% 0.892 -11.4% 59.897 Damped Hemingway 500 kV Breaker Failure Hemingway-Midpoint 500 kV Wjohn Dy 138 Humboldt1 50 Wjohn Dy 138 Lgpr St1 13.8 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr None -12.7% 0.884 -12.7% 59.892 Damped Hemingway 500 kV Breaker Failure Hemingway-Populus 500 kV 123 Midpoint 500 kV 200 Mvar MSC Wjohn Dy 138 Humboldt1 50 Wjohn Dy 138 Rd_Nixon 20 Stable & 3/10 Cy SLG Hemingway 500/230 kV Xfmr 243 Borah 345 kV 175 Mvar MSC -7.3% 0.901 -7.3% 59.886 Damped Hemingway 500 kV Breaker Failure Midpoint-Hemingway 500 kV Freeport 120 Humboldt1 50 Freeport 120 Bliss 3 13.8 Stable & 3/10 Cy SLG Midpoint 500/345 kV Xfmr None -5.6% 0.888 -5.6% 59.913 Damped Midpoint 500 kV Open Midpoint-Borah 500kV Page 605 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt HOT SPR_500.0 (40553) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt HOT SPR_500.0 (40553) #s BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 Page 606 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOKING_500.0 (41007) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 109.8 MVR BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 Page 607 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 Page 608 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BYPASS SeriesCap MIDPOINT_500.0 (60240) TO MIDHEM11_500.0 (61988) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 Bus: Alvey 500 kV OPEN Bus ALVEY_500.0 (40051) Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV OPEN Bus KEELER_500.0 (40601) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Page 609 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV + RAS OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Brady-Antelope 230 kV + RAS OPEN Bus MLCK PHA_230.0 (62355) N-1: Brady-Antelope 230 kV + RAS OPEN Shunt AMPS_ 69.0 (65026) #1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Broadview-Garrison #1 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Cal Sub 120 kV Phase Shifter OPEN Transformer CAL SUB_120.0 (64025) TO CAL S PS_120.0 (64023) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 Page 610 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 2 N-1: Harry Allen 345 kV Phase Shifter OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Hatwai 500/230 kV Xfmr OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Hilltop 230 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 0 MVR N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 Page 611 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Pinto-Four Corner 345 kV OPEN Shunt PINTO_138.0 (66230) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 2_ 13.8 (66228) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 3_ 13.8 (66229) #1 N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine POPULUS_500.0 (67794) TO CEDARHIL_500.0 (60159) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine CEDARHIL_500.0 (60159) TO HEMINWAY_500.0 (60155) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Red Butte-Harry Allen 345 kV OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Red Butte-Harry Allen 345 kV OPEN Shunt GONDER1_230.0 (64205) #v N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 Page 612 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS CLOSE Shunt GARRISON_500.0 (40459) #r N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR1EAST_500.0 (40451) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN1_500.0 (62013) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR2EAST_500.0 (40453) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN2_500.0 (62012) N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT2_ 13.8 (62333) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT1_ 13.8 (62332) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS TAFT_500.0 (41057) TO -186 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS BZ EGALL_ 50.0 (62348) TO 20.4 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS JACKRABB_ 50.0 (62349) TO 19.7 MVR N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 Page 613 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PINTO_138.0 (66230) TO 64 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS YORKCANY_115.0 (12091) TO 15 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS DURANGO_115.0 (79023) TO 40 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PEIGAN 4_240.0 (54165) TO 0 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Bus IMNAHA_230.0 (60278) N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) Page 614 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) Page 615 of 776 Appendix I - 16la1sa_3400idnw_nv Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #s N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 616 of 776 Appendix J 16la1sa_3400idnw_N_Path24 Base Case (PG&E-Sierra, Path 24) Page 617 of 776 Appendix J – 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Figure J1: 16la1sa_3400idnw_Path24 Base Case Pre-Contingency 1.08 puMALIN-291.7 Mvar 0.0 Mvar 0.0 Mvar -175.1 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -292.3 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -868.5 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 460.2 Mvar 1.08 puPONDROSA -287.5 Mvar 2 7 5 M W - 2 1 4 M v a r 2 3 8 M W - 2 5 7 M v a r 2 5 3 M W - 1 5 7 M v a r 409 MW -34 Mvar 93 MW -74 Mvar 85 MW -79 Mvar 1369 MW 129 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.2 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.6 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.8 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.0 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.7 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -289.1 Mvar 1.09 puMARION -469.8 Mvar 1 5 4 M W 4 2 M v a r 7 0 1 M W - 1 5 6 M v a r 77 MW -14 Mvar 77 MW -15 Mvar 544 MW 5 Mvar 754 MW -82 Mvar 21 MW 88 Mvar 478 MW -47 Mvar 581 MW -102 Mvar 1099 MW -274 Mvar 103 MW -143 Mvar 1170 MW -82 Mvar 1518 MW 173 Mvar 2 2 3 M W - 3 2 M v a r 1520 MW 97 Mvar 800 MW -83 Mvar 394 MW 1 Mvar 425 MW -98 Mvar 442 MW -105 Mvar 96 MW -32 Mvar 1.05 puANTICLIN 639 MW 39 Mvar 638 MW 39 Mvar 701 MW -71 Mvar 693 MW -110 Mvar 420 MW -7 Mvar 800 MW -83 Mvar 230 MW -76 Mvar 424 MW -16 Mvar 639 MW -81 Mvar 348 MW 13 Mvar 456 MW -97 Mvar 494 MW -104 Mvar 1451 MW 158 Mvar 1194 MW -164 Mvar 327 MW -370 Mvar 618 MW -42 Mvar 154 MW -40 Mvar 196 MW -22 Mvar 168 MW -18 Mvar 31 MW 4 Mvar 74 MW -15 Mvar 1 2 1 M W - 4 9 M v a r 65 MW -39 Mvar 287 MW -58 Mvar 163 MW -66 Mvar 152 MW -45 Mvar 161 MW -42 Mvar 162 MW -45 Mvar 5 0 M W 9 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.2 Mvar 1.03 puONTARIO 74 MW -15 Mvar 38 MW -17 Mvar 117 MW -22 Mvar 2 2 8 M W - 1 9 M v a r 202 MW -16 Mvar 122 MW 3 Mvar 12 MW 13 Mvar 12 MW 13 Mvar 13 MW 13 Mvar 10 MW 24 Mvar 54 MW 5 Mvar 69 MW 7 Mvar 1 2 8 M W 7 1 M v a r 1 2 8 M W 6 7 M v a r 621 MW -157 Mvar 1250 MW -322 Mvar 614 MW -80 Mvar 418 MW -76 Mvar 299 MW 40 Mvar 277 MW -9 Mvar 247 MW 42 Mvar 231 MW -19 Mvar 227 MW -18 Mvar 349 MW 2 Mvar 357 MW 1 Mvar 587 MW -48 Mvar 3 5 M W 2 4 M v a r 886 MW -74 Mvar 2 5 1 M W - 3 7 M v a r 2 3 7 M W - 1 8 M v a r 9 1 3 M W - 2 0 9 M v a r 914 MW -282 Mvar ID-NW = 3400 MW Grassland = 1262 MW Summer Lake = 1369 MW Lolo = 228 MW Walla Walla = 304 MW LaGrande = 196 MW Midpoint West = 3279 MW Borah West = 3514 MW Idaho-Sierra = 223 MW N of John Day = -152 MW COI = 1347 MW PDCI = 1100 MW ID-MT = 254 MW W of McNary = 1968 MW W of Slatt = 2965 MW Alturas Project = -122 MW Path C = 698 MW Montana Southeast = -599 MW TOT 2B1 = 561 MW TOT 2C = 578 MW 1345 MW -175 Mvar 15 MW -46 Mvar 207 MW -79 Mvar 93 MW -3 Mvar 257 M W 139 M v a r 3 3 8 M W - 2 7 4 M v a r 1 2 6 2 M W - 3 0 9 M v a r 1312 MW 52 Mvar Page 618 of 776 Appendix J – 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Figure J2: 16la1sa_3400idnw_Path24 Base Case after the contingency BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV 1.09 puMALIN-294.2 Mvar 0.0 Mvar 0.0 Mvar -176.7 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -294.4 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -863.8 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 458.7 Mvar 1.08 puPONDROSA -286.7 Mvar 4 6 3 M W - 2 7 1 M v a r 4 3 2 M W - 3 2 0 M v a r 1 2 3 M W 8 6 M v a r 0 MW -37 Mvar 136 MW -2 Mvar 116 MW 17 Mvar 0 MW 0 Mvar 1.04 puHEMINWAY 1.08 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE -285.7 Mvar 1.06 pu GRASSLND 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON -284.6 Mvar 1.01 puROUNDUP COLD SPR 1.02 puWALLULA 0.0 Mvar 1.08 puHANFORD 0.0 Mvar 1.06 puCDR SPRG 1.08 puBUCKLEY 0.99 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.00 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.00 puTALBOT QUARTZTP 1.01 puWALA AVA 1.01 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 0.0 Mvar 125.4 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY -151.5 Mvar 1.07 puLIT GOOS 1.02 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.10 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 188.7 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.04 puIDAHO-NV 1.03 puKINPORT 184.8 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 221.3 Mvar 221.3 Mvar -285.7 Mvar 1.08 puMARION -465.1 Mvar 3 9 2 M W - 2 3 M v a r 9 3 8 M W - 2 0 5 M v a r 329 MW -63 Mvar 330 MW -63 Mvar 541 MW -13 Mvar 829 MW -99 Mvar 148 MW -222 Mvar 647 MW -126 Mvar 678 MW -99 Mvar 1476 MW -454 Mvar 31 MW -59 Mvar 871 MW 22 Mvar 1321 MW 120 Mvar 3 3 5 M W - 2 3 M v a r 1322 MW -5 Mvar 703 MW -78 Mvar 182 MW -7 Mvar 400 MW -84 Mvar 415 MW -90 Mvar 39 MW 87 Mvar 1.05 puANTICLIN 625 MW 29 Mvar 624 MW 29 Mvar 659 MW -44 Mvar 652 MW -81 Mvar 417 MW 31 Mvar 703 MW -78 Mvar 199 MW -87 Mvar 415 MW -11 Mvar 635 MW -75 Mvar 317 MW 6 Mvar 432 MW -86 Mvar 469 MW -92 Mvar 1385 MW 128 Mvar 1138 MW -145 Mvar 378 MW -368 Mvar 738 MW -83 Mvar 205 MW -67 Mvar 249 MW -34 Mvar 223 MW -19 Mvar 26 MW 6 Mvar 79 MW -21 Mvar 1 7 0 M W - 8 7 M v a r 105 MW -64 Mvar 354 MW -88 Mvar 182 MW -80 Mvar 171 MW -60 Mvar 181 MW -56 Mvar 181 MW -60 Mvar 1 2 6 M W - 3 M v a r HORSEFLT 1.02 puBOISEBCH 0.0 Mvar -78.5 Mvar 1.02 puONTARIO 79 MW -21 Mvar 50 MW -23 Mvar 165 MW -47 Mvar 2 9 8 M W - 1 9 M v a r 256 MW 8 Mvar 79 MW 5 Mvar 27 MW -12 Mvar 27 MW -12 Mvar 27 MW -13 Mvar 32 MW -25 Mvar 84 MW 6 Mvar 108 MW 9 Mvar 1 2 3 M W 5 6 M v a r 1 2 3 M W 5 3 M v a r 742 MW -168 Mvar 1265 MW -335 Mvar 651 MW -98 Mvar 470 MW -91 Mvar 328 MW 31 Mvar 305 MW -16 Mvar 273 MW 33 Mvar 260 MW -31 Mvar 256 MW -31 Mvar 390 MW -15 Mvar 399 MW -16 Mvar 672 MW -90 Mvar 9 7 M W - 4 M v a r 1119 MW -204 Mvar 4 3 0 M W - 1 0 3 M v a r 4 2 9 M W - 8 5 M v a r 0 M W 0 M v a r 0 MW 0 Mvar ID-NW = 2857 MW Grassland = 1885 MW Summer Lake = 0 MW Lolo = 298 MW Walla Walla = 377 MW LaGrande = 249 MW Midpoint West = 2811 MW Borah West = 3155 MW Idaho-Sierra = 335 MW N of John Day = 51 MW COI = 1014 MW PDCI = 1100 MW ID-MT = 299 MW W of McNary = 2051 MW W of Slatt = 3632 MW Alturas Project = -166 MW Path C = 475 MW Montana Southeast = -650 MW TOT 2B1 = 616 MW TOT 2C = 658 MW 0 MW 0 Mvar 170 MW 40 Mvar 210 MW -92 Mvar 98 MW -16 Mvar 247 M W 108 M v a r 3 7 7 M W - 2 6 9 M v a r 1 8 8 5 M W - 1 0 3 4 M v a r 2005 MW 747 Mvar Page 619 of 776 Appendix J – 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Figure J3: 16la1sa_3400idnw_Path24 Base Case after the contingency N-1: Robinson-Harry Allen 500 kV 1.08 puMALIN-290.9 Mvar 0.0 Mvar 0.0 Mvar -174.7 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.6 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY -866.6 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 457.4 Mvar 1.08 puPONDROSA -286.7 Mvar 2 8 9 M W - 2 1 3 M v a r 2 5 2 M W - 2 5 6 M v a r 2 4 8 M W - 1 6 5 M v a r 404 MW -43 Mvar 97 MW -78 Mvar 89 MW -83 Mvar 1392 MW 138 Mvar 1.04 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -288.9 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.3 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.2 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -153.7 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 187.9 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.02 puKINPORT 183.6 Mvar 1.07 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar -288.9 Mvar 1.09 puMARION -469.2 Mvar 1 6 4 M W 4 3 M v a r 7 1 1 M W - 1 5 5 M v a r 88 MW -11 Mvar 88 MW -11 Mvar 544 MW 3 Mvar 757 MW -83 Mvar 17 MW 95 Mvar 482 MW -50 Mvar 585 MW -100 Mvar 1112 MW -280 Mvar 103 MW -139 Mvar 1205 MW -77 Mvar 1522 MW 185 Mvar 1 4 3 M W - 3 0 M v a r 1524 MW 111 Mvar 796 MW -78 Mvar 434 MW 13 Mvar 416 MW -95 Mvar 432 MW -101 Mvar 105 MW -25 Mvar 1.05 puANTICLIN 637 MW 39 Mvar 636 MW 39 Mvar 692 MW -69 Mvar 684 MW -107 Mvar 417 MW -8 Mvar 796 MW -78 Mvar 227 MW -76 Mvar 422 MW -15 Mvar 637 MW -80 Mvar 344 MW 14 Mvar 446 MW -95 Mvar 485 MW -102 Mvar 1445 MW 160 Mvar 1186 MW -159 Mvar 330 MW -370 Mvar 623 MW -43 Mvar 157 MW -41 Mvar 199 MW -23 Mvar 171 MW -18 Mvar 30 MW 4 Mvar 74 MW -16 Mvar 1 2 4 M W - 5 1 M v a r 68 MW -40 Mvar 291 MW -60 Mvar 164 MW -67 Mvar 153 MW -46 Mvar 162 MW -43 Mvar 163 MW -46 Mvar 5 4 M W 8 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.0 Mvar 1.03 puONTARIO 74 MW -16 Mvar 38 MW -17 Mvar 120 MW -23 Mvar 2 3 2 M W - 1 9 M v a r 205 MW -15 Mvar 120 MW 3 Mvar 9 MW 13 Mvar 9 MW 13 Mvar 10 MW 14 Mvar 7 MW 25 Mvar 56 MW 5 Mvar 71 MW 7 Mvar 1 3 0 M W 7 1 M v a r 1 3 0 M W 6 8 M v a r 626 MW -156 Mvar 1250 MW -322 Mvar 616 MW -81 Mvar 421 MW -77 Mvar 301 MW 40 Mvar 279 MW -9 Mvar 248 MW 42 Mvar 233 MW -19 Mvar 229 MW -19 Mvar 352 MW 1 Mvar 360 MW 0 Mvar 593 MW -51 Mvar 3 9 M W 2 2 M v a r 895 MW -78 Mvar 2 6 7 M W - 3 8 M v a r 2 5 1 M W - 1 8 M v a r 9 3 9 M W - 2 1 5 M v a r 940 MW -291 Mvar ID-NW = 3454 MW Grassland = 1282 MW Summer Lake = 1392 MW Lolo = 232 MW Walla Walla = 308 MW LaGrande = 199 MW Midpoint West = 3338 MW Borah West = 3491 MW Idaho-Sierra = 143 MW N of John Day = -137 MW COI = 1447 MW PDCI = 1100 MW ID-MT = 257 MW W of McNary = 1974 MW W of Slatt = 2991 MW Alturas Project = -160 MW Path C = 690 MW Montana Southeast = -601 MW TOT 2B1 = 583 MW TOT 2C = 618 MW 1367 MW -187 Mvar 21 MW -41 Mvar 206 MW -80 Mvar 92 MW -4 Mvar 259 M W 139 M v a r 3 4 0 M W - 2 7 3 M v a r 1 2 8 2 M W - 3 3 7 M v a r 1333 MW 65 Mvar Page 620 of 776 Appendix J – 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Figure J4: 16la1sa_3400idnw_Path24 Base Case after the contingency N-2: Round Mtn-Table Mtn #1 & #2 500 kV 1.08 puMALIN-287.8 Mvar 0.0 Mvar 0.0 Mvar -172.8 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -288.4 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY -864.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 467.7 Mvar 1.07 puPONDROSA -286.0 Mvar 2 7 1 M W - 1 8 4 M v a r 2 0 3 M W - 2 2 4 M v a r 2 6 6 M W - 1 6 1 M v a r 423 MW -36 Mvar 433 MW -88 Mvar 384 MW -86 Mvar 1316 MW 136 Mvar 1.05 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.08 puMCNARY 1.09 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE -289.3 Mvar 1.08 pu GRASSLND 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON -288.9 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.08 puCDR SPRG 1.09 puBUCKLEY 1.03 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.04 puBROWNLEE 0.0 Mvar 129.4 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -154.0 Mvar 1.08 puLIT GOOS 1.04 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL 0.0 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 189.9 Mvar 1.09 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.03 puKINPORT 184.6 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.06 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.9 Mvar 220.9 Mvar -289.2 Mvar 1.09 puMARION -468.9 Mvar 1 3 7 M W 6 0 M v a r 6 8 5 M W - 1 3 9 M v a r 60 MW 7 Mvar 60 MW 7 Mvar 545 MW 5 Mvar 750 MW -78 Mvar 31 MW 76 Mvar 468 MW -36 Mvar 573 MW -96 Mvar 1074 MW -247 Mvar 105 MW -149 Mvar 1116 MW -80 Mvar 1480 MW 137 Mvar 2 5 8 M W - 2 7 M v a r 1482 MW 50 Mvar 776 MW -94 Mvar 361 MW -15 Mvar 415 MW -99 Mvar 431 MW -105 Mvar 65 MW -56 Mvar 1.05 puANTICLIN 638 MW 33 Mvar 637 MW 34 Mvar 683 MW -67 Mvar 675 MW -105 Mvar 408 MW 14 Mvar 776 MW -94 Mvar 230 MW -78 Mvar 419 MW -16 Mvar 636 MW -80 Mvar 341 MW 3 Mvar 446 MW -98 Mvar 484 MW -106 Mvar 1442 MW 140 Mvar 1188 MW -171 Mvar 321 MW -368 Mvar 609 MW -34 Mvar 149 MW -36 Mvar 191 MW -20 Mvar 163 MW -16 Mvar 31 MW 4 Mvar 74 MW -15 Mvar 1 1 6 M W - 4 4 M v a r 61 MW -36 Mvar 280 MW -54 Mvar 161 MW -65 Mvar 150 MW -44 Mvar 159 MW -41 Mvar 160 MW -43 Mvar 4 2 M W 1 3 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.9 Mvar 1.04 puONTARIO 74 MW -15 Mvar 36 MW -16 Mvar 112 MW -19 Mvar 2 2 1 M W - 1 8 M v a r 197 MW -17 Mvar 125 MW -0 Mvar 16 MW 10 Mvar 16 MW 10 Mvar 18 MW 11 Mvar 14 MW 21 Mvar 51 MW 7 Mvar 65 MW 10 Mvar 1 2 7 M W 6 7 M v a r 1 2 7 M W 6 3 M v a r 612 MW -150 Mvar 1247 MW -321 Mvar 609 MW -77 Mvar 412 MW -72 Mvar 295 MW 43 Mvar 273 MW -6 Mvar 243 MW 45 Mvar 227 MW -16 Mvar 223 MW -15 Mvar 343 MW 6 Mvar 351 MW 6 Mvar 576 MW -39 Mvar 2 9 M W 2 7 M v a r 870 MW -57 Mvar 2 4 6 M W - 4 M v a r 2 0 2 M W 1 5 M v a r 8 5 0 M W - 1 5 1 M v a r 851 MW -216 Mvar ID-NW = 3287 MW Grassland = 1223 MW Summer Lake = 1316 MW Lolo = 221 MW Walla Walla = 296 MW LaGrande = 191 MW Midpoint West = 3156 MW Borah West = 3424 MW Idaho-Sierra = 258 MW N of John Day = -162 MW COI = 1202 MW PDCI = 1100 MW ID-MT = 245 MW W of McNary = 1958 MW W of Slatt = 2919 MW Alturas Project = -88 MW Path C = 609 MW Montana Southeast = -582 MW TOT 2B1 = 586 MW TOT 2C = 614 MW 1294 MW -126 Mvar 11 MW -57 Mvar 208 MW -80 Mvar 93 MW -4 Mvar 255 M W 130 M v a r 3 3 5 M W - 2 7 1 M v a r 1 2 2 3 M W - 2 4 6 M v a r 1269 MW 35 Mvar Page 621 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr No Violations BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr No Violations BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.0 150.0 100.7% 180.0 83.9% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.1 150.0 101.4% 180.0 84.5% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 154.5 150.0 103.0% 180.0 85.9% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.6 150.0 100.4% 180.0 83.6% BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.5 150.0 102.3% 180.0 85.3% BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.3% 180.0 83.6% BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.3 150.0 100.2% 180.0 83.5% BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.1 150.0 100.1% 180.0 83.4% BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV No Violations BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV No Violations BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations Page 622 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.0 150.0 100.7% 180.0 83.9% BF 4542 Paul-Napavine 500 kV & Center G1 CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.8 150.0 100.5% 180.0 83.8% BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 193.9 267.0 254.0 105.1% 307.0 87.0% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4708 Hatwai 500 kV Bus CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.5 150.0 100.4% 180.0 83.6% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.1 150.0 100.7% 180.0 83.9% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.7 150.0 100.5% 180.0 83.7% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.5 150.0 101.0% 180.0 84.2% BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 174.4 150.0 116.3% 180.0 96.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 52.0 50.0 103.9% 55.0 94.5% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 324.5 300.0 108.2% 370.0 87.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 324.5 300.0 108.2% 370.0 87.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 321.4 315.0 102.0% 394.0 81.6% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 320.8 315.0 101.8% 394.0 81.4% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 428.7 415.7 103.1% 483.5 88.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1408.3 2211.8 2000.1 110.6% 3000.0 73.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1428.1 2187.8 2000.1 109.4% 3000.0 72.9% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 173.8 150.0 115.9% 180.0 96.6% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 52.5 50.0 105.1% 55.0 95.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 322.6 300.0 107.5% 370.0 87.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 322.6 300.0 107.5% 370.0 87.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 320.1 315.0 101.6% 394.0 81.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 319.5 315.0 101.4% 394.0 81.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 427.6 415.7 102.9% 483.5 88.4% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1408.3 2207.0 2000.1 110.3% 3000.0 73.6% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1428.1 2177.7 2000.1 108.9% 3000.0 72.6% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.9 150.0 101.3% 180.0 84.4% BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.8 150.0 102.6% 180.0 85.5% BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.7 150.0 100.4% 180.0 83.7% BF 5018 Ashe-Slatt & Slatt-John Day 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.2% 180.0 83.5% BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.3 150.0 100.2% 180.0 83.5% BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations Page 623 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.2 150.0 100.1% 180.0 83.4% BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr FRANKLIN (40443) -> FRANKL E (40440) CKT 1 at FRANKLIN Branch MVA 193.9 266.7 254.0 105.0% 307.0 86.9% BF 5214 Low Mon-McNary & Calpine PH 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.3 150.0 100.2% 180.0 83.5% BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.5 150.0 100.3% 180.0 83.6% BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 170.6 150.0 113.7% 180.0 94.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 320.3 300.0 106.8% 370.0 86.6% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 320.3 300.0 106.8% 370.0 86.6% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 318.4 315.0 101.1% 394.0 80.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 317.8 315.0 100.9% 394.0 80.7% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 86.7 116.1 112.0 103.6% 146.7 79.1% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1500.7 2315.3 1732.1 133.7% 2338.3 99.0% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 422.8 415.7 101.7% 483.5 87.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.992 0.927 6.55% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.991 0.930 6.16% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr AMPS (65025) % Δ Volts 0.991 0.940 5.15% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 172.8 150.0 115.2% 180.0 96.0% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 50.8 50.0 101.7% 55.0 92.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 322.6 300.0 107.5% 370.0 87.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 322.6 300.0 107.5% 370.0 87.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 320.0 315.0 101.6% 394.0 81.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 319.4 315.0 101.4% 394.0 81.1% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 425.9 415.7 102.5% 483.5 88.1% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1408.3 2267.4 2000.1 113.4% 3000.0 75.6% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1428.1 2240.5 2000.1 112.0% 3000.0 74.7% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 171.9 150.0 114.6% 180.0 95.5% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 50.1 50.0 100.1% 55.0 91.0% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 311.4 300.0 103.8% 370.0 84.2% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 311.4 300.0 103.8% 370.0 84.2% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 424.7 415.7 102.2% 483.5 87.9% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr CEDARHIL (60159) -> CEDHEM21 (61992) CKT 2 at CEDHEM21 Branch Amp 1624.5 2393.0 2309.4 103.6% 3464.1 69.1% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr POPULUS (67794) -> POPCED21 (61963) CKT 2 at POPULUS Branch Amp 1631.1 2368.4 2309.4 102.6% 3464.1 68.4% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 157.5 150.0 105.0% 180.0 87.5% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 319.5 300.0 106.5% 370.0 86.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 319.5 300.0 106.5% 370.0 86.3% Page 624 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 316.7 315.0 100.6% 394.0 80.4% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 316.2 315.0 100.4% 394.0 80.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1278.3 2368.6 1732.1 136.7% 2338.3 101.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1163.5 1867.7 1701.6 109.8% 2108.6 88.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1147.8 1849.5 1650.1 112.1% 2227.4 83.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1153.7 1862.0 1492.7 124.7% 2264.2 82.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PTRSNFUR (62386) % Δ Volts 0.992 0.940 5.24% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.991 0.941 5.05% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 167.4 150.0 111.6% 180.0 93.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 336.6 300.0 112.2% 370.0 91.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 336.6 300.0 112.2% 370.0 91.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 329.7 315.0 104.7% 394.0 83.7% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 328.9 315.0 104.4% 394.0 83.5% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 86.7 117.8 112.0 105.2% 146.7 80.3% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 416.0 415.7 100.1% 483.5 86.1% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1163.5 1784.5 1701.6 104.9% 2108.6 84.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1147.8 1769.3 1650.1 107.2% 2227.4 79.4% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1153.7 1781.6 1492.7 119.4% 2264.2 78.7% BF Lolo 230kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.3 150.0 100.9% 180.0 84.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 171.0 150.0 114.0% 180.0 95.0% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 50.3 50.0 100.6% 55.0 91.5% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 320.1 300.0 106.7% 370.0 86.5% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 320.1 300.0 106.7% 370.0 86.5% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 318.2 315.0 101.0% 394.0 80.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 317.7 315.0 100.8% 394.0 80.6% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 86.7 114.8 112.0 102.5% 146.7 78.2% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1500.7 2263.0 1732.1 130.7% 2338.3 96.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 423.6 415.7 101.9% 483.5 87.6% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFUR (62386) % Δ Volts 0.992 0.930 6.25% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.991 0.932 5.95% BF PGE Grassland-Coyote 500 kV & Carty Gas Project No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.3 150.0 100.9% 180.0 84.1% Bus: Alvey 500 kV No Violations Bus: Bell BPA 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.7 150.0 101.8% 180.0 84.8% Bus: Buckley 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.6 150.0 100.4% 180.0 83.7% Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 174.4 150.0 116.2% 180.0 96.9% Bus: Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 52.4 50.0 104.9% 55.0 95.4% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 324.6 300.0 108.2% 370.0 87.7% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 324.6 300.0 108.2% 370.0 87.7% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 321.5 315.0 102.1% 394.0 81.6% Page 625 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 320.8 315.0 101.9% 394.0 81.4% Bus: Summer Lake 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 428.6 415.7 103.1% 483.5 88.6% Bus: Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1408.3 2210.7 2000.1 110.5% 3000.0 73.7% Bus: Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1428.1 2186.8 2000.1 109.3% 3000.0 72.9% N-1: Allston-Keeler 500 kV No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.3% 180.0 83.6% N-1: Bell-Taft 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.6 150.0 101.8% 180.0 84.8% N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.1 150.0 100.7% 180.0 83.9% N-1: Broadview-Garrison #1 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.2 150.0 100.2% 180.0 83.5% N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.5 150.0 100.3% 180.0 83.6% N-1: Cal Sub 120 kV Phase Shifter No Violations N-1: Captain Jack-Olinda 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.9 150.0 102.6% 180.0 85.5% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.3% 180.0 83.6% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV No Violations N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV No Violations N-1: Dworshak-Taft 500 kV No Violations Page 626 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.6 150.0 100.4% 180.0 83.6% N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.8 150.0 100.5% 180.0 83.8% N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.3% 180.0 83.6% N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.5 150.0 100.3% 180.0 83.6% N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 347.8 315.0 110.4% 394.0 88.3% N-1: Harry Allen 345 kV Phase Shifter PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 346.6 315.0 110.0% 394.0 88.0% N-1: Harry Allen 345 kV Phase Shifter CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.4 150.0 102.3% 180.0 85.2% N-1: Hatwai 500/230 kV Xfmr No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.7 150.0 100.5% 180.0 83.7% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV No Violations N-1: Hells Canyon-Walla Walla 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.2 150.0 101.5% 180.0 84.6% N-1: Hemingway-Grassland 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 170.3 150.0 113.5% 180.0 94.6% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 318.8 300.0 106.3% 370.0 86.2% N-1: Hemingway-Grassland 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 318.8 300.0 106.3% 370.0 86.2% N-1: Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 317.3 315.0 100.7% 394.0 80.5% N-1: Hemingway-Grassland 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 316.7 315.0 100.6% 394.0 80.4% N-1: Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 86.7 117.2 112.0 104.6% 146.7 79.9% N-1: Hemingway-Grassland 500 kV BURNS (45029) -> BURSUM11 (90132) CKT 1 at BURNS Branch Amp 1500.7 2252.9 1732.1 130.1% 2338.3 96.4% N-1: Hemingway-Grassland 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 422.3 415.7 101.6% 483.5 87.4% N-1: Hemingway-Summer Lake 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 173.1 150.0 115.4% 180.0 96.1% N-1: Hemingway-Summer Lake 500 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 52.7 50.0 105.3% 55.0 95.7% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 322.4 300.0 107.5% 370.0 87.1% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 322.4 300.0 107.5% 370.0 87.1% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 319.9 315.0 101.5% 394.0 81.2% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 319.3 315.0 101.4% 394.0 81.0% N-1: Hemingway-Summer Lake 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 426.4 415.7 102.6% 483.5 88.2% N-1: Hemingway-Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1408.3 2215.7 2000.1 110.8% 3000.0 73.9% N-1: Hemingway-Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1428.1 2191.8 2000.1 109.6% 3000.0 73.1% N-1: Hill Top 345/230 Xfmr CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 178.7 150.0 119.2% 180.0 99.3% N-1: Hill Top 345/230 Xfmr DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 436.9 415.7 105.1% 483.5 90.4% N-1: Horse Hv-McNary 230 kV No Violations Page 627 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 349.2 300.0 116.4% 370.0 94.4% N-1: Huntington-Pinto-Four Corners 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 349.2 300.0 116.4% 370.0 94.4% N-1: Huntington-Pinto-Four Corners 345 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 154.3 150.0 102.9% 180.0 85.7% N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.1 150.0 100.1% 180.0 83.4% N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 52.2 50.0 104.5% 55.0 95.0% N-1: LaGrande-North Powder 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.9 150.0 100.6% 180.0 83.9% N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 164.2 150.0 109.5% 180.0 91.2% N-1: Malin-Round Mtn #1 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.8 150.0 101.9% 180.0 84.9% N-1: Malin-Round Mtn #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.0 150.0 102.0% 180.0 85.0% N-1: Malin-Summer Lake 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 154.5 150.0 103.0% 180.0 85.9% N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.2 150.0 100.1% 180.0 83.4% N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 167.2 150.0 111.5% 180.0 92.9% N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 306.7 300.0 102.2% 370.0 82.9% N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 306.7 300.0 102.2% 370.0 82.9% N-1: Midpoint-Hemingway 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 416.6 415.7 100.2% 483.5 86.2% N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations Page 628 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.3 150.0 100.9% 180.0 84.1% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV No Violations N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 346.2 300.0 115.4% 370.0 93.6% N-1: Pinto-Four Corner 345 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 346.2 300.0 115.4% 370.0 93.6% N-1: Pinto-Four Corner 345 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.7 150.0 102.5% 180.0 85.4% N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Populus-Cedar Hill-Hemingway 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 156.5 150.0 104.3% 180.0 86.9% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 318.1 300.0 106.0% 370.0 86.0% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 318.1 300.0 106.0% 370.0 86.0% N-1: Populus-Cedar Hill-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 315.7 315.0 100.2% 394.0 80.1% N-1: Populus-Cedar Hill-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 315.2 315.0 100.1% 394.0 80.0% N-1: Populus-Cedar Hill-Hemingway 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1278.3 2200.9 1732.1 127.1% 2338.3 94.1% N-1: Populus-Cedar Hill-Hemingway 500 kV BORPOP11 (61970) -> BORAH (60060) CKT 1 at BORAH Branch Amp 1163.5 1869.7 1701.6 109.9% 2108.6 88.7% N-1: Populus-Cedar Hill-Hemingway 500 kV BORPOP21 (61969) -> BORAH (60060) CKT 2 at BORAH Branch Amp 1147.8 1851.4 1650.1 112.2% 2227.4 83.1% N-1: Populus-Cedar Hill-Hemingway 500 kV POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1153.7 1863.9 1492.7 124.9% 2264.2 82.3% N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.6 347.6 315.0 110.3% 394.0 88.2% N-1: Red Butte-Harry Allen 345 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.6 346.4 315.0 110.0% 394.0 87.9% N-1: Red Butte-Harry Allen 345 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.5 150.0 102.4% 180.0 85.3% N-1: Robinson-Harry Allen 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 178.5 150.0 119.0% 180.0 99.2% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 304.4 300.0 101.5% 370.0 82.3% N-1: Robinson-Harry Allen 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 304.4 300.0 101.5% 370.0 82.3% N-1: Robinson-Harry Allen 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 438.4 415.7 105.5% 483.5 90.7% N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.1 150.0 101.4% 180.0 84.5% N-1: Roundup-Lagrande 230 kV HINES (61825) -> HINES (61826) CKT 1 at HINES Branch MVA 42.8 50.3 50.0 100.5% 55.0 91.4% N-1: Roundup-Lagrande 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.5 150.0 100.4% 180.0 83.6% N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.7 150.0 100.4% 180.0 83.7% N-1: Sigurd-Glen Canyon 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 307.6 300.0 102.5% 370.0 83.1% N-1: Sigurd-Glen Canyon 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 307.6 300.0 102.5% 370.0 83.1% N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV No Violations N-1: Table Mtn-Vaca Dixon 500 kV No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations Page 629 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.4 150.0 100.9% 180.0 84.1% N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.9 150.0 100.6% 180.0 83.8% N-2: Ashe-Slatt & McNary-John Day 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.0 150.0 100.0% 180.0 83.3% N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 154.6 150.0 103.1% 180.0 85.9% N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.3 150.0 100.2% 180.0 83.5% N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.3% 180.0 83.6% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV BRIDGER (60085) -> BRI3MI11 (61999) CKT 1 at BRIDGER Branch Amp 1066.1 1761.0 1600.0 110.1% 1840.0 95.7% N-2: Bridger-Populus #1 & #2 345 kV BRI3MI11 (61999) -> 3MIKNOLL (60084) CKT 1 at 3MIKNOLL Branch Amp 1066.1 1734.9 1650.1 105.1% 2227.4 77.9% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> POPBRI11 (61968) CKT 1 at BRIDGER Branch Amp 1019.3 1809.4 1492.7 121.2% 1849.2 97.8% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV POPBRI11 (61968) -> POPULUS (67790) CKT 1 at POPULUS Branch Amp 1007.9 1793.0 1650.1 108.7% 2227.6 80.5% N-2: Broadview-Garrison #1 & #2 500 kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.2 150.0 101.5% 180.0 84.6% N-2: Broadview-Garrison #1 & #2 500 kV + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 86.7 122.5 112.0 109.4% 146.7 83.5% N-2: Broadview-Garrison #1 & #2 500 kV + RAS ABSAROKE (62201) % Δ Volts 0.955 0.876 8.27% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLUMBUS (62015) % Δ Volts 0.978 0.902 7.77% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLBUSAT (62224) % Δ Volts 0.975 0.900 7.69% N-2: Broadview-Garrison #1 & #2 500 kV + RAS BGTMBERA (62250) % Δ Volts 1.009 0.935 7.33% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLRPLJE (62220) % Δ Volts 1.000 0.929 7.10% N-2: Broadview-Garrison #1 & #2 500 kV + RAS DUCKCR-R (62325) % Δ Volts 1.015 0.944 7.00% N-2: Broadview-Garrison #1 & #2 500 kV + RAS WILSALL (62019) % Δ Volts 1.036 0.965 6.85% N-2: Broadview-Garrison #1 & #2 500 kV + RAS WILSALL (62016) % Δ Volts 1.034 0.967 6.48% N-2: Broadview-Garrison #1 & #2 500 kV + RAS COLRPLJE (62205) % Δ Volts 1.000 0.936 6.40% N-2: Broadview-Garrison #1 & #2 500 kV + RAS CLYDE P (62108) % Δ Volts 1.026 0.965 5.95% N-2: Broadview-Garrison #1 & #2 500 kV + RAS THRRIVER (62331) % Δ Volts 1.033 0.979 5.23% N-2: Broadview-Garrison #1 & #2 500 kV + RAS KINGHILL (62170) % Δ Volts 1.045 0.991 5.17% N-2: Broadview-Garrison #1 & #2 500 kV + RAS STANFRDM (62231) % Δ Volts 1.033 0.980 5.13% N-2: Broadview-Garrison #1 & #2 500 kV + RAS BENCHLND (62230) % Δ Volts 1.029 0.977 5.05% N-2: Broadview-Garrison #1 & #2 500 kV + RAS UTICA (62238) % Δ Volts 1.029 0.977 5.05% N-2: Broadview-Garrison #1 & #2 500 kV + RAS MARTNSDA (62235) % Δ Volts 1.032 0.980 5.04% N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.8 150.0 101.8% 180.0 84.9% N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations Page 630 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV No Violations N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 315.6 300.0 105.2% 370.0 85.3% N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 315.6 300.0 105.2% 370.0 85.3% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 357.6 300.0 119.2% 370.0 96.7% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 357.6 300.0 119.2% 370.0 96.7% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO Branch MVA 290.6 364.3 315.0 115.7% 394.0 92.5% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO Branch MVA 290.6 362.8 315.0 115.2% 394.0 92.1% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 286.5 364.7 357.0 102.2% 415.9 87.7% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 286.5 364.7 357.0 102.2% 415.9 87.7% N-2: Double Palo Verde CR_NEST1 (54458) -> CBK 500 (50791) CKT 1 at CR_NEST1 Branch Amp 430.1 1107.8 1085.4 102.1% 1199.7 92.3% N-2: Double Palo Verde CHOLLA (14000) -> CHOSAG11 (14014) CKT 1 at CHOSAG11 Branch Amp 961.1 1054.8 1026.0 102.8% 1538.1 68.6% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 154.5 150.0 103.0% 180.0 85.8% N-2: Garrison-Taft #1 & #2 500 kV + RAS PLACIDLK (62344) % Δ Volts 1.026 0.962 6.24% N-2: Garrison-Taft #1 & #2 500 kV + RAS DIXON MV (40348) % Δ Volts 1.026 0.969 5.56% N-2: Garrison-Taft #1 & #2 500 kV + RAS RATTLE S (40867) % Δ Volts 1.025 0.970 5.37% N-2: Garrison-Taft #1 & #2 500 kV + RAS DIAMNDMT (62295) % Δ Volts 1.022 0.968 5.28% N-2: Garrison-Taft #1 & #2 500 kV + RAS SUPERRMT (62296) % Δ Volts 1.022 0.968 5.28% N-2: Garrison-Taft #1 & #2 500 kV + RAS TARKIO-R (62294) % Δ Volts 1.025 0.971 5.27% N-2: Garrison-Taft #1 & #2 500 kV + RAS ST REGIS (62297) % Δ Volts 1.020 0.967 5.20% N-2: Garrison-Taft #1 & #2 500 kV + RAS ALBERTON (62293) % Δ Volts 1.029 0.976 5.15% N-2: Garrison-Taft #1 & #2 500 kV + RAS HUSON-R (62300) % Δ Volts 1.032 0.980 5.04% N-2: Garrison-Taft #1 & #2 500 kV + RAS HAMLTNMT (62074) % Δ Volts 1.014 0.963 5.03% N-2: Garrison-Taft #1 & #2 500 kV + RAS HAUGEN (62298) % Δ Volts 1.018 0.967 5.01% N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.5 150.0 101.6% 180.0 84.7% N-2: Grassland-Coyote & Slatt - Longhorn 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.3 150.0 102.2% 180.0 85.2% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV No Violations N-2: Grizzly-Malin & Malin-Summer Lake 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 159.4 150.0 106.3% 180.0 88.5% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.5 150.0 100.3% 180.0 83.6% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 227.1 268.4 252.0 106.5% 271.1 99.0% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV TAUNTON (48425) -> SOTHELOT (48393) CKT 1 at TAUNTON Branch Amp 225.5 266.5 266.1 100.2% 1238.4 21.5% N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.5 150.0 101.7% 180.0 84.7% N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.3 150.0 100.2% 180.0 83.5% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.3 150.0 100.2% 180.0 83.5% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations Page 631 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV No Violations N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.1 150.0 100.7% 180.0 83.9% N-2: Malin-Round Mtn #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 176.0 150.0 117.4% 180.0 97.8% N-2: Malin-Round Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 302.3 300.0 100.8% 370.0 81.7% N-2: Malin-Round Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 302.3 300.0 100.8% 370.0 81.7% N-2: Malin-Round Mtn #1 & #2 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 426.1 415.7 102.5% 483.5 88.1% N-2: McNary-John Day & Rock Creek-John Day 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.1 150.0 100.1% 180.0 83.4% N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.2 150.0 100.1% 180.0 83.4% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.4 150.0 100.3% 180.0 83.5% N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 167.8 150.0 111.9% 180.0 93.2% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 307.5 300.0 102.5% 370.0 83.1% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 307.5 300.0 102.5% 370.0 83.1% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 417.6 415.7 100.5% 483.5 86.4% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 177.8 150.0 118.5% 180.0 98.8% N-2: Round Mtn-Table Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 302.3 300.0 100.8% 370.0 81.7% N-2: Round Mtn-Table Mtn #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 302.3 300.0 100.8% 370.0 81.7% N-2: Round Mtn-Table Mtn #1 & #2 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 424.6 415.7 102.1% 483.5 87.8% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 227.1 256.6 252.0 101.8% 271.1 94.7% N-2: Sickler-Schultz & Schultz-Vantage 500 kV No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 150.7 150.0 100.5% 180.0 83.7% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 284.2 302.1 300.0 100.7% 370.0 81.7% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 284.2 302.1 300.0 100.7% 370.0 81.7% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 384.8 433.6 415.7 104.3% 483.5 89.7% N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.6 150.0 101.8% 180.0 84.8% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 153.5 150.0 102.3% 180.0 85.3% N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 227.1 255.5 252.0 101.4% 271.1 94.2% Page 632 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.6 150.0 101.8% 180.0 84.8% N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 152.9 150.0 101.9% 180.0 85.0% N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS BENTNAVA (48039) -> TAUNTON (48425) CKT 1 at BENTNAVA Branch Amp 227.1 252.3 252.0 100.1% 271.1 93.1% N-2: Taft-Dworshak & Garrison-Taft #1 500kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 148.9 151.4 150.0 100.9% 180.0 84.1% N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 633 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 11L12 MERIDIAN-KLAM FALLS 500 KV+KFGEN2+ST 0.7 -854 0.70 -549 0.71 -1827 0.70 -399 0.70 -656 0.74 -1659 0.80 -1502 0.70 -960 BF 11L22 CAPT JACK-KLAM FALLS 500 KV+KFGEN2+ST 0.7 -854 0.70 -549 0.71 -1839 0.70 -400 0.70 -656 0.74 -1668 0.80 -1509 0.70 -960 BF 11R1 MERIDIAN-KLAM FALLS 500 KV & MERIDIAN 500/230 KV XFMR 0.7 -857 0.70 -550 0.70 -1883 0.70 -401 0.70 -660 0.73 -1709 0.80 -1555 0.70 -964 BF 11R6 MERIDIAN-DIXONVILLE 500 KV & MERIDIAN 500/230 KV XFMR 0.7 -857 0.70 -550 0.70 -1902 0.70 -401 0.70 -659 0.73 -1724 0.80 -1567 0.70 -963 BF 4003 HANFORD-VANTAGE & HANFORD CAPS 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -660 0.73 -1733 0.80 -1574 0.70 -964 BF 4019 CAPTJACK-MALIN #2 & MALIN 500/230 XFMR 0.7 -832 0.70 -551 0.70 -1921 0.70 -297 0.70 -658 0.73 -1737 0.80 -1576 0.70 -940 BF 4028 TAFT-DWORSHAK & TAFT REACTOR 500KV 0.7 -857 0.70 -550 0.70 -1859 0.70 -404 0.70 -656 0.74 -1687 0.80 -1533 0.70 -962 BF 4046 JOHN DAY-GRIZZLY #2 & GRIZZLY-MALIN #2 500 KV 0.7 -852 0.70 -548 0.70 -1878 0.70 -394 0.70 -655 0.73 -1711 0.80 -1560 0.70 -957 BF 4064 CAPTJACK-MALIN & MALIN-ROUND MTN #1 500 KV 0.7 -859 0.70 -550 0.70 -1933 0.70 -407 0.70 -660 0.73 -1751 0.80 -1590 0.70 -965 BF 4072 GRIZZLY-MALIN #2 & MALIN-ROUND MTN #2 500 KV 0.7 -851 0.70 -547 0.70 -1889 0.70 -392 0.70 -655 0.73 -1724 0.80 -1573 0.70 -955 BF 4095 LOW MON-HANFORD & HANFORD-WAUTOMA 500 KV 0.7 -857 0.70 -550 0.70 -1906 0.70 -404 0.70 -658 0.73 -1727 0.80 -1569 0.70 -963 BF 4104 ASHE-HANFORD & HANFORD-WAUTOMA 500 KV 0.7 -857 0.70 -550 0.70 -1900 0.70 -403 0.70 -659 0.73 -1728 0.80 -1572 0.70 -963 BF 4111 HOT SPRINGS-TAFT & TAFT-DWORSHAK 500 KV 0.7 -857 0.70 -550 0.70 -1864 0.70 -404 0.70 -656 0.74 -1690 0.80 -1536 0.70 -962 BF 4114 GARRISON-TAFT #1 +TAFT REACTOR 500KV 0.7 -855 0.70 -549 0.71 -1812 0.70 -403 0.70 -653 0.74 -1647 0.80 -1493 0.70 -960 BF 4119 GARRISON-TAFT #1 & TAFT-BELL 500KV + RAS 0.7 -850 0.70 -547 0.73 -1647 0.70 -400 0.70 -642 0.76 -1518 0.80 -1375 0.71 -952 BF 4131 SLATT-JOHN DAY & JOHN DAY-GRIZZLY #2 500 KV 0.7 -855 0.70 -549 0.70 -1894 0.70 -400 0.70 -657 0.73 -1728 0.80 -1574 0.70 -960 BF 4143 (OR 4134) JOHN DAY-GRIZZLY #1 & JOHN DAY CAPS 500 KV 0.7 -856 0.70 -549 0.70 -1904 0.70 -401 0.70 -658 0.73 -1726 0.80 -1569 0.70 -962 BF 4148 HOT SPRINGS-TAFT & GARRISON-TAFT #2 500 KV 0.7 -856 0.70 -549 0.71 -1845 0.70 -404 0.70 -654 0.74 -1669 0.80 -1510 0.70 -961 BF 4170 JOHN DAY-MARION & JOHN DAY CAPS 500 KV 0.7 -857 0.70 -550 0.70 -1904 0.70 -402 0.70 -658 0.73 -1727 0.80 -1570 0.70 -963 BF 4186 (OR 4582) MALIN-ROUND MTN 500 KV & MALIN 500/230 XFMR 0.7 -831 0.70 -550 0.70 -1917 0.70 -296 0.70 -657 0.73 -1741 0.80 -1583 0.70 -938 BF 4194 ROCK CK-JOHN DAY & BIG EDDY-JOHN DAY 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1732 0.80 -1574 0.70 -964 BF 4197 JOHN DAY-BIG EDDY #1 & JOHN DAY CAPS 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -660 0.73 -1735 0.80 -1575 0.70 -965 BF 4202 JOHN DAY-BIG EDDY#2 & BIG EDDY-OSTRANDER 500 KV 0.7 -858 0.70 -550 0.70 -1907 0.70 -403 0.70 -659 0.73 -1729 0.80 -1571 0.70 -964 BF 4231 MCNARY-LONGHORN 500 KV & MCNARY 500/230 KV XFMR 0.7 -858 0.70 -550 0.71 -1869 0.70 -405 0.70 -658 0.73 -1719 0.80 -1569 0.70 -964 BF 4234 MCNARY-LONGHORN & MCNARY-HERMCALP 500 KV 0.7 -855 0.70 -549 0.72 -1783 0.70 -403 0.70 -656 0.75 -1626 0.81 -1466 0.70 -961 BF 4247 LIT GOOS-LOW MON #2 & LOW MON-MCNARY 500 KV 0.7 -858 0.70 -550 0.70 -1908 0.70 -404 0.70 -659 0.73 -1730 0.80 -1572 0.70 -964 BF 4259 LIT GOOS-LOW MON #2 & LOW MON-HANFORD 500 KV 0.7 -857 0.70 -550 0.70 -1904 0.70 -404 0.70 -658 0.73 -1726 0.80 -1568 0.70 -963 BF 4268 MONROE-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1735 0.80 -1574 0.70 -964 BF 4276 ING500-CUSTERW 500 KV & CUSTERW 500/230 XFMR 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -659 0.73 -1736 0.80 -1575 0.70 -964 BF 4280 KEELER-PEARL & PEARL-MARION 500 KV 0.7 -859 0.70 -551 0.70 -1912 0.70 -406 0.70 -661 0.73 -1732 0.80 -1573 0.70 -966 BF 4280 KEELER-PEARL & PEARL-OSTRANDER 500 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1737 0.80 -1577 0.70 -965 BF 4287 PEARL-OSTRANDER 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.7 -858 0.70 -550 0.70 -1921 0.70 -404 0.70 -660 0.73 -1736 0.80 -1576 0.70 -964 BF 4293 SCHULTZ-RAVER & RAVER COVINGTON5 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 BF 4336 CHIEF JO-SICKLER 500 KV & SICKLER 500/230 XFMR 0.7 -858 0.70 -550 0.70 -1918 0.70 -405 0.70 -659 0.73 -1735 0.80 -1574 0.70 -964 BF 4336 SICKLER-SCHULTZ 500 KV & SICKLER 500/230 XFMR 0.7 -858 0.70 -550 0.70 -1918 0.70 -405 0.70 -659 0.73 -1735 0.80 -1574 0.70 -964 BF 4377 ASHE-MARION & MARION-ALVEY 500 KV 0.7 -855 0.70 -549 0.70 -1899 0.70 -400 0.70 -657 0.73 -1724 0.80 -1568 0.70 -960 BF 4386 BUCKLEY-MARION & MARION-SANTIAM 500 KV 0.7 -857 0.70 -550 0.70 -1901 0.70 -402 0.70 -658 0.73 -1727 0.80 -1570 0.70 -963 BF 4439 BIG EDDY-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.7 -858 0.70 -550 0.70 -1907 0.70 -403 0.70 -659 0.73 -1729 0.80 -1571 0.70 -964 BF 4442 BIG EDDY-OSTRANDER 500 KV & OSTRANDER-MCLOUGHLIN 230 KV 0.7 -858 0.70 -550 0.70 -1910 0.70 -404 0.70 -659 0.73 -1730 0.80 -1572 0.70 -964 BF 4448 KNIGHT-OSTRANDER & OSTRANDER-TROUTDALE 500 KV 0.7 -857 0.70 -550 0.70 -1905 0.70 -403 0.70 -659 0.73 -1727 0.80 -1569 0.70 -963 BF 4450 KNIGHT-OSTRANDER & OSTRANDER-PEARL 500 KV 0.7 -857 0.70 -550 0.70 -1908 0.70 -403 0.70 -659 0.73 -1729 0.80 -1571 0.70 -963 BF 4502 PAUL-ALLSTON & ALLSTON-KEELER 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1573 0.70 -964 BF 4510 PEARL-MARION 500 KV & PEARL 500/230 XFMR & PEARL CAPS 0.7 -859 0.70 -551 0.70 -1912 0.70 -406 0.70 -660 0.73 -1731 0.80 -1572 0.70 -966 BF 4526 CUSTERW-MONROE & MONROE-ECHO LAKE 500 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 BF 4530 RAVER-PAUL & PAUL-SATSOP 500 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -660 0.73 -1734 0.80 -1575 0.70 -965 BF 4540 PAUL-NAPAVINE & PAUL-SATSOP 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 BF 4542 PAUL-ALLSTON 500 KV & CENTER G2 0.7 -853 0.70 -548 0.72 -1766 0.70 -401 0.70 -654 0.75 -1600 0.81 -1441 0.70 -958 BF 4542 PAUL-NAPAVINE 500 KV & CENTER G1 0.7 -854 0.70 -548 0.72 -1778 0.70 -402 0.70 -654 0.75 -1611 0.81 -1450 0.70 -959 BF 4550 OLYMPIA-PAUL & PAUL-ALLSTON 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 BF 4554 OLYMPIA-PAUL 500 KV & TONO 500/115 XFMR 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -660 0.73 -1735 0.80 -1574 0.70 -965 BF 4572 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.7 -858 0.70 -550 0.71 -1880 0.70 -405 0.70 -659 0.73 -1722 0.80 -1570 0.70 -964 BF 4630 CEN FERRY-LIT GOOS #1 & LIT GOOS-LOW MON #1 500 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -404 0.70 -659 0.73 -1732 0.80 -1573 0.70 -964 Page 634 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BF 4652 TAFT-DWORSHAK & TAFT-HATWAI 500 KV + RAS 0.7 -856 0.70 -549 0.71 -1835 0.70 -404 0.70 -656 0.74 -1654 0.80 -1494 0.70 -962 BF 4672 MONROE-CHIEF JO 500 KV & MONROE CAPS 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1731 0.80 -1572 0.70 -964 BF 4676 LIT GOOS-LOW MON & LOW MON-ASHE 500 KV 0.7 -858 0.70 -550 0.70 -1924 0.70 -405 0.70 -659 0.73 -1737 0.80 -1575 0.70 -964 BF 4690 PAUL-ALLSTON 500 KV & ALLSTON 500/230 XFMR 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 BF 4708 HATWAI 500 KV BUS 0.7 -856 0.70 -549 0.70 -1846 0.70 -403 0.70 -654 0.74 -1677 0.80 -1520 0.70 -960 BF 4728 COULEE-CHIEF JO 500 KV & CHEIF JO 500/230 XFMR 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 BF 4775 CEN FERRY-LOW GRAN #1 & #2 500 KV 0.7 -855 0.70 -549 0.70 -1855 0.70 -403 0.70 -653 0.74 -1684 0.80 -1527 0.70 -959 BF 4776 HATWAI-LOW GRAN & LOW GRAN-CEN FERRY 500 KV 0.7 -856 0.70 -549 0.70 -1859 0.70 -403 0.70 -654 0.74 -1688 0.80 -1533 0.70 -960 BF 4870 JOHN DAY-BIG EDDY 500 KV & BIG EDDY 500/230 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -660 0.73 -1735 0.80 -1575 0.70 -965 BF 4888 ASHE-SLATT & CGS 500 KV 0.7 -852 0.70 -548 0.73 -1695 0.70 -400 0.70 -652 0.76 -1538 0.81 -1379 0.70 -956 BF 4891 LOW MON-ASHE & ASHE-SLATT 500 KV 0.7 -857 0.70 -550 0.70 -1898 0.70 -403 0.70 -658 0.73 -1725 0.80 -1569 0.70 -963 BF 4901 LOW MON-ASHE & ASHE-HANFORD 500 KV 0.7 -857 0.70 -550 0.70 -1887 0.70 -402 0.70 -659 0.73 -1723 0.80 -1571 0.70 -963 BF 4940 LOW MON-ASHE & ASHE-MARION 500 KV 0.7 -856 0.70 -549 0.70 -1895 0.70 -402 0.70 -657 0.73 -1721 0.80 -1564 0.70 -961 BF 4957 SUMMER L-MALIN & SUMMER L-HEMINGWAY 500 KV 0.7 -828 0.70 -535 0.72 -1429 0.70 -396 0.70 -615 0.73 -1530 0.81 -1607 0.72 -917 BF 4959 GRIZZLY-SUMMER L & SUMMER L-MALIN 500 KV 0.7 -830 0.70 -536 0.73 -1508 0.70 -397 0.70 -624 0.73 -1607 0.81 -1679 0.72 -921 BF 4996 CAPTJACK-MALIN #1 & #2 500 KV 0.7 -861 0.70 -551 0.70 -1932 0.70 -408 0.70 -661 0.73 -1745 0.80 -1582 0.70 -968 BF 5003 SLATT-BUCKLEY & SLATT-BOARDMAN 500 KV 0.7 -854 0.70 -548 0.70 -1883 0.70 -402 0.70 -655 0.73 -1735 0.80 -1585 0.70 -959 BF 5006 SLATT-LONGHORN & SLATT-GRASSLAND 500 KV 0.7 -852 0.70 -547 0.71 -1868 0.70 -402 0.70 -653 0.73 -1738 0.80 -1601 0.70 -956 BF 5015 ASHE-SLATT & SLATT-BUCKLEY 500 KV 0.7 -856 0.70 -549 0.70 -1900 0.70 -402 0.70 -657 0.73 -1733 0.80 -1577 0.70 -961 BF 5018 ASHE-SLATT & SLATT-JOHN DAY 500 KV 0.7 -856 0.70 -549 0.70 -1895 0.70 -403 0.70 -658 0.73 -1735 0.80 -1582 0.70 -962 BF 5021 SLATT-JOHN DAY & SLATT-LONGHORN 500 KV 0.7 -856 0.70 -549 0.70 -1907 0.70 -403 0.70 -657 0.73 -1736 0.80 -1579 0.70 -962 BF 5028 BUCKLEY-GRIZZLY & GRIZZLY-SUMMER LAKE 500 KV 0.7 -857 0.70 -550 0.70 -1883 0.70 -402 0.70 -659 0.73 -1722 0.80 -1573 0.70 -963 BF 5040 GRIZZLY-JOHN DAY & GRIZZLY-ROUND BU 500 KV 0.7 -856 0.70 -549 0.70 -1900 0.70 -401 0.70 -658 0.73 -1724 0.80 -1568 0.70 -962 BF 5114 ECHO LAKE-RAVER & ECHO LAKE- SNOK TAP 500 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 BF 5117 ECHO LAKE-MAPLE VALLEY & ECHO LAKE-RAVER 500 KV 0.7 -858 0.70 -550 0.70 -1914 0.70 -404 0.70 -659 0.73 -1732 0.80 -1573 0.70 -964 BF 5148 COULEE-SCHULTZ & ECHO LAKE-SCHULTZ 500 KV 0.7 -857 0.70 -550 0.70 -1901 0.70 -404 0.70 -658 0.73 -1724 0.80 -1567 0.70 -963 BF 5170 WAUTOMA-SCHULTZ & SCHULTZ-RAVER 500 KV 0.7 -858 0.70 -550 0.70 -1911 0.70 -404 0.70 -660 0.73 -1731 0.80 -1573 0.70 -964 BF 5179 VANTAGE-SCHULTZ & SCHULTZ-RAVER #4 0.7 -858 0.70 -550 0.70 -1914 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 BF 5187 MCNARY-LONGHORN & LONGHORN-SLATT 500 KV 0.7 -858 0.70 -550 0.70 -1899 0.70 -404 0.70 -659 0.73 -1733 0.80 -1576 0.70 -964 BF 5193 GRASSLAND-COYOTE & COYOTE-LONGHORN 500 KV 0.7 -855 0.70 -549 0.71 -1770 0.70 -403 0.70 -655 0.75 -1627 0.80 -1471 0.70 -960 BF 5211 LOW MON-MCNARY 500 KV & MCNARY 500/230 KV XFMR 0.7 -858 0.70 -550 0.71 -1886 0.70 -405 0.70 -659 0.73 -1724 0.80 -1571 0.70 -964 BF 5214 LOW MON-MCNARY & CALPINE PH 500 KV 0.7 -855 0.70 -549 0.72 -1768 0.70 -402 0.70 -655 0.75 -1617 0.81 -1458 0.70 -960 BF 5250 HANFORD-WAUTOMA#1 & WAUTOMA-KNIGHT 500 KV 0.7 -857 0.70 -550 0.70 -1908 0.70 -404 0.70 -658 0.73 -1729 0.80 -1571 0.70 -963 BF 5259 HANFORD-WAUTOMA#2 & WAUTOMA-ROCK CK 500 KV 0.7 -858 0.70 -550 0.70 -1910 0.70 -404 0.70 -659 0.73 -1731 0.80 -1572 0.70 -964 BF 5266 SLATT-BUCKLY 500 KV 0.7 -856 0.70 -549 0.70 -1916 0.70 -403 0.70 -657 0.73 -1738 0.80 -1579 0.70 -961 BF 5339 VANTAGE-SCHULTZ 500 KV & VANTAGE 500/230 XFMR #1 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -660 0.73 -1735 0.80 -1575 0.70 -964 BF 5345 VANTAGE-HANFORD 500 KV & VANTAGE 500/230 XFMR #1 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -660 0.73 -1733 0.80 -1574 0.70 -964 BF IPC HEM-GRASSLAND 500 KV & HEM 500/230 XFMR 0.7 -825 0.70 -535 0.70 -1109 0.70 -386 0.70 -604 0.74 -1299 0.82 -1384 0.72 -913 BF IPC HEMINGWAY-SUMMER L 500 KV & HEMINGWAY 500/230 XFMR 0.7 -830 0.70 -536 0.70 -1348 0.70 -397 0.70 -619 0.73 -1527 0.81 -1567 0.72 -920 BF IPC MIDPOINT-HEMINGWAY 500 KV & HEMINGWAY 500/230 XFMR 0.7 -831 0.70 -536 0.70 -1211 0.70 -396 0.70 -611 0.71 -1320 0.77 -1292 0.72 -921 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR 0.7 -846 0.70 -544 0.70 -1475 0.70 -404 0.70 -622 0.73 -1271 0.82 -1189 0.72 -939 BF IPC POPULUS-CHILL-HEM 500 KV & HEM 500/230 XFMR + RAS 0.7 -831 0.70 -538 0.70 -1378 0.70 -401 0.70 -586 0.74 -1020 0.83 -1137 0.72 -911 BF LOLO 230KV 0.7 -855 0.70 -549 0.70 -1844 0.70 -403 0.70 -654 0.73 -1705 0.80 -1565 0.70 -959 BF PGE GRASSLAND-CEDAR SPRING & HEMINGWAY-GRASSLAND 500 KV 0.7 -825 0.70 -535 0.71 -1186 0.70 -385 0.70 -605 0.74 -1316 0.82 -1438 0.72 -912 BF PGE GRASSLAND-COYOTE 500 KV & CARTY GAS PROJECT 0.7 -858 0.70 -550 0.70 -1879 0.70 -404 0.70 -659 0.73 -1720 0.80 -1566 0.70 -964 BF PGE SLATT-GRASSLAND 500 KV & BOARDMAN COAL GEN 0.7 -854 0.70 -548 0.71 -1742 0.70 -403 0.70 -654 0.75 -1607 0.81 -1461 0.70 -959 BUS: ALVEY 500 KV 0.7 -856 0.70 -549 0.70 -1904 0.70 -400 0.70 -658 0.73 -1727 0.80 -1569 0.70 -962 BUS: BELL BPA 500 KV 0.7 -852 0.70 -547 0.72 -1711 0.70 -400 0.70 -645 0.75 -1579 0.80 -1437 0.70 -954 BUS: BUCKLEY 500 KV 0.7 -854 0.70 -548 0.70 -1887 0.70 -399 0.70 -656 0.73 -1720 0.80 -1567 0.70 -959 BUS: DIXONVILLE 500 KV 0.7 -857 0.70 -550 0.70 -1907 0.70 -401 0.70 -659 0.73 -1727 0.80 -1569 0.70 -963 BUS: HOT SPRINGS 500 KV 0.7 -858 0.70 -550 0.70 -1923 0.70 -405 0.70 -660 0.73 -1739 0.80 -1578 0.70 -965 BUS: KEELER 500 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -405 0.70 -659 0.73 -1734 0.80 -1573 0.70 -964 Page 635 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm BUS: ROCK CREEK 500 KV 0.7 -857 0.70 -550 0.70 -1891 0.70 -403 0.70 -658 0.73 -1714 0.80 -1557 0.70 -963 BUS: SICKLER 500 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 BUS: SUMMER LAKE 500 KV 0.7 -828 0.70 -535 0.72 -1432 0.70 -396 0.70 -615 0.73 -1532 0.81 -1608 0.72 -917 N-1: ALLSTON-KEELER 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1573 0.70 -964 N-1: ALLSTON-NAPAVINE 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: ALLSTON-PAUL #2 500 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: ALVERY-DIXONVILLE 500 KV 0.7 -857 0.70 -550 0.70 -1912 0.70 -401 0.70 -659 0.73 -1731 0.80 -1572 0.70 -963 N-1: ALVEY-MARION 500 KV 0.7 -857 0.70 -549 0.70 -1916 0.70 -402 0.70 -658 0.73 -1735 0.80 -1575 0.70 -963 N-1: ASHE-HANFORD 500 KV 0.7 -857 0.70 -550 0.70 -1902 0.70 -403 0.70 -659 0.73 -1729 0.80 -1573 0.70 -964 N-1: ASHE-LOW MON 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 N-1: ASHE-MARION 500 KV 0.7 -856 0.70 -549 0.70 -1904 0.70 -402 0.70 -658 0.73 -1726 0.80 -1568 0.70 -962 N-1: ASHE-SLATT 500 KV 0.7 -858 0.70 -550 0.70 -1906 0.70 -404 0.70 -659 0.73 -1730 0.80 -1573 0.70 -964 N-1: BELL-COULEE 500 KV 0.7 -856 0.70 -549 0.70 -1859 0.70 -403 0.70 -654 0.74 -1687 0.80 -1532 0.70 -960 N-1: BELL-TAFT 500 KV 0.7 -852 0.70 -547 0.72 -1711 0.70 -400 0.70 -646 0.75 -1581 0.80 -1438 0.70 -954 N-1: BIG EDDY-CELILO 500 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1576 0.70 -965 N-1: BIG EDDY-JOHN DAY 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -660 0.73 -1735 0.80 -1575 0.70 -965 N-1: BIG EDDY-KNIGHT 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: BIG EDDY-OSTRANDER 500 KV 0.7 -858 0.70 -550 0.70 -1911 0.70 -404 0.70 -659 0.73 -1731 0.80 -1572 0.70 -964 N-1: BOISE BENCH-BROWNLEE #3 230 KV 0.7 -858 0.70 -550 0.70 -1901 0.70 -405 0.70 -658 0.73 -1713 0.80 -1563 0.70 -964 N-1: BRADY-ANTELOPE 230 KV + RAS 0.7 -855 0.70 -549 0.70 -1832 0.70 -403 0.70 -652 0.73 -1676 0.80 -1543 0.70 -959 N-1: BROADVIEW-GARRISON #1 500 KV 0.7 -856 0.70 -549 0.73 -1767 0.70 -403 0.70 -653 0.75 -1630 0.81 -1465 0.70 -961 N-1: BROWNLEE-ONTARIO 230 KV 0.7 -858 0.70 -550 0.70 -1885 0.70 -405 0.70 -658 0.73 -1703 0.80 -1556 0.70 -964 N-1: BUCKLEY-GRIZZLY 500 KV 0.7 -857 0.70 -549 0.70 -1913 0.70 -402 0.70 -658 0.73 -1732 0.80 -1573 0.70 -962 N-1: BUCKLEY-MARION 500 KV 0.7 -857 0.70 -550 0.70 -1903 0.70 -402 0.70 -658 0.73 -1727 0.80 -1571 0.70 -963 N-1: BUCKLEY-SLATT 500 KV 0.7 -856 0.70 -549 0.70 -1916 0.70 -403 0.70 -657 0.73 -1738 0.80 -1579 0.70 -961 N-1: CAL SUB 120 KV PHASE SHIFTER 0.7 -833 0.70 -463 0.70 -1890 0.70 -396 0.70 -669 0.73 -1718 0.80 -1563 0.70 -926 N-1: CAPTAIN JACK-OLINDA 500 KV 0.7 -856 0.70 -548 0.70 -1920 0.70 -399 0.70 -658 0.73 -1748 0.80 -1591 0.70 -961 N-1: CAPTJACK-KFALLS 500 KV 0.7 -857 0.70 -550 0.70 -1909 0.70 -402 0.70 -659 0.73 -1730 0.80 -1572 0.70 -963 N-1: CASCADE CROSSING 500 KV 0.7 -855 0.70 -549 0.70 -1902 0.70 -401 0.70 -657 0.73 -1733 0.80 -1578 0.70 -960 N-1: CHIEF JO-COULEE 500 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 N-1: CHIEF JO-MONROE 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1731 0.80 -1572 0.70 -964 N-1: CHIEF JO-SICKLER 500 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: COULEE-HANFORD 500 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1732 0.80 -1574 0.70 -964 N-1: COULEE-SCHULTZ 500 KV 0.7 -858 0.70 -550 0.70 -1910 0.70 -404 0.70 -659 0.73 -1729 0.80 -1570 0.70 -964 N-1: COVINGTON4-RAVER 500 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: COVINGTON5-RAVER 500 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: COYOTE-LONGHORN 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1739 0.80 -1580 0.70 -964 N-1: CUSTERW-MONROE 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1735 0.80 -1574 0.70 -964 N-1: DIXONVILLE-MERIDIAN 500 KV 0.7 -857 0.70 -550 0.70 -1903 0.70 -401 0.70 -659 0.73 -1725 0.80 -1567 0.70 -963 N-1: DRYCREEK-LOLO 230 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -659 0.73 -1736 0.80 -1575 0.70 -964 N-1: DRYCREEK-N LEWISTON 230 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -659 0.73 -1736 0.80 -1575 0.70 -964 N-1: DRYCREEK-WALA AVA 230 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -405 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: DWORSHAK-HATWAI 500 KV 0.7 -857 0.70 -550 0.71 -1864 0.70 -404 0.70 -656 0.74 -1688 0.80 -1528 0.70 -962 N-1: DWORSHAK-TAFT 500 KV 0.7 -857 0.70 -550 0.70 -1859 0.70 -404 0.70 -656 0.74 -1687 0.80 -1533 0.70 -962 N-1: ECHO LAKE-MAPLE VALLEY 500 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 N-1: ECHO LAKE-RAVER 500 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: ECHO LAKE-SCHULTZ 500 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1731 0.80 -1572 0.70 -964 N-1: ECHO LAKE-SNOK TAP 500 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1737 0.80 -1576 0.70 -965 N-1: GARRISON-TAFT #2 500 KV 0.7 -855 0.70 -549 0.71 -1812 0.70 -403 0.70 -653 0.74 -1647 0.80 -1493 0.70 -960 N-1: GOLDHILL-PLACER 115 KV 0.7 -859 0.70 -550 0.70 -1922 0.70 -405 0.70 -660 0.73 -1738 0.80 -1577 0.70 -965 N-1: GRASSLAND-COYOTE 500 KV 0.7 -858 0.70 -550 0.70 -1879 0.70 -404 0.70 -659 0.73 -1720 0.80 -1566 0.70 -964 N-1: GRASSLAND-SLATT 500 KV 0.7 -856 0.70 -549 0.70 -1889 0.70 -404 0.70 -657 0.73 -1737 0.80 -1584 0.70 -961 Page 636 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: GRIZZLY-JOHN DAY #2 500 KV 0.7 -856 0.70 -549 0.70 -1904 0.70 -401 0.70 -658 0.73 -1726 0.80 -1569 0.70 -962 N-1: GRIZZLY-MALIN 500 KV 0.7 -854 0.70 -548 0.70 -1898 0.70 -397 0.70 -657 0.73 -1724 0.80 -1569 0.70 -959 N-1: GRIZZLY-PONDEROSA A-SUMMER L 500 KV 0.7 -858 0.70 -550 0.70 -1889 0.70 -404 0.70 -660 0.73 -1725 0.80 -1575 0.70 -965 N-1: GRIZZLY-PONDEROSA B-CAPT JACK 500 KV 0.7 -854 0.70 -548 0.70 -1896 0.70 -398 0.70 -656 0.73 -1724 0.80 -1569 0.70 -959 N-1: GRIZZLY-ROUND BU 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: HANFORD-LOW MON 500 KV 0.7 -858 0.70 -550 0.70 -1908 0.70 -404 0.70 -658 0.73 -1729 0.80 -1570 0.70 -963 N-1: HANFORD-VANTAGE 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -660 0.73 -1733 0.80 -1574 0.70 -964 N-1: HANFORD-WAUTOMA 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: HARRY ALLEN 345 KV PHASE SHIFTER 0.7 -847 0.70 -545 0.73 -1541 0.70 -401 0.70 -611 0.77 -1409 0.82 -1301 0.72 -933 N-1: HATWAI 500/230 KV XFMR 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -659 0.73 -1737 0.80 -1576 0.70 -964 N-1: HATWAI-LOLO 230 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -405 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: HATWAI-LOW GRAN 500 KV 0.7 -856 0.70 -549 0.70 -1862 0.70 -403 0.70 -654 0.74 -1689 0.80 -1534 0.70 -960 N-1: HATWAI-N LEWISTON 230 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: HELLS CANYON-BROWNLEE 230 KV 0.7 -857 0.70 -550 0.71 -1784 0.70 -404 0.70 -658 0.74 -1649 0.80 -1544 0.70 -963 N-1: HELLS CANYON-WALLA WALLA 230 KV 0.7 -854 0.70 -548 0.71 -1775 0.70 -402 0.70 -650 0.73 -1662 0.80 -1544 0.70 -957 N-1: HEMINGWAY-GRASSLAND 500 KV 0.7 -827 0.70 -535 0.70 -1207 0.70 -387 0.70 -608 0.74 -1336 0.82 -1457 0.72 -915 N-1: HEMINGWAY-SUMMER LAKE 500 KV 0.7 -830 0.70 -536 0.72 -1454 0.70 -397 0.70 -619 0.73 -1550 0.81 -1609 0.72 -920 N-1: HILL TOP 345/230 XFMR 0.7 -777 0.70 -544 0.70 -1875 0.70 -234 0.70 -670 0.73 -1707 0.80 -1553 0.70 -887 N-1: HORSE HV-MCNARY 230 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -404 0.70 -659 0.73 -1736 0.80 -1575 0.70 -964 N-1: HOT SPRINGS-TAFT 500 KV 0.7 -858 0.70 -550 0.70 -1914 0.70 -405 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 N-1: HUMBOLDT-COYOTE CK 345 KV 0.7 -862 0.70 -555 0.71 -1807 0.70 -408 0.70 -233 0.74 -1615 0.80 -1564 0.74 -935 N-1: HUNTINGTON-PINTO-FOUR CORNERS 345 KV 0.7 -848 0.70 -546 0.73 -1578 0.70 -401 0.70 -620 0.76 -1442 0.82 -1340 0.72 -939 N-1: ING500-CUSTERW 500 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -659 0.73 -1736 0.80 -1575 0.70 -964 N-1: JOHN DAY-MARION 500 KV 0.7 -857 0.70 -550 0.70 -1904 0.70 -402 0.70 -658 0.73 -1727 0.80 -1570 0.70 -963 N-1: JOHN DAY-ROCK CK 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: JOHN DAY-SLATT 500 KV 0.7 -857 0.70 -549 0.70 -1915 0.70 -403 0.70 -658 0.73 -1740 0.80 -1582 0.70 -962 N-1: KFALLS-MERIDIAN 500 KV 0.7 -857 0.70 -550 0.70 -1882 0.70 -401 0.70 -660 0.73 -1708 0.80 -1554 0.70 -964 N-1: KNIGHT-WAUTOMA 500 KV 0.7 -858 0.70 -550 0.70 -1911 0.70 -404 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 N-1: LAGRANDE-NORTH POWDER 230 KV 0.7 -856 0.70 -549 0.70 -1856 0.70 -403 0.70 -655 0.73 -1708 0.80 -1564 0.70 -960 N-1: LANES-MARION 500 KV 0.7 -857 0.70 -550 0.70 -1912 0.70 -403 0.70 -659 0.73 -1732 0.80 -1573 0.70 -963 N-1: LIT GOOSE-CENTRAL FERRY 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -659 0.73 -1735 0.80 -1574 0.70 -964 N-1: LIT GOOSE-LOW MON 500 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: LOW GRAN-CENTRAL FERRY 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 N-1: LOW MON-SAC TAP 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -660 0.73 -1736 0.80 -1576 0.70 -964 N-1: MALIN 500/230 XFMR 0.7 -833 0.70 -551 0.70 -1923 0.70 -297 0.70 -658 0.73 -1738 0.80 -1577 0.70 -940 N-1: MALIN-HILLTOP 230 KV 0.7 -785 0.70 -548 0.70 -1895 0.70 -191 0.70 -666 0.73 -1720 0.80 -1564 0.70 -896 N-1: MALIN-ROUND MTN #1 500 KV 0.7 -856 0.70 -548 0.70 -1914 0.70 -400 0.70 -658 0.73 -1738 0.80 -1581 0.70 -961 N-1: MALIN-ROUND MTN #2 500 KV 0.7 -856 0.70 -548 0.70 -1914 0.70 -400 0.70 -658 0.73 -1738 0.80 -1581 0.70 -961 N-1: MALIN-SUMMER LAKE 500 KV 0.7 -853 0.70 -547 0.70 -1879 0.70 -403 0.70 -654 0.73 -1742 0.80 -1604 0.70 -957 N-1: MAPLE VLY-ROCKY RH 345 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -404 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: MARION-PEARL 500 KV 0.7 -859 0.70 -551 0.70 -1913 0.70 -406 0.70 -661 0.73 -1732 0.80 -1573 0.70 -966 N-1: MARION-SANTIAM 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -405 0.70 -659 0.73 -1735 0.80 -1574 0.70 -965 N-1: MCLOUGLIN-OSTRANDER 230 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: MCNARY 500/230 KV XFMR 0.7 -858 0.70 -550 0.71 -1891 0.70 -405 0.70 -659 0.73 -1726 0.80 -1571 0.70 -964 N-1: MCNARY-BOARD T1 230 KV 0.7 -859 0.70 -550 0.70 -1933 0.70 -405 0.70 -660 0.73 -1748 0.80 -1586 0.70 -965 N-1: MCNARY-JOHN DAY 500 KV 0.7 -857 0.70 -549 0.70 -1908 0.70 -403 0.70 -658 0.73 -1731 0.80 -1572 0.70 -962 N-1: MCNARY-LONGHORN 500 KV 0.7 -858 0.70 -550 0.70 -1905 0.70 -405 0.70 -660 0.73 -1733 0.80 -1574 0.70 -965 N-1: MCNARY-ROSS 345 KV 0.7 -857 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1732 0.80 -1572 0.70 -963 N-1: MCNARY-ROUNDUP 230 KV 0.7 -857 0.70 -549 0.71 -1858 0.70 -404 0.70 -656 0.73 -1705 0.80 -1567 0.70 -962 N-1: MCNARY-SAC TAP-LOW MON 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1733 0.80 -1574 0.70 -964 N-1: MIDPOINT-HEMINGWAY 500 KV 0.7 -836 0.70 -539 0.70 -1461 0.70 -397 0.70 -616 0.70 -1301 0.79 -1355 0.72 -929 N-1: MIDPOINT-HUMBOLDT 345 KV 0.7 -867 0.70 -558 0.71 -1754 0.70 -409 0.70 -405 0.73 -1583 0.80 -1530 0.75 -942 Page 637 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-1: NAPAVINE-PAUL 500 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: OLYMPIA-PAUL 500 KV 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: ONTARIO-CALDWELL 230 KV 0.7 -858 0.70 -550 0.70 -1914 0.70 -405 0.70 -659 0.73 -1729 0.80 -1571 0.70 -964 N-1: OSTRANDER-KNIGHT 500 KV 0.7 -857 0.70 -550 0.70 -1908 0.70 -403 0.70 -659 0.73 -1729 0.80 -1571 0.70 -963 N-1: OSTRANDER-PEARL 500 KV 0.7 -858 0.70 -550 0.70 -1922 0.70 -404 0.70 -660 0.73 -1737 0.80 -1576 0.70 -964 N-1: OSTRANDER-TROUTDALE 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1735 0.80 -1574 0.70 -964 N-1: OXBOW-BROWNLEE #2 230 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -405 0.70 -659 0.73 -1731 0.80 -1574 0.70 -964 N-1: OXBOW-LOLO 230 KV 0.7 -855 0.70 -549 0.70 -1836 0.70 -403 0.70 -654 0.73 -1699 0.80 -1562 0.70 -959 N-1: PAUL-SATSOP 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: PEARL-KEELER 500 KV 0.7 -859 0.70 -550 0.70 -1922 0.70 -405 0.70 -660 0.73 -1738 0.80 -1577 0.70 -965 N-1: PINTO-FOUR CORNER 345 KV 0.7 -849 0.70 -546 0.73 -1603 0.70 -401 0.70 -623 0.76 -1465 0.82 -1360 0.72 -941 N-1: PONDEROSA A 500/230 KV XFMR 0.7 -858 0.70 -550 0.70 -1921 0.70 -404 0.70 -659 0.73 -1737 0.80 -1576 0.70 -964 N-1: PONDEROSA B 500/230 KV XFMR 0.7 -858 0.70 -550 0.70 -1919 0.70 -404 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: POPULUS-CEDAR HILL-HEMINGWAY 500 KV 0.7 -847 0.70 -545 0.70 -1555 0.70 -403 0.70 -624 0.74 -1277 0.82 -1196 0.72 -941 N-1: RAVER-PAUL 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -660 0.73 -1735 0.80 -1575 0.70 -965 N-1: RAVER-TACOMA 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: RED BUTTE-HARRY ALLEN 345 KV 0.7 -848 0.70 -546 0.73 -1543 0.70 -401 0.70 -613 0.77 -1411 0.82 -1303 0.72 -936 N-1: ROBINSON-HARRY ALLEN 500 KV 0.7 -831 0.70 -535 0.70 -1885 0.70 -394 0.70 -624 0.73 -1724 0.80 -1573 0.71 -927 N-1: ROCK CK-WAUTOMA 500 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1732 0.80 -1573 0.70 -964 N-1: ROUND MTN-TABLE MTN 500 KV 0.7 -857 0.70 -549 0.70 -1923 0.70 -403 0.70 -659 0.73 -1742 0.80 -1582 0.70 -963 N-1: ROUNDUP-LAGRANDE 230 KV 0.7 -856 0.70 -549 0.70 -1858 0.70 -403 0.70 -656 0.73 -1706 0.80 -1565 0.70 -961 N-1: SCHULTZ-SICKLER 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -659 0.73 -1735 0.80 -1575 0.70 -964 N-1: SCHULTZ-VANTAGE 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -660 0.73 -1735 0.80 -1575 0.70 -964 N-1: SCHULTZ-WAUTOMA 500 KV 0.7 -858 0.70 -550 0.70 -1914 0.70 -404 0.70 -660 0.73 -1734 0.80 -1575 0.70 -965 N-1: SIGURD-GLEN CANYON 230 KV 0.7 -856 0.70 -549 0.70 -1849 0.70 -404 0.70 -650 0.74 -1676 0.80 -1529 0.70 -958 N-1: SLATT 500/230 KV XFMR 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-1: SLATT-LONGHORN 500 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -404 0.70 -659 0.73 -1734 0.80 -1575 0.70 -964 N-1: SNOK TAP-SNOKING 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1734 0.80 -1573 0.70 -964 N-1: TABLE MTN-TESLA 500 KV 0.7 -859 0.70 -550 0.70 -1932 0.70 -405 0.70 -659 0.73 -1749 0.80 -1587 0.70 -965 N-1: TABLE MTN-VACA DIXON 500 KV 0.7 -859 0.70 -550 0.70 -1940 0.70 -404 0.70 -659 0.73 -1757 0.79 -1596 0.70 -964 N-1: VANTAGE 500/230 KV XFMR #1 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1576 0.70 -965 N-1: VANTAGE 500/230 KV XFMR #2 0.7 -858 0.70 -550 0.70 -1921 0.70 -405 0.70 -660 0.73 -1736 0.80 -1575 0.70 -965 N-1: WALLA WALLA-TALBOT 230 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -405 0.70 -659 0.73 -1735 0.80 -1574 0.70 -965 N-1: WALLA WALLA-WALLULA 230 KV 0.7 -858 0.70 -550 0.70 -1899 0.70 -404 0.70 -659 0.73 -1729 0.80 -1572 0.70 -964 N-2: ASHE-MARION & ASHE-SLATT 500 KV 0.7 -856 0.70 -549 0.70 -1886 0.70 -401 0.70 -657 0.73 -1718 0.80 -1564 0.70 -962 N-2: ASHE-MARION & BUCKLEY-MARION 500 KV 0.7 -854 0.70 -549 0.70 -1886 0.70 -399 0.70 -656 0.73 -1718 0.80 -1564 0.70 -960 N-2: ASHE-MARION & SLATT-BUCKLEY 500 KV 0.7 -854 0.70 -548 0.70 -1900 0.70 -400 0.70 -655 0.73 -1729 0.80 -1573 0.70 -958 N-2: ASHE-MARION & SLATT-COYOTE TAP-LONGHORN 500 KV 0.7 -856 0.70 -549 0.70 -1898 0.70 -401 0.70 -657 0.73 -1724 0.80 -1567 0.70 -961 N-2: ASHE-MARION & SLATT-JOHN DAY 500 KV 0.7 -855 0.70 -549 0.70 -1897 0.70 -401 0.70 -656 0.73 -1731 0.80 -1575 0.70 -960 N-2: ASHE-SLATT & MCNARY-JOHN DAY 500 KV 0.7 -856 0.70 -549 0.70 -1891 0.70 -403 0.70 -657 0.73 -1724 0.80 -1569 0.70 -962 N-2: ASHE-SLATT & SLATT-COYOTE TAP-LONGHORN 500 KV 0.7 -857 0.70 -550 0.70 -1899 0.70 -404 0.70 -658 0.73 -1727 0.80 -1571 0.70 -963 N-2: BELL-TAFT & TAFT-DWORSKAK 500 KV + RAS 0.7 -845 0.70 -545 0.73 -1465 0.70 -397 0.70 -639 0.78 -1364 0.81 -1238 0.71 -946 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-ROUND BUTTE 230 KV 0.7 -855 0.70 -549 0.70 -1904 0.70 -401 0.70 -657 0.73 -1734 0.80 -1579 0.70 -960 N-2: BETHEL-CEDAR SPRING 500 KV & BETHEL-SANTIAM 230 KV 0.7 -855 0.70 -549 0.70 -1905 0.70 -401 0.70 -657 0.73 -1735 0.80 -1580 0.70 -960 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-CHEMAWA 230 KV 0.7 -857 0.70 -550 0.70 -1908 0.70 -403 0.70 -659 0.73 -1729 0.80 -1571 0.70 -964 N-2: BIG EDDY-OSTRANDER 500 KV & BIG EDDY-TROUTDALE 230 KV 0.7 -858 0.70 -550 0.70 -1909 0.70 -403 0.70 -659 0.73 -1730 0.80 -1571 0.70 -964 N-2: BOISE BENCH-BROWNLEE #1 & #2 230 KV 0.7 -858 0.70 -550 0.70 -1861 0.70 -404 0.70 -655 0.73 -1661 0.80 -1533 0.70 -963 N-2: BOISE BENCH-BROWNLEE #3 & BOISE BENCH-HORSEFLAT#4 230 KV 0.7 -858 0.70 -550 0.70 -1860 0.70 -404 0.70 -655 0.73 -1661 0.80 -1532 0.70 -963 N-2: BRIDGER-POPULUS #1 & #2 345 KV 0.7 -859 0.70 -551 0.73 -1439 0.70 -405 0.70 -651 0.80 -1344 0.84 -968 0.70 -964 N-2: BRIDGER-POPULUS #2 & BRIDGER-3MILEKNOLL 345 KV 0.7 -858 0.70 -550 0.79 -1509 0.70 -404 0.70 -647 0.81 -1296 0.84 -919 0.70 -961 N-2: BROADVIEW-GARRISON #1 & #2 500 KV + RAS 0.7 -848 0.70 -547 0.85 -1249 0.70 -399 0.70 -645 0.86 -1158 0.88 -1061 0.70 -950 N-2: BROWNLEE-HELLS CANYON & OXBOW-LOLO 230 KV 0.7 -853 0.70 -548 0.72 -1657 0.70 -402 0.70 -649 0.74 -1575 0.80 -1523 0.70 -956 Page 638 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: BROWNLEE-OXBOW & BROWNLEE-HELLS CANYON 230 KV 0.7 -857 0.70 -550 0.71 -1780 0.70 -404 0.70 -657 0.74 -1645 0.80 -1543 0.70 -963 N-2: BUCKLEY-MARION & JOHN DAY-MARION 500 KV 0.7 -855 0.70 -549 0.70 -1884 0.70 -399 0.70 -657 0.73 -1718 0.80 -1565 0.70 -961 N-2: CHIEF JO-MONROE & CHIEF JO-SICKLER 500 KV 0.7 -858 0.70 -550 0.70 -1906 0.70 -404 0.70 -659 0.73 -1727 0.80 -1569 0.70 -964 N-2: CHIEF JO-MONROE 500 KV & CHIEF JO-SNOHOMS4 345 KV 0.7 -858 0.70 -550 0.70 -1909 0.70 -404 0.70 -659 0.73 -1728 0.80 -1570 0.70 -964 N-2: CHIEF JO-MONROE 500 KV & MONROE-SAMMAMSH 230 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 N-2: CHIEF JO-SICKLER 500 KV & CHIEF J3-SNOHOMS3 345 KV 0.7 -858 0.70 -550 0.70 -1914 0.70 -404 0.70 -659 0.73 -1732 0.80 -1573 0.70 -964 N-2: COULEE-CHIEF JO 500 KV & CHIEF J4-SNOHOMS4 345 KV 0.7 -858 0.70 -550 0.70 -1910 0.70 -404 0.70 -659 0.73 -1729 0.80 -1570 0.70 -964 N-2: COULEE-HANFORD & HANFORD-VANTAGE 500 KV 0.7 -858 0.70 -550 0.70 -1902 0.70 -404 0.70 -660 0.73 -1729 0.80 -1573 0.70 -964 N-2: COULEE-SCHULTZ #1 & #2 500 KV 0.7 -857 0.70 -550 0.70 -1892 0.70 -403 0.70 -658 0.73 -1716 0.80 -1560 0.70 -963 N-2: CUSTERW-ING500 & CUSTERW-MONROE 500 KV 0.7 -858 0.70 -550 0.70 -1917 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-2: CUSTERW-MONROE #1 & #2 500 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1732 0.80 -1572 0.70 -964 N-2: DC-BIPOLE 0.7 -867 0.70 -554 0.70 -2168 0.70 -411 0.70 -654 0.70 -1942 0.78 -1772 0.71 -970 N-2: DOUBLE PALO VERDE 0.7 -873 0.70 -558 0.70 -2145 0.70 -407 0.70 -654 0.72 -1917 0.78 -1709 0.70 -981 N-2: ECHOLAKE-MAPLE VLY 500 KV & COVINGTON-MAPLE VLY 230 KV 0.7 -858 0.70 -550 0.70 -1915 0.70 -404 0.70 -659 0.73 -1733 0.80 -1573 0.70 -964 N-2: ECHOLAKE-MAPLE VLY 500 KV & ROCKY RH-MAPLE VLY 345 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1731 0.80 -1572 0.70 -964 N-2: GARRISON-TAFT #1 & #2 500 KV + RAS 0.7 -846 0.70 -546 0.73 -1454 0.70 -398 0.70 -639 0.78 -1356 0.82 -1220 0.71 -946 N-2: GRASSLAND-CEDAR SPRING & SLATT - BUCKLEY 500 KV 0.7 -853 0.70 -548 0.70 -1908 0.70 -400 0.70 -654 0.73 -1742 0.80 -1588 0.70 -957 N-2: GRASSLAND-COYOTE & SLATT - LONGHORN 500 KV 0.7 -857 0.70 -550 0.70 -1838 0.70 -404 0.70 -657 0.73 -1700 0.80 -1551 0.70 -963 N-2: GRIZZLY-MALIN & GRIZZLY-CAPTAIN JACK 500 KV 0.7 -849 0.70 -546 0.70 -1877 0.70 -390 0.70 -652 0.73 -1716 0.80 -1567 0.70 -952 N-2: GRIZZLY-MALIN & GRIZZLY-SUMMER LAKE 500 KV 0.7 -854 0.70 -549 0.70 -1863 0.70 -397 0.70 -657 0.73 -1709 0.80 -1565 0.70 -960 N-2: GRIZZLY-MALIN & MALIN-SUMMER LAKE 500 KV 0.7 -846 0.70 -544 0.70 -1866 0.70 -395 0.70 -648 0.73 -1745 0.80 -1619 0.71 -947 N-2: HANFORD-ASHE & HANFORD-LOW MON 500 KV 0.7 -855 0.70 -549 0.70 -1855 0.70 -401 0.70 -656 0.73 -1706 0.80 -1557 0.70 -960 N-2: HANFORD-WAUTOMA #1 & #2 500 KV 0.7 -857 0.70 -550 0.70 -1910 0.70 -404 0.70 -658 0.73 -1729 0.80 -1571 0.70 -963 N-2: HELLS CANYON-BROWNLEE & OXBOW-LOLO 230 KV 0.7 -853 0.70 -548 0.72 -1677 0.70 -402 0.70 -650 0.74 -1593 0.80 -1543 0.70 -956 N-2: JOHN DAY-BIG EDDY #1 & #2 500 KV 0.7 -858 0.70 -550 0.70 -1899 0.70 -403 0.70 -660 0.73 -1726 0.80 -1571 0.70 -965 N-2: JOHN DAY-BIG EDDY & JOHN DAY-MARION 500 KV 0.7 -857 0.70 -550 0.70 -1899 0.70 -402 0.70 -658 0.73 -1725 0.80 -1569 0.70 -963 N-2: JOHN DAY-GRIZZLY #1 & #2 500 KV 0.7 -853 0.70 -548 0.70 -1880 0.70 -395 0.70 -656 0.73 -1711 0.80 -1560 0.70 -958 N-2: JOHN DAY-GRIZZLY #2 & BUCKLEY-GRIZZLY 500 KV 0.7 -854 0.70 -548 0.70 -1895 0.70 -397 0.70 -656 0.73 -1720 0.80 -1566 0.70 -959 N-2: JOHN DAY-MARION & BUCKLEY-MARION 500 KV 0.7 -855 0.70 -549 0.70 -1884 0.70 -399 0.70 -657 0.73 -1718 0.80 -1565 0.70 -961 N-2: JOHN DAY-MARION & MARION-PEARL 500 KV 0.7 -858 0.70 -550 0.70 -1894 0.70 -403 0.70 -659 0.73 -1721 0.80 -1567 0.70 -964 N-2: JOHN DAY-ROCK CREEK 500 KV & MCNARY-ROSS 345 KV 0.7 -857 0.70 -550 0.70 -1907 0.70 -403 0.70 -658 0.73 -1730 0.80 -1571 0.70 -963 N-2: KEELER-PEARL 500 & SHERWOOD-CARLTON 230 KV 0.7 -859 0.70 -550 0.70 -1924 0.70 -405 0.70 -660 0.73 -1740 0.80 -1579 0.70 -965 N-2: KNIGHT-OSTRANDER & OSTRANDER-BIG EDDY 500 KV 0.7 -857 0.70 -549 0.70 -1893 0.70 -402 0.70 -658 0.73 -1720 0.80 -1565 0.70 -962 N-2: KNIGHT-OSTRANDER 500 KV & MCNARY-ROSS 345 KV 0.7 -857 0.70 -549 0.70 -1898 0.70 -402 0.70 -658 0.73 -1724 0.80 -1568 0.70 -962 N-2: KNIGHT-OSTRANDER 500 KV & MIDWAY-BONNEVILLE 230 KV 0.7 -857 0.70 -550 0.70 -1909 0.70 -403 0.70 -659 0.73 -1731 0.80 -1572 0.70 -963 N-2: LOWER GRANITE-CENTRAL FERRY #1 & #2 500 KV 0.7 -855 0.70 -549 0.70 -1855 0.70 -403 0.70 -653 0.74 -1684 0.80 -1527 0.70 -959 N-2: MALIN-ROUND MTN #1 & #2 500 KV 0.7 -850 0.70 -541 0.70 -1944 0.70 -392 0.70 -652 0.72 -1789 0.79 -1644 0.70 -951 N-2: MCNARY-JOHN DAY & ROCK CREEK-JOHN DAY 500 KV 0.7 -856 0.70 -549 0.70 -1902 0.70 -402 0.70 -657 0.73 -1728 0.80 -1570 0.70 -962 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-HORSE HEAVEN 230 KV 0.7 -856 0.70 -549 0.70 -1904 0.70 -403 0.70 -657 0.73 -1730 0.80 -1572 0.70 -962 N-2: MCNARY-JOHN DAY 500 KV & MCNARY-ROSS 345 KV 0.7 -856 0.70 -549 0.70 -1896 0.70 -402 0.70 -656 0.73 -1726 0.80 -1569 0.70 -961 N-2: MCNARY-ROSS 345 KV & MCNARY-HORSE HEAVEN 230 KV 0.7 -857 0.70 -550 0.70 -1909 0.70 -403 0.70 -658 0.73 -1731 0.80 -1572 0.70 -963 N-2: MIDPOINT-SUMMER LAKE 500 KV & MIDPOINT-KING 230 KV 0.7 -835 0.70 -539 0.70 -1453 0.70 -397 0.70 -613 0.70 -1285 0.79 -1336 0.72 -928 N-2: MONROE-CUSTERW & CHIEF JO-MONROE 500 KV 0.7 -858 0.70 -550 0.70 -1909 0.70 -404 0.70 -659 0.73 -1729 0.80 -1570 0.70 -964 N-2: NAPAVINE-ALLSTON & PAUL-ALLSTON #2 500 KV 0.7 -856 0.70 -549 0.70 -1895 0.70 -402 0.70 -657 0.73 -1719 0.80 -1562 0.70 -962 N-2: PAUL-NAPAVINE & PAUL-ALLSTON #2 500 KV 0.7 -858 0.70 -550 0.70 -1912 0.70 -404 0.70 -659 0.73 -1731 0.80 -1571 0.70 -964 N-2: PAUL-RAVER & RAVER-COVINGT4 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -660 0.73 -1735 0.80 -1575 0.70 -965 N-2: PEARL-KEELER 500 KV & PEARL-SHERWOOD 230 KV 0.7 -859 0.70 -550 0.70 -1923 0.70 -405 0.70 -660 0.73 -1739 0.80 -1577 0.70 -965 N-2: PEARL-OSTRANDER 500 KV & BIG EDDY-MCLOUGLN 230 KV 0.7 -858 0.70 -550 0.70 -1920 0.70 -404 0.70 -659 0.73 -1736 0.80 -1575 0.70 -964 N-2: PEARL-OSTRANDER 500 KV & OSTRANDER-MCLOUGLN 230 KV 0.7 -858 0.70 -550 0.70 -1923 0.70 -405 0.70 -660 0.73 -1737 0.80 -1576 0.70 -964 N-2: RAVER-COVINGTON #1 & #2 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -660 0.73 -1735 0.80 -1574 0.70 -964 N-2: RAVER-ECHO LAKE & RAVER-SCHULTZ 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-2: RAVER-PAUL & NAPAVINE-PAUL 500 KV 0.7 -858 0.70 -550 0.70 -1919 0.70 -405 0.70 -660 0.73 -1735 0.80 -1575 0.70 -965 Page 639 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case VQ Results V is the voltage at Qm & Qm is the Reactive Margin Yellow Highlights indicate one of the 10 worst reactive margin contingencies Contingency Name Bordertown Cal Sub Hemingway Hill top Humboldt Midpoint Populus Valley Road V Qm V Qm V Qm V Qm V Qm V Qm V Qm V Qm N-2: RAVER-PAUL 500 KV & COULEE-OLYMPIA 300 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -405 0.70 -660 0.73 -1734 0.80 -1574 0.70 -965 N-2: RAVER-PAUL 500 KV & TACOMA A-CHEHALIS 230 KV 0.7 -859 0.70 -550 0.70 -1923 0.70 -405 0.70 -660 0.73 -1739 0.80 -1579 0.70 -965 N-2: RAVER-SCHULTZ #1 & #2 500 KV 0.7 -857 0.70 -550 0.70 -1901 0.70 -404 0.70 -659 0.73 -1724 0.80 -1567 0.70 -963 N-2: RAVER-TACOMA & RAVER-COVINGT4 500 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-2: RAVER-TACOMA 500 KV & TACOMA-CHRISTOP-COVINGTON 230 KV 0.7 -858 0.70 -550 0.70 -1918 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-2: ROUND MTN-TABLE MTN #1 & #2 500 KV 0.7 -854 0.70 -542 0.70 -1994 0.70 -402 0.70 -654 0.72 -1818 0.79 -1663 0.70 -955 N-2: SCHULTZ-WAUTOMA & VANTAGE-SCHULTZ 500 KV 0.7 -858 0.70 -550 0.70 -1910 0.70 -404 0.70 -660 0.73 -1733 0.80 -1575 0.70 -965 N-2: SICKLER-SCHULTZ & SCHULTZ-VANTAGE 500 KV 0.7 -858 0.70 -550 0.70 -1916 0.70 -404 0.70 -659 0.73 -1734 0.80 -1574 0.70 -964 N-2: TABLE MTN-TESLA & TABLE MTN-VACA DIXON 500 KV 0.7 -862 0.70 -549 0.70 -2012 0.70 -406 0.70 -657 0.72 -1826 0.79 -1666 0.70 -965 N-2: TAFT-BELL 500KV & BELL-BOUNDARY #3 230KV 0.7 -852 0.70 -547 0.72 -1710 0.70 -400 0.70 -646 0.75 -1580 0.80 -1438 0.70 -954 N-2: TAFT-BELL 500KV & BELL-LANCASTER 230KV + RAS 0.7 -850 0.70 -547 0.73 -1635 0.70 -399 0.70 -643 0.76 -1520 0.80 -1381 0.71 -951 N-2: TAFT-BELL 500KV & BELL-TRENTWOOD #2 115KV 0.7 -852 0.70 -547 0.72 -1711 0.70 -400 0.70 -646 0.75 -1580 0.80 -1438 0.70 -954 N-2: TAFT-BELL 500KV & LANCASTER-NOXON 230KV + RAS 0.7 -851 0.70 -547 0.73 -1672 0.70 -400 0.70 -645 0.75 -1552 0.80 -1413 0.70 -953 N-2: TAFT-DWORSHAK & GARRISON-TAFT #1 500KV 0.7 -854 0.70 -548 0.72 -1743 0.70 -402 0.70 -649 0.75 -1591 0.80 -1442 0.70 -957 N-2: WAUTOMA-ROCK CK 500 KV & MIDWAY-BIG EDDY 230 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1733 0.80 -1574 0.70 -964 N-2: WAUTOMA-ROCK CK 500 KV & SPRINGCREEK-BIG EDDY 230 KV 0.7 -858 0.70 -550 0.70 -1913 0.70 -404 0.70 -659 0.73 -1733 0.80 -1574 0.70 -964 N-3: SCHULTZ-RAVER #1 & #2 & #3 500 KV 0.7 -857 0.70 -550 0.70 -1900 0.70 -403 0.70 -658 0.73 -1724 0.80 -1566 0.70 -963 Page 640 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt HOT SPR_500.0 (40553) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4119 Garrison-Taft #1 & Taft-Bell 500kV + RAS OPEN Shunt HOT SPR_500.0 (40553) #s BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt DWORSHAK_500.0 (40369) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 Page 641 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV OPEN Bus SNOKING_500.0 (41007) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 109.8 MVR BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 Page 642 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 Page 643 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BYPASS SeriesCap MIDPOINT_500.0 (60240) TO MIDHEM11_500.0 (61988) CKT 1 BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 Bus: Alvey 500 kV OPEN Bus ALVEY_500.0 (40051) Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV OPEN Bus KEELER_500.0 (40601) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Page 644 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV + RAS OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Brady-Antelope 230 kV + RAS OPEN Bus MLCK PHA_230.0 (62355) N-1: Brady-Antelope 230 kV + RAS OPEN Shunt AMPS_ 69.0 (65026) #1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Broadview-Garrison #1 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Cal Sub 120 kV Phase Shifter OPEN Transformer CAL SUB_120.0 (64025) TO CAL S PS_120.0 (64023) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 Page 645 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #s N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 1 N-1: Harry Allen 345 kV Phase Shifter OPEN Transformer HA PS_345.0 (18002) TO H ALLEN_345.0 (18001) CKT 2 N-1: Harry Allen 345 kV Phase Shifter OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Hatwai 500/230 kV Xfmr OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS HARNEY_115.0 (40507) TO 0 MVR N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR N-1: Hemingway-Summer Lake 500 kV SET SWITCHED SHUNT AT BUS WALAWALA_230.0 (45327) TO 40 MVR N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Hilltop 230 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 0 MVR N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 Page 646 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary 500/230 kV Xfmr SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 81 MVR N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Pinto-Four Corner 345 kV OPEN Shunt PINTO_138.0 (66230) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 2_ 13.8 (66228) #1 N-1: Pinto-Four Corner 345 kV CLOSE Shunt PINTO 3_ 13.8 (66229) #1 N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine POPULUS_500.0 (67794) TO CEDARHIL_500.0 (60159) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV OPEN MultiSectionLine CEDARHIL_500.0 (60159) TO HEMINWAY_500.0 (60155) CKT 2 N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS MIDPOINT_500.0 (60240) TO 400 MVR N-1: Populus-Cedar Hill-Hemingway 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Red Butte-Harry Allen 345 kV OPEN Shunt REDBUTTE_345.0 (66280) #1 N-1: Red Butte-Harry Allen 345 kV OPEN Shunt GONDER1_230.0 (64205) #v N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 Page 647 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS CLOSE Shunt GARRISON_500.0 (40459) #r N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR1EAST_500.0 (40451) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN1_500.0 (62013) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus GAR2EAST_500.0 (40453) N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Bus TOWN2_500.0 (62012) N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS AMPS_ 69.0 (65026) TO 30 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT2_ 13.8 (62333) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS OPEN Shunt MILLCKT1_ 13.8 (62332) #1 N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS TAFT_500.0 (41057) TO -186 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS BZ EGALL_ 50.0 (62348) TO 20.4 MVR N-2: Broadview-Garrison #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS JACKRABB_ 50.0 (62349) TO 19.7 MVR N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 Page 648 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde CLOSE Shunt ROBINSON_345.0 (64885) #b1 N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PINTO_138.0 (66230) TO 64 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS YORKCANY_115.0 (12091) TO 15 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS DURANGO_115.0 (79023) TO 40 MVR N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PEIGAN 4_240.0 (54165) TO 0 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV OPEN Bus IMNAHA_230.0 (60278) N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 Page 649 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop Page 650 of 776 Appendix J - 16la1sa_3400idnw_Path24 Base Case Studied Contingencies & Associated Actions Contingency Actions Taken in the Contingency N-2: Taft-Bell 500kV & Bell-Lancaster 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV + RAS OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #s N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 651 of 776 Appendix K 16hs2a_2250idnw_N_lh Base Case (Longhorn Terminus Sensitivity Study) Page 652 of 776 Appendix K – 16hs2a_2250idnw_lh Case Post-Transient Contingency Results Figure K5: 16hs2a_2250idnw_lh Case Pre-Contingency 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 225.1 Mvar 1.08 puPONDROSA 0.0 Mvar 1 5 8 7 M W - 1 3 7 M v a r 1 4 8 0 M W - 1 7 1 M v a r 1 6 8 4 M W - 2 2 1 M v a r 1568 MW -164 Mvar 296 MW 58 Mvar 259 MW 55 Mvar 228 MW 69 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.01 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.01 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.02 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.7 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.9 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.0 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 7 9 M W - 4 9 M v a r 1 7 1 9 M W - 1 0 5 M v a r 1733 MW -96 Mvar 1737 MW -98 Mvar 428 MW -26 Mvar 909 MW 20 Mvar 610 MW -100 Mvar 134 MW -57 Mvar 519 MW -95 Mvar 279 MW -4 Mvar 1139 MW -186 Mvar 1295 MW 57 Mvar 179 MW 186 Mvar 4 9 9 M W 8 M v a r 179 MW 116 Mvar 399 MW -16 Mvar 874 MW 83 Mvar 156 MW 15 Mvar 147 MW 11 Mvar 733 MW 76 Mvar 1.05 puANTICLIN 533 MW 21 Mvar 533 MW 19 Mvar 17 MW 81 Mvar 15 MW 69 Mvar 276 MW -56 Mvar 399 MW -16 Mvar 111 MW 37 Mvar 337 MW 36 Mvar 719 MW -195 Mvar 139 MW -62 Mvar 1 MW 41 Mvar 16 MW 45 Mvar 559 MW 156 Mvar 586 MW 25 Mvar 468 MW -268 Mvar 957 MW -98 Mvar 189 MW -10 Mvar 117 MW -51 Mvar 146 MW -51 Mvar 148 MW -22 Mvar 46 MW -0 Mvar 2 4 5 M W 3 4 M v a r 18 MW 25 Mvar 155 MW -52 Mvar 41 MW -55 Mvar 19 MW -30 Mvar 35 MW -27 Mvar 34 MW -30 Mvar 4 4 7 M W - 1 0 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 46 MW -0 Mvar 36 MW 8 Mvar 335 MW 40 Mvar 3 0 3 M W - 4 6 M v a r 54 MW -26 Mvar 371 MW -49 Mvar 287 MW -16 Mvar 287 MW -16 Mvar 296 MW -21 Mvar 298 MW -38 Mvar 195 MW -52 Mvar 252 MW -64 Mvar 1 4 M W - 4 6 M v a r 1 4 M W - 4 6 M v a r 964 MW -127 Mvar 895 MW 66 Mvar 50 MW 27 Mvar 449 MW -64 Mvar 547 MW -9 Mvar 508 MW -45 Mvar 455 MW 19 Mvar 433 MW 1 Mvar 426 MW 1 Mvar 487 MW -16 Mvar 498 MW -17 Mvar 785 MW -117 Mvar 3 9 1 M W 1 1 9 M v a r 1176 MW -128 Mvar 1 4 8 8 M W 4 M v a r 1 4 5 4 M W 3 2 M v a r 1 3 3 3 M W 2 M v a r 1335 MW -118 Mvar ID-NW = -2249 MW Longhorn = -1477 MW Summer Lake = -228 MW Lolo = -303 MW Walla Walla = -138 MW LaGrande = -117 MW Midpoint West = -1630 MW Borah West = -312 MW Idaho-Sierra = 499 MW N of John Day = 7799 MW COI = 4801 MW PDCI = 3101 MW ID-MT = -337 MW W of McNary = 2908 MW W of Slatt = 4773 MW Alturas Project = 8 MW Path C = -2001 MW Montana Southeast = 600 MW TOT 2B1 = 5 MW TOT 2C = 138 MW 228 MW -79 Mvar 171 MW 49 Mvar 1069 MW -25 Mvar 1217 MW 2 Mvar 27 M W -87 M v a r 9 6 9 M W - 1 2 9 M v a r 1418 MW -254 Mvar GRASSLND 1 4 1 8 M W - 3 8 3 M v a r Page 653 of 776 Appendix K – 16hs2a_2250idnw_lh Case Post-Transient Contingency Results Figure K6: 16hs2a_2250idnw_lh Case N-1: Hemingway-Longhorn 500 kV+PTSN Shunt 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 455.9 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 7 2 M W - 1 2 8 M v a r 1 6 4 9 M W - 1 5 9 M v a r 2 2 0 9 M W - 2 6 4 M v a r 2125 MW -257 Mvar 421 MW 43 Mvar 369 MW 44 Mvar 1033 MW -301 Mvar 1.03 puHEMINWAY 1.07 pu JOHN DAY 433.3 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 0.98 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD440.8 Mvar 1.06 puCDR SPRG 1.06 puBUCKLEY 0.96 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.98 puN POWDER 1.01 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 0.99 puQUARTZ 1.02 puBROWNLEE 155.7 Mvar 116.8 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.6 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.4 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.01 puIDAHO-NV 1.03 puKINPORT 186.8 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 7 4 M W 1 6 M v a r 2 0 3 5 M W 4 2 M v a r 2035 MW 53 Mvar 2040 MW 51 Mvar 444 MW -55 Mvar 1016 MW 58 Mvar 1054 MW -53 Mvar 578 MW -47 Mvar 984 MW -31 Mvar 614 MW 39 Mvar 571 MW -76 Mvar 948 MW 105 Mvar 50 MW 209 Mvar 4 3 5 M W - 0 M v a r 50 MW 141 Mvar 278 MW 20 Mvar 658 MW 122 Mvar 125 MW 27 Mvar 116 MW 24 Mvar 677 MW 69 Mvar 1.05 puANTICLIN 551 MW 17 Mvar 550 MW 15 Mvar 75 MW 67 Mvar 65 MW 56 Mvar 290 MW -41 Mvar 278 MW 20 Mvar 84 MW 57 Mvar 345 MW 36 Mvar 722 MW -197 Mvar 102 MW -50 Mvar 30 MW 31 Mvar 46 MW 34 Mvar 632 MW 142 Mvar 655 MW 3 Mvar 270 MW -242 Mvar 1157 MW -95 Mvar 267 MW 4 Mvar 191 MW -66 Mvar 218 MW -76 Mvar 151 MW -25 Mvar 49 MW 1 Mvar 3 2 8 M W 7 7 M v a r 95 MW 33 Mvar 262 MW -50 Mvar 3 MW -55 Mvar 20 MW 31 Mvar 4 MW 27 Mvar 5 MW 31 Mvar 5 4 6 M W 9 M v a r HORSEFLT 1.00 puBOISEBCH 92.7 Mvar 0.0 Mvar 1.00 puONTARIO 49 MW 1 Mvar 54 MW 19 Mvar 396 MW 69 Mvar 3 8 3 M W - 6 4 M v a r 117 MW -68 Mvar 415 MW -79 Mvar 332 MW -23 Mvar 332 MW -23 Mvar 342 MW -29 Mvar 345 MW -56 Mvar 225 MW -68 Mvar 291 MW -84 Mvar 1 2 M W - 4 6 M v a r 1 2 M W - 4 5 M v a r 1167 MW -50 Mvar 805 MW 85 Mvar 75 MW 34 Mvar 451 MW -44 Mvar 499 MW 2 Mvar 463 MW -36 Mvar 412 MW 27 Mvar 386 MW 6 Mvar 379 MW 6 Mvar 419 MW -12 Mvar 429 MW -13 Mvar 647 MW -121 Mvar 4 7 1 M W 1 6 6 M v a r 1541 MW -163 Mvar 1 6 4 0 M W - 1 2 M v a r 1 6 1 5 M W 2 1 M v a r 1 0 5 4 M W - 7 9 M v a r 1055 MW -166 Mvar ID-NW = -1839 MW Longhorn = 0 MW Summer Lake = -1033 MW Lolo = -383 MW Walla Walla = -239 MW LaGrande = -191 MW Midpoint West = -1370 MW Borah West = -120 MW Idaho-Sierra = 435 MW N of John Day = 7617 MW COI = 4977 MW PDCI = 3101 MW ID-MT = -383 MW W of McNary = 4051 MW W of Slatt = 5766 MW Alturas Project = 35 MW Path C = -1832 MW Montana Southeast = 685 MW TOT 2B1 = -46 MW TOT 2C = 86 MW 1049 MW -156 Mvar 35 MW 105 Mvar 899 MW 28 Mvar 1055 MW 29 Mvar 23 M W -86 M v a r 9 9 6 M W - 8 3 M v a r 0 MW 0 Mvar GRASSLND 0 M W 0 M v a r Page 654 of 776 Appendix K – 16hs2a_2250idnw_lh Case Post-Transient Contingency Results Figure K7: 16hs2a_2250idnw_lh Case BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr 1.04 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 222.8 Mvar 1.05 puPONDROSA 0.0 Mvar 1 7 7 2 M W - 1 2 5 M v a r 1 6 4 9 M W - 1 5 6 M v a r 2 2 0 2 M W - 2 4 6 M v a r 2117 MW -236 Mvar 421 MW 48 Mvar 368 MW 48 Mvar 1021 MW -257 Mvar 0.99 puHEMINWAY 1.07 pu JOHN DAY 432.9 Mvar 1.06 puMCNARY 1.06 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD440.7 Mvar 1.06 puCDR SPRG 1.06 puBUCKLEY 0.99 puLAGRANDE 51.6 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 154.6 Mvar 116.0 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.07 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-87.3 Mvar 1.07 puBORAH 1.02 puMIDPOINT 0.0 Mvar 181.3 Mvar 1.08 puPOPULUS 0.0 Mvar 1.02 puBORAH 0.0 Mvar 1.02 puADELAIDE 1.00 puIDAHO-NV 1.03 puKINPORT 185.3 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.03 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.1 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 7 1 M W 2 2 M v a r 2 0 3 3 M W 4 7 M v a r 2032 MW 61 Mvar 2037 MW 58 Mvar 444 MW -56 Mvar 1016 MW 59 Mvar 1052 MW -51 Mvar 576 MW -45 Mvar 981 MW -28 Mvar 612 MW 42 Mvar 566 MW -72 Mvar 965 MW 45 Mvar 56 MW 183 Mvar 4 3 1 M W - 6 M v a r 56 MW 116 Mvar 280 MW -5 Mvar 671 MW 84 Mvar 123 MW 18 Mvar 114 MW 14 Mvar 681 MW 60 Mvar 1.05 puANTICLIN 550 MW 24 Mvar 550 MW 22 Mvar 77 MW 78 Mvar 67 MW 65 Mvar 291 MW -43 Mvar 280 MW -5 Mvar 85 MW 51 Mvar 346 MW 39 Mvar 724 MW -197 Mvar 103 MW -58 Mvar 32 MW 37 Mvar 48 MW 41 Mvar 630 MW 158 Mvar 655 MW 14 Mvar 262 MW -233 Mvar 1155 MW -91 Mvar 277 MW -20 Mvar 200 MW -39 Mvar 228 MW -48 Mvar 152 MW -25 Mvar 49 MW 0 Mvar 3 3 8 M W 5 4 M v a r 96 MW 35 Mvar 264 MW -49 Mvar 3 MW -56 Mvar 20 MW 32 Mvar 4 MW 28 Mvar 5 MW 33 Mvar 5 4 8 M W 1 4 M v a r HORSEFLT 0.99 puBOISEBCH 90.8 Mvar 0.0 Mvar 0.99 puONTARIO 49 MW 0 Mvar 54 MW 19 Mvar 397 MW 71 Mvar 3 8 4 M W - 6 2 M v a r 124 MW -43 Mvar 418 MW -72 Mvar 334 MW -14 Mvar 334 MW -14 Mvar 344 MW -19 Mvar 347 MW -46 Mvar 226 MW -66 Mvar 292 MW -82 Mvar 1 2 M W - 4 9 M v a r 1 2 M W - 4 8 M v a r 1164 MW -47 Mvar 806 MW 85 Mvar 74 MW 35 Mvar 450 MW -44 Mvar 499 MW 2 Mvar 463 MW -37 Mvar 412 MW 26 Mvar 386 MW 5 Mvar 379 MW 5 Mvar 419 MW -13 Mvar 429 MW -14 Mvar 647 MW -124 Mvar 4 7 2 M W 1 6 8 M v a r 1539 MW -161 Mvar 1 6 4 0 M W - 1 0 M v a r 1 6 1 5 M W 2 3 M v a r 1 0 5 9 M W - 9 5 M v a r 1060 MW -184 Mvar ID-NW = -1840 MW Longhorn = 0 MW Summer Lake = -1021 MW Lolo = -384 MW Walla Walla = -242 MW LaGrande = -200 MW Midpoint West = -1363 MW Borah West = -116 MW Idaho-Sierra = 431 MW N of John Day = 7618 MW COI = 4980 MW PDCI = 3101 MW ID-MT = -380 MW W of McNary = 4042 MW W of Slatt = 5759 MW Alturas Project = 36 MW Path C = -1829 MW Montana Southeast = 686 MW TOT 2B1 = -47 MW TOT 2C = 85 MW 1036 MW -118 Mvar 0 MW 0 Mvar 900 MW 26 Mvar 1057 MW 27 Mvar 25 M W -92 M v a r 9 9 5 M W - 8 2 M v a r 0 MW 0 Mvar GRASSLND 0 M W 0 M v a r Page 655 of 776 Appendix K – 16hs2a_2250idnw_lh Case Post-Transient Contingency Results Figure K8: 16hs2a_2250idnw_lh Case BF LH Hemingway-Longhorn 500 kV & McNary-Longhorn 500 kV 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.05 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 456.5 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 6 6 M W - 1 2 9 M v a r 1 6 4 4 M W - 1 5 9 M v a r 2 1 9 7 M W - 2 6 5 M v a r 2112 MW -256 Mvar 419 MW 43 Mvar 366 MW 44 Mvar 1018 MW -292 Mvar 1.03 puHEMINWAY 1.07 pu JOHN DAY 433.2 Mvar 1.06 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 puCOYOTE 1.07 puLOW MON 0.0 Mvar 0.99 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.07 puHANFORD440.1 Mvar 1.06 puCDR SPRG 1.06 puBUCKLEY 0.99 puLAGRANDE 51.5 Mvar 1.03 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.02 puBROWNLEE 156.1 Mvar 117.1 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.02 puHATWAI 1.07 puHATWAI 1.07 puLOW GRAN 1.07 puCEN FERY 0.0 Mvar 1.07 puLIT GOOS 1.01 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.7 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.5 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.01 puIDAHO-NV 1.03 puKINPORT 186.9 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 1 1 M W 2 9 M v a r 1 9 3 6 M W 3 3 M v a r 2055 MW 43 Mvar 2061 MW 40 Mvar 409 MW -41 Mvar 958 MW 51 Mvar 778 MW -28 Mvar 302 MW -7 Mvar 690 MW -2 Mvar 397 MW 78 Mvar 0 MW 0 Mvar 943 MW 111 Mvar 49 MW 211 Mvar 4 3 7 M W 0 M v a r 49 MW 142 Mvar 278 MW 22 Mvar 653 MW 126 Mvar 126 MW 28 Mvar 116 MW 24 Mvar 676 MW 69 Mvar 1.05 puANTICLIN 551 MW 17 Mvar 550 MW 15 Mvar 74 MW 67 Mvar 64 MW 56 Mvar 289 MW -41 Mvar 278 MW 22 Mvar 84 MW 58 Mvar 345 MW 36 Mvar 722 MW -197 Mvar 103 MW -49 Mvar 29 MW 30 Mvar 45 MW 33 Mvar 632 MW 141 Mvar 656 MW 3 Mvar 158 MW -209 Mvar 1404 MW -181 Mvar 284 MW -22 Mvar 206 MW -44 Mvar 234 MW -54 Mvar 147 MW -23 Mvar 44 MW 1 Mvar 3 4 5 M W 5 5 M v a r 116 MW 30 Mvar 269 MW -49 Mvar 7 MW 53 Mvar 30 MW 29 Mvar 14 MW 26 Mvar 15 MW 30 Mvar 5 5 2 M W 7 M v a r HORSEFLT 1.00 puBOISEBCH 92.8 Mvar 0.0 Mvar 1.00 puONTARIO 44 MW 1 Mvar 56 MW 18 Mvar 395 MW 69 Mvar 3 8 5 M W - 6 4 M v a r 129 MW -49 Mvar 418 MW -80 Mvar 336 MW -22 Mvar 336 MW -22 Mvar 346 MW -28 Mvar 350 MW -55 Mvar 226 MW -70 Mvar 292 MW -86 Mvar 1 2 M W - 4 5 M v a r 1 2 M W - 4 5 M v a r 1418 MW -32 Mvar 851 MW 83 Mvar 144 MW 32 Mvar 575 MW -42 Mvar 494 MW 5 Mvar 459 MW -33 Mvar 408 MW 30 Mvar 381 MW 8 Mvar 374 MW 9 Mvar 412 MW -9 Mvar 422 MW -10 Mvar 633 MW -115 Mvar 4 7 0 M W 1 6 5 M v a r 1287 MW -80 Mvar 1 6 3 6 M W - 1 2 M v a r 1 6 1 0 M W 2 1 M v a r 1 0 5 8 M W - 7 6 M v a r 1059 MW -163 Mvar ID-NW = -1847 MW Longhorn = 0 MW Summer Lake = -1018 MW Lolo = -385 MW Walla Walla = -246 MW LaGrande = -206 MW Midpoint West = -1375 MW Borah West = -123 MW Idaho-Sierra = 437 MW N of John Day = 7637 MW COI = 4969 MW PDCI = 3101 MW ID-MT = -384 MW W of McNary = 3785 MW W of Slatt = 5604 MW Alturas Project = 34 MW Path C = -1835 MW Montana Southeast = 687 MW TOT 2B1 = -45 MW TOT 2C = 87 MW 1033 MW -157 Mvar 25 MW 106 Mvar 691 MW 84 Mvar 849 MW 59 Mvar 23 M W -86 M v a r 1 0 0 9 M W - 8 1 M v a r 0 MW 0 Mvar GRASSLND 0 M W 0 M v a r Page 656 of 776 Appendix K – 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 364.1 674.1 650.0 103.7% 780.0 86.4% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 637.1 1194.7 979.0 122.0% 1287.7 92.8% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 303.9 767.0 722.9 106.1% 1265.2 60.6% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1713.0 2963.3 2442.0 121.3% 3235.5 91.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1713.0 2963.3 2199.9 134.7% 3235.5 91.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALROU21 Branch Amp 1712.1 2956.2 2666.9 110.8% 3999.9 73.9% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1702.9 2945.2 2667.0 110.4% 4000.0 73.6% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALROU11 Branch Amp 1666.6 2880.5 2699.7 106.7% 3999.9 72.0% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at ROUND MT Branch Amp 1658.9 2864.7 2699.7 106.1% 4000.0 71.6% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1713.0 3000.6 2442.0 122.9% 3235.5 92.7% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1713.0 3000.6 2199.9 136.4% 3235.5 92.7% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1712.1 2993.2 2666.9 112.2% 3999.9 74.8% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1702.9 2982.6 2667.0 111.8% 4000.0 74.6% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 269.9 327.3 320.0 102.3% 370.0 88.5% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.6 1041.4 950.0 109.6% 1286.0 81.0% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 269.9 333.8 320.0 104.3% 370.0 90.2% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.6 1053.1 950.0 110.9% 1286.0 81.9% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations Page 657 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 897.2 1027.4 1009.1 101.8% 1285.2 79.9% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 814.9 800.0 101.9% 1199.9 67.9% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 765.9 958.7 920.0 104.2% 1046.8 91.6% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations Page 658 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1356.6 1237.0 109.7% 1396.0 97.2% BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1012.6 920.0 110.1% 1046.8 96.7% BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 834.4 800.0 104.3% 1199.9 69.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1030.8 920.0 112.0% 1046.8 98.5% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1370.3 1237.0 110.8% 1396.0 98.2% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 810.4 800.0 101.3% 1199.9 67.5% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1298.7 1237.0 105.0% 1396.0 93.0% BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 765.9 971.9 920.0 105.6% 1046.8 92.9% BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 819.5 800.0 102.4% 1199.9 68.3% BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1357.0 1237.0 109.7% 1396.0 97.2% BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1009.5 920.0 109.7% 1046.8 96.4% BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 835.3 800.0 104.4% 1199.9 69.6% BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1363.3 1237.0 110.2% 1396.0 97.7% BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1012.0 920.0 110.0% 1046.8 96.7% BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 836.7 800.0 104.6% 1199.9 69.7% BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1366.6 1237.0 110.5% 1396.0 97.9% BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1010.7 920.0 109.9% 1046.8 96.6% BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 836.3 800.0 104.5% 1199.9 69.7% BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr No Violations BF LH Longhorn-Coyote & Longhorn-Slatt 500 kV No Violations BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr No Violations BF LH McNary-Longhorn & Longhorn 500/230 Xfmr No Violations BF LH McNary-Longhorn & Longhorn-Coyote 500 kV No Violations BF LH McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF Lolo 230kV No Violations BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 No Violations BF McNary 230 kV SECT 3 No Violations BF PGE Grassland-Coyote 500 kV & Carty Gas Project No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen No Violations Bus: Alvey 500 kV + RAS No Violations Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS No Violations Page 659 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Allston-Keeler 500 kV + RAS No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 897.2 1071.9 1009.1 106.2% 1285.2 83.4% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1713.0 2585.0 2442.0 105.9% 3235.5 79.9% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1713.0 2585.0 2199.9 117.5% 3235.5 79.9% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1768.1 2389.5 2199.9 108.6% 3280.5 72.8% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1753.2 2369.3 2199.9 107.7% 3280.5 72.2% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2596.0 2477.9 104.8% 3999.9 64.9% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 897.2 1016.4 1009.1 100.7% 1285.2 79.1% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 637.1 1152.1 979.0 117.7% 1287.7 89.5% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 815.7 800.0 102.0% 1199.9 68.0% N-1: Dworshak-Hatwai 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.961 0.911 -5.20% N-1: Dworshak-Hatwai 500 kV + RAS+PTSN MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 818.0 800.0 102.2% 1199.9 68.2% Page 660 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 765.9 958.3 920.0 104.2% 1046.8 91.6% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 765.9 965.8 920.0 105.0% 1046.8 92.3% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1355.1 1237.0 109.5% 1396.0 97.1% N-1: Hemingway-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1011.5 920.0 109.9% 1046.8 96.6% N-1: Hemingway-Longhorn 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 833.0 800.0 104.1% 1199.9 69.4% N-1: Hemingway-Longhorn 500 kV AMPS (65025) % Δ Volts 0.967 0.902 -6.72% N-1: Hemingway-Longhorn 500 kV PTRSNFLT (62030) % Δ Volts 0.961 0.885 -7.91% N-1: Hemingway-Longhorn 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1689.8 2903.2 2400.0 121.0% 3199.9 90.7% N-1: Hemingway-Longhorn 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1696.5 2923.3 2400.0 121.8% 3800.0 76.9% N-1: Hemingway-Longhorn 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1088.5 1349.9 1237.0 109.1% 1396.0 96.7% N-1: Hemingway-Longhorn 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 765.9 1007.0 920.0 109.5% 1046.8 96.2% N-1: Hemingway-Longhorn 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 834.0 800.0 104.2% 1199.9 69.5% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations Page 661 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1713.0 2965.5 2442.0 121.4% 3235.5 91.7% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1713.0 2965.5 2199.9 134.8% 3235.5 91.7% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1712.1 2958.1 2666.9 110.9% 3999.9 74.0% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1702.9 2947.7 2667.0 110.5% 4000.0 73.7% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1666.6 2937.7 2699.7 108.8% 3999.9 73.4% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1658.9 2924.5 2699.7 108.3% 4000.0 73.1% N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV No Violations N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV No Violations N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at HORIZN Branch MVA 269.9 350.1 320.0 109.4% 370.0 94.6% N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.6 1180.7 950.0 124.3% 1286.0 91.8% N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 269.9 325.8 320.0 101.8% 370.0 88.1% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.6 1036.2 950.0 109.1% 1286.0 80.6% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1768.1 3179.2 2199.9 144.5% 3280.5 96.9% Page 662 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUTAB21 Branch Amp 1768.1 3179.2 2667.0 119.2% 4000.0 79.5% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at TABLE MT Branch Amp 1758.0 3165.3 2667.0 118.7% 4000.0 79.1% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2892.7 2477.9 116.7% 3999.9 72.3% N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 1945.6 2892.7 2667.0 108.5% 4000.0 72.3% N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at VACA-DIX Branch Amp 1919.6 2872.2 2667.0 107.7% 4000.0 71.8% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1453.5 2598.1 2230.0 116.5% 3555.9 73.1% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.6 814.3 800.0 101.8% 1199.9 67.9% N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 897.2 1035.8 1009.1 102.6% 1285.2 80.6% N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 897.2 1101.3 1009.1 109.1% 1285.2 85.7% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV BRIDGER (60085) -> BRI3MI11 (61999) CKT 1 at BRIDGER Branch Amp 1190.4 1731.0 1600.0 108.2% 1919.0 90.2% N-2: Bridger-Populus #1 & #2 345 kV SODA (66385) -> GRACE (65695) CKT 1 at SODA Branch Amp 392.0 539.9 539.7 100.0% 644.3 83.8% N-2: Bridger-Populus #1 & #2 345 kV BRI3MI11 (61999) -> 3MIKNOLL (60084) CKT 1 at 3MIKNOLL Branch Amp 1163.2 1686.8 1650.1 102.2% 2227.4 75.7% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> BRIDGER (65220) CKT 2 at BRIDGER Branch MVA 114.0 206.4 200.0 103.2% 220.0 93.8% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> BRIDGER (65220) CKT 1 at BRIDGER Branch MVA 112.1 203.0 200.0 101.5% 220.0 92.3% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> BRIDGER (65220) CKT 3 at BRIDGER Branch MVA 112.1 203.0 200.0 101.5% 220.0 92.3% N-2: Broadview-Garrisont #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 765.9 937.8 920.0 101.9% 1046.8 89.6% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations Page 663 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1689.8 2739.0 2400.0 114.1% 3199.9 85.6% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1713.0 2382.8 2199.9 108.3% 3235.5 73.6% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1768.1 2379.5 2199.9 108.2% 3280.5 72.5% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1696.5 2753.3 2400.0 114.7% 3800.0 72.5% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1753.2 2359.4 2199.9 107.2% 3280.5 71.9% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2549.0 2477.9 102.9% 3999.9 63.7% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1488.8 2181.9 2134.0 102.2% 3499.9 62.3% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1470.7 2152.3 2134.0 100.9% 3499.9 61.5% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1689.8 2524.1 2400.0 105.2% 3199.9 78.9% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1696.5 2542.8 2400.0 105.9% 3800.0 66.9% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS No Violations N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV No Violations N-2: Grassland-Coyote & Slatt - Longhorn 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1696.5 3292.2 2400.0 137.2% 3800.0 86.6% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1430.3 3225.4 2700.0 119.5% 4000.0 80.6% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1615.3 3125.6 2400.0 130.2% 3800.0 82.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1600.6 3112.0 2400.0 129.7% 3800.0 81.9% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1615.3 3176.2 2400.0 132.3% 3800.0 83.6% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1600.6 3165.6 2400.0 131.9% 3800.0 83.3% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1840.8 3121.7 2900.0 107.6% 4350.0 71.8% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH12 Branch Amp 1844.3 3469.8 3000.0 115.7% 4050.0 85.7% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at HORIZN Branch MVA 269.9 346.7 320.0 108.3% 370.0 93.7% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.6 1181.0 950.0 124.3% 1286.0 91.8% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 79.2 96.3 94.0 102.5% 139.0 69.3% N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS No Violations N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1842.0 3905.7 2667.4 146.4% 4099.2 95.3% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1808.4 3792.1 2667.4 142.2% 4099.2 92.5% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPOLI11 Branch Amp 1808.4 3792.1 2667.4 142.2% 4099.2 92.5% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1922.7 3239.2 2993.0 108.2% 4514.9 71.7% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1922.7 3239.2 2993.0 108.2% 4514.9 71.7% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1891.8 3204.3 2993.0 107.1% 4514.9 71.0% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1891.8 3204.3 2993.0 107.1% 4514.9 71.0% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1870.5 3165.6 2993.0 105.8% 4514.9 70.1% Page 664 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) % Δ Volts 1.056 1.003 -5.02% N-2: Malin-Round Mtn #1 & #2 500 kV WDJCT L1 (45522) % Δ Volts 1.007 0.951 -5.56% N-2: Malin-Round Mtn #1 & #2 500 kV WEED JCT (45525) % Δ Volts 1.007 0.951 -5.56% N-2: Malin-Round Mtn #1 & #2 500 kV WEED (45524) % Δ Volts 1.003 0.946 -5.68% N-2: Malin-Round Mtn #1 & #2 500 kV MTSHASTA (44970) % Δ Volts 0.989 0.931 -5.86% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) % Δ Volts 1.041 0.978 -6.05% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV HORSE HV (40547) % Δ Volts 1.032 0.980 -5.04% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV No Violations N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 269.9 327.8 320.0 102.5% 370.0 88.6% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.6 1041.9 950.0 109.7% 1286.0 81.0% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 670.9 860.1 830.9 103.5% 926.3 92.9% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1842.0 3598.8 2667.4 134.9% 4099.2 87.8% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1808.4 3500.2 2667.4 131.2% 4099.2 85.4% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1808.4 3489.4 2667.4 130.8% 4099.2 85.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1922.7 3436.0 2993.0 114.8% 4514.9 76.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1922.7 3436.0 2993.0 114.8% 4514.9 76.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1891.8 3415.3 2993.0 114.1% 4514.9 75.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1891.8 3415.3 2993.0 114.1% 4514.9 75.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1870.5 3382.3 2993.0 113.0% 4514.9 74.9% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 286.9 922.6 825.9 111.7% 976.5 94.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 233.9 864.1 825.1 104.7% 975.0 88.6% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 393.2 470.8 462.9 101.7% 579.9 81.2% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1945.6 2487.0 2477.9 100.4% 3999.9 62.2% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations Page 665 of 776 Appendix K - 16hs2a_2250idnw_lh Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 666 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) Page 667 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV CLOSE MultiSectionLine PEARL_500.0 (40827) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 Page 668 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_500.0 (40521) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_230.0 (40519) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line NPULLMAN_115.0 (48291) TO SHAWNEE_115.0 (48383) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCITYT_115.0 (48245) TO SPULLMAN_115.0 (48413) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS HOT SPR_500.0 (40553) TO -148.3 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4700 Hatwai 500kV & 230 kV + RAS CLOSE Line LEON_115.0 (48183) TO MOSCCITY_115.0 (48243) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCCITY_115.0 (48243) TO MOSCITYT_115.0 (48245) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS N LEWIST_115.0 (48253) TO 44.4 MVR BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 Page 669 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) Page 670 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1_230.0 (99000) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1A_230.0 (99001) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 1_ 34.5 (99003) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 C1_ 34.5 (99004) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 W1_ 0.6 (99005) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 2_ 34.5 (99006) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 C2_ 34.5 (99007) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 W2_ 0.6 (99008) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 1_ 34.5 (99009) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 C1_ 34.5 (99010) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 W1_ 0.6 (99011) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 2_ 34.5 (99012) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 C2_ 34.5 (99013) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 W2_ 0.6 (99014) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 1_ 34.5 (99015) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 C1_ 34.5 (99016) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 W1_ 0.6 (99017) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 2_ 34.5 (99018) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 C2_ 34.5 (99019) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 W2_ 0.6 (99020) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 1_ 34.5 (99021) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 C1_ 34.5 (99022) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 W1_ 0.6 (99023) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 2_ 34.5 (99024) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 C2_ 34.5 (99025) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 W2_ 0.6 (99026) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 1_ 34.5 (99103) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 C1_ 34.5 (99104) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 W1_ 0.6 (99105) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 2_ 34.5 (99106) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 C2_ 34.5 (99107) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 W2_ 0.6 (99108) BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR BF LH Hemingway-Longhorn & Longhorn 500/230 Xfmr SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR Page 671 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF LH Hemingway-Longhorn & Longhorn-Coyote 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR BF LH Hemingway-Longhorn & Longhorn-Slatt 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR BF LH Hemingway-Longhorn & McNary-Longhorn 500 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1_230.0 (99000) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1A_230.0 (99001) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0362 1_ 34.5 (99003) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0362 C1_ 34.5 (99004) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0362 W1_ 0.6 (99005) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0362 2_ 34.5 (99006) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0362 C2_ 34.5 (99007) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0362 W2_ 0.6 (99008) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0363 1_ 34.5 (99009) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0363 C1_ 34.5 (99010) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0363 W1_ 0.6 (99011) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0363 2_ 34.5 (99012) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0363 C2_ 34.5 (99013) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0363 W2_ 0.6 (99014) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0365 1_ 34.5 (99015) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0365 C1_ 34.5 (99016) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0365 W1_ 0.6 (99017) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0365 2_ 34.5 (99018) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0365 C2_ 34.5 (99019) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0365 W2_ 0.6 (99020) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0366 1_ 34.5 (99021) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0366 C1_ 34.5 (99022) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0366 W1_ 0.6 (99023) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0366 2_ 34.5 (99024) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0366 C2_ 34.5 (99025) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0366 W2_ 0.6 (99026) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0341 1_ 34.5 (99103) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0341 C1_ 34.5 (99104) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0341 W1_ 0.6 (99105) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0341 2_ 34.5 (99106) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0341 C2_ 34.5 (99107) BF LH Longhorn-Coyote & Longhorn 500/230 Xfmr OPEN Bus G0341 W2_ 0.6 (99108) BF LH Longhorn-Coyote & Longhorn-Slatt 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 BF LH Longhorn-Coyote & Longhorn-Slatt 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF LH Longhorn-Coyote & Longhorn-Slatt 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus COYOTETP_500.0 (40725) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1_230.0 (99000) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1A_230.0 (99001) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0362 1_ 34.5 (99003) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0362 C1_ 34.5 (99004) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0362 W1_ 0.6 (99005) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0362 2_ 34.5 (99006) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0362 C2_ 34.5 (99007) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0362 W2_ 0.6 (99008) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0363 1_ 34.5 (99009) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0363 C1_ 34.5 (99010) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0363 W1_ 0.6 (99011) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0363 2_ 34.5 (99012) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0363 C2_ 34.5 (99013) Page 672 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0363 W2_ 0.6 (99014) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0365 1_ 34.5 (99015) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0365 C1_ 34.5 (99016) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0365 W1_ 0.6 (99017) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0365 2_ 34.5 (99018) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0365 C2_ 34.5 (99019) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0365 W2_ 0.6 (99020) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0366 1_ 34.5 (99021) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0366 C1_ 34.5 (99022) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0366 W1_ 0.6 (99023) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0366 2_ 34.5 (99024) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0366 C2_ 34.5 (99025) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0366 W2_ 0.6 (99026) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0341 1_ 34.5 (99103) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0341 C1_ 34.5 (99104) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0341 W1_ 0.6 (99105) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0341 2_ 34.5 (99106) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0341 C2_ 34.5 (99107) BF LH Longhorn-Slatt & Longhorn 500/230 Xfmr OPEN Bus G0341 W2_ 0.6 (99108) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1_230.0 (99000) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus LNGHRN1A_230.0 (99001) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 1_ 34.5 (99003) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 C1_ 34.5 (99004) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 W1_ 0.6 (99005) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 2_ 34.5 (99006) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 C2_ 34.5 (99007) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0362 W2_ 0.6 (99008) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 1_ 34.5 (99009) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 C1_ 34.5 (99010) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 W1_ 0.6 (99011) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 2_ 34.5 (99012) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 C2_ 34.5 (99013) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0363 W2_ 0.6 (99014) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 1_ 34.5 (99015) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 C1_ 34.5 (99016) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 W1_ 0.6 (99017) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 2_ 34.5 (99018) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 C2_ 34.5 (99019) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0365 W2_ 0.6 (99020) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 1_ 34.5 (99021) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 C1_ 34.5 (99022) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 W1_ 0.6 (99023) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 2_ 34.5 (99024) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 C2_ 34.5 (99025) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0366 W2_ 0.6 (99026) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 1_ 34.5 (99103) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 C1_ 34.5 (99104) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 W1_ 0.6 (99105) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 2_ 34.5 (99106) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 C2_ 34.5 (99107) BF LH McNary-Longhorn & Longhorn 500/230 Xfmr OPEN Bus G0341 W2_ 0.6 (99108) BF LH McNary-Longhorn & Longhorn-Coyote 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF LH McNary-Longhorn & Longhorn-Coyote 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 BF LH McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF LH McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 BF LH McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) Page 673 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 2 SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) BF McNary 230 kV SECT 3 OPEN Bus FRANKLIN_230.0 (40443) BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Page 674 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) Page 675 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Hatwai 500 kV + RAS+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 Page 676 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Longhorn 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 N-1: Hemingway-Longhorn 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Longhorn 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Longhorn 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Longhorn 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 N-1: Hemingway-Longhorn 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Longhorn 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Longhorn 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Longhorn 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Longhorn 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Longhorn 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Longhorn 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-1: Hemingway-Longhorn 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO LONGHORN_500.0 (40724) CKT 1 N-1: Hemingway-Longhorn 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Hemingway-Longhorn 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Longhorn 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV CLOSE Shunt HUMBOLT1_ 24.9 (64216) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 Page 677 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Roundup 230 kV SET SWITCHED SHUNT AT BUS LAGRANDE_230.0 (40621) TO 52.2 MVR N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 Page 678 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Bus BETHEL5_500.0 (43041) N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Bus BETHEL5_500.0 (43041) N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS POPULUS_345.0 (67790) TO 200 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 Page 679 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt PTRSNFLT_230.0 (62030) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt OREBASIN_230.0 (66145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt FRANNIE2_ 34.5 (67145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARLAND1_ 34.5 (67147) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 Page 680 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 Page 681 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Double Palo Verde SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) Page 682 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 Page 683 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) Page 684 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) Page 685 of 776 Appendix K - 16hs2a_2250idnw_N_lh Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 686 of 776 Appendix L 16hs2a_2250idnw_N_nvmod Base Case (NV Energy Updates Sensitivity Study Page 687 of 776 Appendix L – 16hs2a_2250idnw_nvmod Case Post-Transient Contingency Results Figure L9: 16hs2a_2250idnw_nvmod Case Pre-Contingency 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 226.4 Mvar 1.09 puPONDROSA 0.0 Mvar 1 5 8 3 M W - 1 4 0 M v a r 1 4 7 6 M W - 1 7 3 M v a r 1 7 0 5 M W - 2 2 8 M v a r 1593 MW -172 Mvar 308 MW 56 Mvar 269 MW 54 Mvar 288 MW 50 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND 175.0 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.04 puWALLULA 0.0 Mvar 1.08 puHANFORD446.6 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 1.04 puLAGRANDE 56.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.04 puN POWDER 1.02 puTALBOT QUARTZTP 1.03 puWALA AVA 1.01 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 0.0 Mvar 1.08 puCEDARHIL-88.0 Mvar 1.08 puBORAH 1.02 puMIDPOINT 0.0 Mvar 182.5 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.2 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 7 1 M W - 5 0 M v a r 1 6 9 9 M W - 1 1 3 M v a r 1745 MW -98 Mvar 1749 MW -101 Mvar 416 MW -27 Mvar 860 MW 9 Mvar 1530 MW -118 Mvar 1055 MW -77 Mvar 887 MW -106 Mvar 145 MW -23 Mvar 950 MW -159 Mvar 1287 MW 78 Mvar 176 MW 193 Mvar 4 9 9 M W 9 M v a r 176 MW 123 Mvar 398 MW -8 Mvar 866 MW 97 Mvar 157 MW 18 Mvar 148 MW 14 Mvar 731 MW 79 Mvar 1.05 puANTICLIN 533 MW 20 Mvar 532 MW 18 Mvar 17 MW 79 Mvar 15 MW 67 Mvar 276 MW -52 Mvar 398 MW -8 Mvar 111 MW 38 Mvar 336 MW 35 Mvar 719 MW -195 Mvar 139 MW -59 Mvar 0 MW 40 Mvar 15 MW 43 Mvar 559 MW 152 Mvar 587 MW 23 Mvar 423 MW -266 Mvar 1038 MW -115 Mvar 202 MW -37 Mvar 130 MW -25 Mvar 158 MW -23 Mvar 147 MW -22 Mvar 45 MW -0 Mvar 2 5 9 M W 9 M v a r 28 MW 24 Mvar 164 MW -52 Mvar 36 MW -55 Mvar 14 MW -29 Mvar 30 MW -26 Mvar 29 MW -30 Mvar 4 5 5 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.2 Mvar 0.0 Mvar 1.02 puONTARIO 45 MW -0 Mvar 38 MW 8 Mvar 339 MW 42 Mvar 3 0 9 M W - 4 7 M v a r 64 MW -3 Mvar 374 MW -53 Mvar 291 MW -16 Mvar 291 MW -16 Mvar 300 MW -21 Mvar 303 MW -40 Mvar 197 MW -52 Mvar 255 MW -64 Mvar 1 4 M W - 4 5 M v a r 1 4 M W - 4 5 M v a r 1045 MW -119 Mvar 902 MW 63 Mvar 71 MW 27 Mvar 483 MW -65 Mvar 544 MW -8 Mvar 505 MW -45 Mvar 453 MW 19 Mvar 430 MW 1 Mvar 423 MW 2 Mvar 483 MW -15 Mvar 494 MW -17 Mvar 778 MW -117 Mvar 3 9 6 M W 1 2 1 M v a r 1122 MW -123 Mvar 1 4 8 3 M W 3 M v a r 1 4 5 0 M W 3 0 M v a r 1 2 9 7 M W - 1 M v a r 1299 MW -116 Mvar ID-NW = -2249 MW Grassland = -1390 MW Summer Lake = -288 MW Lolo = -309 MW Walla Walla = -146 MW LaGrande = -130 MW Midpoint West = -1632 MW Borah West = -313 MW Idaho-Sierra = 499 MW N of John Day = 7800 MW COI = 4801 MW PDCI = 3101 MW ID-MT = -338 MW W of McNary = 4294 MW W of Slatt = 4730 MW Alturas Project = 7 MW Path C = -2000 MW Montana Southeast = 599 MW TOT 2B1 = -1 MW TOT 2C = 132 MW 289 MW -91 Mvar 159 MW 57 Mvar 1005 MW -11 Mvar 1154 MW 5 Mvar 28 M W -86 M v a r 9 7 2 M W - 1 2 9 M v a r 1 3 9 0 M W 1 6 9 M v a r 1335 MW -318 Mvar Page 688 of 776 Appendix L – 16hs2a_2250idnw_nvmod Case Post-Transient Contingency Results Figure L10: 16hs2a_2250idnw_nvmod Case N-1: Hemingway-Grassland 500 kV + PTSN Shunt 1.05 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.05 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.06 puPONDROSB 1.06 puGRIZZLY 0.0 Mvar 1.05 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 456.5 Mvar 1.06 puPONDROSA 0.0 Mvar 1 7 5 8 M W - 1 2 7 M v a r 1 6 3 7 M W - 1 5 8 M v a r 2 2 0 3 M W - 2 5 6 M v a r 2121 MW -246 Mvar 428 MW 45 Mvar 375 MW 46 Mvar 1050 MW -294 Mvar 1.03 puHEMINWAY 1.07 pu JOHN DAY 436.0 Mvar 1.07 puMCNARY 1.07 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.07 puASHE 0.0 Mvar 1.07 pu GRASSLND 172.7 Mvar 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD442.4 Mvar 1.07 puCDR SPRG 1.06 puBUCKLEY 1.00 puLAGRANDE 52.1 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 1.00 puN POWDER 1.01 puTALBOT QUARTZTP 1.02 puWALA AVA 0.99 puHURICANE 1.01 puQUARTZ 1.02 puBROWNLEE 156.0 Mvar 117.0 Mvar 1.02 puDRYCREEK 0.0 Mvar 1.02 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.01 puOXBOW 1.09 puMIDPOINT 0.0 Mvar 1.09 puCEDARHIL-88.7 Mvar 1.08 puBORAH 1.03 puMIDPOINT 0.0 Mvar 184.4 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.01 puIDAHO-NV 1.03 puKINPORT 186.8 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 1.08 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.4 Mvar 0.0 Mvar 0.0 Mvar 1.07 puMARION 0.0 Mvar 1 5 6 6 M W 2 3 M v a r 2 0 2 0 M W 4 1 M v a r 2021 MW 43 Mvar 2026 MW 41 Mvar 437 MW -51 Mvar 1013 MW 63 Mvar 1058 MW -108 Mvar 583 MW -88 Mvar 988 MW -39 Mvar 622 MW 89 Mvar 580 MW -117 Mvar 960 MW 111 Mvar 55 MW 210 Mvar 4 3 8 M W 1 M v a r 55 MW 142 Mvar 284 MW 21 Mvar 663 MW 125 Mvar 127 MW 28 Mvar 118 MW 24 Mvar 678 MW 70 Mvar 1.05 puANTICLIN 549 MW 17 Mvar 548 MW 15 Mvar 72 MW 68 Mvar 62 MW 57 Mvar 289 MW -39 Mvar 284 MW 21 Mvar 86 MW 56 Mvar 343 MW 36 Mvar 722 MW -197 Mvar 104 MW -49 Mvar 27 MW 31 Mvar 44 MW 34 Mvar 627 MW 141 Mvar 651 MW 4 Mvar 269 MW -257 Mvar 1152 MW -95 Mvar 274 MW -23 Mvar 198 MW -40 Mvar 225 MW -48 Mvar 152 MW -25 Mvar 49 MW 0 Mvar 3 3 5 M W 5 0 M v a r 94 MW 33 Mvar 261 MW -50 Mvar 4 MW -56 Mvar 19 MW 31 Mvar 3 MW 28 Mvar 4 MW 32 Mvar 5 4 4 M W 9 M v a r HORSEFLT 1.00 puBOISEBCH 92.8 Mvar 0.0 Mvar 1.00 puONTARIO 49 MW 0 Mvar 54 MW 18 Mvar 396 MW 69 Mvar 3 8 2 M W - 6 3 M v a r 123 MW -42 Mvar 415 MW -79 Mvar 333 MW -23 Mvar 333 MW -23 Mvar 343 MW -29 Mvar 346 MW -55 Mvar 225 MW -67 Mvar 291 MW -83 Mvar 1 2 M W - 4 5 M v a r 1 2 M W - 4 5 M v a r 1162 MW -54 Mvar 811 MW 71 Mvar 74 MW 33 Mvar 452 MW -53 Mvar 501 MW -2 Mvar 465 MW -40 Mvar 414 MW 24 Mvar 388 MW 3 Mvar 381 MW 4 Mvar 422 MW -15 Mvar 431 MW -16 Mvar 653 MW -126 Mvar 4 7 0 M W 1 6 6 M v a r 1525 MW -135 Mvar 1 6 2 7 M W - 8 M v a r 1 6 0 3 M W 2 4 M v a r 1 0 3 2 M W - 8 1 M v a r 1033 MW -165 Mvar ID-NW = -1861 MW Grassland = 0 MW Summer Lake = -1050 MW Lolo = -382 MW Walla Walla = -238 MW LaGrande = -198 MW Midpoint West = -1385 MW Borah West = -132 MW Idaho-Sierra = 438 MW N of John Day = 7627 MW COI = 4972 MW PDCI = 3101 MW ID-MT = -382 MW W of McNary = 4051 MW W of Slatt = 5727 MW Alturas Project = 33 MW Path C = -1840 MW Montana Southeast = 677 MW TOT 2B1 = -49 MW TOT 2C = 83 MW 1066 MW -143 Mvar 34 MW 105 Mvar 904 MW 18 Mvar 1061 MW 21 Mvar 24 M W -85 M v a r 9 9 2 M W - 9 1 M v a r 0 M W 0 M v a r 0 MW 0 Mvar Page 689 of 776 Appendix L – 16hs2a_2250idnw_nvmod Case Post-Transient Contingency Results Figure L11: 16hs2a_2250idnw_nvmod Case BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.07 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 234.2 Mvar 1.09 puPONDROSA 0.0 Mvar 1 6 1 2 M W - 1 1 5 M v a r 1 5 0 9 M W - 1 4 7 M v a r 1 5 8 2 M W - 2 2 2 M v a r 1449 MW -163 Mvar 282 MW 59 Mvar 246 MW 56 Mvar 92 MW -30 Mvar 0.98 puHEMINWAY 1.09 pu JOHN DAY 448.8 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puLONGHORN 1.08 puSACJWA T 1.05 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.09 pu GRASSLND 176.6 Mvar 1.08 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.08 puHANFORD447.7 Mvar 1.08 puCDR SPRG 1.08 puBUCKLEY 0.99 puLAGRANDE 51.2 Mvar 1.04 puHAT ROCK 1.01 puWALAWALA 0.0 Mvar 0.99 puN POWDER 1.01 puTALBOT QUARTZTP 1.01 puWALA AVA 0.99 puHURICANE 1.00 puQUARTZ 1.01 puBROWNLEE 152.9 Mvar 114.7 Mvar 1.01 puDRYCREEK 0.0 Mvar 1.01 puHELLSCYN 1.01 puLOLO 1.03 puHATWAI 1.07 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.00 puOXBOW 1.05 puMIDPOINT 0.0 Mvar 1.07 puCEDARHIL-85.6 Mvar 1.06 puBORAH 1.00 puMIDPOINT 0.0 Mvar 175.8 Mvar 1.07 puPOPULUS 0.0 Mvar 1.01 puBORAH 0.0 Mvar 1.00 puADELAIDE 1.00 puIDAHO-NV 1.02 puKINPORT 180.5 Mvar 1.08 puANTICLIN 0.0 Mvar 1.01 puGOSHEN 0.0 Mvar 1.03 puANT PST 1.02 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 218.8 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 6 5 M W - 3 7 M v a r 1 7 0 9 M W - 9 5 M v a r 1718 MW -92 Mvar 1722 MW -94 Mvar 432 MW -23 Mvar 885 MW 23 Mvar 1409 MW -166 Mvar 933 MW -115 Mvar 870 MW -107 Mvar 25 MW -72 Mvar 812 MW -192 Mvar 0 MW 0 Mvar 988 MW 109 Mvar 3 6 7 M W - 2 4 M v a r 987 MW -25 Mvar 171 MW 2 Mvar 170 MW 29 Mvar 48 MW -36 Mvar 63 MW -34 Mvar 1450 MW 99 Mvar 1.04 puANTICLIN 576 MW 46 Mvar 576 MW 44 Mvar 415 MW 23 Mvar 355 MW 15 Mvar 489 MW -92 Mvar 171 MW 2 Mvar 66 MW 36 Mvar 380 MW 34 Mvar 768 MW -234 Mvar 37 MW 65 Mvar 197 MW 13 Mvar 226 MW 15 Mvar 467 MW 198 Mvar 606 MW 49 Mvar 297 MW -307 Mvar 1012 MW -110 Mvar 283 MW -14 Mvar 206 MW -36 Mvar 233 MW -47 Mvar 155 MW -26 Mvar 53 MW -0 Mvar 3 4 4 M W 6 2 M v a r 97 MW 40 Mvar 275 MW -45 Mvar 2 MW -60 Mvar 21 MW 35 Mvar 5 MW 32 Mvar 6 MW 36 Mvar 5 5 7 M W 2 3 M v a r HORSEFLT 0.98 puBOISEBCH 89.5 Mvar 0.0 Mvar 0.99 puONTARIO 53 MW -0 Mvar 55 MW 22 Mvar 405 MW 78 Mvar 3 9 3 M W - 6 1 M v a r 133 MW -44 Mvar 421 MW -76 Mvar 338 MW -11 Mvar 338 MW -11 Mvar 349 MW -17 Mvar 352 MW -45 Mvar 229 MW -64 Mvar 296 MW -79 Mvar 6 9 M W - 5 5 M v a r 6 9 M W - 5 4 M v a r 1019 MW -123 Mvar 885 MW 58 Mvar 44 MW 21 Mvar 436 MW -78 Mvar 507 MW -18 Mvar 471 MW -55 Mvar 420 MW 11 Mvar 394 MW -10 Mvar 387 MW -9 Mvar 431 MW -33 Mvar 440 MW -34 Mvar 671 MW -157 Mvar 4 8 1 M W 1 8 2 M v a r 1162 MW -102 Mvar 1 5 2 2 M W 3 0 M v a r 1 4 8 2 M W 5 5 M v a r 1 5 3 4 M W 9 6 M v a r 1537 MW -55 Mvar ID-NW = -1883 MW Grassland = -1125 MW Summer Lake = 92 MW Lolo = -393 MW Walla Walla = -252 MW LaGrande = -206 MW Midpoint West = -430 MW Borah West = 752 MW Idaho-Sierra = 367 MW N of John Day = 7636 MW COI = 5072 MW PDCI = 3101 MW ID-MT = -362 MW W of McNary = 4107 MW W of Slatt = 4779 MW Alturas Project = 49 MW Path C = -1795 MW Montana Southeast = 647 MW TOT 2B1 = -60 MW TOT 2C = 71 MW 92 MW 133 Mvar 0 MW 0 Mvar 967 MW -13 Mvar 1123 MW 0 Mvar 139 M W -106 M v a r 9 6 3 M W - 1 3 3 M v a r 1 1 2 5 M W - 4 6 M v a r 1090 MW -127 Mvar Page 690 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr No Violations BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 614.0 1156.6 979.0 118.1% 1287.7 89.8% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 297.6 748.0 722.9 103.5% 1265.2 59.1% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1711.7 2960.5 2442.0 121.2% 3235.5 91.5% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1711.7 2960.5 2199.9 134.6% 3235.5 91.5% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1710.6 2953.3 2666.9 110.7% 3999.9 73.8% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1701.8 2942.6 2667.0 110.3% 4000.0 73.6% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1665.2 2877.8 2699.7 106.6% 3999.9 71.9% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1657.8 2862.3 2699.7 106.0% 4000.0 71.6% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV No Violations BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1711.7 2995.4 2442.0 122.7% 3235.5 92.6% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1711.7 2995.4 2199.9 136.2% 3235.5 92.6% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1710.6 2987.8 2666.9 112.0% 3999.9 74.7% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1701.8 2977.5 2667.0 111.6% 4000.0 74.4% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.3 328.1 320.0 102.5% 370.0 88.7% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.5 1043.8 950.0 109.9% 1286.0 81.2% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.3 334.6 320.0 104.6% 370.0 90.4% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.5 1055.5 950.0 111.1% 1286.0 82.1% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 898.4 1024.6 1009.1 101.5% 1285.2 79.7% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations Page 691 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 811.6 800.0 101.4% 1199.9 67.6% BF 4708 Hatwai 500 kV Bus AMPS (65025) % Δ Volts 0.967 0.916 -5.27% BF 4708 Hatwai 500 kV Bus PTRSNFLT (62030) % Δ Volts 0.961 0.901 -6.24% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 782.0 972.5 920.0 105.7% 1046.8 92.9% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations Page 692 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr No Violations BF 5214 Low Mon-McNary & Calpine PH 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1358.1 1237.0 109.8% 1396.0 97.3% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 782.0 1014.6 920.0 110.3% 1046.8 96.9% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 824.1 800.0 103.0% 1199.9 68.7% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.967 0.907 -6.20% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.961 0.889 -7.49% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 782.0 1041.1 920.0 113.2% 1046.8 99.5% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1382.6 1237.0 111.8% 1396.0 99.0% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 806.0 800.0 100.7% 1199.9 67.2% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr AMPS (65025) % Δ Volts 0.967 0.909 -6.00% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr PTRSNFLT (62030) % Δ Volts 0.961 0.897 -6.66% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr No Violations BF Lolo 230kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1248.0 1237.0 100.9% 1396.0 89.4% BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 3 FRANKLIN (40443) % Δ Volts 1.005 0.943 -6.17% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1369.8 1237.0 110.7% 1396.0 98.1% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 782.0 1023.6 920.0 111.3% 1046.8 97.8% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 831.8 800.0 104.0% 1199.9 69.3% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV DILLON S (62084) % Δ Volts 0.980 0.929 -5.20% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts 0.967 0.901 -6.83% BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.961 0.883 -8.12% BF PGE Grassland-Coyote 500 kV & Carty Gas Project No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen No Violations Bus: Alvey 500 kV + RAS No Violations Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS No Violations Bus: Rock Creek 500 kV No Violations Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Allston-Keeler 500 kV + RAS No Violations N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 898.4 1069.8 1009.1 106.0% 1285.2 83.2% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations Page 693 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Ashe-Slatt 500 kV No Violations N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1711.7 2603.3 2442.0 106.6% 3235.5 80.5% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1711.7 2603.3 2199.9 118.3% 3235.5 80.5% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1767.5 2402.3 2199.9 109.2% 3280.5 73.2% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1752.6 2382.0 2199.9 108.3% 3280.5 72.6% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1944.2 2606.5 2477.9 105.2% 3999.9 65.2% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 898.4 1014.1 1009.1 100.5% 1285.2 78.9% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 614.0 1117.8 979.0 114.2% 1287.7 86.8% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 815.3 800.0 101.9% 1199.9 67.9% N-1: Dworshak-Hatwai 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.961 0.911 -5.20% N-1: Dworshak-Hatwai 500 kV + RAS+PTSN MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 817.6 800.0 102.2% 1199.9 68.1% N-1: Dworshak-Taft 500 kV No Violations N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations Page 694 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 782.0 972.1 920.0 105.7% 1046.8 92.9% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 782.0 985.4 920.0 107.1% 1046.8 94.1% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1350.5 1237.0 109.2% 1396.0 96.7% N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 782.0 1008.2 920.0 109.6% 1046.8 96.3% N-1: Hemingway-Grassland 500 kV MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 824.3 800.0 103.0% 1199.9 68.7% N-1: Hemingway-Grassland 500 kV AMPS (65025) % Δ Volts 0.967 0.908 -6.10% N-1: Hemingway-Grassland 500 kV PTRSNFLT (62030) % Δ Volts 0.961 0.891 -7.28% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1717.4 2896.0 2400.0 120.7% 3199.9 90.5% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1724.3 2915.8 2400.0 121.5% 3800.0 76.7% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1345.4 1237.0 108.8% 1396.0 96.4% N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 782.0 1003.8 920.0 109.1% 1046.8 95.9% N-1: Hemingway-Grassland 500 kV + PTSN Shunt MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 825.5 800.0 103.2% 1199.9 68.8% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV No Violations N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1711.7 2963.1 2442.0 121.3% 3235.5 91.6% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1711.7 2963.1 2199.9 134.7% 3235.5 91.6% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1710.6 2955.7 2666.9 110.8% 3999.9 73.9% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1701.8 2945.5 2667.0 110.4% 4000.0 73.6% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1665.2 2935.2 2699.7 108.7% 3999.9 73.4% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1657.8 2922.3 2699.7 108.2% 4000.0 73.1% Page 695 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV No Violations N-1: Midpoint-Hemingway 500 kV No Violations N-1: Midpoint-Hemingway 500 kV + PTSN Shunt No Violations N-1: Midpoint-Humboldt 345 kV No Violations N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1108.1 1252.2 1237.0 101.2% 1396.0 89.7% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.3 350.9 320.0 109.7% 370.0 94.8% N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.5 1183.3 950.0 124.6% 1286.0 92.0% N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.3 326.6 320.0 102.1% 370.0 88.3% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.5 1038.6 950.0 109.3% 1286.0 80.8% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1767.5 3178.1 2199.9 144.5% 3280.5 96.9% N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUND MT Branch Amp 1767.5 3178.1 2667.0 119.2% 4000.0 79.5% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 1757.6 3164.4 2667.0 118.6% 4000.0 79.1% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations Page 696 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1944.2 2891.7 2477.9 116.7% 3999.9 72.3% N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABLE MT Branch Amp 1944.2 2891.7 2667.0 108.4% 4000.0 72.3% N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at TABVAC12 Branch Amp 1918.3 2871.4 2667.0 107.7% 4000.0 71.8% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1454.0 2597.8 2230.0 116.5% 3555.9 73.1% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS MLCK PHA (62355) -> PTRSNFLT (62030) CKT 1 at PTRSNFLT Branch Amp 715.7 812.8 800.0 101.6% 1199.9 67.7% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS AMPS (65025) % Δ Volts 0.967 0.916 -5.27% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS PTRSNFLT (62030) % Δ Volts 0.961 0.900 -6.35% N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 898.4 1033.4 1009.1 102.4% 1285.2 80.4% N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV BETHEL5 (43041) % Δ Volts 1.054 0.996 -5.50% N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 898.4 1099.2 1009.1 108.9% 1285.2 85.5% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV BRIDGER (60085) -> BRI3MI11 (61999) CKT 1 at BRIDGER Branch Amp 1189.6 1729.0 1600.0 108.1% 1919.0 90.1% N-2: Bridger-Populus #1 & #2 345 kV SODA (66385) -> GRACE (65695) CKT 1 at SODA Branch Amp 393.0 540.1 539.7 100.1% 644.3 83.8% N-2: Bridger-Populus #1 & #2 345 kV BRI3MI11 (61999) -> 3MIKNOLL (60084) CKT 1 at BRI3MI11 Branch Amp 1162.5 1684.5 1650.1 102.1% 2227.4 75.6% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> BRIDGER (65220) CKT 2 at BRIDGER Branch MVA 114.7 208.6 200.0 104.3% 220.0 94.8% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> BRIDGER (65220) CKT 1 at BRIDGER Branch MVA 112.8 205.3 200.0 102.6% 220.0 93.3% N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV BRIDGER (60085) -> BRIDGER (65220) CKT 3 at BRIDGER Branch MVA 112.8 205.3 200.0 102.6% 220.0 93.3% N-2: Broadview-Garrisont #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 782.0 957.1 920.0 104.0% 1046.8 91.4% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1717.4 2792.7 2400.0 116.4% 3199.9 87.3% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1724.3 2807.4 2400.0 117.0% 3800.0 73.9% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1711.7 2380.0 2199.9 108.2% 3235.5 73.6% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1767.5 2377.6 2199.9 108.1% 3280.5 72.5% Page 697 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1752.6 2357.5 2199.9 107.2% 3280.5 71.9% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1944.2 2546.6 2477.9 102.8% 3999.9 63.7% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at VINCENT Branch Amp 1499.6 2192.3 2134.0 102.7% 3499.9 62.6% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1481.2 2162.4 2134.0 101.3% 3499.9 61.8% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1717.4 2587.2 2400.0 107.8% 3199.9 80.9% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1724.3 2606.3 2400.0 108.6% 3800.0 68.6% N-2: Double Palo Verde AMPS (65025) % Δ Volts 0.967 0.913 -5.58% N-2: Double Palo Verde PTRSNFLT (62030) % Δ Volts 0.961 0.900 -6.35% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS No Violations N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV No Violations N-2: Grassland-Coyote & Slatt - Longhorn 500 kV No Violations N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1724.3 3310.0 2400.0 137.9% 3800.0 87.1% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM12 Branch Amp 1391.0 3176.7 2700.0 117.7% 4000.0 79.4% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1609.0 3130.5 2400.0 130.4% 3800.0 82.4% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1594.2 3116.7 2400.0 129.9% 3800.0 82.0% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1609.0 3140.0 2400.0 130.8% 3800.0 82.6% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1594.2 3129.4 2400.0 130.4% 3800.0 82.4% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1819.8 3113.6 2900.0 107.4% 4350.0 71.6% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 1857.1 3483.3 3000.0 116.1% 4050.0 86.0% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at HORIZN Branch MVA 270.3 347.5 320.0 108.6% 370.0 93.9% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.5 1183.6 950.0 124.6% 1286.0 92.0% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 79.4 96.5 94.0 102.7% 139.0 69.4% N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 782.0 1023.4 920.0 111.2% 1046.8 97.8% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1841.9 3902.0 2667.4 146.3% 4099.2 95.2% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1808.1 3788.4 2667.4 142.0% 4099.2 92.4% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1808.1 3788.4 2667.4 142.0% 4099.2 92.4% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1923.8 3238.0 2993.0 108.2% 4514.9 71.7% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1923.8 3238.0 2993.0 108.2% 4514.9 71.7% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1893.1 3203.3 2993.0 107.0% 4514.9 71.0% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1893.1 3203.3 2993.0 107.0% 4514.9 71.0% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1871.9 3164.8 2993.0 105.7% 4514.9 70.1% N-2: Malin-Round Mtn #1 & #2 500 kV WDJCT L1 (45522) % Δ Volts 1.006 0.950 -5.57% N-2: Malin-Round Mtn #1 & #2 500 kV WEED JCT (45525) % Δ Volts 1.006 0.950 -5.57% N-2: Malin-Round Mtn #1 & #2 500 kV WEED (45524) % Δ Volts 1.002 0.945 -5.69% N-2: Malin-Round Mtn #1 & #2 500 kV MTSHASTA (44970) % Δ Volts 0.988 0.930 -5.87% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) % Δ Volts 1.042 0.979 -6.05% Page 698 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV HORSE HV (40547) % Δ Volts 1.032 0.980 -5.04% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV PTRSNFLT (62030) % Δ Volts 0.961 0.911 -5.20% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS No Violations N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.3 328.6 320.0 102.7% 370.0 88.8% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 647.5 1044.2 950.0 109.9% 1286.0 81.2% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 670.2 859.3 830.9 103.4% 926.3 92.8% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1841.9 3595.3 2667.4 134.8% 4099.2 87.7% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1808.1 3497.0 2667.4 131.1% 4099.2 85.3% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPOLI11 Branch Amp 1808.1 3485.9 2667.4 130.7% 4099.2 85.0% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 1923.8 3434.9 2993.0 114.8% 4514.9 76.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 1923.8 3434.9 2993.0 114.8% 4514.9 76.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 1893.1 3414.4 2993.0 114.1% 4514.9 75.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at OLIMAX12 Branch Amp 1893.1 3414.4 2993.0 114.1% 4514.9 75.6% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 1871.9 3381.5 2993.0 113.0% 4514.9 74.9% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHE (30790) -> MCMULLN1 (30825) CKT 1 at MCMULLN1 Branch Amp 286.9 922.5 825.9 111.7% 976.5 94.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MCMULLN1 (30825) -> KEARNEY (30830) CKT 1 at MCMULLN1 Branch Amp 233.8 864.0 825.1 104.7% 975.0 88.6% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PANOCHEJ (34159) -> HAMMONDS (34160) CKT 1 at HAMMONDS Branch Amp 392.7 470.2 462.9 101.6% 579.9 81.1% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1944.2 2485.0 2477.9 100.3% 3999.9 62.1% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 699 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-CT2M_ 18.0 (45451) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALLCT2_ 18.0 (45449) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFC-STMD_ 18.0 (45452) BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST OPEN Bus KFALL ST_ 18.0 (45447) BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr OPEN Transformer MERIDINP_230.0 (45195) TO MERIDINP_500.0 (45197) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 4003 Hanford-Vantage & Hanford Caps OPEN Shunt HANFORD_500.0 (40499) #s BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Bus MALIN R3_500.0 (40688) BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4028 Taft-Dworshak & Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt MALIN_500.0 (40687) #c1 BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV CLOSE Shunt CAPTJACK_500.0 (45035) #c1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV OPEN Shunt GARRISON_500.0 (40459) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt TAFT_500.0 (41057) #s BF 4114 Garrison-Taft #1 +Taft Reactor 500kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Bus HOT SPR_500.0 (40553) BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r BF 4170 John Day-Marion & John Day Caps 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 BF 4170 John Day-Marion & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 Page 700 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP S1_ 18.0 (47641) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G2_ 18.0 (47640) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Bus HPP G1_ 18.0 (47639) BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 2 BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr OPEN Transformer CUSTER W_500.0 (40323) TO CUSTER W_230.0 (40321) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 BF 4293 Schultz-Raver & Raver Covington5 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr OPEN Transformer SICKLER_500.0 (40973) TO DOUGLAS_230.0 (47031) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN Bus ASHE R1_500.0 (40062) BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 BF 4386 Buckley-Marion & Marion-Santiam 500 kV OPEN Bus SANTIAM_500.0 (40941) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Shunt OSTRNDER_500.0 (40809) #s BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV CLOSE MultiSectionLine PEARL_500.0 (40827) TO KNIGHT_500.0 (41450) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV OPEN Bus OSTRNDER_230.0 (40810) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN Bus TROUTDAL_500.0 (41095) BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Shunt PEARL_500.0 (40827) #s BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps OPEN Transformer PEARL_500.0 (40827) TO PEARL E_230.0 (40824) CKT 1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 Page 701 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOK TAP_500.0 (41001) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Bus SNOKING_500.0 (41007) BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt JOHN DAY_500.0 (40585) #s BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS OPEN Shunt MONROE_500.0 (40749) #s BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Bus SATSOP_500.0 (40949) BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Bus SATSOP_500.0 (40949) BF 4540 Paul-Napavine & Paul-Satsop 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR G2_ 20.0 (47744) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2AX_ 4.2 (47746) BF 4542 Paul-Allston 500 kV & Center G2 OPEN Bus CENTR2FG_ 13.8 (47747) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR G1_ 20.0 (47740) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1AX_ 4.2 (47742) BF 4542 Paul-Napavine 500 kV & Center G1 OPEN Bus CENTR1FG_ 13.8 (47743) BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4550 Olympia-Paul & Paul-Allston 500 kV OPEN Shunt OLY E_230.0 (40794) #s BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Transformer TONO_115.0 (42806) TO PAUL_500.0 (40821) CKT 1 BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr OPEN Shunt OLY E_230.0 (40794) #s BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps OPEN Shunt MONROE_500.0 (40749) #s BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV OPEN Shunt LOW MON_500.0 (40683) #s BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr OPEN Transformer ALLSTON_500.0 (40045) TO ALLSTN E_230.0 (40043) CKT 2 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_500.0 (40521) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Bus HATWAI_230.0 (40519) BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Lancaster Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN InjectionGroup RAS Dworshak Gen Drop BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line NPULLMAN_115.0 (48291) TO SHAWNEE_115.0 (48383) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCITYT_115.0 (48245) TO SPULLMAN_115.0 (48413) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS HOT SPR_500.0 (40553) TO -148.3 MVR BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4700 Hatwai 500kV & 230 kV + RAS CLOSE Line LEON_115.0 (48183) TO MOSCCITY_115.0 (48243) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS OPEN Line MOSCCITY_115.0 (48243) TO MOSCITYT_115.0 (48245) CKT 1 BF 4700 Hatwai 500kV & 230 kV + RAS SET SWITCHED SHUNT AT BUS N LEWIST_115.0 (48253) TO 44.4 MVR BF 4708 Hatwai 500 kV Bus OPEN Bus HATWAI_500.0 (40521) BF 4708 Hatwai 500 kV Bus OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 BF 4708 Hatwai 500 kV Bus SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 134.2 MVR BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr OPEN Transformer CHIEF JO_500.0 (40233) TO CHIEF J2_230.0 (40232) CKT 3 Page 702 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Lower Granite Gen Drop BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV OPEN Transformer BIG EDDY_500.0 (40111) TO BIGEDDY1_230.0 (41341) CKT 2 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4888 Ashe-Slatt & CGS 500 kV OPEN Bus CGS_ 25.0 (40063) BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN Bus BURNS_500.0 (45029) BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R1_500.0 (40684) BF 4996 CaptJack-Malin #1 & #2 500 kV OPEN Bus MALIN R3_500.0 (40688) BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 BF 5018 Ashe-Slatt & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN Bus ROUND BU_500.0 (43485) BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Bus MAPLE VL_500.0 (40693) BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 BF 5179 Vantage-Schultz & Schultz-Raver #4 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV OPEN Bus COYOTETP_500.0 (40725) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M1_500.0 (43115) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G1_ 18.0 (43111) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S1_ 13.8 (43119) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYOTE_500.0 (43123) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO M2_ 1.0 (48519) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO G2_ 18.0 (48516) BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV OPEN Bus COYO S2_ 13.8 (48518) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJWA T_500.0 (40917) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Bus SACJAWEA_500.0 (40913) BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJWA T_500.0 (40917) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus SACJAWEA_500.0 (40913) Page 703 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Bus HERMCALP_500.0 (47638) BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G1_ 18.0 (47639) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP G2_ 18.0 (47640) CKT 1 BF 5214 Low Mon-McNary & Calpine PH 500 kV OPEN Transformer HERMCALP_500.0 (47638) TO HPP S1_ 18.0 (47641) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 BF 5266 Slatt-Buckly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Bus BURNS_500.0 (45029) BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Bus CEDARHIL_500.0 (60159) BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr OPEN Transformer HEMINWAY_500.0 (60155) TO HEMINWAY_230.0 (60156) CKT 1 BF Lolo 230kV OPEN Bus LOLO_230.0 (48197) BF McNary 230 kV SECT 1 OPEN Bus HERM 1G_ 18.0 (45454) BF McNary 230 kV SECT 1 OPEN Bus HERM 1S_ 13.8 (45455) BF McNary 230 kV SECT 1 OPEN Bus HERM 2G_ 18.0 (45456) BF McNary 230 kV SECT 1 OPEN Bus HERM 2S_ 13.8 (45457) BF McNary 230 kV SECT 1 OPEN Bus MCN 01_ 13.8 (44101) BF McNary 230 kV SECT 1 OPEN Bus MCN 02_ 13.8 (44102) BF McNary 230 kV SECT 1 OPEN Bus MCN 03_ 13.8 (44103) BF McNary 230 kV SECT 1 OPEN Bus MCN 04_ 13.8 (44104) BF McNary 230 kV SECT 1 OPEN Bus BOARD T1_230.0 (40121) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_230.0 (40129) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_115.0 (40127) BF McNary 230 kV SECT 1 OPEN Bus MORROW 1_115.0 (47334) BF McNary 230 kV SECT 1 OPEN Bus PORT MOR_115.0 (47335) BF McNary 230 kV SECT 1 OPEN Bus MORRO G1_ 13.8 (47658) BF McNary 230 kV SECT 1 OPEN Bus KINGEN T_ 69.0 (40608) BF McNary 230 kV SECT 1 OPEN Bus KINGEN_ 69.0 (47332) BF McNary 230 kV SECT 1 OPEN Bus KINZ WW_ 12.5 (47331) BF McNary 230 kV SECT 1 OPEN Bus BOARDMAN_ 69.0 (40125) BF McNary 230 kV SECT 1 OPEN Bus IONE_ 69.0 (40575) BF McNary 230 kV SECT 1 OPEN Bus TOWER RD_115.0 (41324) BF McNary 230 kV SECT 1 OPEN Bus ALKALI C_115.0 (41319) BF McNary 230 kV SECT 1 OPEN Bus HERMISTN_230.0 (45137) BF McNary 230 kV SECT 1 OPEN Bus MCN PH1_230.0 (44122) BF McNary 230 kV SECT 1 OPEN Bus MCN PH2_230.0 (44123) BF McNary 230 kV SECT 1 OPEN Bus MCN TX1_100.0 (44115) BF McNary 230 kV SECT 1 OPEN Bus MCN TX2_100.0 (44116) BF McNary 230 kV SECT 2 OPEN Bus MCNRY S2_230.0 (41352) BF McNary 230 kV SECT 2 OPEN Bus MCN PH34_230.0 (44125) BF McNary 230 kV SECT 2 OPEN Bus MCN PH3_230.0 (44124) BF McNary 230 kV SECT 2 OPEN Bus MCN PH4_230.0 (44126) BF McNary 230 kV SECT 2 OPEN Bus MCN TX3_100.0 (44117) BF McNary 230 kV SECT 2 OPEN Bus MCN 05_ 13.8 (44105) BF McNary 230 kV SECT 2 OPEN Bus MCN 06_ 13.8 (44106) BF McNary 230 kV SECT 2 OPEN Bus MCN TX4_100.0 (44118) BF McNary 230 kV SECT 2 OPEN Bus MCN 07_ 13.8 (44107) BF McNary 230 kV SECT 2 OPEN Bus MCN 08_ 13.8 (44108) BF McNary 230 kV SECT 2 SET SWITCHED SHUNT AT BUS JONESCYN_230.0 (47814) TO 52.2 MVR BF McNary 230 kV SECT 3 OPEN Bus MCNRY S3_230.0 (41353) BF McNary 230 kV SECT 3 OPEN Bus MCN PH5_230.0 (44127) BF McNary 230 kV SECT 3 OPEN Bus MCN TX5_100.0 (44119) Page 704 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency BF McNary 230 kV SECT 3 OPEN Bus MCN TX6_100.0 (44120) BF McNary 230 kV SECT 3 OPEN Bus MCN 09_ 13.8 (44109) BF McNary 230 kV SECT 3 OPEN Bus MCN 10_ 13.8 (44110) BF McNary 230 kV SECT 3 OPEN Bus MCN 11_ 13.8 (44111) BF McNary 230 kV SECT 3 OPEN Bus MCN 12_ 13.8 (44112) BF McNary 230 kV SECT 3 OPEN Bus MCNARY_345.0 (40721) BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Cedar Spring & Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD CT_ 18.5 (43044) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD ST_ 16.0 (43045) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Transformer BOARD CT_ 18.5 (43044) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Gen BOARD ST_ 16.0 (43045) #1 BF PGE Grassland-Coyote 500 kV & Carty Gas Project OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Transformer BOARD F_ 24.0 (43047) TO GRASSLND_500.0 (43049) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen OPEN Gen BOARD F_ 24.0 (43047) #1 Bus: Alvey 500 kV + RAS OPEN Bus ALVEY_500.0 (40051) Bus: Alvey 500 kV + RAS CHANGE INJECTION GROUP RAS Low Gen Drop Units BY 'Low_gen_drop_value_less300' MW in generator merit order by opening Bus: Bell BPA 500 kV OPEN Bus BELL BPA_500.0 (40091) Bus: Bell BPA 500 kV OPEN Bus COULE R1_500.0 (40288) Bus: Bell BPA 500 kV OPEN Bus BELL SC_500.0 (40096) Bus: Buckley 500 kV OPEN Bus BUCKLEY_500.0 (40155) Bus: Dixonville 500 kV OPEN Bus DIXONVLE_500.0 (45095) Bus: Dixonville 500 kV SET SWITCHED SHUNT AT BUS GRANT PS_230.0 (45123) TO 147.4 MVR Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #2 Bus: Dixonville 500 kV CLOSE Shunt ROGUE_115.0 (40893) #3 Bus: Hot Springs 500 kV OPEN Bus HOT SPR_500.0 (40553) Bus: Keeler 500 kV + RAS OPEN Bus KEELER_500.0 (40601) Bus: Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW Bus: Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening Bus: Rock Creek 500 kV OPEN Bus ROCK CK_500.0 (41401) Bus: Rock Creek 500 kV OPEN Bus ROCK CK_230.0 (41402) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_230.0 (47386) Bus: Rock Creek 500 kV OPEN Bus ENRGZR T_230.0 (47823) Bus: Rock Creek 500 kV OPEN Bus WHITE CK_230.0 (47827) Bus: Rock Creek 500 kV OPEN Bus IMRIE_230.0 (47822) Bus: Rock Creek 500 kV OPEN Bus JNPRC 1_ 34.5 (47387) Bus: Rock Creek 500 kV OPEN Bus JNPRC C1_ 34.5 (47388) Bus: Rock Creek 500 kV OPEN Bus JNPRC W1_ 0.7 (47389) Bus: Rock Creek 500 kV OPEN Bus DOOLEY T_230.0 (47465) Bus: Rock Creek 500 kV OPEN Bus WNDYF 3_ 34.5 (47496) Bus: Rock Creek 500 kV OPEN Bus WNDYF 2_ 34.5 (47493) Bus: Rock Creek 500 kV OPEN Bus WNDYF C2_ 34.5 (47494) Bus: Rock Creek 500 kV OPEN Bus WNDYF W2_ 0.7 (47495) Bus: Rock Creek 500 kV OPEN Bus WNDYF C3_ 34.5 (47497) Bus: Rock Creek 500 kV OPEN Bus WNDYF W3_ 0.7 (47498) Bus: Rock Creek 500 kV OPEN Bus GDNOE 1_ 34.5 (47829) Bus: Rock Creek 500 kV OPEN Bus WNDYF 1_ 34.5 (47825) Bus: Rock Creek 500 kV OPEN Bus WILLIS T_230.0 (47824) Bus: Rock Creek 500 kV OPEN Bus TULMN 1_ 34.5 (47826) Bus: Rock Creek 500 kV OPEN Bus WNDYF C1_ 34.5 (47936) Bus: Rock Creek 500 kV OPEN Bus TULMN C1_ 34.5 (47938) Bus: Rock Creek 500 kV OPEN Bus WHTCK 2_ 34.5 (47903) Bus: Rock Creek 500 kV OPEN Bus WHTCK 1_ 34.5 (47902) Bus: Rock Creek 500 kV OPEN Bus MILLRA S_230.0 (47857) Bus: Rock Creek 500 kV OPEN Bus GDNOE C1_ 34.5 (47865) Bus: Rock Creek 500 kV OPEN Bus MILLR 1_ 34.5 (47966) Bus: Rock Creek 500 kV OPEN Bus HARVST W_230.0 (47858) Bus: Rock Creek 500 kV OPEN Bus HRVST 1_ 34.5 (47979) Bus: Rock Creek 500 kV OPEN Bus GDNOE W1_ 0.6 (47866) Bus: Rock Creek 500 kV OPEN Bus WHTCK C1_ 34.5 (47904) Page 705 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency Bus: Rock Creek 500 kV OPEN Bus WHTCK C2_ 34.5 (47905) Bus: Rock Creek 500 kV OPEN Bus WHTCK W1_ 0.7 (47906) Bus: Rock Creek 500 kV OPEN Bus WHTCK W2_ 0.7 (47907) Bus: Rock Creek 500 kV OPEN Bus WNDYF W1_ 0.7 (47937) Bus: Rock Creek 500 kV OPEN Bus TULMN W2_ 0.6 (47940) Bus: Rock Creek 500 kV OPEN Bus TULMN W1_ 0.7 (47939) Bus: Rock Creek 500 kV OPEN Bus MILLR C1_ 34.5 (47967) Bus: Rock Creek 500 kV OPEN Bus MILLR W1_ 0.6 (47968) Bus: Rock Creek 500 kV OPEN Bus HRVST C1_ 34.5 (47980) Bus: Rock Creek 500 kV OPEN Bus HRVST W1_ 0.7 (47981) Bus: Sickler 500 kV OPEN Bus SICKLER_500.0 (40973) Bus: Summer Lake 500 kV OPEN Bus PONDROSA_500.0 (40837) Bus: Summer Lake 500 kV OPEN Bus SUMMER L_500.0 (41043) Bus: Summer Lake 500 kV OPEN Bus BURNS_500.0 (45029) Bus: Summer Lake 500 kV OPEN Bus GRIZZ R3_500.0 (40488) N-1: Allston-Keeler 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO KEELER_500.0 (40601) CKT 1 N-1: Allston-Keeler 500 kV + RAS SET GENERATION AT BUS YALE GEN_ 13.2 (45351) TO 70 MW N-1: Allston-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'South_of_Allston_gen_drop_value_less300' MW in generator merit order by opening N-1: Allston-Napavine 500 kV OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-1: Allston-Paul #2 500 kV OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-1: Alvery-Dixonville 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO DIXONVLE_500.0 (45095) CKT 1 N-1: Alvey-Marion 500 kV OPEN MultiSectionLine ALVEY_500.0 (40051) TO MARION_500.0 (40699) CKT 1 N-1: Ashe-Hanford 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-1: Ashe-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO LOW MON_500.0 (40683) CKT 1 N-1: Ashe-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-1: Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-1: Bell-Coulee 500 kV OPEN Bus COULE R1_500.0 (40288) N-1: Bell-Taft 500 kV OPEN Bus BELL SC_500.0 (40096) N-1: Big Eddy-Celilo 500 kV OPEN Line BIG EDDY_500.0 (40111) TO CELILO1_500.0 (41311) CKT 1 N-1: Big Eddy-John Day 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-1: Big Eddy-Knight 500 kV OPEN Line BIG EDDY_500.0 (40111) TO KNIGHT_500.0 (41450) CKT 1 N-1: Big Eddy-Ostrander 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-1: Boise Bench-Brownlee #3 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-1: Brady-Antelope 230 kV OPEN Line BRADY_230.0 (60073) TO ANTLOPE_230.0 (65075) CKT 1 N-1: Broadview-Garrison #1 500 kV OPEN Bus GAR1EAST_500.0 (40451) N-1: Broadview-Garrison #1 500 kV OPEN Bus TOWN1_500.0 (62013) N-1: Brownlee-Ontario 230 kV OPEN MultiSectionLine BROWNLEE_230.0 (60095) TO ONTARIO_230.0 (60265) CKT 1 N-1: Buckley-Grizzly 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-1: Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-1: Buckley-Slatt 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-1: Captain Jack-Olinda 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO OLINDA_500.0 (30020) CKT 1 N-1: CaptJack-Kfalls 500 kV OPEN Line CAPTJACK_500.0 (45035) TO KFALLS_500.0 (45262) CKT 1 N-1: Cascade Crossing 500 kV OPEN Bus CDR SPRG_500.0 (43950) N-1: Cascade Crossing 500 kV OPEN Bus CDRSBET1_500.0 (43951) N-1: Cascade Crossing 500 kV OPEN Bus BETHCRS1_500.0 (43491) N-1: Cascade Crossing 500 kV OPEN Bus BETHEL5_500.0 (43041) N-1: Chief Jo-Coulee 500 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-1: Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-1: Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-1: Coulee-Hanford 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-1: Coulee-Schultz 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Covington4-Raver 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-1: Covington5-Raver 500 kV OPEN Line COVINGT5_500.0 (40306) TO RAVER_500.0 (40869) CKT 2 N-1: Coyote-Longhorn 500 kV OPEN Line COYOTE_500.0 (43123) TO LONGHORN_500.0 (40724) CKT 1 N-1: CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-1: Dixonville-Meridian 500 kV OPEN MultiSectionLine DIXONVLE_500.0 (45095) TO MERIDINP_500.0 (45197) CKT 1 N-1: Drycreek-Lolo 230 kV OPEN Line DRYCREEK_230.0 (48512) TO LOLO_230.0 (48197) CKT 1 N-1: Drycreek-N Lewiston 230 kV OPEN Line DRYCREEK_230.0 (48512) TO N LEWIST_230.0 (48255) CKT 1 N-1: Drycreek-Wala Ava 230 kV OPEN Line DRYCREEK_230.0 (48512) TO WALA AVA_230.0 (48451) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #s Page 706 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Line DWORSHAK_500.0 (40369) TO HATWAI_500.0 (40521) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Dworshak-Hatwai 500 kV + RAS+PTSN OPEN Shunt GARRISON_500.0 (40459) #s N-1: Dworshak-Hatwai 500 kV + RAS+PTSN SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Dworshak-Taft 500 kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-1: Echo Lake-Maple Valley 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO MAPLE VL_500.0 (40693) CKT 1 N-1: Echo Lake-Raver 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-1: Echo Lake-Schultz 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-1: Echo Lake-Snok Tap 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO SNOK TAP_500.0 (41001) CKT 1 N-1: Garrison-Taft #2 500 kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-1: Garrison-Taft #2 500 kV OPEN Shunt GARRISON_500.0 (40459) #r N-1: Goldhill-Placer 115 kV OPEN Bus HORSHE1_115.0 (32229) N-1: Goldhill-Placer 115 kV OPEN Bus HORSESHE_115.0 (32230) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTL1_115.0 (32233) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_115.0 (32234) N-1: Goldhill-Placer 115 kV OPEN Bus NEWCSTLE_ 13.2 (32460) N-1: Goldhill-Placer 115 kV OPEN Bus FLINT1_115.0 (32236) N-1: Grassland-Coyote 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-1: Grassland-Slatt 500 kV OPEN Line GRASSLND_500.0 (43049) TO SLATT_500.0 (40989) CKT 1 N-1: Grizzly-John Day #2 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-1: Grizzly-Malin 500 kV OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN MultiSectionLine PONDROSA_500.0 (40837) TO SUMMER L_500.0 (41043) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZ R3_500.0 (40488) TO PONDROSA_500.0 (40837) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Line GRIZZLY_500.0 (40489) TO GRIZZ R3_500.0 (40488) CKT 1 N-1: Grizzly-Ponderosa A-Summer L 500 kV OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Line GRIZZLY_500.0 (40489) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN MultiSectionLine CAPTJACK_500.0 (45035) TO PONDROSB_500.0 (40834) CKT 1 N-1: Grizzly-Ponderosa B-Capt Jack 500 kV OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Grizzly-Round Bu 500 kV OPEN Line GRIZZLY_500.0 (40489) TO ROUND BU_500.0 (43485) CKT 1 N-1: Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-1: Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-1: Hanford-Wautoma 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Transformer HATWAI_500.0 (40521) TO HATWAI_230.0 (40519) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS OPEN Line DWOR 1_ 13.8 (40361) TO DWOR 2_ 13.8 (40363) CKT 1 N-1: Hatwai 500/230 kV Xfmr + RAS SET SWITCHED SHUNT AT BUS DRYCREEK_230.0 (48512) TO 67.1 MVR N-1: Hatwai-Lolo 230 kV OPEN Line HATWAI_230.0 (40519) TO LOLO_230.0 (48197) CKT 1 N-1: Hatwai-Low Gran 500 kV OPEN Line HATWAI_500.0 (40521) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Hatwai-N Lewiston 230 kV OPEN Line HATWAI_230.0 (40519) TO N LEWIST_230.0 (48255) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-1: Hells Canyon-Brownlee 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-1: Hells Canyon-Walla Walla 230 kV OPEN Line HELLSCYN_230.0 (60150) TO HURICANE_230.0 (45103) CKT 1 N-1: Hells Canyon-Walla Walla 230 kV OPEN MultiSectionLine HURICANE_230.0 (45103) TO WALAWALA_230.0 (45327) CKT 1 N-1: Hemingway-Grassland 500 kV OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 31.7 MVR N-1: Hemingway-Grassland 500 kV SET SWITCHED SHUNT AT BUS DILLON S_161.0 (62084) TO 27.9 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 200 MVR N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt CAPTJACK_500.0 (45035) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-1: Hemingway-Grassland 500 kV + FACRI OPEN Shunt MALIN_500.0 (40687) #s N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt MALIN_500.0 (40687) #c2 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt OLINDA_500.0 (30020) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-1: Hemingway-Grassland 500 kV + FACRI CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-1: Hemingway-Grassland 500 kV + FACRI INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt OPEN MultiSectionLine HEMINWAY_500.0 (60155) TO GRASSLND_500.0 (43049) CKT 1 N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR Page 707 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS HEMINWAY_500.0 (60155) TO 400 MVR N-1: Hemingway-Grassland 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Hemingway-Summer Lake 500 kV OPEN Line HEMINWAY_500.0 (60155) TO BURNS_500.0 (45029) CKT 1 N-1: Hemingway-Summer Lake 500 kV OPEN MultiSectionLine BURNS_500.0 (45029) TO SUMMER L_500.0 (41043) CKT 1 N-1: Hill Top 345/230 Xfmr OPEN Transformer HIL TOP_230.0 (40537) TO HIL TOP_345.0 (64058) CKT 1 N-1: Horse Hv-McNary 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-1: Hot Springs-Taft 500 kV OPEN Line HOT SPR_500.0 (40553) TO TAFT_500.0 (41057) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line COYOTECR_345.0 (64032) TO HUMBOLDT_345.0 (64059) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Line MAGGIECR_120.0 (64070) TO CARLIN_120.0 (64169) CKT 1 N-1: Humboldt-Coyote Ck 345 kV OPEN Shunt EIGHTMFK_120.0 (64457) #b N-1: Humboldt-Coyote Ck 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Humboldt-Coyote Ck 345 kV CLOSE Shunt HUMBOLT1_ 24.9 (64216) #b N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO &1_345.0 (67582) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO_345.0 (66225) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #2_ 99.0 (65014) N-1: Huntington-Pinto-Four Corners 345 kV OPEN Bus PINTO #3_ 99.0 (65017) N-1: Ing500-CusterW 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-1: John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-1: John Day-Rock Ck 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-1: John Day-Slatt 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-1: Kfalls-Meridian 500 kV OPEN Line KFALLS_500.0 (45262) TO MERIDINP_500.0 (45197) CKT 1 N-1: Knight-Wautoma 500 kV OPEN MultiSectionLine KNIGHT_500.0 (41450) TO WAUTOMA_500.0 (41138) CKT 1 N-1: LaGrande-North Powder 230 kV OPEN Line LAGRANDE_230.0 (40621) TO N POWDER_230.0 (60312) CKT 1 N-1: Lanes-Marion 500 kV OPEN Line LANE_500.0 (40629) TO MARION_500.0 (40699) CKT 1 N-1: Lit Goose-Central Ferry 500 kV OPEN Line LIT GOOS_500.0 (40665) TO CEN FERY_500.0 (40666) CKT 1 N-1: Lit Goose-Low Mon 500 kV OPEN Line LIT GOOS_500.0 (40665) TO LOW MON_500.0 (40683) CKT 1 N-1: Low Gran-Central Ferry 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-1: Low Mon-Sac Tap 500 kV OPEN Line LOW MON_500.0 (40683) TO SACJWA T_500.0 (40917) CKT 1 N-1: Malin 500/230 Xfmr OPEN Transformer MALIN_230.0 (45189) TO MALIN_500.0 (40687) CKT 1 N-1: Malin-Hilltop 230 kV OPEN Line CANBYTAP_230.0 (40171) TO HIL TOP_230.0 (40537) CKT 1 N-1: Malin-Round Mtn #1 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-1: Malin-Round Mtn #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-1: Malin-Summer Lake 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-1: Maple Vly-Rocky RH 345 kV OPEN MultiSectionLine MAPLE VL_345.0 (40691) TO ROCKY RH_345.0 (40891) CKT 1 N-1: Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-1: Marion-Santiam 500 kV OPEN Line MARION_500.0 (40699) TO SANTIAM_500.0 (40941) CKT 1 N-1: Marion-Santiam 500 kV OPEN Shunt SANTIAM_230.0 (40939) #s N-1: McLouglin-Ostrander 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-1: McNary 500/230 kV Xfmr OPEN Transformer MCNARY_500.0 (40723) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary S2-McNary S3 230 kV OPEN Line MCNRY S2_230.0 (41352) TO MCNRY S3_230.0 (41353) CKT 1 N-1: McNary-Board T1 230 kV OPEN Line BOARD T1_230.0 (40121) TO MCNRY S1_230.0 (41351) CKT 1 N-1: McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-1: McNary-Longhorn 500 kV OPEN Line LONGHORN_500.0 (40724) TO MCNARY_500.0 (40723) CKT 1 N-1: McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-1: McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-1: McNary-Roundup 230 kV OPEN Line MCNRY S1_230.0 (41351) TO ROUNDUP_230.0 (40905) CKT 1 N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJWA T_500.0 (40917) N-1: McNary-Sac Tap-Low Mon 500 kV OPEN Bus SACJAWEA_500.0 (40913) N-1: McNary-Sac Tap-Low Mon 500 kV CLOSE Gen ICE H1-2_ 13.8 (40559) #1 N-1: Midpoint-Hemingway 500 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-1: Midpoint-Hemingway 500 kV + PTSN Shunt SET SWITCHED SHUNT AT BUS PTRSNFLT_230.0 (62030) TO 63.4 MVR N-1: Midpoint-Humboldt 345 kV OPEN Bus IDAHO-NV_345.0 (64061) N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS HIL TOP_230.0 (40537) TO 52.2 MVR N-1: Midpoint-Humboldt 345 kV SET SWITCHED SHUNT AT BUS ALTURAS_ 69.0 (45005) TO 10.8 MVR N-1: Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Line OLYMPIA_500.0 (40797) TO PAUL_500.0 (40821) CKT 1 N-1: Olympia-Paul 500 kV OPEN Shunt OLY E_230.0 (40794) #s N-1: Ontario-Caldwell 230 kV OPEN MultiSectionLine CALDWELL_230.0 (60110) TO LANGLEY_230.0 (60266) CKT 1 Page 708 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-1: Ostrander-Knight 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-1: Ostrander-Pearl 500 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-1: Ostrander-Troutdale 500 kV OPEN Line OSTRNDER_500.0 (40809) TO TROUTDAL_500.0 (41095) CKT 1 N-1: Oxbow-Brownlee #2 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 2 N-1: Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-1: Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-1: Paul-Satsop 500 kV OPEN Line PAUL_500.0 (40821) TO SATSOP_500.0 (40949) CKT 1 N-1: Pearl-Keeler 500 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-1: Pearl-Keeler 500 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-1: Pinto-Four Corner 345 kV OPEN Bus PINTO PS_345.0 (66235) N-1: Ponderosa A 500/230 kV Xfmr OPEN Transformer PONDROSA_500.0 (40837) TO PONDROSS_230.0 (40838) CKT 1 N-1: Ponderosa B 500/230 kV Xfmr OPEN Transformer PONDROSB_500.0 (40834) TO PONDROSN_230.0 (40836) CKT 1 N-1: Raver-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-1: Raver-Tacoma 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-1: Red Butte-Harry Allen 345 kV OPEN Bus H ALLEN_345.0 (18001) N-1: Red Butte-Harry Allen 345 kV OPEN Bus HA PS_345.0 (18002) N-1: Red Butte-Harry Allen 345 kV OPEN Bus UTAH-NEV_345.0 (67657) N-1: Robinson-Harry Allen 500 kV OPEN Line ROBINSON_500.0 (64895) TO H ALLEN_500.0 (18450) CKT 1 N-1: Rock Ck-Wautoma 500 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Round Mtn-Table Mtn 500 kV OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-1: Roundup-Lagrande 230 kV OPEN Line LAGRANDE_230.0 (40621) TO ROUNDUP_230.0 (40905) CKT 1 N-1: Schultz-Sickler 500 kV OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-1: Schultz-Vantage 500 kV OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-1: Schultz-Wautoma 500 kV OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-1: Sigurd-Glen Canyon 230 kV OPEN Bus SIGURDPS_230.0 (66355) N-1: Slatt 500/230 kV Xfmr OPEN Transformer SLATT_500.0 (40989) TO SLATT_230.0 (40986) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-1: Slatt-Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-1: Snok Tap-Snoking 500 kV OPEN Line SNOK TAP_500.0 (41001) TO SNOKING_500.0 (41007) CKT 1 N-1: Table Mtn-Tesla 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-1: Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO VACA-DIX_500.0 (30030) CKT 1 N-1: Vantage 500/230 kV Xfmr #1 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 1 N-1: Vantage 500/230 kV Xfmr #2 OPEN Transformer VANTAGE_500.0 (41113) TO VANTAGE_230.0 (41111) CKT 2 N-1: Walla Walla-Talbot 230 kV OPEN Line TALBOT_230.0 (44912) TO WALAWALA_230.0 (45327) CKT 1 N-1: Walla Walla-Wallula 230 kV OPEN Line WALAWALA_230.0 (45327) TO WALLULA_230.0 (45331) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Ashe-Slatt 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Buckley-Marion 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Buckley 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN MultiSectionLine ASHE R1_500.0 (40062) TO MARION_500.0 (40699) CKT 2 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Marion & Slatt-John Day 500 kV OPEN Bus ASHE R1_500.0 (40062) N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & McNary-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Line ASHE_500.0 (40061) TO SLATT_500.0 (40989) CKT 1 N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV OPEN Bus COYOTETP_500.0 (40725) N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS OPEN InjectionGroup RAS Libby Gen Drop N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHEL_230.0 (43039) TO ROUNDB N_230.0 (43483) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Round Butte 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 Page 709 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN MultiSectionLine BETHEL_230.0 (43039) TO SANTIAM_230.0 (40939) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap BETHEL5_500.0 (43041) TO BETHCRS1_500.0 (43491) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Line BETHCRS1_500.0 (43491) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Bethel-Cedar Spring 500 kV & Bethel-Santiam 230 kV OPEN Series Cap CDR SPRG_500.0 (43950) TO CDRSBET1_500.0 (43951) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV OPEN MultiSectionLine BIGEDDY2_230.0 (41342) TO CHEMAWA_230.0 (40213) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV OPEN Bus PARKDALE_230.0 (40813) N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 2 N-2: Boise Bench-Brownlee #1 & #2 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO31_230.0 (61996) CKT 3 TO 50 % of present N-2: Boise Bench-Brownlee #1 & #2 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIHOR41_230.0 (61995) CKT 4 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO BROWNLEE_230.0 (60095) CKT 3 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV OPEN MultiSectionLine BOISEBCH_230.0 (60045) TO HORSEFLT_230.0 (60102) CKT 4 N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO11_230.0 (61998) CKT 1 TO 50 % of present N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV SET SERIES CAP REACTANCE AT BOISEBCH_230.0 (60045) TO BOIBRO21_230.0 (61997) CKT 2 TO 50 % of present N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 1 N-2: Bridger-Populus #1 & #2 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine POPULUS_345.0 (67790) TO BRIDGER_345.0 (60085) CKT 2 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV OPEN MultiSectionLine BRIDGER_345.0 (60085) TO 3MIKNOLL_345.0 (60084) CKT 1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV CLOSE Shunt KINPORT_345.0 (60190) #1 N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV SET SWITCHED SHUNT AT BUS DILLON S_ 69.0 (62345) TO 27.9 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR1EAST_500.0 (40451) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR1EAST_500.0 (40451) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN1_500.0 (62013) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Series Cap GAR2EAST_500.0 (40453) TO GARRISON_500.0 (40459) CKT 1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line GAR2EAST_500.0 (40453) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Line BROADVU_500.0 (62046) TO TOWN2_500.0 (62012) CKT 2 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 4_ 26.0 (62047) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Gen COLSTP 2_ 22.0 (62049) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt PTRSNFLT_230.0 (62030) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt OREBASIN_230.0 (66145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt FRANNIE2_ 34.5 (67145) #1 N-2: Broadview-Garrisont #1 & #2 500 kV + RAS SET SWITCHED SHUNT AT BUS ROSEBUD_230.0 (63012) TO -10 MVR N-2: Broadview-Garrisont #1 & #2 500 kV + RAS OPEN Shunt GARLAND1_ 34.5 (67147) #1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN MultiSectionLine OXBOW_230.0 (60275) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Line LOLO_230.0 (48197) TO IMNAHA_230.0 (60278) CKT 1 N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line OXBOW_230.0 (60275) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Line HELLSCYN_230.0 (60150) TO BROWNLEE_230.0 (60095) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Transformer HELLSCYN_230.0 (60150) TO HELSCYN1_ 14.4 (60151) CKT 1 N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV OPEN Gen HELSCYN1_ 14.4 (60151) #1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: Buckley-Marion & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV OPEN Line MONROE_230.0 (40747) TO NOVELTY_230.0 (42304) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Line CHIEF JO_500.0 (40233) TO SICKLER_500.0 (40973) CKT 1 N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus CHIEF J3_345.0 (40223) N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV OPEN Bus SNOHOMS3_345.0 (40993) N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Line CHIEF JO_500.0 (40233) TO COULEE_500.0 (40287) CKT 1 N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus CHIEF J4_345.0 (40225) Page 710 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV OPEN Bus SNOHOMS4_345.0 (40994) N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO HANFORD_500.0 (40499) CKT 1 N-2: Coulee-Hanford & Hanford-Vantage 500 kV OPEN Line HANFORD_500.0 (40499) TO VANTAGE_500.0 (41113) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Coulee-Schultz #1 & #2 500 kV OPEN MultiSectionLine COULEE_500.0 (40287) TO SCHULTZ_500.0 (40957) CKT 2 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN Line ING 500_500.0 (50194) TO CUSTER W_500.0 (40323) CKT 1 N-2: CusterW-Ing500 & CusterW-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA1_ 13.8 (42111) #1 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen FREDONA2_ 13.8 (42112) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN2_ 13.8 (42042) #2 N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Gen WHITHRN3_ 13.8 (42043) #3 N-2: CusterW-Monroe #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS BCH-NW Gen Drop Units BY 'BCH-NW_gen_drop_value1' MW in generator merit order by opening N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO1_ 13.8 (41214) #I N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO3_ 13.8 (41216) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO4_ 13.8 (41217) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO5_ 13.8 (41218) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO6_ 13.8 (41219) #F N-2: CusterW-Monroe #1 & #2 500 kV + RAS OPEN Load INTALCO7_ 13.8 (41220) #F N-2: DC-BIPOLE OPEN Shunt MALIN_500.0 (40687) #s N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: DC-BIPOLE CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: DC-BIPOLE CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: DC-BIPOLE CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: DC-BIPOLE INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: DC-BIPOLE INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: DC-BIPOLE INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: DC-BIPOLE CHANGE INJECTION GROUP RAS PDCI Gen Drop Units BY 'PDCI_gen_drop_value_less300' MW in generator merit order by opening N-2: DC-BIPOLE OPEN Bus SYLMAR1_230.0 (26097) N-2: DC-BIPOLE OPEN Bus SYLMAR2_230.0 (26099) N-2: DC-BIPOLE OPEN Shunt SYLMAR S_230.0 (24147) #b N-2: DC-BIPOLE OPEN Shunt SYLMARLA_230.0 (26094) #b N-2: DC-BIPOLE OPEN Shunt BIGEDDY2_230.0 (41342) #s N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #b N-2: DC-BIPOLE CLOSE Shunt ANTELOPE_230.0 (24401) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS ANTELOPE_230.0 (24401) TO 158.2 MVR N-2: DC-BIPOLE CLOSE Shunt BARRE_230.0 (24016) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS BARRE_230.0 (24016) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt CHINO_230.0 (24025) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS CHINO_230.0 (24025) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt DEVERS_230.0 (24804) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS DEVERS_230.0 (24804) TO 316.8 MVR N-2: DC-BIPOLE CLOSE Shunt EL NIDO_230.0 (24040) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS EL NIDO_230.0 (24040) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt GOULD_230.0 (24059) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS GOULD_230.0 (24059) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LCIENEGA_230.0 (24082) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LCIENEGA_230.0 (24082) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt LAGUBELL_230.0 (24076) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS LAGUBELL_230.0 (24076) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOMW_230.0 (24093) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOMW_230.0 (24093) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt MIRALOME_230.0 (25656) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRALOME_230.0 (25656) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MIRAGE_230.0 (24806) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MIRAGE_230.0 (24806) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt MOORPARK_230.0 (24099) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS MOORPARK_230.0 (24099) TO 158.4 MVR Page 711 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: DC-BIPOLE CLOSE Shunt OLINDA_230.0 (24100) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS OLINDA_230.0 (24100) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt PADUA_230.0 (24112) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PADUA_230.0 (24112) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt PARDEE_230.0 (24114) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS PARDEE_230.0 (24114) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt RIOHONDO_230.0 (24126) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS RIOHONDO_230.0 (24126) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt SANBRDNO_230.0 (24132) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS SANBRDNO_230.0 (24132) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt S.CLARA_230.0 (24128) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS S.CLARA_230.0 (24128) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #b N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #2 N-2: DC-BIPOLE CLOSE Shunt VALLEYSC_115.0 (24160) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VALLEYSC_115.0 (24160) TO 187.2 MVR N-2: DC-BIPOLE CLOSE Shunt VILLA PK_230.0 (24154) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VILLA PK_230.0 (24154) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VINCENT_230.0 (24155) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VINCENT_230.0 (24155) TO 158.4 MVR N-2: DC-BIPOLE CLOSE Shunt VSTA_230.0 (24901) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS VSTA_230.0 (24901) TO 79.2 MVR N-2: DC-BIPOLE CLOSE Shunt WALNUT_230.0 (24158) #ei N-2: DC-BIPOLE SET SWITCHED SHUNT AT BUS WALNUT_230.0 (24158) TO 79.2 MVR N-2: DC-BIPOLE OPEN Bus CELILO4_230.0 (41314) N-2: DC-BIPOLE OPEN Bus CELILO3_230.0 (41313) N-2: DC-BIPOLE OPEN Bus CELILO2_500.0 (41312) N-2: DC-BIPOLE OPEN Bus CELILO1_500.0 (41311) N-2: Double Palo Verde OPEN Shunt CAPTJACK_500.0 (45035) #s N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c1 N-2: Double Palo Verde CLOSE Shunt CAPTJACK_500.0 (45035) #c2 N-2: Double Palo Verde OPEN Shunt MALIN_500.0 (40687) #s N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c1 N-2: Double Palo Verde CLOSE Shunt MALIN_500.0 (40687) #c2 N-2: Double Palo Verde CLOSE Shunt OLINDA_500.0 (30020) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c1 N-2: Double Palo Verde CLOSE Shunt TABLE MT_500.0 (30015) #c2 N-2: Double Palo Verde INSERVICE SeriesCap GRIMAL23_500.0 (90070) TO GRIMAL24_500.0 (90071) CKT 2 N-2: Double Palo Verde INSERVICE SeriesCap PONSUM13_500.0 (90101) TO PONSUM14_500.0 (90102) CKT 1 N-2: Double Palo Verde INSERVICE SeriesCap CAPPON13_500.0 (90139) TO CAPPON14_500.0 (90140) CKT 1 N-2: Double Palo Verde OPEN Gen PALOVRD2_ 24.0 (14932) #1 N-2: Double Palo Verde OPEN Gen PALOVRD1_ 24.0 (14931) #1 N-2: Double Palo Verde CHANGE LOAD AT BUS AGUAFAPS_ 69.0 (14400) BY -120 MW (cnst pf) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV OPEN Line COVINGTN_230.0 (40303) TO MAPLEV12_230.0 (40692) CKT 2 N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_345.0 (40691) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus ROCKY RH_345.0 (40891) N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV OPEN Bus MAPLE VL_500.0 (40693) N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 2 N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Shunt GARRISON_500.0 (40459) #r N-2: Garrison-Taft #1 & #2 500 kV + RAS OPEN Gen COLSTP 3_ 26.0 (62048) #1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN Line CDR SPRG_500.0 (43950) TO GRASSLND_500.0 (43049) CKT 1 N-2: Grassland-Cedar Spring & Slatt - Buckley 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO SLATT_500.0 (40989) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line GRASSLND_500.0 (43049) TO COYOTE_500.0 (43123) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line SLATT_500.0 (40989) TO COYOTETP_500.0 (40725) CKT 1 N-2: Grassland-Coyote & Slatt - Longhorn 500 kV OPEN Line COYOTETP_500.0 (40725) TO LONGHORN_500.0 (40724) CKT 1 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS OPEN Bus PONDROSB_500.0 (40834) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus PONDROSA_500.0 (40837) N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 Page 712 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order by opening N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS OPEN Bus GRIZZ R3_500.0 (40488) N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO MALIN_500.0 (40687) CKT 2 N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CHANGE INJECTION GROUP RAS Coulee and Chief Jo gen drop BY -2700 MW in generator merit order N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS OPEN MultiSectionLine MALIN_500.0 (40687) TO SUMMER L_500.0 (41043) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line ASHE_500.0 (40061) TO HANFORD_500.0 (40499) CKT 1 N-2: Hanford-Ashe & Hanford-Low Mon 500 kV OPEN Line HANFORD_500.0 (40499) TO LOW MON_500.0 (40683) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Hanford-Wautoma #1 & #2 500 kV OPEN Line HANFORD_500.0 (40499) TO WAUTOMA_500.0 (41138) CKT 2 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy #1 & #2 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN Line BIG EDDY_500.0 (40111) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Big Eddy & John Day-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 1 N-2: John Day-Grizzly #1 & #2 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine GRIZZLY_500.0 (40489) TO JOHN DAY_500.0 (40585) CKT 2 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO GRIZZLY_500.0 (40489) CKT 1 N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Buckley-Marion 500 kV OPEN MultiSectionLine BUCKLEY_500.0 (40155) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN MultiSectionLine JOHN DAY_500.0 (40585) TO MARION_500.0 (40699) CKT 1 N-2: John Day-Marion & Marion-Pearl 500 kV OPEN Line MARION_500.0 (40699) TO PEARL_500.0 (40827) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus CASCADTP_230.0 (40185) N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV OPEN Bus WINDSHAR_230.0 (41155) N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV OPEN Line BIG EDDY_500.0 (40111) TO OSTRNDER_500.0 (40809) CKT 1 N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus ROSS_345.0 (40901) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN Bus MCNARY_345.0 (40721) N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus ALFALFA_230.0 (40039) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN Bus OUTLOOK_230.0 (45229) N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV OPEN MultiSectionLine OSTRNDER_500.0 (40809) TO KNIGHT_500.0 (41450) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 1 N-2: Lower Granite-Central Ferry #1 & #2 500 kV OPEN Line CEN FERY_500.0 (40666) TO LOW GRAN_500.0 (40679) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN MultiSectionLine MALIN_500.0 (40687) TO ROUND MT_500.0 (30005) CKT 2 N-2: Malin-Round Mtn #1 & #2 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS1_ 13.2 (38775) #6 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen BUENAVS2_ 13.2 (38780) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG1_ 13.2 (38750) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DOS AMG2_ 13.2 (38755) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD1_ 13.2 (38785) #5 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #2 Page 713 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #3 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WHLR RD2_ 13.2 (38790) #4 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP1_ 13.2 (38795) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP2_ 13.2 (38800) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #1 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP3_ 13.2 (38805) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen WINDGAP4_ 13.2 (38810) #2 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #10 N-2: Malin-Round Mtn #1 & #2 500 kV OPEN Gen DELTA E_ 13.2 (38760) #11 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line JOHN DAY_500.0 (40585) TO ROCK CK_500.0 (41401) CKT 1 N-2: McNary-John Day & Rock Creek-John Day 500 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN MultiSectionLine MCNARY_345.0 (40721) TO ROSS_345.0 (40901) CKT 1 N-2: McNary-John Day 500 kV & McNary-Ross 345 kV OPEN Line MCNARY_500.0 (40723) TO JOHN DAY_500.0 (40585) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Line HORSE HV_230.0 (40549) TO MCNRY S1_230.0 (41351) CKT 1 N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus MCNARY_345.0 (40721) N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV OPEN Bus ROSS_345.0 (40901) N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN MultiSectionLine MIDPOINT_500.0 (60240) TO HEMINWAY_500.0 (60155) CKT 1 N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV OPEN Line KING_230.0 (60177) TO MIDPOINT_230.0 (60232) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CUSTER W_500.0 (40323) TO MONROE_500.0 (40749) CKT 1 N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV OPEN MultiSectionLine CHIEF JO_500.0 (40233) TO MONROE_500.0 (40749) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO NAPAVINE_500.0 (40774) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line ALLSTON_500.0 (40045) TO PAUL_500.0 (40821) CKT 2 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS CHANGE INJECTION GROUP RAS P-A/N-A Gen Drop Units BY 'Paul-Allston_gen_drop_value_less300' MW in generator merit order by opening N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line HOLCOMB_115.0 (40539) TO VALLEY T_115.0 (41272) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 1 N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS OPEN Line CHEHALIS_230.0 (40207) TO LONGVW T_230.0 (40673) CKT 2 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Paul-Raver & Raver-Covingt4 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line KEELER_500.0 (40601) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS OPEN Line PEARL #_230.0 (43773) TO SHERWOOD_230.0 (43527) CKT 1 N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS CHANGE INJECTION GROUP RAS South of Allston Gen Drop BY 'Keeler-Pearl_gen_drop_value_less300' MW in generator merit order by opening N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV OPEN MultiSectionLine BIGEDDY3_230.0 (41343) TO MCLOUGLN_230.0 (43313) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Line OSTRNDER_500.0 (40809) TO PEARL_500.0 (40827) CKT 1 N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV OPEN Bus OSTRNDER_230.0 (40810) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT4_500.0 (40302) N-2: Raver-Covington #1 & #2 500 kV OPEN Bus COVINGT5_500.0 (40306) N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line ECHOLAKE_500.0 (40381) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Echo Lake & Raver-Schultz 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul & Napavine-Paul 500 kV OPEN Line NAPAVINE_500.0 (40774) TO PAUL_500.0 (40821) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus COULEE_300.0 (40285) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV OPEN Bus OLYMPIA_300.0 (40795) N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Line PAUL_500.0 (40821) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV OPEN Bus CENTR SS_230.0 (47748) Page 714 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV CHANGE INJECTION GROUP RAS Raver-Paul Gen Drop Units BY 'RAVER-PAUL_gen_drop_value_less300' MW in generator merit order by opening N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Schultz #1 & #2 500 kV OPEN MultiSectionLine ECHOLAKE_500.0 (40381) TO SCHULTZ_500.0 (40957) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN Line COVINGT4_500.0 (40302) TO RAVER_500.0 (40869) CKT 1 N-2: Raver-Tacoma & Raver-Covingt4 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO TACOMA_500.0 (41051) CKT 1 N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV OPEN Bus CHRISTOP_230.0 (42505) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 1 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN MultiSectionLine ROUND MT_500.0 (30005) TO TABLE MT_500.0 (30015) CKT 2 N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA A_ 13.2 (38820) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA B_ 13.2 (38815) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA D_ 13.2 (38765) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA E_ 13.2 (38760) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DELTA C_ 13.2 (38770) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP3_ 13.2 (38805) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OPEN Transformer ROUND MT_500.0 (30005) TO RD MT 1M_500.0 (30065) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_DLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO SICKLER_500.0 (40973) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS OPEN Line SCHULTZ_500.0 (40957) TO VANTAGE_500.0 (41113) CKT 1 N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS CHANGE INJECTION GROUP RAS NOH Gen Drop Units BY 'NOH_SLL_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN MultiSectionLine TABLE MT_500.0 (30015) TO TESLA_500.0 (30040) CKT 1 N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CHANGE INJECTION GROUP RAS High Gen Drop Units BY 'High_gen_drop_value_less300' MW in generator merit order by opening N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 1_ 12.5 (38825) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 2_ 12.5 (38830) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 3_ 12.5 (38835) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 4_ 12.5 (38840) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HYATT 5_ 12.5 (38845) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT1_ 13.8 (38700) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT2_ 13.8 (38705) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT3_ 13.8 (38710) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus THERMLT4_ 13.8 (38715) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 4-5_ 13.8 (31782) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMCP_ 13.8 (25619) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMDP_ 13.8 (25620) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA A_ 13.2 (38820) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA B_ 13.2 (38815) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA D_ 13.2 (38765) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA E_ 13.2 (38760) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DELTA C_ 13.2 (38770) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS1_ 13.2 (38775) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus BUENAVS2_ 13.2 (38780) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP2_ 13.2 (38800) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP3_ 13.2 (38805) Page 715 of 776 Appendix L - 16hs2a_2250idnw_N_nvmod Studied Contingencies & Associated Actions Contingency Studied Actions Taken in the Contingency N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP4_ 13.2 (38810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WINDGAP1_ 13.2 (38795) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD2_ 13.2 (38790) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus WHLR RD1_ 13.2 (38785) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG2_ 13.2 (38755) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus DOS AMG1_ 13.2 (38750) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMBP_ 13.2 (25618) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus PEARBMAP_ 13.2 (25617) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBOU2-3_ 11.5 (31808) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus CRBU 1_ 11.5 (31810) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 1_ 18.0 (34600) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 2_ 18.0 (34602) N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OPEN Bus HELMS 3_ 18.0 (34604) N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus ADDY N_230.0 (40021) N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL S3_230.0 (40090) TO LANCASTR_230.0 (40624) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Lancaster 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Line BELL BPA_115.0 (40087) TO BIGELOW_115.0 (40113) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine LANCASTR_230.0 (40624) TO NOXONBPA_230.0 (40787) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN MultiSectionLine BELL SC_500.0 (40096) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV OPEN Bus BELL SC_500.0 (40096) N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine DWORSHAK_500.0 (40369) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN MultiSectionLine GARRISON_500.0 (40459) TO TAFT_500.0 (41057) CKT 1 N-2: Taft-Dworshak & Garrison-Taft #1 500kV OPEN Shunt GARRISON_500.0 (40459) #r N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Bus MABTON_230.0 (40685) N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV OPEN Line ROCK CK_500.0 (41401) TO WAUTOMA_500.0 (41138) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN MultiSectionLine RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 1 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 3 N-3: Schultz-Raver #1 & #2 & #3 500 kV OPEN Line RAVER_500.0 (40869) TO SCHULTZ_500.0 (40957) CKT 4 Page 716 of 776 Appendix M 16hs2a_2250idnw_ms_swips Base Case (MSTI & SWIP, SWIP South – 1770 MW) Page 717 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 11L12 Meridian-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11L22 Capt Jack-Klam Falls 500 kV+KFGEN2+ST No Violations BF 11R1 Meridian-Klam Falls 500 kV & Meridian 500/230 kV Xfmr MERIDINP (45197) -> MERIDINP (45195) CKT 2 at MERIDINP Branch MVA 362.2 670.8 650.0 103.2% 1286.0 52.2% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 636.6 1188.8 979.0 121.4% 1287.7 92.3% BF 11R6 Meridian-Dixonville 500 kV & Meridian 500/230 kV Xfmr GLENDL (45113) -> GRANT PS (45123) CKT 1 at GLENDL Branch Amp 302.0 759.7 722.9 105.1% 1265.2 60.0% BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4028 Taft-Dworshak & Taft Reactor 500kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1583.0 1550.0 102.1% 1782.5 88.8% BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1573.4 1550.0 101.5% 1782.5 88.3% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1650.5 2833.4 2442.0 116.0% 3235.5 87.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1650.5 2833.4 2199.9 128.8% 3235.5 87.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1648.1 2825.4 2666.9 105.9% 3999.9 70.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1642.7 2817.7 2667.0 105.7% 4000.0 70.4% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1604.5 2736.1 2699.7 101.3% 3999.9 68.4% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at ROUND MT Branch Amp 1600.8 2724.1 2699.7 100.9% 4000.0 68.1% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4111 Hot Springs-Taft & Taft-Dworshak 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1593.8 1550.0 102.8% 1782.5 89.4% BF 4114 Garrison-Taft #1 +Taft Reactor 500kV No Violations BF 4119 Garrison-Taft #1 & Taft-Bell 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1556.6 1550.0 100.4% 1782.5 87.3% BF 4148 Hot Springs-Taft & Garrison-Taft #2 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1650.5 2866.5 2442.0 117.4% 3235.5 88.6% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1650.5 2866.5 2199.9 130.3% 3235.5 88.6% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1648.1 2858.2 2666.9 107.2% 3999.9 71.5% BF 4186 (or 4582) Malin-Round Mtn 500 kV & Malin 500/230 Xfmr MALROU23 (40698) -> ROUND MT (30005) CKT 2 at ROUND MT Branch Amp 1642.7 2850.7 2667.0 106.9% 4000.0 71.3% BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1560.9 1550.0 100.7% 1782.5 87.6% BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr No Violations BF 4234 McNary-Longhorn & McNary-Hermcalp 500 kV No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1568.5 1550.0 101.2% 1782.5 88.0% BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4268 Monroe-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4276 Ing500-CusterW 500 kV & CusterW 500/230 Xfmr No Violations BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.4 327.7 320.0 102.4% 370.0 88.6% BF 4280 Keeler-Pearl & Pearl-Marion 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 678.3 1040.8 950.0 109.6% 1286.0 80.9% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.4 334.4 320.0 104.5% 370.0 90.4% BF 4280 Keeler-Pearl & Pearl-Ostrander 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 678.3 1052.4 950.0 110.8% 1286.0 81.8% BF 4287 Pearl-Ostrander 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4293 Schultz-Raver & Raver Covington5 500 kV No Violations BF 4336 Chief Jo-Sickler 500 kV & Sickler 500/230 Xfmr No Violations BF 4336 Sickler-Schultz 500 kV & Sickler 500/230 Xfmr No Violations Page 718 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1050.0 1009.1 104.0% 1285.2 81.7% BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4432 Ostrander-Troutdale & Split Ostrander 500 kV No Violations BF 4439 Big Eddy-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4442 Big Eddy-Ostrander 500 kV & Ostrander-McLoughlin 230 kV No Violations BF 4448 Knight-Ostrander & Ostrander-Troutdale 500 kV No Violations BF 4450 Knight-Ostrander & Ostrander-Pearl 500 kV No Violations BF 4502 Paul-Allston & Allston-Keeler 500 kV + RAS No Violations BF 4510 Pearl-Marion 500 kV & Pearl 500/230 Xfmr & Pearl Caps No Violations BF 4526 CusterW-Monroe & Monroe-Echo Lake 500 kV + RAS No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV No Violations BF 4530 Raver-Paul & Paul-Satsop 500 kV + RAS No Violations BF 4540 Paul-Napavine & Paul-Satsop 500 kV No Violations BF 4542 Paul-Allston 500 kV & Center G2 No Violations BF 4542 Paul-Napavine 500 kV & Center G1 No Violations BF 4550 Olympia-Paul & Paul-Allston 500 kV No Violations BF 4554 Olympia-Paul 500 kV & Tono 500/115 Xfmr No Violations BF 4572 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1573.0 1550.0 101.5% 1782.5 88.2% BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4652 Taft-Dworshak & Taft-Hatwai 500 kV + RAS No Violations BF 4672 Monroe-Chief Jo 500 kV & Monroe Caps No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4690 Paul-Allston 500 kV & Allston 500/230 Xfmr No Violations BF 4700 Hatwai 500kV & 230 kV + RAS No Violations BF 4708 Hatwai 500 kV Bus TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1629.3 1550.0 105.1% 1782.5 91.4% BF 4728 Coulee-Chief Jo 500 kV & Cheif Jo 500/230 Xfmr No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1609.3 1550.0 103.8% 1782.5 90.3% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1561.4 1550.0 100.7% 1782.5 87.6% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1570.1 1550.0 101.3% 1782.5 88.1% BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1567.7 1550.0 101.1% 1782.5 88.0% BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1550.8 1550.0 100.1% 1782.5 87.0% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1571.5 1550.0 101.4% 1782.5 88.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1581.0 1550.0 102.0% 1782.5 88.7% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Buckley & Slatt-Boardman 500 kV No Violations BF 5006 Slatt-Longhorn & Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt & Slatt-Buckley 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1576.1 1550.0 101.7% 1782.5 88.4% BF 5018 Ashe-Slatt & Slatt-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1562.3 1550.0 100.8% 1782.5 87.6% BF 5021 Slatt-John Day & Slatt-Longhorn 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1600.5 1550.0 103.3% 1782.5 89.8% BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1554.3 1550.0 100.3% 1782.5 87.2% BF 5114 Echo Lake-Raver & Echo Lake- Snok Tap 500 kV No Violations BF 5117 Echo Lake-Maple Valley & Echo Lake-Raver 500 kV No Violations Page 719 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5187 McNary-Longhorn & Longhorn-Slatt 500 kV No Violations BF 5193 Grassland-Coyote & Coyote-Longhorn 500 kV No Violations BF 5211 Low Mon-McNary 500 kV & McNary 500/230 kV Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1573.0 1550.0 101.5% 1782.5 88.2% BF 5214 Low Mon-McNary & Calpine PH 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1571.7 1550.0 101.4% 1782.5 88.2% BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1557.4 1550.0 100.5% 1782.5 87.4% BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1563.6 1550.0 100.9% 1782.5 87.7% BF 5266 Slatt-Buckly 500 kV No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1714.9 1550.0 110.6% 1782.5 96.2% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1317.4 1237.0 106.5% 1396.0 94.4% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 945.5 920.0 102.8% 1046.8 90.3% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1590.9 1550.0 102.6% 1782.5 89.3% BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 2509.4 2477.9 101.3% 3999.9 62.7% BF Lolo 230kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1559.0 1550.0 100.6% 1782.5 87.5% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1725.3 1550.0 111.3% 1782.5 96.8% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1317.2 1237.0 106.5% 1396.0 94.4% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 943.0 920.0 102.5% 1046.8 90.1% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1022.0 1009.1 101.3% 1285.2 79.5% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1723.2 1550.0 111.2% 1782.5 96.7% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1314.2 1237.0 106.2% 1396.0 94.1% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 939.5 920.0 102.1% 1046.8 89.7% BF PGE Grassland-Cedar Sp 500kV & Grassland-Hem 500kV+PTSN ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1021.4 1009.1 101.2% 1285.2 79.5% BF PGE Grassland-Coyote Sp 500kV & Carty Gas Plant No Violations BF PGE Grassland-Slatt 500kV & Boardman Plant No Violations Bus: Alvey 500 kV + RAS ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1031.0 1009.1 102.2% 1285.2 80.2% Bus: Bell BPA 500 kV No Violations Bus: Buckley 500 kV No Violations Bus: Dixonville 500 kV No Violations Bus: Hot Springs 500 kV No Violations Bus: Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 80.1 94.0 94.0 100.0% 139.0 67.6% Bus: Rock Creek 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1563.4 1550.0 100.9% 1782.5 87.7% Bus: Sickler 500 kV No Violations Bus: Summer Lake 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1575.7 1550.0 101.7% 1782.5 88.4% N-1: Allston-Keeler 500 kV + RAS CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 80.1 94.0 94.0 100.0% 139.0 67.6% N-1: Allston-Napavine 500 kV No Violations N-1: Allston-Paul #2 500 kV No Violations N-1: Alvery-Dixonville 500 kV No Violations N-1: Alvey-Marion 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1092.4 1009.1 108.3% 1285.2 85.0% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations Page 720 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1568.1 1550.0 101.2% 1782.5 88.0% N-1: Bell-Coulee 500 kV No Violations N-1: Bell-Taft 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Broadview-Garrison #1 500 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 1 at COTWDWAP Branch Amp 299.0 866.4 785.7 110.3% 926.3 93.5% N-1: Captain Jack-Olinda 500 kV COTWDWAP (37545) -> OLINDAW (37565) CKT 2 at COTWDWAP Branch Amp 299.0 866.4 785.7 110.3% 926.3 93.5% N-1: Captain Jack-Olinda 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1650.5 2495.4 2442.0 102.2% 3235.5 77.1% N-1: Captain Jack-Olinda 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1650.5 2495.4 2199.9 113.4% 3235.5 77.1% N-1: Captain Jack-Olinda 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1809.2 2407.0 2199.9 109.4% 3280.5 73.4% N-1: Captain Jack-Olinda 500 kV ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1793.9 2386.7 2199.9 108.5% 3280.5 72.8% N-1: Captain Jack-Olinda 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABVAC11 Branch Amp 2142.9 2770.4 2667.0 103.9% 3999.9 69.3% N-1: Captain Jack-Olinda 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 2770.4 2477.9 111.8% 3999.9 69.3% N-1: Captain Jack-Olinda 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at TABVAC12 Branch Amp 2118.3 2733.8 2667.0 102.5% 4000.0 68.3% N-1: CaptJack-Kfalls 500 kV No Violations N-1: Cascade Crossing 500 kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1033.8 1009.1 102.4% 1285.2 80.4% N-1: Cedar Hill-Robinson 500 kV (SWIP) TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 2490.7 2477.9 100.5% 3999.9 62.3% N-1: Chief Jo-Coulee 500 kV No Violations N-1: Chief Jo-Monroe 500 kV No Violations N-1: Chief Jo-Sickler 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Covington4-Raver 500 kV No Violations N-1: Covington5-Raver 500 kV No Violations N-1: Coyote-Longhorn 500 kV No Violations N-1: CusterW-Monroe 500 kV No Violations N-1: Dixonville-Meridian 500 kV DIXNV230 (44900) -> DIXONVLE (45093) CKT 1 at DIXONVLE Branch Amp 636.6 1146.3 979.0 117.1% 1287.7 89.0% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1636.9 1550.0 105.6% 1782.5 91.8% N-1: Dworshak-Taft 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1583.0 1550.0 102.1% 1782.5 88.8% N-1: Echo Lake-Maple Valley 500 kV No Violations N-1: Echo Lake-Raver 500 kV No Violations N-1: Echo Lake-Schultz 500 kV No Violations Page 721 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Echo Lake-Snok Tap 500 kV No Violations N-1: Garrison-Taft #2 500 kV No Violations N-1: Goldhill-Placer 115 kV No Violations N-1: Grassland-Coyote 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1553.1 1550.0 100.2% 1782.5 87.1% N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1583.9 1550.0 102.2% 1782.5 88.9% N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hatwai 500/230 kV Xfmr + RAS No Violations N-1: Hatwai-Lolo 230 kV No Violations N-1: Hatwai-Low Gran 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1561.2 1550.0 100.7% 1782.5 87.6% N-1: Hatwai-N Lewiston 230 kV No Violations N-1: Hells Canyon-Brownlee 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1554.1 1550.0 100.3% 1782.5 87.2% N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 948.4 920.0 103.1% 1046.8 90.6% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1707.2 1550.0 110.1% 1782.5 95.8% N-1: Hemingway-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1302.7 1237.0 105.3% 1396.0 93.3% N-1: Hemingway-Grassland 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 931.8 920.0 101.3% 1046.8 89.0% N-1: Hemingway-Grassland 500 kV + FACRI TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1609.5 1550.0 103.8% 1782.5 90.3% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1700.7 2768.2 2400.0 115.3% 3199.9 86.5% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1708.4 2787.7 2400.0 116.2% 3800.0 73.4% N-1: Hemingway-Grassland 500 kV + PTSN Shunt TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1713.7 1550.0 110.6% 1782.5 96.1% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1297.2 1237.0 104.9% 1396.0 92.9% N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 926.4 920.0 100.7% 1046.8 88.5% N-1: Hemingway-Summer Lake 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1551.8 1550.0 100.1% 1782.5 87.1% N-1: Hill Top 345/230 Xfmr No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: Hot Springs-Taft 500 kV No Violations N-1: Humboldt-Coyote Ck 345 kV No Violations N-1: Huntington-Pinto-Four Corners 345 kV No Violations N-1: Ing500-CusterW 500 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1562.6 1550.0 100.8% 1782.5 87.7% N-1: John Day-Slatt 500 kV No Violations N-1: Kfalls-Meridian 500 kV No Violations N-1: Knight-Wautoma 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1555.7 1550.0 100.4% 1782.5 87.3% N-1: LaGrande-North Powder 230 kV No Violations N-1: Lanes-Marion 500 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations Page 722 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-Sac Tap 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1562.8 1550.0 100.8% 1782.5 87.7% N-1: Malin 500/230 Xfmr No Violations N-1: Malin-Hilltop 230 kV No Violations N-1: Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1650.5 2835.1 2442.0 116.1% 3235.5 87.6% N-1: Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1650.5 2835.1 2199.9 128.9% 3235.5 87.6% N-1: Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALROU21 Branch Amp 1648.1 2826.8 2666.9 106.0% 3999.9 70.7% N-1: Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1642.7 2819.6 2667.0 105.7% 4000.0 70.5% N-1: Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1604.5 2806.5 2699.7 104.0% 3999.9 70.2% N-1: Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1600.8 2796.8 2699.7 103.6% 4000.0 69.9% N-1: Malin-Summer Lake 500 kV No Violations N-1: Maple Vly-Rocky RH 345 kV No Violations N-1: Marion-Pearl 500 kV No Violations N-1: Marion-Santiam 500 kV No Violations N-1: McLouglin-Ostrander 230 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: McNary-Sac Tap-Low Mon 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1564.6 1550.0 100.9% 1782.5 87.8% N-1: Midpoint-Hemingway 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1581.8 1550.0 102.1% 1782.5 88.7% N-1: Midpoint-Humboldt 345 kV No Violations N-1: Midpoint-Townsend 500 kV (MISTI) LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 1001.0 920.0 108.8% 1046.8 95.6% N-1: Midpoint-Townsend 500 kV (MISTI) HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1270.0 1237.0 102.7% 1396.0 91.0% N-1: Midpoint-Townsend 500 kV (MISTI) MIDHEM11 (61988) -> MIDPOINT (60240) CKT 1 at MIDPOINT Branch Amp 1048.1 1802.7 1732.1 104.1% 2338.3 77.1% N-1: Midpoint-Townsend 500 kV (MISTI) PTRSNFUR (62386) % Δ Volts 1.019 0.956 6.18% N-1: Midpoint-Townsend 500 kV (MISTI) PTRSNFLT (62030) % Δ Volts 1.001 0.941 5.99% N-1: Midpoint-Townsend 500 kV (MISTI) AMPS (65025) % Δ Volts 1.007 0.951 5.56% N-1: Midpoint-Townsend 500 kV (MISTI)+PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 998.9 920.0 108.6% 1046.8 95.4% N-1: Midpoint-Townsend 500 kV (MISTI)+PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1099.7 1268.5 1237.0 102.5% 1396.0 90.9% N-1: Midpoint-Townsend 500 kV (MISTI)+PTSN Shunt MIDHEM11 (61988) -> MIDPOINT (60240) CKT 1 at MIDPOINT Branch Amp 1048.1 1797.3 1732.1 103.8% 2338.3 76.9% N-1: Napavine-Paul 500 kV No Violations N-1: Olympia-Paul 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1558.6 1550.0 100.6% 1782.5 87.4% N-1: Paul-Satsop 500 kV No Violations N-1: Pearl-Keeler 500 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.4 350.2 320.0 109.4% 370.0 94.7% N-1: Pearl-Keeler 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 678.3 1176.7 950.0 123.9% 1286.0 91.5% Page 723 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Pearl-Keeler 500 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.4 326.3 320.0 102.0% 370.0 88.2% N-1: Pearl-Keeler 500 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 678.3 1036.3 950.0 109.1% 1286.0 80.6% N-1: Pinto-Four Corner 345 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Raver-Paul 500 kV No Violations N-1: Raver-Tacoma 500 kV No Violations N-1: Red Butte-Harry Allen 345 kV No Violations N-1: Robinson-Harry Allen 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 89.0 172.5 150.0 115.0% 180.0 95.9% N-1: Robinson-Harry Allen 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 300.2 462.5 415.7 111.3% 483.5 95.7% N-1: Robinson-Harry Allen 500 kV CHCGO PK (32224) -> HIGGINS (32232) CKT 1 at CHCGO PK Branch Amp 537.5 694.2 652.7 106.4% 893.6 77.7% N-1: Robinson-Harry Allen 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1809.2 2216.6 2199.9 100.8% 3280.5 67.6% N-1: Robinson-Harry Allen 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 2574.1 2477.9 103.9% 3999.9 64.4% N-1: Rock Ck-Wautoma 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1562.5 1550.0 100.8% 1782.5 87.7% N-1: Round Mtn-Table Mtn 500 kV ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1809.2 3241.2 2199.9 147.3% 3280.5 98.8% N-1: Round Mtn-Table Mtn 500 kV ROUND MT (30005) -> ROUTAB21 (30018) CKT 2 at ROUTAB21 Branch Amp 1809.2 3241.2 2667.0 121.5% 4000.0 81.0% N-1: Round Mtn-Table Mtn 500 kV ROUTAB22 (30019) -> TABLE MT (30015) CKT 2 at ROUTAB22 Branch Amp 1802.1 3230.1 2667.0 121.1% 4000.0 80.8% N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Sickler 500 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Sigurd-Glen Canyon 230 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Slatt-Longhorn 500 kV No Violations N-1: Snok Tap-Snoking 500 kV No Violations N-1: Table Mtn-Tesla 500 kV TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABVAC11 Branch Amp 2142.9 3176.9 2667.0 119.1% 3999.9 79.4% N-1: Table Mtn-Tesla 500 kV TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 3176.9 2477.9 128.2% 3999.9 79.4% N-1: Table Mtn-Tesla 500 kV TABVAC12 (30032) -> VACA-DIX (30030) CKT 1 at VACA-DIX Branch Amp 2118.3 3158.0 2667.0 118.4% 4000.0 79.0% N-1: Table Mtn-Tesla 500 kV VACTES11 (30044) -> TESLA (30040) CKT 1 at VACTES11 Branch Amp 1399.1 2355.5 2230.0 105.6% 3555.9 66.2% N-1: Table Mtn-Vaca Dixon 500 kV DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 717.6 832.0 830.9 100.1% 926.3 89.8% N-1: Table Mtn-Vaca Dixon 500 kV FRUTLDJT (31120) -> FTSWRDJT (31122) CKT 1 at FRUTLDJT Branch Amp 285.4 304.2 303.1 100.4% 339.7 89.6% N-1: Table Mtn-Vaca Dixon 500 kV BRDGVLLE (31110) -> FRUTLDJT (31120) CKT 1 at BRDGVLLE Branch Amp 311.5 331.0 328.1 100.9% 371.4 89.1% N-1: Table Mtn-Vaca Dixon 500 kV E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 277.2 343.4 326.3 105.2% 416.7 82.4% N-1: Table Mtn-Vaca Dixon 500 kV TABLE MT (30015) -> TABTES11 (30041) CKT 1 at TABTES11 Branch Amp 1598.3 2848.7 2667.0 106.8% 3555.9 80.1% N-1: Table Mtn-Vaca Dixon 500 kV TABTES11 (30041) -> TABTES12 (30043) CKT 1 at TABTES11 Branch Amp 1598.3 2848.7 2230.0 127.7% 3999.9 71.2% N-1: Table Mtn-Vaca Dixon 500 kV TABTES12 (30043) -> TESLA (30040) CKT 1 at TESLA Branch Amp 1569.4 2814.9 2667.0 105.5% 4000.0 70.4% N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1612.7 1550.0 104.0% 1782.5 90.5% N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1568.9 1550.0 101.2% 1782.5 88.0% N-2: Ashe-Marion & Slatt-Coyote Tap-Longhorn 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations Page 724 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Ashe-Slatt & McNary-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1577.8 1550.0 101.8% 1782.5 88.5% N-2: Ashe-Slatt & Slatt-Coyote Tap-Longhorn 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1574.7 1550.0 101.6% 1782.5 88.3% N-2: Bell-Taft & Taft-Dworskak 500 kV + RAS No Violations N-2: Bethel-Cedar Sp 500kV & Bethel-Round Butte 230 kV No Violations N-2: Bethel-Cedar Sp 500kV & Bethel-Santiam 230kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1045.9 1009.1 103.7% 1285.2 81.4% N-2: Bethel-Cedar Sp 500kV & Santiam-Mikkalo 500kV ALBANY (40025) -> HAZELWOD (45131) CKT 1 at HAZELWOD Branch Amp 920.4 1033.5 1009.1 102.4% 1285.2 80.4% N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Bridger-Populus #1 & #2 345 kV No Violations N-2: Bridger-Populus #2 & Bridger-3MileKnoll 345 kV No Violations N-2: Broadview-Townsend #1 & #2 500 kV + RAS No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1613.0 1550.0 104.1% 1782.5 90.5% N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1555.8 1550.0 100.4% 1782.5 87.3% N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at LOLO Branch Amp 754.4 920.4 920.0 100.0% 1046.8 87.9% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Chief Jo-Monroe & Chief Jo-Sickler 500 kV No Violations N-2: Chief Jo-Monroe 500 kV & Chief Jo-Snohoms4 345 kV No Violations N-2: Chief Jo-Monroe 500 kV & Monroe-Sammamsh 230 kV No Violations N-2: Chief Jo-Sickler 500 kV & Chief J3-Snohoms3 345 kV No Violations N-2: Coulee-Chief Jo 500 kV & Chief J4-Snohoms4 345 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1576.1 1550.0 101.7% 1782.5 88.4% N-2: Coulee-Schultz #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1568.2 1550.0 101.2% 1782.5 88.0% N-2: CusterW-Ing500 & CusterW-Monroe 500 kV No Violations N-2: CusterW-Monroe #1 & #2 500 kV + RAS No Violations N-2: DC-BIPOLE SCATERGD (26066) -> OLYMPC (26087) CKT 2 at OLYMPC Branch Amp 807.2 908.4 876.1 103.7% 1001.6 90.7% N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1700.7 2861.2 2400.0 119.2% 3199.9 89.4% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1708.4 2875.8 2400.0 119.8% 3800.0 75.7% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1809.2 2363.7 2199.9 107.4% 3280.5 72.1% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1793.9 2343.7 2199.9 106.5% 3280.5 71.4% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1650.5 2256.4 2199.9 102.6% 3235.5 69.7% N-2: DC-BIPOLE TABLE MT (30015) -> TABVAC11 (30031) CKT 1 at TABVAC11 Branch Amp 2142.9 2683.5 2667.0 100.6% 3999.9 67.1% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 2683.5 2477.9 108.3% 3999.9 67.1% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1557.8 2176.7 2134.0 102.0% 3499.9 62.2% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1540.6 2153.0 2134.0 100.9% 3499.9 61.5% N-2: DC-BIPOLE ROBINSON (64895) % Δ Volts 1.095 1.031 5.84% N-2: DC-BIPOLE ROBINSON (64885) % Δ Volts 1.042 0.987 5.28% N-2: Double Palo Verde TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1625.1 1550.0 104.8% 1782.5 91.2% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1700.7 2696.0 2400.0 112.3% 3199.9 84.3% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1708.4 2713.0 2400.0 113.0% 3800.0 71.4% N-2: Double Palo Verde ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1809.2 2230.1 2199.9 101.4% 3280.5 68.0% N-2: Double Palo Verde ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1793.9 2211.3 2199.9 100.5% 3280.5 67.4% N-2: Double Palo Verde TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 2142.9 2553.1 2477.9 103.0% 3999.9 63.8% N-2: Double Palo Verde YORKCANY (12091) % Δ Volts 1.005 0.924 8.06% Page 725 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Double Palo Verde SPRINGER (12077) % Δ Volts 1.006 0.929 7.65% N-2: Double Palo Verde CIMARRON (12148) % Δ Volts 1.007 0.93 7.65% N-2: Double Palo Verde RAINVL_T (12130) % Δ Volts 1.008 0.931 7.64% N-2: Double Palo Verde RAINVL1 (12129) % Δ Volts 1.009 0.932 7.63% N-2: Double Palo Verde ROBINSON (64895) % Δ Volts 1.095 1.015 7.31% N-2: Double Palo Verde MONTROSE (79049) % Δ Volts 0.996 0.928 6.83% N-2: Double Palo Verde ROBINSON (64885) % Δ Volts 1.042 0.973 6.62% N-2: Double Palo Verde PTRSNFUR (62386) % Δ Volts 1.019 0.952 6.58% N-2: Double Palo Verde LOSTCANY (79045) % Δ Volts 0.974 0.911 6.47% N-2: Double Palo Verde PTRSNFLT (62030) % Δ Volts 1.001 0.937 6.39% N-2: Double Palo Verde STORRIE (12079) % Δ Volts 1.019 0.954 6.38% N-2: Double Palo Verde GALLINAT (10484) % Δ Volts 1.02 0.955 6.37% N-2: Double Palo Verde ARRIBA (10016) % Δ Volts 1.019 0.955 6.28% N-2: Double Palo Verde GRANDJCT (79036) % Δ Volts 1.009 0.947 6.14% N-2: Double Palo Verde VALENCIA (10356) % Δ Volts 0.999 0.938 6.11% N-2: Double Palo Verde BACA (10026) % Δ Volts 0.997 0.937 6.02% N-2: Double Palo Verde BULLOCK (79079) % Δ Volts 0.986 0.927 5.98% N-2: Double Palo Verde HAPPYCAN (79082) % Δ Volts 0.987 0.928 5.98% N-2: Double Palo Verde CEDARHIL (60159) % Δ Volts 1.088 1.023 5.97% N-2: Double Palo Verde NORTHMSA (79085) % Δ Volts 0.988 0.929 5.97% N-2: Double Palo Verde SPRCKTAP (79115) % Δ Volts 0.988 0.929 5.97% N-2: Double Palo Verde VALENCIA (10357) % Δ Volts 1.023 0.962 5.96% N-2: Double Palo Verde MONTROSE (79048) % Δ Volts 0.991 0.932 5.95% N-2: Double Palo Verde BLUEDOOR (79073) % Δ Volts 0.983 0.925 5.90% N-2: Double Palo Verde E.CORTEZ (79074) % Δ Volts 0.983 0.925 5.90% N-2: Double Palo Verde LOSTCANY (79044) % Δ Volts 0.984 0.926 5.89% N-2: Double Palo Verde PEACHVLY (72801) % Δ Volts 0.988 0.93 5.87% N-2: Double Palo Verde CORTEZ (79012) % Δ Volts 0.983 0.926 5.80% N-2: Double Palo Verde GRANDJCT (70205) % Δ Volts 1.003 0.945 5.78% N-2: Double Palo Verde EMPIRETS (79075) % Δ Volts 0.986 0.929 5.78% N-2: Double Palo Verde DOUGHSPN (79182) % Δ Volts 0.987 0.93 5.78% N-2: Double Palo Verde GRCUT TP (79180) % Δ Volts 0.987 0.93 5.78% N-2: Double Palo Verde GRT CUT (79179) % Δ Volts 0.987 0.93 5.78% N-2: Double Palo Verde GARNET M (79103) % Δ Volts 0.988 0.931 5.77% N-2: Double Palo Verde STRNELSN (79183) % Δ Volts 0.989 0.932 5.76% N-2: Double Palo Verde CLIFTON (70113) % Δ Volts 1.007 0.949 5.76% N-2: Double Palo Verde TOWAOC (79122) % Δ Volts 0.985 0.929 5.69% N-2: Double Palo Verde GUNVAL (79184) % Δ Volts 0.987 0.931 5.67% N-2: Double Palo Verde GRT CUT (79178) % Δ Volts 0.989 0.933 5.66% N-2: Double Palo Verde AMPS (65025) % Δ Volts 1.007 0.95 5.66% N-2: Double Palo Verde GARNETAP (79104) % Δ Volts 0.991 0.935 5.65% N-2: Double Palo Verde GOODMNPT (72780) % Δ Volts 0.986 0.931 5.58% N-2: Double Palo Verde MAIN CO (79110) % Δ Volts 0.986 0.931 5.58% N-2: Double Palo Verde SANDCANY (79121) % Δ Volts 0.986 0.931 5.58% N-2: Double Palo Verde HOVENWEP (79108) % Δ Volts 0.987 0.932 5.57% Page 726 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Double Palo Verde Y.JACK W (79118) % Δ Volts 0.987 0.932 5.57% N-2: Double Palo Verde MCPHEE (79177) % Δ Volts 1.006 0.95 5.57% N-2: Double Palo Verde GRANDJCT (70214) % Δ Volts 1.009 0.953 5.55% N-2: Double Palo Verde MANCOSTP (79111) % Δ Volts 0.994 0.939 5.53% N-2: Double Palo Verde HORIZON (70233) % Δ Volts 1.018 0.962 5.50% N-2: Double Palo Verde MIDPOINT (60240) % Δ Volts 1.092 1.032 5.49% N-2: Double Palo Verde Y.JACK 2 (79117) % Δ Volts 0.988 0.934 5.47% N-2: Double Palo Verde PLESNTVW (72782) % Δ Volts 0.99 0.936 5.45% N-2: Double Palo Verde ADOBE (70268) % Δ Volts 1.025 0.97 5.37% N-2: Double Palo Verde GRANDJCT (79034) % Δ Volts 0.99 0.937 5.35% N-2: Double Palo Verde CAHONE (79011) % Δ Volts 0.992 0.939 5.34% N-2: Double Palo Verde DOECANYN (72781) % Δ Volts 0.992 0.939 5.34% N-2: Double Palo Verde VINELAND (70454) % Δ Volts 1.014 0.96 5.33% N-2: Double Palo Verde WBK 25 (50742) % Δ Volts 1.016 0.962 5.31% N-2: Double Palo Verde HOTCHKIS (79042) % Δ Volts 1.001 0.948 5.29% N-2: Double Palo Verde MCKENZIX (79193) % Δ Volts 0.991 0.939 5.25% N-2: Double Palo Verde SOCANAL (79192) % Δ Volts 0.992 0.94 5.24% N-2: Double Palo Verde UINTAH (70438) % Δ Volts 1.032 0.978 5.23% N-2: Double Palo Verde UINTAH (70437) % Δ Volts 1.018 0.965 5.21% N-2: Double Palo Verde CAMEO (70076) % Δ Volts 1.019 0.966 5.20% N-2: Double Palo Verde HRD 25 (51210) % Δ Volts 1.022 0.969 5.19% N-2: Double Palo Verde GRANDJCT (79035) % Δ Volts 0.987 0.936 5.17% N-2: Double Palo Verde GLADSTON (12101) % Δ Volts 1.01 0.958 5.15% N-2: Double Palo Verde DEBEQUE (70140) % Δ Volts 0.994 0.943 5.13% N-2: Double Palo Verde JUANITA (79083) % Δ Volts 0.994 0.943 5.13% N-2: Double Palo Verde BLACKLAK (12011) % Δ Volts 1.018 0.966 5.11% N-2: Double Palo Verde DILLON S (62084) % Δ Volts 1.006 0.955 5.07% N-2: Double Palo Verde CAMEO (70078) % Δ Volts 1.017 0.966 5.01% N-2: Echolake-Maple Vly 500 kV & Covington-Maple Vly 230 kV No Violations N-2: Echolake-Maple Vly 500 kV & Rocky RH-Maple Vly 345 kV No Violations N-2: Garrison-Taft #1 & #2 500 kV + RAS No Violations N-2: Grassland-Cedar Sp 500kV & Slatt-Buckley 500kV No Violations N-2: Grassland-Coyote 500kV & Slatt-Longhorn 500kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1582.7 1550.0 102.1% 1782.5 88.8% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1708.4 3310.8 2400.0 137.9% 3800.0 87.1% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1379.2 3165.0 2700.0 117.2% 4000.0 79.1% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1597.3 3136.2 2400.0 130.7% 3800.0 82.5% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1583.2 3122.8 2400.0 130.1% 3800.0 82.2% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1597.3 3103.0 2400.0 129.3% 3800.0 81.7% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1583.2 3092.8 2400.0 128.9% 3800.0 81.4% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1567.8 1550.0 101.2% 1782.5 88.0% N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 1835.8 3129.1 2900.0 107.9% 4350.0 71.9% Page 727 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 1840.0 3488.1 3000.0 116.3% 4050.0 86.1% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1562.4 1550.0 100.8% 1782.5 87.7% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.4 346.7 320.0 108.4% 370.0 93.7% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 678.3 1176.9 950.0 123.9% 1286.0 91.5% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CLATSOP (40243) -> LWSCLARK (45314) CKT 1 at CLATSOP Branch MVA 80.1 96.8 94.0 103.0% 139.0 69.6% N-2: Keeler-Pearl 500 & Sherwood-Carlton 230 kV CARLTON (40181) % Δ Volts 1.026 0.972 5.26% N-2: Knight-Ostrander & Ostrander-Big Eddy 500 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1609.3 1550.0 103.8% 1782.5 90.3% N-2: Malin-Round Mtn #1 & #2 500 kV CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 89.0 160.2 150.0 106.8% 180.0 89.0% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1833.8 3694.7 2667.4 138.5% 4099.2 90.1% N-2: Malin-Round Mtn #1 & #2 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI11 Branch Amp 1798.2 3587.0 2667.4 134.5% 4099.2 87.5% N-2: Malin-Round Mtn #1 & #2 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1798.2 3587.0 2667.4 134.5% 4099.2 87.5% N-2: Malin-Round Mtn #1 & #2 500 kV DRUM (32218) -> DTCH FL1 (32220) CKT 1 at DRUM Branch Amp 300.2 417.7 415.7 100.5% 483.5 86.4% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 2048.6 3247.2 2993.0 108.5% 4514.9 71.9% N-2: Malin-Round Mtn #1 & #2 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 2048.6 3247.2 2993.0 108.5% 4514.9 71.9% N-2: Malin-Round Mtn #1 & #2 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 2021.6 3217.4 2993.0 107.5% 4514.9 71.3% N-2: Malin-Round Mtn #1 & #2 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at MAXWELL Branch Amp 2021.6 3217.4 2993.0 107.5% 4514.9 71.3% N-2: Malin-Round Mtn #1 & #2 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 2000.7 3181.4 2993.0 106.3% 4514.9 70.5% N-2: McNary-John Day & Rock Creek-John Day 500 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1579.0 1550.0 101.9% 1782.5 88.6% N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1582.7 1550.0 102.1% 1782.5 88.8% N-2: Monroe-CusterW & Chief Jo-Monroe 500 kV No Violations N-2: Napavine-Allston & Paul-Allston #2 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1554.2 1550.0 100.3% 1782.5 87.2% N-2: Paul-Napavine & Paul-Allston #2 500 kV + RAS TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1554.4 1550.0 100.3% 1782.5 87.2% N-2: Paul-Raver & Raver-Covingt4 500 kV No Violations N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS HORIZN (43740) -> SUNSETPG (43739) CKT 1 at SUNSETPG Branch MVA 270.4 328.2 320.0 102.6% 370.0 88.7% N-2: Pearl-Keeler 500 kV & Pearl-Sherwood 230 kV + RAS KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 678.3 1041.7 950.0 109.6% 1286.0 81.0% N-2: Pearl-Ostrander 500 kV & Big Eddy-McLougln 230 kV No Violations N-2: Pearl-Ostrander 500 kV & Ostrander-McLougln 230 kV No Violations N-2: Raver-Covington #1 & #2 500 kV No Violations N-2: Raver-Echo Lake & Raver-Schultz 500 kV No Violations N-2: Raver-Paul & Napavine-Paul 500 kV No Violations N-2: Raver-Paul 500 kV & Coulee-Olympia 300 kV No Violations N-2: Raver-Paul 500 kV & Tacoma A-Chehalis 230 kV No Violations N-2: Raver-Schultz #1 & #2 500 kV No Violations N-2: Raver-Tacoma & Raver-Covingt4 500 kV No Violations N-2: Raver-Tacoma 500 kV & Tacoma-Christop-Covington 230 kV No Violations N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAL SUB (64025) -> CAL S PS (64023) CKT 1 at CAL S PS Branch MVA 89.0 167.5 150.0 111.7% 180.0 93.1% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 717.6 933.5 830.9 112.3% 926.3 100.8% Page 728 of 776 Appendix M - 16hs2a_2250idnw_ms_swips Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS FRUTLDJT (31120) -> FTSWRDJT (31122) CKT 1 at FRUTLDJT Branch Amp 285.4 322.6 303.1 106.4% 339.7 95.0% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS BRDGVLLE (31110) -> FRUTLDJT (31120) CKT 1 at BRDGVLLE Branch Amp 311.5 349.9 328.1 106.6% 371.4 94.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS FTSWRDJT (31122) -> GRBRVLLE (31116) CKT 1 at FTSWRDJT Branch Amp 279.4 316.5 303.1 104.4% 339.7 93.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1833.8 3416.9 2667.4 128.1% 4099.2 83.4% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1798.2 3327.6 2667.4 124.8% 4099.2 81.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPTJACK Branch Amp 1798.2 3311.2 2667.4 124.1% 4099.2 80.8% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 2048.6 3532.6 2993.0 118.0% 4514.9 78.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 2048.6 3532.6 2993.0 118.0% 4514.9 78.2% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 2021.6 3516.1 2993.0 117.5% 4514.9 77.9% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at MAXWELL Branch Amp 2021.6 3516.1 2993.0 117.5% 4514.9 77.9% N-2: Round Mtn-Table Mtn #1 & #2 500 kV + RAS MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 2000.7 3484.5 2993.0 116.4% 4514.9 77.2% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV DELEVN (30114) -> CORTINA (30450) CKT 1 at CORTINA Branch Amp 717.6 949.2 830.9 114.2% 926.3 102.5% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV FRUTLDJT (31120) -> FTSWRDJT (31122) CKT 1 at FRUTLDJT Branch Amp 285.4 324.8 303.1 107.2% 339.7 95.6% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV BRDGVLLE (31110) -> FRUTLDJT (31120) CKT 1 at BRDGVLLE Branch Amp 311.5 352.1 328.1 107.3% 371.4 94.8% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV FTSWRDJT (31122) -> GRBRVLLE (31116) CKT 1 at FTSWRDJT Branch Amp 279.4 318.7 303.1 105.1% 339.7 93.8% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV PEASE (32200) -> E.MRY J1 (32288) CKT 1 at PEASE Branch Amp 391.1 459.4 441.8 104.0% 507.1 90.6% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV ROUND MT (30245) -> COTWD_E (30105) CKT 3 at COTWD_E Branch Amp 292.7 663.7 635.1 104.5% 745.5 89.0% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 277.2 364.1 326.3 111.6% 416.7 87.4% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OLIMAX11 (30026) -> OLIMAX12 (30027) CKT 1 at OLIMAX11 Branch Amp 2048.6 3282.8 2993.0 109.7% 4514.9 72.7% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OLINDA (30020) -> OLIMAX11 (30026) CKT 1 at OLIMAX11 Branch Amp 2048.6 3282.8 2993.0 109.7% 4514.9 72.7% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MAXWELL (30025) -> MAXTRA11 (30036) CKT 1 at MAXWELL Branch Amp 2021.6 3263.6 2993.0 109.0% 4514.9 72.3% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV OLIMAX12 (30027) -> MAXWELL (30025) CKT 1 at MAXWELL Branch Amp 2021.6 3263.6 2993.0 109.0% 4514.9 72.3% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CAPOLI12 (90134) -> OLINDA (30020) CKT 1 at OLINDA Branch Amp 1833.8 2954.3 2667.4 110.8% 4099.2 72.1% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV MAXTRA11 (30036) -> TRACY (30035) CKT 1 at TRACY Branch Amp 2000.7 3233.0 2993.0 108.0% 4514.9 71.6% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CAPOLI11 (90133) -> CAPOLI12 (90134) CKT 1 at CAPOLI12 Branch Amp 1798.2 2870.5 2667.4 107.6% 4099.2 70.0% N-2: Table Mtn-Tesla & Table Mtn-Vaca Dixon 500 kV CAPTJACK (45035) -> CAPOLI11 (90133) CKT 1 at CAPOLI11 Branch Amp 1798.2 2868.7 2667.4 107.5% 4099.2 70.0% N-2: Taft-Bell 500 kV & Bell-Lancaster 230 kV No Violations N-2: Taft-Bell 500kV & Bell-Boundary #3 230kV No Violations N-2: Taft-Bell 500kV & Bell-Lancaster 230kV No Violations N-2: Taft-Bell 500kV & Bell-Trentwood #2 115kV No Violations N-2: Taft-Bell 500kV & Lancaster-Noxon 230kV No Violations N-2: Taft-Dworshak & Garrison-Taft #1 500kV No Violations N-2: Townsend-Garrison #1 & #2 500 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1569.9 1550.0 101.3% 1782.5 88.1% N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV TOWNSEND (62500) -> TWNSNDPS (62503) CKT 1 at TOWNSEND Branch MVA 1517.7 1569.9 1550.0 101.3% 1782.5 88.1% N-3: Schultz-Raver #1 & #2 & #3 500 kV No Violations Page 729 of 776 Appendix N Idaho-Northwest v West of McNary & West of Slatt Studies Page 730 of 776 N1.0 Simultaneous Interaction Study: Idaho-Northwest (W-E) v West of McNary, Grassland Terminus Figure N1: Idaho-Northwest 2250 MW west-to-east, West of McNary 4500 MW, Grassland Terminus 1.07 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.08 puHEMINWAY 231.7 Mvar 1.09 puPONDROSA 0.0 Mvar 1 5 7 7 M W - 1 4 7 M v a r 1 4 6 6 M W - 1 7 9 M v a r 1 6 8 7 M W - 2 5 0 M v a r 1570 MW -194 Mvar 286 MW 57 Mvar 250 MW 55 Mvar 257 MW 18 Mvar 1.04 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.06 puMCNARY 1.08 puSLATT 351.2 Mvar 1.07 puSACJWA T 1.04 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 pu GRASSLND175.0 Mvar 1.07 pu 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD449.0 Mvar 1.08 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.02 puN POWDER 1.03 puTALBOT QUARTZTP 1.03 puWALA AVA 1.02 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.04 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.09 puMIDPOINT 239.4 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.03 puMIDPOINT 0.0 Mvar 185.8 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.00 puIDAHO-NV 1.03 puKINPORT 186.9 Mvar 0.00 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 2 9 8 M W - 5 0 M v a r 1 6 9 6 M W - 1 1 0 M v a r 1729 MW -115 Mvar 1733 MW -118 Mvar 386 MW -20 Mvar 740 MW 5 Mvar 1242 MW -38 Mvar 0 MW 0 Mvar 4 9 8 M W 1 5 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1223 MW 207 Mvar 213 MW 29 Mvar 206 MW 25 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 596 MW 25 Mvar 595 MW 24 Mvar 49 MW 60 Mvar 43 MW 50 Mvar 242 MW -33 Mvar 0 MW 0 Mvar 44 MW 49 Mvar 377 MW 22 Mvar 737 MW -214 Mvar 95 MW -44 Mvar 54 MW -35 Mvar 43 MW -38 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 996 MW -257 Mvar 1523 MW -289 Mvar 261 MW -28 Mvar 185 MW -92 Mvar 212 MW -56 Mvar 187 MW -3 Mvar 19 MW -2 Mvar 3 2 0 M W 3 9 M v a r 30 MW 15 Mvar 207 MW -12 Mvar 141 MW -74 Mvar 118 MW -46 Mvar 134 MW -42 Mvar 135 MW -46 Mvar 4 7 6 M W - 6 M v a r HORSEFLT 1.01 puBOISEBCH 95.4 Mvar 0.0 Mvar 1.02 puONTARIO 19 MW -2 Mvar 70 MW 15 Mvar 295 MW 69 Mvar 3 1 7 M W - 2 4 M v a r 107 MW -25 Mvar 370 MW -53 Mvar 297 MW -18 Mvar 297 MW -18 Mvar 306 MW -23 Mvar 309 MW -43 Mvar 207 MW -54 Mvar 267 MW -66 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1540 MW -90 Mvar 226 MW 192 Mvar 896 MW -84 Mvar 1464 MW -52 Mvar 985 MW -47 Mvar 916 MW -52 Mvar 731 MW -8 Mvar 493 MW -10 Mvar 484 MW -9 Mvar 682 MW -26 Mvar 698 MW -28 Mvar 452 MW -4 Mvar 3 6 5 M W 1 2 9 M v a r 1179 MW -103 Mvar 1 4 7 4 M W - 2 M v a r 1 4 4 1 M W 2 6 M v a r 1 3 0 5 M W 1 8 M v a r 1307 MW -98 Mvar ID-NW = -2250 MW Grassland = -1318 MW Summer Lake = -257 MW Lolo = -317 MW Walla Walla = -188 MW LaGrande = -185 MW Midpoint West = -1480 MW Borah West = -37 MW Idaho-Sierra = 498 MW N of John Day = 7843 MW COI = 4786 MW PDCI = 3101 MW ID-MT = -310 MW W of McNary = 4502 MW W of Slatt = 4419 MW Alturas Project = 4 MW Path C = -1267 MW Montana Southeast = 558 MW TOT 2B1 = 86 MW TOT 2C = 250 MW 258 MW -128 Mvar 283 MW 82 Mvar 1294 MW 21 Mvar 1191 MW 39 Mvar 0 M W 0 M v a r 1 0 3 3 M W - 1 0 8 M v a r 1 3 1 8 M W 7 9 M v a r 1269 MW -281 Mvar COYOTE 1371 MW -167 Mvar 1894 MW -393 Mvar Page 731 of 776 N1.1 Background & Need for Simultaneous Interaction Study The Hemingway-Boardman Phase II study review group requested that the impacts of the Hemingway to Boardman project be evaluated with the West of McNary path at its 4500 MW east-to-west rating simultaneous with Idaho-Northwest at 2250 MW west-to-east. The study group also requested that the study be performed leaving out other planned projects such as Stage One of Gateway West, and the Cascade Crossings Transmission Project. The West of McNary path is made up of the following lines: (1) Coyote-Slatt 500 kV, (2) McNary-John Day 500 kV, (3) McNary-Ross 345 kV, (4) Jones Canyon-Tumble Creek 230 kV and (5) Harvalum-Big Eddy 230 kV. N1.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_2250idnw_4500wom. Step-by-step development of the 16hs2a_2250idnw_4500wom base case: Step 1: Begin with the 16hs2a_2250idnw_solo base case. Utilize the base case developed in Section 4.10.2 Steady State Case Stressing. This case does not include Stage One of Gateway West or the Cascade Crossings Transmission Project. Step 2: Stress the West of McNary path. Generation east of McNary was increased to stress the West of McNary path to 4,500 MW. The path flows were increased by modifying generation in the Pacific Northwest, mostly in Southeast Washington, and the Lower Columbia Basin. The generation increase east of McNary cooresponds with a reduction in generation west of McNary at places such as John Day, The Dalles, and Bonneville. Step 3: Re-stress Idaho-Northwest The Idaho-Northwest path was re-stressed to 2250 MW in the west-to-east direction by reducing PacifiCorp East (PACE) and Idaho Power generation and replacing the generation with a schedule from the Northwest. No other paths were significantly altered. Page 732 of 776 N1.3 Post Transient Results Post-transient contingency results for the 16hs2a_2250idnw_4500wom case can be found at the end of this section. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Hemingway-Grassland 500 kV & Hem 500/230 Xfmr This is the limiting contingency for the Idaho-Northwest path in the west-to-east direction. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 110% of its 1237 Amp nominal rating (97.3% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N1.1: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 110% (1237 Amp Rating) 97.3% (1396 Amp Rating) Oxbow – Lolo 230 kV 112% (920 Amp SOL) 98.7% (1047 Amp Rating) A breaker failure at Hemingway significantly stresses the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines. Section 2.4 considers different Hemingway 500 kV substation configurations to avoid severe breaker failures, however, at this time this breaker failure is considered to be credible. In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #2 – Hemingway-Grassland 500 kV + PTSN Shunt This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 109% of its 1237 Amp nominal rating (96.1% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N1.2: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 109% (1237 Amp Rating) 97.3% (1396 Amp Rating) Oxbow – Lolo 230 kV 112% (920 Amp SOL) 98.7% (1047 Amp Rating) In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Page 733 of 776 Conclusion Two of the notable post transient contingencies resulting in more severe system stressing were noted above. These contingencies, as well as all other post-transient contingencies, result in acceptable performance. Ultimately, the results indicate that Idaho-Northwest can achieve a 2250 MW west-to- east rating simultaneous with West of McNary at 4500 MW. Page 734 of 776 Appendix N1 - 16hs2a_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1690.3 2924.8 2199.7 133.0% 3235.5 90.4% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1690.3 2924.8 2199.7 133.0% 3235.5 90.4% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1688.3 2917.0 2666.9 109.4% 3999.9 72.9% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1681.6 2907.9 2667.0 109.0% 4000.0 72.7% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1643.6 2815.5 2229.7 126.3% 3514.0 80.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1643.6 2815.5 2699.7 104.3% 3999.9 70.4% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1638.4 2806.8 2699.7 104.0% 4000.0 70.2% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1238.2 1237.0 100.1% 1396.0 88.7% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr KINGEN (47332) % Δ Volts 1.017 0.966 -5.01% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr KINGEN T (40608) % Δ Volts 1.016 0.965 -5.02% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr LAGRAND2 (40620) % Δ Volts 1.008 0.957 -5.06% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40621) % Δ Volts 1.004 0.953 -5.08% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr BOARD T2 (40123) % Δ Volts 1.035 0.981 -5.22% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40905) % Δ Volts 1.001 0.945 -5.59% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr LAGRANDE (40619) % Δ Volts 0.952 0.898 -5.67% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr DR W TP (45162) % Δ Volts 1.030 0.970 -5.83% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr DR E TP (45160) % Δ Volts 1.030 0.970 -5.83% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr DALREED (45075) % Δ Volts 1.030 0.970 -5.83% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr ROUNDUP2 (41253) % Δ Volts 0.984 0.925 -6.00% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr JONESCYN (47814) % Δ Volts 1.032 0.969 -6.10% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr MCKAY (45322) % Δ Volts 0.979 0.919 -6.13% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr ROUNDUP (40903) % Δ Volts 0.984 0.923 -6.20% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr PENDLT T (41248) % Δ Volts 0.974 0.913 -6.26% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr PENDLBPA (41247) % Δ Volts 0.974 0.913 -6.26% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr BUCKAROO (45027) % Δ Volts 0.972 0.911 -6.28% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr PENDLTON (45235) % Δ Volts 0.971 0.910 -6.28% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr MISSIONT (47191) % Δ Volts 0.970 0.908 -6.39% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr ATHENA (45015) % Δ Volts 0.960 0.898 -6.46% BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr PILOT RK (45413) % Δ Volts 0.960 0.897 -6.56% BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations Page 735 of 776 Appendix N1 - 16hs2a_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1259.5 1237.0 101.8% 1396.0 90.2% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 924.5 920.0 100.5% 1046.8 88.3% BF 5006 Slatt-Grassland 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1254.1 1237.0 101.4% 1396.0 89.8% BF 5015 Ashe-Slatt 500 kV & Slatt 500 kV Caps No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1240.5 1237.0 100.3% 1396.0 88.9% BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5043 Coyote-Slatt & Slatt 500 kV Caps HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1238.6 1237.0 100.1% 1396.0 88.7% BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5211 Low Mon-McNary & McNary-John Day 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV & Slatt 500 kV Caps No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 1033.1 920.0 112.3% 1046.8 98.7% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1358.8 1237.0 109.8% 1396.0 97.3% BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr IMNAHA (60278) % Δ Volts 0.982 0.926 -5.70% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1242.4 1237.0 100.4% 1396.0 89.0% BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1252.5 1237.0 101.2% 1396.0 89.7% BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 No Violations BF McNary 230 kV SECT 3 No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 986.4 920.0 107.2% 1046.8 94.2% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1307.2 1237.0 105.7% 1396.0 93.6% BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen HEMBOA11 (61953) % Δ Volts 1.102 1.021 -7.35% Bus: Buckley 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations Page 736 of 776 Appendix N1 - 16hs2a_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Brownlee-Ontario 230 kV QUARTZ (60305) -> NELSN TP (61055) CKT 1 at QUARTZ Branch Amp 227.8 409.7 400.0 102.4% 491.2 83.4% N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Coyote-Slatt 500 kV No Violations N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Grassland-Slatt 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1254.1 1237.0 101.4% 1396.0 89.8% N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 997.0 920.0 108.4% 1046.8 95.2% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1689.9 2890.4 2400.0 120.4% 3199.9 90.3% N-1: Hemingway-Grassland 500 kV + FACRI HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1253.9 1237.0 101.4% 1396.0 89.8% N-1: Hemingway-Grassland 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1698.2 2908.6 2400.0 121.2% 3800.0 76.5% N-1: Hemingway-Grassland 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 1006.1 920.0 109.4% 1046.8 96.1% N-1: Hemingway-Grassland 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1332.5 1237.0 107.7% 1396.0 95.5% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations Page 737 of 776 Appendix N1 - 16hs2a_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Low Mon-McNary 500 kV No Violations N-1: Malin-Summer Lake 500 kV No Violations N-1: McNary 500/230 kV Xfmr JONESCYN (47814) % Δ Volts 1.032 0.978 -5.23% N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-Calpine PH No Violations N-1: McNary-Coyote 500 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1266.1 1237.0 102.4% 1396.0 90.7% N-1: Midpoint-Hemingway 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1252.7 1237.0 101.3% 1396.0 89.7% N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1270.1 1237.0 102.7% 1396.0 91.0% N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Roundup-Lagrande 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1248.5 1237.0 100.9% 1396.0 89.4% N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 948.5 920.0 103.1% 1046.8 90.6% N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Coyote-Slatt 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1256.4 1237.0 101.6% 1396.0 90.0% N-2: Ashe-Marion & Coyote-Slatt 500 kV JONTMB11 (90164) % Δ Volts 1.003 0.948 -5.48% N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & Coyote-Slatt 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1307.0 1237.0 105.7% 1396.0 93.6% N-2: Ashe-Slatt & Coyote-Slatt 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 977.3 920.0 106.2% 1046.8 93.4% N-2: Ashe-Slatt & Coyote-Slatt 500 kV PTRSNFUR (62386) % Δ Volts 1.021 0.970 -5.00% N-2: Ashe-Slatt & Coyote-Slatt 500 kV ASHMAR22 (90007) % Δ Volts 1.089 1.034 -5.05% N-2: Ashe-Slatt & Coyote-Slatt 500 kV JONTMB11 (90164) % Δ Volts 1.003 0.943 -5.98% N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations Page 738 of 776 Appendix N1 - 16hs2a_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 812.1 972.4 920.0 105.7% 1046.8 92.9% N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1689.9 2661.8 2400.0 110.9% 3199.9 83.2% N-2: DC-BIPOLE E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 295.5 331.5 326.3 101.6% 416.7 79.5% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1807.8 2362.4 2199.9 107.4% 3280.5 72.0% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1792.5 2342.4 2199.9 106.5% 3280.5 71.4% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1690.3 2292.1 2199.7 104.2% 3235.5 70.8% N-2: DC-BIPOLE MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1690.3 2292.1 2199.7 104.2% 3235.5 70.8% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1698.2 2677.7 2400.0 111.6% 3800.0 70.5% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1616.8 2303.3 2134.0 107.9% 3499.9 65.8% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDVIN11 Branch Amp 1595.1 2269.5 2134.0 106.3% 3499.9 64.8% N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at VINCENT Branch Amp 1573.4 2240.8 2134.0 105.0% 3499.9 64.0% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1936.3 2494.7 2477.9 100.7% 3999.9 62.4% N-2: DC-BIPOLE YORKCANY (12091) % Δ Volts 1.0 1.0 -5.2% N-2: Double Palo Verde PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM14 Branch Amp 1689.9 2438.8 2400.0 101.6% 3199.9 76.2% N-2: Double Palo Verde PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1698.2 2460.2 2400.0 102.5% 3800.0 64.7% N-2: Double Palo Verde MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1616.8 2158.8 2134.0 101.2% 3499.9 61.7% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1698.2 3107.2 2400.0 129.5% 3800.0 81.8% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1393.2 2987.2 2700.0 110.6% 4000.0 74.7% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1597.0 2942.7 2400.0 122.6% 3800.0 77.4% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1581.9 2927.3 2400.0 122.0% 3800.0 77.0% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1597.0 2966.2 2400.0 123.6% 3800.0 78.1% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1581.9 2955.2 2400.0 123.1% 3800.0 77.8% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1813.7 3038.7 2900.0 104.8% 4350.0 69.9% N-2: John Day-Grizzly #1 & #2 500 kV + RAS No Violations N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 1840.8 3366.1 3000.0 112.2% 4050.0 83.1% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 + RAS No Violations N-2: McNary-John Day & Rock Creek-John Day 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1241.2 1237.0 100.3% 1396.0 88.9% N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV MCNRY S1 (41351) -> MCNARY (40723) CKT 1 at MCNARY Branch MVA 1052.5 1480.4 1368.0 108.2% 1644.0 90.0% N-2: Midpoint-Hemingway 500 kV & Midpoint-King 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1159.7 1258.0 1237.0 101.7% 1396.0 90.1% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations Page 739 of 776 N2.0 Simultaneous Interaction Study: Idaho-Northwest (W-E) v West of McNary, Longhorn Terminus, Longhorn Generation Figure N2: Idaho-Northwest 2250 MW west-to-east, West of McNary 4500 MW, Longhorn Terminus, High Longhorn Gen 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 226.3 Mvar 1.09 puPONDROSA 0.0 Mvar 1 5 4 5 M W - 1 4 9 M v a r 1 4 3 4 M W - 1 8 1 M v a r 1 5 7 4 M W - 2 2 2 M v a r 1443 MW -155 Mvar 257 MW 67 Mvar 224 MW 62 Mvar 65 MW 99 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.06 puMCNARY 1.08 puSLATT 351.6 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.03 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 puGRASSLND 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 42.6 Mvar 1.09 puHANFORD448.7 Mvar 1.08 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.03 puWALAWALA 85.1 Mvar 1.02 puN POWDER 1.04 puTALBOT QUARTZTP 1.04 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 233.9 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.0 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.5 Mvar 0.00 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 3 3 7 M W - 6 1 M v a r 1 8 0 6 M W - 9 0 M v a r 1623 MW -132 Mvar 1628 MW -135 Mvar 456 MW -21 Mvar 0 MW -40 Mvar 1283 MW -92 Mvar 0 MW 0 Mvar 5 0 7 M W 1 2 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1262 MW 144 Mvar 225 MW 14 Mvar 219 MW 9 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 591 MW 28 Mvar 590 MW 26 Mvar 34 MW 71 Mvar 29 MW 60 Mvar 233 MW -40 Mvar 0 MW 0 Mvar 47 MW 45 Mvar 374 MW 24 Mvar 734 MW -211 Mvar 104 MW -54 Mvar 66 MW -49 Mvar 57 MW -53 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 1026 MW -287 Mvar 1633 MW -340 Mvar 242 MW -29 Mvar 167 MW -87 Mvar 195 MW -58 Mvar 183 MW -11 Mvar 24 MW 9 Mvar 3 0 0 M W 3 2 M v a r 29 MW -6 Mvar 190 MW -8 Mvar 142 MW -44 Mvar 120 MW -17 Mvar 136 MW -12 Mvar 135 MW -16 Mvar 4 6 0 M W - 9 M v a r HORSEFLT 1.01 puBOISEBCH 95.1 Mvar 0.0 Mvar 1.02 puONTARIO 24 MW 9 Mvar 66 MW 16 Mvar 276 MW 49 Mvar 2 9 5 M W - 2 5 M v a r 90 MW -23 Mvar 375 MW -53 Mvar 300 MW -16 Mvar 300 MW -16 Mvar 309 MW -21 Mvar 312 MW -41 Mvar 198 MW -52 Mvar 255 MW -65 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1652 MW -83 Mvar 108 MW 183 Mvar 946 MW -88 Mvar 1493 MW -51 Mvar 989 MW -48 Mvar 919 MW -52 Mvar 734 MW -8 Mvar 496 MW -10 Mvar 487 MW -9 Mvar 687 MW -26 Mvar 703 MW -28 Mvar 461 MW 25 Mvar 3 4 3 M W 8 9 M v a r 1519 MW -140 Mvar 1 4 4 4 M W - 2 M v a r 1 4 1 0 M W 2 6 M v a r 1 3 7 3 M W 9 M v a r 1375 MW -116 Mvar ID-NW = -2251 MW Longhorn = -1570 MW Summer Lake = -65 MW Lolo = -295 MW Walla Walla = -172 MW LaGrande = -167 MW Midpoint West = -1534 MW Borah West = -68 MW Idaho-Sierra = 507 MW N of John Day = 7787 MW COI = 4748 MW PDCI = 3101 MW ID-MT = -310 MW W of McNary = 4501 MW W of Slatt = 4984 MW Alturas Project = 4 MW Path C = -1300 MW Montana Southeast = 543 MW TOT 2B1 = 96 MW TOT 2C = 259 MW 65 MW -63 Mvar 284 MW 52 Mvar 1226 MW 52 Mvar 1122 MW 65 Mvar 0 M W 0 M v a r 1 0 4 7 M W - 1 0 1 M v a r 1 5 7 0 M W 2 7 3 M v a r 1582 MW -163 Mvar 1718 MW -302 Mvar 1180 MW -271 Mvar Page 740 of 776 N2.1 Background & Need for Simultaneous Interaction Study The Hemingway-Boardman Phase II study review group requested that the impacts of the Hemingway to Boardman project be evaluated with the West of McNary path at its 4500 MW east-to-west rating simultaneous with Idaho-Northwest at 2250 MW west-to-east. The study group also requested that the study be performed leaving out other planned projects such as Stage One of Gateway West, and the Cascade Crossings Transmission Project. Given the uncertainty of the northwest terminus of the Hemingway-Boardman project, this section looks at a Longhorn terminus option. Due to the location of Longhorn, just east of the West of McNary cut plane, generation east of the cutplane had to increase substantially compared to the Grassland terminus alternative studied in Section N1. This section models Longhorn generation is at its maximum in order to restress the West of McNary path. The following section, Section N3, models Stanfield (McNary 500 kV) generation at its maximum. Terminating the Hemingway-Boardman 500 kV transmission project at Longhorn is assumed not to affect the definition of the West of McNary path. This may change in the future. The West of McNary path is made up of the following lines: (1) Coyote-Slatt 500 kV, (2) McNary-John Day 500 kV, (3) McNary- Ross 345 kV, (4) Jones Canyon-Tumble Creek 230 kV and (5) Harvalum-Big Eddy 230 kV. N2.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_lh_2250idnw_4500wom. Step-by-step development of the 16hs2a_lh_2250idnw_4500wom base case: Step 1: Begin with the 16hs2a_2250idnw_4500wom base case. Utilize the base case developed in Section N1.2 Steady State Case Stressing. Shift the terminus of the Hemingway-Boardman transmission project from Grassland to Longhorn. Step 2: Stress the West of McNary path. Over 1500 MW of generation drops off at Longhorn, toward Hemingway, in this configuration, and does not reach the West of McNary cutplane. In the Grassland terminus option, this flow would have crossed the West of McNary cutplane before sinking toward Hemingway. To make up for this reduction in flow across West of McNary, wind generation at Longhorn was stressed Page 741 of 776 to maximum levels (1214 MW), and generation at Stanfield (McNary 500 kV) was also ramped up to 362 MW. Combining Longhorn & Stanfield, this is 1576 MW of additional generation east of the cutplane when compared to the Section N1 base case. The generation increase at Longhorn & Stanfield cooresponds with a reduction in generation west of McNary at places such as John Day, The Dalles, Bonneville and Boardman. Perhaps in the future, West of McNary would be redefined if the Hemingway-Boardman transmission project terminates at Longhorn. Step 3: Re-stress Idaho-Northwest The Idaho-Northwest path was re-stressed to 2250 MW in the west-to-east direction by reducing PacifiCorp East (PACE) and Idaho Power generation and replacing the generation with a schedule from the Northwest. No other paths were significantly altered. N2.3 Post Transient Results Post-transient contingency results for the 16hs2a_lh_2250idnw_4500wom case can be found at the end of this section. Details for the severe/notable contingencies can be found below. Severe Post-Transient Contingency #1 – BF IPC Hemingway-Longhorn 500 kV & Hem 500/230 Xfmr This is the limiting contingency for the Idaho-Northwest path in the west-to-east direction. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 111% of its 1237 Amp nominal rating (98.4% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N2.1: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 111% (1237 Amp Rating) 98.4% (1396 Amp Rating) Oxbow – Lolo 230 kV 111% (920 Amp SOL) 97.3% (1047 Amp Rating) A breaker failure at Hemingway significantly stresses the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines. Section 2.4 considers different Hemingway 500 kV substation configurations to avoid severe breaker failures, however, at this time this breaker failure is considered to be credible. In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #2 – Hemingway-Longhorn 500 kV + PTSN Shunt This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 110% of its 1237 Amp nominal rating (97.1% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Page 742 of 776 Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N2.2: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 110% (1237 Amp Rating) 97.1% (1396 Amp Rating) Oxbow – Lolo 230 kV 109% (920 Amp SOL) 95.6% (1047 Amp Rating) In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #3 – BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 107% of its 1237 Amp nominal rating (95.0% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N2.3: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 107% (1237 Amp Rating) 95.0% (1396 Amp Rating) Oxbow – Lolo 230 kV 106% (920 Amp SOL) 93.5% (1047 Amp Rating) In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Conclusion Three of the notable post transient contingencies resulting in more severe system stressing were noted above. These contingencies, as well as all other post-transient contingencies, result in acceptable performance. Ultimately, the results indicate that Idaho-Northwest can achieve a 2250 MW west-to- east rating simultaneous with West of McNary at 4500 MW even if the Hemingway-Boardman 500 kV transmission project has a Longhorn northwest terminus. Page 743 of 776 Appendix N2 - 16hs2a_lh_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1676.0 2901.0 2199.7 131.9% 3235.5 89.7% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1676.0 2901.0 2199.7 131.9% 3235.5 89.7% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALIN Branch Amp 1674.0 2893.4 2666.9 108.5% 3999.9 72.3% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1667.4 2884.1 2667.0 108.1% 4000.0 72.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1629.7 2793.5 2229.7 125.3% 3514.0 79.5% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1629.7 2793.5 2699.7 103.5% 3999.9 69.8% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1624.6 2784.7 2699.7 103.1% 4000.0 69.6% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr RATSN C1 (47891) % Δ Volts 1.030 0.978 -5.05% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr WHT F C1 (47896) % Δ Volts 1.030 0.978 -5.05% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LJ2 C1 (47807) % Δ Volts 1.034 0.980 -5.22% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LEANJ C1 (44886) % Δ Volts 1.036 0.978 -5.60% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LJ2 C2 (47811) % Δ Volts 1.043 0.977 -6.33% BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV MCNRY S1 (41351) -> MCNARY (40723) CKT 1 at MCNARY Branch MVA 1093.0 1376.1 1368.0 100.6% 1644.0 83.7% BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps No Violations BF 5006 Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt 500 kV & Slatt 500 kV Caps No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV LONGHORN (40724) -> HEMLON12 (61955) CKT 1 at HEMLON12 Branch Amp 1702.8 2033.0 2000.1 101.6% 3000.0 67.8% Page 744 of 776 Appendix N2 - 16hs2a_lh_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV HEMLON11 (61956) -> HEMINWAY (60155) CKT 1 at HEMINWAY Branch Amp 1675.9 2026.8 2000.1 101.3% 3000.0 67.6% BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5043 Coyote-Slatt & Slatt 500 kV Caps LONGHORN (40724) -> HEMLON12 (61955) CKT 1 at HEMLON12 Branch Amp 1702.8 2038.3 2000.1 101.9% 3000.0 67.9% BF 5043 Coyote-Slatt & Slatt 500 kV Caps HEMLON11 (61956) -> HEMINWAY (60155) CKT 1 at HEMINWAY Branch Amp 1675.9 2022.6 2000.1 101.1% 3000.0 67.4% BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5211 Low Mon-McNary & McNary-John Day 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV & Slatt 500 kV Caps No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1120.9 1373.6 1237.0 111.0% 1396.0 98.4% BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 750.9 1018.9 920.0 110.8% 1046.8 97.3% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN No Violations BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1120.9 1288.6 1237.0 104.2% 1396.0 92.3% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 750.9 947.3 920.0 103.0% 1046.8 90.5% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1120.9 1333.0 1237.0 107.8% 1396.0 95.5% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 750.9 965.4 920.0 104.9% 1046.8 92.2% BF LH Longhorn-Coyote 500 kV & Longhorn Gen No Violations BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1120.9 1326.7 1237.0 107.2% 1396.0 95.0% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 750.9 978.5 920.0 106.4% 1046.8 93.5% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV No Violations BF LH McNary-Longhorn 500 kV & Longhorn Gen No Violations BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 No Violations BF McNary 230 kV SECT 3 No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen No Violations Bus: Buckley 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations Page 745 of 776 Appendix N2 - 16hs2a_lh_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Coyote-Slatt 500 kV LONGHORN (40724) -> HEMLON12 (61955) CKT 1 at LONGHORN Branch Amp 1702.8 2023.6 2000.1 101.2% 3000.0 67.5% N-1: Coyote-Slatt 500 kV HEMLON11 (61956) -> HEMINWAY (60155) CKT 1 at HEMINWAY Branch Amp 1675.9 2006.7 2000.1 100.3% 3000.0 66.9% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 750.9 928.6 920.0 100.9% 1046.8 88.7% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Longhorn 500 kV + FACRI HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1120.9 1268.7 1237.0 102.6% 1396.0 90.9% N-1: Hemingway-Longhorn 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1550.1 2847.2 2400.0 118.6% 3199.9 89.0% N-1: Hemingway-Longhorn 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1557.7 2867.0 2400.0 119.5% 3800.0 75.4% N-1: Hemingway-Longhorn 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1120.9 1354.9 1237.0 109.5% 1396.0 97.1% N-1: Hemingway-Longhorn 500 kV + PTSN Shunt LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 750.9 1001.0 920.0 108.8% 1046.8 95.6% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Longhorn-Coyote 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-McNary 500 kV MCNRY S1 (41351) -> MCNARY (40723) CKT 1 at MCNARY Branch MVA 1093.0 1371.3 1368.0 100.2% 1644.0 83.4% N-1: Malin-Summer Lake 500 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-Calpine PH No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations Page 746 of 776 Appendix N2 - 16hs2a_lh_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: McNary-Roundup 230 kV No Violations N-1: Midpoint-Hemingway 500 kV + PTSN Shunt No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Coyote-Slatt 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 1928.7 2920.4 2900.0 100.7% 4350.0 67.1% N-2: Ashe-Slatt & Coyote-Slatt 500 kV LONGHORN (40724) -> HEMLON12 (61955) CKT 1 at HEMLON12 Branch Amp 1702.8 2019.3 2000.1 101.0% 3000.0 67.3% N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: DC-BIPOLE MIDPOINT (60240) -> MPSNT501 (60237) CKT 1 at MIDPOINT Branch MVA 1270.2 1500.2 1500.0 100.0% 1650.0 90.9% N-2: DC-BIPOLE E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 294.9 330.5 326.3 101.3% 416.7 79.3% N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1550.1 2424.6 2400.0 101.0% 3199.9 75.8% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1794.7 2343.9 2199.9 106.5% 3280.5 71.5% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1779.5 2324.1 2199.9 105.6% 3280.5 70.8% N-2: DC-BIPOLE MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1676.0 2270.6 2199.7 103.2% 3235.5 70.2% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1676.0 2270.6 2199.7 103.2% 3235.5 70.2% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1599.6 2289.0 2134.0 107.3% 3499.9 65.4% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1578.2 2255.4 2134.0 105.7% 3499.9 64.4% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1557.7 2438.0 2400.0 101.6% 3800.0 64.2% Page 747 of 776 Appendix N2 - 16hs2a_lh_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 1556.7 2227.0 2134.0 104.4% 3499.9 63.6% N-2: DC-BIPOLE TABVAC11 (30031) -> TABVAC12 (30032) CKT 1 at TABVAC11 Branch Amp 1923.2 2478.0 2477.9 100.0% 3999.9 62.0% N-2: DC-BIPOLE YORKCANY (12091) % Δ Volts 1.001 0.949 -5.19% N-2: Double Palo Verde MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1599.6 2140.1 2134.0 100.3% 3499.9 61.1% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1557.7 2929.0 2400.0 122.0% 3800.0 77.1% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1467.3 3012.6 2700.0 111.6% 4000.0 75.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1563.1 2812.6 2400.0 117.2% 3800.0 74.0% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1548.0 2797.6 2400.0 116.6% 3800.0 73.6% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1563.1 2953.6 2400.0 123.1% 3800.0 77.7% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1548.0 2942.3 2400.0 122.6% 3800.0 77.4% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at SLATT Branch Amp 1928.7 3059.8 2900.0 105.5% 4350.0 70.3% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH11 Branch Amp 1728.9 3213.5 3000.0 107.1% 4050.0 79.3% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations Page 748 of 776 N3.0 Simultaneous Interaction Study: Idaho-Northwest (W-E) v West of McNary, Longhorn Terminus, Stanfield Generation Figure N3: Idaho-Northwest 2250 MW west-to-east, West of McNary 4500 MW, Longhorn Terminus, High Stanfield Gen 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puPONDROSB 1.08 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.07 puHEMINWAY 227.2 Mvar 1.09 puPONDROSA 0.0 Mvar 1 5 4 6 M W - 1 4 8 M v a r 1 4 3 5 M W - 1 8 1 M v a r 1 5 7 6 M W - 2 2 4 M v a r 1446 MW -158 Mvar 256 MW 65 Mvar 224 MW 61 Mvar 69 MW 92 Mvar 1.03 puHEMINWAY 1.08 pu JOHN DAY 447.6 Mvar 1.06 puMCNARY 1.08 puSLATT 353.1 Mvar 1.07 puLONGHORN 1.07 puSACJWA T 1.04 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.09 puGRASSLND 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.00 puROUNDUP COLD SPR 1.03 puWALLULA 42.7 Mvar 1.09 puHANFORD448.7 Mvar 1.08 puBUCKLEY 1.00 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.03 puWALAWALA 85.3 Mvar 1.02 puN POWDER 1.04 puTALBOT QUARTZTP 1.04 puWALA AVA 1.03 puHURICANE 1.03 puQUARTZ 1.03 puBROWNLEE 160.6 Mvar 120.5 Mvar 1.03 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.03 puLOLO 1.03 puHATWAI 1.08 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY 0.0 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.08 puMIDPOINT 234.7 Mvar 0.00 puCEDARHIL 0.0 Mvar 0.00 puBORAH 1.02 puMIDPOINT 0.0 Mvar 183.4 Mvar 0.00 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.02 puADELAIDE 0.99 puIDAHO-NV 1.03 puKINPORT 186.6 Mvar 0.00 puANTICLIN 0.0 Mvar 1.03 puGOSHEN 0.0 Mvar 0.00 puANT PST 1.03 puPOPULUS 0.0 Mvar 1.04 pu3MIKNOLL 0.00 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 0.0 Mvar 0.0 Mvar 1.09 puMARION 0.0 Mvar 1 3 2 8 M W - 5 4 M v a r 1 7 9 3 M W - 7 5 M v a r 1630 MW -135 Mvar 1634 MW -138 Mvar 452 MW -8 Mvar 0 MW -40 Mvar 1282 MW -82 Mvar 0 MW 0 Mvar 5 0 7 M W 1 2 M v a r 0 MW 0 Mvar 0 MW 0 Mvar 1261 MW 156 Mvar 226 MW 16 Mvar 219 MW 11 Mvar 0 MW 0 Mvar 0.00 puANTICLIN 591 MW 27 Mvar 590 MW 26 Mvar 34 MW 70 Mvar 29 MW 59 Mvar 234 MW -39 Mvar 0 MW 0 Mvar 47 MW 46 Mvar 373 MW 24 Mvar 734 MW -211 Mvar 104 MW -53 Mvar 66 MW -47 Mvar 57 MW -51 Mvar 0 MW 0 Mvar 0 MW 0 Mvar 997 MW -310 Mvar 1696 MW -342 Mvar 245 MW -28 Mvar 170 MW -87 Mvar 197 MW -58 Mvar 181 MW -11 Mvar 26 MW 9 Mvar 3 0 4 M W 3 4 M v a r 32 MW -6 Mvar 191 MW -8 Mvar 139 MW -44 Mvar 116 MW -17 Mvar 132 MW -12 Mvar 132 MW -16 Mvar 4 6 6 M W - 8 M v a r HORSEFLT 1.01 puBOISEBCH 95.1 Mvar 0.0 Mvar 1.02 puONTARIO 26 MW 9 Mvar 67 MW 16 Mvar 275 MW 49 Mvar 2 9 5 M W - 2 5 M v a r 93 MW -24 Mvar 376 MW -53 Mvar 301 MW -16 Mvar 301 MW -16 Mvar 310 MW -22 Mvar 313 MW -42 Mvar 198 MW -53 Mvar 256 MW -65 Mvar 0 M W 0 M v a r 0 M W 0 M v a r 1716 MW -54 Mvar 103 MW 184 Mvar 965 MW -91 Mvar 1520 MW -49 Mvar 985 MW -47 Mvar 916 MW -52 Mvar 731 MW -8 Mvar 493 MW -10 Mvar 484 MW -9 Mvar 682 MW -26 Mvar 698 MW -28 Mvar 452 MW 27 Mvar 3 4 3 M W 8 9 M v a r 1478 MW -98 Mvar 1 4 4 5 M W - 1 M v a r 1 4 1 0 M W 2 6 M v a r 1 3 7 2 M W 1 3 M v a r 1374 MW -112 Mvar ID-NW = -2250 MW Longhorn = -1562 MW Summer Lake = -69 MW Lolo = -295 MW Walla Walla = -173 MW LaGrande = -170 MW Midpoint West = -1535 MW Borah West = -68 MW Idaho-Sierra = 507 MW N of John Day = 7738 MW COI = 4746 MW PDCI = 3101 MW ID-MT = -310 MW W of McNary = 4500 MW W of Slatt = 4994 MW Alturas Project = 4 MW Path C = -1300 MW Montana Southeast = 543 MW TOT 2B1 = 96 MW TOT 2C = 259 MW 69 MW -70 Mvar 282 MW 57 Mvar 1170 MW 44 Mvar 1067 MW 47 Mvar 0 M W 0 M v a r 1 0 4 7 M W - 9 7 M v a r 1 5 6 2 M W 2 6 8 M v a r 2072 MW -237 Mvar 1641 MW -252 Mvar 1103 MW -210 Mvar Page 749 of 776 N3.1 Background & Need for Simultaneous Interaction Study This section is the same as Section N2 except Stanfield generation (located at McNary 500 kV) is modeled at its maximum, rather than Longhorn generation at its maximum. This section will determine whether there is an issue if the generation that stresses West of McNary were to be located at McNary rather than at Longhorn. Idaho-Northwest is stressed to 2250 MW west-to-east simultaneous with West of McNary at 4500 MW east-to-west. N3.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16hs2a_lh_stanfield_2250idnw_4500wom. Step-by-step development of the 16hs2a_lh_stanfield_2250idnw_4500wom base case: Step 1: Begin with the 16hs2a_lh_2250idnw_4500wom base case. Utilize the base case developed in Section N2.2 Steady State Case Stressing. Step 2: Stress the West of McNary path. This base case is intended to model Stanfield generation at its 1000 MW maximum capability. Utilizing the case from Section N2, Stanfield generation was increased from 362 MW to 1000 MW. Increases in Stanfield generation resulted in a corresponding decrease in Longhorn generation, from 1214 MW in the Section N2 base case to 620 MW in this base case. Total generation between Longhorn & Stanfield is 1620 MW, compared to the 1576 MW in the Section N2 base case, and 0 MW in the Section N1 base case. Step 3: Re-stress Idaho-Northwest The Idaho-Northwest path was re-stressed to 2250 MW in the west-to-east direction by reducing PacifiCorp East (PACE) and Idaho Power generation and replacing the generation with a schedule from the Northwest. No other paths were significantly altered. N3.3 Post Transient Results Post-transient contingency results for the 16hs2a_lh_stanfield_2250idnw_4500wom case can be found at the end of this section. Details for the severe/notable contingencies can be found below. Page 750 of 776 Severe Post-Transient Contingency #1 – BF IPC Hemingway-Longhorn 500 kV & Hem 500/230 Xfmr This is the limiting contingency for the Idaho-Northwest path in the west-to-east direction. This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 112% of its 1237 Amp nominal rating (99.3% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N2.4: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 112% (1237 Amp Rating) 99.3% (1396 Amp Rating) Oxbow – Lolo 230 kV 111% (920 Amp SOL) 97.2% (1047 Amp Rating) A breaker failure at Hemingway significantly stresses the Brownlee-Hells Canyon and Oxbow-Lolo 230 kV lines. Section 2.4 considers different Hemingway 500 kV substation configurations to avoid severe breaker failures, however, at this time this breaker failure is considered to be credible. In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #2 – Hemingway-Longhorn 500 kV + PTSN Shunt This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 110% of its 1237 Amp nominal rating (97.9% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N2.5: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 110% (1237 Amp Rating) 97.9% (1396 Amp Rating) Oxbow – Lolo 230 kV 108% (920 Amp SOL) 95.3% (1047 Amp Rating) In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Severe Post-Transient Contingency #3 – BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV This contingency results in overloading the Brownlee-Hells Canyon 230 kV line to 107% of its 1237 Amp nominal rating (94.5% of its 1396 Amp emergency rating). Since the overload is less than the Brownlee- Page 751 of 776 Hells Canyon 230 kV line’s emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Table N2.6: Post-transient results – BF IPC Midpoint-Hemingway 500 kV & Hem 500/230 Xfmr Element Nominal % Loading Emergency % Loading Brownlee-Hells Canyon 230 kV 107% (1237 Amp Rating) 94.5% (1396 Amp Rating) Oxbow – Lolo 230 kV 104% (920 Amp SOL) 91.5% (1047 Amp Rating) In reality, with high north-to-south loading on the COI, loss of Hemingway-Boardman 500 kV depresses the voltage at Malin to a value less than 1.05 pu, resulting in FACRI insertion of the Fort Rock series capacitors. The results above do not include the operation of the FACRI, as a conservative planning assumption. The Fort Rock series capacitors are located in the 500 kV lines south of Grizzly. Conclusion Three of the notable post transient contingencies resulting in more severe system stressing were noted above. These contingencies, as well as all other post-transient contingencies, result in acceptable performance. Ultimately, the results indicate that Idaho-Northwest can achieve a 2250 MW west-to- east rating simultaneous with West of McNary at 4500 MW even if the Hemingway-Boardman 500 kV transmission project has a Longhorn northwest terminus and generation is high at Stanfield rather than Longhorn. Page 752 of 776 Appendix N3 - 16hs2a_lh_stanfield_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1675.0 2898.9 2199.7 131.8% 3235.5 89.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1675.0 2898.9 2199.7 131.8% 3235.5 89.6% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALIN (40687) -> MALROU21 (40696) CKT 2 at MALROU21 Branch Amp 1673.0 2891.2 2666.9 108.4% 3999.9 72.3% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU23 (40698) -> ROUND MT (30005) CKT 2 at MALROU23 Branch Amp 1666.5 2882.1 2667.0 108.1% 4000.0 72.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU11 (90079) -> MALROU12 (90080) CKT 1 at MALROU11 Branch Amp 1628.7 2791.1 2229.7 125.2% 3514.0 79.4% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALIN (40687) -> MALROU11 (90079) CKT 1 at MALIN Branch Amp 1628.7 2791.1 2699.7 103.4% 3999.9 69.8% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV MALROU12 (90080) -> ROUND MT (30005) CKT 1 at MALROU12 Branch Amp 1623.8 2782.5 2699.7 103.1% 4000.0 69.6% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV No Violations BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LJ2 C1 (47807) % Δ Volts 1.033 0.981 -5.03% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LJ2 C2 (47811) % Δ Volts 1.043 0.979 -6.14% BF 4231 McNary-Longhorn 500 kV & McNary 500/230 kV Xfmr LEANJ C1 (44886) % Δ Volts 1.036 0.980 -5.41% BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV + RAS No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV + RAS No Violations BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV No Violations BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV No Violations BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps No Violations BF 5006 Slatt-Grassland 500 kV No Violations BF 5015 Ashe-Slatt 500 kV & Slatt 500 kV Caps No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV No Violations BF 5021 Slatt-John Day 500 kV No Violations BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV LONGHORN (40724) -> HEMLON12 (61955) CKT 1 at HEMLON12 Branch Amp 1684.4 2014.0 2000.1 100.7% 3000.0 67.1% BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV HEMLON11 (61956) -> HEMINWAY (60155) CKT 1 at HEMINWAY Branch Amp 1660.2 2009.9 2000.1 100.5% 3000.0 67.0% BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations Page 753 of 776 Appendix N3 - 16hs2a_lh_stanfield_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5043 Coyote-Slatt & Slatt 500 kV Caps LONGHORN (40724) -> HEMLON12 (61955) CKT 1 at HEMLON12 Branch Amp 1684.4 2002.4 2000.1 100.1% 3000.0 66.7% BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5211 Low Mon-McNary & McNary-John Day 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV & Slatt 500 kV Caps No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1386.0 1237.0 112.0% 1396.0 99.3% BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 751.7 1016.9 920.0 110.5% 1046.8 97.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr No Violations BF IPC Midpoint-Hem 500 kV & Adel-Midpoint 345 kV + PTSN HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1246.3 1237.0 100.7% 1396.0 89.3% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1337.8 1237.0 108.1% 1396.0 95.8% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 751.7 975.8 920.0 106.1% 1046.8 93.2% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1318.9 1237.0 106.6% 1396.0 94.5% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 751.7 958.1 920.0 104.1% 1046.8 91.5% BF LH Longhorn-Coyote 500 kV & Longhorn Gen No Violations BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1296.3 1237.0 104.8% 1396.0 92.9% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 751.7 946.0 920.0 102.8% 1046.8 90.4% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV No Violations BF LH McNary-Longhorn 500 kV & Longhorn Gen No Violations BF McNary 230 kV SECT 1 No Violations BF McNary 230 kV SECT 2 No Violations BF McNary 230 kV SECT 3 No Violations BF PGE Slatt-Grassland 500 kV & Boardman Coal Gen No Violations Bus: Buckley 500 kV No Violations Bus: Summer Lake 500 kV No Violations N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Coyote-Slatt 500 kV No Violations Page 754 of 776 Appendix N3 - 16hs2a_lh_stanfield_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV + RAS No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hells Canyon-Brownlee 230 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 751.7 931.2 920.0 101.2% 1046.8 89.0% N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Longhorn 500 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1366.1 1237.0 110.4% 1396.0 97.9% N-1: Hemingway-Longhorn 500 kV LOLO (48197) -> IMNAHA (60278) CKT 1 at IMNAHA Branch Amp 751.7 997.5 920.0 108.4% 1046.8 95.3% N-1: Hemingway-Longhorn 500 kV + FACRI PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1552.7 2843.3 2400.0 118.5% 3199.9 88.9% N-1: Hemingway-Longhorn 500 kV + FACRI PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1560.4 2863.0 2400.0 119.3% 3800.0 75.3% N-1: Hemingway-Longhorn 500 kV + FACRI HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1281.3 1237.0 103.6% 1396.0 91.8% N-1: Hemingway-Summer Lake 500 kV No Violations N-1: Horse Hv-McNary 230 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Longhorn-Coyote 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-McNary 500 kV No Violations N-1: Malin-Summer Lake 500 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary S2-McNary S3 230 kV No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-Calpine PH No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: Midpoint-Hemingway 500 kV + PTSN Shunt HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1237.8 1237.0 100.1% 1396.0 88.7% N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations Page 755 of 776 Appendix N3 - 16hs2a_lh_stanfield_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV HELLSCYN (60150) -> BROWNLEE (60095) CKT 1 at HELLSCYN Branch Amp 1135.0 1239.6 1237.0 100.2% 1396.0 88.8% N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Coyote-Slatt 500 kV No Violations N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & Coyote-Slatt 500 kV No Violations N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: DC-BIPOLE YORKCANY (12091) % Δ Volts 1.001 0.949 -5.19% N-2: DC-BIPOLE MIDPOINT (60240) -> MPSNT501 (60237) CKT 1 at MIDPOINT Branch MVA 1270.6 1500.5 1500.0 100.0% 1650.0 90.9% N-2: DC-BIPOLE E.NICOLS (32212) -> RIO OSO (32214) CKT 1 at E.NICOLS Branch Amp 294.8 330.4 326.3 101.2% 416.7 79.3% N-2: DC-BIPOLE PONSUM13 (90101) -> PONSUM14 (90102) CKT 1 at PONSUM13 Branch Amp 1552.7 2427.9 2400.0 101.2% 3199.9 75.9% N-2: DC-BIPOLE ROUTAB21 (30018) -> ROUTAB22 (30019) CKT 2 at ROUTAB21 Branch Amp 1793.8 2342.8 2199.9 106.5% 3280.5 71.4% N-2: DC-BIPOLE ROUTAB11 (30016) -> ROUTAB12 (30017) CKT 1 at ROUTAB11 Branch Amp 1778.6 2322.9 2199.9 105.6% 3280.5 70.8% N-2: DC-BIPOLE MALROU21 (40696) -> MALROU22 (40697) CKT 2 at MALROU22 Branch Amp 1675.0 2269.3 2199.7 103.2% 3235.5 70.1% N-2: DC-BIPOLE MALROU22 (40697) -> MALROU23 (40698) CKT 2 at MALROU22 Branch Amp 1675.0 2269.3 2199.7 103.2% 3235.5 70.1% N-2: DC-BIPOLE MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1599.8 2289.1 2134.0 107.3% 3499.9 65.4% N-2: DC-BIPOLE MIDWAY (30060) -> MIDVIN11 (30061) CKT 1 at MIDWAY Branch Amp 1578.5 2255.4 2134.0 105.7% 3499.9 64.4% N-2: DC-BIPOLE PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM11 Branch Amp 1560.4 2441.5 2400.0 101.7% 3800.0 64.3% N-2: DC-BIPOLE MIDVIN12 (30062) -> VINCENT (24156) CKT 1 at MIDVIN12 Branch Amp 1556.9 2227.1 2134.0 104.4% 3499.9 63.6% N-2: Double Palo Verde MIDVIN22 (30064) -> VINCENT (24156) CKT 2 at MIDVIN22 Branch Amp 1599.8 2140.6 2134.0 100.3% 3499.9 61.2% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS PONSUM11 (90099) -> PONSUM12 (90100) CKT 1 at PONSUM12 Branch Amp 1560.4 2931.8 2400.0 122.2% 3800.0 77.2% Page 756 of 776 Appendix N3 - 16hs2a_lh_stanfield_2250idnw_4500wom Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV + RAS MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1465.3 3011.0 2700.0 111.5% 4000.0 75.3% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1563.3 2813.9 2400.0 117.2% 3800.0 74.0% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1548.3 2798.9 2400.0 116.6% 3800.0 73.7% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON16 Branch Amp 1563.3 2953.2 2400.0 123.0% 3800.0 77.7% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV + RAS CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1548.3 2942.0 2400.0 122.6% 3800.0 77.4% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV + RAS SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1910.3 3048.4 2900.0 105.1% 4350.0 70.1% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV + RAS GRIJOH12 (90065) -> GRIJOH11 (90064) CKT 1 at GRIJOH12 Branch Amp 1735.7 3218.4 3000.0 107.3% 4050.0 79.5% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Schultz-Wautoma & Vantage-Schultz 500 kV + RAS No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV + RAS No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations Page 757 of 776 N4.0 Simultaneous Interaction Study: Idaho-Northwest (E-W) v West of Slatt, Grassland Terminus Figure N4: Idaho-Northwest 3400 MW east-to-west, West of Slatt 5500 MW, Grassland Terminus 1.09 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.09 puCAPTJACK 0.0 Mvar 0.0 Mvar -294.5 Mvar 1.10 puPONDROSB 1.10 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.06 puHEMINWAY 445.6 Mvar 1.09 puPONDROSA -292.8 Mvar 9 4 3 M W - 1 6 0 M v a r 8 6 0 M W - 2 2 7 M v a r 3 6 5 M W 2 8 1 M v a r 178 MW 144 Mvar 195 MW -46 Mvar 172 MW -36 Mvar 1418 MW 289 Mvar 1.03 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.08 puSACJWA T 1.04 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.07 pu GRASSLND 0.0 Mvar 1.08 pu 1.08 puLOW MON 0.0 Mvar 1.03 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.03 puHAT ROCK 1.02 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.02 puTALBOT QUARTZTP 1.04 puWALA AVA 1.03 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.04 puLOLO 1.04 puHATWAI 1.09 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -24.5 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.11 puMIDPOINT -134.6 Mvar 1.10 puCEDARHIL 0.0 Mvar 1.09 puBORAH 1.05 puMIDPOINT 0.0 Mvar 192.5 Mvar 1.10 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.04 puADELAIDE 1.05 puIDAHO-NV 1.03 puKINPORT 186.4 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar 0.0 Mvar 1.11 puMARION 388.6 Mvar 8 4 1 M W - 1 4 4 M v a r 1 8 3 1 M W - 2 1 0 M v a r 769 MW -194 Mvar 770 MW -196 Mvar 973 MW -131 Mvar 1843 MW -353 Mvar 1492 MW -207 Mvar 1151 MW 128 Mvar 2 5 7 M W - 1 8 M v a r 1152 MW -33 Mvar 838 MW -111 Mvar 690 MW -90 Mvar 393 MW -93 Mvar 409 MW -99 Mvar 117 MW 86 Mvar 1.05 puANTICLIN 554 MW 3 Mvar 553 MW 3 Mvar 688 MW -63 Mvar 680 MW -101 Mvar 423 MW 41 Mvar 838 MW -111 Mvar 207 MW -91 Mvar 360 MW -1 Mvar 562 MW -25 Mvar 338 MW -8 Mvar 428 MW -97 Mvar 466 MW -104 Mvar 1289 MW 93 Mvar 1169 MW -174 Mvar 701 MW -355 Mvar 1545 MW -294 Mvar 172 MW -34 Mvar 214 MW -13 Mvar 177 MW -6 Mvar 76 MW 6 Mvar 29 MW -17 Mvar 1 3 9 M W - 4 6 M v a r 104 MW -42 Mvar 293 MW -57 Mvar 186 MW -65 Mvar 170 MW -40 Mvar 180 MW -36 Mvar 181 MW -41 Mvar 1 6 M W 1 3 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -79.2 Mvar 1.03 puONTARIO 29 MW -17 Mvar 48 MW -7 Mvar 65 MW -15 Mvar 1 8 0 M W - 2 3 M v a r 176 MW -30 Mvar 59 MW 24 Mvar 71 MW -4 Mvar 71 MW -4 Mvar 73 MW -4 Mvar 73 MW 3 Mvar 7 MW -11 Mvar 9 MW -15 Mvar 6 0 M W 4 4 M v a r 6 0 M W 4 3 M v a r 1562 MW -91 Mvar 1516 MW -233 Mvar 1521 MW -209 Mvar 1708 MW -51 Mvar 1047 MW -23 Mvar 973 MW -23 Mvar 785 MW -3 Mvar 552 MW -39 Mvar 542 MW -38 Mvar 762 MW -29 Mvar 780 MW -30 Mvar 614 MW 103 Mvar 5 2 M W - 1 9 M v a r 2093 MW -404 Mvar 9 0 8 M W - 2 0 M v a r 8 5 1 M W 7 M v a r 1 5 4 1 M W - 2 2 3 M v a r 1543 MW -381 Mvar ID-NW = 3400 MW Grassland = 1277 MW Summer Lake = 1418 MW Lolo = 180 MW Walla Walla = 310 MW LaGrande = 214 MW Midpoint West = 2851 MW Borah West = 3094 MW Idaho-Sierra = 257 MW N of John Day = 4552 MW COI = 3054 MW PDCI = 1580 MW ID-MT = 125 MW W of McNary = 4501 MW W of Slatt = 5500 MW Alturas Project = -258 MW Path C = 609 MW Montana Southeast = -561 MW TOT 2B1 = 488 MW TOT 2C = 510 MW 1390 MW -98 Mvar 117 MW -11 Mvar 461 MW 107 Mvar 490 MW 6 Mvar 121 M W 84 M v a r 8 8 5 M W - 2 0 8 M v a r 1 2 7 7 M W - 3 6 5 M v a r 1329 MW 68 Mvar COYOTE 1718 MW -175 Mvar 1.08 puLONGHORN 161 MW -141 Mvar 1188 MW -132 Mvar Page 758 of 776 N4.1 Background & Need for Simultaneous Interaction Study The Hemingway-Boardman Phase II study review group requested that the impacts of the Hemingway to Boardman project be evaluated with the West of Slatt path at its 5500 MW rating simultaneous with Idaho-Northwest at 3400 MW east-to-west. The study group also requested that the study be performed leaving out the Cascade Crossings Transmission Project. The West of Slatt path is made up of the following lines: (1) McNary-John Day 500 kV, (2) Slatt-John Day 500 kV and (3) Slatt-Buckley 500 kV. N4.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16la1sa_3400idnw_5500wos. Step-by-step development of the 16la1sa_3400idnw_5500wos base case: Step 1: Begin with the 16la1sa_3400idnw_N base case. Utilize the base case developed in Section 5.1.2 Steady State Case Stressing. Remove the Cascade Crossing Transmission Project from the case. Step 2: Stress the West of Slatt path. Generation east of Slatt was increased to stress the West of Slatt path to 5,500 MW. The path flows were increased by modifying generation in the Pacific Northwest, mostly in Southeast Washington, and the Lower Columbia Basin, including ~1000 MW of Longhorn wind generation modeled as connecting to Longhorn 500 kV. The generation increase east of Slatt cooresponds with a reduction in generation west of Slatt at places such as Western Oregon/Washington, Centrailia, John Day, The Dalles, and Bonneville. Generation was also scheduled from the Northwest to California. Step 3: Re-stress Idaho-Northwest The Idaho-Northwest path was re-stressed to 3400 MW in the east-to-west direction by adjusting schedules between PacifiCorp East (PACE), Idaho Power, and the Northwest. In order to achieve 3400 MW on Idaho-Northwest in this configuration, the Hines 138/115 kV transformer had to be opened, and the Burns 500 kV series capacitor was completely bypassed. Page 759 of 776 N4.3 Post Transient Results Post-transient contingency results for the 16la1sa_3400idnw_5500wos case can be found at the end of this section. Details for the severe/notable contingencies can be found below. Post-Transient Contingency #1 – BF IPC Hemingway-Grassland 500 kV & Hemingway 500/230 Xfmr This is the limiting contingency for the Idaho-Northwest path in the east-to-west direction. In previous east-to-west study cases in Section 5, this contingency resulted in overloading the Burns series capacitor to its emergency rating. In this case, the Burns series capacitor is bypassed pre-contingency, due to the pre-contingency loading of the Hemingway-Summer Lake 500 kV line. In real life, during peak Idaho- Northwest east-to-west flow conditions, the COI is generally flowing at a value less than 2000 MW north-to-south. In order to stress West of Slatt, COI is stressed to 3000+ MW in this case, putting pressure on the Hemingway-Summer Lake 500 kV line. The end result is the need to bypass the Burns series capacitor, which will generally be avoided, if possible. Post-Transient Contingency #2 – N-1: Hemingway-Grassland 500 kV Removal of the Burns series capacitor results in less robust voltage performance across Idaho-Northwest busses for Idaho-Northwest line outages. To make up for this poor voltage performance, the LaGrande series capacitor is modeled as switching in, post-disturbence, otherwise post-transient voltage deviation at LaGrande would have exceeded 5% for this N-1 contingency. In real life, the LaGrande shunt capacitor switches in when the LaGrange 230 kV bus voltage falls below 1.0 pu for a certain number of seconds. This action is not controlled via RAS. Post-Transient Contingency #3 – BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr + RAS This contingency results in overloading the Midpoint 500 kV series capacitor to 134% of its 1732 Amp nominal rating (99.5% of its 2338 Amp emergency rating). Since the overload is less than the Midpoint 500 kV series capacitors emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Conclusion Three of the notable post transient contingencies resulting in more severe system stressing were noted above. These contingencies, as well as all other post-transient contingencies, result in acceptable performance. Ultimately, the results indicate that Idaho-Northwest can achieve a 3400 MW east-to- west rating simultaneous with West of Slatt at 5500 MW. Page 760 of 776 Appendix N4 - 16la1sa_3400idnw_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV No Violations BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV No Violations BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV No Violations BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1973.9 2905.3 2900.0 100.2% 4350.0 66.8% BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV BELL SC (40096) -> BELL BPA (40091) CKT 1 at BELL BPA Branch Amp 1916.9 2871.3 2200.1 130.5% 3000.0 95.7% BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 1768.7 1732.1 102.1% 2338.3 75.6% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV BELL SC (40096) -> BELL BPA (40091) CKT 1 at BELL BPA Branch Amp 1916.9 2282.5 2200.1 103.7% 3000.0 76.1% BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 1759.4 1732.1 101.6% 2338.3 75.2% BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 314.7 300.0 104.9% 370.0 85.0% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 307.8 300.0 102.6% 370.0 83.2% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 251.5 302.9 300.0 101.0% 370.0 81.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 251.5 302.9 300.0 101.0% 370.0 81.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1449.2 2210.0 2000.1 110.5% 3000.0 73.7% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1470.1 2174.7 2000.1 108.7% 3000.0 72.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 314.8 300.0 104.9% 370.0 85.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 308.1 300.0 102.7% 370.0 83.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 251.5 301.0 300.0 100.3% 370.0 81.4% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 251.5 301.0 300.0 100.3% 370.0 81.4% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1449.2 2206.2 2000.1 110.3% 3000.0 73.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1470.1 2166.8 2000.1 108.3% 3000.0 72.2% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 319.8 300.0 106.6% 370.0 86.4% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 312.8 300.0 104.3% 370.0 84.6% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 88.5 123.8 112.0 110.5% 146.7 84.4% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 751.2 1100.8 1008.1 109.2% 1250.1 88.1% Page 761 of 776 Appendix N4 - 16la1sa_3400idnw_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 734.8 1079.7 1000.1 108.0% 1250.1 86.4% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps N POWDER (60312) % Δ Volts 1.032 0.980 -5.04% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps LAGRANDE (40621) % Δ Volts 1.024 0.971 -5.18% BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps N POWDER (60313) % Δ Volts 1.011 0.957 -5.34% BF 5015 Ashe-Slatt 500 kV & Slatt 500 kV Caps No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1973.9 2915.7 2900.0 100.5% 4350.0 67.0% BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5043 Slatt-Coyote 500 kV & Slatt 500 kV Caps No Violations BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5211 Low Mon-McNary 500 kV & McNary-John Day 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV & Slatt 500 kV Caps No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 88.5 124.3 112.0 111.0% 146.7 84.7% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 308.9 300.0 103.0% 370.0 83.5% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 302.6 300.0 100.9% 370.0 81.8% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 751.2 1048.9 1008.1 104.0% 1250.1 83.9% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at WALAWALA Branch Amp 734.8 1028.5 1000.1 102.8% 1250.1 82.3% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 88.5 125.7 112.0 112.2% 146.7 85.7% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 314.1 300.0 104.7% 370.0 84.9% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 307.6 300.0 102.5% 370.0 83.1% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 251.5 300.2 300.0 100.1% 370.0 81.1% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 251.5 300.2 300.0 100.1% 370.0 81.1% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 751.2 1079.5 1008.1 107.1% 1250.1 86.4% BF IPC Hem-Grassland 500 kV & Hem 500/230 Xfmr + RAS HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 734.8 1058.6 1000.1 105.9% 1250.1 84.7% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 311.5 300.0 103.8% 370.0 84.2% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 305.2 300.0 101.7% 370.0 82.5% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1449.2 2252.9 2000.1 112.6% 3000.0 75.1% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1470.1 2217.6 2000.1 110.9% 3000.0 73.9% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 265.8 310.0 300.0 103.3% 370.0 83.8% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 304.0 300.0 101.3% 370.0 82.2% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 751.2 1034.9 1008.1 102.7% 1250.1 82.8% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 734.8 1014.6 1000.1 101.5% 1250.1 81.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 2326.7 1732.1 134.3% 2338.3 99.5% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1120.6 1605.4 1492.7 107.5% 2264.2 70.9% Bus: Buckley 500 kV No Violations Bus: Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 315.3 300.0 105.1% 370.0 85.2% Bus: Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 308.5 300.0 102.8% 370.0 83.4% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 251.5 303.0 300.0 101.0% 370.0 81.9% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 251.5 303.0 300.0 101.0% 370.0 81.9% Page 762 of 776 Appendix N4 - 16la1sa_3400idnw_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts Bus: Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1449.2 2208.3 2000.1 110.4% 3000.0 73.6% Bus: Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1470.1 2173.3 2000.1 108.7% 3000.0 72.4% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV + RAS No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Coyote-Slatt 500 kV No Violations N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations N-1: Dworshak-Hatwai 500 kV No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Grassland-Slatt 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 319.5 300.0 106.5% 370.0 86.3% N-1: Grassland-Slatt 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 312.5 300.0 104.2% 370.0 84.5% N-1: Grassland-Slatt 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 88.5 123.5 112.0 110.3% 146.7 84.2% N-1: Grassland-Slatt 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 751.2 1094.9 1008.1 108.6% 1250.1 87.6% N-1: Grassland-Slatt 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 734.8 1073.9 1000.1 107.4% 1250.1 85.9% N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hells Canyon-Brownlee 230 kV No Violations N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Grassland 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 88.5 124.5 112.0 111.1% 146.7 84.9% N-1: Hemingway-Grassland 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 308.2 300.0 102.7% 370.0 83.3% N-1: Hemingway-Grassland 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 301.9 300.0 100.6% 370.0 81.6% N-1: Hemingway-Grassland 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 751.2 1067.9 1008.1 105.9% 1250.1 85.4% N-1: Hemingway-Grassland 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 734.8 1047.2 1000.1 104.7% 1250.1 83.8% N-1: Hemingway-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 265.8 311.5 300.0 103.8% 370.0 84.2% Page 763 of 776 Appendix N4 - 16la1sa_3400idnw_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Hemingway-Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 259.3 305.1 300.0 101.7% 370.0 82.5% N-1: Hemingway-Summer Lake 500 kV HEMBOA13 (61951) -> GRASSLND (43049) CKT 1 at GRASSLND Branch Amp 1449.2 2244.1 2000.1 112.2% 3000.0 74.8% N-1: Hemingway-Summer Lake 500 kV HEMINWAY (60155) -> HEMBOA11 (61953) CKT 1 at HEMINWAY Branch Amp 1470.1 2209.5 2000.1 110.5% 3000.0 73.7% N-1: Horse Hv-McNary 230 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-McNary 500 kV No Violations N-1: Malin-Summer Lake 500 kV No Violations N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-Coyote 500 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: Midpoint-Hemingway 500 kV No Violations N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 984.8 1038.1 950.0 109.3% 1286.0 80.7% N-1: Ostrander-Troutdale 500 kV TROUTDAL (41095) % Δ Volts 1.081 1.023 -5.37% N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Populus-Cedar Hill-Hemingway 500 kV + RAS MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 2005.1 1732.1 115.8% 2338.3 85.7% N-1: Populus-Cedar Hill-Hemingway 500 kV + RAS POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1120.6 1607.8 1492.7 107.7% 2264.2 71.0% N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Coyote-Slatt 500 kV PORT ANG (40841) % Δ Volts 1.000 0.950 -5.00% N-2: Ashe-Marion & Coyote-Slatt 500 kV HOOD RVR (45145) % Δ Volts 0.970 0.921 -5.05% Page 764 of 776 Appendix N4 - 16la1sa_3400idnw_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Ashe-Marion & Coyote-Slatt 500 kV POWERDLE (45251) % Δ Volts 0.969 0.920 -5.06% N-2: Ashe-Marion & Coyote-Slatt 500 kV WILRDJON (41163) % Δ Volts 0.967 0.918 -5.07% N-2: Ashe-Marion & Coyote-Slatt 500 kV CONDITPH (45057) % Δ Volts 0.965 0.916 -5.08% N-2: Ashe-Marion & Coyote-Slatt 500 kV BALD MT (41185) % Δ Volts 0.965 0.916 -5.08% N-2: Ashe-Marion & Coyote-Slatt 500 kV ROSS (40901) % Δ Volts 1.023 0.971 -5.08% N-2: Ashe-Marion & Coyote-Slatt 500 kV BINGEN (40115) % Δ Volts 0.963 0.914 -5.09% N-2: Ashe-Marion & Coyote-Slatt 500 kV LJ2 1 (47808) % Δ Volts 1.013 0.961 -5.13% N-2: Ashe-Marion & Coyote-Slatt 500 kV TMBLCR T (41079) % Δ Volts 1.012 0.960 -5.14% N-2: Ashe-Marion & Coyote-Slatt 500 kV LJ2 C1 (47807) % Δ Volts 1.031 0.977 -5.24% N-2: Ashe-Marion & Coyote-Slatt 500 kV SAPPHO (40945) % Δ Volts 0.971 0.920 -5.25% N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & Coyote-Slatt 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 1733.1 1732.1 100.1% 2338.3 74.1% N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 251.5 302.3 300.0 100.8% 370.0 81.7% N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 251.5 302.3 300.0 100.8% 370.0 81.7% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 251.5 323.3 300.0 107.8% 370.0 87.4% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 251.5 323.3 300.0 107.8% 370.0 87.4% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO Branch MVA 251.9 328.0 315.0 104.1% 394.0 83.2% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO Branch MVA 251.9 326.8 315.0 103.7% 394.0 82.9% N-2: Double Palo Verde CHOLLA (14000) -> CHOSAG11 (14014) CKT 1 at CHOSAG11 Branch Amp 971.6 1071.5 1026.0 104.4% 1538.1 69.7% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM12 Branch Amp 1693.8 2814.9 2700.0 104.3% 4000.0 70.4% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV No Violations N-2: Grizzly-Malin & Malin-Summer Lake 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 975.5 2514.5 2400.0 104.8% 3800.0 66.2% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON12 Branch Amp 957.1 2497.1 2400.0 104.0% 3800.0 65.7% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV BELL SC (40096) -> BELL BPA (40091) CKT 1 at BELL SC Branch Amp 1916.9 2565.0 2200.1 116.6% 3000.0 85.5% N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV No Violations N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV No Violations N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations Page 765 of 776 Appendix N4 - 16la1sa_3400idnw_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV BELL SC (40096) -> BELL BPA (40091) CKT 1 at BELL BPA Branch Amp 1916.9 2871.3 2200.1 130.5% 3000.0 95.7% N-2: Lower Granite-Central Ferry #1 & #2 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 1768.7 1732.1 102.1% 2338.3 75.6% N-2: McNary-John Day & Rock Creek-John Day 500 kV No Violations N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV DALREED (45075) -> DR W TP (45162) CKT 1 at DALREED Branch Amp 462.2 810.2 795.7 101.8% 1006.6 80.5% N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 1800.5 1732.1 104.0% 2338.3 77.0% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV KEELER (40601) -> KEELER (40599) CKT 1 at KEELER Branch MVA 984.8 1019.8 950.0 107.3% 1286.0 79.3% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV DALREED (45075) -> DR W TP (45162) CKT 1 at DALREED Branch Amp 462.2 801.9 795.7 100.8% 1006.6 79.7% N-2: McNary-John Day 500 kV & McNary-Ross 345 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1660.0 1792.5 1732.1 103.5% 2338.3 76.7% N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV No Violations N-2: Schultz-Wautoma & Vantage-Schultz 500 kV No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations Page 766 of 776 N5.0 Simultaneous Interaction Study: Idaho-Northwest (E-W) v West of McNary & West of Slatt, Longhorn Terminus Figure N5: Idaho-Northwest 3400 MW east-to-west, West of McNary 4500 MW, West of Slatt 5500 MW, Longhorn Terminus 1.08 puMALIN 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 0.0 Mvar 1.08 puCAPTJACK 0.0 Mvar 0.0 Mvar -291.7 Mvar 1.10 puPONDROSB 1.10 puGRIZZLY 0.0 Mvar 1.08 puSUMMER L BURNS 0.0 Mvar 1.05 puHEMINWAY 440.2 Mvar 1.09 puPONDROSA 0.0 Mvar 1 0 5 7 M W - 1 2 6 M v a r 9 7 4 M W - 1 8 4 M v a r 4 6 6 M W 1 2 4 M v a r 279 MW 259 Mvar 158 MW -44 Mvar 139 MW -35 Mvar 1457 MW 314 Mvar 1.02 puHEMINWAY 1.09 pu JOHN DAY 0.0 Mvar 1.07 puMCNARY 1.08 puSLATT 0.0 Mvar 1.07 puLONGHORN 1.08 puSACJWA T 1.04 puMCNRY S1 1.08 puASHE 0.0 Mvar 1.08 puGRASSLND 1.07 puCOYOTE 1.08 puLOW MON 0.0 Mvar 1.02 puROUNDUP COLD SPR 1.03 puWALLULA 0.0 Mvar 1.09 puHANFORD 0.0 Mvar 1.09 puBUCKLEY 1.02 puLAGRANDE 0.0 Mvar 1.04 puHAT ROCK 1.03 puWALAWALA 0.0 Mvar 1.03 puN POWDER 1.05 puTALBOT QUARTZTP 1.05 puWALA AVA 1.03 puHURICANE 1.04 puQUARTZ 1.03 puBROWNLEE 0.0 Mvar 128.5 Mvar 1.04 puDRYCREEK 0.0 Mvar 1.03 puHELLSCYN 1.04 puLOLO 1.04 puHATWAI 1.09 puHATWAI 1.08 puLOW GRAN 1.08 puCEN FERY -44.5 Mvar 1.08 puLIT GOOS 1.03 puOXBOW 1.10 puMIDPOINT -132.5 Mvar 1.09 puCEDARHIL-88.5 Mvar 1.08 puBORAH 1.04 puMIDPOINT 0.0 Mvar 0.0 Mvar 1.09 puPOPULUS 0.0 Mvar 1.03 puBORAH 0.0 Mvar 1.03 puADELAIDE 1.05 puIDAHO-NV 1.03 puKINPORT 185.9 Mvar 1.08 puANTICLIN 0.0 Mvar 1.02 puGOSHEN 0.0 Mvar 1.04 puANT PST 1.04 puPOPULUS 0.0 Mvar 1.02 pu3MIKNOLL 1.07 puAEOLUS 0.0 Mvar 1.05 puBRIDGER 220.5 Mvar 220.5 Mvar 0.0 Mvar 1.11 puMARION 388.2 Mvar 9 3 5 M W - 1 4 6 M v a r 1 8 5 6 M W - 2 0 6 M v a r 883 MW -209 Mvar 885 MW -211 Mvar 904 MW -118 Mvar 572 MW 7 Mvar 1415 MW -242 Mvar 1077 MW 82 Mvar 2 8 1 M W - 3 8 M v a r 1078 MW -4 Mvar 782 MW -90 Mvar 666 MW -161 Mvar 365 MW -58 Mvar 380 MW -62 Mvar 157 MW 64 Mvar 1.05 puANTICLIN 538 MW 4 Mvar 538 MW 4 Mvar 623 MW -31 Mvar 617 MW -66 Mvar 371 MW 51 Mvar 782 MW -90 Mvar 196 MW -85 Mvar 346 MW 5 Mvar 548 MW -15 Mvar 312 MW 4 Mvar 393 MW -65 Mvar 426 MW -70 Mvar 1254 MW 102 Mvar 1160 MW -166 Mvar 147 MW -308 Mvar 1528 MW -288 Mvar 200 MW -49 Mvar 244 MW -20 Mvar 208 MW -9 Mvar 11 MW 46 Mvar 11 MW -12 Mvar 1 6 6 M W - 6 7 M v a r 116 MW -31 Mvar 334 MW -88 Mvar 194 MW -70 Mvar 176 MW -44 Mvar 186 MW -40 Mvar 188 MW -45 Mvar 6 3 M W 7 M v a r HORSEFLT 1.03 puBOISEBCH 0.0 Mvar -78.9 Mvar 1.03 puONTARIO 11 MW -12 Mvar 69 MW -22 Mvar 79 MW -16 Mvar 2 1 9 M W - 2 6 M v a r 205 MW -22 Mvar 72 MW 24 Mvar 80 MW -3 Mvar 80 MW -3 Mvar 83 MW -4 Mvar 83 MW 4 Mvar 9 MW 10 Mvar 11 MW 13 Mvar 4 7 M W 4 6 M v a r 4 7 M W 4 5 M v a r 1544 MW -94 Mvar 1079 MW -292 Mvar 1091 MW -140 Mvar 1222 MW -73 Mvar 768 MW 1 Mvar 713 MW -23 Mvar 609 MW 12 Mvar 514 MW -37 Mvar 505 MW -35 Mvar 637 MW -19 Mvar 652 MW -20 Mvar 826 MW 66 Mvar 1 7 M W - 4 0 M v a r 2086 MW -385 Mvar 1 0 2 5 M W 2 5 M v a r 9 6 3 M W 4 7 M v a r 1 6 7 5 M W - 1 4 0 M v a r 1678 MW -320 Mvar ID-NW = 3400 MW Longhorn = 1125 MW Summer Lake = 1457 MW Lolo = 219 MW Walla Walla = 355 MW LaGrande = 244 MW Midpoint West = 2674 MW Borah West = 2873 MW Idaho-Sierra = 281 MW N of John Day = 3944 MW COI = 3537 MW PDCI = 1580 MW ID-MT = 130 MW W of McNary = 4500 MW W of Slatt = 5501 MW Alturas Project = -259 MW Path C = 390 MW Montana Southeast = -557 MW TOT 2B1 = 560 MW TOT 2C = 583 MW 1427 MW -115 Mvar 139 MW -1 Mvar 203 MW 132 Mvar 234 MW 14 Mvar 94 M W 87 M v a r 8 5 3 M W - 2 1 6 M v a r 1 1 2 5 M W - 2 5 3 M v a r 652 MW 61 Mvar 2185 MW -92 Mvar 1646 MW -169 Mvar Page 767 of 776 N5.1 Background & Need for Simultaneous Interaction Study The Hemingway-Boardman Phase II study review group requested that the impacts of the Hemingway to Boardman project be evaluated with theWest of McNary path at its 4500 MW rating and West of Slatt path at its 5500 MW rating simultaneous with Idaho-Northwest at 3400 MW east-to-west. The study group also requested that the study be performed leaving out the Cascade Crossings Transmission Project. Given the uncertainty of the northwest terminus of the Hemingway-Boardman project, this section looks at a Longhorn terminus option. Terminating the Hemingway-Boardman 500 kV transmission project at Longhorn is assumed not to affect the definition of the West of McNary path. This may change in the future. The West of McNary path is made up of the following lines: (1) Coyote-Slatt 500 kV, (2) McNary-John Day 500 kV, (3) McNary- Ross 345 kV, (4) Jones Canyon-Tumble Creek 230 kV and (5) Harvalum-Big Eddy 230 kV. The West of Slatt path is made up of the following lines: (1) McNary-John Day 500 kV, (2) Slatt-John Day 500 kV and (3) Slatt-Buckley 500 kV. N5.2 Steady State Case Stressing For the best information about path flows, generation patterns, etc, base cases can be downloaded from the following FTP site for approximately 90 days after this report is submitted to WECC: https://fileexch.idahopower.com/ User Name: B2HPhase2 Password: Data4Study The case name for this study is 16la1sa_lh_3400idnw_4500wom_5500wos. Step-by-step development of the 16la1sa_lh_3400idnw_4500wom_5500wos base case: Step 1: Begin with the 16la1sa_3400idnw_5500wos base case. Utilize the base case developed in Section N4.2 Steady State Case Stressing. Shift the terminus of the Hemingway-Boardman transmission project from Grassland to Longhorn. Step 2: Stress the West of McNary & West of Slatt paths. By moving the terminus of the Hemingway-Boardman transmission project to Longhorn, the case was almost already stressed to 4500 MW on West of McNary and 5500 MW on West of Slatt. Generation at Longhorn was switched in, and schedules between the Northwest, Idaho and Calcifornia were adjusted to complete the case modification. Page 768 of 776 N5.3 Post Transient Results Post-transient contingency results for the 16la1sa_lh_3400idnw_4500wom_5500wos case can be found at the end of this section. Details for the severe/notable contingencies can be found below. Post-Transient Contingency #1 – BF IPC Hemingway-Longhorn 500 kV & Hemingway 500/230 Xfmr This is the limiting contingency for the Idaho-Northwest path in the east-to-west direction. In previous east-to-west study cases in Section 5, this contingency resulted in overloading the Burns series capacitor to its emergency rating. In this case, the Burns series capacitor is bypassed pre-contingency, due to the pre-contingency loading of the Hemingway-Summer Lake 500 kV line. In real life, during peak Idaho- Northwest east-to-west flow conditions, the COI is generally flowing at a value less than 2000 MW north-to-south. In order to stress West of Slatt, COI is stressed to 3000+ MW in this case, putting pressure on the Hemingway-Summer Lake 500 kV line. The end result is the need to bypass the Burns series capacitor, which will generally be avoided, if possible. Post-Transient Contingency #2 – N-1: Hemingway-Longhorn 500 kV Removal of the Burns series capacitor results in less robust voltage performance across Idaho-Northwest busses for Idaho-Northwest line outages. To make up for this poor voltage performance, the LaGrande series capacitor is modeled as switching in, post-disturbence, otherwise post-transient voltage deviation at LaGrande would have exceeded 5% for this N-1 contingency. In real life, the LaGrande shunt capacitor switches in when the LaGrange 230 kV bus voltage falls below 1.0 pu for a certain number of seconds. This action is not controlled via RAS. Post-Transient Contingency #3 – BF IPC Populus-CHill-Hemingway 500 kV & Hem 500/230 Xfmr + RAS This contingency results in overloading the Midpoint 500 kV series capacitor to 135% of its 1732 Amp nominal rating (99.8% of its 2338 Amp emergency rating). Since the overload is less than the Midpoint 500 kV series capacitors emergency rating, this contingency results in acceptable performance. Refer to the table below for more information about the overloads caused by this contingency. Conclusion Three of the notable post transient contingencies resulting in more severe system stressing were noted above. These contingencies, as well as all other post-transient contingencies, result in acceptable performance. Ultimately, the results indicate that Idaho-Northwest can achieve a 3400 MW east-to- west rating simultaneous with West of Slatt at 5500 MW. Page 769 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4003 Hanford-Vantage & Hanford Caps No Violations BF 4019 CaptJack-Malin #2 & Malin 500/230 Xfmr No Violations BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 303.3 300.0 101.1% 370.0 82.0% BF 4046 John Day-Grizzly #2 & Grizzly-Malin #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 303.3 300.0 101.1% 370.0 82.0% BF 4064 CaptJack-Malin & Malin-Round Mtn #1 500 kV MALROU22 (90083) -> MALROU23 (90084) CKT 2 at MALROU22 Branch Amp 1285.3 2236.7 2199.9 101.7% 3235.5 69.1% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 307.1 300.0 102.4% 370.0 83.0% BF 4072 Grizzly-Malin #2 & Malin-Round Mtn #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 307.1 300.0 102.4% 370.0 83.0% BF 4095 Low Mon-Hanford & Hanford-Wautoma 500 kV No Violations BF 4104 Ashe-Hanford & Hanford-Wautoma 500 kV No Violations BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 300.4 300.0 100.1% 370.0 81.2% BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 300.4 300.0 100.1% 370.0 81.2% BF 4131 Slatt-John Day & John Day-Grizzly #2 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1997.9 2973.1 2900.0 102.5% 4350.0 68.3% BF 4143 (or 4134) John Day-Grizzly #1 & John Day Caps 500 kV No Violations BF 4170 John Day-Marion & John Day Caps 500 kV No Violations BF 4194 Rock Ck-John Day & Big Eddy-John Day 500 kV No Violations BF 4197 John Day-Big Eddy #1 & John Day Caps 500 kV No Violations BF 4202 John Day-Big Eddy#2 & Big Eddy-Ostrander 500 kV No Violations BF 4231 McNary-Coyote 500 kV & McNary 500/230 kV Xfmr No Violations BF 4247 Lit Goos-Low Mon #2 & Low Mon-McNary 500 kV No Violations BF 4259 Lit Goos-Low Mon #2 & Low Mon-Hanford 500 kV No Violations BF 4377 Ashe-Marion & Marion-Alvey 500 kV No Violations BF 4386 Buckley-Marion & Marion-Santiam 500 kV No Violations BF 4630 Cen Ferry-Lit Goos #1 & Lit Goos-Low Mon #1 500 kV No Violations BF 4676 Lit Goos-Low Mon & Low Mon-Ashe 500 kV No Violations BF 4775 Cen Ferry-Low Gran #1 & #2 500 kV BELL SC (40096) -> BELL BPA (40091) CKT 1 at BELL SC Branch Amp 1534.7 2290.2 2200.1 104.1% 3000.0 76.3% BF 4776 Hatwai-Low Gran & Low Gran-Cen Ferry 500 kV No Violations BF 4870 John Day-Big Eddy 500 kV & Big Eddy 500/230 kV No Violations BF 4888 Ashe-Slatt & CGS 500 kV No Violations BF 4891 Low Mon-Ashe & Ashe-Slatt 500 kV No Violations BF 4901 Low Mon-Ashe & Ashe-Hanford 500 kV No Violations BF 4940 Low Mon-Ashe & Ashe-Marion 500 kV No Violations BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 336.7 300.0 112.2% 370.0 91.0% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 336.7 300.0 112.2% 370.0 91.0% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 316.0 300.0 105.3% 370.0 85.4% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 331.3 315.0 105.2% 394.0 84.1% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 330.6 315.0 104.9% 394.0 83.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 309.2 300.0 103.1% 370.0 83.6% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1074.4 999.1 107.5% 1250.1 85.9% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1052.7 1000.1 105.3% 1250.1 84.2% BF 4957 Summer L-Malin & Summer L-Hemingway 500 kV HEMINWAY (60155) -> HEMLON11 (61956) CKT 1 at HEMINWAY Branch Amp 1310.8 2036.0 2000.1 101.8% 3464.1 58.8% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 337.2 300.0 112.4% 370.0 91.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 337.2 300.0 112.4% 370.0 91.1% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 315.5 300.0 105.2% 370.0 85.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 331.7 315.0 105.3% 394.0 84.2% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 331.0 315.0 105.1% 394.0 84.0% Page 770 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 308.4 300.0 102.8% 370.0 83.3% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1068.4 999.1 106.9% 1250.1 85.5% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1047.0 1000.1 104.7% 1250.1 83.8% BF 4959 Grizzly-Summer L & Summer L-Malin 500 kV HEMINWAY (60155) -> HEMLON11 (61956) CKT 1 at HEMINWAY Branch Amp 1310.8 2018.6 2000.1 100.9% 3464.1 58.3% BF 4996 CaptJack-Malin #1 & #2 500 kV No Violations BF 5003 Slatt-Boardman 500 kV & Slatt 500 kV Caps No Violations BF 5015 Ashe-Slatt 500 kV & Slatt 500 kV Caps No Violations BF 5018 Ashe-Slatt & Slatt-John Day 500 kV SLATT (40989) -> BUCSLA11 (90020) CKT 1 at BUCSLA11 Branch Amp 1997.9 2988.2 2900.0 103.0% 4350.0 68.7% BF 5028 Buckley-Grizzly & Grizzly-Summer Lake 500 kV No Violations BF 5040 Grizzly-John Day & Grizzly-Round Bu 500 kV No Violations BF 5043 Slatt-Coyote 500 kV & Slatt 500 kV Caps HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 305.9 300.0 102.0% 370.0 82.7% BF 5043 Slatt-Coyote 500 kV & Slatt 500 kV Caps HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 305.9 300.0 102.0% 370.0 82.7% BF 5148 Coulee-Schultz & Echo Lake-Schultz 500 kV No Violations BF 5170 Wautoma-Schultz & Schultz-Raver 500 kV No Violations BF 5179 Vantage-Schultz & Schultz-Raver #4 No Violations BF 5211 Low Mon-McNary 500 kV & McNary-John Day 500 kV No Violations BF 5250 Hanford-Wautoma#1 & Wautoma-Knight 500 kV No Violations BF 5259 Hanford-Wautoma#2 & Wautoma-Rock Ck 500 kV No Violations BF 5266 Slatt-Buckly 500 kV & Slatt 500 kV Caps No Violations BF 5339 Vantage-Schultz 500 kV & Vantage 500/230 Xfmr #1 No Violations BF 5345 Vantage-Hanford 500 kV & Vantage 500/230 Xfmr #1 No Violations BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 330.9 300.0 110.3% 370.0 89.4% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 330.9 300.0 110.3% 370.0 89.4% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 313.3 300.0 104.4% 370.0 84.7% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 307.1 300.0 102.4% 370.0 83.0% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 326.1 315.0 103.5% 394.0 82.8% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 325.4 315.0 103.3% 394.0 82.6% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1082.9 999.1 108.4% 1250.1 86.6% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1061.0 1000.1 106.1% 1250.1 84.9% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMINWAY (60155) -> HEMLON11 (61956) CKT 1 at HEMINWAY Branch Amp 1310.8 2076.7 2000.1 103.8% 3464.1 59.9% BF IPC Hemingway-Summer L 500 kV & Hemingway 500/230 Xfmr HEMLON12 (61955) -> LONGHORN (40724) CKT 1 at HEMLON12 Branch Amp 1213.3 2019.5 2000.1 101.0% 3464.1 58.3% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 329.6 300.0 109.9% 370.0 89.1% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 329.6 300.0 109.9% 370.0 89.1% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 325.2 315.0 103.2% 394.0 82.5% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 324.5 315.0 103.0% 394.0 82.4% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 304.2 300.0 101.4% 370.0 82.2% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 87.4 120.1 112.0 107.2% 146.7 81.9% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1148.4 999.1 114.9% 1250.1 91.9% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at WALAWALA Branch Amp 844.9 1124.7 1000.1 112.5% 1250.1 90.0% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 330.7 300.0 110.2% 370.0 89.4% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 330.7 300.0 110.2% 370.0 89.4% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 309.5 300.0 103.2% 370.0 83.6% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 87.4 121.6 112.0 108.5% 146.7 82.9% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 326.4 315.0 103.6% 394.0 82.8% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 325.7 315.0 103.4% 394.0 82.7% Page 771 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 303.1 300.0 101.0% 370.0 81.9% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1180.3 999.1 118.1% 1250.1 94.4% BF IPC Hem-Longhorn 500 kV & Hem 500/230 Xfmr + RAS HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1156.2 1000.1 115.6% 1250.1 92.5% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 317.4 300.0 105.8% 370.0 85.8% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 317.4 300.0 105.8% 370.0 85.8% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 266.8 308.5 300.0 102.8% 370.0 83.4% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 302.4 300.0 100.8% 370.0 81.7% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1151.1 999.1 115.2% 1250.1 92.1% BF IPC Midpoint-Hemingway 500 kV & Hemingway 500/230 Xfmr HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1127.3 1000.1 112.7% 1250.1 90.2% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 335.2 300.0 111.7% 370.0 90.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 335.2 300.0 111.7% 370.0 90.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 329.8 315.0 104.7% 394.0 83.7% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 329.1 315.0 104.5% 394.0 83.5% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTNPS Branch MVA 266.8 305.5 300.0 101.8% 370.0 82.6% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 87.4 118.8 112.0 106.1% 146.7 81.0% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1086.8 999.1 108.8% 1250.1 86.9% BF IPC Populus-CHill-Hem 500 kV & Hem 500/230 Xfmr + RAS HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1063.6 1000.1 106.3% 1250.1 85.1% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen YELOWTLP (66750) -> YELOWTLP (66755) CKT 1 at YELOWTLP Branch MVA 77.4 100.1 100.0 100.1% 112.0 89.4% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 328.4 300.0 109.5% 370.0 88.7% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 326.9 300.0 109.0% 370.0 88.4% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 326.9 300.0 109.0% 370.0 88.4% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 320.7 300.0 106.9% 370.0 86.7% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 87.4 124.4 112.0 111.1% 146.7 84.8% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 319.0 315.0 101.3% 394.0 81.0% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 318.5 315.0 101.1% 394.0 80.8% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1245.0 999.1 124.6% 1250.1 99.6% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at WALAWALA Branch Amp 844.9 1220.0 1000.1 122.0% 1250.1 97.6% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen HELLSCYN (60150) -> HURICANE (45103) CKT 1 at HELLSCYN Branch Amp 883.9 1262.7 1199.9 105.2% 1380.1 91.5% BF LH Hemingway-Longhorn 500 kV & Longhorn Gen N POWDER (60312) -> LAGRANDE (40621) CKT 1 at N POWDER Branch Amp 605.3 938.5 910.0 103.1% 1046.5 89.7% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 331.5 300.0 110.5% 370.0 89.6% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 331.5 300.0 110.5% 370.0 89.6% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 326.8 315.0 103.7% 394.0 82.9% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 306.6 300.0 102.2% 370.0 82.9% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 326.1 315.0 103.5% 394.0 82.8% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 300.2 300.0 100.1% 370.0 81.1% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 87.4 117.1 112.0 104.5% 146.7 79.8% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1129.4 999.1 113.0% 1250.1 90.3% BF LH Longhorn-Coyote & Hemingway-Longhorn 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1106.5 1000.1 110.6% 1250.1 88.5% BF LH Longhorn-Coyote 500 kV & Longhorn Gen No Violations BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 328.8 300.0 109.6% 370.0 88.9% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 328.8 300.0 109.6% 370.0 88.9% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 324.4 315.0 103.0% 394.0 82.3% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 323.8 315.0 102.8% 394.0 82.2% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 303.9 300.0 101.3% 370.0 82.1% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 87.4 117.8 112.0 105.2% 146.7 80.3% Page 772 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1162.0 999.1 116.3% 1250.1 93.0% BF LH McNary-Longhorn & Hemingway-Longhorn 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1138.3 1000.1 113.8% 1250.1 91.1% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 329.5 300.0 109.8% 370.0 89.1% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 328.0 300.0 109.3% 370.0 88.6% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 328.0 300.0 109.3% 370.0 88.6% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 321.8 300.0 107.3% 370.0 87.0% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JEFFERSN Branch MVA 87.4 124.1 112.0 110.8% 146.7 84.6% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 320.0 315.0 101.6% 394.0 81.2% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 319.4 315.0 101.4% 394.0 81.1% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1230.7 999.1 123.2% 1250.1 98.4% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at WALAWALA Branch Amp 844.9 1206.1 1000.1 120.6% 1250.1 96.5% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV HELLSCYN (60150) -> HURICANE (45103) CKT 1 at HELLSCYN Branch Amp 883.9 1248.3 1199.9 104.0% 1380.1 90.4% BF LH McNary-Longhorn & Longhorn-Coyote 500 kV N POWDER (60312) -> LAGRANDE (40621) CKT 1 at N POWDER Branch Amp 605.3 917.6 910.0 100.8% 1046.5 87.7% BF LH McNary-Longhorn 500 kV & Longhorn Gen MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1603.7 1733.2 1732.1 100.1% 2338.3 74.1% Bus: Buckley 500 kV No Violations Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 338.6 300.0 112.9% 370.0 91.5% Bus: Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 338.6 300.0 112.9% 370.0 91.5% Bus: Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 315.9 300.0 105.3% 370.0 85.4% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 333.0 315.0 105.7% 394.0 84.5% Bus: Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 332.2 315.0 105.5% 394.0 84.3% Bus: Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 308.7 300.0 102.9% 370.0 83.4% Bus: Summer Lake 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1073.2 999.1 107.4% 1250.1 85.9% Bus: Summer Lake 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1051.8 1000.1 105.2% 1250.1 84.1% Bus: Summer Lake 500 kV HEMINWAY (60155) -> HEMLON11 (61956) CKT 1 at HEMINWAY Branch Amp 1310.8 2026.7 2000.1 101.3% 3464.1 58.5% N-1: Ashe-Hanford 500 kV No Violations N-1: Ashe-Low Mon 500 kV No Violations N-1: Ashe-Marion 500 kV No Violations N-1: Ashe-Slatt 500 kV No Violations N-1: Big Eddy-Celilo 500 kV No Violations N-1: Big Eddy-John Day 500 kV No Violations N-1: Big Eddy-Knight 500 kV No Violations N-1: Big Eddy-Ostrander 500 kV No Violations N-1: Boise Bench-Brownlee #3 230 kV No Violations N-1: Brady-Antelope 230 kV + RAS No Violations N-1: Brownlee-Ontario 230 kV No Violations N-1: Buckley-Grizzly 500 kV No Violations N-1: Buckley-Marion 500 kV No Violations N-1: Buckley-Slatt 500 kV No Violations N-1: Coulee-Hanford 500 kV No Violations N-1: Coulee-Schultz 500 kV No Violations N-1: Coyote-Slatt 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 305.9 300.0 102.0% 370.0 82.7% N-1: Coyote-Slatt 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 305.9 300.0 102.0% 370.0 82.7% N-1: Drycreek-Lolo 230 kV No Violations N-1: Drycreek-N Lewiston 230 kV No Violations N-1: Drycreek-Wala Ava 230 kV No Violations Page 773 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: Dworshak-Hatwai 500 kV No Violations N-1: Dworshak-Taft 500 kV No Violations N-1: Grassland-Slatt 500 kV No Violations N-1: Grizzly-John Day #2 500 kV No Violations N-1: Grizzly-Malin 500 kV No Violations N-1: Grizzly-Ponderosa A-Summer L 500 kV No Violations N-1: Grizzly-Ponderosa B-Capt Jack 500 kV No Violations N-1: Grizzly-Round Bu 500 kV No Violations N-1: Hanford-Low Mon 500 kV No Violations N-1: Hanford-Vantage 500 kV No Violations N-1: Hanford-Wautoma 500 kV No Violations N-1: Hells Canyon-Brownlee 230 kV No Violations N-1: Hells Canyon-Walla Walla 230 kV No Violations N-1: Hemingway-Longhorn 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 328.5 300.0 109.5% 370.0 88.8% N-1: Hemingway-Longhorn 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 328.5 300.0 109.5% 370.0 88.8% N-1: Hemingway-Longhorn 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 324.2 315.0 102.9% 394.0 82.3% N-1: Hemingway-Longhorn 500 kV JEFFERSN (65850) -> JFRSNPHA (65860) CKT 1 at JFRSNPHA Branch MVA 87.4 120.5 112.0 107.6% 146.7 82.2% N-1: Hemingway-Longhorn 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 323.6 315.0 102.7% 394.0 82.1% N-1: Hemingway-Longhorn 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 303.7 300.0 101.2% 370.0 82.1% N-1: Hemingway-Longhorn 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1158.2 999.1 115.9% 1250.1 92.7% N-1: Hemingway-Longhorn 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1134.4 1000.1 113.4% 1250.1 90.7% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 331.0 300.0 110.3% 370.0 89.5% N-1: Hemingway-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 331.0 300.0 110.3% 370.0 89.5% N-1: Hemingway-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 313.3 300.0 104.4% 370.0 84.7% N-1: Hemingway-Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 307.1 300.0 102.4% 370.0 83.0% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 326.1 315.0 103.5% 394.0 82.8% N-1: Hemingway-Summer Lake 500 kV PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 325.5 315.0 103.3% 394.0 82.6% N-1: Hemingway-Summer Lake 500 kV HURICANE (45103) -> HURWAL11 (90145) CKT 1 at HURICANE Branch Amp 865.2 1085.9 999.1 108.7% 1250.1 86.9% N-1: Hemingway-Summer Lake 500 kV HURWAL11 (90145) -> WALAWALA (45327) CKT 1 at HURWAL11 Branch Amp 844.9 1064.0 1000.1 106.4% 1250.1 85.1% N-1: Hemingway-Summer Lake 500 kV HEMINWAY (60155) -> HEMLON11 (61956) CKT 1 at HEMINWAY Branch Amp 1310.8 2074.9 2000.1 103.7% 3464.1 59.9% N-1: Hemingway-Summer Lake 500 kV HEMLON12 (61955) -> LONGHORN (40724) CKT 1 at HEMLON12 Branch Amp 1213.3 2016.4 2000.1 100.8% 3464.1 58.2% N-1: Horse Hv-McNary 230 kV No Violations N-1: John Day-Marion 500 kV No Violations N-1: John Day-Rock Ck 500 kV No Violations N-1: John Day-Slatt 500 kV No Violations N-1: Knight-Wautoma 500 kV No Violations N-1: LaGrande-North Powder 230 kV No Violations N-1: Lit Goose-Central Ferry 500 kV No Violations N-1: Lit Goose-Low Mon 500 kV No Violations N-1: Longhorn-Coyote 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 301.9 300.0 100.6% 370.0 81.6% N-1: Longhorn-Coyote 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 301.9 300.0 100.6% 370.0 81.6% N-1: Low Gran-Central Ferry 500 kV No Violations N-1: Low Mon-McNary 500 kV No Violations N-1: Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 305.6 300.0 101.9% 370.0 82.6% N-1: Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 305.6 300.0 101.9% 370.0 82.6% Page 774 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-1: McNary 500/230 kV Xfmr No Violations N-1: McNary-Board T1 230 kV No Violations N-1: McNary-John Day 500 kV No Violations N-1: McNary-Longhorn 500 kV No Violations N-1: McNary-Ross 345 kV No Violations N-1: McNary-Roundup 230 kV No Violations N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 311.7 300.0 103.9% 370.0 84.2% N-1: Midpoint-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 311.7 300.0 103.9% 370.0 84.2% N-1: Ontario-Caldwell 230 kV No Violations N-1: Ostrander-Knight 500 kV No Violations N-1: Ostrander-Pearl 500 kV No Violations N-1: Ostrander-Troutdale 500 kV No Violations N-1: Oxbow-Brownlee #2 230 kV No Violations N-1: Oxbow-Lolo 230 kV No Violations N-1: Ponderosa A 500/230 kV Xfmr No Violations N-1: Ponderosa B 500/230 kV Xfmr No Violations N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 302.5 300.0 100.8% 370.0 81.7% N-1: Populus-Cedar Hill-Hemingway 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 302.5 300.0 100.8% 370.0 81.7% N-1: Populus-Cedar Hill-Hemingway 500 kV MIDPOINT (60240) -> MIDHEM11 (61988) CKT 1 at MIDHEM11 Branch Amp 1603.7 2372.2 1732.1 137.0% 2338.3 101.4% N-1: Populus-Cedar Hill-Hemingway 500 kV POPULUS (67790) -> BORPOP11 (61970) CKT 1 at POPULUS Branch Amp 1014.8 1551.8 1492.7 104.0% 2264.2 68.5% N-1: Rock Ck-Wautoma 500 kV No Violations N-1: Roundup-Lagrande 230 kV No Violations N-1: Schultz-Vantage 500 kV No Violations N-1: Schultz-Wautoma 500 kV No Violations N-1: Slatt 500/230 kV Xfmr No Violations N-1: Vantage 500/230 kV Xfmr #1 No Violations N-1: Vantage 500/230 kV Xfmr #2 No Violations N-1: Walla Walla-Talbot 230 kV No Violations N-1: Walla Walla-Wallula 230 kV No Violations N-2: Ashe-Marion & Ashe-Slatt 500 kV No Violations N-2: Ashe-Marion & Buckley-Marion 500 kV No Violations N-2: Ashe-Marion & Coyote-Slatt 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 311.8 300.0 103.9% 370.0 84.3% N-2: Ashe-Marion & Coyote-Slatt 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 311.8 300.0 103.9% 370.0 84.3% N-2: Ashe-Marion & Slatt-Buckley 500 kV No Violations N-2: Ashe-Marion & Slatt-John Day 500 kV No Violations N-2: Ashe-Slatt & Coyote-Slatt 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 310.1 300.0 103.4% 370.0 83.8% N-2: Ashe-Slatt & Coyote-Slatt 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 310.1 300.0 103.4% 370.0 83.8% N-2: Ashe-Slatt & McNary-John Day 500 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Chemawa 230 kV No Violations N-2: Big Eddy-Ostrander 500 kV & Big Eddy-Troutdale 230 kV No Violations N-2: Boise Bench-Brownlee #1 & #2 230 kV No Violations N-2: Boise Bench-Brownlee #3 & Boise Bench-Horseflat#4 230 kV No Violations N-2: Brownlee-Hells Canyon & Oxbow-Lolo 230 kV No Violations N-2: Brownlee-Oxbow & Brownlee-Hells Canyon 230 kV No Violations N-2: Buckley-Marion & John Day-Marion 500 kV No Violations Page 775 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: Coulee-Hanford & Hanford-Vantage 500 kV No Violations N-2: Coulee-Schultz #1 & #2 500 kV No Violations N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 339.9 300.0 113.3% 370.0 91.9% N-2: DC-BIPOLE HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 339.9 300.0 113.3% 370.0 91.9% N-2: DC-BIPOLE PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO PS Branch MVA 290.2 333.1 315.0 105.8% 394.0 84.6% N-2: DC-BIPOLE PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO PS Branch MVA 290.2 332.4 315.0 105.5% 394.0 84.4% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 358.4 300.0 119.5% 370.0 96.9% N-2: Double Palo Verde HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 358.4 300.0 119.5% 370.0 96.9% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 2 at PINTO Branch MVA 290.2 364.5 315.0 115.7% 394.0 92.5% N-2: Double Palo Verde PINTO (66225) -> PINTO PS (66235) CKT 1 at PINTO Branch MVA 290.2 363.1 315.0 115.3% 394.0 92.2% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 1 at H ALLEN Branch MVA 296.7 371.1 357.0 104.0% 415.9 89.2% N-2: Double Palo Verde H ALLEN (18001) -> H ALLEN (18019) CKT 2 at H ALLEN Branch MVA 296.7 371.1 357.0 104.0% 415.9 89.2% N-2: Double Palo Verde CHOLLA (14000) -> CHOSAG11 (14014) CKT 1 at CHOSAG11 Branch Amp 978.9 1079.7 1026.0 105.2% 1538.1 70.2% N-2: Double Palo Verde ROBINSON (64885) % Δ Volts 1.026 0.973 -5.17% N-2: Double Palo Verde GONDER (64310) % Δ Volts 1.016 0.963 -5.22% N-2: Double Palo Verde HA PS (18002) % Δ Volts 0.99 0.938 -5.25% N-2: Double Palo Verde ROBINSON (64895) % Δ Volts 1.081 1.024 -5.27% N-2: Double Palo Verde GONDER (64056) % Δ Volts 1.022 0.968 -5.28% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 304.1 300.0 101.4% 370.0 82.2% N-2: Grizzly-Malin & Grizzly-Captain Jack 500 kV MALSUM12 (90086) -> MALSUM11 (90085) CKT 1 at MALSUM11 Branch Amp 1823.8 2781.2 2700.0 103.0% 4000.0 69.5% N-2: Grizzly-Malin & Grizzly-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 300.4 300.0 100.1% 370.0 81.2% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV BRDRTWN (64018) -> BRDRTNPS (64017) CKT 1 at BRDRTWN Branch MVA 266.8 317.8 300.0 105.9% 370.0 85.9% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HIL TOP (64058) -> HIL TOP (40537) CKT 1 at HIL TOP Branch MVA 260.8 310.3 300.0 103.4% 370.0 83.9% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 306.4 300.0 102.1% 370.0 82.8% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 306.4 300.0 102.1% 370.0 82.8% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV CAPPON16 (90142) -> CAPPON15 (90141) CKT 1 at CAPPON15 Branch Amp 1092.7 2475.2 2400.0 103.1% 3800.0 65.1% N-2: Grizzly-Malin & Malin-Summer Lake 500 kV CAPPON12 (90138) -> CAPPON11 (90137) CKT 1 at CAPPON11 Branch Amp 1081.0 2458.4 2400.0 102.4% 3800.0 64.7% N-2: Hanford-Ashe & Hanford-Low Mon 500 kV No Violations N-2: Hanford-Wautoma #1 & #2 500 kV No Violations N-2: Hells Canyon-Brownlee & Oxbow-Lolo 230 kV No Violations N-2: John Day-Big Eddy #1 & #2 500 kV No Violations N-2: John Day-Big Eddy & John Day-Marion 500 kV No Violations N-2: John Day-Grizzly #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 307.5 300.0 102.5% 370.0 83.1% N-2: John Day-Grizzly #1 & #2 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 307.5 300.0 102.5% 370.0 83.1% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 303.8 300.0 101.3% 370.0 82.1% N-2: John Day-Grizzly #2 & Buckley-Grizzly 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 303.8 300.0 101.3% 370.0 82.1% N-2: John Day-Marion & Buckley-Marion 500 kV No Violations N-2: John Day-Marion & Marion-Pearl 500 kV No Violations N-2: John Day-Rock Creek 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & McNary-Ross 345 kV No Violations N-2: Knight-Ostrander 500 kV & Midway-Bonneville 230 kV No Violations N-2: Lower Granite-Central Ferry #1 & #2 500 kV BELL SC (40096) -> BELL BPA (40091) CKT 1 at BELL SC Branch Amp 1534.7 2290.2 2200.1 104.1% 3000.0 76.3% N-2: McNary-John Day & Rock Creek-John Day 500 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 301.9 300.0 100.6% 370.0 81.6% N-2: McNary-John Day & Rock Creek-John Day 500 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 301.9 300.0 100.6% 370.0 81.6% N-2: McNary-John Day 500 kV & McNary-Horse Heaven 230 kV No Violations Page 776 of 776 Appendix N5 – 16la1sa_lh_3400idnw_4500wom_5500wos Base Case Post-Transient Contingency Results Contingency Studied Element Overloaded Violation Type Pre Cont. Value Post Cont. Value Limit A % Limit A Limit B % Limit B or % Δ Volts N-2: McNary-John Day 500 kV & McNary-Ross 345 kV No Violations N-2: McNary-Ross 345 kV & McNary-Horse Heaven 230 kV No Violations N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 1 at H ALLEN Branch MVA 291.5 311.8 300.0 103.9% 370.0 84.3% N-2: Midpoint-Summer Lake 500 kV & Midpoint-King 230 kV HA PS (18002) -> H ALLEN (18001) CKT 2 at H ALLEN Branch MVA 291.5 311.8 300.0 103.9% 370.0 84.3% N-2: Schultz-Wautoma & Vantage-Schultz 500 kV No Violations N-2: Sickler-Schultz & Schultz-Vantage 500 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Midway-Big Eddy 230 kV No Violations N-2: Wautoma-Rock Ck 500 kV & Springcreek-Big Eddy 230 kV No Violations