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HomeMy WebLinkAbout20240816Application (Redacted).pdf RECEIVED Friday, August 16, 2024 IDAHO PUBLIC UTILITIES COMMISSION _ ROCKY MOUNTAIN 1407 W.North Temple,Suite 330 POWER. Salt Lake City,UT 84116 A DIVISION OF PACIFICORP August 16, 2024 VIA ELECTRONIC FILING Idaho Public Utilities Commission 11331 W. Chinden Blvd. Building 8 Suit 201A Boise, ID 83714 Attn: Commission Secretary RE: CASE NO. PAC-E-24-10 IN THE MATTER OF THE APPLICATION OF ROCKY MOUNTAIN POWER REQUESTING A PRUDENCY DETERMINATION ON DEMAND SIDE MANAGEMENT EXPENDITURES. Please find enclosed for filing in the above captioned matter Rocky Mountain Power's Application requesting an order designating its demand side management expenses as prudently incurred for 2022 and 2023 program years. Informal questions related to this matter may be directed to me at(801) 220-4214. Sincerely, —fit✓ I ��c� Michael S. Snow Manager, Regulatory Affairs Enclosures Joseph M. Dallas, (ISB# 10330) Senior Attorney PacifiCorp 825 NE Multnomah, Suite 2000 Portland, Oregon 97232 Telephone: (503) 813-5701 Email: j seph.dallasgpacificorp.com Attorney for Rocky Mountain Power BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION IN THE MATTER OF THE APPLICATION ) OF ROCKY MOUNTAIN POWER ) CASE NO. PAC-E-24-10 REQUESTING A PRUDENCY ) DETERMINATION ON DEMAND-SIDE ) APPLICATION MANAGEMENT EXPENDITURES. ) COMES NOW,Rocky Mountain Power, a division of PacifiCorp (the"Company"), in accordance with Order No. 32788 and Rule of Procedures 052 and 201, et. seq., and hereby respectfully applies to the Idaho Public Utilities Commission(the"Commission") for an order designating Rocky Mountain Power's demand side management ("DSM") expenditures utilizing collections from Schedule 191 for program years 2022 and 2023 in the amount of $9,102,982 as prudently incurred("Application"). In support of this Application, Rocky Mountain Power states as follows: 1. Rocky Mountain Power is authorized to do and is doing business in the state of Idaho as a public utility providing retail electric service to approximately 91,000 customers. Rocky Mountain Power is a public utility subject to the jurisdiction of the Commission pursuant to Idaho Code § 61-129. APPLICATION OF Page 1 ROCKY MOUNTAIN POWER 2. The Company presents the 2022 and 2023 annual energy efficiency and peak reduction reports ("Annual Reports"),' results of program cost effective analyses,' and third- party program evaluations.3 BACKGROUND 3. The Company has offered a variety of DSM programs to its customers since the 1970s. All of the DSM programs offered by Rocky Mountain Power in Idaho have been designed to be cost effective. On March 2, 2006, the Commission approved an enhanced set of DSM programs and cost recovery of them through the Customer Efficiency Services Rate Adjustment("Schedule 191"), which was applied to customers' bills beginning May 1, 2006. 4. This Application and the 2022 and 2023 Annual Reports are consistent with the Memorandum of Understanding the Company entered into in Case No. GNR-E-12-01, and approved by Order No. 32788 ("MOU"). Pursuant to this MOU, Rocky Mountain Power filed energy efficiency and peak reduction reports with the Commission for program years 2022 and 2023 under Case No. PAC-E-05-10. These reports follow the format set forth in the MOU and evaluate DSM program performance, including expenditures, savings, and cost effectiveness. 5. During 2022 and 2023, the Company's DSM portfolio, funded through Schedule 191, consisted of four energy efficiency programs and two load management programs, excluding Irrigation Load Control. These programs offered incentives for a wide variety of energy efficiency measures to the Company's residential, business and agricultural 1 The 2022 and 2023 Annual Reports were filed with the Commission on April 28, 2023, and May 15, 2024, respectively,are available on the Commission's website under Case No.PAC-E-05-10. 2 See Appendix A and Confidential Appendix B of the 2022 and 2023 Annual Reports. 3 Published program evaluations are available under the"Reports and Program Evaluations by State"section of the Company's website at the following URL: hiips://www.pacificorp.com/environment/demand-side-management.html. APPLICATION OF Page 2 ROCKY MOUNTAIN POWER customers, as well as incentives for participating in load management events. The Company continues to work with customers and the Commission to provide a comprehensive suite of DSM programs that provide the greatest opportunity for participation by all customer sectors. 6. DSM programs offered by the Company provide a wide range of services and financial incentives to assist customers with energy efficiency projects they wish to pursue. During the 2022-2023 period, the Company administered the following programs funded through Schedule 191: Energy Efficiency Programs: • Schedule 21 —Low Income Weatherization/Low Income Education("LIW") • Schedule 118—Residential Energy Efficiency("Wattsmart Homes") • Schedule 140—Non-Residential Energy Efficiency("Wattsmart Business") • Home Energy Reports ("HER") - not tariffed Load Management Programs: • Schedule 114—Wattsmart Battery Demand Response • Schedule 114—Commercial and Industrial Demand Response PROGRAM EXPENDITURES 7. The Company requests a Commission determination that the DSM expenditures utilizing collections from Schedule 191 totaling $9,102,982, which represents $4,194,713 for 2022 and $4,908,269 for 2023, were prudent and in the public interest. The expenditures submitted in this Application represent the activities that took place during program years 2022 and 2023 through a year-end cost true-up process,and excludes the Company's Irrigation Load Control("ILC")program expenditures given that ILC program expenditures are not recovered through Schedule 191. 8. The Company reports its Schedule 191 balancing account quarterly to Commission Staff. For added convenience, the 2022 and 2023 balancing account activity is provided in Tables 1 and 2 below. APPLICATION OF Page 3 ROCKY MOUNTAIN POWER Table 1 —2022 Schedule 191 Balancing Account Activity Monthly Monthly net Cash Basis Accrual Basis Program Month Accrued Rate Recovery CarryingAccumulated Accumulated Costs—Fixed Costs Charge Balance Balance Assets Dec-21 $(524,625.27) $(180,721.23) Jan-22 $327,923.72 $14,044.29 $(319,840.29) $(434.00) $(516,975.84) $(159,027.51) Feb-22 $336,012.49 $(93,313.90) $(321,764.98) $(425.00) $(503,153.33) $(238,518.90) Mar-22 $300,307.84 $20,670.41 $(311,828.19) $(424.00) $(515,097.68) $(229,792.84) Apr-22 $264,066.95 $(14,539.92) $(274,750.24) $(434.00) $(526,214.97) $(255,450.05) May-22 $244,838.29 $(25,842.19) $(301,291.34) $(462.00) $(583,130.02) $(338,207.29) Jun-22 $484,327.85 $(9,874.01) $(473,610.69) $(481.00) $(572,893.86) $(337,845.14) Jul-22 $159,101.61 $227,719.21 $(745,493.57) $(722.00) $(1,160,007.82) $(697,239.89) Aug-22 $375,877.06 $(225,052.17) $(669,823.93) $(1,089.00) $(1,455,043.69) $(1,217,327.93) Sep-22 $146,416.71 $201,211.43 $(576,706.31) $(1,392.00) $(1,886,725.29) $(1,447,798.10) Oct-22 $551,233.72 $(183,570.21) $(369,081.95) $(1,496.00) $(1,706,069.52) $(1,450,712.54) Nov-22 $515,336.99 $477,049.97 $(361,834.60) $(1,358.00) $(1,553,925.13) $(821,518.18) Dec-22 $508,879.63 $(456,373.76) $(439,466.49) $(1,266.00) $(1,485,777.99) h$,(1,209,744.80) 2022 Totals $4,214,322.86 $(67,870.85) $(5,165,492.58) $(9,983.00) Table 2 —2023 Schedule 191 Balancing Account Activity Monthly Monthly net Carrying Cash Basis Accrual Basis Month Program Costs Charge Rate Recovery Accumulated Accumulated —Fixed Assets Accrued Costs e Balance Balance Dec-22 $(1,485,777.99) $(1,209,744.80) Jan-23 $335,845.03 $(4,944.28) $(417,659.96) $(2,544.00) $(1,570,136.92) $(1,299,048.01) Feb-23 $92,196.00 $35,678.27 $(405,668.81) $(2,878.00) $(1,886,487.73) $(1,579,720.55) Mar-23 $431,167.03 $119,098.01 $(372,821.15) $(3,096.00) $(1,831,237.85) $(1,405,372.66) Apr-23 $360,315.59 $(171,487.46) $(339,269.32) $(3,035.00) $(1,813,226.58) $(1,558,848.85) May-23 $438,700.25 $22,094.16 $(308,458.54) $(2,914.00) $(1,685,898.87) $(1,409,426.98) Jun-23 $454,837.16 $(36,360.24) $(462,821.89) $(2,816.00) $(1,696,699.60) $(1,456,587.95) Jul-23 $276,886.70 $334,724.91 $(825,080.60) $(3,285.00) $(2,248,178.50) $(1,673,341.94) Aug-23 $426,287.69 $(434,239.03) $(746,797.02) $(4,014.00) $(2,572,701.83) $(2,432,104.30) Sep-23 $319,894.62 $177,074.12 $(565,638.92) $(4,493.00) $(2,822,939.13) $(2,505,267.48) Oct-23 $967,383.70 $(161,590.21) $(387,635.28) $(4,222.00) $(2,247,412.71) $(2,091,331.27) Nov-23 $313,990.72 $117,417.39 $(422,979.85) $(3,837.00) $(2,360,238.84) $(2,086,740.01) Dec-23 $359,162.87 $2,632,884.78 $(350,036.68) $(3,926.00) $(2,355,038.65) $551,344.96 2023 Totals $4,776,667.36 $2,630,350.42 $(5,604,868.02) $(41,060.00) DSM SAVINGS AND COST EFFECTIVENESS 9. The annual energy efficiency portfolio savings achieved through the Company's Schedule 191 DSM programs were 16,017 MWh in 2022 and 18,812 MWh for APPLICATION OF Page 4 ROCKY MOUNTAIN POWER 2023,measured at generation and first-year savings. The Wattsmart Battery Demand Response program achieved 47 kW in 2022 and 619 kW in 2023. The Wattsmart Commercial and Industrial Demand Response program was implemented in 2023, but did not have any called events as the program was ramping up. 10. The Company examines its programs from all cost effective tests, including the PacifiCorp Total Resource Cost ("PTRC"), Total Resource Cost ("TRC"), Utility Cost Test ("UCT"), Ratepayer Impact Measure ("RIM"), and Participant Cost Test ("PCT") at the measure category: program-level, sector-level and portfolio-level. Pursuant to Commission Order No. 33766,issued May 18,2017,the Company uses the UCT as the primary determinant for cost effectiveness. However,the Low Income Weatherization program still uses the PTRC test authorized by Commission Order No. 32788, issued April 12, 2013. 11. In 2022 and 2023, the energy efficiency portfolio as a whole was cost effective from the UCT perspective. Tables 3 and 4 below summarize the cost effective results from the 2022-2023 period. As avoided costs are considered proprietary, the cost effectiveness results for load control programs are provided with a "pass" designation, which equates to a benefit to cost ratio of 1.0 or better. Additional cost effectiveness details for the Company's DSM programs can be found in Appendix A and Confidential Appendix B to the 2022 and 2023 Annual Reports. Table 3 —2022 Cost Effectiveness Results Program Benefit/Cost Test PTRC C UCT PCT RIM Irrigation Load Control Program PASS PASS PASS PASS PASS Battery Control Program (20-year NPV) PASS PASS PASS PASS PASS Energy Efficiency Portfolio 1.07 0.97 1.31 3.19 0.42 Energy Efficiency Portfolio(exc. LIW) 1.07 0.97 1.35 3.27 0.43 Wattsmart Business 1.14 1.03 1.19 2.83 0.47 Residential Energy Efficiency Portfolio(inc. NEI) 1.21 1.11 1.36 4.31 0.36 Residential Energy Efficiency Portfolio(exc. NEI) 1.10 1.00 1.36 4.26 0.36 APPLICATION OF Page 5 ROCKY MOUNTAIN POWER Low Income Weatherization 0.95 0.93 0.20 1.30 0.16 Home Energy Reporting 4.02 3.65 3.65 n/a ?.58 Wattsmart Homes 1.03 0.94 1.32 4.15 .34 Table 4-2023 Cost Effectiveness Results ir Program Benefit/Cost Test PTRC TRC UCT PCT RIM Irrigation Load Control Program PASS PASS PASS PASS PASS Battery Control Program (20-year NPV) PASS PASS PASS PASS PASS Energy Efficiency Portfolio 0.97 0.88 1.31 2.60 0.42 Energy Efficiency Portfolio(exc. LIW) 0.98 0.89 1.43 2.55 0.43 Wattsmart Business 1.09 0.99 1.72 2.45 0.47 Residential Energy Efficiency Portfolio(inc. NEI) 1.43 1.36 0.73 4.37 0.30 Residential Energy Efficiency Portfolio(exc. NEI) 0.77 0.70 0.73 3.39 3.39 Low Income Weatherization(inc. NEI) 6.79 6.75 0.17 11.88 0.13 Home Energy Reporting 6.32 5.75 5.75 n/a 0.55 Wattsmart Homes 0.54 0.49 0.68 2.31 0.27 As reflected above,the Low Income Weatherization program did not pass the PTRC in 2022, but did pass the PTRC in 2023. As reflected in Table 4, the Wattsmart Homes program received a UCT result of 0.68 for 2023. The majority of the savings achieved in 2023 came through the transportation measure category,which is exclusively engine block heater controls. Poor realization rates in this measure category are the primary driver to the low overall cost benefit results in the 2023 Wattsmart Homes Program. The engine block heater control measure was evaluated in 2023 and measure updates took place in early 2024. The program is also working to diversify participation throughout the measure categories, specifically HVAC and Whole Building, to improve cost effectiveness results. ENERGY EFFICIENCY TARGETS 12. Table 5 below is a comparison of the Company's energy efficiency portfolio performance with the achievable technical potential identified in the Company's conservation potential assessment ("CPA") and the IRP selections over the 2022-2023 period. Consistent with the Northwest Power and Conservation Council's regional power plans, the Company's APPLICATION OF Page 6 ROCKY MOUNTAIN POWER CPA uses acquisition ramp rates and assumes that 85 percent of the technical potential is achievable over 20 years to account for real world constraints affecting the acquisition of energy efficiency resources. Absent the achievability assumption and ramp rates, all discretionary resources (those that can technically be acquired at any time)would be available at the start of the planning period, which is unrealistic from both a planning and acquisition standpoint. Table 5—Energy Efficiency, Achievable Technical Potential, & IRP Selections Source of Savings" Idaho MWh Savings atgenerator) 2022 2023 2022-2023 Total Achievable Technical Potential 47,484 70,310 117,794 Integrated Resource Plan Selections 12,824 12,000 24,824 Energy Efficiency Portfolio Performance 10,544 12,528 23,072 (excluding Home Energy Reports) Energy Efficiency Portfolio Performance 16,017 18,812 34,829 (including Home Energy Reports) 13. As shown in Table 5, from 2022 through 2023 the Company achieved 23,072 MWh of energy efficiency savings in Idaho, excluding savings from Home Energy Reports, equating to 93 percent of the 24,824 MWh selected by the IRP. IRP savings are based on assumed typical acquisition rates,whereas actual program performance can fluctuate from year to year based on factors such as economic conditions and the timing of large project completions. LOW INCOME AUDITS 14. The Company's Low Income Energy Conservation Education program is administered by two partner agencies, Eastern Idaho Community Action Partnership ("EICAP")and Southeastern Idaho Community Action Agency("SEICAA").Due to reporting 4 Achievable Technical Potential and IRP selections are from the 2019/2021 DSM Potential Study and 2019/2021 IRP Update. APPLICATION OF Page 7 ROCKY MOUNTAIN POWER discrepancies for program expenditures and energy savings kit inventory for years 2020-2021, and pursuant to Order No. 35814 issued May 13, 2023 in Case No. PAC-E-22-12, the Commission directed the Company to conduct in-house audits of EICAP and SEICAA, and discuss the findings in its next prudency filing. Accordingly, The Company's Low Income Program Manager conducted in-house audits in the fall of 2023. The visits occurred September 27, 2023 with EICAP, and September 28, 2023 with SEICAA. The audits focused on review of existing tracking mechanisms, kits inventory verification, and the development and/or improvement of tracking mechanisms. 15. At the time of the audits, both agencies had exhausted energy savings kit inventory and were in the process of ordering or awaiting shipment of new kits. EICAP had an established tracking report in their database for kits and expenditures,which has been in place for several years. EICAP's in-house audit did not disclose any findings requiring corrective action. Due to personnel changes and the departure of staff overseeing the conservation education program, SEICAA's in-audit was inconclusive. SIECAA researched through available tracking records in an attempt to reconcile kit inventory,however due to a lack of kit inventory tracking records for the years 2020 through 2022 to validate inventory counts, a completed reconciliation was impracticable. SEICAA confirmed there were nine remaining kits at the end of 2022 calendar year and kits were distributed prior to the in-house audit in fall 2023. The funding balance and expenditures were reconciled. 16. The Company used the in-house audits to work closely with EICAP and SIECAA to establish a uniform tracking mechanism to be utilized by both agencies for ongoing program tracking and reporting. Also, to monitor funding and kits inventory closely, agencies will provide quarterly program reports versus annual reports in 2024, with reporting cadence APPLICATION OF Page 8 ROCKY MOUNTAIN POWER re-evaluated at the end of 2024 calendar year. A Low Income Conservation Education Report for Calendar Year 2020 through the first quarter of 2024 was provided as Appendix F to the 2023 Annual Report. REVISED 2022 ANNUAL REPORT 17. Attached to this Application as Exhibit A is a Revised 2022 Annual Report. The Company's previously submitted 2022 Annual Report inadvertently excluded savings and expenditure details for the Irrigation Load Control and Wattsmart Battery programs in Table 3. The Revised 2022 Annual Report includes these details. The Revised 2022 Annual Report also includes additional details for the Wattsmart Battery program in Table 11, and added a program evaluation section at the end. No changes were made to the 2022 Annual Report Appendices,but are included with the Revised 2022 Report for convenience. PROGRAM EVALUATIONS 18. Evaluations are conducted using best-practice approaches and techniques including those outlined in the National Action Plan for Energy Efficiency Program Impact Evaluation and the California Evaluation Framework guides. The Company conducts process and/or impact evaluations to ensure the ongoing cost effective of its energy efficiency programs through validation of energy savings and to provide information to assist in program management. 19. Process evaluations assess program delivery,from design to implementation,in order to identify efficiencies, including identifying what worked, what did not work, constraints, and potential improvements. Identifying opportunities for improvement is essential to making corrections along the way. APPLICATION OF Page 9 ROCKY MOUNTAIN POWER 20. Impact evaluations determine the impacts(e.g.energy and demand savings)that directly result from a program. They also support analyses of cost effectiveness aimed at identifying relative program costs and benefits. 21. Evaluations are based on credible and transparent methods focused on successfully capturing the savings created by the programs. Evaluations develop retrospective estimates of energy savings attributable to a program. While retrospective in nature, the information obtained will be used to inform future potential assessments, plans, forecasts and targets. 22. Process and impact evaluations for the Wattsmart Business 2020-2021, Home Energy Reports 2020-2021, and Low Income Weatherization 2018-2019 programs were published during the 2022-2023 prudency timeframe and included in the 2022 and 2023 Annual Reports.5 MODIFIED PROCEDURE 23. The Company believes that consideration of the proposals contained in this Application do not require an evidentiary proceeding, and accordingly requests that this Application be processed under modified procedure pursuant to RP 201-204,which allows for consideration of these issues by written submissions rather than by an evidentiary hearing. If, however,the Commission determines that an evidentiary proceeding is required,the Company stands ready to provide supporting testimony. 5 See Tables 13 and 14 from the 2022 and 2023 Annual Reports,respectively. APPLICATION OF Page 10 ROCKY MOUNTAIN POWER COMMUNICATIONS AND SERVICE OF PLEADINGS 24. Communications regarding this Application should be addressed to: Mark Alder Michael Snow 1407 W.North Temple, Suite 330 Salt Lake City, Utah 84116 Telephone: (801) 220-2313 (801) 220-4214 Email: mark.alder(a�pacificorp.com michael.snowkpacificorp.com Joseph Dallas 825 NE Multnomah, Suite 2000 Portland, Oregon 97232 Telephone: (503) 813-5701 Email:joseph.dallaskpacificorp.com In addition, the Company respectfully requests that all data requests regarding this matter be addressed to one or more of the following: By e-mail (preferred) datarequest(&,pacificorp.com By regular mail Data Request Response Center PacifiCorp 825 NE Multnomah, Suite 2000 Portland, OR 97232 CONFIDENTIAL INFORMATION 25. This filing, specifically Appendices B and C to the 2022 Revised Annual Report, contain confidential information including trade secret and other Company confidential information exempt from public review under Idaho Code §§ 74-104-109 and Idaho Public Utilities commission's Rule of Procedure 67. APPLICATION OF Page 11 ROCKY MOUNTAIN POWER REQUEST FOR RELIEF 26. WHEREFORE, for the reasons set forth above Rocky Mountain Power respectfully requests that the Commission approve this Application by: (1) issuing an order authorizing that this matter be processed by Modified Procedure; and (2) issuing a final order designating Rocky Mountain Power's 2022 and 2023 total DSM expenditures of$9,102,982 as prudently incurred. DATED this 16th day of August 2024. Respectfully submitted, By v °` Joseph M. Dallas Senior Attorney PacifiCorp 825 NE Multnomah, Suite 2000 Portland, Oregon 97232 Telephone: (503) 813-5701 Email: joseph.dallas(&,pacificorp.com Attorney for Rocky Mountain Power APPLICATION OF Page 12 ROCKY MOUNTAIN POWER EXHIBIT A _ ROCKY MOUNTAIN POWER POWERING YOUR GREATNESS r 2022 IDAHO Energy Efficiency and Peak Reduction Annual Report Issued 51112023 Updated August 2024 Rocky Mountain Power 1407 West North Temple Salt Lake City, UT 84116 pacificorp.com/environment/demand-side-management Page 1 of 19 TABLE OF CONTENTS EXECUTIVESUMMARY.................................................................................................................................3 REGULATORY ACTIVITIES.............................................................................................................................4 MEETINGS WITH COMMISSION STAFF........................................................................................................5 PORTFOLIO OF PROGRAMS .........................................................................................................................6 ENERGY EFFICIENCY PROGRAMS.................................................................................................................6 WATTSMART HOMES................................................................................................................................. 6 HOME ENERGY REPORTS PROGRAM .............................................................................................................. 7 LOW INCOME WEATHERIZATION ................................................................................................................... 8 WATTSMART BUSINESS PROGRAM...........................................................................................................10 WATTSMART BUSINESS.................................................................................................................................10 PEAK REDUCTION PROGRAMS...................................................................................................................12 IRRIGATION LOAD CONTROL.....................................................................................................................12 WATTSMART BATTERIES...............................................................................................................................13 EXPENDITURES ...........................................................................................................................................14 TOTAL ENERGY EFFICIENCY PORTFOLIO SAVINGS AND EXPENDITURES ..........................................................14 GROSS SAVINGS BY MEASURE CATEGORY................................................................................................14 LOAD CONTROL EVENTS.............................................................................................................................16 COST EFFECTIVENESS..................................................................................................................................17 TOTAL COST EFFECTIVENESS RESULTS BY PORTFOLIO AND PROGRAM...........................................................17 Page 2of19 EXECUTIVE SUMMARY Rocky Mountain Power is a multi-jurisdictional electric utility providing retail service to customers in Utah, Idaho, and Wyoming. Rocky Mountain Power, a division of PacifiCorp, serves approximately 86,874 customers in southeastern Idaho. Rocky Mountain Power acquires energy efficiency and peak reduction resources as cost-effective alternatives to the acquisition of supply- side resources. PacifiCorp develops an integrated resource plan (IRP)l as a means of balancing cost, risk, uncertainty, supply reliability/deliverability and long-run public policy goals. The IRP presents a framework of future actions to ensure that Rocky Mountain Power continues to provide reliable, reasonably priced service to customers. Energy Efficiency and peak management opportunities are incorporated into the IRP based on their availability, characteristics, and costs.' Rocky Mountain Power employs external implementers to administer its energy efficiency and peak reductions programs.' Evaluations for each program are performed by independent external evaluators to validate energy and demand savings derived from Rocky Mountain Power's programs.4 Rocky Mountain Power utilizes earned media, customer communications, education, and outreach advertising as well as program specific marketing to communicate the value of energy efficiency, provide information regarding low-cost, no-cost energy efficiency measures and to educate customers on the availability of programs, services, and incentives.' This report provides details on program results and activities for the reporting period from January 1, 2022, through December 31, 2022. Rocky Mountain Power on behalf of its customers, invested $4.19 million in energy efficiency and peak reduction resource acquisitions during the reporting period utilizing collections from Electric Service Schedule 191, Customer Efficiency Services Rate Adjustment ("Schedule 191"). The investment yielded approximately 16 megawatt hours ("MWh")at generator in first-year energy savings,and approximately 3 megawatts(UMW") of capacity reduction from energy efficiency. Net benefits based on the projected value of the energy savings over the life of the individual measures is estimated at $1.4 million.' 1 Information on PacifiCorp's IRP can be found at https://www.pacificorp.com/energy/integrated-resource- plan.html. Z Information on PacifiCorp's planning process can be found at https://www.pacificorp.com/environment/demand- side-management.html under the"Rocky Mountain Power planning"section. 3 Information on program administration can be found at https://www.pacificorp.com/environment/demand-side- management.html under the"Program administration"section. 4 Information on program evaluations can be found at https://www.pacificorp.com/environment/demand-side- management.html under the"Reports and program evaluations by state"section. S Information on communications and outreach can be found at https://www.pacificorp.com/environment/demand- side-management.html under the"Communications and outreach"section. 6 See cost effectiveness Appendix A, UCT Net Benefits exc. LIM Page 3of19 The energy efficiency portfolio was cost effective based on the Utility Cost Test (UCT), which is the primary cost benefit test observed in Idaho. Cost-effectiveness results are provided in Table 12 and Appendix A. In 2022, Rocky Mountain Power's DSM portfolio included the following programs: • Energy Efficiency Programs: ■ Wattsmart Homes ■ Home Energy Reports ■ Low Income Weatherization ■ Wattsmart Business ■ Peak Reduction Program: ■ Irrigation Load Control ■ Wattsmart Batteries Pursuant to Commission Order No. 32196, the Idaho Irrigation Load Control Program is treated as a system power supply with expenses flowing through base rates in lieu of the Schedule 191 DSM tariff rider. Notwithstanding, information on the Irrigation Load Control Program is provided in this report. REGULATORY ACTIVITIES During the 2022 reporting period, the Company filed compliance and/or informational reports, updates, notices, and requests with the Commission in support of Company DSM programs. The following is a list of those activities: • On January 6, 2022,the Company filed its reply comments in the matter of the Company's application for authority to implement a battery demand response program, Case No. PAC-E-21-16. The Commission issued Order No. 35370 approving the Company's application on April 14, 2022. • On January 24, 2022, the Company filed an application for authority to revert the Blue- Sky block value to 100 kilowatt hours from 200 kilowatt hours in Case No. PAC-E-22-02. The Commission issued Order No. 35362 approving the Company's application on April 1, 2022. • On January 24, 2022, the Company filed an application for authority to increase Electric Service Schedule 191 — Customer Efficiency Services Rate in Case No. PAC-E-22-03. The Commission issued Order No. 35363 rejecting the Company's application on April 1, 2022. • On January 24, 2022, consistent with the flexible tariff process, a 45-day notice of changes was posted to the Company website. Changes consisted of adjustments to incentives for heat pumps, HVAC, and engine block heater control offerings. • On February 3, 2022, the Company circulated the DSM balancing account report for the fourth quarter of 2021. Page 4 of 19 • On April 22, 2022, the Company submitted a compliance filing in the matter of the Company's application for authority to implement a battery demand response program, Case No. PAC-E-21-16. • On April 27, 2022,the Company submitted a second compliance filing in the matter of the Company's application for authority to implement a battery demand response program, Case No. PAC-E-21-16. • On May 2, 2022, pursuant to Order No. 29976, the Company submitted its $.4M Idaho Energy Efficiency and Peak Reduction Annual Report in Case No. PAC-E-05-10. • On May 3, 2022, the Company circulated the DSM balancing account report for the first quarter of 2022. • On July 8, 2022,the Company filed an application for authority to increase Electric Service Schedule 191 — Customer Efficiency Services Rate in Case No. PAC-E-22-10. The Commission issued Order No. 35546 approving the Company's application on September 29, 2022. • On August 2, 2022, the Company circulated the DSM balancing account report for the second quarter of 2022. • On August 17, 2022, the Company filed an application requesting a prudency determination on DSM expenditures for years 2020-2021 in Case No. PAC-E-22-12. • On August 25, 2022,the Company filed an application in Case No. PAC-E-22-13 requesting authority to implement a commercial and industrial demand response program. • On November 11, 2022, the Company circulated the DSM balancing account report for the third quarter of 2022. • On December 21, 2022, the Company circulated its 2023 communications plans with Commission Staff. MEETINGS WITH COMMISSION STAFF The Company consulted with Idaho Public Utilities Commission Staff throughout 2022, with formal presentations on the following matters: June 7, 2022 • Discussed the Company's 2021 Idaho Energy Efficiency and Peak Reduction Annual Report. • Reviewed the 2022 Year-to-Date Status and forecast. • Reviewed the status of the Schedule 191 balancing account. • Discussed the Company's Wattsmart Business Demand Response Application; and • Discussed the new battery demand response program tracking and reporting metrics. Page 5of19 PORTFOLIO OF PROGRAMS ENERGY EFFICIENCY PROGRAMS WATTSMART HOMES Program Description The Wattsmart Homes program is designed to provide access to incentives for using more efficient products and services installed or received by residential customers in the following housing types: ■ New Construction Homes ■ Single Family Existing Homes ■ Multi-family Housing Units ■ Manufactured Homes The program applies to residential customers under Electrical Service Schedules 1 or 36. Landlords who own rental property where the tenant is billed under Electric Service Schedules 1 or 36 also qualify. The Wattsmart Homes program passed the UCT cost tests with a benefit cost ratio of 1.32 for 2022. Program Performance and Major Achievements in 2022 ■ The Wattsmart Homes program generated 2,728,468 kWh savings at the site. ■ Disbursed $233,033 in incentives. ■ The program updated offerings for central air conditioners, smart thermostats, evaporative coolers,ductless heat pumps,air source heat pumps, and engine block heater controls homes. ■ The program also discontinued Wattsmart starter kits. Additional information on the program administration can be found on the Company's website under the Program administration section: https://www.pacificorp.com/environment/demand-side-management.html Direct Link to Wattsmart Homes program administration: https://www.pacificorp.com/content/dam/pcorp/documents/en/pacificorp/environment/dsm/idaho/ld aho Program Administration Wattsmart Homes 22.pdf Page 6of19 HOME ENERGY REPORTS PROGRAM Program Description The Home Energy Reports program is a behavioral program designed to decrease participant energy usage by providing comparative energy usage data for similar homes located in the same geographical area. Additionally, the report provides the participants with tips to decrease their energy usage. The Home Energy Reports program passed the UCT with a cost benefit ratio of 3.65 for 2022. Program Performance and Major Achievements in 2022 ■ Total savings for 2022 in MWh was 5,018, which equates to 5,018,450 in kWh savings. ■ In 2022 reports were initially provided to approximately 28,000, which was expanded to 41,000 customers in July 2022. ■ Report highlights o Individual recommendations to save energy o Insights on how customers are using energy by appliance type o Home characteristics included in report with easy access to update home profile o Monthly usage history included in reports ■ Online portal was improved to provide greater insights for all residential customers. ■ In 2022, only 0.29% of customers (190 customers) have requested to be removed from the program. Additional information on the program administration can be found on the Company's website under the Program administration section: https://www.pacificorp.com/environment/demand-side-management.html Direct Link to Home Energy Reports program administration: https://www.pacificorp.com/content/dam/pcorp/documents/en/pacificorp/environment/dsm/idaho/ld aho Program Administration Home Energy Reports 22.pdf Page 7 of 3.9 LOW INCOME WEATHERIZATION Program Description The Low-Income Weatherization program provides energy efficiency services through a partnership between the Company and local non-profit agencies to residential customers who meet the income-eligible guidelines.Services are provided at no cost to the program participants. The Company contracts with Eastern Idaho Community Action Partnership, Inc. ("EICAP") and Southeastern Idaho Community Action Agency ("SEICAA") to provide services. The two agencies receive federal funds allocated to and administered by the Idaho Department of Health and Welfare ("IDHW"). Energy efficiency measures are installed in the homes of income eligible households throughout the Company's service territory by EICAP and SEICAA. The Company is required to fund 85 percent of the cost of approved measures, pursuant to Commission Order No. 32151. Under Advice No. 19-01 filed with Idaho Public Utilities Commission on January 16, 2019, Commission approved reimbursement of up to 100% of related installed costs of ductless heat pumps, effective March 6, 2019. Agencies cover remaining costs with the funding received by IDHW. The Low-Income Weatherization program did not pass the PTRC with a cost benefit ratio of 0.9S for 2022. Under direction of Case No. GNR-E12-01, Low Income Weatherization program uses the 10 percent conservation adder to the total resource cost test as its primary cost test. Cost- effectiveness was partially affected by the use a single-family heat pump load profile in lieu of a single-family cooling load profile to value the timing of energy savings.Several measures installed through the program save energy throughout the year and not just the summer months, therefore a heat pump load profile was selected to reflect energy savings in non-summer months. Program Performance and Major Achievements in 2022 ■ In 2022, the program achieved savings at site of 31,995 ■ Number of homes served 27 Low Income Energy Conservation Education Commission Order No. 32788 authorized the Company to fund the Low-Income Energy Conservation Education with $25,000 annually. These education services are provided by EICAP and SEICAA and target participants who receive Low Income Home Energy Assistance Program ("LIHEAP") funds. EICAP received $16,000 program year ("PY") 2022 funding by the beginning of their 2022/2023 LIHEAP program year. SEICAA did not request funds in 2022 as they had funds from PY 2019 and PY 2021 to spend. SEICAA did not purchase kits as they had inventory of kits purchased in 2019 to distribute. COVID-19 restrictions in operations slowed the distribution of kits in PY 2020 and PY 2021 and increased in PY 2022 Page 8 of 19 The agencies provided a conservation education curriculum to households and reported the following activities and program specifics for 2022 in Table 1 below. Table 1 2022 Conservation Education Activities EICAP SEICAA Annual Funds $ 16,000.00 $ 0.00 Expenditures $ 21,674.71 $ 0.00 Balance as of 12/31/22 $ 30,194.04 $ 20,250.00 Households Served 608 45 Distribution EICAP purchased 500 kits using PY 2022 funds. The new kits include two 9W LED bulbs, a LED night light, a window insulation kit, a wall plate thermometer, a refrigerator thermometer, a freezer thermometer, five foam light switch sealing gaskets, five foam electrical outlet sealing gaskets, a furnace whistle, one 2pk wool dyer balls, a faucet aerator, and one shower timer As of December 31, 2022, EICAP has 610 kits in their inventory. EICAP's program objective was to educate Rocky Mountain Power customers on how to conserve energy through useful tips and tools to help them save year-round. They served Rocky Mountain Power households that received energy assistance and/or requested energy conservation education. SEICAA did not purchase kits in PY2022 and intends to utilize remaining PY2019 funds combined with the PY2020 and PY2021 funding to purchase new kits as well as reserve some of the funds for postage and professional fees. Table 2 below provides information regarding the education offered by the agencies. Table 2 Additional Information on Conservation Education by Agencies EICAP SEICAA Program Design Educate Rocky Mountain Power Reduce electricity usage and customers about how to monthly bills for participants of conserve energy. the LIHEAP program. Target Audience Rocky Mountain Power LIHEAP recipients who have not customers who receive Low received weatherization program Income Home Energy Assistance services as a priority. Households Heat (LIHEAP) Heat and Crisis . can also be identified through SEICAA's other programs. Page 9of19 EICAP SEICAA How Company Funds used to purchase energy Plan to utilize funds to purchase Funds Were Used efficiency kits in August 2022 and kits in PY 2023 and for shipping for shipping of kits. of kits. Additional information on the program administration can be found on the Company's website under the Program administration section: https://www.pacificorp.com/environment/demand-side-management.html Direct Link to Low Income Weatherization program administration: https://www.pacificorp.com/content/dam/pcorp/documents/en/pacificorp/environment/dsm/idaho/ld aho Program Administration Low Income 22.pdf WATTSMART BUSINESS PROGRAM WATTSMART BUSINESS Program Description The commercial, industrial, and agricultural energy efficiency program portfolio is offered through a single Non-Residential Energy Efficiency program called Wattsmart Business. Wattsmart Business is designed to influence new and existing non-residential customers to increase the efficiency of electric energy usage both through the installation of efficient equipment as well as adoption of improved energy management protocols. Qualifying measures include those which produce verifiable electric energy efficiency improvements compared to an established baseline. Wattsmart Business offerings include: ■ Typical Upgrades ■ Midstream/Instant incentives ■ Custom Analysis ■ Energy Management ■ Energy Project Manager Co-funding The Wattsmart Business program passed the UCT with a cost benefit analysis of 1.49. Page 10 of 19 Program Performance and Major Achievements in 2022 ■ In 2022, the program achieved gross energy savings at site of 6,940,859 kWh. ■ Distributed incentives of$863,132. ■ To foster continued growth and utilization of the Wattsmart Business Vendor Network (WBVN) and to increase customer satisfaction,the Company continued to employ full- time outreach specialist dedicated to Idaho. This staff member provides an outreach and support role to both vendors and customers interested in lighting as well as non- lighting incentives. ■ In 2022, participating WBVN vendors continued receiving quarterly vendor performance scorecards to provide timely feedback and encourage vendors to strive to reach "Premium" status, which entitles qualifying vendors to improved visibility and enhanced co-branding with Rocky Mountain Power. In 2022, there were three premium status Wattsmart Business Vendors. ■ Several challenges presented themselves in 2022 leading to lower savings in the Wattsmart Business Program than in years past. o Significant supply chain disruptions had a negative effect on program energy savings achievements. o Due to supply timelines and project lifecycles, there were no large energy savings projects completed in CY 2022 by the largest industrial customers within the utility service territory. The Company expects this to be rectified in 2023 through focused outreach efforts began in 2022. Additional information on the program administration can be found on the Company's website under the Program administration section: https://www.pacificorp.com/environment/demand-side-management.htmI Direct Link to Wattsmart Business program administration: https://www.pacificorp.com/content/dam/pcorp/documents/en/pacificorp/environment/dsm/idaho/ld aho Program Administration NonResidential 22.pdf Page 11 of 19 PEAK REDUCTION PROGRAMS IRRIGATION LOAD CONTROL Program Description The irrigation load control program is offered to irrigation customers receiving electric service on Schedule 10, Irrigation and Soil Drainage Pumping Power Service. Participants enroll in the program with a third-party administrator and allow the curtailment of their electricity usage in exchange for an incentive. Customer incentives are based on the site's average available load during load control program hours, adjusted by optouts or non-participation. For most participants, their irrigation pumps are set up with a dispatchable two-way control system giving Rocky Mountain Power control over their loads. Participants are notified four hours ahead of control events and have the choice to opt-out of a limited number of dispatch events per season. The Irrigation Load control program passed the UCT cost test for 2022. Program Performance and Major Achievements in 2022 ■ There were 17 load control events initiated in 2022. There were 8 mandatory and 9 voluntary events. ■ The available load from the Irrigation Program can be utilized as reserves which provides value to the program and benefits the customer. ■ Customers were given a 20% incentive bonus for participation in general. ■ Total customers participating in the program are 154, participation sites 1,091. ■ Total enrolled MW (Gross -at Gen) in 2022 is 169, maximum realized MW (at Gen) is 137. Additional information on the program administration can be found on the Company's website under the Program administration section: https://www.pacificorp.com/environment/demand-side-management.html Direct Link to Irrigation Load Control program administration: https://www.pacificorp.com/content/dam/pcorp/documents/en/pacificorp/environment/dsm/idaho/ld aho Program Administration Irrigation Load Control 22.pdf Page 12 of 19 WATTSMART BATTERIES Program Performance and Major Achievements in 2022 • Rocky Mountain Power called upon the batteries for a total of 40 minutes which equates to less than one battery cycle being used by Rocky Mountain Power during 2022. • All customer batteries enrolled in the program prior to the called events responded. There were no battery communication failures. • New customer enrollment with batteries and new solar only installs during the same period • No commercial batteries were enrolled in the program during 2022. • During 2022 there were 486 new customers interconnected with solar with seven customers completing the enrollment process into the Wattsmart Battery Program. The enrollment application for customer generation versus the enrollment in Wattsmart Batteries is a separate unique process. It is expected many of the solar enrollments will eventually enroll in the battery program. Program Description The Wattsmart Batteries program promotes and incentivizes the installation of qualified individual batteries for system-wide integration and use for overall electric grid management. Leveraging batteries has created an opportunity to maximize renewable energy for advancing a sustainable electric grid. The batteries may be used for frequency response, peak load management, transmission relief, daily load cycling, and other smart grid applications. Batteries participating in the Wattsmart Battery Program are integrated within PacifiCorp's Energy Management System to provide real-time grid benefits Eligible customers who participate in the program receive an enrollment incentive based on the kW size of their battery and participation commitment, and ongoing annual incentives for continued participation. The battery program passed the UCT test using a 20-year NPV because the net benefits exceeded the program costs, however, did not pass using the 1-year NPV. This is primarily due to the program having high upfront incentives and limited participation during the first year of the program. Program enrollment information can be found on the Company's website: www.rockymountainpower.net/battery Page 13 of 19 EXPENDITURES TOTAL PORTFOLIO SAVINGS AND EXPENDITURES Table 3 Program Results for January 1,2022—December 31, 20227 Load Management Programs kW/Yr.Savings kW/Yr.Savings Program (at site) (at gen) Expenditures Irrigation Load Control 125,370 136,718 $ 3,602,414 Wattsmart Batteries 43 47 $ 43,030 Total Load Management 125,413 136,765 $ 3,645,444 Energy Efficiency Programs kWh/Yr.Savings kWh/Yr.Savings Program (at site) (at gen) Expenditures Low Income Weatherization 31,995 34,894 $ 147,975 Home Energy Reporting 5,018,450 5,473,172 $ 87,603 Wattsmart Homes 2,728,468 2,975,695 $ 808,180 Total Residential 7,778,913 8,483,761 $ 1,043,758 Total Wattsmart Business 6,940,859 7,533,097 $ 2,678,130 Total Energy Efficiency 14,719,772 16,016,858 $ 3,721,888 Other Portfolio Expenditures Commercial&Industrial Evaluation Costs $ 160,361 Residential Evaluation Costs $ 49,508 Outreach&Communications $ 119,099 Potential Study $ 88,184 System Support $ 12,643 Total Other Portfolio Expenditures $ 429,795 Total Idaho Portfolio Expenditures $ 7,797,127 Total Idaho Portfolio Expenditures excluding Irrigation Load Control $ 4,194,713 GROSS SAVINGS BY MEASURE CATEGORY Table 4 2022 Annual Savings by Wattsmart Homes Measure Category Total kWh(at Site) Total Incentive Total Measure Quantity Appliances 2,591 $ 1,205 39 Building Shell 14,124 $ 5,505 9,520 Electronics 1,159 $ 285 34 Energy Kits 51,135 $ 2,579 408 HVAC 209,605 $ 37,713 187 Lighting 3,777 $ 611 11 Water Heating 26,359 $ 8,700 15 'The energy efficiency reported savings are gross,ex-ante. The values at generation include line losses between the customer site and the generation source. Page 14 of 19 Measure Category Total kWh(at Site) Total Incentive Total Measure Quantity Whole Building 66,610 $ 20,625 67 Transportation 2,353,107 $ 155,819 1,527 Grand Total 2,768,468 $ 233,033 Table 5 Low Income Homes Served and Measures Installed Measure Type Installed Air Sealed/Infiltration 24 Insulation 65 Attic Ventilation 12 Lighting CFL/LED 27 Furnace Repair or Replacement 14 Duct Sealing and/or Insulation 2 Ductless Heat Pump 0 Thermal Doors and/or Window Replacement 28 Water Heater Repair 14 Total Number of Homes Served 27 Total kWh Savings @ Site 31,995 Table 6 Wattsmart Business Savings by Sector Sector Total kWh (at Site) Total Incentive Commercial 4,403,907 $ 572,708 Industrial 663,671 $ 29,071 Irrigation 1,874,091 $ 261,352 Grand Total 6,940,859 $ 863,132 Table 7 2022 Annual Net Savings by Wattsmart Business Measure Category Total kWh(at Site) Total Incentive Total Projects ruig Shell 11,946 $ 2,830 2 essed Air 433,569 $ 35,279 2 Management 536,431 $ 10,729 3 HVAC 912,310 $ 176,169 25 Irrigation 2,279,371 $ 302,636 146 Lighting 1,957,959 $ 245,851 276 Motors 392,413 $ 18,139 1 Refrigeration 91,384 $ 3,127 3 Wastewater 325,477 $ 48,822 1 Energy Project Manager Co-Funding - $ 19,551 1 Grand Total 6,940,859 $ 863,132 460 Page 15 of 19 LOAD CONTROL EVENTS Table 8 Irrigation Load Control Events$ Date Event Times Estimated Load Reduction at Gen(MW) 7/7/2022 1 7:00 PM—9:00 PM MDT 136 7/8/2022 2 5:00 PM—9:00 PM MDT 121 7/28/2022 3 5:00 PM—9:00 PM MDT 97 7/29/2022 4 5:00 PM—8:00 PM MDT 89 8/15/2022 5 5:00 PM—9:00 PM MDT 48 8/16/2022 6 7:00 PM—9:00 PM MDT 61 8/17/2022 7 7:00 PM—9:00 PM MDT 66 8/18/2022 8 7:00 PM—9:00 PM MDT 66 8/30/2022 9 7:00 PM—9:00 PM MDT 47 8/31/2022 10 6:00 PM—9:00 PM MDT 29 9/1/2022 11 6:00 PM—9:00 PM MDT 69 9/2/2022 12 6:00 PM—9:00 PM MDT 66 9/3/2022 13 6:00 PM—9:00 PM MDT 27 9/4/2022 14 6:00 PM—9:00 PM MDT 29 9/5/2022 15 6:00 PM—9:00 PM MDT 26 9/6/2022 16 6:00 PM—9:00 PM MDT 56 9/7/2022 17 6:00 PM—9:00 PM MDT 60 Table 9 Irrigation Load Program Performance Maximum Potential MW(at Site) 154 Maximum Potential MW(Gross—at Gen) 169 Average Realized Load MW(at Gen) 64 Maximum Realized Load MW(at Gen) 137 Participation Customers 154 Participation(Sites) 1,091 Table 10 Battery Control Events Event Date Mountain Time E%m—nt 'W kW Residential or Reason for Event Start/End Time achieved Commercial lAugus7t22,2022 5:29 PM to 5:34 PM 11 Residential Frequency Response gust 25,2022 4:52 PM to 4:57 PM 14 Residential Frequency Response September 2,2022 5:08 PM to 5:13 PM 14 Residential Frequency Response September 18,2022 12:07 PM to 12:12 PM 19 Residential Frequency Response September 20,2022 2:25 PM to 2:30 PM 19 Residential Frequency Response October 10,2022 9:16 AM to 9:21 AM 19 Residential Frequency Response October 29,2022 9:24 PM to 9:29 PM 24 Residential Frequency Response October 31,2022 9:52 PM to 9:57 PM 24 Residential Frequency Response a(v) =voluntary events Page 16 of 19 Table 11: Battery Control Program Performance Maximum Potential kW(at Site) 43 Maximum Potential kW(at Gen) 47 Total Participating Batteries 9 COST EFFECTIVENESS —OTAL COST EFFECTIVENESS RESULTS BY PORTFOLIO AND PROGRAM Program cost effectiveness is performed using a Company specific modeling tool, created by a third-party consultant. The tool is designed to incorporate PacifiCorp data and values such as avoided costs, and generally follows the methodology specified in California's Standard Practice Manual. The analysis assesses the costs and benefits of DSM resource programs from different stakeholder perspectives, including participants and non-participants, based on four tests described in the Standard Practice Manual (TRC, UCT, PCT and RIM) as well as an additional fifth test, PTRC. Each of the cost-effectiveness tests for Rocky Mountain Power's programs is outlined below. The primary cost/benefit test observed in Idaho is the UCT for all programs other than the Low- Income Weatherization program, which uses the PTRC.9 • PacifiCorp Total Resource Test (PTRC) is the total resource cost test with an additional 10% added to the net benefit side of the benefit/cost formula to account for non- quantified environmental and non-energy benefits of conservation resources over supply side alternatives. • Total Resource Cost (TRC) Test considers the benefits and costs from the perspective of all utility customers, comparing the total costs and benefits from both the utility and utility customer perspectives. • Utility Cost (UCT) Test also called the program administrator cost test, provides a benefit to cost perspective from the utility only. The test compares the total utility cost incurred to the benefit/value of the energy and capacity saved and contains no customer costs or benefits in calculation of the ratio. • Participant Cost Test (PCT) compares the portion of the resource paid directly by participants to the savings realized by the participants. • Ratepayer Impact Cost Test (RIM) examines the impact of energy efficiency expenditures on non-participating ratepayers overall. Unlike supply-side investments, energy efficiency programs reduce energy sales. Reduced sales typically lower revenue requirements while putting near-term upward pressure on the rates remaining fixed costs are spread over fewer kilowatt-hours. 9 Under direction of Case No. GNR-E-12-01, Low Income Weatherizotion program uses the 10 percent energy conservation adder to the total resource cost test. Page 17 of 19 Table 12 2022 Cost-Effectiveness Results by Programlo Program Benefit/Cost Test" PTRC TRC UCT PCT RIM Irrigation Load Control PrograM12 PASS PASS PASS PASS PASS Battery Control Program(20-year NPV) PASS PASS PASS PASS PASS Energy Efficiency Portfolio 1.07 0.97 1.31 3.19 0.42 Energy Efficiency Portfolio(exc. LIW) 1.07 0.97 1.35 3.27 0.43 Wattsmart Business 1.14 1.03 1.19 2.83 0.47 Residential Energy Efficiency Portfolio(inc. NEI) 1.21 1.11 1.36 4.31 0.36 Residential Energy Efficiency Portfolio(exc. NEI) 1.10 1.00 1.36 4.26 0.36 Low Income Weatherization13 0.95 0.93 0.20 1.30 0.16 Home Energy Reporting 4.02 3.65 3.65 n/a 0.58 Wattsmart Homes 1.03 0.94 1.32 4.15 0.34 Portfolio-level cost effectiveness includes portfolio costs, such as the Potential Assessment and DSM system database. Sector-level cost effectiveness, reported in the Residential and Non- Residential sections of this report, includes sector-specific evaluation, measurement, and verification expenditures. The Company includes quantifiable non-energy impacts at the portfolio and residential level, as well as the Wattsmart Homes and Low-Income Weatherization program level. EVALUATIONS Evaluations are performed by independent external evaluators to validate energy and demand savings derived from the Company's energy efficiency programs. Industry best practices are adopted by the Company with regards to principles of operation, methodologies, evaluation methods, and protocols including those outlined in the National Action Plan for Energy Efficiency Program Impact Evaluation and the California Evaluation Framework guides. A component of the overall evaluation efforts is aimed at the reasonable verification of installations of energy efficient measures and associated documentation through review of documentation, surveys and/or ongoing onsite inspections. Verification of the potential to achieve savings involves regular inspection and commissioning of equipment. The Company engages in programmatic verification activities, including inspections, quality assurance reviews, and tracking checks and balances as part of routine program 10 Cost-effectiveness memo detail is provided in Appendix A. 11 The Low-Income Weatherization and Wattsmart Homes programs include non-energy impacts. 1z A"Pass" designation equates to a benefit cost ratio of 1.0 or better. 13 Low-Income Weatherization conservation education funding is excluded from the program level cost- effectiveness testing but is included in the portfolio and residential sector cost-effectiveness. Page 18 of 19 implementation and may rely upon these practices in the verification of installation information for the purposes of savings verifications in advance of more formal impact evaluation results. Evaluation, measurement,and verification tasks are segregated within the Company organization to ensure they are performed and managed by personnel who are not directly responsible for program management. Information on evaluation activities completed or in progress during 2022 are summarized in the chart below. Completed evaluation reports are available at the following link, under the "Reports and program evaluations by state" section: https://www.pacificorp.com/environment/demand-side-management.html Table 13: Evaluations Completed 2022 Evaluation Responsible Status Published Consultant 2020 Wattsmart Business Program Evaluation Cadmus Completed 2022 Page 19 of 19 Appendix A APPENDIX Appendix A: Energy Efficiency Cost-effectiveness Results' 1 Cost-effectiveness results were generated by Applied Energy Group(AEG) using the approved Cost-effectiveness methodologies. '0AEG APPLIED ENERGY GROUP MEMORANDUM To: Alesha Mander, PacifiCorp From: Andrew Cottrell, Andy Hudson, Elizabeth Applegate, AEG Date: April 21, 2023 Re: PacifiCorp Idaho Portfolio and Sector Level Cost-Effectiveness Results(including Low-Income) — PY2022 AEG estimated the cost-effectiveness of PacifiCorp's overall energy efficiency portfolio in the state of Idaho based on Program Year (PY) 2022 costs and savings estimates provided by PacifiCorp. This memo provides cost- effectiveness results at the portfolio and sector levels. The portfolio (including NEBs) passes the PacifiCorp Total Resource Cost Test (PTRC), Utility Cost Test (UCT), and the Participant Cost Test (PCT). This memo provides analysis inputs and results in the following tables: • Table 1: Cost-Effectiveness Analysis Inputs • Table 2: Portfolio Level Costs, Nominal - PY2022 • Table 3: Benefit/Cost Ratios by Portfolio Type • Table 4: 2022 Total Portfolio Cost-Effectiveness Results (Including NEBs) • Table 5: 2022 Total Portfolio Cost-Effectiveness Results (Without NEBs) • Table 6: 2022 C&I Energy Efficiency Sector Cost-Effectiveness Results • Table 7: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Including NEBs) • Table 8: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Without NEBs) • Table 9: 2022 Low Income NEBs • Table 10: 2022 Home Energy Savings NEBs by Measure The following assumptions were utilized in the analysis: Avoided Costs: Hourly values provided by PacifiCorp based on the 2021 Integrated Resource Plan (IRP) Preferred Portfolio, converted into annual values using Idaho load shapes from the same IRP. Modeling Inputs: measure savings, costs, measure lives, incentive levels, and portfolio costs were based on estimates provided by PacifiCorp. Other Economic Assumptions: Discount rate, line loss, retail rate, and inflation rate values were provided by PacifiCorp and are presented in Table 1 below. Applied Energy Group,Inc. I appliedenergygroup.com 1 I Tables 1 and 2 below summarize cost-effectiveness assumptions for the PacifiCorp Idaho energy efficiency portfolio. All costs and impacts are presented at the portfolio level. Table 1: Cost-Effectiveness Analysis Inputs Parameter Value Discount Rate 6.88% Residential Line Loss 9.06% Commercial Line Loss 8.59% Industrial Line Loss 3.83% Irrigation Line Loss 9.05% Residential Energy Rate* ($/kWh) $0.10 Commercial Energy Rate* ($/kWh) $0.09 Industrial Energy Rate* ($/kWh) $0.07 Irrigation Energy Rate* ($/kWh) $0.09 Inflation Rate 2.16% Table 2: Portfolio Level Costs, Nominal-PY20221 Category PY2022 C&I Evaluation Costs $160,361 Residential Evaluation Costs $49,508 Low Income Energy Conservation $0 Education Outreach &Communications $119,099 Potential Study $88,184 System Support $12,643 Total $429,795 Tables 3 through 8 present the cost-effectiveness results at the portfolio and sector levels. Tables 9 and 10 present NEBs impacts for the low income and HES programs. 1 To align with annual budget expectations,cost-effectiveness inputs are presented in nominal dollars. Applied Energy Group,Inc. I appliedenergygroup.com 2 Table 3: Benefit/Cost Ratios by Portfolio Type Program PTRC TRC UCT PCT RIM Total Portfolio (Including NEBs) 1.07 0.97 1.31 3.19 0.42 Total Portfolio 1.04 0.95 1.31 3.18 0.42 Commercial & Industrial 1.14 1.03 1.49 2.83 0.47 Residential (Including NEBs) 1.21 1.11 1.36 4.31 0.36 Residential 1.10 1.00 1.36 4.26 0.36 Table 4: 2022 Total Portfolio Cost-Effectiveness Results (Including NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test(PTRC) $0.06 $5,723,386 $6,110,602 $387,216 1.07 + Conservation Adder Total Resource Cost Test(TRC) $0.06 $5,723,386 $5,569,203 ($154,183) 0.97 No Adder Utility Cost Test (UCT) $0.05 $4,151,607 $5,422,114 $1,270,508 1.31 Participant Cost Test (PCT) $3,115,004 $9,941,112 $6,826,108 3.19 Rate Impact Test (RIM) $12,832,197 $5,422,114 ($7,410,083) 0.42 Lifecycle Revenue Impacts ( 0.00034 $/kWh) Discounted Participant Payback 2.51 (yea rs) Table 5: 2022 Total Portfolio Cost-Effectiveness Results (Without NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.06 $5,723,386 $5,955,388 $232,002 1.04 + Conservation Adder Total Resource Cost Test (TRC) $0.06 $5,723,386 $5,413,989 ($309,397) 0.95 No Adder Utility Cost Test (UCT) $0.05 $4,151,607 $5,422,114 $1,270,508 1.31 Participant Cost Test (PCT) $3,115,004 $9,897,549 $6,782,545 3.18 Rate Impact Test(RIM) $12,832,197 $5,422,114 ($7,410,083) 0.42 Lifecycle Revenue Impacts ( 0.00034 $/kWh) Discounted Participant Payback 2.51 (years) Applied Energy Group,Inc. I appliedenergygroup.com 3 11 Table 6: 2022 C&I Energy Efficiency Sector Cost-Effectiveness Results Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.06 $3,876,580 $4,403,018 $526,438 1.14 + Conservation Adder Total Resource Cost Test (TRC) $0.06 $3,876,580 $4,002,744 $126,164 1.03 No Adder Utility Cost Test (UCT) $0.04 $2,678,130 $4,002,744 $1,324,614 1.49 Participant Cost Test (PCT) $2,357,332 $6,672,963 $4,315,631 2.83 Rate Impact Test(RIM) $8,487,961 $4,002,744 ($4,485,218) 0.47 Lifecycle Revenue Impacts ( 0.00034 $/kWh) Discounted Participant Payback 4.58 (years) Table 7: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Including NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.05 $1,417,012 $1,707,584 $290,573 1.21 + Conservation Adder Total Resource Cost Test (TRC) $0.05 $1,417,012 $1,566,460 $149,448 1.11 No Adder Utility Cost Test (UCT) $0.04 $1,043,682 $1,419,371 $375,689 1.36 Participant Cost Test (PCT) $757,672 $3,268,148 $2,510,476 4.31 Rate Impact Test(RIM) $3,914,441 $1,419,371 ($2,495,070) 0.36 Lifecycle Revenue Impacts ( 0.00010 $/kWh) Discounted Participant Payback 1.04 (years) Table 8: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Without NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.05 $1,417,012 $1,552,370 $135,359 1.10 + Conservation Adder Total Resource Cost Test (TRC) $0.05 $1,417,012 $1,411,246 ($5,766) 1.00 No Adder Utility Cost Test (UCT) $0.04 $1,043,682 $1,419,371 $375,689 1.36 Participant Cost Test (PCT) $757,672 $3,224,586 $2,466,914 4.26 Rate Impact Test(RIM) $3,914,441 $1,419,371 ($2,495,070) 0.36 Lifecycle Revenue Impacts ( 0.00010 $/kWh) Discounted Participant Payback 1.04 (years) Applied Energy Group,Inc. I appliedenergygroup.com 4 Table 9: 2022 Low Income NEBs Non-Energy Benefit Program Perspective Impact Adjusted Total NEBs $117,288 PTRC,TRC Table 10: 2022 Home Energy Savings NEBs by Measure Total NEBs Total NPV Measure Name ($�yr) Quantity Measure Life Discount Rate Benefits Appliances $283 39 13.52 6.88% $2,343 Energy Kits $5,073 408 10.26 6.88% $35,583 Applied Energy Group,Inc. I appliedenergygroup.com 5 '0AEG APPLIED ENERGY GROUP MEMORANDUM To: Alesha Mander, PacifiCorp From: Andrew Cottrell, Andy Hudson, Elizabeth Applegate, AEG Date: April 21, 2023 Re: PacifiCorp Idaho Portfolio and Sector Level Cost-Effectiveness Results (without Low-Income) — PY2022 AEG estimated the cost-effectiveness of PacifiCorp's overall energy efficiency portfolio in the state of Idaho based on Program Year (PY) 2022 costs and savings estimates provided by PacifiCorp. This memo provides cost- effectiveness results at the portfolio and sector levels. The portfolio (including NEBs) passes the PacifiCorp Total Resource Cost Test (PTRC), Utility Cost Test (UCT) and the Participant Cost Test (PCT). This memo provides analysis inputs and results in the following tables: • Table 1: Cost-Effectiveness Analysis Inputs • Table 2: Portfolio Level Costs, Nominal - PY2022 • Table 3: Benefit/Cost Ratios by Portfolio Type • Table 4: 2022 Total Portfolio Cost-Effectiveness Results (Including NEBs) • Table 5: 2022 Total Portfolio Cost-Effectiveness Results (Without NEBs) • Table 6: 2022 C&I Energy Efficiency Sector Cost-Effectiveness Results • Table 7: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Including NEBs) • Table 8: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Without NEBs) • Table 9: 2022 Home Energy Savings NEBs by Measure The following assumptions were utilized in the analysis: Avoided Costs: Hourly values provided by PacifiCorp based on the 2021 Integrated Resource Plan (IRP) Preferred Portfolio, converted into annual values using Idaho load shapes from the same IRP. Modeling Inputs: measure savings, costs, measure lives, incentive levels, and portfolio costs were based on estimates provided by PacifiCorp. Other Economic Assumptions: Discount rate, line loss, retail rate, and inflation rate values were provided by PacifiCorp and are presented in Table 1 below. Applied Energy Group,Inc. I appliedenergygroup.com 1 I Tables 1 and 2 below summarize cost-effectiveness assumptions for the PacifiCorp Idaho energy efficiency portfolio. All costs and impacts are presented at the portfolio level. Table 7: Cost-Effectiveness Analysis Inputs Parameter Value Discount Rate 6.88% Residential Line Loss 9.06% Commercial Line Loss 8.59% Industrial Line Loss 3.83% Irrigation Line Loss 9.05% Residential Energy Rate* ($/kWh) $0.10 Commercial Energy Rate* ($/kWh) $0.09 Industrial Energy Rate* ($/kWh) $0.07 Irrigation Energy Rate* ($/kWh) $0.09 Inflation Rate 2.16% Table 2: Portfolio Level Costs, Nominal-PY20221 Category PY2022 C&I Evaluation Costs $160,361 Residential Evaluation Costs $49,508 Low Income Energy Conservation Education $0 Outreach &Communications $119,099 Potential Study $88,184 System Support $12,643 Total $429,795 Tables 3 through 8 present the cost-effectiveness results at the portfolio and sector levels. Table 9 presents the NEBs impacts for the Home Energy Savings program. Table 3: Benefit/Cost Ratios by Portfolio Type Program PTRC TRC UCT PCT RIM Total Portfolio (Including NEBs) 1.07 0.97 1.35 3.27 0.43 Total Portfolio 1.06 0.97 1.35 3.25 0.43 Commercial & Industrial 1.14 1.03 1.49 2.83 0.47 Residential (Including NEBs) 1.24 1.13 1.55 4.89 0.37 Residential 1.21 1.10 1.55 4.82 0.37 1 To align with annual budget expectations,cost-effectiveness inputs are presented in nominal dollars. Applied Energy Group,Inc. I appliedenergygroup.com 2 I Table 4: 2022 Total Portfolio Cost-Effectiveness Results (Including NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.06 $5,575,411 $5,970,483 $395,073 1.07 + Conservation Adder Total Resource Cost Test (TRC) $0.06 $5,575,411 $5,431,160 ($144,251) 0.97 No Adder Utility Cost Test (UCT) $0.05 $4,003,631 $5,393,234 $1,389,603 1.35 Participant Cost Test (PCT) $2,994,220 $9,784,587 $6,790,367 3.27 Rate Impact Test(RIM) $12,648,481 $5,393,234 ($7,255,247) 0.43 Lifecycle Revenue Impacts ( 0.00033 $/kWh) Discounted Participant Payback 2.43 (years) Table 5: 2022 Total Portfolio Cost-Effectiveness Results (Without NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.06 $5,575,411 $5,932,557 $357,146 1.06 + Conservation Adder Total Resource Cost Test (TRC) $0.06 $5,575,411 $5,393,234 ($182,177) 0.97 No Adder Utility Cost Test (UCT) $0.05 $4,003,631 $5,393,234 $1,389,603 1.35 Participant Cost Test (PCT) $2,994,220 $9,741,024 $6,746,804 3.25 Rate Impact Test(RIM) $12,648,481 $5,393,234 ($7,255,247) 0.43 Lifecycle Revenue Impacts ( 0.00033 $/kWh) Discounted Participant Payback 2.43 (years) Table 6: 2022 C&I Energy Efficiency Sector Cost-Effectiveness Results Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.09 $2,750,562 $2,092,100 ($658,462) 0.76 + Conservation Adder Total Resource Cost Test (TRC) $0.09 $2,750,562 $1,901,909 ($848,653) 0.69 No Adder Utility Cost Test (UCT) $0.07 $2,322,076 $1,901,909 ($420,167) 0.82 Participant Cost Test (PCT) $1,165,466 $3,782,827 $2,617,360 3.25 Rate Impact Test(RIM) $5,597,825 $1,901,909 ($3,695,916) 0.34 Lifecycle Revenue Impacts ( 0.00023 $/kWh) Discounted Participant Payback 4.05 (years) Applied Energy Group,Inc. I appliedenergygroup.com 3 11 Table 7: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Including NEBs) Levelized NPV Net Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.05 $1,269,036 $1,567,466 $298,429 1.24 + Conservation Adder Total Resource Cost Test (TRC) $0.05 $1,269,036 $1,428,417 $159,380 1.13 No Adder Utility Cost Test (UCT) $0.03 $895,707 $1,390,490 $494,784 1.55 Participant Cost Test (PCT) $636,888 $3,111,623 $2,474,735 4.89 Rate Impact Test(RIM) $3,730,725 $1,390,490 ($2,340,234) 0.37 Lifecycle Revenue Impacts ( 0.00010 $/kWh) Discounted Participant Payback 0.88 (years) Table 8: 2022 Residential Energy Efficiency Sector Cost-Effectiveness Results (Without NEBs) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Costs Net Benefits $/kWh Benefits Ratio Total Resource Cost Test (PTRC) $0.05 $1,269,036 $1,529,539 $260,503 1.21 + Conservation Adder Total Resource Cost Test (TRC) $0.05 $1,269,036 $1,390,490 $121,454 1.10 No Adder Utility Cost Test (UCT) $0.03 $895,707 $1,390,490 $494,784 1.55 Participant Cost Test (PCT) $636,888 $3,068,061 $2,431,173 4.82 Rate Impact Test(RIM) $3,730,725 $1,390,490 ($2,340,234) 0.37 Lifecycle Revenue Impacts ( 0.00010 $/kWh) Discounted Participant Payback 0.88 (years) Table 9: 2022 Home Energy Savings NEBs by Measure Total NEBs Measure Total NPV ($/Y Measure Name ) Quantity Discount Rate r Life Benefits Appliances $283 39 13.52 6.88% $2,343 Energy Kits $5,073 408 10.26 6.88% $35,583 Applied Energy Group,Inc. I appliedenergygroup.com 4 '0AEG APPLIED ENERGY GROUP MEMORANDUM To: Alesha Mander, PacifiCorp From: Andrew Cottrell, Andy Hudson, Elizabeth Applegate, AEG Date: April 21, 2023 Re: PacifiCorp Idaho Wattsmart Homes Cost-Effectiveness Results — PY2022 AEG estimated the cost-effectiveness of PacifiCorp's overall energy efficiency portfolio in the state of Idaho based on Program Year (PY) 2022 costs and savings estimates provided by PacifiCorp. This memo provides cost- effectiveness results for the Wattsmart Homes (WSH) program. The program (including NEBs) passes the PacifiCorp Total Resource Cost Test (PTRC), Utility Cost Test (UCT) and the Participant Cost Test (PCT). This memo provides analysis inputs and results in the following tables: • Table 1: Cost-Effectiveness Analysis Inputs • Table 2: WSH Annual Program Costs, Nominal - PY2022 • Table 3: 2022 Home Energy Savings kWh Savings by Measure Category • Table 4: 2022 Benefit/Cost Ratios by Measure Category • Table 5: 2022 WSH Program Cost-Effectiveness Results (Without NEBs) • Table 6: 2022 Appliances Cost-Effectiveness Results (Without NEBs) - (Load Shape- Residential_ERWH_7P) • Table 7: 2022 Building Shell Cost-Effectiveness Results (Without NEBs) - (Load Shape - ID—Single—Family—Heat—pump) • Table 8: 2022 Electronics Cost-Effectiveness Results (Without NEBs) - (Load Shape- ID—Single Family—Plug) • Table 9: 2022 Home Energy Kits Cost-Effectiveness Results (Without NEBs) - (Load Shape Residential_LIGHTING_7P) • Table 10: 2022 HVAC Cost-Effectiveness Results (Without NEBs) (Load Shape ID—Single—Family—Heat—pump) • Table 11: 2022 Lighting Cost-Effectiveness Results (Without NEBs) (Load Shape Residential_LIGHTING_7P) Applied Energy Group,Inc. I appliedenergygroup.com 1 I • Table 12: 2022 Water Heating Cost-Effectiveness Results (Without NEBs) (Load Shape Residential_ERWH_7P) • Table 13: 2022 Whole Building Cost-Effectiveness Results (Without NEBs) (Load Shape ID—Single—Family—Heat—pump) • Table 14: 2022 Transportation Cost-Effectiveness Results (Without NEBs) (Load Shape ID—Single—Family—Heating) • Table 15: Home Energy Savings NEBs by Measure - PY2022 • Table 16: 2022 WSH Program Cost-Effectiveness Results (Including NEBs) • Table 17: Appliances Cost-Effectiveness Results (with NEBs) - PY2022 (Load Shape- Residential_ERWH_7P) • Table 18: Home Energy Kit Cost-Effectiveness Results (with NEBs) - PY2022 (Load Shape - Residential_LIGHTING_7P) The following assumptions were utilized in the analysis: Avoided Costs: Hourly values provided by PacifiCorp based on the 2021 Integrated Resource Plan (IRP) Preferred Portfolio, converted into annual values using Idaho load shapes from the same IRP. Modeling Inputs: measure savings, costs, measure lives, incentive levels, and portfolio costs were based on estimates provided by PacifiCorp. Other Economic Assumptions: Discount rate, line loss, retail rate, and inflation rate values were provided by PacifiCorp and are presented in Table 1 below. Tables 1 and 2 below summarize cost-effectiveness assumptions for the Home Energy Savings program. All costs and impacts are presented at the program and measure category level. Table 1: Cost-Effectiveness Analysis Inputs Parameter Value Discount Rate 6.88% Residential Line Loss 9.06% Residential Energy Rate ($/kWh) $0.10 Inflation Rate' 2.16% Tables 3 through 15 present the savings and cost-effectiveness results at the program and measure category levels. Tables 16 and 19 present the NEBs impacts for the WSH program and the cost-effectiveness results including NEBs at the program and measure category levels. Applied Energy Group,Inc. I appliedenergygroup.com 2 11 Table 2: WSH Annual Program Costs, Nominal-PY20221 Program Utility Program Total Utility Gross Measure Category Incentives Customer Delivery Admin Development Budget Costs Appliances $377 $13 $129 $1,205 $1,723 $3,160 Building Shell $2,052 $69 $704 $5,505 $8,331 $12,707 Electronics $168 $6 $58 $285 $517 $462 Energy Kits $4,566 $251 $2,550 $2,579 $9,945 $2,244 HVAC $30,460 $1,029 $10,451 $37,713 $79,653 $131,665 Lighting $32,539 $19 $188 $611 $33,357 $1,294 Water Heating $3,830 $129 $1,314 $8,700 $13,974 $11,728 Whole Building $9,680 $327 $3,321 $20,625 $33,953 $83,727 Transportation $341,954 $11,555 $117,321 $155,819 $626,649 $359,386 Total Program $425,627 $13,398 $136,036 $233,043 $808,104 $606,372 Table 3: 2022 Home Energy Savings kWh Savings by Measure Category Gross kWh Adjusted Net kWh Realization Gross kWh Net to Measure Measure Category Savings at Savings at Rate Savings at Gross Ratio Life Site Site Site Appliances 2,591 80% 2,073 88% 1,824 14 Building Shell 14,124 61% 8,615 88% 7,582 45 Electronics 1,159 52% 603 97% 585 5 Energy Kits 51,135 55% 28,125 87% 24,468 10 HVAC 209,605 100% 209,605 89% 186,549 13 Lighting 3,777 57% 2,153 87% 1,873 16 Water Heating 26,359 61% 16,079 99% 15,918 13 Whole Building 66,610 100% 66,610 88% 58,617 40 Transportation 2,353,107 100% 2,353,107 100% 2,353,107 10 Total Program 2,728,468 98% 2,686,970 99% 2,650,523 11 1 To align with annual budget expectations,cost-effectiveness inputs are presented in nominal dollars. Applied Energy Group,Inc. I appliedenergygroup.com 3 I Table 4: 2022 Benefit/Cost Ratios by Measure Category Measure Category PTRC TRC UCT PCT RIM Appliances 0.31 0.28 0.60 0.96 0.26 Appliances (with NEIs) 0.95 0.92 0.60 1.70 0.26 Building Shell 0.62 0.56 1.05 1.57 0.34 Building Shell (with NEIs) 0.62 0.56 1.05 1.57 0.34 Electronics 0.24 0.22 0.29 1.19 0.19 Electronics (with NEIs) 0.24 0.22 0.29 1.19 0.19 Energy Kits 1.44 1.31 1.27 10.79 0.36 Energy Kits (with NEIs) 5.14 5.01 1.27 26.65 0.36 HVAC 0.64 0.58 1.26 1.70 0.34 HVAC (with NEIs) 0.64 0.58 1.26 1.70 0.34 Lighting 0.04 0.04 0.04 2.12 0.03 Lighting (with NEIs) 0.04 0.04 0.04 2.12 0.03 Water Heating 0.56 0.51 0.62 2.12 0.28 Water Heating (with NEIs) 0.56 0.51 0.62 2.12 0.28 Water Heating 0.56 0.51 0.62 2.12 0.28 Water Heating (with NEIs) 0.56 0.51 0.62 2.12 0.28 Total 1.00 0.91 1.32 4.08 0.34 Total with NEBs 1.03 0.94 1.32 4.15 0.34 Table 5: 2022 WSH Program Cost-Effectiveness Results (Without NEBs) Levelized NPV Net Benefit/Cost Cost-Effectiveness Test NPV Costs $/kWh Benefits Benefits Ratio Total Resource Cost Test(PTRC) + $0.05 $1,181,433 $1,177,662 ($3,772) 1.00 Conservation Adder Total Resource Cost Test(TRC) No $0.05 $1,181,433 $1,070,601 ($110,832) 0.91 Adder Utility Cost Test (UCT) $0.04 $808,104 $1,070,601 $262,498 1.32 Participant Cost Test (PCT) $636,888 $2,600,361 $1,963,473 4.08 Rate Impact Test (RIM) $3,175,422 $1,070,601 ($2,104,821) 0.34 Lifecycle Revenue Impacts ($/kWh) 0.00008 Discounted Participant Payback (years) 2.57 Applied Energy Group,Inc. I appliedenergygroup.com 4 11 Table 6: 2022 Appliances Cost-Effectiveness Results (Without NEBs) - (Load Shape- Residential ERWH_7P) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test (PTRC) + $0.20 $3,678 $1,140 ($2,538) 0.31 Conservation Adder Total Resource Cost Test (TRC) No $0.20 $3,678 $1,037 ($2,642) 0.28 Adder Utility Cost Test (UCT) $0.09 $1,723 $1,037 ($687) 0.60 Participant Cost Test (PCT) $3,590 $3,433 ($158) 0.96 Rate Impact Test(RIM) $3,951 $1,037 ($2,915) 0.26 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 14.14 Table 7: 2022 Building Shell Cost-Effectiveness Results (Without NEBs) - (Load Shape- ID_Single_Family_Heat pump) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test (PTRC) + $0.13 $15,533 $9,638 ($5,895) 0.62 Conservation Adder Total Resource Cost Test (TRC) No $0.13 $15,533 $8,762 ($6,771) 0.56 Adder Utility Cost Test (UCT) $0.07 $8,331 $8,762 $431 1.05 Participant Cost Test (PCT) $14,439 $22,666 $8,227 1.57 Rate Impact Test(RIM) $25,492 $8,762 ($16,730) 0.34 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 28.67 Table 8: 2022 Electronics Cost-Effectiveness Results (Without NEBs) - (Load Shape-ID—Single Family Plug) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test(PTRC) + $0.25 $694 $165 ($528) 0.24 Conservation Adder Total Resource Cost Test(TRC) No $0.25 $694 $150 ($543) 0.22 Adder Utility Cost Test (UCT) $0.18 $517 $150 ($366) 0.29 Participant Cost Test (PCT) $476 $564 $88 1.19 Rate Impact Test (RIM) $796 $150 ($646) 0.19 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 4.22 Applied Energy Group,Inc. I appliedenergygroup.com 5 I Table 9: 2022 Home Energy Kits Cost-Effectiveness Results (Without NEBs) - (Load Shape- Residential LIGHTING_7P) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test (PTRC) + $0.04 $9,610 $13,846 $4,236 1.44 Conservation Adder Total Resource Cost Test (TRC) No $0.04 $9,610 $12,588 $2,978 1.31 Adder Utility Cost Test (UCT) $0.05 $9,945 $12,588 $2,642 1.27 Participant Cost Test (PCT) $2,579 $27,833 $25,254 10.79 Rate Impact Test(RIM) $35,199 $12,588 ($22,612) 0.36 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 0.95 Table 10: 2022 HVAC Cost-Effectiveness Results (Without NEBs) - (Load Shape- ID_Single_Family_Heat pump) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test (PTRC) + $0.09 $173,605 $110,736 ($62,869) 0.64 Conservation Adder Total Resource Cost Test (TRC) No $0.09 $173,605 $100,669 ($72,936) 0.58 Adder Utility Cost Test (UCT) $0.04 $79,653 $100,669 $21,016 1.26 Participant Cost Test (PCT) $147,938 $251,181 $103,242 1.70 Rate Impact Test(RIM) $293,120 $100,669 ($192,452) 0.34 Lifecycle Revenue Impacts ($/kWh) 0.00001 Discounted Participant Payback (years) 8 Table 11: 2022 Lighting Cost-Effectiveness Results (Without NEBs) - (Load Shape-Residential LIGHTING_7P) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test (PTRC) + $1.64 $34,040 $1,359 ($32,682) 0.04 Conservation Adder Total Resource Cost Test (TRC) No $1.64 $34,040 $1,235 ($32,805) 0.04 Adder Utility Cost Test (UCT) $1.60 $33,357 $1,235 ($32,122) 0.04 Participant Cost Test (PCT) $1,488 $3,152 $1,664 2.12 Rate Impact Test(RIM) $35,898 $1,235 ($34,663) 0.03 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 7 Applied Energy Group,Inc. I appliedenergygroup.com 6 Table 12: 2022 Water Heating Cost-Effectiveness Results (Without NEBs) - (Load Shape- Residential ERWH_7P) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test (PTRC) + $0.11 $17,002 $9,487 ($7,515) 0.56 Conservation Adder Total Resource Cost Test (TRC) No $0.11 $17,002 $8,625 ($8,378) 0.51 Adder Utility Cost Test (UCT) $0.09 $13,974 $8,625 ($5,350) 0.62 Participant Cost Test (PCT) $11,847 $25,075 $13,228 2.12 Rate Impact Test(RIM) $30,349 $8,625 ($21,725) 0.28 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 6 Table 13: 2022 Whole Building Cost-Effectiveness Results (Without NEBs) - (Load Shape- ID_Single_Family_Heat pump) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test(PTRC) + $0.10 $97,055 $72,718 ($24,337) 0.75 Conservation Adder Total Resource Cost Test(TRC) No $0.10 $97,055 $66,107 ($30,948) 0.68 Adder Utility Cost Test (UCT) $0.04 $33,953 $66,107 $32,154 1.95 Participant Cost Test (PCT) $95,144 $149,349 $54,205 1.57 Rate Impact Test (RIM) $162,677 $66,107 ($96,570) 0.41 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 26 Table 14: 2022 Transportation Cost-Effectiveness Results (Without NEBs) - (Load Shape- ID_Single_Family_Heating) Levelized NPV Net Benefit/Cost Cost-Effectiveness Test NPV Costs $/kWh Benefits Benefits Ratio Total Resource Cost Test(PTRC) + $0.04 $830,217 $958,573 $128,356 1.15 Conservation Adder Total Resource Cost Test(TRC) No $0.04 $830,217 $871,430 $41,213 1.05 Adder Utility Cost Test (UCT) $0.03 $626,649 $871,430 $244,781 1.39 Participant Cost Test (PCT) $359,386 $2,117,108 $1,757,722 5.89 Rate Impact Test (RIM) $2,587,939 $871,430 ($1,716,509) 0.34 Lifecycle Revenue Impacts ($/kWh) 0.00014 Discounted Participant Payback (years) 1.64 Applied Energy Group,Inc. I appliedenergygroup.com 7 I Table 15: Home Energy Savings NEBs by Measure- PY2022 Total NEBs Measure Discount Total NPV Measure Name ($/yr) Quantity Life Rate Benefits Appliances $283 39 13.52 6.88% $2,343 Energy Kits $5,073 408 10.26 6.88% $35,583 Table 76: 2022 WSH Program Cost-Effectiveness Results (Including NEBs) Levelized NPV Net Benefit/Cost Cost-Effectiveness Test NPV Costs $/kWh Benefits Benefits Ratio Total Resource Cost Test(PTRC) + $0.05 $1,181,433 $1,215,588 $34,154 1.03 Conservation Adder Total Resource Cost Test(TRC) No Adder $0.05 $1,181,433 $1,108,528 ($72,906) 0.94 Utility Cost Test (UCT) $0.04 $808,104 $1,070,601 $262,498 1.32 Participant Cost Test (PCT) $636,888 $2,643,924 $2,007,036 4.15 Rate Impact Test (RIM) $3,175,422 $1,070,601 ($2,104,821) 0.34 Lifecycle Revenue Impacts ($/kWh) 0.00008 Discounted Participant Payback (years) 3 Table 17:Appliances Cost-Effectiveness Results (with NEBs) -PY2022 (Load Shape- Residential ERWH_7P) Cost-Effectiveness Test Levelized NPV NPV Net Benefit/Cost $/kWh Costs Benefits Benefits Ratio Total Resource Cost Test(PTRC) + $0.20 $3,678 $3,483 ($195) 0.95 Conservation Adder Total Resource Cost Test(TRC) No Adder $0.20 $3,678 $3,379 ($299) 0.92 Utility Cost Test (UCT) $0.09 $1,723 $1,037 ($687) 0.60 Participant Cost Test (PCT) $3,590 $6,095 $2,505 1.70 Rate Impact Test (RIM) $3,951 $1,037 ($2,915) 0.26 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 8 Applied Energy Group,Inc. I appliedenergygroup.com 8 11 Table 78: Home Energy Kit Cost-Effectiveness Results (with NEBs) -PY2022 (Load Shape- Residential LIGHTING_7P) Levelized NPV Net Benefit/Cost Cost-Effectiveness Test NPV Costs $/kWh Benefits Benefits Ratio Total Resource Cost Test(PTRC) + Conservation $0.04 $9,610 $49,430 $39,820 5.14 Adder Total Resource Cost Test(TRC) No Adder $0.04 $9,610 $48,171 $38,561 5.01 Utility Cost Test (UCT) $0.05 $9,945 $12,588 $2,642 1.27 Participant Cost Test (PCT) $2,579 $68,734 $66,155 26.65 Rate Impact Test (RIM) $35,199 $12,588 ($22,612) 0.36 Lifecycle Revenue Impacts ($/kWh) 0.00000 Discounted Participant Payback (years) 0.38 Applied Energy Group,Inc. I appliedenergygroup.com 9 '0AEG APPLIED ENERGY GROUP MEMORANDUM To: Alesha Mander, PacifiCorp From: Andrew Cottrell, Andy Hudson, Elizabeth Applegate, AEG Date: April 21, 2023 Re: PacifiCorp Idaho Home Energy Reporting Cost-Effectiveness Results — PY2022 AEG estimated the cost-effectiveness of PacifiCorp's overall energy efficiency portfolio in the state of Idaho based on Program Year (PY) 2022 costs and savings estimates provided by PacifiCorp. This memo provides cost- effectiveness results for the Home Energy Reporting program. The program passes all cost effectiveness tests. This memo provides analysis inputs and results in the following tables: • Table 1: Cost-Effectiveness Analysis Inputs • Table 2: Home Energy Reporting Annual Program Costs, Nominal - PY2022 • Table 3: 2022 Home Energy Reporting kWh Savings by Measure Category • Table 4: 2022 Home Energy Reporting Program Cost-Effectiveness Results - (Load Shape - ID—Single—Family—Heat—pump) The following assumptions were utilized in the analysis: Avoided Costs: Hourly values provided by PacifiCorp based on the 2021 Integrated Resource Plan (IRP) Preferred Portfolio, converted into annual values using Idaho load shapes from the same IRP. Modeling Inputs: measure savings, costs, measure lives, incentive levels, and portfolio costs were based on estimates provided by PacifiCorp. Other Economic Assumptions: Discount rate, line loss, retail rate, and inflation rate values were provided by PacifiCorp and are presented in Table 1 below. Tables 1 and 2 below summarize cost-effectiveness assumptions for the Home Energy Reporting program. All costs and impacts are presented at the program level. Applied Energy Group,Inc. I appliedenergygroup.com 1 Table 1: Cost-Effectiveness Analysis Inputs Parameter Value Discount Rate 6.88% Residential Line Loss 9.06% Residential Energy Rate ($/kWh) $0.10 Inflation Rate' 2.16% Table 2: Home Energy Reporting Annual Program Costs, Nominal-PY2022' Program Program Total Utility Program Year Utility Admin Incentives Delivery Development Budget Home Energy Reports $63,000 $4,603 $20,000 $0 $87,603 Total Program $63,000 $4,603 $20,000 $0 $87,603 Tables 3 and 4 present the savings and cost-effectiveness results at the program and measure category levels. Table 3: 2022 Home Energy Reporting kWh Savings by Measure Category Gross kWh Adjusted Net to Net kWh Realization Gross kWh Measure Program Year Savings at Gross Savings at Rate Savings at Life Site Ratio Site Site Home Energy 5,018,450 92% 4,616,974 100% 4,616,974 1 Reports Total Program 5,018,450 92% 4,616,974 100% 4,616,974 1 Table 4: 2022 Home Energy Reporting Program Cost-Effectiveness Results- (Load Shape- ID_Single_Family_Heat pump) Levelized NPV Benefit/Cost Cost-Effectiveness Test NPV Benefits Net Benefits $/kWh Costs Ratio Total Resource Cost Test (PTRC) + $0.02 $87,603 $351,878 $264,275 4.02 Conservation Adder Total Resource Cost Test (TRC) No $0.02 $87,603 $319,889 $232,286 3.65 Adder Utility Cost Test (UCT) $0.02 $87,603 $319,889 $232,286 3.65 Participant Cost Test (PCT) $0 $467,699 $467,699 n/a Rate Impact Test(RIM) $555,303 $319,889 ($235,414) 0.58 Lifecycle Revenue Impacts ($/kWh) 0.00024 1 To align with annual budget expectations,cost-effectiveness inputs are presented in nominal dollars. Applied Energy Group,Inc. I appliedenergygroup.com 2 '0AEG APPLIED ENERGY GROUP MEMORANDUM To: Alesha Mander, PacifiCorp From: Andrew Cottrell, Andy Hudson, Elizabeth Applegate, AEG Date: April 21, 2023 Re: PacifiCorp Idaho Low-Income Weatherization Cost-Effectiveness Results — PY2022 AEG estimated the cost-effectiveness of PacifiCorp's overall energy efficiency portfolio in the state of Idaho based on Program Year (PY) 2022 costs and savings estimates provided by PacifiCorp. This memo provides cost- effectiveness results for the Low-Income Weatherization program. The program does not pass any of the cost effectiveness tests. This memo provides analysis inputs and results in the following tables: • Table 1: Cost-Effectiveness Analysis Inputs • Table 2: Low Income Weatherization Annual Program Costs, Nominal - PY2022 • Table 3: 2022 Low Income Weatherization kWh Savings by Measure Category • Table 4: 2022 Low Income Weatherization Benefit/Cost Ratios by Measure Category • Table 5: 2022 Low Income Weatherization Program Cost-Effectiveness Results (without NEBs) - (Load Shape- ID—Single—Family—Heat—pump) • Table 6: 2022 Low Income Weatherization NEBs • Table 7: 2022 Low Income Weatherization Program Cost-Effectiveness Results (Including NEBs) - (Load Shape- ID—Single—Family—Heat—pump) The following assumptions were utilized in the analysis: Avoided Costs: Hourly values provided by PacifiCorp based on the 2021 Integrated Resource Plan (IRP) Preferred Portfolio, converted into annual values using Idaho load shapes from the same IRP. Modeling Inputs: measure savings, costs, measure lives, incentive levels, and portfolio costs were based on estimates provided by PacifiCorp. Other Economic Assumptions: Discount rate, line loss, retail rate, and inflation rate values were provided by PacifiCorp and are presented in Table 1 below. Applied Energy Group,Inc. I appliedenergygroup.com 1 I Tables 1 and 2 below summarize cost-effectiveness assumptions for the Low Income Weatherization program. All costs and impacts are presented at the program and measure category level. Table 7: Cost-Effectiveness Analysis Inputs Parameter Value Discount Rate 6.88% Residential Line Loss 9.06% Residential Energy Rate ($/kWh) $0.10 Inflation Rate' 2.16% Table 2: Low Income Weatherization Annual Program Costs, Nominal- PY20221 Program Utility Program Total Utility Gross Program Year Incentives Customer Delivery Admin Development Budget Costs Low Income Weatherization $8,503 $2,516 $16,172 $120,784 $147,975 $120,784 Total Program $8,503 $2,516 $16,172 $120,784 $147,975 $120,784 Tables 3 through 5 present the savings and cost-effectiveness results at the program and measure category levels. Tables 6 and 7 present the NEB impacts for the Low-Income Weatherization program and the cost-effectiveness results including NEBs at the program level. Table 3: 2022 Low Income Weatherization kWh Savings by Measure Category Gross Adjusted Net kWh Program Year kWh Realization Gross kWh Net to Gross Savings at Measure Savings at Rate Savings at Ratio Life Site Site Site Home Energy Reports 31,995 72% 23,036 100% 23,036 25 Total Program 31,995 72% 23,036 100% 23,036 25 1 To align with annual budget expectations,cost-effectiveness inputs are presented in nominal dollars. Applied Energy Group,Inc. I appliedenergygroup.com 2 Table 4: 2022 Low Income Weatherization Benefit/Cost Ratios by Measure Category Program Year PTRC TRC UCT RIM PCT Low Income Weatherization with NEBs 0.95 0.93 0.20 0.16 n/a Low Income Weatherization 0.15 0.14 0.20 0.16 n/a Table 5: 2022 Low Income Weatherization Program Cost-Effectiveness Results (without NEBs) - (Load Shape- ID_Single_Family_Heat pump) Cost-Effectiveness Test Levelized NPV Costs NPV Benefits Net Benefits Benefit/Cost $/kWh Ratio Total Resource Cost Test (PTRC) + $0.47 $147,975 $22,831 ($125,144) 0.15 Conservation Adder Total Resource Cost Test (TRC) No $0.47 $147,975 $20,755 ($127,220) 0.14 Adder Utility Cost Test (UCT) $0.47 $147,975 $28,880 ($119,095) 0.20 Participant Cost Test (PCT) $120,784 $156,525 $35,741 1.30 Rate Impact Test(RIM) $183,716 $28,880 ($154,836) 0.16 Lifecycle Revenue Impacts ($/kWh) 0.00001 Table 6: 2022 Low Income Weatherization NEBs Non-Energy Benefit Program Perspective Impact Adjusted Total NEBs $117,288 PTRC, TRC Table 7: 2022 Low Income Weatherization Program Cost-Effectiveness Results (Including NEBs) - (Load Shape- ID_Single_Family_Heat pump) Cost-Effectiveness Test Levelized NPV Costs NPV Benefits Net Benefits Benefit/Cost $/kWh Ratio Total Resource Cost Test (PTRC) + $0.47 $147,975 $140,119 ($7,856) 0.95 Conservation Adder Total Resource Cost Test (TRC) No $0.47 $147,975 $138,043 ($9,932) 0.93 Adder Utility Cost Test (UCT) $0.47 $147,975 $28,880 ($119,095) 0.20 Participant Cost Test (PCT) $120,784 $156,525 $35,741 1.30 Rate Impact Test(RIM) $183,716 $28,880 ($154,836) 0.16 Lifecycle Revenue Impacts ($/kWh) 0.00001 Applied Energy Group,Inc. I appliedenergygroup.com 3 APPENDICES B & C ARE CONFIDENTIAL IN THEIR ENTIRETY AND ARE PROVIDED UNDER SEPARATE COVER