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HomeMy WebLinkAbout20120216Spanos Di.pdfRECEIVED 2011 fEB l 5 PM 5: l 5 !"c' ,-.IOA40 PU¿,..¡"l ...~ UTIUTIES COMMISSIUl~ BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION IN THE MATTER OF THE APPLICATION OF IDAHO POWER COMPANY FOR AUTHORITY TO INCREASE ITS RATES DUE TO REVISED DEPRECIATION RATES FOR ELECTRIC PLANT-IN- SERVICE. CASE NO. IPC-E-12-08 IDAHO POWER COMPANY DIRECT TESTIMONY OF JOHN J. SPANOS 1 Q. 2 A. Please state your name and business address. My name is John J. Spanos. My business 3 address is 207 Senate Avenue, Camp Hill, Pennsylvania. 4 Q. 5 A. Are you associated with any firm? Yes.I am associated with the firm of Gannett 6 Fleming, Inc. - Valuation and Rate Division. 7 Q. 8 Fleming, Inc.? 9 A. How long have you been associated with Gannett I have been associated with the firm since 10 college graduation in June 1986. 11 Q. 12 A. 13 Rate Division. 14 Q. 15 A. What is your position with the firm? I am a Vice President of the Valuation and What is your educational background? I have Bachelor of Science degrees in 16 Industrial Management and Mathematics from Carnegie-Mellon 17 University and a Master of Business Administration from 18 York College. 19 Q. 20 A. Do you belong to any professional societies? Yes.I am a member of the Society of 21 Depreciation Professionals and the American Gas 22 Association/Edison Electric Institute Industry Accounting 23 Committee. 24 Q.Do you hold any special certification as a 25 depreciation expert? SPANOS, DI 1 Idaho Power Company 1 A.Yes. The Society Df Depreciation 2 Professionals has established national standards for 3 depreciation professionals. The Society administers an 4 examination to become certified in this field. I passed 5 the certification exam in September 1997 and was 6 recertified in August 2003 and February 2008. 7 Q.Please outline your experience in the field of 8 depreciation. 9 A.In June, 1986, I was employed by Gannett 10 Fleming, Inc. as a Depreciation Analyst. During the period 11 from June 1986 through December 1995, I helped prepare 12 numerous depreciation and original cost studies for utility 13 companies in various industries. I helped perform 14 depreciation studies for the following telephone companies: 15 United Telephone of Pennsylvania, United Telephone of New 16 Jersey, and Anchorage Telephone Utility. I helped perform 17 depreciation studies for the following companies in the 18 railroad industry: Union Pacific Railroad, Burlington 19 Northern Railroad, and Wisconsin Central Transportation 20 Corporation. 21 I helped perform depreciation studies for the 22 following organizations in the electric industry: Chugach 23 Electric Association, The Cincinnati Gas and Electric 24 Company (CG&E), The Union Light, Heat and Power Company 25 SPANOS, DI 2 Idaho Power Company 1 (ULH&P), Northwest Territories Power Corporation, and the 2 Ci ty of Calgary - Electric System. 3 I helped perform depreciation studies for the 4 following pipeline companies: TransCanada Pipelines 5 Limited, Trans Mountain Pipe Line Company Ltd., 6 Interprovincial Pipe Line Inc., Nova Gas Transmission 7 Limi ted, and Lakehead Pipeline Company. 8 I helped perform depreciation studies for the 9 following gas companies: Columbia Gas of Pennsylvania, 10 Columbia Gas of Maryland, The Peoples Natural Gas Company, 11 T. W. Phillips Gas & Oil Company, CG&E, ULH&P, Lawrenceburg 12 Gas Company, and Penn Fuel Gas, Inc. 13 I helped perform depreciation studies for the 14 following water companies: Indiana-American Water Company, 15 Consumers Pennsylvania Water Company, and The York Water 16 Company; and depreciation and original cost studies for 17 Philadelphia Suburban Water Company and Pennsylvania- 18 American Water Company. 19 In each of the above studies, I assembled and 20 analyzed historical and simulated data, performed field 21 reviews, developed preliminary estimates of service life 22 and net salvage, calculated annual depreciation, and 23 prepared reports for submission to state public utility 24 commissions or federal regulatory agencies. I performed 25 SPANOS, DI 3 Idaho Power Company 1 these studies under the general direction of William M. 2 Stout, P.E. 3 In January 1996, I was assigned to the position of 4 Supervisor of Depreciation Studies. In July 1999, I was 5 promoted to the position of Manager, Depreciation and 6 Valuation Studies. In December 2000, I was promoted to my 7 present position as Vice-President of the Valuation and 8 Rate Division of Gannett Fleming, Inc. and I became 9 responsible for conducting all depreciation, valuation, and 10 original cost studies, including the preparation of final 11 exhibits and responses to data requests for submission to 12 the appropriate regulatory bodies. 13 Since January 1996, I have conducted depreciation 14 studies similar to those previously listed including 15 assignments for Pennsylvania-American Water Company; Aqua 16 Pennsylvania; Kentucky-American Water Company; Virginia- 17 American Water Company; Indiana-American Water Company; 18 Hampton Water Works Company; Omaha Public Power District; 19 Enbridge Pipe Line Company; Inc.; Columbia Gas of Virginia, 20 Inc.; Virginia Natural Gas Company National Fuel Gas 21 Distribution Corporation - New York and Pennsylvania 22 Divisions; The City of Bethlehem - Bureau of Water; The 23 City of Coatesville Authority; The City of Lancaster - 24 Bureau of Water; Peoples Energy Corporation; The York Water 25 Company; Public Service Company of Colorado; Enbridge SPANOS, DI 4 Idaho Power Company 1 Pipelines; Enbridge Gas Distribution, Inc.; Reliant Energy- 2 HLP; Massachusetts-American Water Company; St. Louis County 3 Water Company; Missouri-American Water Company; Chugach 4 Electric Association; Alliant Energy; Oklahoma Gas & 5 Electric Company; Nevada Power Company; Dominion Virginia 6 Power; NUl-Virginia Gas Companies; Pacific Gas & Electric 7 Company; PSi Energy; NUl - Elizabethtown Gas Company; 8 Cinergy Corporation - CG&E; Cinergy Corporation - ULH&P; 9 Columbia Gas of Kentucky; South Carolina Electric & Gas 10 Company; Idaho Power Company; El Paso Electric Company; 11 Central Hudson Gas & Electric; Centennial Pipeline Company; 12 CenterPoint Energy-Arkansas; CenterPoint Energy - Oklahoma; 13 CenterPoint Energy - Entex; CenterPoint Energy - Louisiana; 14 NSTAR - Boston Edison Company; Westar Energy, Inc.; United 15 Water Pennsylvania; PPL Electric Utilities; PPL Gas 16 Utilities; Wisconsin Power & Light Company; TransAlaska 17 Pipeline; Avista Corporation; Northwest Natural Gas; 18 Allegheny Energy Supply, Inc.; Public Service Company of 19 North Carolina; South Jersey Gas Company; Duquesne Light 20 Company; MidAmerican Energy Company; Laclede Gas; Duke 21 Energy Company; E. ON U. S. Services Inc.; Elkton Gas 22 Services; Anchorage Water and Wastewater Utility; Kansas 23 City Power and Light; Duke Energy North Carolina; Duke 24 Energy South Carolina; Duke Energy Ohio Gas; Duke Energy 25 Kentucky; Duke Energy Indiana; Northern Indiana Public SPANOS, DI 5 Idaho Power Company 1 Service Company; Tennessee-American Water Company; Columbia 2 Gas of Maryland; Bonneville Power Administration; NSTAR 3 Electric and Gas Company; EPCOR Distribution, Inc.; B. C. 4 Gas Utility, Ltd; Entergy Arkansas; Entergy Texas; Entergy 5 Mississippi; Entergy Louisiana; Entergy Gulf States 6 Louisiana; the Borough of Hanover; Madison Gas and 7 Electric; Atlantic City Electric; and Greater Missouri 8 Operations. My additional duties include determining final 9 life and salvage estimates, conducting field reviews, 10 presenting recommended depreciation rates to management for 11 its consideration and supporting such rates before 12 regulatory bodies. 13 Q.Have you submitted testimony to any state 14 utility commission on the subj ect of utility plant 15 depreciation? 16 A.Yes. I have submitted testimony to the 17 Pennsylvania Public Utility Commission; the Commonwealth of 18 Kentucky Public Service Commission; the Public Utilities 19 Commission of Ohio; the Nevada Public Utility Commission; 20 the Public Utilities Board of New Jersey; the Missouri 21 Public Service Commission; the Massachusetts Department of 22 Telecommunications and Energy; the Alberta Energy & Utility 23 Board; the Idaho Public Utility Commission; the Louisiana 24 Public Service Commission; the State Corporation Commission 25 of Kansas; the Oklahoma Corporate Commission; the Public SPANOS, DI 6 Idaho Power Company 1 Service Commission of South Carolina; the Railroad 2 Commission of Texas - Gas Services Division; the New York 3 Public Service Commission; the Illinois Commerce 4 Commission; the Indiana Utility Regulatory Commission; the 5 California Public Utilities Commission; the Federal Energy 6 Regulatory Commission ("FERC"); the Arkansas Public Service 7 Commission; the Public Utility Commission of Texas; the 8 Maryland Public Service Commission; the Washington 9 Utilities and Transportation Commission; the Tennessee 10 Regulatory Commission; the District of Columbia Public 11 Service Commission; the Mississippi Public Service .12 Commission; the Regulatory Commission of Alaska; Delaware 13 Public Service Commission; Virginia State Corporation 14 Commission; Colorado Public Utility Commission; Oregon 15 Public Utility Commission; Wisconsin Public Service 16 Commission; and the North Carolina Utilities Commission. 17 Q .Have you had any additional education relating 18 to utility plant depreciation? 19 A.Yes.I have completed the following courses 20 conducted by Depreciation Programs, Inc.: "Techniques of 21 Life Analysis," "Techniques of Salvage and Depreciation 22 Analysis," "Forecasting Life and Salvage," "Modeling and 23 Life Analysis Using Simulation" and "Managing a 24 Depreciation Study." I have also completed the 25 SPANOS, DI 7 Idaho Power Company 1 "Introduction to Public Utility Accounting" program 2 conducted by the American Gas Association. 3 Q.What is the purpose of your testimony in this 4 proceeding? 5 A.I am sponsoring the depreciation study 6 performed on behalf of Idaho Power Company ("Idaho Power" 7 or "Company") . 8 Q .Please define the concept of depreciation. 9 A.Depreciation refers to the loss in service 10 value not restored by current maintenance incurred in 11 connection with the consumption or prospective retirement 12 of utility plant in the course of service from causes which 13 can be reasonably anticipated or contemplated against which 14 the Company is not protected by insurance. Among the 15 causes to be given consideration are wear and tear, decay, 16 action of the elements, inadequacy, obsolescence, changes 17 in the art, changes in demand, and the requirements of 18 public authorities. 19 Q.Was the depreciation study prepared under your 20 direction and control? 21 A.Yes. 22 Q.Is Exhibit No. 1 a true and accurate copy of 23 the depreciation study performed by you on behalf of Idaho 24 Power using the average service life procedure? 25 A.Yes. SPANOS, DI 8 Idaho Power Company 1 Does Exhibit No. 1 accurately portray theQ. 2 results of your depreciation study using the average 3 service life procedure as of June 30, 2011? 4 A.Yes. 5 In conducting the depreciation study, did youQ. 6 follow generally accepted practices in the field of 7 depreciation valuation? 8 A Yes. 9 What changes do you recommend to the Company'sQ. 10 current depreciation rates? 11 I recommend changes to the depreciation ratesA. 12 currently in use as follows: Function Existing %Recommended % Steam Production Plant 2.15%2.71% Hydraulic Production Plant 2.32%2.05% Other Production Plant 3.23%3.23% Transmission Plant 2.11%2.09% Distribution Plant 2.49%2.70% General Plant 6.52%4.45% 13 14 15 16 17 18 19 20 Please describe the contents of Exhibit No.1.Q. 21 The exhibit is presented in three parts. PartA. 22 I, Introduction, presents the scope and basis for the 23 depreciation study. Part I I, Methods Used in Study, 24 includes descriptions of the basis of the study, the 25 estimation of survivor curves and net salvage and the SPANOS, DI 9 Idaho Power Company 1 calculation of annual and accrued depreciation. Part III, 2 Results of Study, presents a description of the results, 3 summaries of the depreciation calculations, graphs and 4 tables that relate to the service life and net salvage 5 analyses, and the detailed depreciation calculations. 6 The table on pages 111-4 through III-I0 presents the 7 estimated survivor curve, the net salvage percent, the 8 original cost as of June 30, 2011, the book reserve, and 9 the calculated annual depreciation accrual and rate for 10 each account or subaccount. The section beginning on page 11 III-II presents the results of the retirement rate and 12 simulated plant balance analyses prepared as the historical 13 bases for the service life estimates. The section 14 beginning on page 111-174 presents the results of the 15 salvage analysis. The section beginning on page 111-251 16 presents the depreciation calculations related to surviving 17 original cost as of June 30, 2011. 18 Q.Have you prepared a summary of your detailed 19 recommendations that are described in Exhibit No.1? 20 A.Yes, pages 111-4 through III-I0 of Exhibit No. 21 1 set forth the annual depreciation accrual rates as of 22 June 30, 2011. 23 Q.Please explain how you performed your 24 depreciation study. 25 SPANOS, DI 10 Idaho Power Company 1 A.I used the straight line remaining life method 2 of depreciation with the average service life procedure. 3 The annual depreciation is based on a method of 4 depreciation accounting that seeks to distribute the 5 unrecovered cost of fixed capital assets over the average 6 remaining life of the property within a group rather than 7 recovering the unrecovered costs over the estimated 8 remaining useful life of each unit, or group of assets. 9 For General Plant Accounts 391.1, 391.2, 393.0, 10 394.0, 395.0, 397.1, 397.2, 397.3, 397.4, and 398, I used 11 the straight line remaining life method of amortization. 12 The account numbers identified throughout my testimony 13 represent those in effect as of June 30, 2011. The annual 14 amortization is based on amortization accounting that 15 distributes the unrecovered cost of fixed capital assets 16 over the remaining amortization period selected for each 17 account and vintage. 18 Q.How did you determine the recommended annual 19 depreciation accrual rates? 20 A.I did this in two phases. In the first phase, 21 I estimated the service life and net salvage 22 characteristics for each depreciable group; that is, each 23 plant account or subaccount identified as having similar 24 characteristics.In the second phase, I calculated the 25 composite remaining lives and annual depreciation accrual SPANOS, DI 11 Idaho Power Company 1 rates based on the service life and net salvage estimates 2 determined in the first phase. 3 Q.Please describe the first phase of the 4 depreciation study, in which you estimated the service life 5 and net salvage characteristics for each depreciable group. 6 A.The service life and net salvage study 7 consisted of compiling historical data from records related 8 to Idaho Power's plant; analyzing these data to obtain 9 historical trends of survivor characteristics; obtaining 10 supplementary information from management and operating 11 personnel concerning practices and plans as they relate to 12 plant operations; and interpreting the above data and the 13 estimates used by other electric utilities to form 14 judgments of average service life and net salvage 15 characteristics. 16 Q.What historical data did you analyze for the 17 purpose of estimating service life characteristics? 18 A.I analyzed the Company's accounting entries 19 that record plant transactions during the period 1946 20 through 2010. The transactions included additions, 21 retirements, transfers, sales, and the related balances. 22 The Company records included surviving dollar value by year 23 installed for each plant account as of June 30, 2011. 24 Q.What method did you use to analyze this 25 service life data? SPANOS, DI 12 Idaho Power Company 1 A.I used the retirement rate method. This is 2 the most appropriate method when retirement data covering a 3 long period of time is available, because this method 4 determines the average rates of retirement actually 5 experienced by the Company during the period of time 6 covered by the depreciation study. 7 Q.Please describe how you used the retirement 8 rate method to analyze Idaho Power's service life data. 9 A.I applied the retirement rate analysis to each 10 different group of property in the study. For each 11 property group, I used the retirement rate data to form a 12 life table which, when plotted, shows an original survivor 13 curve for that property group. Each original survivor 14 curve represents the average survivor pattern experienced 15 by the several vintage groups during the experience band 16 studied. The survivor patterns do not necessarily describe 17 the life characteristics of the property group; therefore, 18 interpretation of the original survivor curves is required 19 in order to use them as valid considerations in estimating 20 service life. The Iowa type survivor curves were used to 21 perform these interpretations. 22 Q.What is an "Iowa type survivor curve" and how 23 did you use such curves to estimate the service life 24 characteristics for each property group? 25 SPANOS, DI 13 Idaho Power Company 1 A.Iowa type survivor curves are a widely used 2 group of survivor curves that contain the range of survivor 3 characteristics usually experienced by utilities and other 4 industrial companies. The Iowa curves were developed at 5 the Iowa State College Engineering Experiment Station 6 through an extensive process of observing and classifying 7 the ages at which various types of property used by 8 utilities and other industrial companies had been retired. 9 Iowa type curves are used to smooth and extrapolate 10 original survivor curves determined by the retirement rate 11 method. The Iowa curves and truncated Iowa curves were 12 used in tDis study to describe the forecasted rates of 13 retirement based on the observed rates of retirement and 14 the outlook for future retirements. 15 The estimated survivor curve designations for each 16 depreciable property group indicate the average service 17 life, the family within the Iowa system to which the 18 property group belongs, and the relative height of the 19 mode. For example, the Iowa 34-Rl indicates an average 20 service life of 34 years; a right-moded, or R, type curve 21 (the mode occurs after average life for right-moded 22 curves); and a low height, 1, for the mode (possible modes 23 for R type curves range from 1 to 5). 24 25 SPANOS, DI 14 Idaho Power Company 1 Q.Did you physically observe Idaho Power's plant 2 and equipment in the field as part of your depreciation 3 study? 4 A.Yes. I made a field review of Idaho Power's 5 property on November 29 and 30, 2011, to observe 6 representative portions of plant. Field reviews are 7 conducted to become familiar with Company operations and 8 obtain an understanding of the function of the plant and 9 information with respect to the reasons for past 10 retirements and the expected future causes of retirements. 11 This knowledge as well as information from other 12 discussions with management was incorporated in the 13 interpretation and extrapolation of the statistical 14 analyses. 15 Q.Were there any significant differences in this 16 study from the previous study? 17 A.Yes. The most significant change was the 18 estimated life spans for steam facilities. The life span 19 for the Boardman power plant ("Boardman") facility has been 20 reduced by 10 years due to the facility operator's plan to 21 cease coal-fired operations at Boardman 10 years earlier 22 than originally planned. The Valmy plant units have the 23 same recommended life span of 50 years; however, the 24 Bridger plant has an extended life span to 60 years. The 25 other change relates to the treatment of the standard or SPANOS, DI 15 Idaho Power Company 1 non-Advanced Metering Infrastructure ("AMI") meters. The 2 recovery of the remaining investment in non-AMI meters is 3 being amortized through 2012. Therefore, those assets have 4 been excluded from the depreciation study. 5 Q.Please describe how you estimated net salvage 6 percentages. 7 A.I estimated the net salvage percentages by 8 incorporating the historical data for the period 1954 9 through 2010 and considered estimates for other electric 10 companies. 11 Q.Please describe the second phase of the 12 process that you used in the depreciation study in which 13 you calculated composite remaining lives and annual 14 depreciation accrual rates. 15 A.After I estimated the service life and net 16 salvage characteristics for each depreciable property 17 group, I calculated the annual depreciation accrual rates 18 for each group, using the straight line remaining life 19 method, and using remaining lives weighted consistent with 20 the average service life procedure. 21 Q.Please describe the straight line remaining 22 life method of depreciation. 23 A.The straight line remaining life method of 24 depreciation allocates the original cost of the property, 25 SPANOS, DI 16 Idaho Power Company 1 less accumulated depreciation, less future net salvage, in 2 equal amounts to each year of remaining service life. 3 Q.Please describe the average service life 4 procedure. 5 A.The average service life procedure is a method 6 for determining the remaining life annual accrual for each 7 vintage property group. Under this procedure, the rate of 8 annual depreciation is based on the average service life of 9 the group, and this rate is applied to the surviving 10 balances of the group's cost. The average remaining life 11 is derived from the area under the survivor curve between 12 the attained age of the vintage and the maximum age. The 13 future book accruals (original cost less book reserve) are 14 di vided by the average remaining life of the vintage which 15 is determined by the average service life. 16 Q.Please describe amortization accounting. 17 A.In amortization accounting , units of property 18 are capitalized in the same manner as they are in 19 depreciation accounting. Amortization accounting is used 20 for accounts with a large number of units, but small asset 21 values; therefore, depreciation accounting is difficult for 22 these assets because periodic inventories are required to 23 properly reflect plant-in-service. Consequently, 24 retirements are recorded when a vintage is fully amortized 25 rather than as the units are removed from service. That SPANOS, DI 17 Idaho Power Company 1 is, there is no dispersion of retirement. All units are 2 retired when the age of the vintage reaches the 3 amortization period. Each plant account or group of assets 4 is assigned a fixed period which represents an anticipated 5 life which the asset will render full benefit. For 6 example, in amortization accounting, assets that have a 20- 7 year amortization period will be fully recovered after 20 8 years of service and taken off the Company books, but not 9 necessarily removed from service. In contrast, assets that 10 are taken out of service before 20 years remain on the 11 books until the amortization period for that vintage has 12 expired. 13 Q.Amortization accounting is being implemented 14 to which plant accounts? 15 A.Amortization accounting is only appropriate 16 for certain General Plant accounts. These accounts are 17 391.1, 391.2, 393.0, 394.0, 395.0, 397.1, 397.2, 397.3, 18 397.4, and 398.0 which represent approximately two percent 19 of depreciable plant. 20 Q.Please use an example to illustrate how the 21 annual depreciation accrual rate for a particular group of 22 property is presented in your depreciation study, Exhibit 23 No. 1. 24 A.I will use Account 362, Station Equipment, as 25 an example as it is a typical depreciable group. SPANOS, DI 18 Idaho Power Company 1 The retirement rate method was used to analyze the 2 survi vor characteristics of this property group. Aged 3 plant accounting data was compiled from 1996 through 2010 4 and analyzed in periods that best represent the overall 5 service life of this property. The life tables for the 6 1996-2010 experience band is presented on pages 111-122 7 through 111-125 of the report. The life tables display the 8 retirement and surviving ratios of the aged plant data 9 exposed to retirement by age interval. For example, page 10 1II-123 shows $83,520 retired at age 0.5 with $120,775,403 11 exposed to retirement . Consequently, the retirement ratio 12 is. 0007 and the surviving ratio is 0.9993. This life 13 table, or original survivor curve, is plotted along with 14 the estimated smooth survivor curve, the 50-Rl on page III- 15 122. 16 My calculation of the annual depreciation related to 17 the original cost at June 30, 2011, of utility plant is 18 presented on pages 1II-4 through III-I0. The calculation 19 is based on the 50-Rl survivor curve, 5 percent negative 20 net salvage, the attained age, and the allocated book 21 reserve. The tabulation sets forth the installation year, 22 the original cost, calculated accrued depreciation, 23 allocated book reserve, future accruals, remaining life, 24 and annual accrual. These totals are brought forward to 25 the table on page 111-9. SPANOS, DI 19 Idaho Power Company 1 Q.Have you established depreciation rates for 2 the Langley Gulch Power Plant? 3 A.Yes. The Langley Gulch Power Plant is a 4 combined cycle plant which is expected to go into service 5 by June 2012. The expected life span of the facility is 30 6 years. The depreciation rates are based on the 30-year 7 life span and interim survivor curves for each asset class 8 and the June 30, 2012 in service date. These rates are set 9 forth in page 111-10 of the depreciation study. 10 Q.Does this conclude your testimony? 11 A.Yes, it does. 12 13 14 15 16 17 18 1.9 20 21 22 23 24 25 SPANOS, DI 20 Idaho Power Company IDAHO POWER COMPANY Boise, Idaho DEPRECIATION STUDY CALCULATED ANNUAL DEPRECIATION ACCRUALS RELATED TO ELECTRIC PLANT AS OF JUNE 30, 2011 GANNETT FLEMING, INC. - VALUATION AND RATE DIVISION Harrisburg, Pennsylvania Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 1 of 491 ~ 6annettFleming Excellence Delivered As Promised January 26,2012 Idaho Power Company 1221 West Idaho Street Boise, 1083702 ii Attention Mr. Larry Tuckness Financial Team Leader Ladies & Gentlemen: Pursuant to your request, we have conducted a depreciation study related to the electric plant of Idaho Power Company as of June 30,2011. The attached report presents a description of the methods used in the estimation of depreciation, the summary of annual and accrued depreciation, the statistical support for the service life and net salvage estimates, and the detailed tabulations of annual and accrued depreciation. Respectfully submitted, GANNETT FLEMING, INC.~~,~ JOHN J. SPANOS Vice President Valuation and Rate Division JJS:krm 054794 Gannett Fleming. Inc. Valuation and Rate Division p.o. Box 67100 . Harrisburg, PA 17106-7100. 207 Senate Avenue. Camp Hil, PA 17011-2316 t: 717.763.7211 . f: 717.763.4590 www.gannetleming.com . www.gfvrd.com Exhibit No. 1 Case No. IPC-E-1~"Q" J. Spanos. IPC' "..: Page 2 of 491 CONTENTS PART i. INTRODUCTION Scope. . . , . . . . . . . . . . . . , . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Plan of Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Basis of Study . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . 1-3 Depreciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Survivor Curve and Net Salvage Estimates . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Calculation of Depreciation ..................................... 1-4 PART II. METHODS USED IN THE ESTIMATION OF DEPRECIATION Depreciation .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2 Service Life and Net Salvage Estimation ............................... 11-3 Average Service Life .......................................... 11-3 Survivor Curves .............................................. 11-3 Iowa Type Curves " . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5 Retirement Rate Method of Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10 Schedules of Annual Transactions in Plant Records ............ 11-11 Schedule of Plant Exposed to Retirement. . . . . . . . . . . . . . . . . . . . . 11-14 Original Life Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-16 Smoothing the Original Survivor Curve . . . . . . . . . . . . . . . . . . . . . . . 11-18 Field Trips .................................................. 11-19 Service Life Considerations .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-24 Salvage Analysis ............................................. 11-28 Net Salvage Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-28 Calculation of Annual and Accrued Depreciation. . . . . . . . . . . . . . . . . . . . . . . . . 11-31 Single Unit of Propert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-32 Group Depreciation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-32 Remaining Life Annual Accruals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-32 Average Service Life Procedure ............................ 11-32 Calculation of Annual and Accrued Amortization .................. . . . . . . . 11-33 PART III. RESULTS OF STUDY Qualification of Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111-2 Description of Statistical Support ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~i-2 Description of Depreciation Tabulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~i-3 - iii - Exhibit NO.1 Case No. IPC-E-12-oS J. Spanos, IPC Page 3 of 491 CONTENTS, cont. PART IIi. RESULTS OF STUDY, cont. Summary of Estimated Survivor Curves, Net Salvage, Original Cost, Book Depreciation Reserve and Calculated Annual Depreciation Rates as of June 30, 2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Life Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Net Salvage Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Depreciation Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - iv- 111-4 l1-11 111-174 ~i-251 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos. (PC Page 4 of 491 1-1 PART i. INTRODUCTION Exhibit No. 1 Case No. IPC-E-12-QS J. Spanos, IPC Page 5 of 491 IDAHO POWER COMPANY DEPRECIATION STUDY CALCULATED ANNUAL DEPRECIATION ACCRUALS RELATED TO ELECTRIC PLANT AS OF JUNE 30, 2011 PART i. INTRODUCTION SCOPE This report presents the results of the depreciation study prepared for Idaho Power Company ("Company") as applied to electric plant in service as of June 30,2011. It relates to the concepts, methods and basic judgments which underlie recommended annual depreciation accrual rates related to current electric plant in service. The service life and net salvage estimates resulting from the study were based on informed judgment which incorporated analyses of historical plant retirement data as recorded through 2010; a review of Company practice and outlook as they relate to plant operation and retirement; and consideration of current practice in the electric industry, including knowledge of service life and salvage estimates used for other electric properties. PLAN OF REPORT Part I includes brief statements of the scope and basis of the study. Part II presents descriptions of the methods used in the service life and salvage studies and the methods and procedures used in the calculation of depreciation. Part '" presents the results ofthe study, including summary tables, survivor curve charts and life tables resulting from the retirement rate method of analysis; tabular results of the historical net salvage analyses; and detailed tabulations of the calculated remaining lives and annual accruals. 1-2 Exhibit No. 1 Case No. IPC-E-12-oS J. Spanos, IPC Page 6 of 491 BASIS OF STUDY Depreciation For most accounts, the annual depreciation was calculated by the straight line method using the average service life procedure and the remaining life basis. For certain General Plant accounts, the annual depreciation was based on amortization accounting. The calculated remaining lives and annual depreciation accrual rates were based on attained ages of plant in service and the estimated service life and salvage characteristics of each depreciable group. Survivor Curve and Net Salvage Estimates The procedure for estimating survivor curves, which define service lives and remaining lives, consisted of compiling historical service life data for the plant accounts or other depreciable groups, analyzing the historical data base through the use of accepted techniques, and forecasting the survivor characteristics for each depreciable account or group. These forecasts were based on interpretations of the historical data analyses and the probable future. The combination of the historical data and the estimated future trend yields a complete pattern of life characteristics, i.e., a survivor curve, from which the average service life and remaining service life are derived. The historical data analyzed for life estimation purposes were compiled through 2010 from the Company's plant accounting records. Such data included plant additions, retirements, transfers and other activit recorded by the Company for each of its plant accounts and subaccounts. The estimates of net salvage by account incorporated a review of experienced costs of removal and salvage related to plant retirements by function, and consideration of trends 1-3 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 7 of 491 exhibited by the historical data. Each component of net salvage, i.e., cost of removal and salvage, was stated in dollars and as a percent of retirement. An understanding of the function of the plant and information with respect to the reasons for past retirements and the expected causes of future retirements was obtained through field trips and discussions with operating and management personneL. The supplemental information obtained in this manner was considered in the interpretation and extrapolation of the statistical analyses. Calculation of Depreciation The depreciation accrual rates were calculated using the straight line method, the remaining life basis and the average service life depreciation procedure. The life span technique was used for certain facilities. In this technique, an average date of final retirement was estimated for each such facility, and the estimated survivor curves applied to each vintage were truncated at ages coinciding with the dates of final retirement. The continuation of amortization accounting for certain accounts is recommended because of the disproportionate plant accounting effort required when compared to the minimal original cost of the large number of items in these accounts. An explanation of the calculation of annual and accrued amortization is presented on page 11-33 of the report. 1-4 Exhibit NO.1 Case No. IPC-E-12-oS J. Spanos, IPC Page S of 491 PART II. METHODS USED IN 11-1 THE ESTIMATION OF DEPRECIATION Exhibit No. 1 Case No. IPC-E-12-oa J. Spanos. IPC Page 9 of 491 PART II. METHODS USED IN THE ESTIMATION OF DEPRECIATION DEPRECIATION Depreciation, as defined in the Uniform System of Accounts, is the loss in service value not restored by current maintenance, incurred in connection with the consumption or prospective retirement of electric plant in the course of service from causes which are known to be in current operation and against which the utility is not protected by insurance. Among the causes to be given consideration are wear and tear, decay, action of the elements, inadequacy, obsolescence, changes in the art, changes in demand, requirements of public authorities, and, in the case of electric companies, the exhaustion of natural resources. Depreciation, as used in accounting, is a method of distributing fixed capital costs, less net salvage, over a period of time by allocating annual amounts to expense. Each annual amount of such depreciation expense is part of that year's total cost of providing utilty service. Normally, the period of time over which the fixed capital cost is allocated to the cost of service is equal to the period of time over which an item renders service, that is, the item's service life. The most prevalent method of allocation is to distribute an equal amount of cost to each year of service life. This method is known as the straight line method of depreciation. The calculation of annual depreciation based on the straight line method requires the estimation of average life and salvage. These subjects are discussed in the sections which follow. 11-2 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 10 of 491 SERVICE LIFE AND NET SALVAGE ESTIMATION Average Service Life The use of an average service life for a propert group implies that the various units in the group have different lives. Thus, the average life may be obtained by determining the separate lives of each of the units, or by constructing a survivor curve by plotting the number of units which survive at successive ages. A discussion of the general concept of survivor curves is presented. Also, the Iowa type survivor curves are reviewed. Survivor Curves The survivor curve graphically depicts the amount of propert existing at each age throughout the life of an original group. From the survivor curve, the average life of the group, the remaining life expectancy, the probable life, and the frequency curve can be calculated. In Figure 1, a typical smooth survivor curve and the derived curves are ilustrated. The average life is obtained by calculating the area under the survivor curve, from age zero to the maximum age, and dividing this area by the ordinate at age zero. The remaining life expectancy at any age can be calculated by obtaining the area under the curve, from the observation age to the maximum age, and dividing this area by the percent surviving at the observation age. For example, in Figure 1, the remaining life at age 30 is equal to the crosshatched area under the survivor curve divided by 29.5 percent surviving at age 30. The probable life at any age is developed by adding the age and remaining life. If the probable life of the propert is calculated for each year of age, the probable life curve shown in the chart can be developed. The frequency curve presents the number of units retired in each age interval and is derived by obtaining the differences between the amount of propert surviving at the beginning and at the end of each intervaL. 11-3 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 11 of 491 J: ~~ Q ~ ii W t I ' : (1 ' 0 ( 1 6 ' ~~ z ; : I\ o o z o t i ' 0 ;: ~ ' ü : " CO ( ' ( ' ~ n i ..g 10 0 ~ '" ~ ~ ~S u r v i v o r C u r v e \- i. P r o b a b l e L i f e C u r v e \. i \ \ \ ~ ~ - Av e r a g e L i f e \ \ .. '- l I M' L ' i ' " " ax i m u m i e , \~ i\ Pr o b a b l e L i f e "- \ .. " Ex p e c a n C y ~ ~ Ag e i ~ \ i Mo d e ' \ '" ~ ~ ~ " Fr e u e n c y C u r v e ~ ~ -. ~ '- ~ V ~ // / / . 0 ~ - " ' ~ ~~ V/ / / / / i7 / / ~- . - -- -- -- 90 80 70 C)c 6 0 'S ; '~::en 5 0 ~¡ 4 0 a. 30 20 10 o 5 10 15 20 25 3 0 3 5 Ag e I n Y e a r s Fi g u r e 1 . A T y p i c a l S u r v i v o r C u r v e a n d D e r i v e d C u r v e s 40 45 50 55 !l : I 2 i 60 Iowa Type Curves. The range of survivor characteristics usually experienced by utility and industrial properties is encompassed by a system of generalized survivor curves known as the Iowa type curves. There are four families in the Iowa system, labeled in accordance with the location of the modes of the retirements in relationship to the average life and the relative height of the modes. The left moded curves, presented in Figure 2, are those in which the greatest frequency of retirement occurs to the left of, or prior to, average service life. The symmetrical moded curves, presented in Figure 3, are those in which the greatest frequency of retirement occurs at average service life. The right moded curves, presented in Figure 4, are those in which the greatest frequency occurs to the right of, or after, average service life. The origin moded curves, presented in Figure 5, are those in which the greatest frequency of retirement occurs at the origin, or immediately after age zero. The letter designation of each family of curves (L, S, R or 0) represents the location of the mode of the associated frequency curve with respect to the average service life. The numbers represent the relative heights of the modes of the frequency curves within each family. The Iowa curves were developed at the Iowa State College Engineering Experiment Station through an extensive process of observation and classification of the ages at which industrial property had been retired, A report of the study which resulted in the classification of propert survivor characteristics into 18 type curves, which constitute three of the four families, was published in 1935 in the form of the Experiment Station's Bulletin . 125.1 These type curves have also been presented in subsequent Experiment Station 1Winfrey, Robley. Statistical Analyses of Industrial Propert Retirements. Iowa State College, Engineering Experiment Station, Bulletin 125. 1935. 11-5 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 13 of 491 l l '& Jl g..o..o('go CO g ~CN o..~ 6UlAlJ\nS lU9:J9d 11-" 8(' It.. CN oIt CN U' CN CN ooCN ~:: CDU' tJ.. -- ~ ~0..U' 0.. -c CDU' ~CN a.Q).. cDo ~o.. 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(1~ a...(1o Ifo'f It,. oIt ItN o fI ~::Ü1- g.~ ::(J Q)c.~ l.. -... p..o- as"'o~ c:...C)"¡:o .l. ~:iC)ii Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 17 of 491 bulletins and in the text, "Engineering Valuation and Depreciation."2 In 1957, Frank V. B. Couch, Jr., an Iowa State College graduate student, submitted athesis3 presenting his development of the fourth family consisting of the four 0 type survivor curves. Retirement Rate Method of Analysis The retirement rate method is an actuarial method of deriving survivor curves using the average rates at which propert of each age group is retired. The method relates to property groups for which aged accounting experience is available or for which aged accounting experience is developed by statistically aging unaged amounts and is the method used to develop the original stub survivor curves in this study. The method (also known as the annual rate method) is ilustrated through the use of an example in the following text, and is also explained in several publications, including "Statistical Analyses of Industrial Property Retirements,"4 "Engineering Valuation and Depreciation,"5 and "Depreciation Systems. "e The average rate of retirement used in the calculation of the percent surviving for the survivor curve (life table) requires two sets of data: first, the property retired during a period of observation, identified by the property's age at retirement; and second, the propert exposed to retirement at the beginnings of the age intervals during the same 2Marston, Anson, Robley Winfrey and Jean C. Hempstead. Engineering Valuation and Depreciation, 2nd Edition. New York, McGraw-Hili Book Company. 1953. 3Couch, Frank V. B., Jr. "Classification of Type 0 Retirement Characteristics of Industrial Property." Unpublished M.S. thesis (Engineering Valuation). Library, Iowa State College, Ames, Iowa. 1957. 4Winfrey, Robley, Supra Note 1. 5Marston, Anson, Robley Winfrey, and Jean C. Hempstead, Supra Note 2. eWolf, Frank K. and W. Chester Fitch. Depreciation Systems. Iowa State University Press. 1994 11-10 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 18 of 491 period. The period of observation is referred to as the experience band, and the band of years which represent the installation dates of the property exposed to retirement during the experience band is referred to as the placement band. An example ofthe calculations used in the development of a life table follows. The example includes schedules of annual aged propert transactions, a schedule of plant exposed to retirement, a life table and illustrations of smoothing the stub survivor curve. Schedules of Annual Transactions in Plant Records. The property group used to ilustrate the retirement rate method is observed for the experience band 2001-2010 during which there were placements during the years 1996-2010. In order to ilustrate the summation of the aged data by age interval, the data were compiled in the manner presented in Tables 1 and 2 on pages 11-12 and 11-13. In Table 1, the year of installation (year placed) and the year of retirement are shown. The age interval during which a retirement occurred is determined from this information. In the example which follows, $10,000 of the dollars invested in 1996 were retired in 2001. The $10,000 retirement occurred during the age interval between 4% and 5% years on the basis that approximately one-half of the amount of propert was installed prior to and subsequent to July 1 of each year. That is, on the average, property installed during a year is placed in service at the midpoint of the year for the purpose of the analysis. All retirements also are stated as occurring at the midpoint of a one-year age interval of time, except the first age interval which encompasses only one-half year. The total retirements occurring in each age interval in a band are determined by summing the amounts for each transaction year-installation year combination for that age 11-11 Exhibit No. 1 Case No. IPC-E-12-oS J. Spanos, IPC Page 190f491 TA B L E 1 . R E T I R E M E N T S F O R E A C H Y E A R 2 0 0 1 - 2 0 1 0 SU M M A R I Z E D B Y A G E I N T E R V A L Ex p e r i e n c e B a n d 2 0 0 1 - 2 0 1 0 Pl a c e m e n t B a n d 1 9 9 6 - 2 0 1 0 Re t i r e m e n t s , T h o u s a n d s o f D o l l a r s Ye a r Du r i n g Y e a r To t a l D u r i n g Ag e Pl a c e d 20 0 1 20 0 2 20 0 3 20 0 4 20 0 5 20 0 6 20 0 7 20 0 8 20 0 9 20 1 0 Ag e I n t e r v a l In t e r v a l (1 ) (2 ) (3 ) (4 ) (5 ) (6 ) (7 ) (8 ) (9 ) (1 0 ) (1 1 ) (1 2 ) (1 3 ) 19 9 6 10 16 23 24 25 26 26 13 % - 1 4 % 19 9 7 11 18 20 21 22 19 44 12 % - 1 3 % 19 9 8 11 17 19 21 22 18 64 11 % - 1 2 % 19 9 9 8 13 14 15 16 17 83 10 % - 1 1 % 20 0 0 9 14 16 17 19 20 93 9% - 1 0 % i 20 0 1 4 13 14 15 16 20 10 5 8% - 9 % ..l' 20 0 2 14 15 16 18 20 11 3 7% - 8 % 20 0 3 15 16 17 19 19 12 4 6% - 7 % 20 0 4 15 16 17 19 19 13 1 5% - 6 % 20 0 5 7 14 16 17 19 20 14 3 4% - 5 % 20 0 6 8 18 20 22 23 14 6 3% - 4 % 20 0 7 9 20 22 25 15 0 2% - 3 % 20 0 8 11 23 25 15 1 1% - 2 % 20 0 9 11 24 15 3 %- 1 % 20 1 0 -n ~ 0- % To t a l 53 68 86 10 6 12 8 15 7 19 6 23 1 27 3 30 8 1. 6 0 6 -o ~ ( ) m = = = ~( J 5 1 ~ (l l O C D 5 ' N I I z ; : 05 0 Z g, J ) : . 9 ., _ - 0 . . (0 - 0 ( ) .. ( ) i i i..NÒ00 TA B L E 2 . O T H E R T R A N S A C T I O N S F O R E A C H Y E A R 2 0 0 1 - 2 0 1 0 SU M M A R I Z E D B Y A G E I N T E R V A L Ex p e r i e n c e B a n d 2 0 0 1 - 2 0 1 0 Ac q u i s i t i o n s , T r a n s f e r s a n d S a l e s , T h o u s a n d s o f D o l l a r s Du r i n g Y e a r 20 0 1 2 0 0 2 2 0 0 3 2 0 0 4 2 0 0 5 2 0 0 6 2 0 0 7 (2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) ( 8 ) Ye a r Pl a c e d (1 ) 19 9 6 19 9 7 19 9 8 19 9 9 20 0 0 20 0 1 20 0 2 i 20 0 3 ..w 20 0 4 20 0 5 20 0 6 20 0 7 20 0 8 20 0 9 20 1 0 To t a l - - - = - = 60 a -= -= 60= "0 ~ ( ' m ~c n g ¡ ~ 11 " t 1 1 õ ' N~ z ; : .. 0 0 z g, . i : " ! = .. - " 0 . . co " 0 ( ' -i ( ' r p ..N g a T r a n s f e r A f f e c t i n g E x p o s u r e s a t B e g i n n i n g o f Y e a r b T r a n s f e r A f f e c t i n g E x p o s u r e s a t E n d o f Y e a r C S a l e w i t h C o n t i n u e d U s e Pa r e n t h e s e s d e n o t e C r e d i t a m o u n t . 20 0 8 (9 ) (5 ) b 68 (1 2 ) b (1 9 ) b (3 0 ) 20 0 9 (1 0 ) 22 8 22= Pl a c e m e n t B a n d 1 9 9 6 - 2 0 1 0 20 1 0 (1 1 ) (1 0 2 ) C (1 0 2 ) To t a l D u r i n g Ag e I n t e r v a l (1 2 ) 60 (5 )6 10 (1 2 1 ) ( 5 0 ) Ag e In t e r v a l (1 3 ) 13 % - 1 4 % 12 % - 1 3 % 11 % - 1 2 % 10 % - 1 1 % 9% - 1 0 % 8% - 9 % 7% - 8 % 6% - 7 % 5% - 6 % 4% - 5 % 3% - 4 % 2% - 3 % 1% - 2 % %- 1 % 0- % intervaL. For example, the total of $143,000 retired for age interval 4%-5% is the sum of the retirements entered on Table 1 immediately above the stairstep line drawn on the table beginning with the 2001 retirements of 1996 installations and ending with the 2010 retirements of the 2005 installations. Thus, the total amount of 143 for age interval 4%-5% equals the sum of: 10 + 12 + 13 + 11 + 13 + 13 + 15 + 17 + 19 + 20. In Table 2, other transactions which affect the group are recorded in a similar manner. The entries ilustrated include transfers and sales. The entries which are credits to the plant account are shown in parentheses. The items recorded on this schedule are not totaled with the retirements, but are used in developing the exposures at the beginning of each age intervaL. Schedule of Plant Exposed to Retirement. The development of the amount of plant exposed to retirement at the beginning of each age interval is ilustrated in Table 3 on page 11-15. The surviving plant at the beginning of each year from 2001 through 2010 is recorded by year in the portion of the table headed "Annual Survivors at the Beginning of the Year." The last amount entered in each column is the amount of new plant added to the group during the year. The amounts entered in Table 3 for each successive year following the beginning balance or addition are obtained by adding or subtracting the net entries shown on Tables 1 and 2. For the purpose of determining the plant exposed to retirement, transfers-in are considered as being exposed to retirement in this group at the beginning of the year in which they occurred, and the sales and transfers-out are considered to be removed from the plant exposed to retirement at the beginning of the 11-14 Exhibit NO.1 Case NO.IPC-E-12-0S J. Spanos, IPC Page 22 of 491 following year. Thus, the amounts of plant shown at the beginning of each year are the amounts of plant from each placement year considered to be exposed to retirement at the beginning of each successive transaction year. For example, the exposures for the installation year 2006 are calculated in the following manner: Exposures at age 0 = amount of addition Exposures at age % = $750,000 - $ 8,000 Exposures at age 1% = $742,000 - $18,000 Exposures at age 2% = $724,000 - $20,000 - $19,000 Exposures at age 3% = $685,000 - $22,000 = $750,000 = $742,000 = $724,000 = $685,000 = $663,000 For the entire experience band 2001-2010, the total exposures at the beginning of an age interval are obtained by summing diagonally in a manner similar to the summing ofthe retirements during an age interval (Table 1). For example, the figure of 3,789, shown as the total exposures at the beginning of age interval 4%-5%, is obtained by summing: 255 + 268 + 284 + 311 + 334 + 374 + 405 + 448 + 501 + 609. Original Life Table. The original life table, ilustrated in Table 4 on page 11-17, is developed from the totals shown on the schedules of retirements and exposures, Tables 1 and 3, respectively. The exposures atthe beginning ofthe age interval are obtained from the corresponding age interval of the exposure schedule, and the retirements during the age interval are obtained from the corresponding age interval of the retirement schedule. The retirement ratio is the result of dividing the retirements during the age interval by the exposures at the beginning of the age intervaL. The percent surviving at the beginning of each age interval is derived from survivor ratios, each of which equals one minus 11-16 Exhibit No. 1 Case No. IPC-E-12-0S J. Spano, IPC Page 24 of 491 TABLE 4. ORIGINAL LIFE TABLE CALCULATED BY THE RETIREMENT RATE METHOD Experience Band 2001-2010 Placement Band 1996-2010 (Exposure and Retirement Amounts are in Thousands of Dollars) Percent Age at Exposures at Retirements Surviving at Beginning of Beginning of During Age Retirement Survivor Beginning of Interval Age Interval Interval Ratio Ratio Age Interval (1 )(2)(3)(4)(5)(6) 0.0 7,490 80 0.0107 0.9893 100.00 0.5 6,579 153 0.0233 0.9767 98.93 1.5 5,719 151 0.0264 0.9736 96.62 2.5 4,955 150 0.0303 0.9697 94.07 3.5 4,332 146 0.0337 0.9663 91.22 4.5 3,789 143 0.0377 0.9623 88.15 5.5 3,057 131 0.0429 0.9571 84.83 6.5 2,463 124 0.0503 0.9497 81.19 7.5 1,952 113 0.0579 0.9421 77.11 8.5 1,503 105 0.0699 0.9301 72.65 9.5 1,097 93 0.0848 0.9152 67.57 10.5 823 83 0.1009 0.8991 61.84 11.5 531 64 0.1205 0.8795 55.60 12.5 323 44 0.1362 0.8638 48.90 13.5 167 -l 0.1557 0.8443 42.24 35.66 Total 44.780 1,606 Column 2 from Table 3, Column 12, Plant Exposed to Retirement. Column 3 from Table 1, Column 12, Retirements for Each Year. Column 4 = Column 3 divided by Column 2. Column 5 = 1.0000 minus Column 4. Column 6 = Column 5 multiplied by Column 6 as of the Preceding Age IntervaL. 11-17 Exhibit NO.1 Case No. IPC-E-12-0S J. Spanos, IPC Page 25 of 491 the retirement ratio. The percent surviving is developed by starting with 100% at age zero and successively multiplying the percent surviving at the beginning of each interval by the survivor ratio, i.e., one minus the retirement ratio for that age intervaL. The calculations necessary to determine the percent surviving at age 5% are as follows: Percent surviving at age 4% Exposures at age 4% Retirements from age 4% to 5% = Retirement Ratio Survivor Ratio Percent surviving at age 5% = 88.15 = 3,789,000 143,000 143,000 .. 3,789,000 = 1.000 - 0.0377 = (88.15) x (0.9623) = 0.0377 0.9623 84.83 = = = The totals of the exposures and retirements (columns 2 and 3) are shown for the purpose of checking with the respective totals in Tables 1 and 3. The ratio of the total retirements to the total exposures, other than for each age interval, is meaningless. The original survivor curve is plotted from the original life table (column 6, Table 4). When the curve terminates at a percent surviving greater than zero, it is called a stub survivor curve. Survivor curves developed from retirement rate studies generally are stub curves. Smoothing the Original Survivor Curve. The smoothing of the original survivor curve eliminates any irregularities and serves as the basis for the preliminary extrapolation to zero percent surviving of the original stub curve. Even if the original survivor curve is complete from 100% to zero percent, it is desirable to eliminate any irregularities, as there is still an extrapolation for the vintages which have not yet lived to the age at which the curve reaches zero percent. In this study, the smoothing of the original curve with estab- Iished type curves was used to eliminate irregularities in the original curve. The Iowa type curves are used in this study to smooth those original stub curves which are expressed as percents surviving at ages in years. Each original survivor curve 11-18 Exhibit NO.1 Case No. IPC-E-12-oS J. Spanos, IPC Page 26 of 491 was compared to the Iowa curves using visual and mathematical matching in order to determine the better fitting smooth curves. In Figures 6, 7, and 8, the original curve developed in Table 4 is compared with the L, S, and R Iowa type curves which most nearly fit the original survivor curve. In Figure 6, the L 1 curve with an average life between 12 and 13 years appears to be the best fit. In Figure 7, the SO type curve with a 12-year average life appears to be the best fit and appears to be better than the L 1 fitting. In Figure 8, the R1 type curve with a 12-year average life appears to be the best fit and appears to be better than either the L 1 or the SO. In Figure 9, the three fittings, 12-L 1, 12-S0 and 12-R1 are drawn for comparison purposes. It is probable that the 12-R1 Iowa curve would be selected as the most representative of the plotted survivor characteristics of the group, assuming no contrary relevant factors external to the analysis of historical data. Field Trips In order to be familiar with the operation of the Company and to observe representative portions of the plant, a field trip was conducted. A general understanding of the function of the plant and information with respect to the reasons for past retirements and the expected future causes of retirements was obtained during this trip. This knowledge and information were incorporated in the interpretation and extrapolation of the statistical analyses. The plant facilities visited during 2002, 2007 and 2011 are as follows: November 29, 2011 Langley Gulch Plant November 30. 2011 Lower Salmon Plant Upper Malad Plant Lower Malad Plant Upper Salmon B Plant Upper Salmon A Plant 11-19 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 27 of 491 en..Z..lùa::izlùLot.a:..a:0.J0..0 Ii z ;:a: a:0::(\.. U i0lD..(7t. 0.~Z )-- l-XU a:lùI- :i Ua: 0 z III :i -lù W -a:X ....I-0.Z X.. a:..0 X 0Z I-0-0- :i N IjI-,!a: IL Õa: ;:I- a:0en ::(\:: u..X.. a:- 0;:lù;:lD ;:gsa: VI IW::Lo gs en a!t.Z /..C) l§ //:/--- (Y ~/--ci ~..3: i 0(\-, -~~V.. i-- ¿/ ø V~ ø ~ !V l X ~ LfN oC\ (fIIei W)- Lf- Z.. Wi.ei ~ en o 8 g g 12 ¡g ~o""~~~ ~N I A I A~ns !N3j~3d 11-20 Exhibit No. 1 Case'No. IPC-E-12-08 J. Spanos, IPC Page 28 of 491 VII-Z..UJa:::z UJULla:oJa:Q.0 l.0Z ::a: a:0::t'u. U i0lDl.aiLl n.~z ..- ..:cu a:UJI- :i Ua: 0 z ~ x: -UJl. 0 a::i '"UJl-n.Z xu. a:UJ0:c 0z l-e -e- :i t'~..Ici l.Õa: ::I- a:0VI ::t':: u /..X.. a:.. 0 ..::UJ. -:0.. ::a:a:::~/UJ ::ua: '"::..Ll a:z /u.Ll a:0 0 /~v(J i /(Y- 0 ci ~V /(J 3: i a C''"- 0 IT / ~I ~V-- Æ~/g ß v "~ f rx ~ in'" æ ((a: CIw)-in.. z.. Wt. CI ~ in o:r ocr æ ogalæiRolD~~ ~N I A I A8ns lN3J83d 11-21 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 29 of 491 inI-Z..LLa::t=LLUt.a:..a:ci0LL0Z ;:a: a:0::/\.. 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CJ Strike Plant Evander Andrews (Danskin) Plant August 27, 2007 Bennett Mountain Plant Bliss Plant August 28. 2007 Shoshone Falls Plant Twin Falls Plant Milner Dam Milner Plant American Falls Plant August 7! 2002 Evander Andrew (Danskin) Plant October 14. 2002 Lower Salmon Plant Upper Salmon B Plant Upper Salmon A Plant Upper Malad Plant Lower Malad Plant Hagerman Maintenance Shop October 15.2002 Swan Falls Plant Hells Canyon Plant Hells Canyon Hatchery Brownlee Plant Oxbow Plant Oxbow Hatchery Plant October 16. 2002 CHQ Building Service Life Considerations The service life estimates were based on judgment which considered a number of factors. The primary factors were the statistical analyses of data; current Company policies and outlook as determined during conversations with management; and the survivor curve estimates from previous studies of this company and other electric utility companies. 11-24 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos,lPC Page 32 of 491 For 36 of the plant accounts and subaccounts for which survivor curves were estimated, the statistical analyses using the retirement rate method resulted in good to excellent indications of the survivor patterns experienced. These accounts represent 58 percent of depreciable plant. Generally, the information external to the statistics led to no significant departure from the indicated survivor curves for the accounts listed below. The statistical support for the service life estimates is presented in the section beginning on page ~i-11 STEAM PRODUCTION PLANT 311.00 Structures and Improvements 312.10 Boiler Plant Equipment - Scrubbers 312.20 Boiler Plant Equipment - Other 314.00 Turbogenerator Units 315.00 Accessory Electric Equipment 316.00 Miscellaneous Power Plant Equipment 316.10 Miscellaneous Power Plant Equipment - Automobiles 316.40 Miscellaneous Power Plant Equipment - Small Trucks 316.50 Miscellaneous Power Plant Equipment - Miscellaneous 316.60 Miscellaneous Power Plant Equipment - Hydraulic Trucks 316.70 Miscellaneous Power Plant Equipment - Large Trucks 316.80 Miscellaneous Power Plant Equipment - Power Operated Equipment 316.90 Miscellaneous Power Plant Equipment - Trailers HYDRAULIC PRODUCTION PLANT 331.00 Structures and Improvements 333.00 Waterwheels, Turbines and Generators 334.00 Accessory Electric Equipment TRANSMISSION PLANT 353.00 Station Equipment 355.00 Poles and Fixtures 356.00 Overhead Conductors and Devices DISTRIBUTION PLANT 361.00 Structures and Improvements 362.00 Station Equipment 367.00 Underground Conductors and Devices 370.00, 370.20 & 370.30 Meters - Non-AMI 371.10 Photovoltaic Installations 371.20 Installation on Customer Premises 11-25 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 33 of 491 GENERAL PLANT 390.20 Leasehold Improvements 391.21 Offce Furniture and Equipment - EDP Equipment - Servers 392.10 Transportation Equipment - Automobiles 392.40 Transportation Equipment - Small Trucks 392.50 Transportation Equipment - Miscellaneous 392.60 Transportation Equipment - Large Trucks (Hydraulic) 392.70 Transportation Equipment - Large Trucks (Non-Hydraulic) 392.90 Transportation Equipment - Trailers 396.00 Power Operated Equipment Account 331.00, Structures and Improvements, is used to ilustrate the manner in which the study was conducted for the groups in the preceding list. Aged plant accounting data for the hydraulic production plant have been compiled for the years 1946 through 2010. These data have been coded in the course of the Company's normal record keeping according to account or propert group, type of transaction, year in which the transaction took place, and year in which the electric plant was placed in service. The retirements, other plant transactions, and plant additions were analyzed by the retirement rate method. The interim survivor curve estimate is based on the statistical indications for the period 1946 through 2010 and 1977 through 2010. The Iowa 105-R2.5 is a reasonable fit of the stub original survivor curve. The 105-year interim service life is within the typical service life range of 75 to 120 years for hydraulic production structures. The 1 05-year life reflects the Company's plans to replace small components of the structures prior to the final retirement of the hydraulic production plant. Inasmuch as production plant consists of large generating units, the life span technique was employed in conjunction with the use of interim survivor curves which reflect interim retirements that occur prior to the ultimate retirement of the major unit. An interim survivor curve was estimated for each plant account, inasmuch as the rate of interim retirements differ from account to account. The interim survivor curves estimated for steam and hydraulic production plant were based on the retirement rate method of life 11-26 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 34 of 491 analysis which incorporated experienced aged retirements for the period 1980 through 2010 for steam and 1946 through 2010 for hydraulic. The life span estimates for power generating stations were the result of considering experienced life spans of similar generating units, the age of surviving units, general operating characteristics of the units, major refurbishing, and discussions with management personnel concerning the probable long-term outlook for the units, and the estimate of the operating partner. The life span estimate for the thermal, base-load units is 40 to 60 years. The typical range of life spans for such units is 50-65 years. Each of these units is operated by another utility, therefore, a life span was determined to be consistent with the operating partner, specifically the Boardman plant. The 75 to 114-year lifespan for the hydraulic production facilities is within the typical range. The life span of each facility is determined by condition and license dates. Life spans of 35 and 45 years were estimated for the combustion turbines. These life span estimates are typical for combustion turbines which are used primarily as peaking units. A summary of the year in service, life span and probable retirement year for each power production unit follows: Depreciable Group Major Probable Year in Retirement Service Year Life Span 1980 2020 40 1974 2034 60 1981 2031 50 1985 2035 50 Steam Production Plant Boardman Jim Bridger Valmy 1 Valmy 2 Hydraulic Production Plant Milner Dam American Falls Brownlee 1992 1978 1960,1980 11-27 2067 2055 2045 75 77 85,65 Exhibit No. 1 Case No. IPC-E-12-QS J. Spanos, IPC Page 35 of 491 Major Probable Year in Retirement Depreciable Group Service Year Life Span Bliss 1950 2033 83 Cascade 1983 2061 78 Clear Lake 1937 2017 80 Hells Canyon 1967 2045 78 Lower Malad 1948 2033 85 Lower Salmon 1949 2033 84 Milner 1992 2068 76 Oxbow 1961 2045 84 Shoshone 1921 2031 110 Strike 1952 2032 80 Swan Falls 1928,1994 2042 114,48 Twin Falls (Old)1938 2040 102 Twin Falls (New)1995 2040 45 Thousand Springs 1919 2019 100 Upper Malad 1948 2033 85 Upper Salmon A 1937 2033 96 Upper Salmon B 1947 2033 86 Other Production Plant Evander Andrews (Danskin #2)2001 2036 35 Salmon Diesel 1967 2012 45 Bennett Mountain 2005 2041 36 Evander Andrews (Danskin #1)2008 2043 35 The survivor curve estimates for the remaining accounts were based on judgment incorporating the statistical analyses and previous studies forthis and other electric utilities. Salvage Analysis The estimates of net salvage by account were based in part on historical data compiled through 2010. Cost of removal and salvage were expressed as percents of the original cost of plant retired, both on annual and three-year moving average bases. The most recent five-year average also was calculated for consideration. The net salvage estimates by account are expressed as a percent of the original cost of plant retired. 11-28 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 36 of 491 Net Salvage Considerations The estimates offuture net salvage are expressed as percentages of surviving plant in service, i.e., all future retirements. In cases in which removal costs are expected to exceed salvage receipts, a negative net salvage percentage is estimated. The net salvage estimates were based on judgment which incorporated analyses of historical cost of removal and salvage data, expectations with respect to future removal requirements and markets for retired equipment and materials. The analyses of historical cost of removal and salvage data are presented in the section titled "Net Salvage Statistics" for the plant accounts for which the net salvage estimate relied partially on those analyses. Statistical analyses of historical data for the period 1954 through 2010 for electric plant were analyzed. The analyses contributed significantly toward the net salvage estimates for 39 plant accounts and subaccounts, representing 87 percent of the depreciable plant, as follows: Steam Production Plant 311.00 Structures and Improvements 312.10 Boiler Plant Equipment - Scrubbers 312.20 Boiler Plant Equipment - Other 314.00 Turbogenerator Units 315.00 Accessory Electric Equipment Hydraulic Production Plant 331.00 Structures and Improvements 333.00 Waterwheels, Turbines and Generators 334.00 Accessory Electric Equipment 335.00 Miscellaneous Power Plant Equipment Transmission Plant 350.20 Land Right and Easements 352.00 Structures and Improvements 353.00 Station Equipment 354.00 Towers and Fixtures 355.00 Poles and Fixtures 356.00 Overhead Conductors and Devices 11-29 Exhibit NO.1 Case No. IPC-E-12-0S J. Spanos. IPC Page 37 of491 Distribution Plant 361.00 Structures and Improvements 362.00 Station Equipment 364.00 Poles, Towers and Fixtures 365.00 Overhead Conductors and Devices 366.00 Underground Conduit 367.00 Underground Conductors and Devices 368.00 Line Transformers 369.00 Services 370.00, 370.2 & 370.3 Meters - Non-AMI 370.10 Meters - AMI 371.10 Photovoltaic Installations 371.20 Installation on Customer Premises 373.20 Street Lighting and Signal Systems General Plant 390.11 390.12 392.10 392.40 392.50 392.60 392.70 392.90 396.00 Structures and Improvements - CHQ Building Structures and Improvements - Excl. CHQ Building Transportation Equipment - Automobile Transportation Equipment - Small Trucks Transportation Equipment - Miscellaneous Transportation Equipment - Large Trucks (HYD) Transportation Equipment - Large Trucks (Non-HYD) Transportation Equipment - Trailers Power Operated Equipment Account 364.00, Poles, Tower and Fixtures, is used to ilustrate the manner in which the study was conducted for the groups in the preceding list. Net salvage data for the period 1954 through 2010 were analyzed for this account. The data include cost of removal, gross salvage and net salvage amounts and each of these amounts is expressed as a percent of the original cost of regular retirements. Three-year moving averages for the 1954-1956 through 2008-2010 periods were computed to smooth the annual amounts. Cost of removal was high since the early to mid-1980s. The primary cause of the high levels of cost of removal was the extra effort needed to take out the larger poles and towers. Many of these retirements were due to highway relocations. Cost of removal for the most recent five years averaged 58 percent. 11-30 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 38 of 491 Gross salvage has varied widely throughout the period but had begun to diminish to much lower levels since the 1980s. The most recent five-year average of 8 percent gross salvage reflects recent trends and the reduced market for poles and towers. High levels of gross salvage in 1998 and 2001 related to highway relocation projects. The net salvage percent based on the overall period 1954 through 2010 is 47 percent negative net salvage and based on the most recent five-year period is 49 percent. The range of estimates made by other electric companies for Poles, Towers and Fixtures is negative 30 to negative 75 percent. The net salvage estimate for poles is negative 45 percent, is within the range of other estimates and reflects the expectation toward slightly less negative net salvage in the near future. The net salvage percents for the remaining accounts were based on judgment incorporating estimates of previous studies of this and other electric utilities. CALCULATION OF ANNUAL AND ACCRUED DEPRECIATION After the survivor curve and salvage are estimated, the annual depreciation accrual rate can be calculated. In the average service life procedure, the annual accrual rate is computed by the following equation: (100% - Net Salvage, Percent)Annual Accrual Rate, Percent =Average Service Ufe The calculated accrued depreciation for each depreciable propert group represents that portion of the depreciable cost of the group which wil not be allocated to expense through future depreciation accruals, if current forecasts of life characteristics are used as a basis for straight line depreciation accounting. 11-31 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 39 of 491 The accrued depreciation calculation consists of applying an appropriate ratio to the surviving original cost of each vintage of each account, based upon the attained age and the estimated survivor curve. The accrued depreciation ratios are calculated as follows: Ratio = (1- Average Remaining Life Expectancy) (1- Net Salvage, Percent).Average Service Life The application of these procedures is described for a single unit of property and a group of propert units. Salvage is omitted from the description for ease of application. Single Unit of Propert The calculation of straight line depreciation for a single unit of propert is straightforward. For example, if a $1,000 unit of propert attains an age of four years and has a life expectancy of six years, the annual accrual over the total life is: $1,000 (1 - ~) = $400.10 The accrued depreciation is: $1,000 = $100 per year. (4 + 6) Group Depreciation Procedures When more than a single item of property is under consideration, a group procedure for depreciation is appropriate because normally all of the items within a group do not have identical service lives, but have lives that are dispersed over a range of time. There are two primary group procedures, namely, average service life and equal life group. Remaining Life Annual Accruals. For the purpose of calculating remaining life accruals as of June 30, 2011, the depreciation reserve for each plant account is allocated 11-32 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 40 of 491 among vintages in proportion to the calculated accrued depreciation for the account. Explanations of remaining life accruals and calculated accrued depreciation follow. The detailed calculations as of June 30,2011, are set forth in the Results of Study section of the report. Average Service Life Procedure. In the average service life procedure, the remaining life annual accrual for each vintage is determined by dividing future book accruals (original cost less book reserve) by the average remaining life of the vintage. The average remaining life is a directly weighted average derived from the estimated future survivor curve in accordance with the average service life procedure. The calculated accrued depreciation for each depreciable propert group represents that portion of the depreciable cost of the group which would not be allocated to expense through future depreciation accruals, if current forecasts of life characteristics are used as the basis for such accruals. The accrued depreciation calculation consists of applying an appropriate ratio to the surviving original cost of each vintage of each account, based upon the attained age and service life. The straight lien accrued depreciation ratios are calculated as follows for the average service life procedure: Average Remaining LifeRatio = 1 - Average Service Life CALCULATION OF ANNUAL AND ACCRUED AMORTIZATION Amortization is the gradual extinguishment of an amount in an account by distributing such amount over a fixed period over the life of the asset or liability to which it applies, or over the period during which it is anticipated the benefit wil be realized. Normally, the distribution of the amount is in equal amounts to each year of the amortization period. 11-33 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 41 of 491 The calculation of annual and accrued amortization requires the selection of an amortization period. The amortization periods used in this report were based on judgment which incorporated a consideration of the period during which the assets wil render most of their service, the amortization period and service lives used by other utilities and the service life estimates previously used for the asset under depreciation accounting. Amortization accounting is proposed for certain General Plant accounts that represent numerous units of propert, but a very small portion of depreciable electric plant in service. The accounts and their amortization periods are as follows: 391.10 391.20 393 394 395 397 398 Account Amortization Period, Years Office Furniture and Equipment - Furniture Office Furniture and Equipment - Computers Stores Equipment Tools, Shop and Garage Equipment Laboratory Equipment Communication Equipment Telephones Microwaves Radio Fiber Optic Miscellaneous Equipment 20 5 25 20 20 15 15 15 10 15 The calculated accrued amortization is equal to the original cost multiplied by the ratio of the vintage's age to its amortization period. The annual amortization amount is determined by dividing the original cost by the period of amortization for the account. 11-34 Exhibit No. 1 Case No. IPC-E-12-oS J. Spanos. IPC Page 42 of 491 ~i-1 PART III. RESULTS OF STUDY Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 43 of 491 PART III. RESULTS OF STUDY QUALIFICATION OF RESULTS The calculated annual depreciation accrual rates are the principal results of the study. Continued surveilance and periodic revisions are normally required to maintain continued use of appropriate annual depreciation accrual rates. An assumption that accrual rates can remain unchanged over a long period of time implies a disregard for the inherent variability in service lives and salvage and for the change of the composition of propert in service. The annual accrual rates were calculated in accordance with the straight line remaining life method of depreciation using the average service life procedure based on estimates which reflect considerations of current historical evidence and expected future conditions. The annual depreciation accrual rates are applicable specifically to the electric plant in service as of June 30, 2011. For most plant accounts, the application of such rates to future balances that reflect additions subsequent to June 30, 2011, is reasonable for a period of three to five years. DESCRIPTION OF STATISTICAL SUPPORT The service life and salvage estimates were based on judgment which incorporated statistical analyses of retirement data, discussions with management and consideration of estimates made for other electric utility companies. The results of the statistical analyses of service life are presented in the section titled "Service Life Statistics". The estimated survivor curves for each account are presented in graphical form. The charts depict the estimated smooth survivor curve and original survivor curve( s), when applicable, related to each specific group. For groups where the original survivor curve was plotted, the calculation of the original life table is also presented. 111-2 Exhibit No.1 Case No. IPC-E-12.0S J. Spanos, IPC Page 44 of 491 The analyses of salvage data are presented in the section titled, "Net Salvage Statistics". The tabulations present annual cost of removal and salvage data, three-year moving averages and the most recent five-year average. Data are shown in dollars and as percentages of original costs retired. DESCRIPTION OF DEPRECIATION TABULATIONS A summary of the results ofthe study, as applied to the original cost of electric plant as of June 30,2011, is presented on pages 111-4 through 111-10 ofthis report. The schedule sets forth the original cost, the book depreciation reserve, future accruals, the calculated annual depreciation rate and amount, and the composite remaining life related to electric plant. The tables of the calculated annual depreciation accruals are presented in account sequence in the section titled "Depreciation Calculations." The tables indicate the estimated survivor curve and salvage percent for the account and set forth for each installation year the original cost, the calculated accrued depreciation, the allocated book reserve, future accruals, the remaining life and the calculated annual accrual amount. ~i-3 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 45 of 491 ID A H O P O W E R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V I V O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T , B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 , 2 0 1 1 NE T BO O K CA L C U L A T E D A N N U A L CO M P O S I T E SU R V I V O R SA L V A G E OR I G I N A L DE P R E C I A T I O N FU T U R E AC C R U A L AC C R U A L RE M A I N I N G AC C O U N T CU R V E PE R C E N T CO S T RE S E R V E AC C R U A L S AM O U N T RA T E LIF E (1 ) (2 ) (3 ) (4 ) (5 ) (6 ) (7 ) (8 ) = ( 7 ) / ( 4 ) (8 ) = ( 6 ) / ( 7 ) EL E C T R I C P L A N T ST E A M P R O D U C T I O N P L A N T 31 0 2 0 LA N D A N D W A T E R R I G H T S Jìm B r i d g e r 75 - R 4 0 20 3 , 0 1 5 . 2 6 14 9 , 8 2 2 53 , 1 9 3 2, 4 3 3 12 0 21 9 Va l m y U n i t 1 a n d C o m m n 75 - R 4 0 43 0 , 3 4 3 . 9 2 11 , 1 4 7 41 9 , 1 9 7 20 , 9 7 0 4. 8 7 20 0 To t a l A c c o u n t 3 1 0 . 2 63 3 , 3 5 9 . 1 8 16 0 , 9 6 9 47 2 , 3 9 0 23 . 4 0 3 3.7 0 20 2 31 1 0 0 ST R U C T U R E S A N D I M P R O V E M E N T S Jim B r i d g e r 10 0 - 5 1 (5 ) 66 , 6 1 5 , 9 9 9 5 3 51 , 4 2 0 . 9 7 2 18 , 5 2 5 . 8 2 8 63 S , 8 0 7 12 5 22 2 Va l m y U n i t i a n d C o m m o n 1 OQ . S 1 (5 ) 35 , 9 1 1 , 0 7 3 7 0 22 , 5 5 9 , 5 6 6 15 , 1 4 7 , 0 6 1 77 1 , 6 5 1 2. 1 5 19 6 Va l m y U r i i 1 2 1 OQ . S 1 (5 ) 24 , 3 9 7 , 5 3 3 . 8 6 17 . 6 0 1 , 4 3 1 8,0 1 5 , 9 8 0 34 6 , 6 2 3 14 2 23 1 To l a i A c c o u r i t 3 1 1 12 6 , 9 2 4 , 6 0 7 . 0 9 91 , 5 6 1 , 9 6 9 41 , 6 8 8 , 8 6 9 1,9 5 4 , 0 6 1 1.5 4 21 . 3 31 2 1 0 BO i l E R P L A N T E Q U I P M E N T - S C R U B B E R S Ji m Br i d g e r 60 - R 3 (1 5 ) 62 , 6 4 3 , 5 5 1 9 8 46 , 4 3 6 , 8 6 7 25 , 6 0 1 , 1 9 8 1,1 8 0 , 9 4 5 1.8 9 21 7 Va l m y U n i t 2 60 . R 3 (1 5 ) 19 , 8 2 8 , 5 1 9 6 0 14 , 7 4 1 , 6 0 6 8,0 6 1 , 1 9 2 36 S , 7 1 4 18 4 22 0 To t a l A c c o o n t 3 1 2 . 1 62 , 4 7 2 , 0 7 1 . 5 8 61 , 1 8 0 , 4 9 3 33 , 6 6 2 , 3 9 0 1,5 4 6 , 6 5 9 1.8 8 21 . 6 ~ 31 2 . 2 0 BO I L E R P L A N T E Q U I P M E N T . O T H E R Ji m Bri d g e r 50 - R 1 5 (1 5 ) 26 2 . 0 7 4 , 6 8 3 . 1 0 11 6 , 9 7 8 , 3 2 9 18 4 , 4 0 7 , 5 5 7 8, 6 8 0 , 4 8 0 33 1 21 2 Va l m y U n , ! 1 a n d C o m m o n 60 - R 1 5 (1 5 ) 80 , 5 2 9 , 5 9 3 . 9 0 44 , 8 7 1 , 3 1 7 47 , 7 3 7 , 7 1 6 2, S 7 2 , 5 2 1 31 9 18 6 Va l m y U n i t 2 60 - R 1 5 (1 5 ) 85 , 5 9 9 , 9 0 7 3 8 49 , 5 9 8 , 0 8 7 48 , 8 4 1 , 8 0 6 2, 2 3 8 , 7 3 1 26 2 21 8 To t a l A c c o u n t 3 1 2 . 2 42 8 . 2 0 4 , 1 6 4 3 8 21 1 . 4 4 7 , 7 3 3 28 0 , 9 6 7 , 0 7 9 13 , 4 9 1 , 7 3 2 3. 1 . 5 20 8 31 2 3 0 BO I L E R P L A N T E Q U I P M E N T . R A I L C A R S Jim B n d g e r 25 - R 3 20 2,4 7 8 , 4 7 7 . 9 1 1, 6 0 7 , 2 8 4 37 5 , 4 9 8 47 , 6 3 4 19 3 79 TO l a l A c c o u n t 3 r 2 3 2,4 7 6 , 4 7 7 . 9 1 1, 6 0 7 , 2 8 4 37 5 , 4 9 8 47 , 6 3 4 1.9 3 7.9 31 4 0 0 TU R 8 0 G E N E R A T O R U N I T S Ji m Br i d g e r 45 - 5 1 (1 5 ) 83 , 7 2 3 , 7 6 8 . 5 2 34 , 2 9 5 , 6 9 0 61 , 9 8 6 , 6 4 4 3, 1 3 1 , 5 6 9 3. 7 4 19 8 Va l m y U n , t 1 a n d C o m m o n 45 - 5 1 (1 5 ) 17 , 5 5 5 . 3 4 5 . 2 8 10 , 3 9 9 , 7 9 2 9,7 8 8 . 8 5 5 59 3 , 8 0 5 33 8 18 5 Va l m y U n i 1 2 45 - 5 1 (1 5 ) 25 , 8 0 4 , 5 2 1 0 5 16 . 1 0 9 4 8 0 13 , 5 6 5 , 7 1 9 71 0 , 9 8 5 2. 6 19 . 1 To / a l A c c o u n / 3 1 4 12 7 , 0 8 3 . 6 3 4 . 8 5 60 , 8 0 4 , 9 6 2 65 , 3 4 1 , 2 1 8 4, 4 3 6 , 3 5 9 34 9 19 . 2 31 5 0 0 AC C E S S O R Y E L E C T R I C E Q U I P M E N T Jim . B r i d g e r 60 - S 1 5 . (1 ) 27 , 1 6 8 , 4 7 0 . 6 8 21 , 5 5 6 , 4 2 6 5,8 8 3 , 7 3 0 29 0 , 9 0 6 10 7 20 2 Va l m y U r i t 1 a n d C o m m n 60 - S 1 . 5 (1 ) 13 , 8 8 3 , 9 7 1 3 2 10 , 0 2 9 , 6 0 1 3, 9 9 3 , 2 1 0 22 4 , 1 1 4 1.6 1 17 8 Va l m y Un i t 2 60 - 5 1 5 (1 ) 14 , 2 8 8 , 8 2 6 . 7 2 9,5 0 6 , 2 2 2 4,9 2 5 , 4 9 3 23 3 , 2 1 1 16 3 21 1 To i a l A c c o u r i l 3 1 5 55 , 3 4 1 , 2 6 8 . 9 2 41 , 0 9 2 , 2 4 9 14 , 8 0 2 , 4 3 3 74 8 , 2 3 1 1. 5 19 . 8 31 6 0 0 MI S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T 't ~ ( " m Jim B n d g e r 45 - R O 5 (2 ) 6, 3 2 5 . 7 1 3 . 2 9 1. 8 4 4 . 1 8 9 4,6 0 8 , 0 3 9 23 3 , 0 3 0 36 8 19 . 8 Va l m y U n i t 1 a n d C o m m o n 45 - R O . 5 (2 ) 3. 3 1 , 9 6 0 5 8 1, 4 5 4 , 2 1 8 2,3 5 2 , 3 8 2 13 3 , 8 6 6 35 9 17 6 ~C I g i ~ Va l m y U n i t 2 45 - R O . 5 (2 ) 1 , 6 8 6 , 0 5 3 1 8 1, 1 1 4 , 5 5 1 60 5 , 2 2 3 30 , 6 1 4 18 2 19 . 8 (O ' O ( l õ ' "' O l Z ; : To l a l A c c o u n / 3 1 6 11 , 7 4 3 , 7 2 7 0 5 4,4 1 2 , 9 5 8 7, 5 6 5 , 6 4 4 39 7 , 5 1 0 3. 3 8 19 . 0 oi 5 0 z o C I ' 0 :; ' : " õ : . 31 6 . 1 0 MI S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T - A U T O M O B I L E S 12 - L 2 15 58 , 6 5 9 . 9 5 19 , 7 4 8 30 , 2 8 3 4, 8 2 2 81 9 63 10 ' t ( " -l n n i ..""g ID A H O P O W E R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V I V O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T , B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 , 2 0 1 1 NE T BO O K CA L C U L A T E D A N N U A L CO M P O S I T E SU R V I V O R SA L V A G E OR I G I N A L DE P R E C I A T I O N FU T U R E AC C R U A L AC C R U A L RE M A I N I N G AC C O U N T CU R V E PE R C E N T CO S T RE S E R V E AC C R U A L S AM O U N T RA T E LI F E (1 ) (2 ) (3 ) (4 ) (5 ) (6 ) (7 ) (8 1 - ¡ 7 ) / ( 4 ) (9 ) = ( 6 ) / ( 7 ) 31 6 4 0 MI S C E l l A N E O U S P O W E R P L A N T E O U I P M E N T . S M A l l T R U C K S Jim Bn d g e r 12 - l 2 15 20 0 , 7 7 2 . 4 5 16 7 , 1 1 9 3,5 3 8 70 8 03 5 5. 0 0 Va l m y U n i t 1 a n d C o m m o n 12 . l 2 15 39 , 8 0 1 . 9 1 24 , 3 9 1 9, 4 4 1 93 9 23 6 10 1 To t e l A C C o t m t 3 1 6 . 4 24 0 , 5 7 4 . 3 6 19 1 , 5 1 0 12 , 9 7 9 1, 6 4 7 0.6 8 7. 9 31 6 5 0 MIS C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T . M I S C E L L A N E O U S Jim Bn d g e r 12 - l 2 15 23 , 3 6 . 9 0 16 , 2 7 3, 3 3 0 51 8 2.2 2 6.4 Va l m y U n i t 1 a n d C o m m o n 12 - l 2 15 18 , 0 1 1 . 2 3 16 , 0 0 7 (8 9 7 ) 0 To t a A c c o u n t 3 1 6 . 5 41 , 3 7 2 . 1 3 32 , 5 3 4 2,6 3 3 51 8 1. 2 5 5.1 31 6 6 0 MI S C E l l A N E O U S P O W E R P L A N T E Q U I P M E N T . H Y D R A U L I C T R U C K S 20 . l 2 15 10 6 , 0 4 9 5 9 6, 1 9 6 83 , 9 4 6 4, 6 5 8 43 9 18 0 31 6 . 7 0 MI S C E l l A N E O U S P O W E R P L A N T E Q U I P M E N T - L A R G E T R U C K S 2Q - l 2 15 80 , 4 6 4 . 1 2 44 , 2 2 2 24 , 1 7 3 1,6 8 1 20 9 14 . 4 31 6 8 0 MI S C E l l A N E O U S P O W E R P L A N T E Q U I P M E N T - P O W E R O P E R A T E D E Q U I P M E N T 20 - 0 1 30 1, 1 2 2 , 0 5 9 . 6 5 13 2 , 6 5 3 65 2 , 7 8 9 39 , 2 5 6 35 0 16 6 31 6 . 9 0 MIS C E l l A N E O U S P O W E R P L N T E Q U I P M E N T . T R A i l E R S 35 - S 1 15 13 , 9 7 7 0 4 0 11 , 8 8 0 34 2 24 5 34 . 7 TO T A L S T E A M P R O D U C T I O N P L A N T 83 6 , 5 4 , 6 8 7 . 8 0 47 2 , 7 1 5 , 4 8 0 46 5 , 7 1 4 , 2 0 4 22 , 6 9 6 , 7 3 3 2. 7 1 HY D R A U L I C P R O D U C T I O N P L A N T 33 1 0 0 ST R U C T U R E S A N D I M P R O V E M E N T S i Ha g e r m a n M a i n t e n a n c e S h o p 10 5 - R 2 5 . (2 5 ) 1, 6 4 3 . 4 9 7 2 4 86 2 , 7 7 4 1,1 9 1 , 5 9 8 70 . 8 6 6 43 1 16 8 01 Mil n e r Da m 10 5 - R 2 5 (2 5 ) 81 4 , 2 2 4 2 5 29 3 , 6 2 8 72 4 , 1 5 2 13 , 8 0 5 17 0 52 5 Nia g a r a S p r i n g s H a t c h e r y 10 5 - R 2 5 (2 5 ) 5, 3 8 6 , 6 1 4 . 9 3 2. 0 1 0 , 0 5 6 4,7 2 3 . 2 1 3 14 2 , 9 0 9 26 5 33 . 1 He l l s C a n y o n M a i n t e n a n c e S h o p 10 5 - R Z . 5 . (2 5 ) 2, 3 8 3 , 1 6 9 . 4 8 87 3 , 5 7 3 2.1 0 5 , 3 8 9 63 , 3 3 0 26 6 33 2 Ra p i d R i v e r H a t c h e r y 10 5 - R Z . 5 . (2 5 ) 2. 5 4 1 , 1 1 0 1 7 1,2 2 9 , 6 1 9 1,9 4 6 , 7 6 9 58 . 8 2 2 2. 3 1 33 1 Am e i c a n F a l l s 10 5 - R 2 5 (2 5 ) 11 , 8 0 7 , 2 0 6 . 7 9 6, 8 8 8 , 8 3 5 7. 8 7 0 , 1 7 3 19 2 , 9 0 2 16 3 40 8 Br o w n l e e 10 5 - R 2 5 (2 5 ) 31 , 4 3 8 . 8 0 7 . 3 8 20 , 8 1 3 , 3 7 3 18 , 4 8 5 . 1 3 6 56 , 8 t l 18 0 32 . 7 Bl i s s 10 5 - R Z 5 (2 5 ) 1,0 3 9 . 5 6 0 . 6 9 49 9 , 5 0 5 79 9 , 9 4 6 37 , 2 4 2 3.5 8 21 5 Ca s c a d e 10 5 - R Z 5 (2 5 ) 7, 3 6 4 , 1 5 3 7 3 3, 6 0 3 , 0 8 7 5,6 0 2 , 1 0 5 12 1 , 3 3 1 16 5 46 2 Cl e a r l a k e 10 5 - R 2 5 (2 5 ) 19 3 , 2 7 8 7 0 19 9 , 7 3 6 41 , 8 6 2 7, 0 1 8 36 3 60 He l l s C a n y o n 10 5 - R 2 5 (2 5 ) 2.7 4 5 , 3 2 5 7 5 1.1 6 4 . 8 0 4 2, 2 4 6 , 8 5 3 68 , 2 8 4 24 9 32 . 9 io w e r Ma l a d 10 5 - R 2 5 (2 5 ) 77 3 , 5 0 9 . 0 3 44 9 , 5 7 3 51 7 , 3 1 3 24 , 4 2 3 31 6 21 2 lo w e r S a l m o n 10 5 - R Z 5 (2 5 ) 2, 8 0 5 , 9 0 0 . 3 4 74 6 . 4 7 9 2, 7 6 0 . 8 9 6 12 7 , 6 4 3 45 5 21 6 Mi l n e r 10 5 - R 2 . 5 (2 5 ) 9, 5 2 5 , 8 8 1 . 2 3 3, 4 2 7 , 5 0 1 8, 4 7 9 , 8 5 1 15 8 , 1 4 0 16 6 53 6 Ox b o w H a t c h e r y 10 5 - R Z . 5 (2 5 ) 1,5 3 7 , 6 3 0 . 7 8 89 9 , 7 9 4 1,0 2 2 , 2 4 4 31 , 0 5 3 2.0 2 32 . 9 Ox b o w 10 5 . R Z 5 (2 5 ) 9,9 5 9 . 5 0 6 6 4 6, 0 4 4 . 3 8 0 6,0 5 , 0 0 3 19 9 , 4 4 9 20 0 32 1 Ox b o w C o m m o n 10 5 . R 2 5 (2 5 ) 11 1 , 9 5 2 . 2 7 11 1 , 9 5 2 27 , 9 8 8 88 6 0. 7 9 31 6 Pa h s j m e r o i A c c u m u l a t i n g P o n d s 10 5 - R 2 5 (2 5 ) 13 , 6 9 7 , 4 7 9 . 4 9 1,9 5 2 , 1 4 3 15 , 1 6 9 , 7 0 6 45 3 . 8 1 3 33 1 33 4 Pa h s i m e r o i T r a p p i n g 10 5 - R Z . 5 (2 5 ) 90 0 , 5 2 8 1 9 64 7 , 6 3 4 47 8 , 0 2 6 14 , 4 8 7 16 1 33 0 Sh o s h o n e F a l l s 10 5 - R 2 5 (2 5 ) 1 , 2 0 7 , 5 5 6 8 8 80 4 , 9 8 9 70 4 , 4 5 7 36 , 4 1 3 30 2 19 . 3 Sl r i k e 10 5 - R 2 5 (2 5 ) 9, 1 9 2 , 5 2 8 . 8 1 2, 2 8 4 , 2 0 1 9. 2 0 6 . 4 6 0 44 9 , 9 3 4 4. 8 9 20 5 Sw a n F a i t s 10 5 - R 2 . 5 (2 5 ) 25 . 4 5 3 , 9 3 8 3 3 10 , 1 4 5 , 6 6 7 21 , 6 7 1 , 7 5 8 71 5 , 8 0 7 2. 6 1 30 3 Tw i n F a i t s 10 5 - R 2 . 5 . (2 5 ) 66 1 , 2 8 5 . 2 9 38 4 , 0 6 6 44 2 , 5 4 1 15 , 7 0 2 2. 3 7 28 2 Tw i n F a l l s ( N e w ) 10 5 - R 2 5 . (2 5 ) 10 , 1 4 6 , 7 6 1 . 4 6 4, 0 1 1 , 6 8 7 8, 6 7 1 , 7 6 5 30 0 , 2 6 9 29 6 28 9 Th o u s a n d S p r i n g s 10 S - R Z 5 . (2 5 ) 36 0 , 4 8 7 8 8 31 8 . 5 9 6 13 2 , 0 1 4 16 , 6 9 0 46 3 79 Up p e r M a l a d 10 5 - R 2 5 (2 5 ) 36 3 , 6 4 7 . 0 8 30 5 , 9 6 3 14 8 , 5 7 6 7, 1 7 9 19 7 20 . 7 Up p e r S a l m o n A 10 5 - R 2 . 5 (2 5 ) 87 0 , 3 1 8 . 0 1 65 9 , 9 6 5 42 7 , 9 1 3 20 , 5 2 8 23 6 20 8 Up p e r S a l m o n 6 10 S - R 2 5 (2 5 ) 75 3 . 4 4 8 1 9 16 3 , 5 5 3 77 8 , 2 5 7 36 , 0 6 0 4. 7 9 21 6 Up p e r S a l m o n C o m m n 10 5 - R 2 5 (2 5 ) 38 9 . 6 6 4 . 0 1 20 3 , 4 5 2 28 3 , 6 2 8 13 . 1 6 4 33 8 21 5 "t H - ( " m l( J m ~ To t a l A c c o u n t 3 3 1 15 6 , 0 6 8 , 9 7 3 . 0 2 72 , 0 2 0 , 6 2 5 12 3 , 0 6 5 , 5 9 0 3,9 6 2 , 9 6 0 2.5 4 31 . i: ( ! ¡ ; .i ~ Z : = 3 3 2 . 1 0 RE S E R V O I R S , D A M S A N D W A T E R W A Y S - R E L O C A T I O N .. ~ 0 Z Br o w l e e 95 - S 4 (1 0 ) 8. 6 3 9 , 6 6 3 . 6 6 5, 4 9 6 , 0 2 8 4, 0 0 7 , 6 0 2 12 7 , 7 5 3 14 8 31 4 g, . : . ? He l t s C a n y o n 95 - S 4 (1 0 ) 94 0 , 7 8 8 . 9 3 56 7 , 8 1 4 46 7 , 0 5 4 14 , 8 8 9 15 8 31 4 .i ~ i : . . CO ( " ~ . r i i..I\6CO ID A H O P O w e R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V N O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T , B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 . 2 0 1 1 NE T BO O K CA L C U L A T E D A N N U A L CO M P O S I T E SU R V N O R SA L V A G E OR I G I N A L DE P R E C I A T I O N FU T U R E AC C R U A L AC C R U A L RE M A I N I N G AC C O U N T CU R V E PE R C E N T CO S T RE S E R V E AC C R U A L S AM O U N T RA T E LI F E (1 ) (2 ) (3 ) (4 ) (5 ) (6 ) (7 ) (8 ) = ( 7 ) 1 ( 4 ) (9 ) = ( 6 ) 1 ( 7 ) 33 2 1 0 , c o n t O) ( b o w 95 - 5 4 (1 0 1 56 , 3 0 9 . 0 0 35 . 1 0 2 26 , 8 3 8 6S 8 15 2 31 4 Ox b o w C o m m o n 95 - 5 4 (1 0 ) 1.9 2 7 , 9 1 9 6 3 1,3 9 2 , 8 6 5 72 6 , 2 7 22 , 6 9 8 1 1 9 31 8 Br o w n l e e C o m m n 95 - 5 4 (1 0 ) 7, 8 9 5 , 8 2 4 . 7 8 S,7 1 4 , 0 6 1 29 7 1 , 3 4 6 94 , 7 1 9 12 0 31 4 To t a l A c c o u n t 3 3 2 1 19 , 4 6 0 , 5 0 6 . 2 0 13 . 2 0 5 , 8 9 0 8, 2 0 0 , 8 6 7 26 ' , 1 1 3 1.3 4 31 4 33 2 2 0 RE S E R V O I R S . D A M S A N D W A T E R W A Y S M,l n e r D a m 95 . S 4 (1 0 ) 61 4 , 8 7 4 . 9 7 21 4 , 7 2 0 46 1 , 6 4 2 8, 3 7 7 13 6 55 1 Am e r i c a n F a l l s 95 - 5 4 (1 0 ) 4, 2 9 3 , 0 7 5 . 1 0 2, 8 6 2 , 9 7 7 2, 0 5 9 , 4 0 6 48 , 3 3 4 11 3 42 8 Br o w n l e e 95 - 5 4 (1 0 ) 52 , 9 6 1 . 2 2 2 . 9 5 36 , 4 6 8 , 7 2 8 21 , 7 8 8 , 6 1 7 67 6 . 5 3 4 12 8 32 . 2 Bl i s s 95 - 5 4 (1 0 ) 8, 1 2 , 0 0 3 7 1 6, 4 4 6 , 9 7 3 2, 8 0 6 , 2 3 1 13 4 , 8 9 3 16 0 20 8 Ca s c a d e 95 - 5 4 (1 0 ) 3. 1 4 5 , 6 3 0 . 4 6 1,5 3 8 , 9 9 3 1,9 2 1 , 2 0 1 39 , 7 3 5 12 6 48 . 4 Cle a r L a k e 95 - 5 4 . (1 0 ) 58 4 . 9 8 4 7 3 53 4 , 7 7 1 10 8 . 7 1 2 18 , 1 5 0 31 0 6. 0 He l l s C a n y o n 95 - 5 4 (1 0 ) 51 , 7 7 5 , 7 4 5 . 4 4 30 , 8 4 0 , 2 3 7 26 , 1 1 3 , 0 8 3 79 8 , 0 8 5 15 4 32 8 Lo w e r M a l a d 95 - 5 4 (1 0 ) 4, 8 5 7 , 2 9 1 1 4 1, 8 4 . 3 2 5 3,4 9 8 , 6 9 5 16 1 . 7 4 5 33 3 21 6 Lo w e r S a l r f l o n 95 - S 4 (1 0 ) 6, 8 3 1 , 9 9 7 . 1 5 S.2 6 8 , 8 3 3 2,2 4 8 , 3 6 4 10 8 , 4 9 4 1.5 9 20 7 Mi l n e r 95 - 5 4 (1 0 ) 16 , 5 0 0 , 0 5 8 . 7 5 5, 6 7 7 , 5 1 6 12 , 4 7 2 , 5 4 9 22 1 , 3 2 6 13 4 56 4 Ox b o w 95 - 5 4 (1 0 ) 30 , 3 1 9 , 4 0 4 . 6 7 19 , 3 6 3 , 4 1 3 13 , 9 8 7 , 9 3 2 43 9 , 5 1 2 1.4 5 31 8 Ox b o w C o m m o n 95 - 5 4 (1 0 ) 9, 8 7 1 6 5 5, 3 1 4 5,5 4 5 16 3 16 5 34 0 Sh o s h o n e F a l l s 95 - 5 4 (1 0 ) SI 2 , 4 0 1 . 4 8 51 5 , 7 1 3 47 , 9 2 9 2, 9 5 5 05 8 16 2 Str i k e 95 - 5 4 (1 0 ) 10 , 4 3 8 , 5 9 7 . 2 4 8, 1 2 6 , 3 2 0 3,3 5 6 , 1 3 7 17 0 , 0 6 7 16 3 19 7 Sw a n F a l l s 95 - S 4 (1 0 ) 13 , 8 5 6 , 8 8 6 8 7 6, 8 3 3 , 3 1 5 6,4 0 9 . 2 6 1 27 2 , 4 5 7 19 7 30 9 i Tw i n F a l l s 95 - S 4 (1 0 ) 26 3 , 0 8 9 0 8 24 3 . 6 9 9 45 , 8 9 9 2. 1 2 8 0.8 1 21 . 5 0) Tw i n F a l l s ( N e w ) 95 - 5 4 (1 0 ) 7,6 4 5 , 7 8 0 . 8 1 2, 5 3 5 , 0 2 6 5.8 7 5 , 3 3 3 19 9 , 1 6 4 26 0 29 5 Th o u s a n d S p i i n g s 95 - 5 4 (1 0 ) 2,0 8 3 , 4 4 2 . 8 2 2, 1 9 7 , 0 9 8 94 , 6 9 1 11 , 8 3 8 0. 5 7 8.0 Up p e r M a l a d 95 - S 4 . (1 0 ) 1, 3 4 2 , 1 0 7 . 2 2 1.1 1 2 , 7 9 7 36 3 , 5 2 1 17 , 9 3 0 13 4 20 3 Up p e r S a l m o n A 95 - 5 4 (1 0 ) 1, 5 1 5 , 3 7 4 2 5 44 9 , 7 7 9 1,2 1 7 , 1 3 3 57 , 6 7 7 38 1 21 1 Up p e r S a l m o n B 95 - 5 4 (1 0 ) 3. 3 2 7 , 6 8 0 4 9 2, 1 7 4 , 3 5 2 1,4 8 6 , 0 9 7 70 , 1 0 0 21 1 21 2 Up p e r S a l m o n C o m m o n 95 - 5 4 (1 0 ) 72 6 . 1 1 5 8 0 54 9 , 6 9 9 24 9 , 0 2 8 12 , 3 2 3 17 0 20 2 He l l s C a n y o n C o m m o n 95 - 5 4 . (1 0 ) 3, 7 2 3 , 1 6 8 7 0 2, 8 7 9 3 4 0 1,2 1 6 , 1 4 6 36 , 0 6 9 09 7 33 7 To t a l A c c o u n t 3 3 2 . 2 22 5 , 7 4 0 . 8 0 5 . 6 8 13 8 , 4 8 3 , 9 3 6 10 9 , 8 3 0 , 9 5 2 3, 5 0 6 , 0 5 4 1. 5 31 3 33 2 3 0 RE S E R V O I R S , D A M S A N D W A T E R W A Y S - N E Z P E R C E SQ U A R E 0 5,4 7 2 , 3 9 8 4 4 1, 5 9 2 , 2 7 1 3, 8 8 0 , 1 2 7 11 3 , 8 5 3 20 8 34 . 1 33 3 0 0 WA T E R W H E E L S , T U R B I N E S A N D G E N E R A T O R S Mil n e r Da m 80 - R 3 (1 0 ) 87 8 , 0 0 5 . 8 7 27 0 , 2 7 0 69 5 , 5 3 6 13 , 9 7 8 15 9 49 8 Am e r i c a n F a l l s 80 - R 3 (1 0 ) 26 , 6 7 1 , 6 4 3 . 7 3 14 , 5 5 6 . 0 6 1 14 . 7 8 2 . 7 4 7 38 9 , 1 2 9 14 6 38 0 Br o w n l e e 80 . R 3 (1 0 ) 41 , 7 3 4 , 0 6 6 3 9 28 , 0 0 , 7 8 5 17 , 9 0 6 , 6 9 0 57 5 , 9 5 8 13 8 31 1 Bli s s 80 - R 3 (1 0 ) 4.6 0 3 , 4 1 5 2 6 3.2 7 2 . 9 2 3 1.7 9 0 , 8 3 4 90 , 6 8 2 1 9 7 19 , 8 Ca s c a d e 80 . R 3 (1 0 ) 9.0 6 4 , 0 0 7 9 6 3,9 1 7 . 2 9 S 6. 0 5 3 , 1 1 4 14 0 , 6 9 9 15 5 43 0 Cle a r L a k e 80 . R 3 (1 0 ) 74 2 , 4 5 1 4 1 25 5 , 1 1 4 56 1 , 5 8 3 93 , 9 0 6 12 6 5 60 He l l s C a n y o n 80 - R 3 (1 0 ) 12 , 1 3 9 , 4 3 3 . 1 2 5,1 6 2 , 1 0 8 8, 1 9 1 . 2 6 8 26 7 , 6 2 5 22 0 30 6 lo w e r M a l a d 80 - R 3 (1 0 ) 49 8 , 4 8 9 . 7 9 39 2 . 5 3 4 15 5 , 8 0 5 8,3 5 6 16 8 18 6 Lo w e r S a l m o n BO - R 3 (1 0 ) 4,8 7 9 , 6 0 5 3 6 3,4 6 3 , 7 0 4 1,9 0 3 , 8 6 2 98 , 0 3 1 19 7 19 6 Mil n e r 80 - R 3 (1 0 ) 23 , 3 5 2 , 4 2 1 0 8 7,0 1 0 , 4 5 2 18 , 6 7 7 , 2 1 1 36 8 . 7 1 0 1. 5 8 50 7 Ox b o w 8o - R 3 . (1 0 ) 10 , 9 5 0 , 2 4 8 5 8 6,6 6 7 , 2 6 6 5, 3 7 8 , 0 0 7 18 5 . 3 1 7 16 9 29 0 Sh o s h o n e F a i i s 80 - R 3 (1 0 ) 2,5 4 3 , 0 1 7 4 1 88 0 , 5 6 7 1,9 1 6 , 7 5 2 99 . 2 5 4 39 0 19 3 St r i k e 80 - R 3 (1 0 ) 8, 7 9 7 , 9 3 0 . 5 0 3,3 3 8 , 5 7 3 8, 3 3 9 , 1 5 1 31 5 , 4 8 4 35 9 20 1 Sw a n F a l l s 80 - R 3 (1 0 ) 25 , 7 7 5 , 6 6 0 . 8 2 9,1 0 3 , 9 5 2 19 . 2 4 9 , 2 7 5 64 0 , 4 4 9 24 8 30 1 Tw i n F a l l s 80 - R 3 (1 0 ) 1,4 3 0 , 4 4 3 . 9 9 42 4 , 2 1 2 1,1 4 9 , 2 7 6 41 , 3 6 0 28 9 27 . 8 ìJ ~ ( " m Tw i n F a l l s ( N e w ) 8Q . R 3 (1 0 ) 15 , 6 7 8 , 4 6 2 . 5 7 5,2 5 3 . 4 1 1 11 , 9 9 2 , 8 9 8 41 7 , 4 3 5 26 6 28 7 c2 e n g ¡ ~ Th o u s a n d S p r i n g s 80 . R 3 (1 0 ) 72 9 , 1 2 2 . 9 4 71 4 , 5 1 0 87 , 5 2 5 10 , 9 7 4 15 1 80 (1 ' C ( 1 õ ' Up p e r M a l a d 80 - R 3 (1 0 ) 47 6 , 4 8 5 . 3 7 36 5 , 8 7 3 15 8 , 2 6 1 8. 2 6 3 1.7 3 19 2 ~~ z ; : Up p e r S a l m o n A BO - R 3 (1 0 ) 1,5 2 7 , 4 0 2 . 8 6 73 8 , 9 4 2 94 1 , 2 0 1 45 , 5 4 4 29 8 20 7 CO O O Z g, J ' : - Ç ) Up p e r S a l m o n B 80 - R 3 . (1 0 ) 3, 7 0 4 , 9 3 6 , 4 6 81 7 , 9 5 6 34 5 7 , 4 7 4 16 2 , 3 5 6 4.3 8 21 3 ~ - ì J . . CO ì J ( " T a l a i A c c o u n l 3 3 3 19 6 , 1 7 7 , 2 5 3 . 4 7 94 , 4 0 6 , 5 0 8 12 1 . 3 8 8 , 4 7 0 3,9 7 1 , 4 9 0 2. 0 2 30 6 ~ ( ' r : .. ':0co ID A H O P O W E R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V I V O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T , B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 , 2 0 1 1 NE T BO O K CA L C U L A T E D A N N U A L CO M P O S I T E SU R V I V O R SA L V A G E OR I G I N A L DE P R E C I A T I O N FU T U R E AC C R U A L AC C R U A L RE M A I N I N G AC C O U N T CU R V E PE R C E N T CO S T RE S E R V E AC C R U A L S AM O U N T RA T E LI F E (1 ) (2 ) (3 ) (4 ) (5 ) (6 ) (7 ) (8 ) = ( 7 ) / ( 4 ) (9 ) = ( 6 ) 1 ( 7 ) 33 4 0 0 AC C E S S O R Y E L E C T R I C E Q U I P M E N T Ha g e r m a n M a i n t e n a n c e S h o p 5O . R l . 5 (5 ) 39 , 0 6 6 . 7 5 15 , 8 5 2 25 , 1 6 8 1, 5 8 3 4. 0 5 15 . 9 Mil n e r D a m 50 - R 1 5 (5 ) 33 7 . 5 5 9 4 5 10 8 , 1 2 3 24 6 , 3 1 4 6, 8 0 2 20 2 36 2 He l l s C a n y o n M a i n t e n a n c e S h o p 5O . R 1 5 (5 ) 36 , 0 7 0 . 8 3 2,2 4 5 35 . 6 2 9 1, 1 6 6 32 4 30 5 Am e r i c a n F a f l s 5O - R 1 5 (5 ) 2, 9 9 1 . 4 1 4 4 1, 5 5 4 , 9 1 5 1. 5 8 5 , 6 8 9 57 , 3 8 2 19 2 27 5 Br o w n l e e 50 - R l . 5 (5 ) 9, 7 2 7 , 2 9 1 5 5 3,3 9 3 , 9 9 3 6,8 1 9 . 5 6 3 24 1 , 8 2 7 24 9 28 2 Bli s s 50 - R 1 5 (5 ) 2. 9 0 0 . 5 4 1 9 4 51 1 , 3 2 0 2,5 3 4 , 2 4 9 12 4 , 4 8 0 42 9 20 . 4 Ca s c a d e 5O - R 1 5 (5 ) 2. 5 3 4 , 0 2 4 3 8 45 5 , 3 5 2 2.2 0 5 . 3 7 4 69 , 3 2 0 27 4 31 8 Cle a r L a k e 5O - R 1 5 (5 ) 12 0 , 4 6 7 . 5 7 94 , 9 7 5 31 , 5 1 6 5, 3 8 8 4. 4 7 5.8 He i i s C a n y o n 5O . R 1 5 (5 ) 3,7 0 2 , 9 7 3 . 8 4 1, 0 8 9 . 9 2 9 2,7 9 8 , 1 9 4 10 4 , 8 2 2 28 3 26 7 Lo w e r M a l a d 5O - R 1 5 (5 ) 35 5 , 7 5 6 0 0 13 8 , 4 8 7 23 5 , 0 5 7 12 . 6 3 4 35 5 18 6 Lo w e r S a l m o n 50 - R 1 5 (5 ) 2, 6 4 0 , 1 8 7 1 6 55 4 , 6 5 8 2.2 1 7 , 5 3 9 11 1 , 1 5 1 4.2 1 20 0 MU n e r 5O - R 1 5 (5 ) 2, 3 4 3 , 8 0 3 . 4 2 79 1 , 3 2 3 1, 6 6 9 , 6 7 1 46 , 6 7 7 19 9 35 8 Ox b o w 5Q . R 1 5 (5 ) 3,9 4 0 , 0 8 1 . 6 7 1, 3 1 0 , 9 5 2 2,8 2 6 , 1 3 4 10 2 , 7 3 4 26 1 27 5 Sh o s h o n e F a l l s 50 - R 1 5 (5 ) 1,6 4 1 , 2 0 8 2 7 34 5 , 7 3 6 1, 3 7 7 , 5 3 3 74 , 6 2 8 45 5 18 5 5tr í k e 5O - R 1 5 (5 ) 2, 2 4 3 , 4 6 7 5 8 82 9 , 1 7 8 1, 5 2 6 , 4 6 3 81 , 9 7 1 36 5 18 6 Sw a n F a l l s ~R 1 5 (5 ) 3, 1 3 6 , 4 5 4 . 0 4 1,2 0 3 , 7 8 2 2.0 8 9 , 4 9 5 79 , 6 8 1 25 4 26 . 2 Tw i n F a l l s 50 . R 1 5 (5 ) 53 8 , 5 2 2 . 2 1 12 5 , 7 8 2 43 9 , 6 6 6 17 , 6 6 2 32 8 24 . 9 Tw i n F a l l s ( N e w ) 5Q . R 1 5 (5 ) 2, 3 4 4 . 8 3 1 . 8 1 83 3 , 8 4 7 1,6 2 8 , 2 2 6 63 , 8 9 1 2. 7 2 25 5 Th o u s a n d S p r i n g s 5Q . R l 5 (5 ) 78 5 , 0 2 2 . 7 2 84 9 , 2 8 8 17 4 , 9 8 6 22 , 4 4 1 26 6 7. 8 Up p e r Ma l a d 50 . R 1 5 (5 ) 60 3 , 9 2 3 . 9 4 15 1 , 5 2 5 48 2 , 5 9 5 24 , 1 9 5 40 1 19 9 Up p e r S a l m o n A 5Q . R 1 5 (5 ) 1, 2 0 2 , 2 0 6 . 0 1 38 3 , 4 7 6 87 8 , 8 4 0 45 , 7 7 7 3.8 1 19 2 i Up p e r S a l m o n 6 50 - R 1 5 (5 ) 94 3 , 3 4 2 . 5 1 14 4 , 7 7 5 84 5 . 7 3 5 43 , 7 4 6 4.6 4 19 3 -- To i a l A c c o u n t 3 3 4 45 , 1 0 8 , 0 4 5 . 1 0 14 , 6 8 9 , 5 1 3 32 , 6 7 3 . 9 3 6 1,3 3 9 . 9 6 0 2. 9 7 24 . 33 5 0 0 MIS C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T Ha g e r m a n M a i n t e n a n c e S h o p 95 - R 2 0 1,5 1 1 , 2 6 0 . 2 2 35 0 , 3 5 2 1,1 6 0 , 9 0 8 69 , 3 3 0 45 9 16 . 7 Mil n e r Da r n 95 - R 2 0 48 , 2 2 6 . 3 6 12 . 3 3 7 35 , 8 8 9 70 5 14 6 50 9 Ni a g a r a S p r i n g s H a t c h e r y 95 - R 2 0 74 , 5 4 8 . 6 5 22 , 6 7 8 51 . 8 7 1 1,S 8 5 21 3 32 7 He l l s C a n y o n M a i n t e n a n c e S h o p 95 - R 2 0 99 6 , 3 5 2 6 7 16 8 , 1 4 3 82 8 . 2 1 0 25 , 2 8 0 25 4 32 8 Ra p i d R i v e r H a t c h e r y 95 - R 2 0 44 , 2 6 0 . 5 5 6.0 7 3 38 . 1 8 8 1,1 7 3 26 5 32 6 Am e r i c a n F a l l s 95 - R 2 0 1. 9 4 3 , 9 3 4 . 3 8 72 2 , 3 7 9 1. 2 2 1 . 5 5 5 30 , 4 3 8 15 7 40 1 Br o w n l e e 95 - R 2 0 4,2 7 1 , 1 8 1 . 9 9 2, 3 3 5 , 9 6 9 1,9 3 5 , 2 1 3 59 , 5 1 5 1.3 9 32 5 Bl i s s 95 - R 2 . 0 77 9 , 9 2 9 . 2 6 25 0 , 5 4 4 52 9 , 3 8 5 24 . 8 3 3 31 8 21 . Ca s c a d e 95 - R 2 . 0 1, 1 1 2 , 5 9 4 0 7 43 5 , 2 1 67 7 , 5 7 3 15 , 1 6 8 13 6 44 7 Cle a r L a k e 95 - R 2 0 24 , 5 0 5 . 1 6 7, 4 6 9 17 , 0 3 6 2,8 5 3 11 6 4 60 He l l s C a n y o n 95 - R 2 0 77 9 , 8 4 1 . 9 4 34 4 , 8 1 3 43 5 , 0 2 9 13 , 8 8 4 17 8 31 3 Lo w e r M a l a d 95 - R 2 0 34 9 , 1 5 2 6 6 63 . 3 3 1 28 5 , 8 2 2 13 . 3 6 5 38 3 21 4 Lo w e r S a l m o n 95 - R 2 0 48 1 , 0 2 8 3 0 17 1 , 2 2 5 30 9 , 8 0 3 14 . 5 8 2 30 3 21 2 Mi l n e r 95 - R 2 0 65 9 , 9 4 3 0 4 15 1 , 4 5 1 50 8 , 4 9 2 9,7 9 5 1. 4 8 51 . 9 Ox b o w H a l c h e r y 95 - R 2 0 17 , 7 8 6 8 9 2,1 2 9 15 . 6 5 8 47 9 26 9 32 7 Ox b o w 95 - R 2 0 87 8 . 0 4 3 7 4 26 5 . 4 2 4 61 2 , 6 2 0 19 , 1 7 7 2.1 8 31 . 9 Pa h s i m e r o i A c c u m u l a l i n g P o n d s 95 - R 2 0 29 . 8 4 2 4 5 1,3 5 1 28 , 4 9 1 86 4 29 0 33 . 0 Pa h s i m e r o ì T r a p p i n g 95 - R 2 0 11 , 5 9 0 1 8 93 5 10 . 6 5 5 33 2 28 6 32 1 Sh o s h o n e F a l l s 95 - R 2 0 31 5 . 6 0 4 6 6 65 , 8 6 2 24 9 . 7 4 3 12 , 8 1 6 4.0 6 19 5 Si r i k e 95 . R 2 0 74 8 , 3 7 9 7 2 25 6 , 2 9 8 49 2 , 0 8 2 24 . 3 6 2 32 6 20 2 Sw a n F a l l s 95 - R 2 0 1, 4 2 6 , 0 7 4 . 3 9 42 7 , 1 7 5 99 8 . 8 9 9 33 , 4 7 4 23 5 29 8 Tw i n F a l l s 95 - R 2 0 19 7 , 3 6 2 . 3 3 36 , 9 1 6 16 0 , 4 4 6 5,6 9 6 28 9 28 2 Tw i n F a l l s ( N e w ) 95 - R 2 0 46 5 , 8 7 7 6 2 13 7 , 6 6 5 32 8 . 2 1 3 11 . 5 0 0 2.4 7 28 5 "" f - o m Th o u s a n d S p n n g s 95 - R 2 0 29 5 , 3 8 7 . 5 5 62 , 6 2 23 2 . 2 6 29 . 2 7 5 99 1 79 c! ( / g : ~ Up p e r Ma t a d 95 - R 2 0 83 , 6 7 4 0 1 56 , 1 6 6 27 , 5 0 8 1.3 6 16 0 20 6 (J ' 0 C D ë ' Up p e r S a l m o n A 95 - R 2 0 14 5 , 2 2 9 2 1 75 , 0 7 6 70 , 1 5 3 3. 3 0 6 2.2 8 21 2 ". i l Z : : Up p e r S a l m o n 6 95 - R 2 0 21 8 , 8 0 1 . 6 9 98 , 4 1 4 12 0 , 3 8 8 5. 6 9 9 26 0 21 1 CO Õ 0 Z Up p e r S a l m o i C o m m n 95 - R 2 0 1. 9 3 0 3 7 26 9 1, 6 6 1 77 3.9 9 21 6 o C I ' 0 ;: . = t ~ To t a l A c c o u n t 3 3 5 17 , 9 1 2 , 3 4 4 . 0 6 6.5 2 8 , 1 2 7 11 . 3 8 4 . 2 1 7 43 0 , 8 9 9 2. 4 1 26 4 CO " " 0 .. 0 m 3 3 5 . 1 0 MI S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T - E Q U I P M E N T 15 - S Q 0 25 , 0 3 2 . 0 1 12 , 0 6 5 12 . 9 6 7 1, 9 8 7 79 4 65 ~ 3 3 5 2 0 MIS C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T - F U R N I T U R E 20 . S Q 0 36 4 , 1 9 6 . 4 5 25 4 , 9 0 3 10 9 , 2 9 3 20 , 4 3 2 5. 8 1 53 . 3 3 5 . 3 0 MIS C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T - C O M P U T E R 5- S Q 0 12 4 , 1 6 1 2 7 66 , 5 2 9 57 . 6 3 2 17 , 6 5 2 14 . 2 2 33 000 ID A H O P O W E R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V I V O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T . B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 , 2 0 1 1 NE T BO D K CA L C U L A T E D A N N U A L CO M P O S I T E SU R V I V O R SA L V A G E OR I G I N A L DE P R E C I A T I O N FU T U R E AC C R U A L AC C R U A L RE M A I N I N G AC C O U N T CU R V E PE R C E N T CO S T RE S E R V E AC C R U A L S AM O U N T RA T E LI E (1 ) (2 ) (3 ) (4 ) (5 ) (8 ) (7 ) (8 ) - ( 7 ) / ( 4 ) (9 ) - ( 6 ) / ( 7 ) 33 6 . 0 0 RO A D S . R A I L R O A D S A N D B R I D G E S Mil n e r Da m 75 - R 3 . 0 12 . 3 7 2 1 3. 4 0 3 9, 3 3 4 19 3 15 2 48 4 Nia g a r a S p r i n g s H a t c h e r y 75 - R 3 . 0 46 , 6 6 7 . 7 2 46 , 6 7 7 (9 ) 0 Ra p i d R i v e r H a t c h e r y 75 - R 3 0 7, 1 9 7 3 9 7,1 9 7 0 0 Am e r i c a n F a l l s 75 - R 3 0 83 9 , 2 7 5 . 8 7 48 7 , 5 6 4 35 1 , 7 1 2 9.4 8 4 11 3 37 . 1 Br o w n l e e 75 - R 3 0 51 8 , 4 4 4 1 4 30 0 , 5 3 9 21 7 , 9 0 5 7,7 6 8 1.5 0 28 1 Bli s s 75 - R 3 0 48 6 , 4 7 6 . 6 4 24 1 , 6 5 8 24 4 , 8 1 9 11 , 5 0 6 23 7 21 3 Ca s c a d e 75 - R 3 0 12 2 . 6 6 8 0 4 49 , 7 0 3 72 9 6 5 1,7 6 3 1.4 4 41 4 Cle a r L a k e 75 - R 3 0 11 0 9 7 3 0 10 , 8 4 5 25 2 43 03 9 59 He l l s C a n y o n 75 - R 3 0 81 9 , 1 9 1 8 9 55 2 , 1 0 7 26 7 , 0 8 5 9,6 1 8 1.1 7 27 8 Lo w e r Ma i a d 75 - R 3 0 24 4 , 5 6 5 4 5 14 1 , 2 5 2 10 3 . 3 1 3 4.9 5 8 2.0 3 20 8 L o w e r S a l m o n 75 - R 3 0 88 , 6 9 3 0 4 55 , 1 3 8 33 , 5 5 5 1.6 0 5 18 1 20 . 9 Mi l n e r 75 - R 3 0 48 9 . 1 3 9 5 0 13 0 , 2 9 4 35 8 . 8 4 6 7.3 0 9 14 9 49 . 1 Ox b O W H a t c h e r y 75 - R 3 0 3,0 7 0 . 4 4 3,0 7 0 0 0 Ox b o w 75 - R 3 0 56 5 , 8 4 2 . 3 6 30 . 0 2 5 26 1 . 8 1 7 10 . 1 4 2 17 9 25 8 Pa h s i n i e r o i A c c t l O i u J a t i n g P o n d s 75 - R 3 0 26 , 5 0 2 7 4 21 , 9 2 8 4,5 7 5 14 7 05 5 31 1 Pa h S i r n e r o l T r a p p i n g 75 - R 3 0 15 , 6 1 2 . 3 5 15 , 2 8 5 32 7 11 00 7 29 7 Sh O S h o n e F a l l s 75 - R 3 0 51 . 3 8 3 4 0 40 , 4 2 7 10 , 9 5 6 66 4 13 3 16 0 Sl r i k e 75 - R 3 0 24 8 , 1 8 2 7 1 18 6 , 3 1 3 61 , 8 7 0 3,3 8 1 1. 3 6 18 3 Sw a n F a i l s 75 - R 3 0 83 5 . 9 4 6 1 5 38 6 , 7 7 2 44 9 , 1 7 4 15 , 5 1 8 18 6 28 9 Tw i n F a l l s 75 - R 3 0 89 3 , 7 7 3 5 0 39 6 , 0 5 1 49 7 , 7 2 2 17 . 9 5 2 2. 0 1 27 7 i Tw i n F a l l s ( N e w ) 75 - R 3 0 1, 0 2 3 , 8 2 9 . 6 4 32 1 . 4 5 7 70 2 , 3 7 3 24 , 5 8 4 24 0 28 6 CO Th o u s a n d S p r i n g s 75 - R 3 0 67 2 , 7 1 6 0 0 5S . 5 5 9 61 7 , 1 5 7 77 , 3 7 2 11 5 0 8.0 Up p e r Ma l a d 75 - R 3 0 60 , 1 1 7 6 8 35 , 8 5 4 24 , 2 6 4 1, 9 0 19 6 20 4 Up p e r S a l m o n A 75 - R 3 0 1, 6 5 0 . 8 9 83 3 61 8 38 23 0 as Up p e r S a l m o n C o m m n 75 - R 3 0 27 . 7 0 8 . 4 7 27 , 7 0 6 0 0 To t a l A c c o u n t 3 3 6 8. 1 1 2 . 4 9 0 . 5 2 3.8 2 1 , 6 5 9 4,2 9 0 . 8 3 0 20 5 , 2 8 8 2. 5 3 20 . 9 TO T A L H Y D R A U L I C P R O D U C T I O N P L A N T 67 4 , 5 6 6 , 2 0 8 . 2 2 34 5 , 0 8 1 . 8 2 6 41 4 . 8 9 4 , 8 8 1 13 , 8 3 1 , m 2. 0 5 OT H E R P R O D U C T I O N P L A T 34 1 0 0 ST R U C T U R E S A N D I M P R O V E M E N T S Sa l m o n D i e s e l SQ U A R E 0 11 , 9 5 9 . 0 8 11 , 9 5 9 0 0 Ev a n d e r A n d r e w s / D a n s k ì n # 2 SQ U A R E 0 4. 2 7 6 , 8 3 2 . 7 8 90 6 . 9 1 0 3,3 6 9 , 9 2 3 13 4 , 7 9 7 31 5 25 0 Be n n e t t M o u n t a i n SQ U A R E 0 1.4 5 8 , 3 0 3 2 8 23 4 , 8 1 5 1,2 2 3 , 4 8 8 40 . 7 8 4 2. 8 0 30 0 Ev a n d e r A n d r e w s / D a n s k i n # 1 SQ U A R E 0 1 4 2 2 , 5 0 0 . 8 5 26 6 , 7 7 8 1,1 5 5 , 7 2 3 36 , 1 1 6 25 4 32 0 To t a l A c c o u n t 3 4 1 7.1 8 ~ , 5 9 5 . 9 9 1, 4 2 0 , 4 6 2 5.7 4 9 , 1 3 4 21 1 , 6 9 7 2. 9 5 27 . 2 34 2 . 0 0 FU E L H O L D E R S Sa i m o n D i e s e l 50 . $ 2 . 5 0 61 , 3 0 6 3 9 61 , 3 0 6 0 0 E. a r i e r A n d r e w s / D a n s k i n # 2 50 - $ 2 . 5 0 68 0 , 1 7 6 5 4 96 , 5 6 5 58 1 . 6 1 2 24 , 2 1 4 3.5 6 24 . 0 Be n n e t t M o u n t a i n 50 - 5 2 . 5 0 2. 2 7 0 , 9 5 9 . 5 9 38 6 , 9 6 6 1. 6 8 3 , 9 7 4 65 . 2 2 8 28 7 28 . 9 Ev a n d e r A n d r e w s / O a n s k i n # 1 50 - S 2 5 0 1.4 3 3 , 4 2 3 . 7 1 44 4 , 0 5 7 98 9 , 3 6 7 31 , 9 1 5 2.2 3 31 . 0 To l a l A c c o u n / 3 4 2 4. 4 4 5 , 8 6 8 . 3 3 99 0 . 9 1 4 3,4 5 4 . 9 5 3 12 1 , 3 5 7 2. 7 3 28 . 5 34 3 0 0 PR I M E M O V E R S "O ~ ( ' m Ev a n d e r A n d r e w s / D a n s k i n # 2 40 $ 1 . 5 0 29 , 6 7 4 , 4 8 6 8 6 5.3 0 9 . 5 7 8 24 , 3 6 4 , 9 0 9 1, 1 1 3 , 7 1 7 37 5 21 9 II e n I I X Be n n e t t M o u n t a i n 40 - 5 1 5 0 37 , 9 8 1 . 1 1 8 . 4 0 57 9 , 9 4 9 37 . 4 0 1 . 1 6 9 1, 3 7 9 . 7 4 8 36 3 27 1 ~" t l l ~ Ev a n d e r A n ò r e w s l O a n s k i n # 1 40 - S 1 5 0 33 , 1 5 8 , 6 1 1 1 5 2,8 6 7 , 4 1 5 30 , 2 9 1 , 1 9 6 1, 0 5 4 , 3 8 5 32 1 28 5 gi I I Z ; : 50 Z To t a l A c c o ( J n t 3 4 3 10 0 , 8 1 4 , 2 1 6 . 4 1 8.7 5 8 . 9 4 2 ~2 , O 5 7 . 2 7 4 3, 5 5 7 , 8 5 0 3. 5 3 25 . 9 a! " : " 9 .. - " 0 . . 34 4 0 0 GE N E R A T O R S co " 0 ( ' .. ( ' m Sa l m o n D i e s e l 45 - S 2 0 54 1 . 5 4 4 9 5 54 1 , 6 4 5 0 0 i E v a n d e r A n d r e w s / D a n s k i n # 2 45 - 5 2 0 13 . 1 6 6 , 0 3 4 . 8 6 7,2 0 1 , 9 9 4 5,9 6 4 , 0 4 1 25 8 , 6 3 1 19 6 23 1 ..6co ID A H O P O W E R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V I V O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T , B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 , 2 0 1 1 NE T BO O K CA L C U L A T E D A N N U A L CO M P O S I T E SU R V I V O R SA L V A G E OR I G I N A L DE P R E C I A T I O N FU T U R E AC C R U A L AC C R U A L RE M A I N I N G AC C O U N T CU R V E PE R C E N T CO S T RE S E R V E AC C R U A L S AM O U N T RA T E LI F E l1 (2 ) (3 ) (4 ) (5 ) (6 ) (7 ) (8 ) " ( 7 ) 1 ( 4 ) (9 ) " ( 6 ) 1 ( 7 ) 34 4 0 0 , c o n t Be n n e t t M o u n t a i n 45 - 5 2 0 8. 1 3 9 , 9 9 9 3 5 7,8 6 8 , 2 4 4 27 1 , 7 5 5 9, 6 9 9 0. 1 2 28 0 Ev a n d e r A n d r e w s / D a n s k i n # 1 45 - 5 2 0 98 3 4 , 2 2 0 . 5 6 1, 0 7 4 6 0 4 87 5 9 , 6 1 7 29 1 , 8 9 0 29 7 30 0 To t a l A c c o u n t 3 4 4 31 . 6 8 1 , 8 9 9 . 7 2 16 . 6 8 6 . 4 8 7 14 , 9 9 5 . 4 1 3 56 0 . 2 2 0 1. 7 7 26 8 34 5 0 0 AC C E S S O R Y E L E C T R I C E Q U I P M E N T Sa l m o n D i e s e l 5O - S i S 0 29 3 . 3 4 4 . 5 6 14 7 . 8 3 3 14 5 , 5 1 2 14 5 , 5 1 2 49 6 0 10 Ev a n d e r A n d r e w s l D a n s k i n # 2 50 - S 1 5 0 11 , 2 3 4 , 2 5 0 . 8 1 58 6 . 2 6 6 10 , 8 4 7 , 9 8 5 44 2 , 8 5 1 39 4 24 0 Be n n e t t M o u n t a i n 50 . 5 1 5 0 11 , 1 5 1 , 0 9 0 . 5 0 1,4 4 9 , 8 2 6 9, 7 0 1 . 2 6 2 34 3 , 6 7 6 30 8 28 2 Ev a n d e r A n d r e w s / D a n s k i n # 1 50 - 5 1 5 0 2, 3 5 9 8 4 4 0 0 19 , 4 7 8 2, 3 4 0 , 1 6 6 77 , 8 5 0 33 0 30 . 1 To t a l A c c o u n t 3 4 5 25 , 0 3 8 , 3 2 9 . 8 7 2,2 0 3 , 4 0 5 22 . 8 3 4 , 9 2 5 1, 0 0 9 , 8 8 9 4. 0 3 22 5 34 6 0 0 MIS C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T Sa l m o n D i e s e l 35 - R Z S 0 1, 0 0 4 . 5 0 53 3 47 2 47 2 48 9 9 10 Ev a n d e r A n d r e w s / D a n s k ¡ n # 2 35 - R 2 . 5 0 1. 2 7 2 , 7 4 8 . 1 3 34 7 , 7 8 1 92 4 , 9 6 7 43 , 3 1 6 34 0 21 . 4 Be n n e t t M o u n t a i n 35 - R 2 . 5 0 91 1 , 1 2 6 6 4 10 3 , 3 6 6 80 7 , 7 6 1 30 , 8 9 5 3. 3 9 26 . 1 Ev a n d e r A n d r e w s l D a n s k i n # 1 35 - R 2 5 0 93 8 , 2 9 0 3 2 10 8 , 3 7 7 82 9 , 9 1 3 30 , 0 5 8 32 0 27 8 La n g l e y G u l c h 35 - R 2 S 0 3, 6 6 8 . 8 2 0 3,6 6 9 13 1 35 7 28 0 To l a l A c c o u n t 3 4 6 3,1 2 6 . 8 3 8 . 4 1 56 0 , 0 5 7 2, 5 5 5 , 7 8 2 10 4 , 8 7 2 33 5 24 5 i TO T A L O T H E R P R O D U C T I O N P L A N T 17 2 , 2 7 6 , 7 4 8 . 7 3 30 , 6 1 8 , 2 6 7 14 1 , 6 5 8 . 4 8 1 5, 5 6 5 , 8 8 5 3. 2 3 (0 TR A N S M I S S I O N P L A N T 35 0 2 0 LA N D R I G H T S A N D E A S E M E N T S 70 - R 3 0 30 , 5 6 3 . 8 3 0 6 6 S,6 5 3 . 5 9 8 24 , 9 1 0 , 2 3 3 42 5 . 5 9 3 13 9 58 5 35 2 . 0 0 ST R U C T U R E S A N D I M P R O V E M E N T S 65 - R 3 (3 5 ) 57 , 7 3 0 , 6 5 8 . 8 5 20 , 9 8 4 , 3 0 5 58 , 9 5 2 , 0 8 4 1,0 6 1 . 1 7 8 18 4 53 7 35 3 . 0 0 ST A T I O N E Q U I P M E N T 48 - R 1 5 (5 ) 35 3 , 4 0 5 . 8 4 9 2 0 98 , 3 1 3 , 1 8 8 27 2 , 7 6 2 , 9 5 4 7, 0 6 7 , 7 0 9 20 0 38 6 35 4 0 0 TO W E R S A N D F I X T U R E S 65 - 5 3 (1 5 ) 14 4 , 6 5 7 . 9 4 8 . 4 2 41 , 2 1 4 . 2 3 2 12 5 , 1 4 2 , 4 0 9 2,4 6 1 , 7 9 1 17 0 50 8 35 5 0 0 PO L E S A N D F I X T U R E S 60 . R 2 (8 0 ) 10 2 . 0 9 6 , 0 0 6 1 0 50 . 0 0 5 . 9 4 0 13 3 , 7 6 6 , 6 7 1 3. 0 9 8 . 3 0 8 30 3 43 2 35 6 0 0 OV E R H E A D C O N D U C T O R S A N D D E V I C E S 65 - R 2 (4 0 ) 16 9 , 7 6 2 . 0 2 4 . 1 1 52 , 6 0 5 , 5 4 4 18 5 , 0 8 9 , 2 9 0 3, 8 1 5 , 7 0 4 22 5 48 5 35 9 0 0 RO A D S A N D T R A I L S 65 - R 2 . 5 0 31 8 , 3 5 1 0 6 2S 8 , 2 4 4 60 , 1 0 7 2, 5 0 7 07 9 24 0 TO T A L T R A N S M I S S I O N P L A T 85 8 , 5 5 4 , 6 6 8 . 4 0 26 9 . 0 3 5 , 0 5 1 79 8 , 6 8 3 , 9 4 8 17 , 9 3 2 , 7 9 0 2. 9 DI S T R I B U T I O N P L A N T 36 1 0 0 ST R U C T U R E S A N D I M P R O V E M E N T S 65 - R Z 5 (4 0 ) 31 , 5 0 4 , 3 2 2 . 0 2 8, 2 1 1 , 7 0 1 35 , 8 9 4 . 3 5 0 67 3 , 2 5 0 2. 1 4 53 3 36 2 0 0 ST A T I O N E Q U I P M E N T 50 - R l (5 ) 18 6 , 2 7 5 . 3 2 3 . 0 9 45 . 3 7 2 . 4 8 2 15 0 . 2 1 6 . 6 0 7 3, 7 3 2 . 2 2 8 20 0 40 2 36 4 0 0 PO L E S . T O W E R S A N D F I X T U R E S 44 - R 1 5 (4 S ) 22 8 , 4 6 7 , 5 9 5 0 6 11 1 . 3 9 9 , 4 6 8 21 9 , 8 7 8 , 5 4 5 7.0 3 3 , 5 8 2 3. 0 8 31 3 36 5 0 0 OV E R H E A D C O N D U C T O R S A N D D E V I C E 5 45 - R 0 5 (3 5 ) 12 2 , 9 7 , 7 6 0 5 8 42 , 8 7 4 , 9 2 4 12 2 , 9 0 2 . 0 5 3 3. 6 5 8 , 7 6 9 29 8 33 6 36 6 0 0 UN D E R G R O U N D C O N D U I T 60 - R 2 (2 0 ) 48 , 3 5 2 , 4 2 1 8 9 12 , 3 8 3 , 3 7 0 4S , 6 3 9 . 5 3 6 94 2 . 9 7 5 19 5 48 4 36 7 0 0 UN D E R G R O U N D C O N D U C T O R S A N D D E V I C E S 46 - R 2 (l S ) 19 6 . 5 7 9 . 1 9 0 9 2 68 , 8 3 9 , 7 0 7 15 7 , 2 2 6 , 3 6 3 4. 4 9 , 9 3 0 22 6 35 3 36 8 . 0 0 LI N E T R A N S F O R M E R S 35 - R 1 (3 ) 42 1 , 7 2 6 , 8 1 6 . 6 8 14 0 , 2 9 3 , 2 1 6 29 4 . 0 8 7 . 4 6 5 10 , 8 8 6 , 7 6 7 25 8 27 0 36 9 . 0 0 SE R V I C E S 40 - R 2 (4 0 ) 57 , 4 7 9 , 0 3 5 . 8 6 37 , 2 5 7 , 3 2 7 43 , 2 1 3 , 3 2 3 1,4 6 3 , 7 5 8 25 5 29 5 37 0 0 0 ME T E R S 22 - 0 1 1 15 . 5 5 9 . 0 4 4 1 9 5,9 8 8 , 2 1 8 9, 4 1 5 , 2 3 6 53 7 , 9 5 0 34 6 17 5 37 0 1 0 ME T E R S - A M I 15 - 5 2 5 0 48 , 3 3 8 , 1 6 0 . 4 9 4.1 4 6 , 0 0 9 44 , 1 9 2 , 1 5 1 3, 3 6 5 . 0 2 8 69 6 13 . 1 37 1 1 0 PH O T O V O L T A I C I N S T A l l A T I O N S 12 - S 4 (2 ) 39 , 8 7 3 . 5 9 32 , 2 4 5 8, 2 6 93 6 23 5 90 37 1 2 0 IN S T A L L A T I O N S O N C U S T O M E R P R E M I S E S 17 - R 1 5 (2 ) 2, 7 1 6 , 6 6 7 . 3 7 2,1 6 5 , 9 6 6 60 5 , 0 3 5 41 , 1 5 1 1.5 1 14 7 37 3 2 0 ST R E E T L I G H T I N G A N D S I G N A L S Y S T E M S 30 . R l (2 5 ) 4 3 8 1 , 5 6 6 . 0 8 3,2 9 8 , 2 4 2 2,1 7 8 , 7 1 6 10 5 , 5 5 3 24 1 20 6 "O ~ o m ~ i i ~ ~ TO T A L D I S T R I B U T I O N P L A N T 1, 3 6 4 , 2 1 9 , 7 7 1 . 8 0 48 2 , 2 8 2 , 8 7 5 1,1 2 5 , 4 5 7 , 8 0 6 36 , 8 9 1 , 8 7 1 2. 7 0 oi Q ) z ; : GE N E R A L P L A N T .. ~ 0 Z o . 0 39 0 . 1 1 ST R U C T U R E S A N D I M P R O V E M E N T S - C H Q B U I L D I N G 10 0 - S 0 5 (5 ) 26 , 8 6 2 , 9 2 6 . 3 3 8,4 2 1 , 3 9 6 19 , 7 5 4 , 6 7 7 69 2 , 5 0 7 25 8 26 6 .. . . - . .. - " 0 . . 39 0 1 2 ST R U C T U R E S A N D I M P R O V E M E N T S . E X C L U D I N G C H Q 8 U I l D I N G 55 - S O 5 (5 ) 46 , 4 4 4 , 6 3 5 . 2 1 9,7 0 0 . 8 6 3 39 , 0 6 6 , 0 0 4 88 1 . 6 5 0 19 0 44 3 CO " 0 0 .. O m 39 0 2 0 LE A S E H O L D I M P R O V E M E N T S 35 - S 3 0 10 , 1 1 6 , 2 5 8 3 7 4,5 2 7 , 9 9 4 5,5 8 8 . 2 8 4 21 7 , 0 5 5 21 5 25 7 l 39 1 1 0 OF F I C E F U R N I T U R E A N D E Q U I P M E N T . F U R N I T U R E 20 - S Q 0 14 , 6 9 2 , 6 8 2 . 8 1 9,2 2 3 . 0 0 4 5,4 6 9 , 6 7 9 42 2 , 5 8 1 2. 8 8 12 9 ..I' 39 1 2 0 OF F I C E F U R N I T U R E A N D E Q U I P M E N T . E D P E Q U I P M E N T - C O M P U T E R S 5- S Q 0 23 , 8 4 0 , 0 3 8 . 9 3 15 , 3 4 9 , 1 6 7 8, 4 9 0 , 8 7 2 2, 6 5 1 , 3 5 1 11 1 2 32 Ò00 i~o ID A H O P O W E R C O M P A N Y SU M M A R Y O F E S T I M A T E D S U R V I V O R C U R V E S , N E T S A L V A G E , O R I G I N A L C O S T , B O O K D E P R E C I A T I O N R E S E R V E A N D CA L C U L A T E D A N N U A L D E P R E C I A T I O N R A T E S A S O F J U N E 3 0 , 2 0 1 1 39 1 2 1 39 2 . 1 0 39 2 3 0 39 2 4 0 39 2 5 0 39 2 6 0 3, , 2 7 0 39 2 9 0 39 3 0 0 39 4 0 0 39 5 0 0 39 6 0 0 39 7 1 0 39 7 2 0 39 7 . 3 0 39 7 . 4 0 39 8 . 0 0 AC C O U N T -- OF F I C E F U R N I T U R E A N D E Q U I P M E N T - E O I ' E Q U I P M E N T - S E R V E R S TR A N S P O R T A T I O N E Q U I P M E N T - A U T O M O B I L E S TR A N S P Ö R T A T I O N E Q U I P M E N T - A I R C R A F T TR A N S P O R T A T I O N E Q U I P M E N T - S M A L L T R U C K S TR A N S P O R T A T I O N E Q U I P M E N T - M I S C TR A N S P O R T A T I O N E Q U I P M E N T . L A R G E T R U C K S ( H Y D ) TR A N S P O R T A T I O N E Q U I P M E N T - L A R G E T R U C K S ( N O N - H Y D ) TR A N S P O R T A T I O N E Q U i P M E N T . T R A I L E R S ST O R E S E Q U I P M E N T TO O L S , S H O P A N D G A R A G E E Q U I P M E N T LA B O R A T O R Y E Q U I P M E N T PO W E R O P E R A T E D E Q U I P M E N T CO M M U N I C A T i O N E Q U I P M E N T . T E L E P H O N E S CO M M U N I C A T I O N E Q U I P M E N T - M I C R O W A V E S CO M M U N I C A T I O N E Q U I P M E N T . R A D I O CO M M U N I C A T I O N E Q U I P M E N T . F I B E R O P T I C MI S C E L L A N E O U S E Q U I P M E N T TO T A L G E N E R A L P L A T 31 1 0 0 31 2 2 0 31 2 . 3 0 31 4 0 0 31 5 . 0 0 31 6 0 0 31 6 5 0 BO A R D M A N S T E A M P R O D U C T I O N P L A N T ST R U C T U R E S A N D i M P R O V E M E N T S BO I L E R P L A N T E Q U I P M E N T - O T H E R BO I L E R P L A N T E Q U I P M E N T - R A I L C A R S TU R B O G E N E R A T O R U N I T S AC C E S S O R Y E L E C T R I C E Q U I P M E N T MI S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T MI S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T - M I S C E L L A N E O U S TO T A L B O A R D M A N S T E A P R O D U C T I O N P L A N T TO T A L D E P R E C I A B L E P L A T NO N D E P R E C I A B L E P L A N T 30 1 0 0 30 2 0 0 30 3 0 0 31 0 1 0 33 0 0 0 34 0 . 0 0 35 0 0 0 36 0 0 0 36 9 0 0 OR G A N I Z A T I O N C O S T S FR A N C H I S E S A N D C O N S E N T S MI S C E L L A N E O U S I N T A N G I B L E P L A N T LA N D LA N D LA N D LA N D LA N D LA N D TO T A L N O N D E P R E C I A B L E P L A T TO T A L E L E C T R I C P L A N T LI F E S P A N P R O C E D U R E I S U S E D C U R V E S H O W N I S i N T E R I M S U R V I V O R C U R V E ;r ! - Q ~ I D A H O N O N . A M I B E I N G A M O R T I Z E D P E R O R D E R # 3 0 8 2 9 u: e n t i - : (1 a l ( 1 2 : N O T E ' A c c r u a l r a l e s f o r t h e L a n Q i e y G u l c h P l a n t w h e n p l a c e d i n s e r v i c e J u n e 2 0 1 2 w i ! b e a s f o l l o w ~ i s ~ Z A c c o u n t ~ So S " : . 9 3 4 1 0 0 3 3 9 % . - " 0 . . 3 4 2 0 0 3 . 4 4 % u: ~ Ç ) 3 4 3 0 0 3 . 6 4 % .. m 3 4 4 0 0 3 . S 1 % .: 3 4 5 0 0 3 5 2 % '' L 3 4 6 0 0 3 7 2 % ai SU R V I V O R CU R V E (2 8.L 2 12 . L 2 10 - 5 2 5 12 . L 2 12 . L 2 20 - L 2 20 - L 2 3S . S 1 25 - S Q 20 . S Q 20 . S 0 20 - 0 1 15 . S 0 15 . S Q 1S . S 0 10 - S Q 1S . S 0 10 0 - 5 1 60 . R l . 5 2S . R 3 45 - 5 1 80 - 5 1 5 45 - R O S 12 . L 2 NE T SA L V A G E PE R C E N T~o 15 50 15 15 15 LS 15 o o o 30 o o o o o (5 ) (1 5 ) 20 (1 5 ) (1 ) (2 ) 15 80 0 K OR I G I N A L DE P R E C I A T I O N CO S T RE S E R V E (4 ) (5 ) 4,8 1 0 , 5 7 1 7 6 1, 7 1 6 , 4 0 6 86 7 . 0 1 4 8 7 12 3 , 7 0 2 2. 5 8 0 . 2 1 9 . 7 4 1.3 6 , 9 8 9 18 , 6 2 5 . 5 1 4 . 3 8 6.5 1 4 . 0 8 3 75 2 , 1 2 4 8 7 39 9 . 6 5 8 29 . 1 7 7 . 5 6 4 6 0 8.6 0 7 . 8 1 9 4, 4 3 1 , S 7 4 2 8 1, 9 8 4 , 5 0 2 4,1 6 8 , 1 7 4 . 4 4 1, 4 1 5 , 0 2 2 1, 5 2 7 , 2 6 8 . 6 3 54 8 , 8 0 0 5,7 6 7 . 9 4 1 7 2 2,5 9 0 , 1 0 0 12 , 2 7 3 . 5 6 3 6 1 5,9 0 0 , 3 7 1 9, 9 2 5 . 1 5 6 5 1 4,0 4 6 , 5 5 7 6. 0 9 1 , 9 9 5 8 3 3,9 5 0 . 7 3 7 19 , 8 0 4 , 9 0 9 . 3 0 9. 3 3 7 , 4 1 4 3, 2 2 1 , 5 5 0 . 7 9 1. 8 5 2 , 1 6 3 2,6 1 4 , 2 3 7 . 1 8 1,2 7 9 , 5 3 3 4,8 2 8 , 2 5 3 7 3 2, 1 7 0 , 3 9 1 25 3 , 2 2 4 , 1 7 9 . 8 9 10 0 , 7 9 6 , 2 9 1 13 , 8 0 9 , 7 4 3 0 0 11 , 5 4 9 , 0 9 3 35 , 6 0 8 , 4 2 1 8 2 27 , 4 4 5 , 6 6 6 1. 7 2 9 , 4 5 2 2 0 82 1 . 5 9 6 13 , 8 6 3 , 9 4 5 5 8 6, 1 7 8 , 9 7 9 4.6 2 3 , 6 8 3 . 6 4 3, 3 2 9 , 9 7 5 1, 7 4 8 , 5 0 2 . 8 3 95 3 , 3 3 2 41 5 8 5 3 9 20 , 6 3 5 71 , 4 2 5 , 3 3 4 . 2 8 52 . 2 9 9 . 2 7 6 4,2 3 0 . 8 1 1 , 6 0 1 . 1 0 1,7 5 2 , 8 0 9 , 0 6 6 5,7 0 3 0 1 23 . 2 0 3 , 3 9 0 . 3 2 28 , 4 1 7 , 4 3 2 9 2 1, 0 7 3 7 4 9 1 7 30 , 1 1 9 , 0 9 4 7 4 2,6 9 0 , 0 0 6 4 6 4,1 5 0 , 6 2 3 4 6 4.7 4 0 , 2 8 5 9 3 14 1 6 8 , 9 8 3 4 9 56 , 9 4 2 , 7 4 3 , 2 5 4,2 8 7 , 7 5 4 , 3 4 4 . 3 5 1,7 5 2 , 8 0 9 , 0 8 6 CA L C U L A T E D A N N U A L FU T U R E AC C R U A L AC C R U A L AC C R U A L S AM O U N T RA T E ~ (7 ) (8 ) = ( 7 ) 1 ( 4 ) 3,0 9 4 , 1 6 6 53 9 , 8 2 0 11 2 2 44 3 , 2 6 1 50 . 0 0 0 75 0 15 3 , 1 2 1 44 , 5 9 8 1 7 3 9,3 1 7 . 6 0 4 1, 3 7 1 , 4 2 6 7. 3 6 23 9 . 6 4 8 26 . 5 2 6 35 3 16 . 1 9 3 , 3 1 1 1. 0 8 , 3 8 1 4. 1 4 1. 7 8 2 . 3 3 6 14 2 . 1 3 9 32 1 2.1 2 7 , 9 2 6 87 , 4 9 1 21 0 97 8 , 6 6 9 50 , 3 6 4 33 0 3,1 7 7 8 4 2 23 8 , 4 4 0 41 3 6. 3 7 3 . 1 9 3 52 6 , 3 5 9 42 9 2. 9 0 1 . 0 5 4 16 4 , 7 4 7 16 6 2, 1 4 1 , 2 5 9 25 8 , 9 5 2 42 5 10 , 4 6 7 , 4 9 5 1.0 6 4 , 8 7 6 53 8 1, 3 6 9 , 3 6 8 17 1 , 1 7 5 53 1 1,3 3 4 , 7 0 4 20 6 , 4 2 0 7. 9 0 2, 6 5 7 , 8 6 3 25 1 , 0 5 2 52 0 14 3 , 1 5 2 , 3 1 8 11 , 2 8 7 , 8 9 0 4,4 5 2,9 5 1 , 1 3 7 31 5 , 1 0 9 22 8 13 . 5 0 4 , 0 1 9 1, 4 7 5 , 7 0 2 4.1 4 58 1 , 9 6 6 47 . 1 1 4 27 2 7, 7 8 4 , 5 5 8 86 9 . 4 9 7 62 7 1,3 3 9 , 9 4 5 14 5 , 8 2 2 3. 1 5 83 0 , 1 4 1 93 , 1 5 5 53 3 14 . 7 1 3 2, 1 2 9 S1 2 28 . 9 8 8 , 4 T 9 2, 9 4 8 , 5 2 8 4.1 3 3, 1 1 8 , 5 2 8 , 1 1 5 11 1 , 1 3 7 , 3 6 9 2.6 3 3, 1 1 8 , 5 2 8 , 1 1 5 11 1 , 1 3 7 , 3 6 9 CO M P O S I T E RE M A I N I N G LIF E (9 ) = ( 6 ) 1 ( 7 ) 57 8.9 3468 90 13 4 12 5 24 3 19 . 4 13 3 12 1 17 683 9.8 80 65 10 . 6 9492 11 9 8.9 92 89 89 ~i-11 SERVICE LIFE STATISTICS Exhibit No. 1 Case No. IPC-E.12-0S J. Spanos,lPC Page 53 of 491 ti E-ti::ri CJ ;:H !3~ CJ~ri ~~E-0 ~i:;:8:Hi:;::z Q !30 CJ ~ ti ~Q :iJï~E-8:00i-0i::zti00 ~N Q Q 0 ~H rlM .: E-~ Š H CJ0H CJ ~ CJ 0i: g.-,, .. ¡ UJ f-IUZ I z uJUJ _.., i i: uJ! UJ u, ¡ ~:5: l W Q.''001-- iRR M 'f01'o Cl.,"'- i .¡ ¡ UJ::! I i:i::i U-l ~i ci I Z I ..l: ë2 i !0 -- g; ~~ oOJ o00 oto o(. (Ici"'w0)0m Z Wø"' o-. ocr oN o.- oo-00ov:o00 o..o'0 o-.of'or-"o'-o ÐNII\II\l:inS lN3Jtl3d ~i-12 Exhibit NO.1 Case No. IPC-E-12-0S J. Spanos, IPC Page 54 of 491 IDAHO POWER COMPANY ACCOUNT 310.20 LA AN WATER RIGHTS ORIGINAL LIFE TABLE PLACEMENT BAN 1974 -2010 EXPERIENCE BAND 2003-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 325,847 0.0000 1.0000 100.000.5 6,871 0.0000 1. 0000 100.00 1. 5 6,871 0.0000 1. 0000 100.002.5 6,871 0.0000 1.0000 100.003.5 6.871 0.0000 1.0000 100.004.5 6,871 0.0000 1.0000 100.005.5 6.871 0.0000 1.0000 100.006.5 6,871 0.0000 1.0000 100.007.5 100.008.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 5,620 0.000024.5 5,620 0.000025.5 5.620 0.000026.5 5.620 0.000027.5 5,620 0.000028.5 196,145 0.0000 29.5 196,145 0.000030.5 196,145 0.000031.5 190,524 0.000032.5 190,524 0.000033.5 190,524 0.000034.5 190,524 O. 000035.5 190,524 0.000036.5 111-13 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 55 of 491 (J E-Z(L;:(J (L (L:;:;0 f5iiP-u;:H ii;:g~ Q HP- ~:;;:ii0(J ::u (L (Jiiii:::r (L E-E-::U 00::0P-ii ;: E-(J0(J ~~Q 0H0 ,..-.i.-Zr'H0E-H Š ii00Uui: iI..i LJ i-IUz! Z UJl ~ :E 1 a: UJ¡ LJ Ui Q. :s ¡ ¡; Q.ioo, i- ..100,,"N;ÓMi co ,. 10\0\.... I . UJ I ;:a:~u I .. I C(~z tf!§,.í I a:0 0¡..._..~.~ c:S,0 /i . .. oo oûl '-too00 o(',Jo"~o('oo-t ÐNIAIA~ns IN3:)~3d g,. 8 oco or- oto (fcrc: UJorU' z UJ C)c: o~ g oN o,. oo ~i-14 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 56 of 491 IDAHO POWER COMPANY ACCOUNT 311. 00 STRUCTURES AN IMPROVEMENTS PLACEMENT BAN 1973 -2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 1l.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 89,378,594 106.223,722 101,923,511 98,881,060 97,928,883 97,440,440 131,634,279 131,316,177 130,184,068 129,601,368 129,341,817 129,140,880 128,997,833 127,797,926 127,596,054 127,442,582 126,594,037 125.480,809 124,905,570 123,557, 112 121.819,377 121,661,994 120,883,399 120,739,999 120,531,748 119,781,251 95,799,313 95,610,232 94,844,267 93,228,416 66,625,381 53,266,442 34,178,791 34,030,248 33,972,504 33,794.411 33,719,798 83,167 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 100,846 75,201 16,931 228,015 23,234 360.666 187,081 147,779 200.937 47,730 101,767 28,350 270,331 22,750 49,879 25,862 79,747 301 41,652 27,217 122,549 1,072,033 944,487 86,128 12,092 148,543 57,744 178,094 74,612 46,134 ~i-15 EXPERIENCE BAN 1980-2010 RETMT RATIO 0.0000 0.0009 0.0000 0.0008 0.0002 0.0023 0.0002 0.0027 0.0014 0.0011 0.0016 0.0004 0.0008 0.0002 0.0000 0.0000 0.0021 0.0002 0.0004 0.0000 0.0002 0.0007 0.0000 0.0000 0.0000 0.0003 0.0003 0.0013 0.0113 0.0101 0.0013 0.0002 0.0043 0.0017 0.0052 0.0022 0.0014 0.0000 SURV RATIO 1. 0000 0.9991 1. 0000 0.9992 0.9998 0.9977 0.9998 0.9973 0.9986 0.9989 0.9984 0.9996 0.9992 0.9998 1.0000 1. 0000 0.9979 0.9998 0.9996 1.0000 0.9998 0.9993 1.0000 1.0000 1.0000 0.9997 0.9997 0.9987 0.9887 0.9899 0.9987 0.9998 0.9957 0.9983 0.9948 0.9978 0.9986 1. 0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 99.91 99.91 99.83 99.81 99.58 99.56 99.29 99.14 99.03 98.88 98.84 98.76 98.74 98.74 98.74 98.53 98.51 98.47 98.47 98.45 98.39 98.39 98.39 98.39 98.35 98.33 98.20 97.09 96.11 95.98 95.96 95.54 95.38 94.88 94.67 94.54 94.54 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 57 of 491 uii:lïii ~~ ui ~ ~~ Ulï ii ~ æ 0 ~ 2: ~:E 0 ~o lï ::U E- ui ~ j t;is i: 0~ ~i: uio lï ~ ~ ~H o §rl H N CJrl Hl" i:o E- So()()i: i.. I UJ ~I~Z I UJ ~ -.i0: Lú I~Šl Lú ci¡OO,-..iOO i~'"O"t00 '"O' O'--. W;:0:::U t ..c(Z ~- sa0:I00ID .'~ ~;. // V =1 r g o(l oCO oI'oto o."~on oN o ÐNll\ll\èlnS lN38l:3d oo ocr o00 or- oto (J0:-:W0)-i. Z WG.i o-. o(" oN o.. oo /1-16 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 58 of 491 IDAHO POWER COMPANY ACCOUNT 312.10 BOILER PLANT EQUIPMENT -SCRUBBERS ORIGINAL LIFE TABLE PLACEMENT BAND 1974 -2010 EXPERIENCE BAND 1980-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 75,019,386 0.0000 1. 0000 100.000.5 84,280,111 0.0000 1.0000 100.00 1. 5 80,536,407 0.0000 1.0000 100.002.5 80,028.140 0.0000 1.0000 100.003.5 80,019,870 62,337 0.0008 0.9992 100.004.5 79,889,042 44,470 0.0006 0.9994 99.925.5 79,732,824 11.455 0.0001 0.9999 99.87 6.5 79,423,629 147,868 0.0019 0.9981 99.857.5 78.660,890 45,030 0.0006 0.9994 99.678.5 78.615,860 0.0000 1.0000 99.61 9.5 78,493,610 364,100 0.0046 0.9954 99.61 10.5 78.129,510 107,676 0.0014 0.9986 99.15 11.5 78,021,83.5 47,889 0.0006 0.9994 99.0112.5 77,973,946 202,640 0.0026 0.9974 98.95 13 .5 77,330,372 0.0000 1.0000 98.69 14.5 77,164,991 38,194 0.0005 0.9995 98.6915.5 77,021,971 190,994 0.0025 0.9975 98.6416.5 76,718,577 257,948 0.0034 0.9966 98.40 17.5 76,255,139 0.0000 1.0000 98.0718.5 76.012,696 0.0000 1.0000 98.07 19.5 63,786,339 0.0000 1.0000 98.0720.5 63,786,339 0.0000 1.0000 98.07 21. 5 63,786,339 0.0000 1.0000 98.0722.5 51,864,181 528,382 0.0102 0.9898 98.0723.5 28,540.569 0.0000 1.0000 97.0724.5 28,540,569 130.223 0.0046 0.9954 97.0725.5 9.221.391 0.0000 1.0000 96.6326.5 9,221,391 0.0000 1.0000 96.6327.5 9,221,391 0.0000 1.0000 96.6328.5 9,221.391 0.0000 1.0000 96.63 29.5 9,221,391 1,616 0.0002 0.9998 96 .63 30.5 9,219,775 0.0000 1.0000 96.61 31. 5 96.61 111-17 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 59 of 491 i:ri:ii;0 Ulri i;:; Z ~ri:E (J p.i:H::::0 ~0 :;i:Hp.:;:E i;i:0 ~ ::(J Ul i:,.:irip.i;~i:00ri0p.,.:E Ul0H ~ 0 0II ~0H 0 ,.C' ~C'rl H C'C9H i;i: S 0 0(J(Ji: -. . LU I-Uz Z LULU ~- ¿, ci LULU U~S.LU CL00.,. ..;00;NNi6~'i; f' i00 '" ,.. .. ~.! ~ iu..L1"C .Z r-t5 0: I 20 0,~.~.~.-i. c: ~~ V// !J .. ,(.. f :5 &l oC'~oc(J 12 c-eo otf c..oC" ÐNll\ll\tlnS lN3~tl3d :5.- a: o00 or- o(0 encrc:W0;;LOZ W C'c: o.. oC" oN o.- oo 111-18 Exhibit No. 1 Case No. IPC.E-12-0S J. Spanos, IPC Page 60 of 491 IDAHO POWER COMPANY ACCOUNT 312.20 BOILER PLANT EQUIPMENT -OTHER ORIGINAL LIFE TABLE PLACEMENT BAN 1974-2010 EXPERIENCE BAN 1980-2010 AGE AT EXPOSURES AT RETIREMENTS peT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 395,146,363 14.163 0.0000 1.0000 100.000.5 414,426,610 84,667 0.0002 0.9998 100.00 1. 5 402,327,716 2,961,463 0.0074 0.9926 99.982.5 380,738,167 292,219 0.0008 0.9992 99.243.5 357,526,393 306,537 0.0009 0.9991 99.164.5 343.002.311 1,795,966 0.0052 0.9948 99.085.5 412,082,592 1,554,012 0.0038 0.9962 98.566.5 394 , 001, 720 1,910,179 0.0048 0.9952 98.197.5 375,856,713 2,128,592 0.0057 0.9943 97.718.5 366,204,204 2,302,412 0.0063 0.9937 97.16 9.5 357,573.133 318,259 0.0009 0.9991 96.5510.5 355,609,211 655,268 0.0018 0.9982 96.4611.5 353,719,757 1.527,736 0.0043 0.9957 96 .2812.5 350,934,888 4.066,324 0.0116 0.9884 95.8713.5 344,315,206 2,648,837 0.0077 0.9923 94.7614.5 337,522,289 2,116,682 0.0063 0.9937 94.0315.5 333,789,090 589,460 0.0018 0.9982 93.4416.5 327,158,535 379,993 0.0012 0.9988 93.2717.5 320,892,730 3,052,251 0.0095 0.9905 93.1718.5 316,469,674 147,135 0.0005 0.9995 92.28 19.5 307,980,791 2,035,903 0.0066 0.9934 92.2420.5 305,934,531 722,480 0.0024 0.9976 91.6321.5 304,240,974 59,443 0.0002 0.9998 91.4122.5 302,587,715 3,701,943 0.0122 0.9878 91. 3923.5 292.190,887 2,.162,903 0.0074 0.9926 90.2724.5 287.721,821 719,984 0.0025 0.9975 89.6125.5 21B, 685, 811 368,820 0.0017 0.9983 89.3826.5 218,247,415 2.193,099 0.0100 0.9900 89.2327.5 213,772,761 6,279,818 0.0294 0.9706 88.3328.5 206,485,521 5,521,968 0.0267 0.9733 85.74 29.5 150,172,953 2,617,305 0.0174 0.9826 83.4530.5 118,697,503 383.547 0.0032 0.9968 81.99 31. 5 80,313,236 1,042,594 0.0130 0.9870 81.7332.5 79,270,642 0.0000 1.0000 80.6733.5 79,270.642 0.0000 1.0000 80.6734.5 79,270,642 8,850,395 0.1116 0.8884 80.6735.5 70.420,247 7.697,612 0.1093 0.8907 71.6636.5 63.83 IH-19 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 61 of 491 (J ~u..H ~(Jri i :; E-f3zUti::i:::0.0 ~H :;::H 0.a :;:;ti p¡0 ::u E-(J p¡j :iriE-:s 0.0000.i:::ri (J0.. ~H ~0QiiH ..0 .iMzHN0rlH M p¡0E- S0uu.i --~,-,--- ! .. : t: .. ¡ z as'l~L. i: UJ!wu¡~S! W 0- j ;: ¡g i;a ~~ I I,....! Q\ 0'i '" 0\I.. .. ¡ . I LU I ;:i: ! ::u i ..-: ¡:: i 8 i et0 tv ? CY lJ ,L.N c:;:/0.../~V~~//.V... ¡ t I. oo o0)o00 o¡-oto oli o'"o("-"J oot" ÐNll\lAHOS l.N3~H3d oi. oto o-a C/i:ctw0)-MZ W"ct oN o.. 00 ~i-20 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 62 of 491 IDAHO POWER COMPANY ACCOUNT 312.30 BOILER PLANT EQUIPMENT -RAILCARS ORIGINAL LIFE TABLE PLACEMENT BAN 1991-2008 EXPERIENCE BAN 1991-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL o. a 4.458.753 0.0000 1.0000 100.000.5 4.458,753 O. 0000 1. 0000 100. 00 1. 5 4,458,753 O. 0000 1.0000 100. 002.5 4,458.475 0.0000 1. 0000 100.003.5 4.227,864 O. 0000 1. 0000 100.004.5 4,167,658 0.0000 1. 0000 100. 005.5 4,167,658 0.0000 1. 0000 100.006.5 4,167,658 122,239 0.0293 0.9707 100.007.5 4,045,418 0.0000 1.0000 97.078.5 4,045,418 0.0000 1.0000 97.07 9.5 4,045,418 0.0000 1.0000 97.0710.5 4,045.418 0.0000 1. 0000 97.0711.5 4,045,418 128.583 0.0318 0.9682 97.0712.5 3,916,835 0.0000 1.0000 93.9813.5 3,916,835 0.0000 1.0000 93.9814.5 3,852,117 0.0000 1.0000 93.9815.5 3,329,128 0.0000 1.0000 93.9816.5 3,020,382 0.0000 1. 0000 93.9817.5 3,019,476 0.0000 1.0000 93.9818.5 2,478,478 0.0000 1.0000 93.98 19.5 93.98 ~i-21 Exhibit No. 1 Case No. IPC-E-12-08 J. Spnos, IPC Page 63 of 491 C/ C/ ~ w § ~::u i: i;H?i:::C/ i:o :; E- ~ ~çi W:E Zo wu 8 ri ix :: ~ ~ b &: ~ o 0 C/~ 0 s o ~ ~H M ,. E- ~§ H o CJu ~;¡ 0 r-_.~. ltj"" ~f-izffzt;¡~:L !::L I ff tJ ff tJ,0.:5 0.:5Ix x . íWo. wo. iss ss0000NN NNI i i I Iig~ ~~i ~ 0'. a- a-1,... ..~ I ...,wI~ ¡;: ¡U .. ¡..f. ¡ ~Z i i ,.~~ i ë2 I 0 -:..S0.- /V ~k(..l ;/.. ......~ I ~ .1".. ao o':J o00 o..o~o('~ogoU)g ÐNIAIAtiOS .LN3;)tl3d g.- o0) o00 o.. o(, (Ja:4;w0)-Lf Z w Cì'C o'1 oC' oN o.- 00 111-22 Exhibit NO.1 Case No. IPC-E-12-0S J. Spanos, IPC Page 64 of 491 IDAHO POWER COMPANY ACCOUNT 314.00 TURBOGENERATOR UNITS ORIGINAL LIFE TABLE PLACEMENT BAND 1974 -2010 EXPERIENCE BAN 1980-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 135,766,059 0.0000 1.0000 100.000.5 131,157,320 0.0000 1.0000 100.00 1. 5 125,885,580 47,596 0.0004 0.9996 100.002.5 118,750.455 186,207 0.0016 0.9984 99.96 '3.5 111,828,637 35,542 0.0003 0.9997 99.814.5 111,332,591 1,036,494 0.0093 0.9907 99.775.5 132.922,486 18.821 0.0001 0.9999 98.846.5 128,621,990 141.028 0.0011 0.9989 98.837.5 119,093,381 92,458 0.0008 0.9992 98.728.5 117.747,325 172.735 0.0015 0.9985 98.65 9.5 115,038.383 301,204 0.0026 0.9974 98.5010.5 114,482,269 423,807 0.0037 0.9963 98.2411.5 114.010,286 411,640 0.0036 0.9964 97.8812.5 111,080.161 491,542 0.0044 0.9956 97.5313.5 109,433,527 1,657,955 0.0152 0.9848 97.0914.5 102,078,792 0.0000 1.0000 95.6215.5 101,709.992 1,883,770 0.0185 0.9815 95.6216.5 99,222,624 3,273,076 0.0330 0.9670 93.8517.5 94,498,748 1,170,281 0; 0124 0.9876 90.7618.5 92,992,806 84,999 0.0009 0.9991 89.63 19.5 83,843.224 280,076 0.0033 0.9967 89.5520.5 82,966,590 186,055 0.0022 0.9978 89.2521.5 82,607,030 0.0000 1.0000 89.0522.5 82,582,403 6,094 0.0001 0.9999 89.0523.5 82,573,184 2,653,581 0.0321 0.9679 89.0424.5 79,674,730 2,301,328 0.0289 0.9711 86.1825.5 55,958.904 1.033,427 0.0185 0.9815 83.6926.5 54,895,589 834,286 0.0152 0.9848 82.1527.5 53.864.160 2,518,075 0.0467 0.9533 80.9028.5 51,333,984 460,217 0.0090 0.9910 77.12 29.5 36.952,605 3,275.696 0.0886 0.9114 76.4330.5 25,405,658 128,202 0.0050 0.9950 69.65 31. 5 19,172,874 2,571 0.0001 0.9999 69.3032.5 19,170,303 447,321 0.0233 0.9767 69.2933.5 18,719,053 472.366 0.0252 0.9748 67.6734.5 18,246,687 380,682 0.0209 0.9791 65.9735.5 17,866,005 0.0000 1.0000 64.5936.5 64.59 111-23 Exhibit No. 1 Case No. IPC-E-12-08 J.. Spanos, (PC Page 65 of 491 IDAHO POWER COMPANY ACCOUNT 314.00 TURBOGENERATOR UNITS ORIGINAL LIFE TABLE PLACEMENT BAN 1974-2010 EXPERIENCE BAND 1996 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 68.315,013 0.0000 1.0000 100.00 0.5 51,026,283 0.0000 1.0000 100.00 1. 5 46,183,592 0.0000 1.0000 100.00 2.5 40,542,934 186,207 0.0046 0.9954 100.00 3.5 33,171.800 0.0000 1. 0000 99.544.5 43,210,879 0.0000 1.0000 99.545.5 42,256.071 0.0000 1.0000 99.54 6.5 38,230,685 0.0000 1.0000 99.547.5 28,867,731 15,605 0.0005 0.9995 99.548.5 27.601,652 0.0000 1.0000 99.49 9.5 26,642,125 0.0000 1.0000 99.49 10.5 49,432,852 332.846 0.0067 0.9933 99.49 11.5 49,101,927 0.0000 1.0000 98.82 12.5 47,119,985 479,474 0.0102 0.9898 98.8213.5 45,522,108 12,093 0.0003 0.9997 97.81 14.5 54,881,576 0.0000 1. 0000 97.79 15.5 64,091.354 1,839,072 0.0287 0.9713 97.79 16.5 73,428.039 434,758 0.0059 0.9941 94.98 17.5 71,542,481 55,016 0.0008 0.9992 94.42 18.5 71,155,734 84,999 0.0012 0.9988 94.34 19.5 62,825,220 257,649 0.0041 0.9959 94.2320.5 62,106,163 79,845 0.0013 0.9987 93.85 21.5 82,607,030 0.0000 1.0000 93.7222.5 82.582,403 6,094 0.0001 0.9999 93.7223.5 82,573,184 2,653.581 0.0321 0.9679 93.72 24.5 79.674,730 2,301,328 0.0289 0.9711 90.7125.5 55,958,904 1,033,427 0.0185 0.9815 88.09 26.5 54,895,589 834,286 0.0152 0.9848 86.46 27.5 53,864,160 2,518,075 0.0467 0.9533 85.1528.5 51,333,984 460,217 0.0090 0.9910 81.17 29.5 36,952,.605 3.275,696 0.0886 0.9114 80.44 30.5 25,405,658 128,202 0.0050 0.9950 73.31 31. 5 19,172.874 2.571 0.0001 0.9999 72.9432.5 19,170,303 447.321 0.0233 0.9767 72.93 33.5 18,719,053 472,366 0.0252 0.9748 71.2334.5 18,246,687 380,682 0.0209 0.9791 69.4335.5 17,866,005 0.0000 1.0000 67.98 36.5 67.98 111-24 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 66 of 491 f- ~:i0. tiH iï :: ~ g 15 () ()H i: ~ ~ ~,: () H 0. iï ~:i i- i:o iï ::() :: ti i: i: ::iï 0 f-:; ti 0o ti 00. iï :i o ~ ti,: ~ 0 ~H 0 U1 ~rl HM Cl ~ ~:: 0o() ~ . , ~ ;ct::U.. ~ §cto,._- W f-Uzzw !: :E .ct w 'lt 5 ~ 0-00.. ..00NNi ,O"fco "CJ CJ.... l( "' " : Io. i. oi i~~ v/ Vj,: . .. .. oo ooeno00or-oco ¡¡o..or'o(" ÐNll\ll\tlnS IN38tl3d 8 o0) o00 or- o'- (jcic:W0:;It) Z Woc: o.. g oN o.. 00 ~i-25 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 67 of 491 IDAHO POWER COMPANY ACCOUNT 315.00 ACCESSORY ELECTRIC EQUIPMENT PLACEMENT BAN 1974 -2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11. 5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 40.742,398 48,454,013 47,569,423 46,440,378 46,140,509 45,928,969 62,804,024 62,776.298 62,646,836 62,576,069 62,459,206 62,428,886 62,145,988 62,065,274 62,055,657 61,887,123 61,806,219 61,353,411 61,213,090 61,097,589 60,497,936 60,474,028 59,671,376 59,667,743 59,667,743 59,005,003 43,995,066 43,959,561 43,090.505 42.272,899 28,630,400 24,526,590 16,434,254 16,434,254 16,410,778 16,354.823 16,263,695 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 121,024 3,161 115,789 70,768 68,986 30.320 199.352 4,199 2,586 56,693 375,053 86.450 16,124 175,057 14,566 595.484 1,804,301 8,363 726,394 817,444 739,379 160,569 25,455 21,047 55,955 91.128 44.768 111-26 EXPERIENCE BAND 1980-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0000 0.0000 0.0026 0.0001 0.0018 0.0011 O.OOll 0.0005 0.0032 0.0001 0.0000 0.0009 0.0000 0.0061 0.0014 0.0003 0.0029 0.0002 0.0098 0.0000 0.0000 0.0000 0.0306 0.0002 0.0165 0.0190 0.0175 0.0056 0.0010 0.0000 0.0013 0.0034 0.0056 0.0028 SURV RATIO 1.0000 1. 0000 1.0000 1.0000 1. 0000 0.9974 0.9999 0.9982 0.9989 0.9989 0.9995 0.9968 0.9999 1.0000 0.9991 1.0000 0.9939 0.9986 0.9997 0.9971 0.9998 0.9902 1.0000 1.0000 1. 0000 0.9694 0.9998 0.9835 0.9810 0.9825 0.9944 0.9990 1.0000 0.9987 0.9966 0.9944 0.9972 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 100.00 100.00 100.00 99.74 99.73 99.55 99.44 99.33 99.28 98.96 98.95 98.95 98.86 98.86 98.26 98.12 98.09 97.81 97.79 96.83 96.83 96.83 96.83 93.87 93.85 92.30 90.55 88.96 88.46 88.37 88.37 88.26 87.96 87.47 87.23 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 68 of 491 f-Zfì;: AiH::0fì CIfìf- :: ~ g;,. uAii:;:i:0 ~fì :::;H Ai 0 :::i Ai g;0U CI CI::i:0 ::fì fì f-:;~000 Ai ,.:E,.CI0fì ~U Q CI ~Q HH;:,..:0 z0Ht1\0 H~i:l'0 f- S0uu.: I..u. l-i t: I-izz ~z: i UJ UJ ~~:¡-:E i ff tJ a: wwu'0- S ~S I~ 0- W 0-,00 00.. ..--00 00NNNN16+.. +,co !'0\ l"I 0' a-a- a-.. ..--... w , 5':: i u wh I ..-c ~~ I Zft3i ë20 ~f). - --_.~-------~-- -= :;1" (~ . V/ ll ..... ~/. .." . ..4....,~ ;¡ .............. .. ...- l:... ... ... ~c;8 oo00ai'oIfoto o"'o("oN ÐNIJ\ll\èlnS IN3:Jèl3d g.. 8 ~ or- or. (fa:o:w0;:in Z WtJo: o"T ot" oN o.. oo ~i-27 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 69 of 491 IDAHO POWER COMPANY ACCOUNT 316.00 MISCELLAEOUS POWER PLANT EQUI PMENT ORIGINAL LIFE TABLE PLACEMENT BAN 1974 -2010 EXPERIENCE BAND 1980-2010 AGE AT EXPOSURES AT RETIREMENS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 15,791,802 0.0000 1.0000 100.000.5 15,302,600 61,505 0.0040 0.9960 100.00 1. 5 15,205,841 172,428 0.0113 0.9887 99.602.5 13,976,154 9,567 0.0007 0.9993 98.473.5 11,950,424 49,314 0.0041 0.9959 98.404.5 11,472,430 248,255 0.0216 0.9784 98.00 5.5 12,629.136 380,678 0.0301 0.9699 95.876.5 11,730,944 245,253 0.0209 0.9791 92.987.5 11,274.513 60,333 0.0054 0.9946 91. 048.5 11.179,512 232,028 0.0208 0.9792 90.55 9.5 10,931.863 165,685 0.0152 0.9848 88.6710.5 10,766,177 130,356 0.0121 0.9879 87.33 11. 5 10,635,822 51,127 0.0048 0.9952 86.27 12.5 10,560.923 64,426 0.0061 0.9939 85.8613.5 10,422,413 85,485 0.0082 0.9918 85.33 14.5 10,231,350 28,475 0.0028 0.9972 84.63 15.5 9,871,360 31,360 0.0032 0.9968 84.4016.5 9,412,717 244.504 0.0260 0.9740 84.13 17.5 8.851,440 366,443 0.0414 0.9586 81.9518.5 8,080,296 0.0000 1.0000 78.55 19.5 7,447,340 79,686 0.0107 0.9893 78.5520.5 7,165,188 19,965 0.0028 0.9972 77.71 21. 5 6,888,452 1,319 0.0002 0.9998 77.5022.5 6,569,642 0.0000 1.0000 77.4823.5 5,977,057 8,702 0.0015 0.9985 77.4824.5 5,532,464 17,735 0.0032 0.9968 77.37 25.5 4,692,130 198,045 0.0422 0.9578 77.1226.5 4,485,929 264,056 0.0589 0.9411 73.8727.5 4,147,098 161,654 0.0390 0.9610 69.5228.5 3,970,743 102,793 0.0259 0.9741 66.81 29.5 2,564,478 29,434 0.0115 0.9885 65.0830.5 1,672,185 0.0000 1. 0000 64.33 31. 5 856.523 0.0000 1.0000 64.3332.5 856,523 314,965 0.3677 0.6323 64.3333.5 541,558 270,290 0.4991 0.5009 40.67 34.5 271,268 36.714 0.1353 0.8647 20.3735.5 234.554 0.0000 1. 0000 17.62 36.5 17.62 111-28 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 70 of 491 IDAHO POWER COMPANY ACCOUNT 316.00 MISCELLANEOUS POWER PLANT EQUIPMENT ORIGINAL LIFE TABLE PLACEMENT BAN 1974 -2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 6,355,698 0.0000 1.0000 100.000.5 5.355,273 0.0000 1. 0000 100.00 1. 5 5.738,741 98.935 0.0172 0.9828 100.002.5 4,764,328 0.0000 1.0000 98.283.5 3,161.850 17,500 0.0055 0.9945 98.284.5 3,551,242 58.888 0.0166 0.9834 97.735.5 3,775,978 0.0000 1.0000 96.116.5 3,589,259 20,574 0.0057 0.9943 96.117.5 3,788,025 0.0000 1. 0000 95.568.5 4,347,261 0.0000 1.0000 95.56 9.5 4,772,730 80,907 0.0170 0.9830 95.5610.5 5.524,384 113,027 0.0205 0.9795 93.9411.5 5,419,514 7,484 0.0014 0.9986 92.0212.5 5,463,033 0.0000 1.0000 91.8913.5 5,410.643 30,882 0.0057 0.9943 91.8914.5 7,089,674 16,686 0.0024 0.9976 91. 3715.5 7,835,278 12,653 0.0016 0.9984 91.1516.5 8,229,185 4,248 0.0005 0.9995 91.0017.5 7,908,163 304,434 0.0385 0.9615 90.9618.5 7,199.029 0.0000 1.0000 87.46 19.5 6.566,073 79,686 0.0121 0.9879 87.4620.5 6,292,623 11,696 0.0019 0.9981 86.39 21. 5 6,888,452 1,319 0.0002 0.9998 86.2322.5 6.569,642 0.0000 1.0000 86.2223.5 5.977,057 8,702 0.0015 0.9985 86.2224.5 5.532,464 17.735 0.0032 0.9968 86.0925.5 4,692,130 198,045 0.0422 0.9578 85.8226.5 4,485.929 264,056 0.0589 0.9411 82.1927.5 4,147,098 161,654 0.0390 0.9610 77.3628.5 3,970,743 102,793 0.0259 0.9741 74.34 29.5 2,564,478 29,434 0.0115 0.9885 72.4230.5 1,672,185 0.0000 1. 0000 71.59 31. 5 856,523 0.0000 1.0000 71. 5932.5 856,523 314,965 0.3677 0.6323 71.5933.5 541,558 270,290 0.4991 0.5009 45.2634.5 271,268 36.714 0.1353 0.8647 22.6735.5 234,554 0.0000 1.0000 19.6036.5 19.60 ~i-29 ExhibitNo. 1 Case No. IPC-E-12.08 J. Spanos,lPC Page 71 of 491 QIïZHil :E00 HH ~(I E-ZIï:EOiH::()Iï Z0H E-.:E-(I~Iï0::Oi ~(I ~ 0 i: ~ E-0::H Oi 0 :: :E LO i:0 ::0 N (I0'~M ::Iï E-:? ~ 000 Oi :E(I00 ~.q Q Q N ~H 0'M Hi:- z0H.-0HNi:0'0M 0 LO \D.-M 0"' \D.-M 0.- \D.- M (I E- S000i: i..! W f-IUz¡2:w I ~ 15 wu~5W Cl 100.. ..00¡ ~ t¡\D \DCj \DCj Cj.. ... W:;ex:: ,u I ..'02: G..ex0...,..,',...... N .-li .N,.. -:. ~.;:./ "~v ,/V. ~~.~.~././'II( oo.-a;o00 o"Co(Q ¡¡o"T CoM Co('~Co ÐNIAIAtiOS lN3:)t13d o"T ir(' oM ItN (/0:-:w0)-NZ w C)-: ir o.- ir CoCo ~i-30 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 72 of 491 IDAHO POWER COMPANY ACCOUNTS 316.10.316.40,316.50,392.10,392.40 AN 392.50 TRASPORTATION EQUIPMENT -SMALL -COMBINED ORIGINAL LIFE TABLE PLACEMENT BAN 1966-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 26.001,396 25,882 0.0010 0.9990 100.000.5 24,718,224 72,072 0.0029 0.9971 99.90 1. 5 25.744,923 291,836 0.0113 0.9887 99.612.5 25.050,165 30,708 0.0012 0.9988 98.483.5 23,789,991 332,493 0.0140 0.9860 98.364.5 22.644,767 662,828 0.0293 0.9707 96.985.5 21,593,794 1,757,108 0.0814 0.9186 94.156.5 19,444,978 2,079,656 0.1070 0.8930 86.497.5 16,405,573 2,568,792 0.1566 0.8434 77.248.5 12,276,169 1,902,609 0.1550 0.8450 65.14 9.5 9,025,405 1,026,251 0.1137 0.8863 55.0510.5 8,078,958 1,324,258 0.1639 0.8361 48.791l.5 6,105,358 1,042,354 0.1707 0.8293 40.7912.5 4,280.088 533,753 0.1247 0.8753 33.8313.5 2,550,429 312,921 0.1227 0.8773 29.6114.5 2,011.568 386,727 0.1923 0.8077 25.9815.5 1,545,524 164,608 0.1065 0.8935 20.9816.5 1,210,713 123.739 0.1022 0.8978 18.7517.5 843,922 1l6.632 0.1382 0.8618 16.8318.5 600.189 150,613 0.2509 0.7491 14.50 19.5 318,346 48,240 0.1515 0.8485 10.8620.5 204,248 31,216 0.1528 0.8472 9.2221.5 113,955 3,218 0.0282 0.9718 7.8122.5 114,280 734 0.0064 0.9936 7.5923.5 91,301 0.0000 1.0000 7.5424.5 91,301 15,838 0.1735 0.8265 7.5425.5 75,462 0.0000 1.0000 6.2326.5 62,113 3.543 0.0570 0.9430 6.2327.5 58.570 0.0000 1.0000 5.8828.5 30,322 0.0000 1.0000 5.88 29.5 2.037 0.0000 1.0000 5.8830.5 2,037 417 0.2047 0.7953 5.88 31. 5 1,620 0.0000 1.0000 4.6732.5 1,620 906 0.5590 0.4410 4.6733.5 714 0.0000 1.0000 2.0634.5 714 0.0000 1.0000 2.0635.5 714 0.0000 1.0000 2.0636.5 714 0.0000 1.0000 2.0637.5 714 0.0000 1.0000 2.0638.5 2.06 ~i-31 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos. IPC Page 73 of 491 0ri~H¡::i0() riö ~.. r-~ri:iPiH~0 Ulri~~~0H () ~0:~r-0 ~0:;:0 HPiPi~:i Ul0 ~ ~()Ul i:E-::ri r-3:0000Pir-:iUl0N ~0\ ~r'0H 0 ~~~0 H1.CDHN0:0\0C" ~0r- 1..-.. 01. 1..- C" Ul E- 50()().: !.. :UJ .. ~ a1i!:¿i: UJ I UJ u¡~si UJ Q.loa! .. -l!ooINNi I. \.i~~t"" 'i i . UJ I :;i::JU I .. ~ !8 I i: ¡0 N J.-0 /N~S0 .i-.I ~?,y/..-~~V~.Iy I oo.-~o"'g g ogo00Rg ÐNI/\ll\èlnS l.N3::èl3d o,. oto oIJ o"'(/0:4:wrz w ~ot' oN o,. 00 ~i-32 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, fPC Page 74 of 491 IDAHO POWER COMPANY ACCOUNTS 316.60, 316.70, 392.60 AND 392.70 TRASPORTATION EQUIPMENT - LARGE - COMBINED PbACEMENT BAN 1946-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11. 5 12.5 13.5 14 .5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 . 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 29,373,542 27.918,491 27,759,282 24,970,561 22,344.917 21,171,847 20.918,549 19,429,352 17,890,058 16.790,558 16,265,545 15,527,173 15,002,217 14,787,996 13,090,390 12,286,929 10,858,807 8,571,649 6,786.013 5,196,695 4,255.475 3,366.945 3.042,980 2.600,526 2.124,373 1,649,325 1,341,840 1,003.608 490,409 353,592 204.881 166,525 152,925 89,028 74.297 61,927 63,209 54.645 25.766 13,294 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 62.286 12,120 197,808 281.642 504,258 423,243 234,422 143,483 365,405 640,208 812,138 729,149 1,164,415 1,066,516 1,148,349 716.730 210,623 109,455 326,208 415,720 165,490 165,752 208,764 80,214 87,083 88,598 88,157 19.817 13,600 9,473 8,563 2,184 12,472 ~i-33 EXPERIENCE BAN 1996-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0025 0.0005 0.0093 0.0135 0.0260 0.0237 0.0140 0.0088 0.0235 0.0427 0.0549 0.0557 0.0948 0.0982 0.1340 0.1056 0.0405 0.0257 0.0969 0.1366 0.0636 0.0780 0.1266 0.0598 0.0868 0.1807 0.2493 0.0967 0.0817 0.0000 0.0000 0.1275 0.0000 0.1355 0.0400 0.4841 0.0000 SURV RATIO 1.0000 1.0000 1.0000 0.9975 0.9995 0.9907 0.9865 0.9740 0.9763 0.9860 0.9912 0.9765 0.9573 0.9451 0.9443 0.9052 0.9018 0.8660 0.8944 0.9595 0.9743 0.9031 0.8634 0.9364 0.9220 0.8734 0.9402 0.9132 0.8193 0.7507 0.9033 0.9183 1.0000 1.0000 0.8725 1.0000 0.8645 0.9600 0.5159 1.0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 100.00 99.75 99.70 98.76 97.44 94.91 92.66 91.37 90.56 88.213 84.66 80.01 75.55 68.39 61.67 53.41 47.77 45.83 44.66 40.33 34.82 32.60 30.06 26.25 24.69 22.54 18.47 13.87 12.52 11.50 11. 50 11.50 10.03 10.03 8.68 8.33 4.30 Exhibit No. 1 case No. IPC-E-12-o8 J. Spanos,lPC Page 75 of 491 IDAHO POWER COMPANY ACCOUNTS 316.60. 316.70, 392.60 AN 392.70 TRASPORTATION EQUIPMENT - LARGE - COMBINED ORIGINAL LIFE TABLE. CONT. PLACEMENT BAN 1946-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 22,499 22,499 22,499 22.055 22,055 14,101 14,101 14,101 14,101 11,356 2,511 2,511 2,511 622 622 622 622 RETIREMENTS DURING AGE INTERVAL 443 7,955 2,744 807 622 ~i-34 EXPERIENCE BAN 1996-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 4.30 0.0000 1. 0000 4.30 0.0197 0.9803 4.30 0.0000 1.0000 4.21 0.3607 0.6393 4.21 0.0000 1. 0000 2.69 0.0000 1.0000 2.69 0.0000 i.oooo 2.69 0.1946 0.8054 2.69 0.0000 1. 0000 2.17 0.0000 1.0000 2.17 0.0000 1.0000 2.17 0.3213 0.6787 2.17 0.0000 1.0000 1.47 0.0000 1.0000 1.47 0.0000 1.0000 1.47 1.0000 1.47 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 76 of 491 Qi:ZHo:¿0U f-Zi:¿IJP.i:H ;: :: 0:a ::i: u Q 0:~i:0 ~~;:HP.i:;:¿i:0:0 P.::u 0 IJ 0:i::ii:i:f-::::0000P.P.¿;IJ0:i 0 Qi:0 ZQi:H \j Ch i-M ~Q H ~C9H0:0 0 00 \jr- C" IJf-Z::0uu~ WI-V..Z ~w!:'_L~wUJ u,~5wa-00_ --CONN~~C' ltì0. cr-~. U.;:ex:: Iu.J i-iz , t3 i ã20 ...10i ,I0. " Viè:S0 V ¡ ¡'-- I . i ./.V i.!;/, I/. I I/. i..I.Î/,.¡ !~i~. IVi! V I i,,¡ I--- . èS o00 r:o~ou,o-.or'o(''o o'-G) ÐNlf\IAl:lnS lN3:)H3d o,. oco oi. o":(ja:4;w)-z w C)4;o"' ~ o oo ~i-35 Exhibit No. 1 Case No. IPC.E-12-oS J. Spanos, IPC Page 77 of 491 IDAHO POWER COMPANY ACCOUNTS 316.80 AND 396.00 POWER OPERATED EQUIPMENT - COMBINED PLACEMENT BAN 1957-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 7,736,791 7.693.587 8,313,037 8,604,179 6,980,726 6.441,555 5,594,763 5,569.220 5,171.971 5,137,484 4,367,394 4,377,585 4.666,567 5,002.587 5.207,781 4,886,575 4,313,049 3,164,372 3,145,345 2,950,319 2,889,353 2,662,000 2.435,056 2,442,898 2,343,414 2,213.299 2,144,685 1,643,503 1,175,562 351,306 242,873 173,052 153,912 124,449 129.007 144,212 179,037 163,106 137,629 144,522 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 10,804 530,263 253.821 22,120 39,998 382,252 366,666 432,633 17,684 14,189 229,716 467,875 486,912 449,328 90,509 145,843 135,826 20,577 114,429 180,533 5,586 46,210 36,834 113.034 74,492 11.750 27,759 22,682 29,463 574 15,931 25,883 2,655 ~i-36 EXPERIENCE BAN 1996-2010 RETMT RATIO 0.0000 0.0014 0.0000 0.0616 0.0364 0.0034 0.0071 0.0686 0.0709 0.0842 0.0040 0.0032 0.0492 0.0935 0.0935 0.0920 0.0210 0.0461 0.0432 0.0070 0.0396 0.0678 0.0023 0.0189 0.0157 0.0000 0.0527 0.0453 0.0100 0.0000 0.1143 0.1311 0.1914 0.0046 0.0000 0.0000 0.0890 0.1587 0.0193 0.0000 SURV RATIO 1. 0000 0.9986 1.0000 0.9384 0.9636 0.9966 0.9929 0.9314 0.9291 0.9158 0.9960 0.9968 0.9508 0.9065 0.9065 0.9080 0.9790 0.9539 0.9568 0.9930 0.9604 0.9322 0.9977 0.9811 0.9843 1.0000 0.9473 0.9547 0.9900 1.0000 0.8857 0.8689 0.8086 0.9954 1.0000 1. 0000 0.9110 0.8413 0.9807 1.0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 99.86 99.86 93.71 90.30 89.99 89.34 83.21 77.31 70.80 70.52 70.29 66.83 60.58 54.91 49.86 48.82 46.57 44.56 44.25 42.49 39.61 39.52 38.77 38.16 38.16 36.15 34.51 34.17 34.17 30.26 26.30 21.26 21.16 21.16 21.16 19.28 16.22 15.91 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 78 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 3 i , 0 0 S T R U C T U R E S A N D I M P R O V E M E N T S OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S lO t 10 -- ~ 1 9 4 2 t ï O E R l E N C f l OR I G I N A L C U R V E · 1 9 1 9 - 2 0 1 0 P L A C E M E N T 19 7 7 - 2 0 1 0 E X P E R I E N C E : ~. . .. 1 9 1 9 - 2 0 1 0 P L A C E ! " l ~ N T .- f ~ i " ,. ,. '\ '.c ., i 10 WA 1 0 5 - R 2 . ~ i i i I I I '- 20 40 w æ AG E I N Y E A R S 10 0 12 0 14 0 90 80 70 --iW.. "Z 6 0 550:;:C/ 5 C l-ZlúÜ ff 4 0 a. 30 20 ;; ! - & ' ~ rt ( J l i ; : Cl ' t C l õ ' .. I l z : = CO : l O Z o i i . 0 :; : . = i : . co " 0 ( " ~o ~ 6co o o IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AND IMPROVEMENTS PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 '3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5ll.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 157,796,218 155,868,764 153,403,360 147,287,405 135,463,942 131,567,943 130,583,479 129,210,055 128,534,661 128,732,874 127,830,842 127,587.051 127,065.848 126,649,263 124,773,392 123,861,966 112,316,467 76,684,070 75,815,489 64,749,509 63,656,653 62,771.190 60,702,210 60,439,914 60,130,361 58,561,016 57,631.077 56,869,725 48,764.556 48,490,194 48,238,687 32,088,970 31,988,402 20,701.332 20,569.506 20,489,564 20,277,665 20,184,474 20,070,586 19,873,453 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 59 8,959 153 186,141 37,998 120,272 60,485 157,993 394,596 59,114 68,712 25,011 73,226 67,811 134,928 48,101 309,811 58,817 46,971 94,908 64,912 126,763 84,582 161,824 65,168 171,442 32,376 95,830 15,137 213.787 23,649 73.235 76,147 22,220 18,051 26,169 62,428 53,216 56.102 ~i-38 EXPERIENCE BAN 1946-2010 RETMT RATIO 0.0000 0.0000 0.0001 0.0000 0.0014 0.0003 0.0009 0.0005 0.0012 0.0031 0.0005 0.0005 0.0002 0.0006 0.0005 0.0011 0.0004 0.0040 0.0008 0.0007 0.0015 0.0010 0.0021 0.0014 0.0027 0.0011 0.0030 0.0006 0.0020 0.0003 0.0044 0.0007 0.0023 0.0037 0.0011 0.0009 0.0013 0.0031 0.0027 0.0028 SURV RATIO 1.0000 1.0000 0.9999 1. 0000 0.9986 0.9997 0.9991 0.9995 0.9988 0.9969 0.9995 0.9995 0.9998 0.9994 0.9995 0.9989 0.9996 0.9960 0.9992 0.9993 0.9985 0.9990 0.9979 0.9986 0.9973 0.9989 0.9970 0.9994 0.9980 0.9997 0.9956 0.9993 0.9977 0.9963 0.9989 0.9991 0.9987 0.9969 0.9973 0.9972 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 99.99 99.99 99.86 99.83 99.74 99.69 99.57 99.26 99.22 99.16 99.14 99.09 99.03 98.92 98.88 98.48 98.41 98.33 98.19 98.09 97.88 97.74 97.48 97.37 97.08 97.03 96.84 96.81 96.38 96.31 96.09 95.73 95.63 95.54 95.42 95.13 94.87 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 80 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 19,727,821 26,548 0.0013 0.9987 94.6140.5 19,679,099 2,758 0.0001 0.9999 94.48 41.5 19.358.693 37,526 0.0019 0.9981 94.4742.5 19,294,084 41,625 0.0022 0.9978 94.2843.5 17,972,557 23.239 0.0013 0.9987 94.0844.5 17.187,856 84,860 0.0049 0.9951 93.9645.5 16,954,483 34,500 0.0020 0.9980 93.4946.5 16,649,701 12,648 0.0008 0.9992 93.3047.5 16,630,585 2,388 0.0001 0.9999 93.2348.5 16,605,781 1,972 0.0001 0.9999 93 _22 49.5 10,166,345 4,726 0.0005 0.9995 93.21 50.5 4,652,199 2,874 0.0006 0.9994 93.16 51. 5 4,616,024 479 0.0001 0.9999 93.1152.5 4,605,538 41.767 0.0091 0.9909 93.10 53.5 4,546,080 13,839 0.0030 0.9970 92.2554.5 4,506,508 6,164 0.0014 0.9986 91.9755.5 4,476,163 2,996 0.0007 0.9993 91.8556.5 4.454,223 34,830 0.0078 0.9922 91.7957.5 4,411,355 194 0.0000 1.0000 91. 0758.5 2,544,836 1,216 0.0005 0.9995 91.06 59.5 2,534,779 1,532 0.0006 0.9994 91.0260.5 2,247,307 3.820 0.0017 0.9983 90.97 61. 5 1,950,708 13,052 0.0067 0.9933 90.8162.5 1.292,265 8,238 0.0064 0.9936 90.2063.5 1,223,659 13,386 0.0109 0.9891 89.63 64.5 1.207,599 5,176 0.0043 0.9957 88.6565.5 1,198,617 27,169 0.0227 0.9773 88.2766.5 1,170,908 17,565 0.0150 0.9850 86.2767.5 1,153,307 4,048 0.0035 0.9965 84.9768.5 1,144,942 0.0000 i.oooo 84.67 69.5 1,139,571 8,306 0.0073 0.9927 84.6770.5 1,124.942 350 0.0003 0.9997 84.06 71. 5 1,121,890 100 0.0001 0.9999 84.0372.5 967.318 0.0000 1. 0000 84.0273.5 515,142 2.046 0.0040 0.9960 84.0274.5 511,104 3.404 0.0067 0.9933 83.6975.5 507,444 0.0000 1.0000 83.1376.5 507,444 0.0000 1.0000 83.1377.5 507,444 1,246 0.0025 0.9975 83.1378.5 506,197 0.0000 1.0000 82.93 111-39 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 81 of 491 IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 505,894 505,547 504.579 401,097 387,835 385,770 385,747 363,357 363,357 355.843 54,870 54,870 RETIREMENTS DURING AGE INTERVAL 2,623 1,101 ~i-40 EXPERIENCE BAND 1946-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1. 0000 82.93 0.0000 i.oooo 82.93 0.0052 0.9948 82.93 0.0000 i.oooo 82.50 0.0000 i.oooo 82.50 0.0000 1.0000 82.50 0.0000 i.oooo 82.50 0.0000 i.oooo 82.50 0.0030 0.9970 82.50 0.0000 i.oooo 82.25 0.0000 1.0000 82.25 0.0000 1.0000 82.25 82.25 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 82 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS ORIGINAL LIFE TABLE PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1977-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 136,677,109 0.0000 1. 0000 100.000.5 134,818,408 0.0000 1.0000 100.00 1. 5 132,567,333 7,422 0.0001 0.9999 100.002.5 126,527,514 0.0000 1. 0000 99.993.5 114,819,693 20,436 0.0002 0.9998 99.994.5 111,270,270 32,081 0.0003 0.9997 99.985.5 110,397,240 33,943 0.0003 0.9997 99.956.5 109.157,892 59,380 0.0005 0.9995 99.927.5 108,666,745 136.298 0.0013 0.9987 99.868.5 108.380,711 113,687 0.0010 0.9990 99.74 9.5 109,139,317 33,293 0.0003 0.9997 99.6310.5 109,848,577 52,121 0.0005 0.9995 99.60ll.5 109,510,864 23,244 0.0002 0.9998 99.5612.5 109,418,220 53.903 0.0005 0.9995 99.5313.5 107,584,549 54,756 0.0005 0.9995 99.4914.5 106,717,461 110.899 0.0010 0.9990 99.4315.5 101,961,903 31,992 0.0003 0.9997 99.3316.5 71.877.389 206,766 0.0029 0.9971 99.3017.5 71,167,822 47,280 0.0007 0.9993 99.0118.5 60,050,725 46,011 o .0008 0.9992 98.95 19.5 58,990,332 79,236 0.0013 0.9987 98.8720.5 58,159,119 55.367 0.0010 0.9990 98.74 21. 5 56.090.564 120,300 0.0021 0.9979 98.6522.5 55.861,130 81,391 0.0015 0.9985 98.4323.5 55,560,889 161,182 0.0029 0.9971 98.2924.5 55,692,931 57,228 0.0010 0.9990 98.0125.5 54,832,253 171,442 0.0031 0.9969 97.9026.5 54,307,671 11,909 0.0002 0.9998 97.6027.5 46,542,283 95,302 0.0020 0.9980 97.5828.5 46,963,277 14,558 0.0003 0.9997 97.38 29.5 46,781,643 210,380 0.0045 0.9955 97.3530.5 30.638,088 22,986 0.0008 0.9992 96 .91 31. 5 30,541,989 67,742 0.0022 0.9978 96.8432.5 19,261,044 73,791 0.0038 0.9962 96 .6233.5 19.134,108 20,976 o .00ll 0.9989 96 .2534.5 19,060,028 11,236 0.0006 0.9994 96 .1535.5 18,866,172 25,608 0.0014 0.9986 96 .0936.5 18,779,865 62,273 0.0033 0.9967 95.9637.5 18.670,969 51,507 0.0028 0.9972 95.6438.5 18,671,972 55,285 0.0030 0.9970 95.38 ~i-41 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 83 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AN IMPROVEMENTS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAND 1919-2010 EXPERIENCE BAN 1977 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 19,018,022 23,237 0.0012 0.9988 95.0940.5 18,974,603 2.361 0.0001 0.9999 94.98 41. 5 18,654,851 37,340 0.0020 0.9980 94.9742.5 18,590,428 41,519 0.0022 0.9978 94.7843.5 17,269,008 21,903 0.0013 0.9987 94.5744.5 16,485,643 57,516 0.0035 0.9965 94.4545.5 16,279,997 17,561 0.0011 0.9989 94.1246.5 15,992,996 12,366 0.0008 0.9992 94.0147.5 15.978,300 2,388 0.0001 0.9999 93.9448.5 16,060,761 1,415 0.0001 0.9999 93.93 49.5 9,711,596 2,340 0.0002 0.9998 93.9250.5 4,201,902 2,795 0.0007 0.9993 93.9051.5 4,165.828 479 0.0001 0.9999 93.8352.5 4,191,768 41,767 0.0100 0.9900 93.8253.5 4,132,311 1,607 0.0004 0.9996 92.89 54.5 4,111.383 6,164 0.0015 0.9985 92.8555.5 4,405,841 2,996 0.0007 0.9993 92.71 56.5 4,383,901 34, B30 0.0079 0.9921 92.6557.5 4,411,355 194 0.0000 1. 0000 91.9158.5 2,544,S36 1,216 0.0005 0.9995 91.91 59.5 2,534.779 1.532 0.0006 0.9994 91.87 60.5 2,247,307 3,820 0.0017 0.9983 91.8161.5 1,950,708 13,052 0.0067 0.9933 91.6562.5 1,292,265 8,238 0.0064 0.9936 91.0463.5 1,223,659 13,386 0.0109 0.9891 90.4664.5 1,207,599 5.176 0.0043 0.9957 89.4765.5 1,198,617 27,169 0.0227 0.9773 89.09 66.5 1,170,908 17,565 0.0150 0.9850 87.0767.5 1,153,307 4,048 0.0035 0.9965 85.7668.5 1,144,942 0.0000 1. 0000 85.46 69.5 1,139,571 8,306 0.0073 0.9927 85.4670.5 1,124,942 350 0.0003 0.9997 84.84 71. 5 1,121,890 100 0.0001 0.9999 84.8172.5 967,318 0.0000 1.0000 84.8073.5 515,142 2,046 0.0040 0.9960 84.8074.5 511,104 3.404 0.0067 0.9933 84.4775.5 507,444 0.0000 1. 0000 83.9176.5 507,444 0.0000 1.0000 83.9177.5 507,444 1,246 0.0025 0.9975 83.9178.5 506,197 0.0000 1. 0000 83.70 ~i-42 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos,lPC Page 84 of 491 IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 505,894 505,547 504,579 401,097 387,835 385,770 385,747 363,357 363,357 355,843 54,870 54.870 RETIREMENTS DURING AGE INTERVAL 2,623 1,101 ~i-43 EXPERIENCE BAND 1977-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 83.70 0.0000 1.0000 83.70 0.0052 0.9948 83.70 0.0000 1.0000 83.26 0.0000 1.0000 83.26 0.0000 1.0000 83.26 0.0000 1.0000 83.26 0.0000 1.0000 83.26 0.0030 0.9970 83.26 0.0000 1.0000 83.01 0.0000 1.0000 83.01 0.0000 1.0000 83.01 83.01 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 85 of 491 z0H E-,qU0,.riP: CI(I ri:;t:,q P::3 ::P:Uri ~P::;0 ~:3 t:H0. ~ t::E P:0 ::U (I(IP:~:iriE-:3 0 0000.-:ECICI0P: ~H ~00t:H P:ri ~CIri ZP:HøH0P:,.0 C'M M E- § 8u,q o"TT'! ..í lU I-!Uz t Z UJ¡ w 2: I ë2 UJ,UJ U i a. :3, fi 0-j 0 Cl.. r- I~~J: 6o to 10 Cl.N..I . I ~ "t(J, 0:,I :)lJi U I ~ 0" G :-:I -6i fšr--....i- ../ ," ,. /' ! i ~.. 8T' á5 (ia:c(w:: :z w Clc(ow ~ ~ 8 00ooio(X oNgotooro o..ol!o.. ÐNIAll\èlnS lN38èl3d ~i-4 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 86 of 491 IDAHO POWER COMPANY ACCOUNT 332.10 RESERVOIRS, DAMS AND WATERWAYS - RELOCATION ORIGINAL LIFE TABLE PLACEMENT BAND 1960-1979 EXPERIENCE BAN 2006-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 30,082 0.0000 1. 0000 100.0027.5 30,082 0.0000 1.0000 100.0028.5 30,082 0.0000 1.0000 100.00 29.5 30.082 0.0000 1.0000 100.0030.5 30.082 0.0000 1. 0000 100.00 31. 5 100.0032.5 33.5 34.5 35.5 36.5 37.5 38.5 ~i-45 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 87 of 491 IDAHO POWER COMPANY ACCOUNT 332.10 RESERVOIRS, DAMS AN WATERWAYS - RELOCATION ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1960-1979 AGE AT BEGIN OF INTERVAL 39.5 40.5 41.5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 3/258 377/015 377/015 377,015 1/897,838 19/427,166 19/053,409 19/053,409 19/053/409 17/532,586 RETIREMENTS DURING AGE INTERVAL ~i-46 EXPERIENCE BAN 2006-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 SURV RATIO peT SURV BEGIN OF INTERVAL Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 88 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 3 2 . 2 0 R E S E R V O I R S , D A M S A N D W A T E R W A Y S OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 10 -- " ' - - - 1 9 4 6 ~ 2 õ ì õ E X P E R I E N C E : I ~ OR I G I N A L C U R V E · 1 9 1 7 - 2 0 1 0 P L A C E M E N T . 1 9 7 7 - 2 0 1 0 E X P E R I E N C E : .. 19 1 7 - 2 0 1 0 P L A C E M E N T \ . . . . _ - - _ . ... . ._ . . . . I .. . . I .. - 1 J V V r \ : 1 . : . : . ; ' t i i i 20 40 60 8 0 AG E I N Y E A R S 10 0 12 0 14 0 90 80 70 ~ C-Z 6 0 S;::cr::C/ 5 0 ~Z LUÜ ff 4 0 a. 30 20 ~H - Q ~ l§ . g l ß ~ co I I Z : : co 5 0 z o C I ' 0 .. . . - . ~- ' t . . co ' t ( " .. ( ) n , ..~co o o IDAHO POWER COMPANY ACCOUN 332.20 RESERVOIRS, DAMS AN WATERWAYS PLACEMENT BAN 1917-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17 .5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 224,356,977 223,975,358 223,005,311 219,945,669 218,172,855 217,658,316 217,184,310 216,494,546 216,560.355 217,187,231 216,937,284 216,786.388 216,786.388 216,748,604 216,573,659 216,451.044 208.510,682 204,736,666 205,002,616 187,341,244 185,584,844 185,138,736 184,621,849 184,539,669 184.375.094 175,943,381 175,880,504 176,151,734 170,429,108 170,428,445 170.297,202 156.515,026 155,043,944 150,826,039 150,649,758 150,647.428 150.646.422 150,618.207 150,411,003 150,400,936 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 128 167,473 20,381 18,018 40,898 241,987 490 20,972 5.235 66,869 16,624 1,165 45,559 6,690 1,574 1.570 436 19,030 2,020 146 42,633 30,538 242 39,834 2,330 1,006 28,215 207.204 124 47,167 ~i-48 EXPERIENCE BAN 1946-2010 RETMT RATIO 53 O. 0000 0.0000 0.0000 0.0008 0.0001 0.0000 0.0001 0.0000 0.0002 0.0011 0.0000 0.0000 0.0000 0.0001 0.0000 0.0003 0.0001 0.0000 0.0002 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0003 0.0002 0.0000 0.0000 0.0003 0.0000 0.0000 0.0002 0.0014 0.0000 0.0003 SURV RATIO 1.0000 1.0000 1. 0000 0.9992 0.9999 1.0000 0.9999 1. 0000 0.9998 0.9989 1.0000 1. 0000 1.0000 0.9999 1.0000 0.9997 0.9999 1.0000 0.9998 1. 0000 1.0000 1.0000 1.0000 0.9999 1.0000 1.0000 1.0000 1.0000 1.0000 0.9997 0.9998 1.0000 1. 0000 0.9997 1. 0000 1.0000 0.9998 0.9986 1.0000 0.9997 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 100.00 99.92 99.91 99.91 99.91 99.91 99.89 99.78 99.78 99.78 99.78 99.77 99.76 99.73 99.72 99.72 99.70 99.70 99.70 99.70 99.70 99.69 99.69 99.69 99.69 99.69 99.69 99,66 99.64 99.64 99.64 99.62 99.61 99.61 99.60 99.46 99.46 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 90 of 491 IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1917-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41.5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61. 5 62.5 63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71.5 72 .5 73.5 74.5 75.5 76.5 77.5 78.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 150,353,159 150,324,167 150,302.139 150,270,541 97,490,032 97,479,860 97,431,251 97,354,337 97,312,465 97,196.985 68,907,296 29,826,314 29,796,576 29,796,290 29,783.566 29,780,466 29,779,574 29,735,515 29,679,298 19,970,756 19,870,902 12,683,241 7,393,367 4,853,189 2,678,747 2,638,170 2,638,170 2,615.733 2,176,309 2,172,828 2,166,634 2,161,297 2,156,961 1,896,940 1,294,176 1,294,020 1,288,871 1.288,871 1,288,871 1,288,871 RETIREMENTS DURING AGE INTERVAL 28,992 12,816 30,859 579 4,505 68,639 110,582 9,980 20,540 1,408 12.235 30,349 46,950 12,151 99,261 19,077 5,081 3,640 1,469 40,276 8.537 95,673 6,194 5,089 5,363 111-49 EXPERIENCE BAN 1946-2010 RETMT RATIO 0.0002 0.0001 0.0002 0.0000 0.0000 0.0000 0.0007 0.0000 0.0011 0.0001 0.0003 0.0000 0.0000 0.0004 0.0000 0.0000 0.0010 0.0016 0.0004 0.0050 0.0010 0.0004 0.0005 O. 0003 0.0150 0.0000 0.0032 0.0366 0.0000 0.0029 0.0023 0.0000 0.0025 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 SURV RATIO 0.9998 0.9999 0.9998 1.0000 1.0000 1. 0000 0.9993 1.0000 0.9989 0.9999 0.9997 1.0000 1.0000 0.9996 1.0000 1. 0000 0.9990 0.9984 0.9996 0.9950 0.9990 0.9996 0.9995 0_9997 0.9850 1.0000 0.9968 0.9634 1.0000 0.9971 0.9977 1. 0000 0.9975 1.0000 1.0000 1.0000 1. 0000 1.0000 1.0000 1.0000 PCT SURV BEGIN OF INTERVAL 99.43 99.41 99.40 99.38 99.38 99.38 99.37 99.30 99.30 99.19 99.18 99.15 99.15 99.15 99.11 99.11 99.11 99.00 98.85 98.81 98.32 98.22 98.18 98.13 98.10 96 .63 96.63 96.32 92.79 92.79 92.53 92.31 92.31 92.08 92.08 92.08 92.08 92.08 92.08 92.08 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 91 of 491 IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS. DAMS AND WATERWAYS ORIGINAL LIFE TABLE. CONT. PLACEMENT BAND 1917-2010 EXPERIENCE BAN 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 1.286.122 0.0000 1. 0000 92.08 80.5 1.285,985 0.0000 1.0000 92.08 S1. 5 1,273,972 0.0000 1. 0000 92.08 82.5 1,006,858 0.0000 1. 0000 92.08 83.5 961,092 O. 0000 1.0000 92.08 84.5 961,092 0.0000 1.0000 92.0885.5 961,092 0.0000 1. 0000 92.08 86.5 961,092 0.0000 1.0000 92.08 87.5 961,092 0.0000 1. 0000 92.0888.5 961,043 0.0000 1.0000 92.08 89.5 339,322 0.0000 1.0000 92.08 90.5 339.322 0.0000 1.0000 92.08 91. 5 60,439 0.0000 1.0000 92.08 92.5 60,439 0.0000 1.0000 92.08 93.5 92.08 II-50 Exhibit No. 1 Case No. IPC-E-12-0S J. Spanos, IPC Page 92 of 491 IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS PLACEMENT BAND 1917-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 76,629,654 76,039,214 75.055,394 71,652,001 70,043,178 69,562,465 69,087,414 68,393,314 68,183,080 68,065,351 120,596,765 120,450,312 120.513,208 120,485,946 120.353,434 120,231,498 140,628,344 175,927,296 175,955,680 158,009,649 156,259,107 155,817,673 155.303,512 155,238.728 155,117,437 155,909,666 155,891,357 163,052,789 162.658,696 165,167.078 167,247,057 153,495,720 152,065,987 147,861,983 148,029.452 148,030,703 148,029,697 148,003,137 147,800,473 148,075,416 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 20,381 18,018 40,898 241.987 20.972 5,235 66.869 16.624 45,559 1,322 1,570 436 18,648 1,976 146 42,633 242 39,834 2,231 1,006 28,215 207,000 122 47,167 III-51 EXPERIENCE BAN 1977-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0000 0.0003 0.0000 0.0003 0.0000 0.0006 0.0036 0.0000 0.0000 0.0000 0.0002 0.0000 0.0006 0.0001 0.0000 0.0003 0.0000 53 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 0.0000 0.0000 0.0000 0.0003 0.0000 0.0000 0.0000 0.0003 0.0000 0.0000 0.0002 0.0014 0.0000 0.0003 SURV RATIO 1.0000 1.0000 1.0000 1.0000 0.9997 1.0000 0.9997 1.0000 0.9994 0.9964 1.0000 1.0000 1.0000 0.9998 1.0000 0.9994 0.9999 1.0000 0.9997 1.0000 1.0000 1.0000 1. 0000 0.9999 1.0000 1. 0000 1.0000 1.0000 1.0000 0.9997 1. 0000 1.0000 1. 0000 0.9997 1. 0000 1.0000 0.9998 0.9986 1.0000 0.9997 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 100.00 100.00 99.97 99.97 99.94 99.94 99.88 99.53 99.53 99.53 99.53 99.51 99.51 99.45 99.44 99.44 99.42 99.41 99.41 99.41 99.41 99.40 99.40 99.40 99.40 99.40 99.40 99.37 99.37 99.37 99.37 99.35 99.35 99.35 99.33 99.19 99.19 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 93 of 491 IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1917-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61. 5 62.5 63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71. 5 72.5 73.5 74.5 75.5 76.5 77.5 78.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 148,773,501 148,744,665 148.727,787 148,696,189 95,915,679 95,905.507 95,861.115 95,785,045 95,755,186 95,906,820 67,902,075 28,821,093 28,791,354 28,791,069 28,778,345 28,775,294 29.440,252 29.396.193 29,618,858 19,910,317 19,870,902 12,683,241 7,393,367 4,853.189 2,678,747 2,638,170 2,638,170 2,615,733 2,176/309 2,172/828 2,166/634 2,161,297 2/156/961 1,896.940 1/294/176 1,294/020 1/288.871 1/288.871 1,288/871 1/288,871 RETIREMENTS DURING AGE INTERVAL 28/992 12/816 30.859 579 4.505 68.639 110.582 9/980 20,540 1/408 12,235 30/349 46,950 12/151 99/261 19.077 5/081 3/640 1,469 40/276 8/537 95/673 6,194 5,089 5/363 III-52 EXPERIENCE BAND 1977-2010 RETMT RATIO 0.0002 0.0001 0.0002 0.0000 0.0000 0.0000 0.0007 0.0000 0.0012 0.0001 0.0003 0.0000 0.0000 0.0004 0.0000 0.0000 0.0010 0.0016 0.0004 0.0050 0.0010 0.0004 0.0005 0.0003 0.0150 0.0000 0.0032 0.0366 0.0000 0.0029 0.0023 0.0000 0.0025 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 SURV RATIO 0.9998 0.9999 0.9998 1. 0000 1. 0000 1.0000 0.9993 1.0000 0.9988 0.9999 0.9997 1.0000 1. 0000 0.9996 1.0000 1.0000 0.9990 0.9984 0.9996 0.9950 0.9990 0.9996 0.9995 0.9997 0.9850 1. 0000 0.9968 0.9634 1.0000 0.9971 0.9977 1.0000 0.9975 1.0000 1. 0000 1. 0000 1.0000 1.0000 1.0000 1. 0000 PCT SURV BEGIN OF INTERVAL 99.16 99.14 99.13 99.11 99.11 99.11 99.10 99.03 99.03 98.92 98.91 98.88 98.87 98.87 98.83 98.83 98.83 98.73 98.57 98.53 98.04 97.94 97.90 97.86 97.83 96.36 96.36 96.04 92.53 92.53 92.27 92.05 92.05 91.82 91. 82 91. 82 91. 82 91.82 91.82 91.82 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 94 of 491 IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1917-2010 EXPERIENCE BAN 1977 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 1,286,122 0.0000 1.0000 91.8280.5 1,285.985 0.0000 1. 0000 91. 82 81. 5 1,273,972 a . 0000 1. 0000 91.8282.5 1,006,858 O. 0000 1. 0000 91.8283.5 961,092 0.0000 1.0000 91.8284.5 961. 092 0.0000 1.0000 91.8285.5 961,092 0.0000 1.0000 91. 8286.5 961,092 0.0000 1.0000 91.8287.5 961,092 0.0000 1.0000 91.8288.5 961,043 0.0000 1.0000 91.82 89.5 339,322 0.0000 1.0000 91.8290.5 339,322 0.0000 1.0000 91. 82 91. 5 60,439 O. 0000 1.0000 91.8292.5 60,439 0.0000 1. 0000 91.8293.5 91.82 II-53 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 95 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 3 3 . 0 0 W A T E R W H E E L S i T U R B I N E S A N G E N E R A T O R S OR I G I N A L A N S M O O T H S U R V I V O R C U R V E S iO C 9( 19 4 6 - 2 0 1 0 E X P E R I E N C E : i OR I G I N A L C U R V E · 1 9 1 9 - 2 0 1 0 P L A C E M E N T ~. 19 7 7 - 2 0 1 0 E X P E R I E N C E ; .. . . A 1 9 1 9 - 2 0 1 0 P L A C E M E N T i ~ .- f' i "\ \ i \ -, " . I ) W A 8 0 - R 3 i i I I 20 40 60 8 0 AG E I N Y E A R S 10 0 12 0 14 0 8C 70 i ~ t)Z 6 C :;:;0:::(j 5 0 I-Z UJÜ0:UJ 4 0 0. 30 20 10 "t ~ ( ' m c2 e n g i ~ C1 " 0 C 1 ë ' (D ~ z ; : 0) 0 0 Z o e n ' 0 ;~ ' ü : " ~ ( ' n i;..g o o IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS,TUBINES AND GENERATORS ORIGINAL LIFE TABLE PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 198,078,614 0.0000 1. 0000 100.000.5 196/362,745 0; 0000 1.0000 100.00 1. 5 191/571/067 241,381 0.0013 0.9987 100.002.5 190/756/131 0.0000 1.0000 99.873.5 190,106,571 4,821 0.0000 1.0000 99.874.5 188/607/263 16/000 0.0001 0.9999 99.875.5 188/262 i 961 1/481 0.0000 1.0000 99.866.5 187 1484/306 12,716 0.0001 0.9999 99.867.5 184/173/483 0.0000 1.0000 99.868.5 184,573.084 527 0.0000 1.0000 99.86 9.5 184/048/221 45/427 0.0002 0.9998 99.8610.5 182,383 i 625 1,930 0.0000 1.0000 99.8311.5 182,101 1623 57 1640 0.0003 0.9997 99.8312.5 181/7101036 241497 0.0001 0.9999 99.80 13 .5 181,541,116 261 1043 0.0014 0.9986 99.7814.5 180 1525/408 269.504 0.0015 0.9985 99.6415.5 164 i 409,788 45.519 0.0003 0.9997 99.4916.5 138,748/331 1 1984 0.0000 1.0000 99.4617.5 138,572.327 227.732 0.0016 0.9984 99.4618.5 114.273/807 7/459 0.0001 0.9999 99.30 19.5 113 i 770 1982 614.329 0.0054 0.9946 99.2920.5 112 1552,861 270.816 0.0024 0.9976 98.76 21. 5 111 i 893 i 329 0.0000 1.0000 98.5222.5 108 1933.556 0.0000 i.oooo 98.5223.5 107/435/948 39 1229 0.0004 0.9996 98.5224.5 106 i 880 1165 8/480 0.0001 0.9999 98.4825.5 106,613 1935 10,542 0.0001 0.9999 98.4826.5 106/579 1744 292 i 651 0.0027 0.9973 98.4727.5 95.7511211 401,457 0.0042 0.9958 98.2028.5 95/275/533 316/801 0.0033 0.9967 97.78 29.5 94/931/555 3/100 0.0000 1.0000 97.4630.5 67/149/332 213/778 0.0032 0.9968 97.46 31. 5 66/931/916 46/262 0.0007 0.9993 97.1532.5 40.829/419 109/490 0.0027 0.9973 97.0833.5 40.719.929 9/942 0.0002 0.9998 96.8234.5 40/709/987 66 1996 0.0016 0.9984 96.7935.5 40/439/546 123,528 0.0031 0.9969 96.6336.5 40/316/018 340,460 0.0084 0.9916 96.3437.5 39,735.309 62.694 0.0016 0.9984 95.5338.5 39/6721066 1,240 0.0000 1.0000 95.38 III-55 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 97 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS,TURBINES AND GENERATORS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 39,622,424 0.0000 1.0000 95.3740.5 39,614.249 11.572 0.0003 0,9997 95.37 41. 5 39,556,905 13.730 0.0003 0.9997 95.3442.5 39,491,331 0.0000 1. 0000 95.3143.5 30,983,128 9,804 0.0003 0.9997 95.31 44.5 30,962,090 15.786 0.0005 0.9995 95.2845.5 30,938,052 19,915 0.0006 0.9994 95.2346.5 30,874,913 26,639 0.0009 0.9991 95.1747.5 30,803,380 11,200 0.0004 0.9996 95.0948.5 30,792,180 66,934 0.0022 0.9978 95.05 49.5 22,370,048 137 0.0000 1.0000 94.8550.5 12,857,990 29,244 0.0023 0.9977 94.85 51. 5 12,826,554 0.0000 1.0000 94.6352.5 12.826,292 15,784 0.0012 0.9988 94.6353.5 12,810.508 26 0.0000 1.0000 94.52 54.5 12,806,139 382 0.0000 1.0000 94.5255.5 12,795.833 600 0.0000 1.0000 94.5156.5 12,788.610 165.917 0.0130 0.9870 94.5157.5 12,621,452 105,262 0.0083 0.9917 93.2858.5 9,373,382 63,049 0.0067 0.9933 92.50 59.5 9,310.333 47,037 0.0051 0.9949 91.8860.5 6,213,320 22,126 0.0036 0.9964 91.42 61.5 3,084,451 92,997 0.0302 0.9698 91. 0962.5 2,217.624 49,642 0.0224 0.9776 88.3563.5 1,441,606 2,252 0.0016 0.9984 86.3764.5 1,439,207 3,137 0.0022 0.9978 86.2365.5 1.434,061 139.609 0.0974 0.9026 86.0466.5 1,283,168 362,628 0.2826 0.7174 77.6767.5 919,988 9 0.0000 1. 0000 55.7268.5 919,933 29,459 0.0320 0.9680 55.72 69.5 890,473 5,000 0.0056 0.9944 53.9370.5 885,036 305 0.0003 0.9997 53.63 71. 5 884.432 0.0000 1.0000 53.6172.5 714,264 0.0000 1.0000 53.6173.5 321,863 2.258 0.0070 0.9930 53.6174.5 317,003 0.0000 1.0000 53.2475.5 317,003 2,000 0.0063 0.9937 53.2476.5 315,003 0.0000 1.0000 52.9077.5 315,003 9,385 0.0298 0.9702 52.9078.5 305,618 551 0.0018 0.9982 51. 32 II-56 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 98 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 305,067 289.064 285,930 285,930 285,870 285,870 285,870 283.742 281,885 265,139 34,865 34,865 RETIREMENTS DURING AGE INTERVAL 15,902 1,250 2,128 16,735 II-57 EXPERIENCE BAND 1946-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0521 0.9479 51.23 0.0043 0.9957 48.56 0.0000 1.0000 48.35 0.0000 1.0000 48.35 0.0000 1.0000 48.35 0.0000 1.0000 48.35 0.0074 0.9926 48.35 0.0000 1.0000 47.99 0.0594 0.9406 47.99 0.0000 1.0000 45.14 0.0000 i.oooo 45.14 0.0000 1.0000 45.14 45.14 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, ~PC Page 99 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13 .5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 156,490,057 154,705,124 150,103,332 149,288,572 149.083,280 147,951,192 147,652,978 146,884,115 143.410,716 143,353.333 152,005,312 150,350,911 150,077,592 149,744,895 149.621,583 148,863,836 141,993.786 125.841,552 125,510,822 100. 949, 676 100.444,993 99,266,414 98,619.300 95,662.970 94.167,076 96,844,116 96.583,090 99,761,820 92,366,099 92,685,741 93,226.973 65,444,895 65.296,543 39,225,690 39,135,345 39.129,449 38,863,801 38,743,422 38,163,394 38,292,444 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 240,476 4,821 16,000 1,481 12,716 400 45,107 1,500 57,515 24,000 1,043 4,906 45,519 1,984 227,732 7,459 579,129 270,816 39,229 3,276 10,542 292,651 401,457 316,801 3,100 213.778 28,225 91.075 5,942 62,996 122,694 340,460 62,694 1,240 II-58 EXPERIENCE BAND 1977-2010 RETMT RATIO 0.0000 0.0000 0.0016 0.0000 0.0000 0.0001 0.0000 0.0001 0.0000 0.0000 0.0003 0.0000 0.0004 0.0002 0.0000 0.0000 0.0003 0.0000 0.0018 0.0001 0.0058 0.0027 0.0000 0.0000 0.0004 0.0000 0.0001 0.0029 0.0043 0.0034 0.0000 0.0033 0.0004 0.0023 0.0002 0.0016 0.0032 0.0088 0.0016 0.0000 SURV RATIO 1.0000 1.0000 0.9984 1.0000 1. 0000 0.9999 1.0000 0.9999 1.0000 1.0000 0.9997 i.oooo 0.9996 0.9998 1.0000 1.0000 0.9997 1.0000 0.9982 0.9999 0.9942 0.9973 1.0000 1.0000 0.9996 1. 0000 0.9999 0.9971 0.9957 0.9966 1.0000 0.9967 0.9996 0.9977 0.9998 0.9984 0.9968 0.9912 0.9984 1.0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 99.84 99.84 99.84 99.83 99.82 99.82 99.82 99.82 99.79 99.79 99.75 99.73 99.73 99.73 99.70 99.69 99.51 99.51 98.93 98.66 98.66 98.66 98.62 98.62 98.61 98.32 97.89 97.56 97.55 97.23 97.19 96.97 96.95 96.79 96.49 95.64 95.48 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 100 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS,TURBINES AN GENERATORS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1977-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 38,732.414 0.0000 1.0000 95.4840.5 38,726.842 11,572 0.0003 0.9997 95.48 41. 5 38,670,855 5,730 0.0001 0.9999 95.4542.5 38,613,281 0.0000 1.0000 95.4443.5 30,105,077 9,804 0.0003 0.9997 95.4444.5 30,084,199 15,764 0.0005 0.9995 95.4145.5 30,062,221 19,915 0.0007 0.9993 95.3646.5 30,000,551 26,639 0.0009 0.9991 95.2947.5 29,931,716 11,200 0.0004 0.9996 95.2148.5 30,105,359 66,934 0.0022 0.9978 95.17 49.5 21,958,087 137 0.0000 1. 0000 94.9650.5 12,448,288 29,244 0.0023 0.9977 94.96 51. 5 12,416,851 0.0000 1.0000 94.7452.5 12,416,589 15,784 0.0013 0.9987 94.7453.5 12,404,790 26 0.0000 1.0000 94.6254.5 12.400,432 382 0.0000 1.0000 94.6255.5 12,756,136 600 0.0000 1. 0000 94.6256.5 12,748,913 165.917 0.0130 0.9870 94.6157.5 12,621,452 105,262 0.0083 0.9917 93.3858.5 9,373,382 63.049 0.0067 0.9933 92.60 59.5 9,310.333 47,037 0.0051 0.9949 91.9860.5 6.213,320 22,126 0.0036 0.9964 91.51 61. 5 3,084,451 92,997 0.0302 0.9698 91.1962.5 2,217,624 49,642 0.0224 0.9776 88.4463.5 1,441,606 2,252 0.0016 0.9984 86.4664.5 1,439,207 3.137 0.0022 0.9978 86.3265.5 1,434,061 139,609 0.0974 0.9026 86.1366.5 1,283,168 362,628 0.2826 0.7174 77.7567.5 919.988 9 0.0000 1.0000 55.7868.5 919,933 29,459 0.0320 0.9680 55.78 69.5 890,473 5,000 0.0056 0.9944 53.9970.5 885.036 305 0.0003 0.9997 53.69 71. 5 884,432 0.0000 1.0000 53.6772.5 714,264 0.0000 1.0000 53.6773.5 321,863 2,258 0.0070 0.9930 53.6774.5 317,003 0.0000 1.0000 53.2975.5 317,003 2,000 0.0063 0.9937 53.2976.5 315,003 0.0000 1.0000 52.9677.5 315,003 9.385 0.0298 0.9702 52.9678.5 305,618 551 0.0018 0.9982 51.38 II-59 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 101 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 305,067 289,064 285,930 285,930 285,870 285,870 285,870 283.742 281,885 265.139 34. B65 34,865 RETIREMENTS DURING AGE INTERVAL 15,902 1,250 2.128 16,735 ~i-60 EXPERIENCE BAN 1977-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0521 0.9479 51.29 0.0043 0.9957 48.61 0.0000 1.0000 48.40 0.0000 1.0000 48.40 0.0000 1.0000 48.40 0.0000 1.0000 48.40 0.0074 0.9926 48.40 0.0000 1.0000 48.04 0.0594 0.9406 48.04 0.0000 1.0000 45.19 0.0000 1.0000 45.19 0.0000 1.0000 45.19 45.19 Exhibit No. 1 Case No. IPC-E-12-08 J. $panos,IPC Page 102 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 3 4 . 0 0 A C C E S S O R Y E L E C T R I C E Q U I P M E N T OR I G I N A L A N S M O O T H S U R V I V O R C U R V E S 10 0 90 19 4 6 - 2 0 1 0 E X P E R I E N C E : - OR I G I N A L C U R V E · 1 9 1 9 . 2 0 1 0 P L A C E M E N T ~ i 19 7 7 - 2 0 1 0 E X P E R I E N C E : i .. 1 9 1 9 - 2 0 1 0 P L A C E l V i E N T _ ., ~ I ~ i I \ \ 10 \ ' A S O - R L . S '\ r' B \ \ i \ i ~ i " 20 40 60 8 0 AG E I N YE A R S 10 0 12 0 14 0 80 70 0,.. ciZ 6 0 ;;;;0:::Cf 5 0 ~Z Wü ff 4 0 a. 30 20 10 in - ( ) m ~( J 5 : ~ al t i C D 6 ' -" ~ z ~ 00 0 Z (, I l ' 0 a" ' = t : . .i i : ( ) co ( ) i - ~ I\g ao IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT ORIGINAL LIFE TABLE PLACEMENT BAND 1919-2010 EXPERIENCE BAND 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 49,202,076 578,020 0.0117 0.9883 100.00 0.5 46.390,647 0.0000 1. 0000 98.83 1. 5 44,438, B89 16,513 0.0004 0.9996 98.832.5 41,399,325 0.0000 1. 0000 98.79 '3.5 40,459,408 19,752 0.0005 0.9995 98.794.5 40,128,490 138,943 0.0035 0.9965 98.745.5 39,678,326 41,423 0.0010 0.9990 98.40 6.5 38,976,682 117,455 0.0030 0.9970 98.30 7.5 38,596.010 59,962 0.0016 0.9984 98.008.5 37,777,852 330,402 0.0087 0.9913 97.85 9.5 36,704,751 117,100 O. 0032 0.9968 96,9910.5 34,335.744 352,779 0.0103 0.9897 96.681l.5 32,509,850 305,927 0.0094 0.9906 95.6912.5 27,293,745 115.849 0.0042 0.9958 94.79 13.5 23.676,664 182,446 O. 0077 0.9923 94.3914.5 22.742.435 97,880 0.0043 0.9957 93.6615.5 19,775,636 118,853 O. 0060 0.9940 93.2616.5 16,780,574 87,570 0.0052 0.9948 92.6917.5 16,529,541 373,827 0, 0226 0.9774 92.21 18.5 13,836,720 75,734 0.0055 0.9945 90.13 19.5 12,997,882 444,419 0.0342 0.9658 89.6320.5 12,495,857 159.163 0.0127 0.9873 86.57 21. 5 12,283,167 109,725 0.0089 0.9911 85.4722.5 12,096.268 16,479 0.0014 0.9986 84.7023.5 11,844,811 107.448 0.0091 0.9909 84.5924.5 11,569,443 22.900 0.0020 0.9980 83.8225.5 11,379.501 53,364 0.0047 0.9953 83.65 26.5 11,306,892 87,508 0.0077 0.9923 83.2627.5 9,489,148 62,626 0.0066 0.9934 82.6228.5 9,303,204 26,224 0.0028 0.9972 82.07 29.5 9,254,485 168,135 0.0182 0.9818 81.8430.5 6,758,703 57,634 0.0085 0.9915 80.3531.5 6,628,232 43,292 0.0065 0.9935 79.67 32.5 4,356,941 110,793 0.0254 0.9746 79.1533.5 4,224,230 44.771 0.0106 0.9894 77.1334.5 4,134,228 107,953 0.0261 0.9739 76.32 35.5 3,972,234 12,580 0.0032 0.9968 74.3236.5 3,959,655 22,102 0.0056 0.9944 74.0937.5 3,876,981 149.621 0.0386 0.9614 73.68 38.5 3,718,945 109,595 0.0295 0.9705 70.83 11-62 Exhibit No. 1 Case NO.IPC-E-12-Qa J. Spanos. IPC Page 104 Qf491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 3,568.023 6.244 0.0017 0.9983 68.7440.5 3.551,465 16.737 0.0047 0.9953 68.6241.5 3,521,337 44,473 0.0126 0.9874 68.3042.5 3,442,779 51,703 0.0150 0.9850 67.4443.5 2,464,359 27,872 0.0113 0.9887 66.4344.5 2,433,686 26,757 0.0110 0.9890 65.6745.5 2,390,489 141,173 0.0591 0.9409 64.9546.5 2,220,791 55,448 0.0250 0.9750 61.1247.5 2,155.958 24.995 0.0116 0.9884 59.5948.5 2,129,699 51,508 0.0242 0.9758 58.90 49.5 1,484,088 59.119 o . 0398 0.9602 57.4850.5 691,522 27,013 0.0391 0.9609 55.19 51. 5 663.641 39,613 0.0597 0.9403 53.0352.5 617,564 8,815 0.0143 0.9857 49.8653.5 608.749 160 0.0003 0.9997 49.1554.5 608,250 1,249 0.0021 0.9979 49.1455.5 604,767 0.0000 1.0000 49.0456.5 597,978 13,530 0.0226 0.9774 49.0457.5 584,448 287 0.0005 0.9995 47.9358.5 380,075 616 0.0016 0.9984 47.91 59.5 356,961 17,314 0.0485 0.9515 47.8360.5 339.315 15,994 0.0471 0.9529 45.51 61. 5 230,019 8.560 0.0372 0.9628 43.3662.5 165,322 915 0.0055 0.9945 41.7563.5 130,924 3,570 0.0273 0.9727 41.5264.5 117,934 3,511 0.0298 0.9702 40.3965.5 114,121 3.311 0.0290 0.9710 39.1866.5 109,836 1,172 0.0107 0.9893 38.0567.5 108,664 0.0000 1.0000 37.6468.5 108,344 0.0000 1.0000 37.64 69.5 95,082 0.0000 1.0000 37.6470.5 94,430 0.0000 1.0000 37.6471.5 94.430 1,176 0.0125 0.9875 37.6472.5 82,877 0.0000 1.0000 37.1773.5 60,177 0.0000 1.0000 37.1774.5 58,814 0.0000 1.0000 37.1775.5 58,814 0.0000 1.0000 37.1776.5 58,811 0.0000 1.0000 37.1777.5 58,811 120 0.0020 0.9980 37.1778.5 58,538 8,952 0.1529 0.8471 37.10 111-63 Exhibit NO.1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 105 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 49,586 57 0.0011 0.9989 31. 4280.5 49.264 2,544 0.0516 0.9484 31.39 81. 5 46,720 0.0000 i.oooo 29.7782.5 45,312 0.0000 1. 0000 29.77 83.5 44,091 0.0000 1. 0000 29.77 84.5 44,075 0.0000 1. 0000 29.7785.5 44,075 0.0000 1. 0000 29.7786.5 44,075 0.0000 1.0000 29.77 87.5 44,046 0.0000 1.0000 29.7788.5 43,566 0.0000 1. 0000 29.77 89.5 4,659 0.0000 1.0000 29.7790.5 4,570 0.0000 1.0000 29.77 91. 5 29.77 ~i-64 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 106 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT ORIGINAL LIFE TABLE PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1977-2010 AGE AT EXPOSURES AT RETIREMENTS peT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 44.196,340 578,020 0.0131 0.9869 100.000.5 41.444,756 0.0000 1.0000 98.69 1. 5 39,583,399 16,183 0.0004 0.9996 98.692.5 36,546,519 0.0000 1.0000 98.653.5 35,690,383 12,320 0.0003 0.9997 98.654.5 35,403,753 138,936 0.0039 0.9961 98.625.5 35,028,511 40,463 0.0012 0.9988 98.236.5 34,348,860 117,455 0.0034 0.9966 98.127.5 33,972,165 51.327 0.0015 0.9985 97.788.5 33,154,551 318,025 0.0096 0.9904 97.63 9.5 33,290,149 113,474 0.0034 0.9966 96.7010.5 30,930,028 351,435 0.0114 0.9886 96.3711.5 29,173,230 294,519 0.0101 0.9899 95.2712.5 24,085,698 113,011 0.0047 0.9953 94.3113.5 20,503,443 124,763 0.0061 0.9939 93.8714.5 19,634.962 91,967 0.0047 0.9953 93.3015.5 17,579,371 113,085 0.0064 0.9936 92.8616.5 15,418,325 80,940 0.0052 0.9948 92 .2617.5 15,230.472 372,099 0.0244 0.9756 91.7818.5 12,558,245 74,508 0.0059 0.9941 89.54 19.5 11,721,936 444,051 0.0379 0.9621 89.0120.5 11,228,585 148,304 0.0132 0.9868 85.63 21. 5 11,029,790 97,838 0.0089 0.9911 84.5022.5 10,881,801 15,288 0.0014 0.9986 83.7523.5 10,636,139 23,845 0.0022 0.9978 83.6424.5 10,577,467 22,900 0.0022 0.9978 83.4525.5 10,438.788 51.696 0.0050 0.9950 83.2726.5 10,413,861 73,760 0.0071 0.9929 82.8527.5 8,868,665 56,282 0.0063 0.9937 82.2728.5 8,930,557 26,087 0.0029 0.9971 81.75 29.5 9,008,954 165,774 0.0184 0.9816 81. 5130.5 6.530,285 44,437 0.0068 0.9932 80.01 31. 5 6,413,422 42.583 0.0066 0.9934 79.4632.5 4,143,815 104,872 0.0253 0.9747 78.9433.5 4,017.025 44,379 0.0110 0.9890 76.9434.5 3,927,734 103,435 0.0263 0.9737 76.0935.5 3,784,744 12,580 0.0033 0.9967 74.0836.5 3,772,884 21,807 0.0058 0.9942 73.8437.5 3,690,505 148,977 0.0404 0.9596 73.4138.5 3.556,968 108.254 o .0304 0.9696 70.45 111-65 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 107 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1977-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 3,452.269 6,244 0.0018 0.9982 68.3040.5 3,437,074 16,527 0.0048 0.9952 68.1841.5 3.407,156 44.473 0.0131 0.9869 67.8542.5 3,328,600 45,457 0.0137 0.9863 66.9743.5 2,356,426 21,702 0.0092 0.9908 66.0544.5 2,332,077 25,880 0.0111 0.9889 65.4445.5 2,289,757 141,173 0.0617 0.9383 64.7246.5 2,120,324 53,384 0.0252 0.9748 60.7347.5 2.057,556 21,504 0.0105 0.9895 59.2048.5 2,038.287 50,484 0.0248 0.9752 58.58 49.5 1.394,920 57,169 0.0410 0.9590 57.1350.5 604,320 27,013 0.0447 0.9553 54.7951.5 576,440 39,613 0.0687 0.9313 52.34 52.5 530,362 8,815 0.0166 0.9834 48.7453.5 521,576 160 0.0003 0.9997 47.93 54.5 521,737 1,249 0.0024 0.9976 47.92 55.5 587,870 0.0000 1.0000 47.8056.5 581,171 13,530 0.0233 0.9767 47.8057.5 584,448 287 0.0005 0.9995 46.69 58.5 380,075 616 0.0016 0.9984 46.67 59.5 356.961 17,314 0.0485 0.9515 46.5960.5 339,315 15.994 0.0471 0.9529 44.33 61.5 230,019 8,560 0.0372 0.9628 42.2462.5 165,322 915 0.0055 0.9945 40.6763.5 130,924 3,570 0.0273 0.9727 40.4464.5 11 7,934 3,511 0.0298 0.9702 39.3465.5 114,121 3,311 0.0290 0.9710 38.1766.5 109,836 1,172 0.0107 0.9893 37.0667.5 108.664 0.0000 1.0000 36.67 68.5 108,344 0.0000 1.0000 36.67 69.5 95,082 0.0000 1. 0000 36.6770.5 94,430 O. 0000 1. 0000 36.6771.5 94,430 1,176 0.0125 0.9875 36.67 72 .5 82,877 0.0000 1. 0000 36.2173.5 60, i 77 0.0000 1.0000 36.2174.5 58,814 0.0000 1.0000 36.2175.5 58,814 0.0000 1.0000 36.2176.5 58,811 0.0000 1.0000 36.2177.5 58,811 120 0.0020 0.9980 36.2178.5 58,538 B,952 0.1529 0.8471 36.14 ~i-66 Exhibit No. 1 Case No. IPC.E-12-û8 J. Spanos, IPC Page 108 of 491 IDAHO POWER COMPAN ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1977-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 49,586 57 0.0011 0.9989 30.61 BO.5 49,264 2.544 0.0516 0.9484 30.58 81. 5 46,720 0.0000 i.oooo 29.0082.5 45,312 0.0000 1.0000 29.0083.5 44,091 0.0000 1.0000 29.0084.5 44,075 0.0000 i.oooo 29.0085.5 44.075 0.0000 1.0000 29.0086.5 44,075 0.0000 1. 0000 29.0087.5 44.046 0.0000 1.0000 29.0088.5 43,566 0.0000 1.0000 29.00 89.5 4,659 0.0000 i. 0000 29.0090.5 4,570 0.0000 i.oooo 29.00 91. 5 29.00 ~i-67 Exhibit No. 1 Case No. IPC-E.12.Q8 J. Spanos, ~PC Page 109 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 3 5 . 0 0 M I S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 10 i 1 9 4 6 - 2 0 1 0 E X P E R I E N C E : OR I G I N A L C U R V E · 1 9 1 9 - 2 0 1 0 P L A C E M E N T 19 7 7 - 2 0 1 0 E X P E R I E N C E : ~ · 1 9 1 9 - 2 0 1 g P l ß C E f v l E N T i ..~ I ~ I "' " ,. "., .. '. ., n ~W A ' j ' - K L i i i 20 40 60 8 0 AG E I N Y E A R S 10 0 12 0 14 0 90 80 70 m00 (.Z 6 0 ););0: ::C/ 5 0 I-ZWu ff 4 0 Q. 30 20 'H - ( " ~ ~ e n g ¡ ; : CD ' t C D e ' ~ Q ) z : : .. 5 0 z °C I ' 0 o' - . .. - " " - " . i : ( " co ( " , -" n i ..g o o IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT ORIGINAL LIFE TABLE PLACEMENT BAND 1919-2010 EXPERIENCE BAN 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 19,439,661 62,065 0.0032 0.9968 100.000.5 18,541,634 1,057 0.0001 0.9999 99.68 1. 5 17,832,856 2,391 0.0001 0.9999 99.682.5 16,775,954 6,696 0.0004 0.9996 99.663.5 15,920.606 1,982 0.0001 0.9999 99.624.5 15,698,937 14,978 0.0010 0.9990 99.615.5 14,752,674 9,689 0.0007 0.9993 99.516.5 14,440,223 18,197 0.0013 0.9987 99.457.5 14,325,509 25,535 0.0018 0.9982 99.328.5 13,941,429 50,729 0.0036 0.9964 99.15 9.5 13,689,015 42,107 0.0031 0.9969 98.7910.5 13,417.413 54,088 0.0040 0.9960 98.4811.5 13,118.947 3,346 0.0003 0.9997 98.0912.5 12,903,052 95,324 0.0074 0.9926 98.0613.5 11,992,398 1,715 0.0001 0.9999 97.3414.5 11,480,846 17,503 0.0015 0.9985 97.3215.5 10,678,190 41,785 0.0039 0.9961 97.1716.5 9,513,782 20,390 0.0021 0.9979 96.7917.5 9.247,016 8,169 0.0009 0.9991 96 .5918.5 8,537,973 7,027 0.0008 0.9992 96 .50 19.5 8,284,194 9.853 0.0012 0.9988 96.4220.5 8.167,666 7,325 0.0009 0.9991 96 .31 21. 5 8,019,265 1,488 0.0002 0.9998 96.2222.5 7,950,159 8,830 0.0011 0.9989 96.2023.5 7,908,507 37,811 0.0048 0.9952 96.1024.5 7,802,261 16.221 0.0021 0.9979 95.6425.5 7,739,229 30,559 0.0039 0.9961 95.4426.5 7,673,749 55.504 0.0072 0.9928 95.0627.5 6,557,366 15,332 0.0023 0.9977 94.3728.5 6,454,524 7,116 0.0011 0.9989 94.15 29.5 6,379,281 56,565 0.0089 0.9911 94.0530.5 3,914,059 12,569 0.0032 0.9968 93.21 31. 5 3,881,104 14,541 0.0037 0.9963 92.9132.5 2,518,330 5.101 0.0020 0.9980 92.5733.5 2,509.585 13.043 0.0052 0.9948 92.3834.5 2,486,108 1,142 0.0005 0.9995 91. 9035.5 2,483,467 4,629 0.0019 0.9981 91.8636.5 2,460,853 2,448 0.0010 0.9990 91.6937.5 2,451,958 662 0.0003 0.9997 91.5938.5 2,446,655 i,168 0.0005 0.9995 91.57 1/-69 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 111 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT ORIGINAL LIFE TABLE,CONT. PLACEMENT BAND 1919-2010 EXPERIENCE BAND 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 2,444,710 1.451 0.0006 0.9994 91.53 40.5 2,442,698 6,537 0.0027 0.9973 91. 47 41. 5 2,429,836 6.307 0.0026 0.9974 91. 2342.5 2,422,512 3,167 0.0013 0.9987 90.9943.5 1.805,820 240 0.0001 0.9999 90.8744.5 1,802,746 10,180 0.0056 0.9944 90.8645.5 1.792,163 5,922 0.0033 0.9967 90.35 46.5 1.774,747 736 0.0004 0.9996 90.0547.5 1,772,191 3,784 0.0021 0.9979 90.0148.5 1,765,009 2,574 0.0015 0.9985 89.82 49.5 1,437,700 681 0.0005 0.9995 89.6950.5 974,654 103 0.0001 0.9999 89.64 51. 5 974,519 7B6 0.0008 0.9992 89.6352.5 973,151 242 0.0002 0.9998 89.56 53.5 969,510 1,101 0.0011 0.9989 B9.54 54.5 958.842 247 0.0003 0.9997 89.4455.5 958,596 583 0.0006 0.9994 89.42 56.5 957,239 3,387 0.0035 0.9965 89.3657.5 952,329 119 0.0001 0.9999 89.0558.5 748,904 11,414 0.0152 0.9848 89.03 59.5 737,006 768 0.0010 0.9990 87.6860.5 535,782 2,660 0.0050 0.9950 B7.59 61. 5 361,772 1,492 0.0041 0.9959 B7.1562.5 236,670 360 0.0015 0.9985 86.7963.5 144,171 40 0.0003 0.9997 86.6664.5 87,790 0.0000 1.0000 86.6465.5 87,679 0.0000 1.0000 86.6466.5 86,791 0.0000 1.0000 86.6467.5 86,375 0.0000 1.0000 86.64 6B.5 B6,375 81 0.0009 0.9991 86.64 69.5 86,294 83 0.0010 0.9990 86.5570.5 86,211 236 0.0027 0.9973 86.47 71. 5 85,975 312 0.0036 0.9964 86.2372.5 50,172 62 0.0012 0.9988 85.9273.5 44,378 77 0.0017 0.9983 85.8274.5 44,302 0.0000 1.0000 85.6775.5 44.302 0.0000 1.0000 85.6776.5 44,302 0.0000 1.0000 85.6777.5 44,302 0.0000 1.0000 85.6778.5 44,302 193 0.0044 0.9956 85.67 ~i-70 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 112 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 44,038 43,943 43,834 43,361 43,361 43,240 42,925 42,659 42.659 42,659 729 629 RETIREMENTS DURING AGE INTERVAL 9,346 100 111-71 30 EXPERIENCE BAN 1946-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0007 0.9993 85.29 0.0000 1.0000 85.24 0.0000 1.0000 85.24 0.0000 1. 0000 85.24 0.0000 1.0000 85.24 0.0000 1. 0000 85.24 0.0000 1.0000 85.24 0.0000 1.0000 85.24 0.0000 1.0000 85.24 0.2191 0.7809 85.24 0.1371 0.8629 66.56 0.0000 1. 0000 57.44 57.44 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 113 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLAT EQUIPMENT ORIGINAL LIFE TABLE PLACEMENT BAND 1919-2010 EXPERIENCE BAN 1977-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 16,876,274 62,065 0.0037 0.9963 100.00 0.5 15,987,575 847 0.0001 0.9999 99.63 1.5 15,281.298 0.0000 1.0000 99.63 2.5 14,263,732 0.0000 1. 0000 99.63 3.5 13,422,746 1,192 0.0001 0.9999 99.63 4.5 13,207,943 13.062 0.0010 0.9990 99.625.5 12,265,555 7,202 0.0006 0.9994 99.52 6.5 11,958.175 17,829 0.0015 0.9985 99.46 7.5 11,811,640 25,535 0.0022 0.9978 99.31 8.5 11,421,071 48,044 0.0042 0.9958 99.10 9.5 11,792,768 41.690 0.0035 0.9965 98.68 10.5 11,527,331 52,004 0.0045 0.9955 98.33 11.5 11,233.012 3,186 0.0003 0.9997 97.89 12.5 11,041.344 94,147 0.0085 0.9915 97.86 13.5 10,134.066 1.377 0.0001 0.9999 97.03 14.5 9,627,650 16,896 0.0018 0.9982 97.01 15.5 9,181,794 40,942 0.0045 0.9955 96.84 16.5 8,484.854 20,390 0.0024 0.9976 96.41 17 .5 8,236,162 7,146 0.0009 0.9991 96.18 18.5 7,532,448 7.027 0.0009 0.9991 96.10 19.5 7,283,661 1.830 0.0003 0.9997 96.0120.5 7,185.016 7,161 0.0010 0.9990 95.98 21. 5 7,038,201 412 0.0001 0.9999 95.89 22.5 6,972,193 7.153 0.0010 0.9990 95.8823.5 6,936,732 37,719 0.0054 0.9946 95.78 24.5 7,007,942 16,181 0.0023 0.9977 95.26 25.5 6,955,228 29,634 0.0043 0.9957 95.04 26.5 7,095,378 55,504 0.0078 0.9922 94.6427.5 6,181,802 14,769 0.0024 0.9976 93.90 28.5 6,213.754 7,106 0.0011 0.9989 93.67 29.5 6,231,634 56.565 0.0091 0.9909 93.57 30.5 3,823,112 12.348 0.0032 0.9968 92.72 31. 5 3,790,593 14,043 0.0037 0.9963 92.42 32.5 2,429,206 5,101 0.0021 0.9979 92.07 33.5 2,420,877 13.043 0.0054 0.9946 91.88 34.5 2,397,399 1.142 0.0005 0.9995 91.39 35.5 2,394.773 4,629 0.0019 0.9981 91. 34 36.5 2,372,160 2,352 0.0010 0.9990 91.1737.5 2,363,444 662 0.0003 0.9997 91.08 38.5 2,395,593 1,168 0.0005 0.9995 91.05 111-72 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 114 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MI SCELLANEOUS POWER PLANT EQUIPMENT ORIGINAL LIFE TABLE.CONT. PLACEMENT BAND 1919-2010 EXPERIENCE BAND 1977-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 2,400,189 1,451 0.0006 0.9994 91.0140.5 2,398,239 6,537 0.0027 0.9973 90.95 41. 5 2,385,454 6,307 0.0026 0.9974 90.7042.5 2,378,130 3,167 0.0013 0.9987 90.4643.5 1,761,437 240 0.0001 0.9999 90.3444.5 1.758,363 10,180 0.0058 0.9942 90.3345.5 1,747,850 5,922 0.0034 0.9966 89.8146.5 1,730,693 736 0.0004 0.9996 89.5047.5 1,728,246 3,784 0.0022 0.9978 89.4648.5 1,721,537 2,574 0.0015 0.9985 89.27 49.5 1,394,227 681 0.0005 0.9995 89.1450.5 931,303 103 0.0001 0.9999 89.09 51. 5 931,563 786 0.0008 0.9992 89.0852.5 930,462 242 0.0003 0.9997 89.0153.5 926,821 1,101 0.0012 0.9988 88.9854.5 916,153 247 0.0003 0.9997 88.8855.5 957,829 583 0.0006 0.9994 88.8556.5 956,479 3,387 0.0035 0.9965 88.8057.5 952,329 119 0.0001 0.9999 88.4958.5 748,904 11,414 0.0152 0.9848 88.47 59.5 737,006 768 0.0010 0.9990 87.1360.5 535,782 2,660 0.0050 0.9950 87.04 61. 5 361,772 1,492 0.0041 0.9959 86.6062.5 236.670 360 0.0015 0.9985 86.2563.5 144,171 40 0.0003 0.9997 86.1164.5 87,790 0.0000 1.0000 86.0965.5 87,679 0.0000 1.0000 86.0966.5 86,791 0.0000 1.0000 86.0967.5 86,375 0.0000 1.0000 86.0968.5 86,375 81 0.0009 0.9991 86.09 69.5 86,294 83 0.0010 0.9990 86.0170.5 86,211 236 0.0027 0.9973 85.93 71. 5 85,975 312 0.0036 0.9964 85.6972.5 50,172 62 0.0012 0.9988 85.3873.5 44,378 77 0.0017 0.9983 85.2874.5 44,302 0.0000 i.oooo 85.1375.5 44,302 0.0000 1. 0000 85.1376.5 44,302 0.0000 1. 0000 85.1377.5 44,302 0.0000 i.oooo 85.1378.5 44,302 193 0.0044 0.9956 85.13 ~i-73 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 115 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLAT EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81.5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 44,038 43.943 43,834 43.361 43,361 43,240 42,925 42,659 42,659 42.659 729 629 RETIREMENTS DURING AGE INTERVAL 9,346 100 ~i-74 30 EXPERIENCE BAND 1977-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0007 0.9993 84.76 0.0000 1.0000 84.70 0.0000 1. 0000 84.70 0.0000 1. 0000 84.70 0.0000 1.0000 84.70 0.0000 1.0000 84.70 0.0000 1. 0000 84.70 0.0000 1. 0000 84.70 0.0000 1.0000 84.70 0.2191 0.7809 84.70 0.1371 0.8629 66.14 0.0000 1.0000 57.07 57.07 Exhibit NO.1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 1160f491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 3 6 . 0 0 R O A D S i R A I L R O A D S A N D B R I D G E S OR I G I N A L A N S M O O T H S U R V I V O R C U R V E S 10 0 70 -~ OR I G I N A L - ~ ~ ; ~ ~ - : î - 9 4 6 - 2 Õ i Õ ' - Ê X P E R l E N C ~ - i i '- i 1 9 1 9 - 2 0 1 0 P L A C E f I l E N T .. . . . i ~ " i \\ \ iC WA 7 5 - R 3 .' .. ' \ .' ..~ - ." I ,, 20 40 60 8 0 AG E I N Y E A R S 10 0 12 0 14 0 90 80 i-.oi ~ 6 0 5=:;0:::(j 5 0 i-Z WU0: . w , i Q ll 30 20 10 ;; ~ Q c i co ( J t i : : al o C l e ' -" Q ) z ; : .. S o z .. t i ' 0 o' - . "" - " t l - " ~ - 0 0 co 0 i .. r r ..g oo IDAHO POWER COMPANY ACCOUNT 336. 00 ROADS, RAILROADS AND BRIDGES PLACEMENT BAND 1919-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 6,913,999 6,884,891 6,884,835 6,884,835 6,875,523 6,875.523 6,875,578 6,875.578 6.881,783 6,891,361 6,891,361 6,891,361 6,886,783 6,886,783 6.886,783 6,886,783 5.860,828 5,583,103 5,531,761 5,032,008 4,767,877 4,767,877 4,753,384 4.714,172 3.849,775 3,856,136 3.656,762 3,370,419 3,247.751 3,247,751 2,711.220 2,480,306 2,459,530 2,156,584 2,156,584 2,156,584 2,156,584 2,149,880 2,149,880 2,149,880 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 4,578 6,704 ~i-76 EXPERIENCE BAN 1946-2010 RETMT RATIO 56 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0007 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 o .0000 0.0000 0.0000 0.0031 0.0000 0.0000 0.0000 SURV RATIO 1.0000 1.0000 1.0000 1. 0000 1. 0000 1.0000 1.0000 1.0000 1.0000 i.oooo 1.0000 0.9993 i.oooo 1.0000 1.0000 i.oooo 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1. 0000 1. 0000 1.0000 1. 0000 0.9969 1. 0000 1.0000 1.0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100. 00 100.00 100.00 100.00 100.00 100.00 100. 00 100.00 100. 00 100. 00 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.93 99.62 99.62 99.62 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 118 of 491 IDAHO POWER COMPANY ACCOUNT 336.00 ROADS.RAILROADS AND BRIDGES ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 2,149,880 0.0000 1.0000 99.62 40.5 2,149,880 0.0000 1.0000 99.62 41.5 2,136,815 0.0000 1.0000 99.62 42.5 2,136,815 0.0000 1.0000 99.62 43.5 1,317,623 0.0000 1.0000 99.6244.5 1,249,556 0.0000 1.0000 99.62 45.5 1,229.193 0.0000 1.0000 99.62 46.5 1,220.599 0.0000 1.0000 99.6247.5 1,203,562 0.0000 1.0000 99.6248.5 1,198,692 0.0000 1.0000 99.62 49.5 651,686 0.0000 1.0000 99.62 50.5 377,176 0.0000 1.0000 99.62 51. 5 377,176 0.0000 1.0000 99.62 52.5 377,176 0.0000 1.0000 99.62 53.5 377,176 0.0000 1.0000 99.62 54.5 376,331 0.0000 1.0000 99.62 55.5 370,586 0.0000 1.0000 99.62 56.5 370,586 0.0000 1.0000 99.62 57.5 370,586 0.0000 1.0000 99.62 58.5 177,397 0.0000 1.0000 99.62 59.5 176,420 0.0000 1.0000 99.62 60.5 146,644 0.0000 1.0000 99.62 61.5 144,620 0.0000 1.0000 99.62 62.5 103,286 0.0000 1.0000 99.62 63.5 86,189 0.0000 1.0000 99.62 64.5 86,189 0.0000 i.oooo 99.62 65.5 86.189 0.0000 i.oooo 99.62 66.5 86,189 0.0000 1.0000 99.62 67.5 86,189 0.0000 1.0000 99,6268.5 86,189 0.0000 1.0000 99.62 69.5 86,189 0.0000 1.0000 99.62 70.5 86,134 0.0000 1.0000 99.62 71. 5 86,134 0.0000 1.0000 99.62 72.5 63,190 0.0000 1. 0000 99.6273.5 53.612 0.0000 1.0000 99.62 74.5 53.612 0.0000 1.0000 99.6275.5 53,612 0.0000 i.oooo 99.6276.5 53,612 0.0000 1.0000 99.62 77.5 53,612 0.0000 1.0000 99.62 78.5 53,612 0.0000 1.0000 99.62 ~i-77 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 119 of 491 IDAHO POWER COMPANY ACCOUNT 336.00 ROADS, RAILROADS AND BRIDGES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1919-2010 EXPERIENCE BAND 1946-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 53,612 0.0000 1. 0000 99.6280.5 53,612 0.0000 1. 0000 99.6281.5 53,612 0.0000 1.0000 99.6282.5 47,178 0.0000 1. 0000 99.6283.5 47,178 0.0000 1. 0000 99.6284.5 47,178 0.0000 1.0000 99.6285.5 47.178 0.0000 1.0000 99.6286.5 47,178 0.0000 1.0000 99.6287.5 47,178 0.0000 1.0000 99.6288.5 47,178 0.0000 i.oooo 99.62 89.5 4,412 0.0000 1.0000 99.6290.5 4,412 0.0000 1.0000 99.62 91. 5 99.62 ~i-78 Exhibit NO.1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 120 of 491 CIi:~ CI ~~i:tJ0~?i ,.0 ~ 0 ~:i Hn.,.~;:i:p:0 ::::tJ ii CI ~:ii:0 f-3:0 000n.N ;: CI0"1 ~ M 0 0 f- ~ H § ..o ,:tJ ZtJ H,: 0Hp:0 ! .., UJ I-IUz¡ZW:~¿i IX wI UJ U¡~Si UJ 0. 1000'..01°0i ~.'; I.. C\ig~iN..I . I w;; I IX I ::u ~i .. I -:~Z i G I ë2 i0~i L ~ ~ / J I or- o'" oin o"'(J0.~W)- Z w"~oM oN o.. oo~00o(J o00 or-otf o"1 oN ootooM ÐNll\ll\l:nS lN3:)l:3d ~i-79 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 121 of 491 IDAHO POWER COMPANY ACCOUNT 342.00 FUEL HOLDERS PLACEMENT BAN 1959-2008 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 4.384,560 4,384,560 4,384.560 2,951,136 2,706,058 2,706,058 680.177 712,980 712,980 712,980 32,803 32,803 32,803 32,803 32,803 32,803 32,803 ORIGINAL LIFE TABLE EXPERIENCE BAND 2001-2010 RETIREMENTS PCT SURV DURING AGE RETMT SURV BEGIN OF INTERVAL RATIO RATIO INTERVAL 0.0000 1. 0000 100.00 0.0000 1. 0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1. 0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 i.oooo 100.00 0.0000 1. 0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1. 0000 100.00 100.00 111-80 Exhibit No. 1 Case No. IPC-E-12-C8 J. Spanos,lPC Page 122 of 491 IDAHO POWER COMPANY ACCOUNT 342.00 FUEL HOLDERS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1959-2008 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 EXPERIENCE BAN 2001-2010 EXPOSURES AT BEGINNING OF AGE INTERVAL RETIREMENTS DURING AGE INTERVAL RETMT RATIO 28,503 0.0000 28,503 0.0000 28,503 0.000028,503 0.0000 28,503 0.0000 28,503 0.000028,503 0.0000 28,503 0.0000 28,503 0.0000 28,503 0.0000 111-81 SURV RATIO PCT SURV BEGIN OF INTERVAL Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 123 of 491 eni: ~ ~ Bi::: ~ ~ ~ ~ i: H ~ ~ ~(j g; en &5 ~3: 0 0o 0 0i: M :; o "' en~ M S S § ~o ..U ,:U :z ,: ~ H ~ r:-i W f-,UZ! z lU¡ W :: ! ë2 lu!WU¡~5i W 0-100 I~~00 r; fi 'r. i~~.gg ..¡N.N V' I l lu 0i I :;~ex::c:I Ui..S i c::z 0t3¡C2 ·r ~ I ¡0 /// V ) .. ~oo oen oöO o CD olf on o('~oo"''-I~ ÐNll\ll\èlnS IN3:Jèl3d o.. oCD oi. o."(fa:4:il)-Z il"4:oC' oN o.. oo ~i-82 Exhibit No. 1 Case No. IPC-E-12-D8 J. Spanos, IPC Page 124 of 491 IDAHO POWER COMPANY ACCOUNT 343.00 PRIME MOVERS PLACEMENT BAN 2001-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 B.5 9.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 116,735,140 93,697,367 91,628,893 43,495,555 29,957,034 29.371,488 28,085,312 28,085,312 27,034,103 25,261,523 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 121,838 20,000 119,468 837,464 111-83 EXPERIENCE BAN 2001-2010 RETMT RATIO 0.0000 0.0013 0.0000 0.0000 0.0000 0.0007 0.0000 0.0043 0.0310 0.0000 SURV RATIO 1.0000 0.9987 1.0000 1.0000 1.0000 0.9993 1.0000 0.9957 0.9690 1. 0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 99.87 99.87 99.87 99.87 99.80 99.80 99.38 96.30 96.30 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 125 of 491 u:r.~ g;~ u o~ f- ii z ~ ~~ r. t;:2 Z iio r. t)u CJ u:ii 0 :i f; 0 ~o "" ~0. "" u: o M~ f- i:i: S ~H 0 U ~U ~ .- H CJHiio or-r------ .¡w tžIU!æ~, I ff w,i Q. ~SIX ''w c.: ,0 co' I~O'~~! ì.. "''glD iN~~Nif I ~ lLI, U 7 I .."t iz I t3 ë2 Ó0cI.. .//// / i o(! oio o""(/0:.:W)-Z Woc:oC" oN o,. oo oN 00oino..ot:ooc¡or-o00 oIV ÐNII\IM::JS IN3::tl3d ~i-84 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 126 of 491 IDAHO POWER COMPANY ACCOUNT 344.00 GENERATORS ORIGINAL LIFE TABLE PLACEMENT BAND 1967-2008 EXPERIENCE BAND 2001-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 31,159,953 0.0000 1.0000 100.000.5 31,159,953 0.0000 1.0000 100.001.5 31,159,953 0.0000 1. 0000 100.002.5 21,325,732 0.0000 1. 0000 100.00'3.5 21,325.732 0.0000 1.0000 100.004.5 13,185,733 0.0000 1.0000 100.005.5 13,223,124 0.0000 1. 0000 100.006.5 13,223,124 0.0000 1.0000 100.007.5 13,223,124 0.0000 1.0000 100.008.5 13,203,426 0.0000 1.0000 100.00 9.5 37,391 0.0000 1.0000 100.0010.5 37,391 0.0000 1.0000 100.0011.5 37,391 0.0000 1.0000 100.0012.5 37.391 0.0000 1.0000 100.00 13 .5 37,391 0.0000 1.0000 100.0014.5 37,391 0.0000 1.0000 100.0015.5 100.0016.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 484.556 0.000034.5 484.556 0.000035.5 484,556 0.000036.5 484,556 0.000037.5 484,556 0.000038.5 484,556 0.0000 ~i-85 Exhibit NO.1 Case No. IPC-E.12-08 J. Spanos, IPC Page 127 of 491 IDAHO POWER COMPANY ACCOUNT 344.00 GENERATORS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1967-2008 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 484,556 484,556 484,556 484,556 RETIREMENTS DURING AGE INTERVAL ~i-86 EXPERIENCE BAND 2001-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0000 SURV RATIO peT SURV BEGIN OF INTERVAL Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos,lPC Page 128 of 491 f-Zrx::i:H tr::rx();:rx g;...i uu~H;,~0 ~f-;: U Hi:rx ;:::..~0 rx ::u tr p:;,:irxp:f-~0 00tr0tri:rx :: U tr0U ~.i Q Q ~H 0 ..0 .i U1 ZH"f 0MH f-p: S 0 0Uu.i .- W f-Uz2: UJ~:;i:WUJ U~ ::UJ a.00.. ..00NN ch ,.Lr0- ..' 0- 0-.. .. V. UJ ¿;:i:if::U ~ -Jc:z ê .~i:0 / 1/ / I . g ~g or',o..~o"'o""oC,j o ÐNIAIAl:nS IN3:)l:3d or- o(0 oU1 o"'(/ exc:w::z w Clc:o(" oN o., oo ~i-87 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 129 of 491 IDAHO POWER COMPANY ACCOUNT 345.00 ACCESSORY ELECTRICAL EQUIPMENT ORIGINAL LIFE TABLE PLACEMENT BAND 1967-2010 EXPERIENCE BAN 1999-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 25,000.589 0.0000 1. 0000 100.000.5 24,B72,221 0.0000 1.0000 100. 001.5 16,541,969 0.0000 1. 0000 100.002.5 14,028.637 O. 0000 1. 0000 100.003.5 4.654,668 0.0000 1.0000 100.004.5 4,654,668 0.0000 1.0000 100.005.5 3,135,257 0.0000 1.0000 100.006.5 2,448,474 0.0000 1.0000 100.007.5 2,185,218 0.0000 1.0000 100.008.5 2,178,814 0.0000 1.0000 100.00 9.5 20.554 0.0000 1. 0000 100.0010.5 20,554 0.0000 1.0000 100.0011.5 17,138 0.0000 1. 0000 100.0012.5 17,138 0.0000 1.0000 100.0013.5 17,138 0.0000 1.0000 100.0014.5 17.138 10.046 0.5862 0.4138 100.0015.5 7,092 0.0000 1.0000 41. 3816.5 7,092 0.0000 1.0000 41.3817.5 7,092 0,0000 1.0000 41. 3818.5 7,092 0.0000 1.0000 41. 38 19.5 7,092 0.0000 1.0000 41.3820.5 7,092 0.0000 1. 0000 41.3821.5 7,092 0.0000 1.0000 41. 3822.5 7.092 0.0000 1.0000 41.3823.5 41.3824.5 25.5 26.5 27.5 392 0.000028.5 392 0.0000 29.5 392 0.000030.5 392 0.000031.5 19,918 0.000032.5 19.918 0.000033.5 19,918 0.000034.5 19 ¡ 918 0.000035.5 19,918 0.000036.5 19,918 0.000037.5 19,918 0.000038.5 19,918 0.0000 ~i-88 Exhibit NO.1 Case NO.IPC-E-12-08 J. Spanos. IPC Page 130 of 491 IDAHO POWER COMPANY ACCOUNT 345.00 ACCESSORY ELECTRICAL EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1967-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 19,526 19,526 19,526 19,526 RETIREMENTS DURING AGE INTERVAL ~i-89 EXPERIENCE BAN 1999-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0000 SURV RATIO PCT SURV BEGIN OF INTERVAL Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 131 of 491 eOo oZ 6 0 :;:;a:::(J 5 ( ¡-Z LUÜ ff 4 0 a. "~ ( j ~ £l e n ! l : : C1 l t l ( l õ ' ~Q ) z ; : (ù 5 0 z I\ C I ' 0 !a " ' " õ : " .¡ " ( j (0 ( j . .. r ; ..g ID A H O P O W E R C O M P A N Y AC C O U N T 3 4 6 . 0 0 M I S C E L L A N E O U S P O W E R P L A N T E Q U I P M E N T OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 -- ~ I TO R I G I N ~ ~ ~ R V ~ . 1 9 9 9 - 2 0 1 0 - Ë X P E R ï E - N C E ~ l i . . _ _ _ i 9 s . 0 , ~ ? 0 1 0 P ~ ~ ~ ~ l e N T . . .. . ~ I)i '\ \ " i( \ W A 3 5 - R 2 . 5 i \ i I I I I 90 80 70 30 20 10 oo 10 20 30 4 0 AG E I N Y E A R S 50 60 70 IDAHO POWER COMPANY ACCOUNT 346.00 MISCELLANEOUS POWER PLANT EQUIPMENT PLACEMENT BAND 1950-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13 .5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 3,284,146 3,219.677 3.214,979 2.258,084 1,385,966 1,380,632 1.374,532 1,366.857 1,153.231 1,106,665 862 862 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 174,918 ~i-91 EXPERIENCE BAN 1999-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.1280 0.8720 100.00 0.0000 1. 0000 87.200.0000 1.0000 87.20 0.0000 1.0000 87.20 0.0000 1.0000 87.20 87.20 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,IPC Page 133 of 491 IDAHO POWER COMPANY ACCOUNT 346.00 MISCELLANEOUS POWER PLANT EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1950-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41.5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 EXPERIENCE BAN 1999-2010 EXPOSURES AT BEGINNING OF AGE INTERVAL RETIREMENTS DURING AGE INTERVAL RETMT RATIO 93 0.0000 93 0.0000 93 0.0000 93 0.0000 93 0.0000 143 0.0000 143 0.0000 143 0.0000 143 0.0000 143 0.0000 143 0.0000 143 0.0000 50 0.0000 50 0.0000 50 0.0000 50 0.0000 50 0.0000 ~i-92 SURV RATIO PCT SURV BEGIN OF INTERVAL Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 134 of 491 ui E-Zri ui::riri:;ui ii.:::ri u ~ ~ii0 ~:;HP- ui :; :: E-!3o ::U G uiHii ii ::ri E-:; 0 0 ~ ~0::..ui0 ~0 ~0 NH0 .. U1 ~(V ZH E-G S Hii00UU~ I..! UJ I- I~m L~ dJwu I~~100lõõI~~í~~i~~I: i ~I ;: Ii¡ 0 ',_. ) 0o /v -/v c; Io'" c:so¡. i ! /v/v./ /v oo ooçigor-o(!o....o"T oM oN ÐNIAIA~ns lN38tl3d ~i-93 o':.. oN.. g encr.:wr ~ wø.:o(0 ~ oN 0° Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 135 of 491 IDAHO POWER COMPANY ACCOUNT 350.20 LAND RIGHTS AN EASEMENTS PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11. 5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 22,451,998 20,093,274 19,306,545 18,679,563 16,777,476 16,343,844 14,091,555 13,864,057 10,664,340 8,222,001 6,042,945 4,797,380 4,681,882 4,936,681 3,729,110 3,811,074 4,221,938 3,242,443 3.103,954 3,110,457 2,850,829 2,773,437 2,903,910 3,406,158 3.279.228 3,186,726 3,147,399 3,260,461 3.017,110 2,859,340 2.651.071 1,585,767 1.755,420 1,773,164 1.696.164 1,720,719 1.814,406 1.697,585 1,215,846 1,230,789 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 143.339 7,302 3.142 5 14,412 ~i-94 EXPERIENCE BAN 1996-2010 RETMT RATIO 0.0000 0.0071 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0015 0.0000 0.0000 0.0008 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 54 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0079 0.0000 0.0000 0.0000 SURV RATIO 1.0000 0.9929 1.0000 1. 0000 1.0000 1.0000 1. 0000 1. 0000 1. 0000 1.0000 1.0000 0.9985 1. 0000 1.0000 0.9992 1.0000 1.0000 1.0000 1. 0000 1.0000 1.0000 1.0000 1.0000 1. 0000 1.0000 1.0000 1. 0000 1.0000 1.0000 1.0000 1.0000 1. 0000 1. 0000 1. 0000 1.0000 1.0000 0.9921 1.0000 1.0000 1.0000 PCT SURV BEGIN OF INTERVAL 100.00 100.00 99.29 99.29 99.29 99.29 99.29 99.29 99.29 99.29 99.29 99.29 99.14 99.14 99.14 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 99.05 98.26 98.26 98.26 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 136 of 491 IDAHO POWER COMPANY ACCOUNT 350.20 LAND RIGHTS AN EASEMENTS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAND 1919-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 1,290,805 0.0000 1.0000 98.2640.5 1.285,788 0.0000 1.0000 98.2641.5 1,174,961 0.0000 i.oooo 98.2642.5 1,242,917 0.0000 1.0000 98.2643.5 1,189,841 0.0000 1.0000 98.2644.5 1,086,437 0.0000 1.0000 98.2645.5 1,114,863 0.0000 1. 0000 98.2646.5 971,781 0.0000 1.0000 98.2647.5 881,842 0.0000 1.0000 98.2648.5 856.469 0.0000 1.0000 98.26 49.5 610,408 367 0.0006 0.9994 98.2650.5 459,298 0.0000 1. 0000 98.20 51. 5 416,582 0.0000 1.0000 98.2052.5 396,074 0.0000 1.0000 98.2053.5 377,019 0.0000 1. 0000 98.2054.5 326,134 0.0000 1. 0000 98.2055.5 319,792 0.0000 1.0000 98.2056.5 303.899 0.0000 1.0000 98.2057.5 224,495 0.0000 1. 0000 98.2058.5 170,520 0.0000 1.0000 98.20 59.5 107,249 0.0000 1.0000 98.2060.5 45,725 0.0000 1.0000 98.20 61. 5 28,178 0.0000 1.0000 98.2062.5 27.962 0.0000 1.0000 98.2063.5 27,962 0.0000 1.0000 98.2064.5 15,894 0.0000 1.0000 98.2065.5 15,894 0.0000 1. 0000 98.2066.5 16.591 0.0000 1.0000 98.2067.5 16,591 0.0000 1.0000 98.2068.5 16,591 0.0000 1.0000 98.20 69.5 965 0.0000 1.0000 98.2070.5 984 0.0000 1.0000 98.20 71. 5 984 0.0000 1.0000 98.2072.5 984 0.0000 1.0000 98.2073.5 1,423 0.0000 1.0000 98.2074.5 1,261 0.0000 i.oooo 98.2075.5 1,261 0.0000 1.0000 98.2076.5 1,295 0.0000 1.0000 98.2077.5 1,295 0.0000 1.0000 98.2078.5 1,295 0.0000 1.0000 98.20 ~i-95 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 137 of 491 IDAHO POWER COMPANY ACCOUNT 350.20 LAD RIGHTS AN EASEMENTS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 1.295 0.0000 1. 0000 98.2080.5 1,295 15 0.0118 0.9882 98.2081.5 582 0.0000 1.0000 97.0482.5 582 0.0000 1. 0000 97.0483.5 582 0.0000 1.0000 97.0484.5 476 0.0000 1.0000 97.0485.5 457 0.0000 1.0000 97.0486.5 457 0.0000 1.0000 97.0487.5 457 0.0000 1.0000 97.0488.5 18 0.0000 1.0000 97.04 89.5 18 0.0000 1.0000 97.0490.5 18 0.0000 1.0000 97.0491.5 97.04 111-96 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 138 of 491 t/ E-~ri::t/ri ri??0 !3i:0.u::H i:~~ ~ ~H?::!30t/u ri t/i:i:::::ri E-E-3:U 00::00.i::EE-t/0 t/ ~ 0 0 ~H 0 ~0l rol!~M H CJE-H S i:00Uuro r: i t: !Z,ZW~¿ 0: UJWU0- :s r; 0. 100 .. ..00NN l. 0-i '" 0I '" '"i.. ..I ~ I ~i .. oeZ G ë2 M l7 0 0:._----¡L(\D.:s /0 V ~ .~~i ./ ~-/L: J / V 8 g o00 o..otD o'To.n g oN o ÐNII\II\l:nS IN3:)l:3d o~,. oc-.. oo,. ~en0: "Íw)-Z w Cl "Ío(! o"' oN 00 ~i-97 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Pag 139 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AN IMPROVEMENTS PLACEMENT BAND 1909-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5n.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 34,075.436 21,596,685 22,412,543 21,420,107 18,723,833 16,825,100 13,497,048 13,302,101 12,408.633 11,378,225 6,711,593 7,019,713 6,488,600 6,115,521 6,383,170 7,686,978 8.353.628 7,474,888 7,637.412 7,808,505 9,223,015 10,237,602 10,433,280 8,913,859 9,496,463 9,590,663 9,090,370 9,111,802 9,044,959 9.442,461 8,168,911 7,952.276 7,939,958 7,771,471 6,973,421 5,672,231 5,354,301 5,873,407 5,683,546 5,097,265 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 74,779 7,463 2,818 169,238 1,500 12,449 698 26,060 19,290 4,369 668 26,215 2,613 20.630 45.398 555 28,116 19,427 8,770 18.919 5,458 13,349 48,443 126 9,906 6.262 9,501 7.335 2,154 16,614 6,743 17,059 111-98 EXPERIENCE BAND 1996-2010 RETMT RATIO 0.0000 0.0000 0.0033 0.0003 0.0000 0.0002 0.0125 0.0001 0.0010 0.0000 0.0000 0.0001 0.0040 0.0032 0.0007 0.0001 0.0031 0.0000 0.0000 0.0003 0.0000 0.0020 0.0044 0.0001 0.0030 0.0020 0.0010 0.0021 0.0006 0.0014 0.0059 0.0000 0.0012 0.0008 0.0014 0.0013 0.0004 0.0028 0.0012 0.0033 SURV RATIO 1.0000 1. 0000 0.9967 0.9997 1.0000 0.9998 0.9875 0.9999 0.9990 1. 0000 1.0000 0.9999 0.9960 0.9968 0.9993 0.9999 0.9969 1.0000 1.0000 0.9997 1.0000 0.9980 0.9956 0.9999 0.9970 0.9980 0.9990 0.9979 0.9994 0.9986 0.9941 1.0000 0.9988 0.9992 0.9986 0.9987 0.9996 0.9972 0.9988 0.9967 PCT SURV BEGIN OF INTERVAL 100.00 100.00 100.00 99.67 99.63 99.63 99.61 98.37 98.35 98.26 98.26 98.26 98.25 97.85 97.54 97.48 97.47 97.16 97.16 97.16 97.13 97.13 96.93 96.51 96 .51 96 .22 96.03 95.93 95.73 95.68 95.54 94.97 94.97 94.85 94.78 94.65 94.53 94.49 94.22 94.11 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 140 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AND IMPROVEMENTS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAND 1909-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS peT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 5,138,146 30,198 0.0059 0.9941 93.7940.5 5,028,715 14,076 0.0028 0.9972 93.24 41. 5 4,840,331 3,439 0.0007 0.9993 92.9842.5 4,832,141 50,051 0.0104 0.9896 92.9243.5 3,965,065 6,318 0.0016 0.9984 91.9544.5 3,888,335 3.527 0.0009 0.9991 91.81 45.5 3,212.642 4.688 0.0015 0.9985 91.7246.5 3,283.577 3.208 0.0010 0.9990 91.5947.5 3,245,902 4.681 0.0014 0.9986 91.5048.5 3.192,890 582 0.0002 0.9998 91.37 49.5 2,849,294 4,234 0.0015 0.9985 91.3550.5 2.076,536 23,313 o .0112 0.9888 91. 22 51.5 1,208,478 8,692 0.0072 0.9928 90.19 52.5 1,190,332 5,013 0.0042 0.9958 89.5453.5 1,161,193 5,003 0.0043 0.99;;7 89.17 54.5 958.124 422 0.0004 0.9996 88.7855.5 881.943 1,361 0.0015 0.9985 88.7456.5 802,984 4,720 0.0059 0.9941 88.6157.5 695,719 632 0.0009 0.9991 88.0858.5 614,670 9.787 0.0159 0.9841 88.00 59.5 434,569 497 0.0011 0.9989 86.60 60.5 365,474 1.087 0.0030 0.9970 86.50 61. 5 204.655 5 0.0000 1. 0000 86.2562.5 134,974 181 0.0013 0.9987 86.2563.5 102.520 614 0.0060 0.9940 86.1364.5 70,625 0.0000 1.0000 85.6165.5 70,797 160 0.0023 0.9977 85.61 66.5 93,167 2 0.0000 1. 0000 85.4267.5 93,174 0.0000 1.0000 85.4268.5 188,413 284 0.0015 0.9985 85.42 69.5 187,850 238 0.0013 0.9987 85.2970.5 181,606 0.0000 1.0000 85.18 71. 5 190,887 0.0000 1.0000 85.1872.5 171,297 2 0.0000 1.0000 85.1873.5 150,559 0.0000 1. 0000 85.1874.5 179,005 0.0000 1.0000 85.1875.5 179.382 0.0000 1.0000 85.1876.5 189.185 0.0000 1.0000 85.1877.5 189,185 483 0.0026 0.9974 85.1878.5 188,702 1,638 0.0087 0.9913 84.96 ~i-99 Exhibit No. 1 Case NO.IPC-E-12-o8 J. Spanos, IPC Page 141 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AND IMPROVEMENTS ORIGINAL LIFE TABLE. CONT. PLACEMENT BAN 1909-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 187,043 0.0000 1.0000 84.2380.5 186,876 1,302 0.0070 0.9930 84.23 81.5 162,553 1,413 0.0087 0.9913 83.6482.5 159,074 0.0000 1. 0000 82.9183.5 63,732 0.0000 1.0000 82.9184.5 63,250 0.0000 1. 0000 82.9185.5 63,250 0.0000 1. 0000 82.9186.5 49,379 0.0000 1. 0000 82.9187.5 42,558 0.0000 1.0000 82.91 88.5 42,558 0.0000 1.0000 82.91 89.5 10,030 0.0000 1.0000 82.9190.5 9,653 0.0000 1.0000 82.91 91. 5 2,461 0.0000 1.0000 82.9192.5 2,461 0.0000 1.0000 82.9193.5 2,461 0.0000 1. 0000 82.91 94.5 2,461 0.0000 1.0000 82.9195.5 2,461 0.0000 1.0000 82.9196.5 2,461 0.0000 1.0000 82.9197.5 2,461 0,0000 1.0000 82.9198.5 2,461 0.0000 1.0000 82.91 99.5 2,461 0.0000 1.0000 82.91100.5 2,461 0.0000 1. 0000 82.91 101.5 82.91 ~i-100 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 142 of 491 (JE-liZ;:li ê5:;ii uHt) i:;:00 ~li ;:HiiZ;::;0 i:0 H t)U E-(Jie0:E-:rli(J E-:s 000ii0:;0 (J0 ~M i:lJ ~i:MH E-H S iez0HU0UHie0:0 r.-'i.. I ~ t-IZZi ~:t I ff t:.~s I LL 0-.! ~ s::loa;INN'I il m! I ~ a:: If i ~ Ii ~o If..~ mo;..$oi-. . 8 o ) 0 1/ ~/ // .=:"vVV/ · 11(!/...- I.: Jr I o0-o00 o¡-o.(C ~o"1 oC'o(' ÐNll\ll\HnS IN38H3d ~i-101 g,. oOJ oi- o~ ena:c:w0)-i. Z wc:c: ooo oM oN o,. 00 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 143 of 491 IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 238,148,505 190,489,148 177,051,284 152,964,058 139,729,786 136,971,967 125,691,775 111.127,016 113,567,438 101.856,089 71,836,472 70,987,520 60.918,969 58,530,490 58,945.584 62,681,841 70,717,221 65,781.065 66,452,744 64,460,243 65.741,331 70.789,611 74,626,362 59,801,833 60,780,201 60,161,760 60,053,880 59,568,770 58,074,463 55,195,866 49,304,430 43,383,739 42,027,896 40,326,561 36,263,649 27,522,003 25,606,975 23,963,602 22,844,416 22.652,651 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 206,474 173,690 507,911 520,741 508,114 533,537 1.177,911 138,726 1,044,540 268,398 590,290 388,883 376,948 228.371 1,298.671 233,092 253,720 1,124,871 160,965 330,957 541.574 666,729 421,227 717,628 1,152,666 686,434 1,505,689 2,567,198 528.491 345,179 433,174 732.658 439,763 315,723 657.515 181,888 396,338 242,183 289,880 470,583 ~i-102 EXPERIENCE BAND 1996-2010 RETMT RATIO 0.0009 0.0009 0.0029 0.0034 0.0036 0.0039 0.0094 0.0012 0.0092 0.0026 0.0082 0.0055 0.0062 0.0039 0.0220 0.0037 0.0036 0.0171 0.0024 0.0051 0.0082 0.0094 0.0056 0.0120 0.0190 0.0114 0.0251 0.0431 0.0091 0.0063 0.0088 0.0169 0.0105 0.0078 0.0181 0.0066 0.0155 0.0101 0.0127 0.0208 SURV RATIO 0.9991 0.9991 0.9971 0.9966 0.9964 0.9961 0.9906 0.9988 0.9908 0.9974 0.9918 o .9945 0.9938 0.9961 0.9780 0.9963 0.9964 0.9829 0.9976 0.9949 0.9918 0.9906 0.9944 0.9880 0.9810 0.9886 0.9749 0.9569 0.9909 0.9937 0.9912 0.9831 0.9895 0.9922 0.9819 0.9934 0.9845 0.9899 0.9873 0.9792 PCT SURV BEGIN OF INTERVAL 100.00 99.91 99.82 99.54 99.20 98.84 98.45 97.53 97.41 96 .51 96.26 95.47 94.94 94.36 93.99 91.92 91.57 91.25 89.69 89.47 89.01 88.28 87.44 86.95 85.91 84.28 83.32 81. 23 77.73 77.02 76.54 75.87 74.58 73.80 73.23 71.90 71.42 70.32 69.61 68.72 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 144 of 491 IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 22.676,331 915.077 0.0404 0.9596 67.3040.5 21.205,615 168,036 0.0079 0.9921 64.5841.5 20,082,455 243,119 0.0121 0.9879 64.0742.5 19,945,174 424,470 0.0213 0.9787 63.2943.5 18,631,744 456.771 0.0245 0.9755 61. 9544.5 17,559.605 193,420 O.OiiO 0.9890 60.4345.5 13,558,996 289,605 0.0214 0.9786 59.7646.5 13,985,204 87,715 0.0063 0.9937 58.4947.5 13,623,404 164,410 0.0121 0.9879 58.1248.5 13,162,695 ll4,672 0.0087 0.9913 57.42 49.5 12,209,417 101,397 0.0083 0.9917 56.9250.5 9,453,087 242,885 0.0257 0.9743 56.44 51. 5 7,779,520 25,021 0.0032 0.9968 54.9952.5 7,678,280 17,208 0.0022 0.9978 54.8253.5 6,068,752 76.164 0.0126 0.9874 54.6954.5 5,242,063 16,064 0.0031 0.9969 54.0155.5 4.276,107 98.192 0.0230 0.9770 53.8456.5 3,976,190 26,916 0.0068 0.9932 52.6157.5 3,235,067 80,125 0.0248 0.9752 52.2558.5 2,455,997 63,827 0.0260 0.9740 50.96 59.5 1,778,354 19,787 O.Olll 0.9889 49.6360.5 1,316,353 51,331 0.0390 0.9610 49.0861.5 463,460 218 0.0005 0.9995 47.1762.5 268.362 414 0.0015 0.9985 47.1463.5 123,158 837 0.0068 0.9932 47.0764.5 21.299 322 0.0151 0.9849 46.7565.5 12.084 0.0000 1.0000 46.0466.5 10,886 0.0000 1.0000 46.0467.5 1,960 0.0000 1.0000 46.0468.5 6,749 104 0.0154 0.9846 46.04 69.5 6,645 244 0.0367 0.9633 45.3370.5 6,404 0.0000 1.0000 43.6771.5 6,404 1,439 0.2247 0.7753 43.6772.5 4,965 106 0.0213 0.9787 33.8673.5 4,913 67 0.0137 0.9863 33.1374.5 5,427 3 0.0005 0.9995 32.6875.5 5,425 4,789 0.8828 O. II 72 32.6776.5 729 0.0000 1.0000 3.8377.5 729 54 0.0739 0.9261 3.8378.5 675 0.0000 1.0000 3.55 ~i-103 Exhibit No. 1 Case No. IPC-E-12-08 ,J.Spanos,IPC Page 145 of 491 IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 675 675 675 93 93 RETIREMENTS DURING AGE INTERVAL 582 ~i-104 EXPERIENCE BAN 1996-2010 93 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 3.55 0.0000 1,0000 3.55 0.8622 0.1378 3.55 0.0000 1.0000 0.49 1.0000 0.49 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 146 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 5 4 . 0 0 T O W E R S A N D F I X T U R E S OR I G I N A L A N S M O O T H S U R V I V O R C U R V E S 10 0 10 .. . _ - - - - _ . _ . . _ - - . 1 9 9 6 - 2 0 1 0 E X P E R I E N C E : ~ I O ~ I ~ I N A L C U R V E · 1 9 4 9 ~ 2 0 1 0 P ~ ~ ~ ! , i E . N T . . . . . " i \ i \ , \ IO W A 6 5 - S i .'- ' \\\\ , i\ ~ 20 40 60 8 0 AG E I N Y E A R S 10 0 12 0 14 0 90 80 ìO i..ooi "Z 6 0 ::~;:(J 5 0 ..Z UJü ff 4 0 a. 30 20 "O ~ Q ~ ~~ l € g ; -i O r Z ; : ~5 0 z -- C J ' 0 o' - . -h - i i - l ~ " 0 ( ' l. ( ' i .. I T ..:bai oo IDAHO POWER COMPANY ACCOUNT 354.00 TOWERS AND FIXTURES ORIGINAL LIFE TABLE PLACEMENT BAND 1949-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 95,218,800 0.0000 1.0000 100.000.5 90,329,297 476 0.0000 1.0000 100.00 1. 5 90,394.749 39,631 0.0004 0.9996 100.002.5 75,314,923 20,000 0.0003 0.9997 99.963.5 51,686,746 16,578 0.0003 0.9997 99.934.5 47,844,704 39,771 0.0008 0.9992 99.905.5 45,409,773 0.0000 1.0000 99.816.5 37,921,801 11,278 0.0003 0.9997 99.817.5 20,063,919 0.0000 1.0000 99.788.5 18,906,512 33,229 0.0018 0.9982 99.78 9.5 8,072,293 15,196 0.0019 0.9981 99.6110.5 7,335,918 0.0000 1.0000 99.4211.5 9,448,468 0.0000 1.0000 99.4212.5 11,889,400 0.0000 1.0000 99.4213.5 12,506,079 0.0000 1.0000 99.42 14.5 25.761,862 0.0000 1.0000 99.4215.5 31,237,865 0.0000 1.0000 99.4216.5 28,788,208 0.0000 1.0000 99.4217.5 28,696,658 0.0000 1. 0000 99.4218.5 28,510,408 0.0000 1.0000 99.42 19.5 29,128,301 0.0000 1.0000 99.4220.5 29,169,572 0.0000 1.0000 99.4221.5 28,989,048 0.0000 1.0000 99.4222.5 36,718,483 0.0000 1.0000 99.4223.5 35,417,588 0.0000 1.0000 99.4224.5 35,419,817 0.0000 1.0000 99.4225.5 35.333.880 0.0000 1.0000 99.4226.5 32,522,692 0.0000 1.0000 99.4227.5 29.941,214 0.0000 1.0000 99.4228.5 30,085,523 27,381 0.0009 0.9991 99.42 29.5 16.553,639 54.650 0.0033 0.9967 99.3330.5 12,952,760 65,682 0.0051 0.9949 99.00 31. 5 12.911,442 0.0000 1.0000 98.5032.5 12,813,939 0.0000 1.0000 98.5033.5 12,813,939 0.0000 1.0000 98.5034.5 12,680,262 0.0000 1.0000 98.5035.5 16,124,880 0.0000 1. 0000 98.5036.5 16,171,189 0.0000 1.0000 98.5037.5 8,609,370 0.0000 1.0000 98.503B.5 8,609,370 0.0000 1.0000 98.50 ~i-106 Exhibit NO.1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 148 of 491 IDAHO POWER COMPANY ACCOUNT 354.00 TOWERS AN FIXTURES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1949-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 8,607,141 8,604,884 8,548,075 8,541,504 7,577,523 7,175,618 4,768,947 4,987.722 4,987,722 4,987,722 4,194,561 723,211 628,514 577,939 577,939 577.939 577,939 577,939 479,794 321,413 294,916 243.138 RETIREMENTS DURING AGE INTERVAL 15,308 ~i-107 EXPERIENCE BAN 1996-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 98.50 0.0000 1.0000 98.50 0.0000 i.oooo 98.50 0.0000 1.0000 98.50 0.0020 0.9980 98.50 0.0000 1.0000 98.30 0.0000 1.0000 98.30 0.0000 1. 0000 98.30 0.0000 1. 0000 98.30 0.0000 1.0000 98.30 0.0000 1. 0000 98.30 0.0000 1.0000 98.30 0.0000 1.0000 98.30 0.0000 1.0000 98.30 0.0000 1.0000 98.30 0.0000 1. 0000 98.30 0.0000 1.0000 98.30 0.0000 1.0000 98.30 0.0000 1. 0000 98.30 0.0000 1.0000 98.30 0.0000 1.0000 98.30 0.0000 1. 0000 98.30 98.30 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 149 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 5 5 . 0 0 P O L E S A N D F I X T U R E S OR I G I N A L A N S M O O T H S U R V I V O R C U R V E S 10 0 90 ~ I .. . . .I ~ OR I G I N A L C U R V E . 1 9 9 6 - 2 0 1 0 E X P E R I E N C E : I 19 1 7 - 2 0 1 0 P L A C E f v l E N T ~ i ,..... .. . .~.. .. . . . \ \ ., _ . IO W A 6 0 - R 2 \ \ ~ i I \ i "" ~- 20 40 60 AG E I N Y E A R S 80 10 0 12 0 80 70 i..o00 e.z 6 0 ::::ex::(J 5 0 I-Z LUU ff 4 0 a. 30 20 10 -0 C o 0 m ~C n g i ~ ai ~ l 1 6 ' ~ Q ) Z ; : c. 5 0 z ~. ! : " ! = .. - " ' ~ "' - 0 c ; co 0 m .. ~ g oo IDAHO POWER COMPANY ACCOUNT 355.00 POLES AND FIXTURES ORIGINAL LIFE TABLE PLACEMENT BAND 1917-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 46.122,227 0.0000 1. 0000 100.000.5 41,646,289 23,267 0.0006 0.9994 100.001.5 41,553,616 39,108 0.0009 0.9991 99.942.5 37.362,578 175,658 0.0047 0.9953 99.853.5 28,719,248 92,223 0.0032 0.9968 99.384.5 28,691.112 304,491 0.0106 0.9894 99.065.5 29.130,361 103,426 0.0036 0.9964 98.016.5 28,307,526 91,382 0.0032 0.9968 97.667.5 27,351,258 64,176 0.0023 0.9977 97.358.5 27,623,913 182,738 0.0066 0.9934 97.12 9.5 27,481,939 41.709 0.0015 0.9985 96.4810.5 28,741,457 56,912 0.0020 0.9980 96.33 11 .5 30,386,587 59,495 0.0020 0.9980 96 .1412.5 32,290,804 63,427 0.0020 0.9980 95.95 13 .5 31.965,121 521,621 0.0163 0.9837 95.76 14 .5 31,581,617 112,348 0.0036 0.9964 94.2015.5 31,799,168 62,271 0.0020 0.9980 93.8616.5 29,711.834 38,870 0.0013 0.9987 93.6817.5 30,633,694 214,826 0.0070 0.9930 93.5618.5 28.610,722 76,230 0.0027 0.9973 92.90 19.5 28,855,187 90.339 0.0031 0.9969 92.6520.5 26,163,662 112,441 0_0043 0.9957 92.36 21. 5 26,774,328 118,005 0.0044 0.9956 91.9722.5 26,715,555 43,716 0.0016 0.9984 91. 5623.5 25,959.572 36,346 0.0014 0.9986 91.4124.5 24,792.294 114,738 0.0046 0.9954 91. 2825.5 22,648,777 100,577 0.0044 0.9956 90.8626.5 20,024,725 87,702 0.0044 0.9956 90.4627.5 17,457,129 90,553 0.0052 0.9948 90.0628.5 17,232,530 83,890 0.0049 0.9951 89.59 29.5 15.580,695 125,344 0.0080 0.9920 89.1630.5 13.130,049 41,786 0.0032 0.9968 88.44 31. 5 13,355.471 58,077 0.0043 0.9957 88.1632.5 12,186,921 51,392 0.0042 0.9958 87.7833.5 11,383,451 121,629 0.0107 0.9893 B7.4134.5 11,784,922 115,204 0.0098 0.9902 86.4735.5 11.489,863 369,566 0.0322 0.9678 85.6336.5 10,698,239 56.323 0.0053 0.9947 82.8737.5 10,801,909 85,653 0.0079 0.9921 82.4438.5 10,749,169 44,564 0.0041 0.9959 81.78 ~i-109 Exhibit No. 1 Case No. IPC-E"12-08 J. Spanos. IPC Page 151 of491 IDAHO POWER COMPANY ACCOUNT 355.00 POLES AND FIXTURES ORIGINAL LIFE TABLE.CONT. PLACEMENT BAND 1917-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 11,285,486 59.256 0.0053 0.9947 81. 4440.5 11,243,045 79,533 0.0071 0.9929 81. 02 41. 5 10,431,423 45,866 0.0044 0.9956 80.4442.5 10,970,632 94,744 0.0086 0.9914 80.0943.5 10,614,392 26,667 0.0025 0.9975 79.4044.5 11,161,134 250,920 0.0225 0.9775 79.2045.5 10.997,518 176,344 0.0160 0.9840 77.42 46.5 10,624,163 179,871 0.0169 0.9831 76.1847.5 9,897,302 163,441 0.0165 0.9835 74. B948.5 9,541,816 114,788 0.0120 0.9880 73.65 49.5 7,379,584 102,329 0.0139 0.9861 72.7650.5 6,745,388 67,409 0.0100 0.9900 71.7651.5 6,597,216 30.210 0.0046 0.9954 71.0452.5 6,154,891 17,195 0.0028 0.9972 70.71 53.5 6.060,847 49.892 0.0082 0.9918 70.5254.5 5,380,421 62,712 0.0117 0.9883 69.9355.5 5,137,498 37.160 0.0072 0.9928 69.1256.5 4,953,230 51,389 0.0104 0.9896 68.6257.5 4,203,164 94,912 0.0226 0.9774 67.9158.5 3.546,333 77,398 0.0218 0.9782 66.37 59.5 933,158 26,210 0.0281 0.9719 64.9360.5 811,950 4,801 0.0059 0.9941 63.10 61. 5 800,144 5.404 O. 0068 0.9932 62.7362.5 701,821 324 0.0005 0.9995 62.3163.5 668,654 935 0.0014 0.9986 62.2864.5 637,370 8,197 0.0129 0.9871 62.1965.5 629,173 3,560 0.0057 0.9943 61.3966.5 121,059 476 0.0039 0.9961 61.04 67.5 117,736 0.0000 1.0000 60.8068.5 101,694 0.0000 1. 0000 60.80 69.5 120 0.0000 1.0000 60.8070.5 120 0.0000 1.0000 60.8071.5 120 0.0000 1.0000 60.8072.5 120 120 1.0000 60.8073.5 74.5 75.5 76.5 77.5 78.5 5.912 0.0000 ~i-110 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 152 of 491 IDAHO POWER COMPANY ACCOUNT 355. 00 POLES AND FIXTURES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1917-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81. 5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91.5 92.5 93.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 5,912 5,912 5,912 5,912 5,912 5.912 5,912 5,912 5.912 5,912 5,912 5,912 5.912 5,912 RETIREMENTS DURING AGE INTERVAL 111-111 EXPERIENCE BAN 1996-2010 RETMT RATIO 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 SURV RATIO peT SURV BEGIN OF INTERVAL Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, ¡PC Page 153 of 491 (IwUH:; W0 (IWo :; ~ B(I P:ii::0 0 ~E-:;U Hii:::;::0 ~0 Zu0 (IU A::: W ~E-~00W0ii::::ii (I0W ~ :; ~0 H 0 ..0 i:z\0 HIJ(9MHii E-0 S0uui: ,i ..j UJ ..!UZ i Z UJj ~:E 10: UJdt5 I ~ 0-00100 INNi ,. \0 \0, ¡ ~ fi' I .. -¡ I .1i W )I ~ I :: Ju ~¡ ..., f Z i..i ~ , I ë2 .\. )V10oe :;/~ ~/// V . -v. IV1/ /i( I i · ¡ o-.-r oN.. 8.. ~(f0:-:w)- :z wo.:or. ~ oN 8 ooocio00oi-o1D olt o"'oCO oN o ÐNll\lAHnS lN38tl3d 11-112 Exhibit No, 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 154 of 491 IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AND DEVICES ORIGINAL LIFE TABLE PLACEMENT BAN 1926-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 94,274,095 0.0000 1.0000 100.000.5 81,357.831 14,832 0.0002 0.9998 100.001.5 79,237,313 58,894 0.0007 0.9993 99.982.5 68,608,499 170,936 0.0025 0.9975 99.913.5 49.968,109 88.667 0.0018 0.9982 99.664.5 48,157,131 182,005 0.0038 0.9962 99.485.5 46,998.093 107,490 0.0023 0.9977 99.116.5 39,832.797 68,591 0.0017 0.9983 98.887.5 35,182.349 241,729 0.0069 0.9931 98.718.5 32,711,715 439,370 0.0134 0.9866 98.03 9.5 21,226.271 64,334 0.0030 0.9970 96.7110.5 20,596,645 33,481 0.0016 0.9984 96.42ii.5 17.643,081 42,086 0.0024 0.9976 96 .2612.5 18,958,610 62,910 0.0033 0.9967 96.0313.5 21,650,266 83,246 0.0038 0.9962 95.7214.5 28,927.067 73,342 0.0025 0.9975 95.3515.5 33,789,412 166,990 0.0049 0.9951 95.1116.5 31,220,042 32,845 0.0011 0.9989 94.6417.5 31,557,571 68,741 0.0022 0.9978 94.5418.5 30,590,474 58,526 0.0019 0.9981 94.33 19.5 32,625,984 52.449 0.0016 0.9984 94.1520.5 31,818,602 82,759 0.0026 0.9974 94.00 21. 5 32.385,867 828,070 0.0256 0.9744 93.7522.5 38,428,451 606,366 0.0158 0.9842 91.3623.5 37,340,087 179,234 0.0048 0.9952 89.9224.5 37,531.984 94,126 0.0025 0.9975 89.4825.5 37,072,495 60,283 0.0016 0.9984 89.2626.5 37.745.747 87,785 0.0023 0.9977 89.1127.5 36.462.999 105,200 0.0029 0.9971 88.9128.5 35,143.067 45,626 0.0013 0.9987 88.65 29.5 28,300,610 137,669 0.0049 0.9951 88.5430.5 24,752,740 100,969 0.0041 0.9959 88.10 31. 5 24,954,795 22,245 0.0009 0.9991 87.7532.5 24,501,327 37,039 0.0015 0.9985 87.6733.5 24,534,549 115,196 0.0047 0.9953 87.5334.5 25,980,429 149,065 0.0057 0.9943 87.1235.5 27,447.295 308,575 0.0112 0.9888 86.6236.5 27,278,821 29.443 0.0011 0.9989 85.6537.5 21,078,591 66.587 0.0032 0.9968 85.5638.5 21,055,446 33.393 0.0016 0.9984 85.29 ~i-113 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 155 of 491 IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AND DEVICES ORIGINAL LIFE TABLE,CONT. PLACEMENT BAND 1926 -2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 21.657.601 14,806 0.0007 0.9993 85.1540.5 21,664.231 37,908 0.0017 0.9983 85.09 41. 5 20,867,240 47.830 0.0023 0.9977 84.9442.5 21,138,069 35.490 0.0017 0.9983 84.7543.5 19,975,375 31,125 0.0016 0.9984 84.61 44.5 20,125,160 105,233 0.0052 0.9948 84.4845.5 17,792,736 121,921 0.0069 0.9931 84.03 46.5 17,628,099 87,036 0.0049 0.9951 83.46 47.5 17,067,581 93,482 0.0055 0.9945 83.05 48.5 16,684,430 57,485 0.0034 0.9966 82.59 49.5 12,285,255 63,860 0.0052 0.9948 82.3150.5 9,007,078 32,386 0.0036 0.9964 81. 88 51. 5 8,288,776 36.664 0.0044 0.9956 81. 5852.5 7.440,352 19,991 0.0027 0.9973 81.2253.5 7,268,831 71.399 0.0098 0.9902 81.01 54.5 6,562,452 46,327 0.0071 0.9929 80.2155.5 6,323,527 11,471 0.0018 0.9982 79.64 56.5 6,227,596 103,083 0.0166 0.9834 79.50 57.5 5,617,707 146,502 0.0261 0.9739 78.18 58.5 4,577,509 139.944 0.0306 0.9694 76.14 59.5 1,148,508 61,573 0.0536 0.9464 73.82 60.5 825,557 4,368 0.0053 0.9947 69.86 61. 5 663,793 1,530 0.0023 0.9977 69.4962.5 661,206 1,057 0.0016 0.9984 69.3363.5 657,637 12,941 0.0197 0.9803 69.22 64.5 529,255 772 0.0015 0.9985 67.8665.5 528.483 59 0.0001 0.9999 67.7666.5 307.042 9,361 0.0305 0.9695 67.75 67.5 296,282 0.0000 1.0000 65.68 68.5 291.689 0.0000 1. 0000 65.68 69.5 28 0.0000 1.0000 65.6870.5 28 0.0000 1.0000 65.68 71. 5 28 0.0000 1.0000 65.6872.5 28 28 1.0000 65.6873.5 ~i-114 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos,lPC Page 156 of 491 (J (J ri H :: H ii ~::u E-ii ~ ~ 0::Hi:::~ ui ii 8 ~::(J ii 0 :iri ii E-:;0000i:0 :E(J00\ ~II ~0 M H E- S Hi:0 z U H U CJ i:Hi:0 ¡il f-,Uz'ZwiW~! ë2 Lf'LU U I~~: ) I~~¡ ~ 2:¡~~ í 0' 'O i r"i '" a.,.. .../,(' I . W 0: i ;:icrLl I ::u 1- I ..VIc:c:,z Si§ ¡ cr 00jo ./ V / V././/'V/ v ,i 1=Ii oo ooi o00 oM oN oor-55 ~o"T ÐNI/\I/\l:nS IN3:Jl:3d oN.. 8.. á5 (/a:.: LU0)0(0 Z W".: o"' oN 00 ~i-115 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 157 of 491 IDAHO POWER COMPANY ACCOUNT 359.00 ROADS AND TRAILS ORIGINAL LIFE TABLE PLACEMENT BAND 1949-1995 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 0.5 230 0.00001.5 230 0.00002.5 230 0.00003.5 230 o .00004.5 14,835 0.00005.5 14.835 0.0000 1.0000 100.006.5 32,525 0.0000 1. 0000 100.007.5 37,009 0.0000 1.0000 100.008.5 37,009 0.0000 1.0000 100.00 9.5 37,009 0.0000 1.0000 100.0010.5 37,009 0.0000 1. 0000 100.0011.5 37.009 0.0000 1.0000 100.0012.5 37,009 1,736 0.0469 0.9531 100.0013.5 35,272 0.0000 1.0000 95.3114.5 35.272 0.0000 1.0000 95.3115.5 35,042 0.0000 1.0000 95.3116.5 35,042 0.0000 1.0000 95.3117.5 35.042 0.0000 1.0000 95.3118.5 35,042 0.0000 1. 0000 95.31 19.5 20,438 0.0000 1.0000 95.3120.5 20,438 0.0000 1.0000 95.31 21. 5 2,748 0.0000 1.0000 95.3122.5 95.3123.5 24.5 25.5 26.5 27.5 28.5 29.5 9 0.000030.5 9 0.000031.5 9 0.000032.5 9 0.000033.5 9 0.000034.5 20,863 0.000035.5 20,863 0.000036.5 20,863 0.000037.5 20,863 0.000038.5 20,863 0.0000 ~i-116 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 158 of 491 IDAHO POWER COMPANY ACCOUNT 359.00 ROADS AN TRAILS ORIGINAL LIFE TABLE. CONT. PLACEMENT BAN 1949-1995 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61. 5 EXPOSURES AT BEGINNING OF AGE INTERVAL 2:4,247 23,023 24,185 24,915 26,914 283,384 283,384 283,534 283,534 283.534 262,680 262,216 262,216 262,216 262,216 260,831 260,056 258,893 258,163 256,165 150 150 RETIREMENTS DURING AGE INTERVAL ~i-117 EXPERIENCE BAN 1996-2010 RETMT RATIO 464 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0018 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 SURV RATIO PCT SURV BEGIN OF INTERVAL Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 159 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 6 1 . 0 0 S T R U C T U R E S A N D I M P R O V E M E N T S OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 90 -= i O R I G I N A L C U R V E . 1 9 9 6 - 2 0 1 0 E X P E R I E N C E : ~, .. . .. _ _ 1 9 0 9 - ? 9 1 0 P L A C E M E N T ~ ~ I .. . .. .~.. . I .'\ .. . \ .\- ~ .. , . , . / l , . . . .. . . i. V Y V M V J ." - . J \ .. ." I \ \ i \ i ~~ "- 20 40 60 AG E I N Y E A R S 80 10 0 12 0 80 ìO i~~00 c.Z 6 0 :;:;0::;C/ 5 0 ..Z LUÜ ff 4 0 a. 30 20 10 1J ~ ( , ~ ~c n g i ~ (1 " C ( 1 6 ' .. Q ) Z ; : 0) Õ 0 z 0" , . 0 o' - . .. - i : ~ ., 1 J ( ' ~ ( ' i ; -"g o o IDAHO POWER COMPANY ACCOUNT 361.00 STRUCTURES AN IMPROVEMENTS ORIGINAL LIFE TABLE PLACEMENT BAND 1909-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS peT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 20,077,221 0.0000 1. 0000 100.000.5 17.606,296 64,635 0.0037 0.9963 100.00 1. 5 15,459,109 5,149 0.0003 0.9997 99.632.5 13,084,271 4,289 0.0003 0.9997 99.603.5 12,272,222 5.458 0.0004 0.9996 99.574.5 12,610,912 20,816 0.0017 0.9983 99.525.5 11,433,103 526 0.0000 1. 0000 99.366.5 10,532,656 4,160 0.0004 0.9996 99.357.5 9,429,329 15,828 0.0017 0.9983 99.318.5 7,486,236 2.522 0.0003 0.9997 99.15 9.5 6,383.188 96 0.0000 1.0000 99.1110.5 6,137,001 4.405 0.0007 0.9993 99.11 ii .5 5,411,385 8,195 0.0015 0.9985 99.0412.5 4,996,787 1,149 0.0002 0.9998 98.89 13.5 4,995,709 13,408 0.0027 0.9973 98.8714.5 4,941,820 3.705 0.0007 0.9993 98.60 15.5 5,004,617 8,421 0.0017 0.9983 98.5316.5 4,842,370 3,362 0.0007 0.9993 98.3617.5 4,829,385 52,456 0.0109 0.9891 98.3018.5 4.686.499 20,188 0.0043 0.9957 97.23 19.5 3,951.973 40,132 0.0102 0.9898 96.8120.5 4,033,305 10,507 0.0026 0.9974 95.83 21. 5 3,975,516 24,196 0.0061 0.9939 95.5822.5 4,177,091 28,077 0.0067 0.9933 94.9923.5 4,299,554 37,012 0.0086 0.9914 94.3624.5 4,161,589 11,010 0.0026 0.9974 93.5425.5 3.980.919 5,334 0.0013 0.9987 93.3026.5 3,826,392 5,498 0.0014 0.9986 93.1727.5 3,631.138 1,783 0.0005 0.9995 93.0428.5 3,430,320 12.117 0.0035 0.9965 92.99 29.5 3,402,065 31,376 0.0092 0.9908 92.6630.5 3,281,503 3,380 0.0010 0.9990 91.8131.5 3.273,743 12,643 0.0039 0.9961 91. 7132.5 2,870,834 9,696 0.0034 0.9966 91. 3633.5 2,644,796 13,113 0.0050 0.9950 91.0534.5 2,358,801 1,901 0.0008 0.9992 90.6035.5 2,114,869 6,901 0.0033 0.9967 90.5336.5 1,927,804 10,506 0.0054 0.9946 90.2337.5 1,661,524 3.137 0.0019 0.9981 89.7438.5 1,540,630 11.520 0.0075 0.9925 89.57 ~i-119 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 161 of 491 IDAHO POWER COMPANY ACCOUNT 361. 00 STRUCTURES AN IMPROVEMENTS ORIGINAL LIFE TABLE. CONT. PLACEMENT BAN 1909-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51. 5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61.5 62.5 63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71. 5 72.5 73.5 74.5 75.5 76.5 77.5 78.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 1,497.008 1,373,135 1,339,209 1,338,131 1,321,708 1.343,032 1,237.871 1,139,285 1,046.291 992,793 959,662 895,138 786,453 754,346 647,383 526,091 483,836 441,897 338,257 277,166 157,286 106,461 68,250 52,522 41,263 30,002 26,028 46,777 46,733 46,568 45,850 42,919 35,210 64.523 68,048 78,457 78,457 98.215 98,215 94,073 RETIREMENTS DURING AGE INTERVAL 12,946 19,972 717 8,599 12,344 27,149 1.542 12,927 14,732 5,283 1,560 17,447 6,567 25,161 10 5,010 16,252 17,294 3,072 4,044 3,578 16 720 3,262 5,449 150 18 202 567 4.142 14,056 ~i-120 EXPERIENCE BAN 1996-2010 RETMT RATIO 0.0086 0.0145 0.0005 0.0064 0.0093 0.0202 0.0012 0.0113 0.0141 0.0053 0.0016 0.0195 0.0084 0.0334 0.0000 0.0095 0.0336 0.0391 0.0091 0.0146 0.0227 0.0002 0.0105 0.0621 0.1321 0.0000 0.0058 0.0004 0.0000 0.0043 20 0.0124 0.0000 0.0000 0.0003 0.0000 0.0000 0.0000 0.0000 0.0422 0.1494 SURV RATIO 0.9914 0.9855 0.9995 0.9936 0.9907 0.9798 0.9988 0.9887 0.9859 0.9947 0.9984 0.9805 0.9916 0.9666 1.0000 0.9905 0.9664 0.9609 0.9909 0.9854 0.9773 0.9998 0.9895 0.9379 0.8679 1.0000 0.9942 0.9996 1.0000 0.9957 0.9876 1.0000 1.0000 0.9997 1.0000 1.0000 1. 0000 1. 0000 0.9578 0.8506 peT SURV BEGIN OF INTERVAL 88.90 88.13 86.85 86.80 86.25 85.44 83.71 83.61 82.66 81.50 81. 06 80.93 79.35 78.69 76.07 76.07 75.34 72.81 69.96 69.33 68.31 66.76 66.75 66.05 61.94 53.76 53.76 53.45 53.43 53.43 53.20 52.54 52.54 52.54 52.53 52.53 52.53 52.53 52.53 50.31 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 162 of 491 IDAHO POWER COMPANY ACCOUNT 361.00 STRUCTURES AND IMPROVEMENTS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1909-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 77,703 0.0000 1.0000 42.7980.5 77,703 15,501 0.1995 0.8005 42.79 81. 5 41,253 3,471 0.0841 0.9159 34.2682.5 37,782 0.0000 1.0000 31.3783.5 37,782 0.0000 1. 0000 31.3784.5 37.782 0.0000 1.0000 31.3785.5 37,782 0.0000 1.0000 31.3786.5 39,452 0.0000 1.0000 31. 3787.5 2,765 0.0000 1.0000 31. 3788.5 2.621 0.0000 1.0000 31.37 89.5 2,536 0.0000 1. 0000 31.3790.5 2,536 0.0000 1. 0000 31.3791.5 1,750 0.0000 i.oooo 31. 3792.5 i.750 0.0000 1.0000 31.3793.5 1,750 0.0000 1.0000 31. 3794.5 1,750 0.0000 1.0000 31. 3795.5 1,750 0.0000 1.0000 31. 3796.5 1,750 0.0000 1.0000 31. 3797.5 1,750 0,0000 1.0000 31. 3798.5 1,750 0.0000 1.0000 31.37 99.5 1,750 0.0000 1.0000 31. 37100.5 1,750 0.0000 1.0000 31.37101.5 31.37 ~i-121 Exhibit No. 1 Case No. IPG-E-12-08 J. Spanos, IPC Page 163 of 491 tif-riz::ri !3~Il UH:: i::;() 0 ~ri ::HIlZ::;E 0 ii0H::U f-ti i:fS :iritif-:;000Il0~0 ti0 ~N ~\DQMHf- ~ S zo HU t'U Hic ii0 r: . IW~Vzzwl~¿ J \ ex u. IWV, a. ::I ~ a. ISS IJ 00iNN i.b -0 0' ..0' 0'.. .. I ·I w /i ~ i ::, u .. i l ~ , ë2 ~/0 c: ../,.......... $:,l i.0 ./... = ://....i. / :/...1/ J ,. /...../;~ I..: ..:l . fI 8.. ocr o00 o,. ou: (Ja:..UJo~If~ UJ CJ.. o.. o(" oN o.. 8 oooNocrgo,.o:.o..g oß ÐNI¡\II\l:nS lN3:)l:3d ~i-122 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 164 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT PLACEMENT BAN 1916-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 120,017.957 120,775,403 107,449,653 95,906,112 91.173,716 91.672,497 86.721,158 81,411,208 71,760,984 62,479,667 54,201.128 48,939,338 41,976,929 36,678,052 35,478,943 34,980,762 33,127.135 33,208,172 31,248,120 29.790,776 27,352,057 25,423,826 25.361,880 25,799,800 26,512,579 26,366,673 25,614,451 25,392.622 26,575,007 26,233,622 25,147,776 23,675,345 22,706,561 20,835,608 17,960,246 15,474,502 13,958,859 13,361,017 12,652.685 11,375,583 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 19,631 83,520 161,022 113,735 245,739 390,049 195,081 316,136 345.771 217,159 917,225 591,924 560,391 179,075 1,249.021 1,112.671 158.079 248,932 811,670 130,822 251,312 157,764 163,246 201,665 348,074 237,661 199.055 188.066 147,693 290,563 238,496 135,529 208,640 285,166 131,872 63,676 187,924 98,498 351,628 92,050 111-123 EXPERIENCE BAN 1996-2010 RETMT RATIO 0.0002 0.0007 0.0015 0.0012 0.0027 0.0043 0.0022 0.0039 0.0048 0.0035 0.0169 0.0121 0.0133 0.0049 0.0352 0.0318 0.0048 0.0075 0.0260 0.0044 0.0092 0.0062 0.0064 0.0078 0.0131 0.0090 0.0078 0.0074 0.0056 0.0111 0.0095 0.0057 0.0092 0.0137 0.0073 0.0041 0.0135 0.0074 0.0278 0.0081 SURV RATIO 0.9998 0.9993 0.9985 0.9988 0.9973 0.9957 0.9978 0.9961 0.9952 0.9965 0.9831 0.9879 0.9867 0.9951 0.9648 0.9682 0.9952 0.9925 0.9740 0.9956 0.9908 0.9938 0.9936 0.9922 0.9869 0.9910 0.9922 0.9926 0.9944 0.9889 0.9905 0.9943 0.9908 0.9863 0.9927 0.9959 0.9865 0.9926 0.9722 0.9919 PCT SURV BEGIN OF INTERVAL 100.00 99.98 99.91 99.76 99.65 99.38 98.96 98.73 98.35 97.88 97.53 95.88 94.72 93.46 93.00 89.73 86.88 86.46 85.81 83.58 83.22 82.45 81.94 81.41 80.78 79.72 79.00 78.38 77.80 77.37 76.51 75.79 75.35 74.66 73.64 73.10 72.80 71.82 71. 29 69.31 Exhibit No. 1 Case No. fPC-E-12-08 J. Spanos, fPC Page 165 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT ORIGINAL LIFE TABLE.CONT. PLACEMENT BAN 1916-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 11,017.372 141.540 0.0128 0.9872 68.7540.5 10,661.439 89,412 0.0084 0.9916 67.8641.5 10,336,631 88.150 0.0085 0.9915 67.2942.5 9,317,128 64,296 0.0069 0.9931 66.7243.5 9,017,244 113,280 0.0126 0.9874 66.2644.5 8.615.855 92,975 0.0108 0.9892 65.4345.5 8,324,903 53,324 0.0064 0.9936 64.7246.5 7.984,475 206,120 0.0258 0.9742 64.3147.5 7.633,516 138.429 0.0181 0.9819 62.6548.5 7,300,659 41,002 0.0056 0.9944 61.51 49.5 6.720.988 125,343 0.0186 0.9814 61.1750.5 6,163,195 56,818 0.0092 0.9908 60.0351.5 5,476,274 256,240 0.0468 0.9532 59.4752.5 5,018,842 18,651 0.0037 0.9963 56.6953.5 4,742,775 69,063 0.0146 0.9854 56.4854.5 4,184,792 67,779 0.0162 0.9838 55.6655.5 3,795,041 25,884 0.0068 0.9932 54.7556.5 3.528,272 233,174 0.0661 0.9339 54.3857.5 2,354,151 9,597 0,0041 0.9959 50.7958.5 2,031,328 10,147 0.0050 0.9950 50.58 59.5 1,448,403 258,001 0.1781 0.8219 50.3360.5 913,274 229 0.0003 0.9997 41.3661.5 612,084 344 0.0006 0.9994 41.3562.5 410,123 1,018 0.0025 0.9975 41.3363.5 320,387 6,002 0.0187 0.9813 41.2364.5 262,807 6.537 0.0249 0.9751 40.4565.5 237,341 8,515 0.0359 0.9641 39.4566.5 223,340 117 0.0005 0.9995 38.0367.5 190,926 125 0.0007 0.9993 38.0168.5 151.169 30 0.0002 0.9998 37.99 69.5 112,404 47 0.0004 0.9996 37.9870.5 110.957 0.0000 1.0000 37.9671.5 87,150 0.0000 1. 0000 37.9672.5 89,087 0.0000 1. 0000 37.9673.5 65,095 0.0000 1.0000 37.9674.5 23,127 22 0.0010 0.9990 37.9675.5 23,053 0.0000 1.0000 37.9376.5 31,729 0.0000 1.0000 37.9377.5 29,702 462 0.0156 0.9844 37.9378.5 29,240 0.0000 1.0000 37.34 ~i-124 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos, ~PC Page 166 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1916-2010 AGE AT BEGIN OF INTERVAL 79.5 80.5 81.5 82.5 83.5 84.5 85.5 86.5 87.5 88.5 89.5 90.5 91.5 92.5 93.5 94.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 22,333 20,835 19,858 14,579 14,575 14,575 14,575 14,435 8,738 8,738 8.738 8,738 1,992 l,992 1,992 RETIREMENTS DURING AGE INTERVAL 1,949 ~i-125 EXPERIENCE BAN 1996-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 37.34 0.0000 1. 0000 37.34 0.0981 0.9019 37.34 0.0000 L.OOOO 33.670.0000 l.OOOO 33.67 0.0000 L.OOOO 33.67 0.0000 1.0000 33.67 0.0000 1. 0000 33.67 0.0000 1.0000 33.670.0000 L.OOOO 33.67 0.0000 1.0000 33.670.0000 1.0000 33.67 0.0000 1.0000 33.67 0.0000 1.0000 33.67 0.0000 1.0000 33.67 33.67 Exhibit No.1 Case No. IPC-E-12-08 J. Spanos. fPC Page 167 of 491 u. Ci f5 u.f-Ci:x ~Hri P::: ~ CJ P:~0 ~u.~ P:Hi:Ci ~:::;P:0 ::u 0 u.f- P:_ ::Ci u. f-:;Ci 00,. 0i:o :E0i: u. ~0 ~A 0H "1 ~\D ZMH f-0 §HP:0 0 Uu.: í.w l- I ~ t5i!:¿: i ex UJi UJ uI ~:5: UJ n.íoo¡,. .. I ~ ;; ¡ .z J,ì g: ~ l~.~ I ~¡ U; .. II' ~1. ¡ § .... Lf.. Cti-a-a ~oi- J.....:! V1/j/ ~ IJ VI /v oo o.-oen o00 oI' ÐNll\ll\èlnS lN38èl3d o(, ~i-126 oU)o("o~o('.J 8.. oen oc. (Jcrq:Wo?-\I~ Wøq: o.. o(" oN o., oo Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 168 of 491 IDAHO POWER COMPANY ACCOUNT 364.00 POLES, TOWERS AN FIXTURES PLACEMENT BAND 1926-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 105,671,680 105,061,069 105,307,341 104,290,414 100,311,593 102,493,287 102,964.897 100,087,610 98,421,847 94.136.103 B7,813,325 84,225,747 83,079,638 86,562,194 76,405,092 71,989,889 67,649,947 67,148,352 63.569,218 58,830,654 54,989,082 54,424.023 53,936,442 53.704,775 52,478,336 50,744,567 47,950,957 45,227,202 42,497,010 38.826,550 35,640,776 31,236.861 27,930,958 25,074,736 22,217,510 19,665,027 17,074,159 14,415.912 12,570,491 11.237,438 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 168.264 555,030 943,517 730,390 786,822 772,202 712,463 976,042 748,681 575,815 696.731 573.924 393.970 437.139 343,918 306,115 329,150 358,729 367,369 628,971 724,462 501,412 389,113 440,082 434,681 332,227 389.950 450,865 508,097 325,352 317,674 190,820 141,923 125,577 110,162 98,500 83.811 63,584 57,280 48,425 111-127 EXPERIENCE BAND 1997-2010 RETMT RATIO 0.0016 0.0053 0.0090 0.0070 0.0078 0.0075 0.0069 0.0098 0.0076 0.0061 0.0079 0.0068 0.0047 0.0051 0.0045 0.0043 0.0049 0.0053 0.0058 0.0107 0.0132 0.0092 0.0072 0.0082 0.0083 0.0065 0.0081 0.0100 0.0120 0.0084 0.0089 0.0061 0.0051 0.0050 0.0050 0.0050 0.0049 0.0044 0.0046 0.0043 SURV RATIO 0.9984 0.9947 0.9910 0.9930 0.9922 0.9925 0.9931 0.9902 0.9924 0.9939 0.9921 0.9932 0.9953 0.9949 0.9955 0.9957 0.9951 0.9947 0.9942 0.9893 0.9868 0.9908 0.9928 0.9918 0.9917 0.9935 0.9919 0.9900 0.9880 0.9916 0.9911 0.9939 0.9949 0.9950 0.9950 0.9950 0.9951 0.9956 0.9954 o . 9957 PCT SURV BEGIN OF INTERVAL 100.00 99.84 99.31 98.42 97.73 96.97 96.24 95.57 94.64 93.92 93.34 92.60 91.97 91. 54 91.07 90.66 90.28 89.84 89.36 88.84 87.89 86.74 85.94 85.32 84.62 83.92 83.37 82.69 81.86 80.89 80.21 79.49 79.01 78.61 78.21 77.82 77 .44 77.06 76.72 76.37 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 169 of 491 IDAHO POWER COMPANY ACCOUNT 364.00 POLES, TOWERS AND FIXTURES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1926-2010 AGE AT BEGIN OF INTERVAL 39.5 40.5 41. 5 42.5 43.5 44.5 45.5 46.5 47.5 48.5 49.5 50.5 51.5 52.5 53.5 54.5 55.5 56.5 57.5 58.5 59.5 60.5 61.5 62.5 63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71.5 72.5 73.5 74.5 75.5 76.5 77.5 78.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 10,184,425 9,344,617 9,057,188 8,557,865 7,923,053 7,291,540 6,677.273 6,385,418 6.081,853 5,691,786 5.337,178 5.017,727 4,654,321 4,140,239 3,770,695 3,414,792 3,263,000 2,961,114 2,620.481 2,313.658 1,978,205 1,514,815 1,203,089 886,235 615,638 460.874 334,395 310,228 307,829 295,154 233,359 166,251 129,627 103,107 79,347 74,735 61,756 57,601 55,913 52,496 RETIREMENTS DURING AGE INTERVAL 40,254 40,577 37.949 38,527 82,542 94,797 109,447 60,654 58,214 50.976 40,544 32,365 54,084 21,283 40,829 21.656 11,442 10,587 7.219 7,179 7,565 5,329 3,864 1.572 1,182 590 1,718 1,491 782 620 688 531 884 384 113 71 135 281 398 194 ~i-128 EXPERIENCE BAN 1997-2010 RETMT RATIO 0.0040 0.0043 0.0042 0.0045 0.0104 0.0130 0.0164 0.0095 0.0096 0.0090 0.0076 0.0065 0.0116 0.0051 0.0108 0.0063 0.0035 0.0036 0.0028 0.0031 0.0038 0.0035 0.0032 0.0018 0.0019 0.0013 0.0051 0.0048 0.0025 0.0021 0.0029 0.0032 0.0068 0.0037 0.0014 0.0009 0.0022 0.0049 0.0071 0.0037 SURV RATIO 0.9960 0.9957 0.9958 0.9955 0.9896 0.9870 0.9836 0.9905 0.9904 0.9910 0.9924 0.9935 0.9884 0.9949 0.9892 0.9937 0.9965 0.9964 0.9972 0.9969 0.9962 0.9965 0.9968 0.9982 0.9981 0.9987 0.9949 0.9952 0.9975 0.9979 0.9971 0.9968 0.9932 0.9963 0.9986 0.9991 0.9978 0.9951 0.9929 0.9963 PCT SURV BEGIN OF INTERVAL 76.04 75.74 75.41 75. 09 74.75 73.97 73.01 71.82 71.13 70.45 69.82 69.29 68.84 68.04 67.69 66.96 66.54 66.30 66.07 65.88 65.68 65.43 65.20 64.99 64.87 64.75 64.67 64.33 64.03 63.86 63.73 63.54 63.34 62.91 62.67 62.58 62.52 62.39 62. 08 61.64 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos. IPC Page 170 of 491 IDAHO POWER COMPANY ACCOUNT 364.00 POLES, TOWERS AN FIXTURES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAND 1926 -2010 EXPERIENCE BAND 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 45,705 54 0.0012 0.9988 61.4180.5 31,886 6 0.0002 0.9998 61.34 81. 5 12,423 0.0000 1.0000 61.3382.5 2,935 0.0000 1.0000 61.3383.5 283 0.0000 1.0000 61. 3384.5 61.33 ~i-129 Exhibit No. 1 Case No. IPC-E-12-08 J. spanos, IPC Page 171 of 491 CIIïUH;;Iïc:CIIï ~ ;;p:::u CIp:p:?;0 §;~f-U HP.::;;:t § p:0 ::u CIUp::: Iï ~f-3:00Iï0i::::tp:CI0Iï ~;;c:0 ~QH 0 ~0 l!H1.c:1"H p:f-0 130uu~ W t-Uzzw !: :Ecr wWU ~ :5wa-00 /.. ..00NN. ," (J(J ..(J m Lf.. ...0W Cf /:;oc::Lfu-q /..0:c:z !â .Soc~/a------ V :/ :/:/.../--.:./ V: ~ V/.- /oo o--o.,o(''o ogo00Rotool! ÐNll\ll\ClnS IN38tl3d oo.. g o00 or- o'- (ja:0:w0)0Il ~ w CJ-t o"T g oN o.. oo ~i-130 Exhibit No. 1 Case NO.IPC-E-12-08 J. Spanos, IPC Page 172 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES ORIGINAL LIFE TABLE PLACEMENT BAND 1919-2010 EXPERIENCE BAN 1997 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 57,003,258 241,260 0.0042 0.9958 100.000.5 59,320,354 695,665 0.0117 0.9883 99.581.5 56,402,706 304.549 0.0054 0.9946 98.412.5 47,540,817 547,508 0.0115 0.9885 97.883.5 41,313.469 304,674 0.0074 0.9926 96.754.5 40,898,284 453.540 0.0111 0.9889 96.045.5 40,946,968 603,741 0.0147 0.9853 94.976.5 39,033.347 641.844 0.0164 0.9836 93.577.5 39,079,106 408,234 0.0104 0.9896 92.038.5 37,011,572 427,152 0.0115 0.9885 91.07 9.5 33,670,192 364.434 0.0108 0.9892 90.0210.5 32,499,972 475,376 0.0146 0.9854 89.051l.5 33,111,744 456,741 0.0138 0.9862 87.7412.5 34,293,902 328,711 0.0096 0.9904 86.5313.5 33,805,517 316,381 0.0094 0.9906 85.7014.5 33,484,281 249,863 0.0075 0.9925 84.9015.5 31,904,520 405.329 0.0127 0.9873 84.2716.5 32,754,426 305,693 0.0093 0.9907 83.2017.5 32,561,905 238,659 0.0073 0.9927 82.4218.5 31,842,288 324.365 0.0102 0.9898 81.82 19.5 30,638,204 505,942 0.0165 0.9835 80.9820.5 30,929,621 291,498 0.0094 0.9906 79.6521.5 31,346.560 414,071 0.0132 0.9868 78.9022.5 31.901,212 367,160 0.0115 0.9885 77.8523.5 31,447,940 369,516 0.0118 0.9882 76.9624.5 31.002,037 276,164 0.0089 0.9911 76.0525.5 29.708,061 288,326 0.0097 0.9903 75.3826.5 28,839,536 340,914 0.0118 0.9882 74.6427.5 27,475,672 442.093 0.0161 0.9839 73.7628.5 25,552,704 321,530 0.0126 0.9874 72.58 29.5 24,637,614 200.156 0.0081 0.9919 71.6630.5 23,136,376 272,556 0.0118 0.9882 71.08 31. 5 20,827,596 93,082 0.0045 0.9955 70.2432.5 18,911,012 84,757 0.0045 0.9955 69.9333.5 17,290,468 83,725 0.0048 0.9952 69.6134.5 15,860,833 70.402 0.0044 0.9956 69.2835.5 13,966,875 55,881 0.0040 0.9960 68.9736.5 12,051,132 60,309 0.0050 0.9950 68.6937.5 11,053,432 46.758 0.0042 0.9958 68.3538.5 10,175,127 42,010 0.0041 0.9959 68.06 ~i-131 Exhibit No. 1 Case No. IPC.E-12-08 J. Spanos, IPC Page 173 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 9,355,425 33,090 0.0035 0.9965 67.78 40.5 8,676,055 37,352 0.0043 0.9957 67.54 41.5 8.376,864 33.580 0.0040 0.9960 67.25 42.5 7,887,768 28,682 0.0036 0.9964 66.98 43.5 7.202,028 59.203 0.0082 0.9918 66.74 44.5 6,476,648 71,239 0.0110 0.9890 66.19 45.5 5.882,686 107,958 0.0184 0.9816 65.46 46.5 5.644.531 68.763 0.0122 0.9878 64.26 47.5 5,377,015 48,425 0.0090 0.9910 63.48 48.5 5,076,205 21.911 0.0043 0.9957 62.90 49.5 4,772.134 24,349 0.0051 0.9949 62.63 50.5 4,530,323 21,034 0.0046 0.9954 62.31 51.5 4,191,427 54,742 0.0131 0.9869 62.02 52.5 3,749,837 26,939 0.0072 0.9928 61. 21 53.5 3,409,837 40.381 0.0118 0.9882 60.77 54.5 3,053,559 17,872 0.0059 0.9941 60.05 55.5 2,877,546 7.647 0.0027 0.9973 59.70 56.5 2,658.767 8,326 0.0031 0.9969 59.54 57.5 2,361,372 6,939 0.0029 0.9971 59.36 58.5 2,081,038 6.607 0.0032 0.9968 59.18 59.5 1,793,690 6,266 0.0035 0.9965 59.00 60.5 1,409,610 5,113 0.0036 0.9964 58.79 61. 5 1,099.286 2.264 0.0021 0.9979 58.58 62.5 800.178 1.411 0.0018 0.9982 58.46 63.5 590,862 1,444 0.0024 0.9976 58.35 64.5 475,370 1,125 0.0024 0.9976 58.21 65.5 426,096 1,867 0.0044 0.9956 58.07 66.5 420,319 2,009 0.0048 0.9952 57.82 67.5 415,326 884 0.0021 0.9979 57.54 68.5 394,986 748 0.0019 0.9981 57.42 69.5 323,792 870 0.0027 0.9973 57.31 70.5 227,609 928 0.0041 0.9959 57.16 71.5 187.568 995 0.0053 0.9947 56..92 72.5 155,452 376 0.0024 0.9976 56.62 73.5 126,609 259 0.0020 0.9980 56.48 74.5 107,879 177 0.0016 0.9984 56.37 75.5 94,471 206 0.0022 0.9978 56.28 76.5 91,272 417 0.0046 0.9954 56.15 77.5 86,671 538 0.0062 0.9938 55.90 78.5 81,843 210 0.0026 0.9974 55.55 111-132 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 174 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 71,689 137 0.0019 0.9981 55.4180.5 52,062 103 0.0020 0.9980 55.30 81. 5 26,761 18 0.0007 0.9993 55.1982.5 16,674 30 0.0018 0.9982 55.1683.5 10,595 38 0.0036 0.9964 55.0684.5 7,246 12 0.0017 0.9983 54.8685.5 6.647 14 0.0021 0.9979 54.7686.5 5,046 27 0.0053 0.9947 54.6587.5 3,008 4 0.0014 0.9986 54.3688.5 2,367 0.0000 1.0000 54.28 89.5 1,620 0.0000 1.0000 54.2890.5 222 0.0000 1. 0000 54.28 91. 5 54.28 ~i-133 Exhibit No. 1 case No. IPC-E-12-08 J. Spanos, IPC Page 175 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 6 6 . 0 0 U N D E R G R O U N D C O N D U I T OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 -. . ~ .~ ~ ts i . 1 9 9 7 - 2 0 1 0 E X P E R I E N C E : i O R I G I N A L C U R V E · 1 9 4 7 - 2 0 1 0 P L A C E M E N T 90 80 70 ø 60 Z :: i :: -' (( ~ :l 50 CJ..ZWÜ(( 40 W0- 30 .i ¡ W A 6 0 - R 2 20 10 i: ~ ( ) m ~c n Ð l š - CD ' t C D ë ' .. Q ) z ; : "" 5 0 z 0) e n ' 0 g, : " " õ : ' li i : ( ) CD ( ) . .. r : ..g o o 20 40 60 AG E I N Y E A R S 80 10 0 12 0 IDAHO POWER COMPANY ACCOUNT 366.00 UNDERGROUND CONDUIT ORIGINAL LIFE TABLE PLACEMENT BAN 1947-2010 EXPERIENCE BAND 1997 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 31.823,867 51,694 0.0016 0.9984 100.000.5 33,397,769 143,360 0.0043 0.9957 99.84 1. 5 33,871,499 250,303 0.0074 0.9926 99.412.5 34,056,493 88,498 0.0026 0.9974 98.673.5 32,944,545 98,208 0.0030 0.9970 98.424.5 32,446,330 69,288 0.0021 0.9979 98.125.5 31,216,472 68,167 0.0022 0.9978 97.926.5 28,300,944 88,925 0.0031 0.9969 97.707.5 25,654,337 46,298 0.0018 0.9982 97.398.5 22,764,615 41,046 0.0018 0.9982 97.22 9.5 20,027,583 30,655 0.0015 0.9985 97.0410.5 17.585,453 32,102 0.0018 0.9982 96.89 11. 5 15,471,303 20,614 0.0013 0.9987 96.7212.5 13,960,661 20,464 0.0015 0.9985 96.59 13 .5 12,662,075 12.482 0.0010 0.9990 96.4514.5 11,389,532 15.173 0.0013 0.9987 96.3515.5 10,325.363 16,376 0.0016 0.9984 96.2216.5 9.272,910 16,203 0.0017 0.9983 96.0717.5 8,224,406 20,898 0,0025 0.9975 95.9018.5 7,240,873 19,311 0.0027 0.9973 95.66 19.5 6,561,079 29,872 0.0046 0.9954 95.4020.5 6,154,956 17,302 0.0028 0.9972 94.97 21. 5 5,689.048 21,874 0.0038 0.9962 94.7022.5 5.291,688 19,706 0.0037 0.9963 94.3423.5 5,334,590 14,391 0.0027 0.9973 93.9924.5 5,218,397 17.019 0.0033 0.9967 93.7325.5 5.107.839 17,169 0.0034 0.9966 93.4326.5 5.114,513 25,116 0.0049 0.9951 93.1127.5 4,637,904 18,028 0.0039 0.9961 92.6628.5 4,325.144 11,349 0.0026 0.9974 92.30 29.5 3,861,415 8,909 0.0023 0.9977 92.0530.5 3,276.664 7,116 0.0022 0.9978 91.84 31. 5 2,788,524 6,272 0.0022 0.9978 91.6432.5 2,271.896 4,786 0.0021 0.9979 91.4433.5 1.931,673 4,636 0.0024 0.9976 91.2434.5 1,672,036 4,875 0.0029 0.9971 91.0335.5 1,544,464 3,482 0.0023 0.9977 90.7636.5 1,346,141 1,752 0.0013 0.9987 90.5637.5 972,103 1,334 0.0014 0.9986 90.4438.5 598,033 398 0.0007 0.9993 90.31 ~i-135 Exhibit No. 1 Case No. IPC-E-12-Qa J. Spanos, IPC Page 177 of 491 IDAHO POWER COMPANY ACCOUNT 366.00 UNERGROUN CONDUIT ORIGINAL LIFE TABLE.CONT. PLACEMENT BAND 1947-2010 EXPERIENCE BAND 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 429,415 329 0.0008 0.9992 90.2540.5 324,051 502 0.0015 0.9985 90.18 41. 5 204,802 551 0.0027 0.9973 90.0442.5 179,224 186 0.0010 0.9990 89.8043.5 144,953 4 0.0000 1.0000 89.7144.5 88,847 0 0.0000 1.0000 89.7145.5 26,300 0 0.0000 1.0000 89.7146.5 5,824 15 0.0026 0.9974 89.7047.5 6,804 2 0.0003 0.9997 89.4748.5 6,798 307 0.0452 0.9548 89.45 49.5 7,977 21 0.0026 0.9974 85.4150.5 6,641 17 0.0025 0.9975 85.19 51. 5 6 1565 20 0.0030 0.9970 84.97 52.5 6,545 2 0.0004 0.9996 84.7253.5 6 1531 20 0.0031 0.9969 84.69 54.5 6.492 3 0.0004 0.9996 84.43 55.5 6.454 13 0.0021 0.9979 84.3956.5 6,163 11 0.0017 0.9983 84.22 57.5 6,059 25 0.0041 0.9959 84.0758.5 5 ,707 844 0.1479 0.8521 83.73 59.5 3,300 0.0000 1. 0000 71.3460.5 2 1066 Ii 466 0.7097 0.2903 71.34 61. 5 0 0.0000 1.0000 20.7162.5 0 0.0000 1.0000 20.7163.5 20.71 ~i-136 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 178 of 491 (Ir,UH~i:Q (I ~ g: (I B~o:: E- ~ ~ g ~ ~ ~ g8 u (I &5 § ~:s 0o ~ 0 p. Cl :ão ~ (I~ i: e Q § ~H ..o ~o H r- Cl\0 Hl' ~ E- souui: u. !-UZ'Z UJ'~ ¿: a: UJUJ U0. :5 ~ Cl00.. ..00NN rZ J, (1 'Ti: i:..... UJ;;a:::u..~Z..~Na:ci0;.":)-:s0.. -V .'/./. i I .V. l . .V: I /' J /v .tJ 8-oOJ o00 or-oIJ oi.t o..?ao""o ÐNIJ\IJ\èjnS IN3:)èj3d oN,. oo oQO (/a:c:w0)-i. Z Wc:c: o"1 oN oo 111-137 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 179 of 491 IDAHO POWER COMPANY ACCOUNT 367.00 UNERGROUND CONDUCTORS AN DEVICES PLACEMENT BAN 1946 - 2 010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14 .5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 107,022,469 113,291.892 115,634.872 118,121,690 117,131.389 116,665,428 115,577,074 109,996,284 105,914,085 99,593,838 94,288,915 89,053,634 87,333.610 85,256,919 73,430,421 63,111.106 53,792.592 46,277,873 38,791,478 33,665,196 28,956,488 26,322,584 23,403,782 21,992,640 21,186,898 19,833.849 18,130,471 18.016,860 16,549,060 15,691.407 13,948,900 10,195,815 8,445,455 6,416,177 5.259,454 4,317,830 3,756,160 2,900.796 1,961,847 1,311,889 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 149,690 720,072 757,054 620.844 485,040 467,772 492,549 399,654 521,552 317,702 414,145 342,351 332,823 198,953 267,053 142.177 257,281 179,785 234,800 190,143 223,837 124,247 109.867 148,120 147,107 73,885 107.106 245,212 161,753 136,057 112,650 85.091 61,290 48,291 44,372 34,946 18.181 9,493 9,298 4,134 ~i-138 EXPERIENCE BAN 1997 -2010 RETMT RATIO 0.0014 0.0064 0.0065 0.0053 0.0041 0.0040 0.0043 0.0036 0.0049 0.0032 0.0044 0.0038 0.0038 0.0023 0.0036 0.0023 0.0048 0.0039 0.0061 0.0056 0.0077 0.0047 0.0047 0.0067 0.0069 0.0037 0.0059 0.0136 0.0098 0.0087 0.0081 0.0083 0.0073 0.0075 0.0084 0.0081 0.0048 0.0033 0.0047 0.0032 SURV RATIO 0.9986 0.9936 0.9935 0.9947 0.9959 0.9960 0.9957 0.9964 0.9951 0.9968 0.9956 0.9962 0.9962 0.9977 0.9964 0.9977 0.9952 0.9961 0.9939 0.9944 0.9923 0.9953 0.9953 0.9933 0.9931 0.9963 0.9941 0.9864 0.9902 0.9913 0.9919 0.9917 0.9927 0.9925 0.9916 0.9919 0.9952 0.9967 0.9953 0.9968 PCT SURV BEGIN OF INTERVAL 100.00 99.86 99.23 98.58 98.06 97.65 97.26 96.85 96.49 96.02 95.71 95.29 94.93 94.56 94.34 94.00 93.79 93.34 92.98 92.41 91.89 91.18 90.75 90.33 89.72 89.09 88.76 88.24 87.04 86.19 85.44 84.75 84.04 83.43 82.80 82.11 81. 44 81.05 80.78 80.40 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 180 of 491 IDAHO POWER COMPANY ACCOUNT 367.00 UNERGROUND CONDUCTORS AND DEVICES ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1946-2010 EXPERIENCE BAN 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 891.465 2,661 0.0030 0.9970 80.1540.5 652.196 2,105 0.0032 0.9968 79.91 41. 5 388.272 2,516 0.0065 0.9935 79.6542.5 259,834 539 0.0021 0.9979 79.1343.5 203,831 349 0.0017 0.9983 78.9744.5 142,252 5,842 0.0411 0.9589 78.8345.5 64,856 459 0.0071 0.9929 75.5946.5 58,741 5,289 0.0900 0.9100 75.0647.5 48.758 1,356 0.0278 0.9722 68.3048.5 47,931 4.483 0.0935 0.9065 66.40 49.5 55,860 5,070 0.0908 0.9092 60.1950.5 49,085 301 0.0061 0.9939 54.73 51. 5 48,571 648 0.0133 0.9867 54.3952.5 47,912 2,973 0.0621 0.9379 53.6753.5 44,340 2,294 0.0517 0.9483 50.3454.5 41,838 60 0.0014 0.9986 47.7355.5 40,182 1,676 0.0417 0.9583 47.6756.5 37,997 264 0.0069 0.9931 45.6857.5 35,403 579 0.0164 0.9836 45.3658.5 33,123 44 0.0013 0.9987 44.62 59.5 27 1432 994 0.0362 0.9638 44.5660.5 18.276 13,464 0.7367 0.2633 42.94 61. 5 355 131 0.3697 0.6303 11.3162.5 7.13 ~i-139 Exhibit No. 1 case No. IPC-E-12..8 J. Spanos, IPC Page 181 of 491 i~.io ~ 6 C ););a::)(j 5 C I-ZWü ff 4 0 0. "t t o ( ' m ~C n g i ~ (1 ' 0 ( 1 6 ' .. Q ) Z ; : CD 5 0 z I\ C I ' 0 O' - . -h - ' 1 ~ . .. " t ( ' co ( ' , ~ r r ..:bCD ID A H O P O W E R C O M P A N Y AC C O U N T 3 6 8 . 0 0 L I N E T R A S F O R M E R S OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 SlC , i . , - - - " - - " - - - ~ , . . _ . _ ~ ~ - - ~ - - _ . _ , , , , , - , ~ . ~ - ~ , ~ - , . . . , . . _ - .. : O R I G I N A L C U R V E . 1 9 9 7 - 2 0 1 0 E X P E R I E N C E l - ) - . . . . . r - - 1 9 2 0 - 2 0 1 0 P L A C E I ' i E N T .~-. I I ~'\ .. . i \. . . . \. . . . I. I )' v V A 3 5 - Rl -. . . I . . . '\ .. II . . .. I I '\ i \ i ~'" ~ 80 70 30 20 10 o o 10 20 30 40 5 0 6 0 AG E I N Y E A R S 70 90 10 0 80 IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS PLACEMENT BAND 1920-2010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21. 5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 263,945,588 258.223,344 237,093,678 212,672.008 181,954,967 164,559.535 146,479,150 135,056,699 138,055,948 136,284,481 135,181,418 130,423,479 127,749,403 127,912,266 123,184,354 117,280,809 113,603.568 112,018.805 108,186.372 103,469.771 100,352,605 93,551.081 87,057,494 84,014,208 80,818,101 76,125,136 71,775.426 64,206,698 57,831.030 52.140,493 45,544,291 42,037,063 36,492,362 31,320.386 26,440,360 22,656,383 19,346.557 15.956,438 13,336,050 11,468,523 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 783,018 6.834,932 2,480,833 1.561,842 1,382,759 1,089,703 1,798,341 1,769,474 1,701,311 1.328,706 1,227,161 1,678,167 1,052,020 1,055,407 1.126.222 1,002.577 1,023.531 1.087,473 1,482,229 1,728,432 1.928,021 2,065,175 1,564,333 1,318,073 2,032,328 1,721,410 1,328,899 1,314,988 1,309,921 1,065,095 824,033 544,965 471,209 387,785 340,181 287,529 211.364 156,693 132,179 104,840 111-141 EXPERIENCE BAND 1997-2010 RETMT RATIO 0.0030 0.0265 0.0105 0.0073 0.0076 0.0066 0.0123 0.0131 0.0123 0.0097 0.0091 0.0129 0.0082 0.0083 0.0091 0.0085 0.0090 0.0097 0.0137 0.0167 o . 0192 0.0221 0.0180 0.0157 0.0251 0.0226 0.0185 0.0205 0.0227 0.0204 0.0181 0.0130 0.0129 0.0124 0.0129 0.0127 0.0109 0.0098 0.0099 0.0091 SURV RATIO 0.9970 0.9735 0.9895 0.9927 0.9924 0.9934 0.9877 0.9869 0.9877 0.9903 0.9909 0.9871 0.9918 0.9917 0.9909 0.9915 0.9910 0.9903 0.9863 0.9833 0.9808 0.9779 0.9820 0.9843 0.9749 0.9774 0.9815 0.9795 0.9773 0.9796 0.9819 0.9870 0.9871 0.9876 0.9871 0.9873 0.9891 0.9902 0.9901 0.9909 PCT SURV BEGIN OF INTERVAL 100.00 99.70 97.06 96.05 95.34 94.62 93.99 92.84 91. 62 90.49 89.61 88.80 87.65 86.93 86.22 85.43 84.70 83.93 83.12 81.98 80.61 79.06 77.32 75.93 74.74 72.86 71.21 69.89 68.46 66.91 65.54 64.36 63.52 62.70 61.93 61.13 60.35 59.69 59.11 58.52 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 183 of 491 IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1920-2010 EXPERIENCE BAN 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 10,255,655 115,048 0.0112 0.9888 57.9940.5 8,822,256 92,682 0.0105 0.9895 57.34 41. 5 7,853,515 148,288 0.0189 0.9811 56.7342.5 6,842,985 64,182 0.0094 0.9906 55.6643.5 6,657,286 47.934 0.0072 0.9928 55.1444.5 5,806,003 79,232 0.0136 0.9864 54.7445.5 5,180,061 150,235 0.0290 0.9710 54.0046.5 4,649,221 114,722 0.0247 0.9753 52.4347.5 4,171,326 169,872 0.0407 0.9593 51.1448.5 3,684,020 71,486 0.0194 0.9806 49.05 49.5 3,046,565 86,950 0.0285 0.9715 48.1050.5 2,525,829 36,555 0.0145 0.9855 46.73 51. 5 2.160,360 32,012 0.0148 0.9852 46.0552.5 1,827,072 34,740 0.0190 0.9810 45.3753.5 1,448,377 14,724 0.0102 0.9898 44.5154.5 1,206,182 6,189 0.0051 0.9949 44.0655.5 1,041,886 10,741 0.0103 0.9897 43.8356.5 868.607 11,038 0.0127 0.9873 43.3857.5 683.274 4,013 0.0059 0.9941 42.8358.5 578,958 53,845 0.0930 0.9070 42.57 59.5 330,273 36,218 0.1097 0.8903 38.6260.5 185,400 45,501 0.2454 0.7546 34.38 61.5 111,826 641 0,0057 0.9943 25.9462.5 66,194 521 0.0079 0.9921 25.7963.5 47.003 304 0.0065 0.9935 25.5964.5 31,257 94 0.0030 0.9970 25.4365.5 18,719 0.0000 1.0000 25.3566.5 14,608 6,219 0.4257 0.5743 25.3567.5 7,504 5,143 0.6853 0.3147 14.5668.5 678 180 0,2658 0.7342 4.58 69.5 497 497 1.0000 3.3670.5 71.5 72.5 73.5 74.5 75.5 76.5 1,920 0.000077.5 1,920 0.000078.5 1,920 1,920 1.0000 79.5 ~i-142 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 184 of 491 t/ ~t/ri i: ~ 8 0 ~ ¡; t:E ri i:o t/ ::U t/i: 0 :iri 0 Eo :; 0) 0o 0i: 1. :Ef' t/ ~ f- Q Q 13 ~H 0 t3 ~ i: :z Ht9Hi:o ¡ ..I W I-iUz1Zw I ~ :E'a: wIwuI ~:5iWo.100i i- ~100,NNi~N:i C! N'i~~ i . I UJ~:::: i U.. ~N.. I t:0:ë2 i 0 a ),'-"! c:50 / ./V. .-V ,,....V~./i.V../..../..-./ iV ;/ Ll- i:i oo~o.:n o00 or,c,.c od'o""o('~or.o ÐNl/\l/\èlns IN3:ièl3d 8,. ~ o00 or- o(J (/ix;:w0)-to Z W C)c( o": g oN o,. 0° 111-143 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 185 of 491 IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES ORIGINAL LIFE TABLE PLACEMENT BAN 1922-2010 EXPERIENCE BAND 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 30,278,378 81.624 0.0027 0.9973 100.00 0.5 31,105,188 291,611 0.0094 0.9906 99.73 1. 5 31,641,609 127.399 0.0040 0.9960 98.802.5 31,592,201 124,464 0.0039 0.9961 98.403.5 30,348,737 122,114 0.0040 0.9960 98.014.5 28,533,704 162,988 0.0057 0.9943 97.625.5 27,504,992 176.299 0.0064 0.9936 97.06 '6.5 25,461,199 221,999 0.0087 0.9913 96 .447.5 24,484,964 213,385 0.0087 0.9913 95.608.5 22,841.167 109,242 0.0048 0.9952 94.76 9.5 21.183,206 107,637 0.0051 0.9949 94.3110.5 19,524,250 95,138 0.0049 0.9951 93.831l.5 17,370,012 66,316 0.0038 0.9962 93.3712.5 18,342.384 44,604 0.0024 0.9976 93.02 13 .5 18,484,842 57,263 0.0031 0.9969 92.7914.5 17,447,295 77.656 0.0045 0.9955 92.5015.5 16,097,372 59.556 0.0037 0.9963 92.0916.5 15,734,853 82,743 0.0053 0.9947 91.7517.5 15,131,256 54,914 0.0036 0.9964 91.2718.5 15,029,083 81.524 0.0054 0.9946 90.94 19.5 14,310,490 108,325 0.0076 0.9924 90.4420.5 14,770,504 96,749 0.0066 0.9934 89.76 21. 5 14,857.457 121.324 0.0082 0.9918 89.1722.5 13.838,418 91.119 0.0066 0.9934 88.4423.5 13,575,943 65,726 0.0048 0.9952 87.8624.5 12,998,853 79,340 0.0061 0.9939 87.4325.5 12,284,554 66,415 0.0054 0.9946 86.9026.5 11.517.179 100,032 0.0087 0.9913 86.4327.5 10,687,909 65,936 0.0062 0.9938 85.6828.5 9,874,196 51,541 0.0052 0.9948 85.15 29.5 9,313,961 53,689 0.0058 0.9942 84.7130.5 7.893,612 62,228 0.0079 0.9921 84.22 31. 5 6,650,599 27,410 0.0041 0.9959 83.5632.5 5,627,279 34,937 0.0062 0.9938 83.2133.5 4,717,050 16,583 0.0035 0.9965 82.6934.5 3,870,495 14,238 0.0037 0.9963 82.4035.5 2.628,482 10,639 0.0040 0.9960 82.1036.5 2,409,726 7,690 0.0032 0.9968 81.7737.5 1,770,026 4,633 0.0026 0.9974 81.5138.5 1,252,001 2,938 0.0023 0.9977 81.29 ~i-144 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos, IPC Page 186 of 491 IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1922 -2010 EXPERIENCE BAN 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 867,280 1,654 0.0019 0.9981 81.1040.5 598,797 1,172 0.0020 0.9980 80.9541.5 454,012 88B 0.0020 0.9980 80.7942.5 337.596 672 0.0020 0.9980 80.6343.5 255,874 2,078 0.0081 0.9919 80.4744.5 189.561 17,189 0.0907 0.9093 79.8245.5 125,180 7,138 0.0570 0.9430 72 .5846.5 87,609 5,587 0.0638 0.9362 68.4447.5 58,175 4,938 0.0849 0.9151 64.0848.5 34,331 1,705 0.0497 0.9503 58.64 49.5 21.396 4,134 0.1932 0.8068 55.7350.5 10,084 1,117 0.1108 0.8892 44.96 51. 5 3,930 6 0.0015 0.9985 39.9852.5 2,338 0.0000 1.0000 39.9253.5 741 0.0000 1.0000 39.9254.5 387 333 0.8623 0.1377 39.9255.5 5.5056.5 57.5 58.5 59.5 60.5 61.5 62.5 63.5 64.5 65.5 66.5 67.5 68.5 69.5 70.5 71. 5 72.5 73.5 74.5 18 0.000075.5 18 0.000076.5 18 18 i.oooo77.5 ~i-145 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 187 of 491 H ~ z g i:i: i: ;: i: g; ~ ui: i:~ :E 0~ l ;: ~ M ~ U ~ i: i: M :ri: f- ~ ~ ~ o N i: ~ ~ ~H M ¿ ~Z o H r- C1M ~ i: 0 §ouu-: r------l .. I tj I-'ZZi UJ W ¡ .. :Eo:W!WU l~~¡100! .. .-100 /iNN I . ," o- I g: ~I o- o-I . i w ;::.Iac I ::-i .U i ..).i "'i Z Zi!. i S20:'J . ,0 ~ .v. s .~. .././..../ . ./.i L / ,( ~./ ./.. /-..o~oOJ oN oocoRo:0 :î s;g ÐNII\I/\è:OS lN38è:3d oui ui." o.. uiM oM C/0: oe UJ tn )0N :z UJ"ct ~ U',. o,. ir oo ~i-146 Exhibit No. 1 Case No. IPC-E-12-08 J. Spano,IPC Page 188 of 491 IDAHO POWER COMPANY ACCOUNTS 370.0, 370.2 AN 370.3 - METERS - NON AMI PLACEMENT BAND 1941 - 2 010 AGE AT BEGIN OF INTERVAL 0.0 0.5 1. 5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31. 5 32.5 33.5 34.5 35.5 36.5 37.5 38.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 46,837,881 46,935,612 44,853,961 42,785,189 39,352.536 30,361,143 27,322,362 24,B88,055 23,149,731 21,735,653 20,862,081 19,384,893 19,482,250 17,402,264 16,308,507 14,455,260 13,135,641 14,430,283 13,637,269 12,403,202 11,610,385 10,638,173 10,407.534 10,119,868 9,879,008 9,653,085 9,475.398 8,841.259 8,246,756 7,860,679 7,341,874 5,711,796 4,916.117 4,083,646 3,272,560 2,748.976 2,296,646 1,878,235 1,528,277 1,251.858 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 729,983 1,571,737 777.475 660,858 702,491 695.460 1.877,089 1,656,019 414,855 297,228 391,545 517,429 508,355 417,455 249,883 278.188 297.642 306.710 923,508 480,143 542,199 193,215 250.373 174,179 80,122 83,382 145,721 117.251 110,849 52,652 150,127 26,783 23,041 20,190 15,145 15,765 12,084 31,875 6,474 5,667 ~i-147 EXPERIENCE BAN 1997-2010 RETMT RATIO 0.0156 0.0335 0.0173 0.0154 0.0179 0.0229 0.0687 0.0665 0.0179 0.0137 0.0188 0.0267 0.0261 0.0240 0.0153 0.0192 0.0227 0.0213 0.0677 0.0387 0.0467 0.0182 0.0241 0.0172 0.0081 0.0086 0.0154 0.0133 0.0134 0.0067 0.0204 0.0047 0.0047 0.0049 0.0046 0.0057 0.0053 0.0170 0.0042 0.0045 SURV RATIO 0.9844 0.9665 0.9827 0.9846 0.9821 0.9771 0.9313 0.9335 0.9821 0.9863 0.9812 0.9733 0.9739 0.9760 0.9847 0.9808 0.9773 0.9787 0.9323 0.9613 0.9533 0.9818 0.9759 0.9828 0.9919 0.9914 0.9846 0.9867 0.9866 0.9933 0.9796 0.9953 0.9953 0.9951 0.9954 0.9943 0.9947 0.9830 0.9958 0.9955 PCT SURV BEGIN OF INTERVAL 100.00 98.44 95.14 93.50 92.05 90.41 88.34 82.27 76.79 75.42 74.39 72.99 71.04 69.19 67.53 66.49 65.21 63.74 62.38 58.16 55.91 53.30 52.33 51.07 50.19 49.78 49.35 48.59 47.95 47.30 46.99 46.03 45.81 45.60 45.37 45.16 44.90 44.67 43.91 43.72 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 189 of 491 IDAHO POWER COMPANY ACCOUNTS 370. O.370.2 AN 370.3 -METERS -NON AMI ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1941-2010 EXPERIENCE BAN 1997 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 1,088,051 5,169 0.0048 0.9952 43.5240.5 943.412 4,201 0.0045 0.9955 43.32 41. 5 838,506 3,737 0.0045 0.9955 43.1242.5 752.839 2,994 0.0040 0.9960 42.9343.5 661,328 2,289 0.0035 0.9965 42.7644.5 560,957 5,540 0.0099 0.9901 42.6145.5 470,228 3.184 0.0068 0.9932 42.1946.5 399.738 3,565 0.0089 0.9911 41.9147.5 335,576 2,561 0.0076 0.9924 41. 5348.5 281,856 2,897 0.0103 0.9897 41.22 49.5 234,655 2,749 0.0117 0.9883 40.79 50.5 195,245 1,182 0.0061 0.9939 40.31 51. 5 161,230 949 0.0059 0.9941 40.0752.5 133,224 2,037 0.0153 0.9847 39.8353.5 111,422 1,007 0.0090 0.9910 39.2354.5 95.143 268 0.0028 0.9972 38.8755.5 80,064 353 0.0044 0.9956 38.7656.5 67,049 2,125 0.0317 0.9683 38.5957.5 55.188 82 0.0015 0.9985 37.3758.5 48.486 114 0.0024 0.9976 37.31 59.5 36,739 82 0.0022 0.9978 37.2260.5 25,946 31 0.0012 0.9988 37.1461.5 19,271 18 0.0010 0.9990 37.1062.5 10,734 0.0000 1.0000 37.0663.5 4.643 376 0.0810 0.9190 37.0664.5 1,745 56 0.0323 0.9677 34.0665.5 251 126 0.5021 0.4979 32.9666.5 125 125 1.0000 16.4167.5 ~i-148 Exhibit No. 1 Case No. IPC.E.12.08 J. Spanos, IPC Page 190 of 491 trIï:; H p: ~::u p:;:0 ~tr :; p:Hi:Iï :;:s H p:0 ::u Iï tr:s p::iIï0E-:;00rl0i:0 :str0r- ~ f"Q Q E- ~ H § Ho ~u zU H ~ CJH p:0 -~--- u. i-u :z:z w~ :£L(ciwwU N~:s :l.Lu 0. s;: ~ iI.00'.,NN:,l'." V ~0000NN ~.0UJ::I- ci::u.. ~!:ci0- - ,.//V/~/~/V ( , oo oOJ o CO f2 oIf C"'o'"oN oo!C ÐNII\I/\~ns lN3J~3d IiM oM L(N oN enci ocw::z w C)0:L(.. o.. n oo 11-149 Exhibit No. 1 Case No. IPC-E-12-Qa J. Spanos, IPC Page 191 of 491 IDAHO POWER COMPANY ACCOUNT 370.10 METERS - AMI ORIGINAL LIFE TABLE PLACEMENT BAND 2004 -2010 EXPERIENCE BAN 2007 - 2 010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 34,805,656 4,997 0.0001 0.9999 100.000.5 17.561,618 142 0.0000 1.0000 99.991.5 70,591 0.0000 1.0000 99.982.5 99.98 '3.5 4,731,730 151,319 0.03204.5 4,580,411 0.00005.5 4,580,411 169 0.0000 6.5 ~i-150 Exhibit No. 1 Cas No. IPC-E-12-08 J. Spanos, IPC Page 192 of 491 (Jz0H (JE-.:Iï:;..ii ~::u (J P:::Z 0 ~ H :; U Hp.H ;::E .:ii0E-::U ..(J ii g ::lï E-:s 0 0E-0 0 0p.:::E p.(J0 ~0 ~0 rlH rl .. i-~M H E-CJ S HP:0 0 Uu.: r-_.'., i u. l- I U:z,:z w;i!: :iJ~w,¡WU' ! ~:S:i w 0.ls~100INNI ' ,r- in10'0' )10\0-.. .. I .¡ I w ' ¡5è :Vi:: I u ¡ -J-:, ! z /~8 , l ~ !0 /, ~~~ .~~/. -' .V ~~/tffN.. /.:??0~. ~ c5 a;oo'"or-o~o('or.-.o'C otD ONIAI/u:lns lN3~tl3d oN '".. (l.. "' N.. C/ Q:c:UJ0)-..~ W CJc: 00 (l "' N 00 ~i-151 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 193 of 491 IDAHO POWER COMPANY ACCOUNT 371.10 PHOTOVOLTAIC INSTALLATIONS PLACEMENT BAN 1995-2008 AGE AT BEGIN OF INTERVAL 0.0 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 EXPOSURES AT BEGINNING OF AGE INTERVAL 53.258 255.375 400,030 383,185 383,185 383,185 383,185 359,318 359,318 359,318 359,318 325,910 325,910 132,963 36,098 23,923 ORIGINAL LIFE TABLE RETIREMENTS DURING AGE INTERVAL 23,867 33,408 189,941 96,865 601 15,474 ~i-152 EXPERIENCE BAN 1997-2010 PCT SURV RETMT SURV BEGIN OF RATIO RATIO INTERVAL 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0000 1.0000 100.00 0.0623 0.9377 100.00 0.0000 1. 0000 93.77 0.0000 1.0000 93.77 0.0000 1.0000 93.77 0.0930 0.9070 93.77 0.0000 1.0000 85.05 0.5828 0.4172 85.05 0.7285 0.2715 35.48 0.0167 0.9833 9.63 0.6468 0.3532 9.47 3.35 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 194 of 491 eni:enH :Ei:pii:eni:pi t:i:P::E ::0 CJf-en P:~::0 ~U t:Hi:~t::E 0 g;0 CJ ~en0P:H :ii:f-f-:E i:00..0i:..:si:en0f- ~en Q~~Q HH ..0 i:N ZHr-0r-HrvP:0f- 130 CJ CJi: ¡ Ii ~'U ; Z UJ~¿ 0: UJWU~Swa.00.. ..00 c¡ r;r- lX (J 0.0' 0'.. ... ¡L. !:;0:i ::U..c:z G õ:0 i '" ...0: i'"..~S0 J.. /V V.~/I-. i V../.~" V I :5 o(,7:-oo(X oi-Co~D oif)o":g or-.. ÐNIAIJ\:lnS IN3:)~3d o(J oLO o"t enæ.:worMZ W C).: oN o.. 00 111-153 Exhibit No. 1 Case No. IPC-E.12.08 J. Spanos, IPC Page 195 of 491 IDAHO POWER COMPANY ACCOUNT 371.20 INSTALLATION ON CUSTOMER PREMISES ORIGINAL LIFE TABLE PLACEMENT BAN 1968-2010 EXPERIENCE BAN 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 1,630.469 8,389 0.0051 0.9949 100.00 0.5 1,561,306 28,476 0.0182 0.9818 99.49 1. 5 1.466,367 34.728 0.0237 0.9763 97.672.5 1,411,898 26,312 0.0186 0.9814 95.36 3.5 2,490.271 27,273 0.0110 0.9890 93.584.5 2.394,858 32,842 0.0137 0.9863 92.565.5 2,297,580 30.021 0.0131 0.9869 91.296.5 2.178,359 40,810 0.0187 0.9813 90.097.5 2,097,692 58,542 0.0279 0.9721 88.418.5 1.931,190 56,721 0.0294 0.9706 85.94 9.5 1,795,793 43,890 0.0244 0.9756 83.41 10.5 1,648,893 21.957 0.0133 0.9867 81.38 11 .5 1,629,956 30,553 0.0187 0.9813 80.29 12.5 1.599,575 35,225 0.0220 0.9780 78.79 13.5 1,403,999 41,028 0.0292 0.9708 77.0514.5 1,274,184 39,995 0.0314 0.9686 74.80 15.5 1,160,259 22,995 0.0198 0.9802 72.45 16.5 1,060,183 9,791 0.0092 0.9908 71. 0217.5 19,336 1,768 0.0914 0.9086 70.3618.5 17,728 4,643 0.2619 0.7381 63.93 19.5 12.863 3,251 0.2528 0.7472 47.1920.5 9,877 1,233 0.1248 0.8752 35.26 21. 5 8,644 0.0000 1.0000 30.8622.5 9,979 639 0.0641 0.9359 30.8623.5 9,340 0.0000 1.0000 28.8824.5 9,340 1,335 0.1430 0.8570 28.8825.5 7,211 1,131 0.1568 0.8432 24.7526.5 6,213 72 0.0117 0.9883 20.87 27.5 5,994 200 0.0333 0.9667 20.63 28.5 6,458 133 0.0206 0.9794 19.94 29.5 5,608 0.0000 1. 0000 19.5330.5 664 664 1.0000 19.53 31. 5 ~i-154 Exhibit No. 1 Case NO.IPC-E-12-Q8 J. Spanos. IPC Page 196 of 491 ui :£Iï£-ui;:ui H ui ~Iï::Z ~CJHui U ~ ~ ~0::Hi:CJ :::£Z ~0 HU£-ui ~:i :iIïCJ£-:;H 00H0i:£-:£ Iï ui0 ~ Iï Q~~£-Q uiH H0~ 0l ZH r'CJHr-0:r'0 £- S0uu~ oil re I-'ZZIwWì ë2 ~ ) i LU U1~5, UJ 0- 100.. ..100iNN! . i'! " 't . ì$~'I.. ..,Vi ·I LU ;;Vi ~i U ¿I ;; i ~iY , l? ~/-0:0 t-..V/...v.../..v. ./... ...1 1/ 1 . oin ~ CJ Q:c:w0)-("z wøc: oN o.. 8 ooa;15 or~o'"fi o.,oM o,,¡o~ ÐNII\II\è10S lN3Jèl3d ~i-155 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanös, IPC Page 197 of 491 IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AN SIGNAL SYSTEMS ORIGINAL LIFE TABLE PLACEMENT BAND 1954 -2010 EXPERIENCE BAN 1997-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 1,670,019 2,288 0.0014 0.9986 100.000.5 1,700,258 13,368 0.0079 0.9921 99.86 1. 5 1,679,349 9,482 0.0056 0.9944 99.082.5 1,676,409 19,457 0.0116 0.9884 98.523.5 1,683,973 14,511 0.0086 0.9914 97.374.5 1,641,865 17,304 0.0105 0.9895 96.545.5 1,591,038 23,859 0.0150 0.9850 95.526.5 1,498,481 30.647 0.0205 0.9795 94.097.5 1,509,997 25.763 0.0171 0.9829 92.168.5 1,423,042 26,262 0.0185 0.9815 90.59 9.5 1,402,410 24,781 0.0177 0.9823 88.9210.5 1,797,309 24,423 0.0136 0.9864 87.35 11.5 2,184,005 36,545 0.0167 0.9833 86.1612.5 2,526.574 34,729 0.0137 0.9863 84.72 13 .5 2,365,920 23,374 0.0099 0.9901 83.5514.5 2,286,698 17,565 0.0077 0.9923 82.7315.5 2.203.090 17,523 0.0080 0.9920 82.0916.5 2.183,984 18,069 0.0083 0.9917 81.4417.5 2,082,084 26,904 0.0129 0.9871 80.77 18.5 2,071,256 29,124 0.0141 0.9859 79.72 19.5 2,089,871 21.474 0.0103 0.9897 78.6020.5 2,115,782 43,496 0.0206 0.9794 77.7921.5 2,083,740 25,319 0.0122 0.9878 76.1922.5 2,064,812 29,936 0.0145 0.9855 75.2723.5 1,945,273 20,844 0.0107 0.9893 74.1824.5 1,435,728 27,599 0.0192 0.9808 73.3825.5 1,056,210 14,528 0.0138 0.9862 71.9726.5 713,313 10.032 0.0141 0.9859 70.9827.5 619,052 11,887 0.0192 0.9808 69.9828.5 556,054 3,172 0.0057 0.9943 68.64 29.5 561,429 6,727 0.0120 0.9880 68.2530.5 542.284 2,319 0.0043 0.9957 67.43 31. 5 511,206 2.540 0.0050 0.9950 67.1432.5 442,662 2,460 0.0056 0.9944 66.8133.5 381,327 1.646 0.0043 0.9957 66.4434.5 332,563 1,679 0.0050 0.9950 66.1535.5 283,140 1,335 0.0047 0.9953 65.8236.5 236,524 910 0.0038 0.9962 65.5137.5 203,208 739 0.0036 0.9964 65.2538.5 173,178 591 0.0034 0.9966 65.02 ~i-156 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 198 of 491 IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AND SIGNAL SYSTEMS ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1954-2010 EXPERIENCE BAN 1997 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 145,455 619 0.0043 0.9957 64.7940.5 130,206 577 0.0044 0.9956 64.52 41. 5 116.511 705 0.0061 0.9939 64.2342.5 99,594 319 0.0032 0.9968 63.8443.5 83,182 462 0.0056 0.9944 63.6444.5 64,661 508 0.0079 0.9921 63.2945.5 50,734 458 0.0090 0.9910 62.7946.5 41,010 3,649 0.0890 0.9110 62.2247.5 29,298 914 0.0312 0.9688 56.6948.5 23.984 238 0.0099 0.9901 54.92 49.5 15.378 1,802 0.1172 0.8828 54.3750.5 8,734 196 0.0224 0.9776 48.0051.5 5,219 14 0.0027 0.9973 46.9252.5 3,054 4 0.0011 0.9989 46.8053.5 1,757 36 0.0205 0.9795 46.7554.5 896 0.0000 i.oooo 45.7955.5 187 0.0000 1.0000 45.7956.5 45.79 ~i-157 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 199 of 491 CJ~H0..H:Jiia:ru (Ilï~ (I i: Eo :J ~U lï i:~::0 ~ lï ~~0 HP,i:~::ii i:0 :::JuH(I i:0 :rlïEo:;~000ii(I ::0 lï (I ~ ~ 0 o Eo ~H g ..i:.iEo~(I H CJrlHi:rl 000\l' Eo 50uu.i ~: 11J~ Zw ~ :20: w I~~ wa.00_..,00 I i; i;'0 ..0' 0' I 0' 0-.. ..,. i uJ;,Lf0::JiU 0, i ..U1 l ~i I G 0 i ã:0 I 0 .. - --.-oe , ~¡- / / i . : oQ) oro or- oi. o (/It 0: -:w::z w0"., Ct g oN o g oooeno00o1-g o"toin o('~o ÐNll\ll\èlnS lN3:)èl3d ~i-158 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 200 of 491 IDAHO POWER COMPANY ACCOUNT 390.11 STRUCTURES AN IMPROVEMENTS - CHQ BUILDING ORIGINAL LIFE TABLE PLACEMENT BAN 1991-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 4,074,522 0.0000 1.0000 100.000.5 3,733.331 0.0000 1.0000 100.00 1. 5 3,674,597 0.0000 i.oooo 100.002.5 3,568,338 0.0000 1.0000 100.00 . 3.5 3,485,171 0.0000 1.0000 100.004.5 25,921,911 0.0000 1.0000 100.005.5 25,419,499 7,181 0.0003 0.9997 100.006.5 24.629.469 12,000 0.0005 0.9995 99.977.5 24,150,752 39,355 0.0016 0.9984 99.928.5 24,082,229 0.0000 1.0000 99.76 9.5 23,921,741 10.647 0.0004 0.9996 99.7610.5 23,885,260 38.525 0.0016 0.9984 99.7211.5 23,647,411 2,000 0.0001 0.9999 99.5512.5 23,528,558 62,550 0.0027 0.9973 99.5513.5 23,289,853 25,000 0.0011 0.9989 99.2814.5 23,234.537 69,000 0.0030 0.9970 99.1815.5 23,162.658 3,346 .0.0001 0.9999 98.8816.5 22,972,788 361,180 0.0157 0.9843 98.8717.5 22,585,534 1,130 0.0001 0.9999 97.3118.5 22,067,893 312,394 0.0142 0.9858 97.31 19.5 95.93 ~i-159 Exhibit No. 1 Case NO.IPC-E-12-08 J. Spanos, IPC Page 201 of 491 0ZH0..H:: CO Ql::U 0ZH §u.i:..::U:x iši:u ll~u.0 ~E-:: Z Hi::::E i: iš0:Ei:u ::u. ll 0 ::i:ll E-i:~::000i:H :E 0 o u. ~~ 0 0 u. ~H i:..i:.:::zE-U H ::0llHi:E-0u. f\rl 0'"M E- S0uu.: oN., ) 0 /~// vV./ · v/i J / II Y~ ~l i I-~~i~æ! W ¿: I ã: UJwu1~5i W Cl1001¡8ÕNN I J: d,0' .. I ~ e: I ;i ~I U ! ~¡ ~ , í3 ! ë;o,--- u 5 ull. ~ :S ~oQO (J exc;w0;:to Z w C)c; o." oN oo oooenoexor-oco ÐNIAIAè:lS .lN3:Jl:3d ~i-160 oL!1 o"'oM o!,-,o~ Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 202 of 491 IDAHO POWER COMPANY ACCOUNT 390.12 STRUCTURES AN IMPROVEMENTS -EXCLUDING CHQ BUILDING ORIGINAL LIFE TABLE PLACEMENT BAN 1919-2010 EXPERIENCE BAN 1996 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 22,422,752 0.0000 1.0000 100.000.5 21,720,174 0.0000 1. 0000 100.00 1. 5 21.450,826 2,020 0.0001 0.9999 100. 002.5 19,380,823 16,900 O. 0009 0.9991 99.993.5 17,555,720 89,780 0.0051 0.9949 99.904.5 16,976,600 9/017 0.0005 0.9995 99.395.5 13/960/666 5/241 O. 0004 0.9996 99.346.5 12/799/548 64/417 0.0050 0.9950 99.307.5 12/804/845 16,632 0.0013 0.9987 98.808.5 12.774/928 9/318 0.0007 0.9993 98.67 9.5 11,626,424 114.163 0.0098 0.9902 98.6010.5 15/240,407 25/894 0.0017 0.9983 97.6311.5 13/973,929 4/152 O. 0003 0.9997 97.4712.5 16/982/051 62 i 006 0.0037 0.9963 97.4413.5 17/178/798 55/372 0.0032 0.9968 97.0814.5 17/369/533 4.403 0.0003 0.9997 96.7715.5 19/435.967 80 1814 0.0042 0.9958 96.7516.5 15/380,631 311 124 0.0020 0.9980 96.3417.5 15/581/636 61/276 0.0039 0.9961 96.1518.5 14/241/020 381/607 0.0268 0.9732 95.77 19.5 13,820/614 310/219 0.0224 0.9776 93.2020.5 13/248/033 159.969 0.0121 0.9879 91.11 21. 5 13/266/714 81288 0.0006 0.9994 90.0122.5 11/814.809 57 1182 0.0048 0.9952 89.9623.5 11/684/405 148/911 0.0127 0.9873 89.5224.5 11.283,228 188/883 0.0167 0.9833 88.3825.5 7/144,861 272,453 0.0381 0.9619 86.9026.5 6,325/030 59,770 0.0094 0.9906 83.5927.5 3/335,403 85,955 0.0258 0.9742 82.8028.5 2/209/859 14.800 0.0067 0.9933 80.66 29.5 1/982.527 6/953 0.0035 0.9965 80.1230.5 1/470/465 7 1886 0.0054 0.9946 79.84 31. 5 1/656,742 1/500 0.0009 0.9991 79.4132.5 1/292.026 22 1591 0.0175 0.9825 79.3433.5 1/237.534 0.0000 1.0000 77.9534.5 1/037.189 1,670 0.0016 0.9984 77.9535.5 1,056/740 0.0000 1.0000 77.8336.5 832 1043 2,811 0.0034 0.9966 77.8337.5 911,508 765 0.0008 0.9992 77.5738.5 936,354 665 0.0007 0.9993 77.50 ~i-161 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 203 of 491 IDAHO POWER COMPANY ACCOUNT 390.12 STRUCTURES AN IMPROVEMENTS -EXCLUDING CHQ BUILDING ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 934,239 151 0.0002 0.9998 77.4540.5 932,854 0.0000 1.0000 77.43 41. 5 1,039,090 208 0.0002 0.9998 77.4342.5 1,008,762 1,592 0.0016 0.9984 77.4243.5 991,275 6,388 0.0064 0.9936 77.30 44.5 1.009,094 2,692 0.0027 0.9973 76.8045.5 800,635 800 0.0010 0.9990 76.59 46.5 515,295 0.0000 1.0000 76.52 47.5 508,653 596 0.0012 0.9988 76.5248.5 443.426 0.0000 1.0000 76.43 49.5 427,367 346 0.0008 0.9992 76.43 50.5 388,871 3.298 0.0085 0.9915 76.36 51. 5 373,145 0.0000 1. 0000 75.7252.5 268,112 0.0000 1.0000 75.72 53.5 238,182 0.0000 1.0000 75.72 54.5 222.428 0.0000 1.0000 75.72 55.5 226,886 0.0000 1.0000 75.72 56.5 206,986 0.0000 1. 0000 75.7257.5 196,277 3,963 0'.0202 0.9798 75.72 58.5 192,424 0.0000 1.0000 74.19 59.5 106.893 0.0000 1.0000 74.1960.5 98,796 0.0000 1.0000 74.1961.5 98,354 0.0000 1. 0000 74.1962.5 98,336 0.0000 1. 0000 74.1963.5 96,500 0.0000 1. 0000 74.1964.5 95,700 0.0000 1.0000 74.1965.5 95.574 0.0000 1.0000 74.19 66.5 97,009 0.0000 1.0000 74.1967.5 97,009 0.0000 1.0000 74.1968.5 96,891 0.0000 1.0000 74.19 69.5 96,891 0.0000 1. 0000 74.1970.5 91,696 0.0000 1.0000 74.19 71. 5 1,545 0.0000 1.0000 74.19 72.5 1,545 0.0000 1.0000 74.1973.5 1,435 0.0000 1. 0000 74.1974.5 1,435 0.0000 1. 0000 74.19 75.5 1.435 0.0000 1.0000 74.1976.5 1,484 0.0000 1.0000 74.1977.5 1.484 0.0000 1.0000 74.1978.5 1.484 0.0000 1.0000 74.19 ~i-162 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 204 of 491 IDAHO POWER COMPANY ACCOUNT 390.12 STRUCTURES AND IMPROVEMENTS ~ EXCLUDING CHQ BUILDING ORIGINAL LIFE TABLE, CONT. PLACEMENT BAN 1919-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 79.5 1,484 0.0000 1.0000 74.19 80.5 1,484 0.0000 1.0000 74.19 81. 5 49 0.0000 1.0000 74.19 82.5 49 0.0000 1.0000 74.19 83.5 49 0.0000 1.0000 74.1984.5 49 0.0000 1.0000 74.1985.5 49 0.0000 1.0000 74.19 86.5 49 0.0000 1. 0000 74.1987.5 49 0.0000 1.0000 74.1988.5 49 0.0000 1.0000 74.19 89.5 49 0.0000 1.0000 74.19 90.5 49 0.0000 1.0000 74.19 91. 5 74.19 ~i-163 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 205 of 491 (J Eo (JZi:ri ::~i:ri D::0 u i:i:Ai?-~0 ~::H H Ai 0 ::~..g;0 0u::(J i:ri ::(Ji:r-Eo3:00ri0Ai..~(J0° ~0N ~0 °H 0\..M ~Eo S H0H0i:uu 0 r- °00rooi W tzIU¡zw í W:E. ë2 wiWU10.5 i r; Q. 1°0..-00INNI~*l T""" ¡ . 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Spanos, IPC Page 206 of 491 IDAHO POWER COMPANY ACCOUNT 390.20 LEASEHOLD IMPROVEMENTS ORIGINAL LIFE TABLE PLACEMENT BAND 1946-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 7,415,440 0.0000 1. 0000 100.000.5 7,452.799 2.530 0.0003 0.9997 100.001.5 6,641,246 0.0000 1.0000 99.972.5 6.105,321 6,500 0.0011 0.9989 99.973.5 4,797,547 5,000 0.0010 0.9990 99.864.5 5.061,154 0.0000 1. 0000 99.765.5 5,044,774 0.0000 1.0000 99.766.5 5,000,671 869 0.0002 0.9998 99.767.5 4,981,458 0.0000 1.0000 99.748.5 4,836,892 0.0000 1. 0000 99.74 9.5 3.025,781 0.0000 1.0000 99.7410.5 3.414,773 2.171 0.0006 0.9994 99.7411.5 3,234,164 0.0000 1. 0000 99.6712.5 3.654,670 0.0000 1.0000 99.6713.5 2,549,448 3,000 0.0012 0.9988 99.6714.5 2,737,432 0.0000 1. 0000 99.5615.5 2,709,926 0.0000 1.0000 99.5616.5 2,656,686 124.331 0.0468 0.9532 99.5617.5 2,523,268 0.0000 1. 0000 94.9018.5 2,523,268 0.0000 1.0000 94.90 19.5 2,216,622 1,000 0.0005 0.9995 94.9020.5 2,039,967 0.0000 1.0000 94.8621.5 1,998,003 0.0000 1.0000 94.8622.5 1.897,697 23,528 0.0124 0.9876 94.8623.5 1,831.749 534 0.0003 0.9997 93.6824.5 1,520,474 0.0000 1. 0000 93.6525.5 1,035,583 0.0000 1.0000 93.6526.5 988,714 25,160 0.0254 0.9746 93.6527.5 534,156 0.0000 1. 0000 91. 2728.5 234,866 0.0000 1.0000 91.27 29.5 34,647 0.0000 1.0000 91.2730.5 19,442 0.0000 1.0000 91. 27 31. 5 19,213 0.0000 1.0000 91. 2732.5 9,963 0.0000 1. 0000 91. 2733.5 9,963 0.0000 1.0000 91.2734.5 9.963 2.506 0.2516 0.7484 91.2735.5 7,456 0.0000 1. 0000 68.3136.5 7,456 0.0000 1. 0000 68.3137.5 5,833 2,835 0.4859 0.5141 68.3138.5 3,471 728 0.2097 0.7903 35.11 ~i-165 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 207 of 491 IDAHO POWER COMPANY ACCOUNT 390.20 LEASEHOLD IMPROVEMENTS ORIGINAL LIFE TABLE.CONT. PLACEMENT BAN 1946-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 2.743 526 0.1919 0.8081 27.7540.5 2,377 0.0000 1. 0000 22.42 41. 5 633 0.0000 1.0000 22.4242.5 633 0.0000 1.0000 22.4243.5 633 0.0000 1. 0000 22.4244.5 633 0.0000 1.0000 22.4245.5 1,673 0.0000 1.0000 22.4246.5 5,087 0.0000 1.0000 22.4247.5 5,087 0.0000 1.0000 22.4248.5 6,274 0.0000 1.0000 22.42 49.5 7,975 0.0000 1.0000 22.42 50.5 7.975 412 0.0516 0.9484 22.42 51. 5 7,563 0.0000 1. 0000 21.2752.5 7,563 161 0.0212 0.9788 21.2753.5 7,342 0.0000 1. 0000 20.8254.5 7,342 0.0000 1.0000 20.8255.5 7,342 0.0000 1.0000 20.82 56.5 7.342 0.0000 1.0000 20.8257.5 7,342 0.0000 1. 0000 20.8258.5 7,342 0.0000 1.0000 20.82 59.5 7,342 0.0000 1. 0000 20.8260.5 6,302 0.0000 1. 0000 20.82 61. 5 2,888 0.0000 1. 0000 20.82 62.5 2,888 0.0000 1.0000 20.8263.5 1,701 0.0000 1. 0000 20.8264.5 20.82 ~i-166 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 208 of 491 i~CD.. tJz 6 0 :;:;a:~(j 5 0 ~ZLiÜ ff 4 ( Cl ;; ~ Q ~ ~, g ~ g ; N D l z ; : 01 5 0 z ~J I ~ $ i -t - " ' ~ .i i : ( ' co ( ' . ~ n i ..~00 ID A H O P O W E R C O M P A N Y AC C O U N T 3 9 1 . 2 1 O F F I C E F U R N I T U R E A N E Q U I P M E N T - E D P E Q U I P M E N T - S E R V E R S OR I G I N A L A N S M O O T H S U R V I V O R C U R V E S lO t i \ ~~ ~ ~ I N A ~ ~ ~ ~ V - ~ - ~ î 9 9 6 = 2 Õ - í õ Ê X P Ê R ¡ Ë N ê E : - i 19 7 2 - 2 0 1 0 P L A C E t - l E N T \ i \ i "\ \ i \ f( ì \ M I \ l = L i ' ) "" ~ \ . i \\. ~ . . . "- . . 9(80 70 3( : 2(10 o o 5 10 15 20 AG E I N Y E A R S 25 30 35 40 IDAHO POWER COMPANY ACCOUNT 391.21 OFFICE FURNITURE AND EQUI PMENT -EDP EQUIPMENT -SERVERS ORIGINAL LIFE TABLE PLACEMENT BAND 1972 -2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 9,350,345 0.0000 1.0000 100.000.5 9,877.555 0.0000 1.0000 100.00 1. 5 9,671,233 0.0000 1.0000 100.002.5 7,468,207 0.0000 1.0000 100.003.5 7,476,701 4,311 0.0006 0.9994 100.004.5 7,647.442 2,545,517 0.3329 0.6671 99.945.5 5,314,469 2,354,864 0.4431 0.5569 66.686.5 3,022,040 84,907 0.0281 0.9719 37.137.5 2,968,132 17,062 0.0057 0.9943 36.098.5 3,010,440 44,536 0.0148 0.9852 35.88 9.5 3,203,018 814,506 0.2543 0.7457 35.3510.5 2,531,360 1,142.948 0.4515 0.5485 26.3611.5 1,556,343 156,914 0.1008 0.8992 14 .4612.5 1,432,190 278,709 0.1946 0.8054 13.0013.5 1,154,333 420.024 0.3639 0.6361 10.47 14.5 734,309 62,435 0.0850 0.9150 6.6615.5 671,873 30,999 0.0461 0.9539 6.09 16.5 640,875 59,369 0.0926 0.9074 5.8117.5 581,505 237,114 0.4078 0.5922 5.2718.5 344.391 142,848 0.4148 0.5852 3.12 19.5 201,544 167,931 0.8332 0.1668 1. 83 20.5 33,739 32,762 0.9711 0.0289 0.30 21. 5 976 851 0.8717 0.1283 0.0122.5 125 0.0000 1. 0000 0.0023.5 256 0.0000 1.0000 0.0024.5 256 0.0000 1.0000 0.0025.5 256 0.0000 1.0000 0.0026.5 256 0.0000 1.0000 0.0027.5 256 0.0000 1.0000 0.0028.5 256 125 0.4887 0.5113 0.00 29.5 131 0.0000 1.0000 0.0030.5 131 0.0000 1.0000 0.00 31. 5 131 131 1.0000 0.0032.5 111-168 Exhibit No. 1 Case No. IPG-E-12-o8 J. Spanos,lPC Page 210 of 491 ri ~,.p.~Hi:CIiri::E-~Z :Jriu~p.~::H 0 ~:J ::a Hp.ri ::::~0 Z :Ju0CIH~~:iriE-:s E-00~0p.0 ::p.CI o CI~ ~ 0o ~H E-,.i:0 ZroH0NH0\~ro 0 E- 50uui: r-~-".-~I..,w i-IUz'Zw I ~ ¿: i ci UJ: lU uI a. :5 I (; a. ¡ S:8100!NNiI'iNN100'iOO;INN'i .i J I UJ;:)ì ci:: ¡u ,-I 11 I ..z D¡§ I ci VI0 S V~ f ./i--/V//V//'V/ / i oo g æ;R oto o..o("oN;¡o ÐNII\IM:lnS IN38H3d oN 00.. ;e "'.- N (j0:c;W0)-.. Z il C)c; 00 (0 .. N oo ~i-169 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 211 of 491 IDAHO POWER COMPANY ACCOUNT 392.30 TRASPORTATION EQUIPMENT - AIRPLANE ORIGINAL LIFE TABLE PLACEMENT BAN 2002-2005 EXPERIENCE BAN 2002 -2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 2,580,220 0.0000 1.0000 100.00 0.5 2,580,220 0.0000 1.0000 100.001.5 2,580,220 0.0000 1.0000 100.002.5 2,580,220 0.0000 1.0000 100.00 3.5 2,580,220 0.0000 1.0000 100.00 4.5 2.580,220 0.0000 1.0000 100.005.5 2,044,748 0.0000 1.0000 100.00 6.5 1,989.363 0.0000 1. 0000 100.007.5 1,854,900 0.0000 1.0000 100. 008.5 100.00 ~i-170 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 212 of 491 ID A H O P O W E R C O M P A N Y AC C O U N T 3 9 2 . 9 0 T R A S P O R T A T I O N E Q U I P M E N T - T R A I L E R S OR I G I N A L A N D S M O O T H S U R V I V O R C U R V E S 10 0 90 . ~ ~ - = ~ i i I O R I G I N ¡ ~ - ¿ ~ ; ~ ; . 1 9 9 6 - 2 0 i c l E X P E i ú E N ë E l i I ~ , . . . . . i 9 4 9 ~ 2 0 1 0 P L A C E M E N T , ~ ' - '\ . . I ~ I . "\ . . . . \. . . "\ · I ) W A 3 5 - 5 , \~ : \. . . \. , \ '\ " "~- - 10 20 30 40 AG E I N YE A R S 50 60 70 80 80 70 i...... t:z 6 0 ::::€I;:èJ 5 0 I-ZWü ff 4 0 a. 30 20 10 't ~ ( " ~ II e n i i ~ 'i i l ß ! i N: i Z . . ~i i P ) ~ 0- - . -h - " t - i .i ' t ( " co ( " , .. i : ..g oo IDAHO POWER COMPANY ACCOUNT 392.90 TRASPORTATION EQUIPMENT -TRAILERS ORIGINAL LIFE TABLE PLACEMENT BAND 1940-2010 EXPERIENCE BAND 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT BURV BEGIN OF BEGINNING OF DURING AGE RETMT BURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 0.0 2.269,655 0.0000 1.0000 100.000.5 2,328,914 0.0000 1.0000 100.00 1.5 2,362,438 10.170 0.0043 0.9957 100.00 2.5 2,359,025 0.0000 1.0000 99.573.5 2.436,493 3,786 0.0016 0.9984 99.574.5 2,260,327 2,136 0.0009 0.9991 99.415.5 2,049.011 8,080 0.0039 0.9961 99.326.5 2,016,984 4,467 0.0022 0.9978 98.937.5 2,083,856 1,450 0.0007 0.9993 98.71 8.5 1,988,191 0.0000 1. 0000 98.64 9.5 1,875,554 14.246 0.0076 0.9924 98.6410.5 1,787,659 12,615 0.0071 0.9929 97.89 11 .5 1,969,911 15,568 0.0079 0.9921 97.20 12.5 2,070,431 13,927 0.0067 0.9933 96 .43 13 .5 1,926,293 31,953 0.0166 0.9834 95.78 14.5 1,838,585 40,976 0.0223 0.9777 94.2015.5 1,707,833 18.562 0.0109 0.9891 92.1016.5 1,572,738 56,198 0.0357 0.9643 91.1017.5 1,479,485 42,978 0.0290 0.9710 87.8418.5 1,007,075 0.0000 1.0000 85.29 19.5 950,382 24,635 0.0259 0.9741 85.2920.5 891,748 15,917 0.0178 0.9822 83.08 21. 5 876,852 9,200 0.0105 0.9895 81.6022.5 769.462 11,562 0.0150 0.9850 80.7423.5 691,777 45.562 0.0659 0.9341 79.53 24.5 651.231 10,631 0.0163 0.9837 74.2925.5 571,213 0.0000 1.0000 73.0826.5 356,671 766 0.0021 0.9979 73.0827.5 266,757 9.256 0.0347 0.9653 72.9228.5 203,082 8,751 0.0431 0.9569 70.39 29.5 193,001 7,430 0.0385 0.9615 67.3630.5 181,580 0.0000 1.0000 64.76 31. 5 183,182 0.0000 1.0000 64.7632.5 198,490 2,235 0.0113 0.9887 64.7633.5 196,255 3,703 0.0189 0.9811 64.0334.5 188,238 0.0000 1.0000 62.8335.5 122,414 8,623 0.0704 0.9296 62.8336.5 92,096 19.161 0.2081 0.7919 58.4037.5 72,879 1,601 0.0220 0.9780 46.2538.5 75,593 1,653 0.0219 0.9781 45.23 ~i-172 Exhibit NO.1 Case No. IPC-E.12.08 J. Spanos, IPC Page 214 of 491 IDAHO POWER COMPANY ACCOUNT 392.90 TRASPORTATION EQUIPMENT -TRAILERS ORIGINAL LIFE TABLE,CONT. PLACEMENT BAN 1940-2010 EXPERIENCE BAN 1996-2010 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF INTERVAL AGE INTERVAL INTERVAL RATIO RATIO INTERVAL 39.5 56,311 1,200 0.0213 0.9787 44.2440.5 61,379 1,464 0.0238 0.9762 43.30 41. 5 41,647 0.0000 1.0000 42.2742.5 41,647 0.0000 1.0000 42.2743.5 37,167 0.0000 1.0000 42.27 44.5 43,711 7,500 0.1716 0.8284 42.2745.5 36,211 0.0000 1.0000 35.0246.5 37.709 O. 0000 1.0000 35.0247.5 19,316 0.0000 1.0000 35.0248.5 19,950 739 0.0370 0.9630 35.02 49.5 20,634 0.0000 1. 0000 33.7250.5 20,634 0.0000 i.oooo 33.72 51. 5 20.634 1,220 0.0591 0.9409 33.7252.5 19.414 0.0000 1.0000 31.7353.5 11,214 0.0000 1.0000 31.73 54.5 11,350 148 0.0131 0.9869 31.7355.5 10,098 0.0000 1. 0000 31. 3156.5 10,098 0.0000 1.0000 31. 3157.5 10,098 163 0.0161 0.9839 31.3158.5 9.935 161 0.0162 0.9838 30.80 59.5 2,316 42 0.0182 0.9818 30.3160.5 2,273 0.0000 1.0000 29.7561.5 775 141 0.1823 0.8177 29.7562.5 634 0.0000 1.0000 24.3363.5 24.33 ~i-173 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 215 of 491 ~i-174 NET SALVAGE STATISTICS Exhibit No.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 216 of 491 IDAHO POWER COMPANY ACCOUNT 311.00 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 2,435 2,408 99 6,775-278 -9,183 -377 - 1997 134,402 31,178 23 135 0 31,043-23 - 1998 8,340 8,340- 1999 47,200 73 0 7,103 15 7,031 15 2000 16.931 67 0 6,537 39 6,470 38 2001 2.338 0 0 0 2002 33,069 0 0 0 2003 36,668 0 0 0 2004 2005 40,709 0 0 0 2006 271,303 0 0 0 2007 57.744 25,654 44 0 25,654-44 - 2008 266,953 26,006 10 0 26.006-10- 2009 305.737 8.368 3 0 8,368-3 - 2010 1,809,612 33,971 2 0 33.971-2 - TOTAL 3,025,103 136,064 4 7,000 0 129,064-4 - THREE-YEAR MOVING AVERAGES 96-98 45.613 13,975 31 2,213-5-16.188-35-97-99 60,534 13,197 22 2,413 4 10.784-18 - 98-00 21,377 2,827 13 4,547 21 1,720 8 99-01 22,157 47 0 4,547 21 4.500 2000-02 17,446 22 0 2,179 12 2,157 1201-03 24,025 0 0 0 02-04 23,246 0 0 0 03 -05 25,792 0 0 0 04 -06 104.004 0 0 0 05-07 123,252 8,551 7 0 8,551-7- 06-08 198,667 17.220 9 0 17,220-9- 07-09 210.145 20,009 10 0 20.009-10- 08- 10 794,101 22,781 3 0 22.781-3 - FIVE-YEAR AVERAGE 06-10 542,270 18,800 3 0 18,800-3 - ~i-175 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 217 of 491 IDAHO POWER COMPANY ACCOUNTS 312.10 AND 312.20 BOILER PLANT EQUIPMENT -COMBINED SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 2.946,063 231,297 8 263 0 231,034-8- 1997 1,460,880 65,690 4 102,069 7 36,379 2 1998 13,266 13,266- 1999 1,951,486 61,536 3 53,988 3 7,548-0 2000 406,658 4,427 1 320-0 4,747-1- 2001 71,880 0 0 0 2002 1.768,650 5 0 0 5-0 2003 1,163,073 0 0 0 2004 2005 1,535,903 0 0 0 2006 4,485,105 0 0 0 2007 5,413,853 1,406,712 26 33,325 1 1,373,387-25- 2008 7,731,971 1,642.471 21 120,638 2 1,521,833-20- 2009 16,284,072 3,859,312 24 50,726 0 3,808,586-23- 2010 14,017,871 2.415,659 17 189.775 1 2,225,884-16- TOTAL 59,237,466 9,700,375 16 550,464 1 9,149,912-15- THREE-YEAR MOVING AVERAGES 96-98 1,468.981 103,417 7 34,111 2 69,307-5- 97-99 1,137.455 46,830 4 52,019 5 5,188 0 98-00 786,048 26,410 3 17,889 2 8,520-1-99-01 810,008 21,988 3 17,889 2 4,098-1- 00-02 749,063 1,477 0 107-0 1,584-0 01-03 1,001.201 2 0 0 2-0 02-04 977,241 2 0 0 2-0 03 -05 899,659 0 0 004-06 2,007,003 0 0 0 05~07 3,811,620 468,904 12 11,108 0 457,796-12 - 06-08 5,876,976 1,016,394 17 51.321 1 965,073-16-07-09 9.809,965 2,302,832 23 68,230 1 2.234,602-23- 08- 10 12.677,971 2,639,147 21 120,380 1 2.518.768-20- FIVE-YEAR AVERAGE 06- 10 9,586,574 1,864,831 19 78,893 i 1.785,938-19- 111-176 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 218 of 491 IDAHO POWER COMPANY ACCOUNT 312.30 BOILER PLANT EQUIPMENT -RAILCARS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1997 491 491- 1998 1999 122,239 0 0 0 2000 2001 2002 2003 128 i 583 0 0 0 2004 2005 2006 2007 2008 2009 2010 11,583 83-11,666- TOTAL 250,822 12,074 5 83 -0 12,157-5- THREE-YEAR MOVING AVERAGES 97-99 40,746 164 0 0 164-0 98-00 40,746 0 0 0 99-01 40.746 0 0 0 00-02 01-03 42,861 0 0 0 02 -04 42,861 0 0 0 03-05 42,861 0 0 0 04-06 05-07 06-08 07-09 08-10 3.861 28-3,889- FIVE-YEAR AVERAGE 06-10 2,317 i 7-2,333- ~i-177 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 219 of 491 IDAHO POWER COMPANY ACCOUNT 314.00 TUBOGENERATOR UNITS SUMMY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUN PCT AMOUN PCT AMOUNT PCT 1996 1.065,470 92.645 9 23,434 2 69,211-6- 1997 251,593 108,390 43 67,350 27 41,040-16- 1998 216 216- 1999 1,699,567 61,822 -4-61.091-4-731 0 2000 638,018 4,034 1 161-0 4,194-1- 2001 2002 338,778 0 0 0 2003 1,504,250 0 0 0 2004 2005 112,068 0 0 0 2006 2.432,374 0 0 0 2007 3,326,718 215,911 6 0 215,911-6- 2008 1,444.724 428,056 30 3,651 0 424,405-29- 2009 3,178.768 1,245.873 39 166,238 5 1,079,635-34 - 2010 3,616.146 702,425 19 54,144 1 648,281-18- TOTAL 19,608,474 2,735,728 14 253,566 1 2.482,162-13- THREE-YEAR MOVING AVERAGES 96-98 439,021 67,084 15 30,261 7 36,823-8- 97-99 650,386 15.595 2 2,086 0 13,508-2 - 98-00 779,195 19,191-2 -20.417-3 -1,227-0 99-01 779.195 19,263-2 -20,417-3 -1,154-0 00-02 325,599 1.344 0 54 -0 1,398-0 01-03 614,343 0 0 0 02-04 614.343 0 0 0 03 -05 538,773 0 0 0 04-06 848,147 0 0 0 05-07 1,957,053 71,970 4 0 71.970-4 - 06-08 2.401,272 214,656 9 1.217 0 213,438-9- 07-09 2.650,070 629,947 24 56,630 2 573.317-22 - 08-10 2,746.546 792,118 29 74,678 3 717,440-26- FIVE-YEAR AVERAGE 06-10 2,799,746 518,453 19 44.807 2 473,646-17- ~i-178 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 220 of 491 IDAHO POWER COMPANY ACCOUNT 315.00 ACCESSORY ELECTRIC EQUIPMENT SUMMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 70,311 170 0 48 0 122-0 1997 131,554 2,591 2 8 0 2,583 -2 - 1998 1999 4,722 0 0 0 2000 17 17 2001 2002 572,655 0 0 0 2003 2004 2005 47,352 0 0 0 2006 2007 62,678 716 1 0 716-1- 2008 860,134 3,750 0 0 3.750-0 200'9 933,816 6,118 1 1.667 0 4,451-0 2010 2.728,385 20,136 1 0 20,136-1- TOTAL 5,411,607 33,480 i 1,739 0 31,740-1- THREE-YEA MOVING AVERAGES 96-98 67,288 920 1 19 0 902-1- 97-99 45,425 864 2 3 0 861-2- 98-00 1.574 0 6 0 6 0 99-01 1,574 0 6 0 6 0 00-02 190,885 0 6 0 6 0 01-03 190.885 0 0 0 02-04 190,885 0 0 0 03 -05 15.784 0 0 0 04 -06 15,784 0 0 0 05-07 36,677 239 1 0 239-1- 06-08 307.604 1,488 0 0 1,488-0 07-09 618.876 3,528 1 556 0 2,972-0 08-10 1,507,445 10,001 1 556 0 9,446-1- FIVE-YEAR AVERAGE 06-10 917,003 6.144 1 333 0 5,810-1- 111-179 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 221 of 491 IDAHO POWER COMPANY ACCOUNT 316.00 MISCELLAEOUS POWER PLANT EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 43,243 45,564 105 22 0 45,542-105- 1997 110,167 17 -0 374 0 391 0 1998 1999 141,658 270 0 0 270-0 2000 228 228 2001 2002 2003 2004 2005 2006 211,835 0 0 0 2007 401.099 0 0 0 2008 698.604 0 10,930 2 10,930 2 2009 691,107 7,792 1 13,724 2 5,932 1 2010 325,298 330 0 96,677 30 96,346 30 TOTAL 2,623,011 53,939 2 121.954 5 68,016 3 THREE-YEAR MOVING AVERAGES 96-98 51,137 15,182 30 132 0 15,050-29- 97-99 83,942 84 0 125 0 41 0 98-00 47,219 90 0 76 0 14-0 99-01 47,219 90 0 76 0 14-0 00-02 76 76 01-03 02 -04 03 -05 04 -06 70,612 0 0 0 05 -07 204.311 0 0 0 06-08 437,180 0 3,643 1 3,643 1 07-09 596,937 2,597 0 8,218 1 5,621 1 08 -10 571,670 2,708 0 40,444 7 37,736 7 FIVE-YEAR AVERAGE 06- 10 465,589 1,625 0 24,266 5 22,642 5 ~i-180 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 222 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 1,266 60 5 97 8 37 3 1955 12,930 1.019 8 168 1 851-7- 1956 4,925 2,078 42 250 5 1.828-37- 1957 158,200 183 0 220 0 37 0 1958 9,092 120 1 389 4 269 3 1959 3.301 93 3 0 93-3 -1960 1,468 130 9 0 130-9-1961 904 64.629 1,269 140 63,360- 1962 13,919 12,234 88 4,981 36 7,253-52- 1963 289 9 3 0 9-3 -1964 4,469 5 0 2,642 59 2,637 5919653,922 210 5 20 1 190-5- 1966 136,333 882 1 3,314 2 2,432 2 1967 119,293 722 1 400 0 322 -0196816,104 1,751 11 0 1,751-11-1969 9,572 9.572 100 2,560 27 7,012-73 - 1970 14.869 1.106 7 645 4 461-3 -1971 29,517 1,009 3 55 0 954-3 - 1972 15,594 995 6 0 995-6- 1973 6,017 ios 2 1,801 30 1,696 28 1974 45,311 161 0 4,413 10 4,252 9 1975 31,365 0 25 0 25 0 1976 16,770 140 1 1,299 8 1,159 7 1977 17,673 Ö 0 0 1978 1,072,362 5,377 1 200 0 5,177-0197923,341 402,897 973 4 401,924- 1980 14,778 0 825 6 825 6198131,919 0 12,446 39 12,446 39 1982 106,619 4,974 5 1,040 1 3,934 -4 -1983 313,008 23.129 7 569 0 22,560-7 - 1984 48,845 16,536 34 0 16,536-34 - 1985 134.316 27,654 21 22,482 17 5,172-4 -1986 27,696 32,288 117 9.500 34 22.788-82 - 1987 145,754 6,852 5 8,075 6 1,223 1 1988 11,421 4,917 43 1,161 10 3,756 -33 -1989 49,292 20,740 42 1,523 3 19,217-39- 1990 175,353 0 1, B27 1 1.827 1 1991 112.942 51,740 46 0 51,740-46- 1992 110,376 32,959 30 0 32,959-30 - 1993 77,421 46,764 60 0 46,764-60- 1994 331,227 127.493 38 0 127,493-38-1995 82,497 39,305 48 0 39,305-48- 111-181 Exhibit No. 1 Case No. IPC.E-12-08 J. Spanos, IPC Page 223 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AN IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 116.517 47,968 41 4,100 4 43,868-38- 1997 37,440 66,239 177 0 66,239-177- 1998 6,588 132,580 120,793 11,787-179- 1999 174,256 0 0 0 2000 2001 9,910 5,050 51 0 5.050-51- 2002 59,996 0 0 0 2003 2004 64,006 3,511 5 745-1-4,255-7 - 2005 49.560 66 0 61.928 125 61.862 125 2006 87.117 29,319 34 5.197 6 24,122-28- 2007 295,633 1,581-1-633 0 2,213 1 2008 73,300 43,532 59 2.115 3 41,416~57- 2009 91,478 199,171 218 41,792 46 157,379-i 72- 2010 79,259 36,170-46-4.798-6-31,371 40 TOTAL 4,687.329 1,430.523 31 316,184 7 1,114,339-24 - THREE-YEA MOVING AVERAGES 54-56 6,374 1,052 17 172 3 881-14- 55-57 58,685 1,093 2 213 0 881-2 - 56-58 57,406 794 1 286 0 507-1- 57-59 56,864 132 0 203 0 71 0 58-60 4,620 114 2 130 3 15 0 59-61 1,891 21,617 423 22 21,194- 60-62 5,430 25,664 473 2,083 38 23,581-434- 61-63 5,037 25,624 509 2,083 41 23,541-467- 62-64 6,226 4,083 66 2,541 41 1,542 -25- 63-65 2.893 75 3 887 31 813 2864-66 48,241 366 1 1.992 4 1,626 3 65-67 86,516 605 1 1,245 1 640 1 66-68 90,577 1.118 1 1,238 1 120 067-69 48,323 4,015 8 987 2 3.028-6- 68-70 13,515 4,143 31 1,068 8 3,075-23 - 69-71 17,986 3,896 22 1,087 6 2,809-16- 70-72 19,993 1.037 5 233 1 803-4 - 71-73 17,043 703 4 619 4 84 -0 72-74 22,307 420 2 2,071 9 1,651 7 73 -75 27,564 89 0 2,080 8 1,991 7 74 -76 31,149 100 0 1,912 6 1,812 6 75-77 21,936 47 0 441 2 395 2 ~i-182 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 224 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NETREGULAREMOVALSALVAGESALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT peT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 368,935 1,839 0 500 0 1,339-077-79 371,125 136,091 37 391 0 135,700-37-78-80 370,160 136,091 37 666 0 135,425-37-79-81 23,346 134,299 575 4,748 20 129,551-555-80-82 51,105 1,658 3 4,770 9 3,112 681-83 150.515 9,368 6 4,685 3 4,683 -3-82-84 156,157 14,880 10 536 0 14,343-9-83-85 165.390 22,440 14 7,684 5 14,756-9-84-86 70,286 25,493 36 10,661 15 14,832-21-85-87 102,589 22,265 22 13,352 13 8,912 -9-86-88 61,624 14,686 24 6,245 10 8,440-14 -87-89 68,822 10,836 16 3,586 5 7.250-11-88-90 78,689 8,552 11 1.504 2 7,049-9-89-91 112,529 24,160 21 1,117 1 23.043-20-90-92 132,890 28,233 21 609 0 27,624-21-91-93 100,246 43,821 44 0 43,821-44- 92 - 94 173,008 69,072 40 0 69,072-40-93-95 163,715 71,187 43 0 71,187-43 -94-96 176,747 71,589 41 1,367 1 70,222-40-95-97 78.818 51,171 65 1,367 2 49,804-63 -96-98 53,515 82,262 154 41,631 78 40,631-76-97-99 72.761 66,273 91 40,264 55 26, 009~36-98-00 60,281 44,193 73 40,264 67 3,929-7-99-01 61,389 1,683 3 0 1,683 -3 -00-02 23,302 1,683 7 0 1.683 -7-01-03 23,302 1.683 7 0 1,683-7 -02-04 41,334 1,170 3 248-I-1,418 -3 -03 -05 37,855 1,192 3 20,394 54 19,202 5104-06 66,894 10,965 16 22,127 33 11,162 1705-07 144,103 9,268 6 22,586 16 13,318 906-08 152,016 23,757 16 2.648 2 21,108-14 -07-09 153,470 80,374 52 14,847 10 65,527-43 -08-10 81.346 68,845 85 13,036 16 55,808-69- FIVE-YEAR AVERAGE 06-10 125,357 46.854 37 8,988 7 37,867-30 - 111-183 Exhibit No. 1 Case No. IPC.E-12-0 J. Spanos, IPC Page 225 of 491 IDAHO POWER COMPANY ACCOUNT 332.00 RESERVOIRS,DAMS AND WATERWAYS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1955 35,063 3 0 0 3 -0 1956 1957 263,296 91 0 0 91-0 1958 1959 641,779 249 0 352,917 55 352,668 55 1960 1961 88,225 3,050 85,175- 1962 2.336 16.843 721 2,023 87 14.820-634 - 1963 49 16 33 - 1964 3,603 3,603- 1965 599 13 2 0 13 -2 - 1966 2 0 2,688 2,688 1967 3,781 0 0 0 1968 LIS 118 1969 736 75 661- 1970 566 0 0 0 1971 382 0 0 0 1972 300 0 0 0 1973 1974 1,867 2,555 137 0 2,555-137- 1975 204 0 0 0 1976 1977 11.387 0 4,850 43 4,850 43 1978 434.137 26,124 6 200 0 25.924-6 - 1979 28,290 0 0 0 1980 1981 49,254 4.198 9 0 4,198-9- 1982 4,505 14,050 312 0 14,050-312 - 1983 36,144 0 0 0 1984 3,174 453 14 0 453-14 - 19B5 174,529 296,586 170 0 296,586-170 - 1986 110,912 522,410 471 0 522,410-471- 1987 8,894 88.129 991 0 88.129-991- 1988 7,545 5,870 78 35 0 5,835-77- 1989 186,918 4.738 3 93,484 50 88,746 47 1990 64,183 45.738 71 3,099 5 42,639-66- 1991 87,828 12,689 14 0 12,689-14 - 1992 9,324 72,686 780 0 72.686-780- 1993 5,442 451 8 0 451-8 - 1994 171,171 32,667 19 0 32,667-19 - 1995 63,672 0 0 0 1996 2,845-2,845 111-184 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 226 of 491 IDAHO POWER COMPAN ACCOUNT 332.00 RESERVOIRS,DAMS AND WATERWAYS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1997 1,655 495,652 0 495,652- 1998 1999 560 213 347- 2000 55,688 0 0 0 2001 23,695 0 0 0 2002 1,006 0 0 0 2003 30,859 0 0 0 2004 64,632 0 0 0 2005 2006 2,331 168 2.163- 2007 25,000 2,353 9 0 2,353 -9- 2008 24,347 0 0 0 2009 68,476 0 0 0 2010 50,328 9,867 20 1,034 2 8,833-18 - TOTAL 2,753.169 1,747,073 63 463,970 17 1,283,104-47 - THREE-YEAR MOVING AVERAGES 55-57 99,453 31 0 0 31-0 56-58 87,765 30 0 0 30-0 57-59 301,692 113 0 117,639 39 11 7,526 39 58~60 213,926 83 0 117,639 55 11 7,556 55 59-61 213,926 29.491 14 118,656 55 89,164 42 60-62 779 35,023 1,691 217 33.332- 61-63 779 35,039 1,696 218 33,343- 62 -64 779 6,832 877 680 87 6,152 -790- 63-65 200 1.222 612 5 3 1,216-609- 64-66 200 1,205 602 896 447 309-154 - 65-67 1,461 4 0 896 61 892 61 66-68 1,261 0 935 74 935 74 67-69 1,260 245 19 64 5 181-14 - 68-70 189 245 130 64 34 181-96- 69-71 316 245 78 25 8 220-70 - 70-72 416 0 0 0 71-73 227 0 0 0 72-74 722 852 118 0 852-118- 73 -75 690 852 123 0 852-123 - 74 -76 690 852 123 0 852~123 - 75 -77 3,864 0 1,617 42 1,617 42 76-78 148,508 8,708 6 1,683 1 7,025-5 - 77 -79 157,938 8,708 6 1,683 1 7.025-4 - 111-185 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 227 of 491 IDAHO POWER COMPANY ACCOUNT 332.00 RESERVOIRS,DAMS AND WATERWAYS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 78 -80 154,142 8,708 6 67 0 8,641-6 - 79-81 25.848 1,399 5 0 1,399-5- 80-82 17,920 6.083 34 0 6.083-34 - 81 -83 29,968 6.083 20 0 6,083 -20- 82 -84 14,608 4.834 33 0 4,834-33 - 83 -85 71,282 99,013 139 0 99,013-139- 84 -86 96.205 273,150 284 0 273,150-284 - 85-87 98,112 302,375 308 0 302,375-308 - 86-88 42,450 205,470 484 12 0 205,458-484- 87 -89 67,786 32,912 49 31,173 46 1,739-3 - 88 -90 86,215 18.782 22 32,206 37 13,424 16 89-91 112,976 21,055 19 32,194 28 11,139 10 90 -92 53,778 43.704 81 1,033 2 42,671-79- 91-93 34,198 28,609 84 0 28,609-84 - 92 -94 61,979 35,268 57 0 35,268-57 - 93 -95 80,095 11,039 14 0 11,039-14- 94-96 78,281 9,941 13 0 9,941-13- 95-97 21,776 164,269 754 0 164,269-754 - 96-98 552 164,269 0 164,269- 97-99 552 165,404 71 13 165.333- 98-00 18,563 187 1 71 0 116-1- 99-01 26,461 187 1 71 0 116-0 00-02 26,796 0 0 0 01-03 18,520 0 0 0 02 -04 32,166 0 0 0 03 -05 31,830 0 0 0 04-06 21,544 777 4 56 0 721-3 - 05-07 8.333 1,561 19 56 1 1,505-18- 06 -08 16,449 1,561 9 56 0 1,505-9- 07-09 39,274 784 2 0 784 -2- 08-10 47,717 3,289 7 345 1 2,944 -6- FIVE-YEAR AVERAGE 06 -10 33,630 2,910 9 240 1 2,670-8 - ~i-186 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 228 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS,TUBINES AND GENERATORS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1955 58,265 177 0 355 1 178 0 1956 4,000 223 6 0 223-6 - 1957 86,510 30 0 0 30-0 1958 1959 320 47 15 0 47-15- 1960 10,169 86 1 2,521 25 2,435 24 1961 1962 1963 8,000 0 1,144 14 1,144 14 1964 63 63 - 1965 14 14- 1966 22 0 0 0 1967 1968 35,200 0 3,315 9 3,315 9 1969 18,037 0 1,239 7 1,239 7 1970 19,864 0 9.299 47 9,299 47 1971 28,098 0 4,163 15 4,163 15 1972 260,000 4,930 2 16,270 6 11,340 4 1973 264,753 4,254 2 8.925 3 4.671 2 1974 1975 1976 1977 48,553 0 20,150 42 20,150 42 1978 688.113 2,780 0 200 0 2,580-0 1979 1.054 0 0 0 1980 7,328 12 0 0 12-0 1981 27,553 11 0 0 11-0 1982 58,231 9,857 17 3,069 5 6,788-12 - 1983 8,136 4,462 55 4,050 50 412-5- 1984 66,415 0 0 0 1985 262,748 4,250 2 3,077 1 1,173 -0 1986 66,650 8,869 13 100,109 150 91,240 137 1987 367,691 87,805 24 75,022 20 12,783-3 - 1988 659.680 39,289 6 0 39,289-6- 1989 351,715 167,078 48 28,941 8 138,137-39- 1990 172,558 16,823 10 36,515 21 19,692 11 1991 104,741 31,695 30 23,335 22 B,360-8 - 1992 7,938 18,025 227 0 18,025-227 - 1993 24.690 37.794 153 0 37,794 -153 - 1994 794,946 169,735 21 0 169,735-21 - 1995 62,028 27,157 44 0 27,157-44 - 1996 18,909 18,550 98 0 18,550-98- ~i-187 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos, IPC Page 229 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS.TURBINES AND GENERATORS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1997 38,385 68,320- 178-0 68,320 178 1998 6.030 1,666 4.364- 1999 74.079 81,446 110 6,883 9 74.563-101- 2000 3,508 83,229-5,467 -156-77,762 2001 420,906 0 0 0 2002 2003 199,399 0 0 0 2004 411,206 0 0 0 2005 1,560 93 1,467- 2006 40,935 681 2 0 681-2 - 2007 65.312 679 1 312 0 366-1- 2008 65,598 248-0 3,032 5 3,280 5 2009 426,420 37,028 9 4,900 1 32,128-8- 2010 161,151 236,926 147 44,096 27 192,830-120- TOTAL 6,499,816 866,569 13 397,215 6 469,354-7 - THREE-YEAR MOVING AVERAGES 55-57 49,592 143 0 118 0 25-056-58 30,170 84 0 0 84-0 57-59 28,943 26 0 0 26-058-60 3.496 44 1 840 24 796 23 59-61 3,496 44 1 840 24 796 23 60-62 3,390 29 1 840 25 812 24 61-63 2,667 0 381 14 381 1462-64 2,667 21 1 381 14 360 1463-65 2,667 26 1 381 14 356 1364-66 7 26 350 0 26-350 -65-67 7 5 64 0 5-64- 66-68 11.741 0 1, ios 9 1, ios 967-69 17.746 0 1,518 9 1,518 968-70 24,367 0 4,618 19 4,618 19 69-71 22,000 0 4,900 22 4,900 2270-72 102,654 1,643 2 9,911 10 8.267 871-73 184,284 3,061 2 9,786 5 6,725 4 72-74 174,918 3,061 2 8,398 5 5,337 3 73 -75 88,251 1,418 2 2,975 3 1,557 2 74 -76 75-77 16,184 0 6,717 42 6,717 4276-78 245,555 927 0 6,783 3 5,857 277-79 245,907 927 0 6,783 3 5,857 2 ~i-188 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 230 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS.TURBINES AND GENERATORS SUMMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 78-80 232,165 931 0 67 0 864-079-81 11,978 8 0 0 8-080-82 31,037 3.293 11 1,023 3 2,270-7-81-83 31,307 4,777 15 2,373 8 2.404 -8-82-84 44,261 4,773 11 2.373 5 2,400-5 -83 -85 112,433 2,904 3 2,376 2 528-084-86 131,938 4,373 3 34,395 26 30.022 2385-87 232,363 33,641 14 59.403 26 25,761 1186-88 364,674 45,321 12 58,377 16 13,056 487-89 459,695 98,057 21 34,654 8 63,403-14 -88-90 394.651 74,397 19 21,819 6 52,578-13-89-91 209,671 71,865 34 29,597 14 42,268-20-90-92 95,079 22.181 23 19,950 21 2,231-2 -91-93 45,790 29,171 64 7,778 17 21,393-47- 92 -94 275,858 75,185 27 0 75,185-27 -93-95 293,888 78,229 27 0 78,229-27 -94-96 291,961 71,814 25 0 71,814-25 -95-97 39,774 7,538-19-0 7,538 1996-98 19,098 14,580-76-555 3 15,136 7997-99 37,488 6.385 17 2,850 8 3,536-9-98-00 25.862 1,416 5 1,027 4 388-2 -99-01 166,164 594-0 472 0 1,066 100-02 141,471 27,743-20-1,822-1-25,921 1801-03 206,768 0 0 002-04 203,535 0 0 003-05 203,535 520 0 31 0 489-004-06 150,714 747 0 31 0 716-005-07 35,416 973 3 135 0 838-2 -06-08 57,282 371 i 1,115 2 744 107-09 185,777 12,486 7 2,748 1 9,738-5-08-10 217,723 91,236 42 i 7,343 8 73,893-34 - FIVE-YEAR AVERAGE 06-10 151,883 55,013 36 10,468 7 44,545-29- ~i-189 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 231 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 1,213 24 2 39 3 15 1 1955 43,121 0 587 1 587 1 1956 1,682 43 3 127 8 84 5 1957 10,137 6 0 155 2 149 1 1958 15,801 460 3 8,320 53 7,860 50 1959 14,279 752 5 4,461 31 3,709 26 1960 4.065 344 8 269 7 75-2 - 1961 5,236 64 1 1,888 36 1,824 35 1962 3,823 134 4 1,193 31 1,059 28 1963 16,187 1,080 7 8.877 55 7,797 48 1964 10,368 2,183 21 107 1 2,076-20- 1965 10.412 545 5 713 7 168 2 1966 20,395 45 0 0 45-0 1967 6,116 124 2 0 124~2 - 1968 15,106 179 1 549 4 370 2 1969 6,919 187 3 318 5 131 2 1970 37,630 1,854 5 880 2 974-3 - 1971 29,325 2,867 10 7,756 26 4,889 17 1972 85,067 3,360 4 0 3,360-4 - 1973 17,144 471 3 2,617 15 2,146 13 1974 618 55 9 0 55-9- 1975 27,953 4,183 15 2,326 8 1,857-7- 1976 6,036 4,854 80 316 5 4,538-75 - 1977 8,866 2,668 30 5,911 67 3,243 37 1978 369,539 0 1,087 0 1,087 0 1979 6,353 0 258 4 258 4 1980 12,406 0 0 0 1981 22,262 2,847 13 0 2,847-13- 1982 45,085 4,314 10 821 2 3,493-8- 1983 69,694 7,272 10 1,064 2 6,208-9- 1984 18,774 21,405 114 400 2 21,005-112 - 1985 91,887 11,252 12 0 11,252-12 - 1986 63.312 9,562 15 1,130 2 8,432 -13- 1987 229,256 35,256 15 0 35,256-15- 1988 107,930 108,511 101 0 108,511-101- 1989 38,397 16.196 42 383 1 15,813-41- 1990 42.018 3,113 7 700 2 2,413-6- 1991 74,331 836 1 0 836-1 - 1992 178,402 7,769 4 0 7,769-4 - 1993 28,897 3,096 11 6.238 22 3,142 11 1994 186.808 33,939 18 0 33,939-18 - 1995 19,108 2,776 15 0 2,776-15- ~i-190 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 232 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 33,763 46,820 139 0 46,820-139- 1997 97,088 150 0 0 150-0 1998 47,168 7,150 15 2,880 6 4,270-9- 1999 710,192 103,844 15 797 0 103,047-15- 2000 942,552 19,583-2-86 0 19,669 2 2001 397,940 232 0 149 0 83 -0 2002 79,091 1,066 1 529 1 537-1- 2003 514,219 23 -0 0 23 0 2004 203,428 0 0 0 2005 26,507 3,723 14 637 2 3,086-12 - 2006 21,242 0 0 0 2007 173.471 731 0 0 732 -0 2008 214,024 7,828-4 -441 0 8,270 4 2009 563,480 59,004 10 9,146 2 49,859-9- 2010 242,880 36,816 15 9,415 4 27,401-11- TOTAL 6,269.002 526,729 8 83.571 1 443,158-7- THREE-YEAR MOVING AVERAGES 54-56 15,339 22 0 251 2 229 1 55-57 18,313 16 0 290 2 273 1 56-58 9,207 170 2 2,867 31 2,698 2957-59 13.406 406 3 4,312 32 3.906 29 58-60 11,382 519 5 4.350 38 3,831 34 59-61 7,860 387 5 2,206 28 1,819 23 60-62 4,375 181 4 1,117 26 936 21 61-63 8,415 426 5 3,986 47 3,560 42 62 -64 10,126 1,132 11 3,392 34 2,260 22 63-65 12,322 1.269 10 3,232 26 1,963 16 64 -66 13,725 924 7 273 2 651-5- 65-67 12,308 238 2 238 2 0 66-68 13,872 116 1 183 1 67 0 67-69 9,380 163 2 289 3 126 1 68-70 19,885 740 4 582 3 158-1- 69-71 24,625 1,636 7 2,985 12 1.349 570-72 50,674 2,694 5 2,879 6 185 0 71-73 43,845 2,233 5 3,458 8 1,225 3 72-74 34,276 1,295 4 872 3 423 -1- 73-75 15,238 1,570 10 1,648 11 78 1 74 -76 11,536 3,031 26 881 8 2,150-19- 75 -77 14,285 3,902 27 2,851 20 1,051-7- ~i-191 Exhibit NO.1 Case No. IPC-E-12-Q8 J. Spanos. IPC Page 233 of 491 IDAHO POWER COMPANY ACCOUNT 334. 00 ACCESSORY ELECTRIC EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 128,147 2,507 2 2,438 2 69-0 77-79 128,253 889 1 2,419 2 1,529 1 78- 80 129,433 0 448 0 448 0 79- 81 13,674 949 7 86 1 863-6- 80- 82 26,584 2,387 9 274 1 2,113-8 - 81-83 45,680 4,811 11 628 1 4.183 -9- 82-84 44,518 10,997 25 762 2 10.235-23 - 83 - 85 60,118 13,310 22 488 1 12,822-21- 84-86 57,991 14,073 24 510 1 13,563-23 - 85- 87 128,152 18.690 15 377 0 18,313-14 - 86- 88 133,499 51,110 38 377 0 50,733-38- 87- 89 125,194 53,321 43 128 0 53,193-42 - 88- 90 62,782 42,6Ò7 68 361 1 42,246-67- 89-91 51,582 6,715 13 361 1 6,354-12 - 90- 92 98,250 3,906 4 233 0 3,673 -4 - 91-93 93,877 3.900 4 2,079 2 1,821-2- 92-94 131,369 14,935 11 2,079 2 12.855-10- 93-95 78,271 13,270 17 2,079 3 11,191-14- 94-96 79,893 27,845 35 0 27,845-35- 95-97 49,986 16,582 33 0 16,582-33- 96-98 59,340 18,040 30 960 2 17,080-29- 97-99 284,816 37,048 13 1,226 0 35,822-13- 98-00 566,638 30,470 5 1,254 0 29,216-5~ 99-01 683,562 28,164 4 344 0 27,820-4 - 00-02 473,194 6,095-1-255 0 6,350 1 01-03 330,417 425 0 226 0 199-0 02-04 265,579 348 0 176 0 171-0 03-05 248,051 1,233 0 212 0 1.021-0 04-06 83,726 1,241 1 212 0 1,029-1- 05-07 73,740 1,485 2 212 0 1,272-2- 06-08 136,246 2,366-2 -147 0 2,513 2 07-09 316,991 17,303 5 3,196 1 14,107-4- 08-10 340,128 29,331 9 6,334 2 22,997-7- FIVE-YEAR AVERAGE 06-10 243,019 17,745 7 3,800 2 13,944-6- ~i-192 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 234 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 480 0 0 0 1955 2,029 0 325 16 325 16 1956 64 0 0 0 1957 3,562 0 0 0 1958 897 0 674 75 674 75 1959 1,954 9 0 121 6 112 6 1960 317 0 130 41 130 41 1961 155 0 0 0 1962 4,311 0 2,680 62 2,680 62 1963 1964 726 138 19 0 138-19- 1965 150 0 50 33 50 33 1966 2,224 0 2,150 97 2,150 97 1967 3,319 0 10 0 10 0 1968 1969 3,870 0 25 1 25 1 1970 1,454 0 200 14 200 14 1971 1,131 0 0 0 1972 3,541 25 1 1.300 37 1,275 36 1973 621 0 0 0 1974 1,938 0 0 0 1975 441 27 6 0 27-6 - 1976 2,482 80 3 243 10 163 7 1977 678 0 417 62 417 62 1978 89,293 339 0 1,108 1 769 1 1979 2.321 0 10 0 10 0 1980 6,535 0 0 0 1981 1,334 0 0 0 1982 1,360 20,583 2,517 185 18,066- 1983 30,864 247 1 192 1 55-0 1984 5,050 0 350 7 350 7 1985 49,842 0 720 1 720 1 1986 14,951 205 1 381 3 176 1 1987 10,383 73 1 1.400 13 1,327 13 1988 10,395 317 3 207 2 110-1- 1989 3.227 5.957 185 395 12 5,562-172- 1990 12,723 0 0 0 1991 100,469 226 0 431 0 205 0 1992 39,041 514 1 4,275 11 3,761 10 1993 19,865 4,027 20 14,150 71 10,123 51 1994 51,363 1,072 2 900 2 172 -0 1995 6,495 613 9 1,050 16 437 7 111-193 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 235 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MI SCELLAEOUS POWER PLANT EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 126.172 3,130 2 400 0 2,730-2 - 1997 68,078 637 1 290 0 347-1- 1998 22,408 22,408- 1999 9,625 25,995- 270-0 25,995 270 2000 62,065 3,587 6 0 3,587-6 - 2001 3,938 0 0 0 2002 15,236 0 0 0 2003 26,482 0 0 0 2004 34,217 0 0 0 2005 28,652 0 0 0 2006 2007 2,954 0 0 0 2008 10,020 0 0 0 2009 163,821 0 0 0 2010 67,941 0 0 0 TOTAL 1,111,058 38,219 3 37,101 3 1,118-0 THREE-YEAR MOVING AVERAGES 54-56 858 0 108 13 108 13 55-57 1,885 0 108 6 108 6 56-58 1,508 0 225 15 225 15 57-59 2,138 3 0 265 12 262 12 58~60 1,056 3 0 308 29 305 29 59-61 809 3 0 84 10 81 10 60-62 1,594 0 937 59 937 59 61-63 1,489 0 893 60 893 60 62-64 1,679 46 3 893 53 847 50 63-65 292 46 16 17 6 29-10- 64-66 1.033 46 4 733 71 687 67 65-67 1,898 0 737 39 737 39 66-68 1.848 0 720 39 720 39 67-69 2,396 0 12 0 12 0 68-70 1,775 0 75 4 75 4 69-71 2,152 0 75 3 75 3 70-72 2,042 8 0 500 24 492 24 71-73 1.764 8 0 433 25 425 24 72 -74 2,033 8 0 433 21 425 21 73 -75 1,000 9 1 0 9-1 - 74-76 1.620 36 2 81 5 45 3 75 -77 1/200 36 3 220 18 184 15 ~i-194 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 236 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 30,818 140 0 589 2 450 1 77-79 30,764 113 0 512 2 399 178-80 32,716 113 0 373 1 260 179-81 3,397 0 3 0 3 0 80- 82 3,076 6,861 223 839 27 6,022-196- 81- 83 11,186 6,943 62 903 8 6,040-54 -82-84 12,425 6,943 56 1,020 8 5,924 -48 - 83 - 85 28,585 82 0 421 1 338 184-86 23,2B1 68 0 484 2 415 2 85-87 25.059 93 0 834 3 741 3 86 -88 11,910 198 2 663 6 464 487-89 8,002 2,116 26 667 8 1.448-18- 88-90 8,782 2,091 24 201 2 1,891-22 - 89-91 38,806 2.061 5 275 1 1,786-5-90-92 50,744 247 0 1,569 3 1,322 3 91- 93 53.125 1.589 3 6,285 12 4.696 992-94 36,756 1,871 5 6,442 18 4,571 1293-95 25,908 1,904 7 5.367 21 3,463 13 94-96 61,343 1,605 3 783 1 822 -1-95-97 66,915 1,460 2 580 1 880-1-96-98 64,750 8.725 13 230 0 8,495-13- 97-99 25,901 983 -4 -97 0 1,080 4 98- 00 23,897 0 0 099-01 25,209 7.469-30-0 7,469 3000-02 27,080 1,196 4 0 1,196 -4- 01-03 15,219 0 0 0 02 - 04 25,312 0 0 003-05 29,784 0 0 0 04- 06 20,957 0 0 005-07 10,536 0 0 006-08 4,325 0 0 007-09 58,932 0 0 0 08-10 80,594 0 0 0 FIVE-YEAR AVERAGE 06 - 10 48,947 0 0 0 ~i-195 Exhibit NO.1 Case No. IPC-E-12..8 J. Spanos, IPC Page 237 of 491 IDAHO POWER COMPANY ACCOUNT 350.20 LAND RIGHTS AND EASEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 130,313 676 1 0 676-1- 1997 1998 1999 2000 17,570 0 0 0 2001 7,728 0 0 0 2002 2003 2004 2005 13,026 0 0 0 2006 2007 2008 2009 2010 TOTAL 168.636 676 0 0 676-0 THREE-YEAR MOVING AVERAGES 96-98 43,438 225 1 0 225-1- 97-99 98-00 5,857 0 0 0 99-01 8,433 0 0 0 00-02 8,433 0 0 0 01-03 2,576 0 0 0 02-04 03-05 4.342 0 0 0 04-06 4,342 0 0 0 05-07 4,342 0 0 0 06-08 07-09 08-10 FIVE-YEAR AVERAGE 06-10 111-196 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 238 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AN IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT peT AMOUNT PCT 1956 768 0 289 38 289 38 1957 1,672 0 1,572 94 1,572 94 1958 2,277 21 1 1,778 78 1,757 77 1959 52 13 39- 1960 1,111 257 23 11 1 246-22 - 1961 3,295 177 5 1,503 46 1,326 40 1962 1,281 1,317 103 43 3 1,274-99- 1963 837 322 38 634 76 312 37 1964 6,760 704 10 107 2 597-9- 1965 2,403 1,183 49 0 1,183 -49- 1966 9,768 2,413 25 151 2 2.262-23 - 1967 8,994 861 10 123 1 738-8 - 1968 6,324 1,669 26 626 10 1.043-16- 1969 4,250 708 17 1,139 27 431 10 1970 1,534 112 7 261 17 149 10 1971 3.058 1,706 56 1,788 58 82 3 1972 25,513 1,684 7 6,335 25 4,651 18 1973 3,053 4,655 152 22 1 4,633 -152 - 1974 811 908 112 375 46 533 -66- 1975 1,652 0 50 3 50 3 1976 549 4.609 840 0 4.609-840- 1977 28,162 2.334 8 8.052 29 5,718 20 1978 48.779 42,208 87 0 42,208-87 - 1979 19,018 0 13,693 72 13,693 72 1980 11,264 11.453 102 520 5 10,933-97- 1981 14,701 27.830 189 302 2 27,528-187- 1982 29.659 0 0 0 1983 65.464 3,331 5 947 1 2,384 -4 - 1984 12,694 29,379 231 4,076 32 25,303-199- 1985 71,811 35,226 49 2,806 4 32,420-45- 1986 578 0 0 0 1987 5 5 1988 10,371 4,555 44 158 2 4,397 -42 - 1989 33.565 10,337 31 0 10,337-31- 1990 7,015 4,387 63 1 0 4,386-63- 1991 34,745 15,899 46 0 15.899-46- 1992 19.632 25,479 130 0 25,479-130 - 1993 32,165 7.172 22 0 7.172 -22 - 1994 7,244 16,584 229 77 1 16,507-228 - 1995 10,620 10,620- 1996 10,883 2.773 25 692 -6-3,466-32 - 1997 41,528 44,258 107 225-1-44,483-107 - ~i-197 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 239 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AN IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT peT 1998 18,034 1,217 16,817- 1999 47.125 35,590 76 969 2 34.621-73 - 2000 7,477 3.485 47 870 12 2,615-35 - 2001 16,575 4.210 25 6.582 40 2,372 14 2002 117,319 5,941 5 753 1 5,188 -4 - 2003 49,423 139 0 4,625 -9-4,764-10- 2004 28.117 26,895 96 2,500 9 24,395-87- 2005 11,613 1.780 15 331 3 1,449-12 - 2006 75,549 59,239 78 7,165 9 52,074 -69- 2007 54,045 3,991 7 96 0 3,894 -7- 2008 21,264 8,929 42 23,633 ILL 14.704 69 2009 123,502 20,676 17 3,050 2 17,626-14- 2010 220,357 148,123 67 33,686 15 114,437-52 - TOTAL 1,357.555 654.216 48 122,767 9 531,449-39- THREE-YEAR MOVING AVERAGES 56-58 1.572 7 0 i,213 77 1.206 77 57-59 1.316 24 2 1,121 85 1,097 83 58-60 1,129 no 10 601 53 491 43 59-61 1,469 162 11 509 35 347 24 60-62 1,896 584 31 519 27 65-3 - 61-63 1.804 605 34 727 40 121 7 62-64 2,959 781 26 261 9 520-18 - 63-65 3,333 736 22 247 7 489-15- 64-66 6,310 1,433 23 86 1 1,347-21 - 65-67 7,055 1,486 21 91 1 1,394 -20- 66-68 8,362 1,648 20 300 4 1,348-16- 67-69 6,523 1,079 17 629 10 450-7 - 68-70 4.036 830 21 675 17 154 -4- 69-71 2,947 842 29 1,063 36 221 7 70-72 10.035 1,167 12 2,795 28 1,627 16 71-73 10,541 2,682 25 2,715 26 33 0 72-74 9,792 2,416 25 2,244 23 172-2 - 73 -75 1,839 1,854 101 149 8 1, 705-93 - 74 -76 1,004 1,839 183 142 14 1, 697-169- 75-77 10,121 2,314 23 2,701 27 386 4 76-78 25, 830 16,384 63 2,684 10 13,700-53 - 77-79 31,986 14,847 46 7,248 23 7,599-24 - 78-80 26,354 17,887 68 4,738 18 13,149-50- 79-81 14,994 13,094 87 4,838 32 8,256-55- 111-198 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 240 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 80-82 18,541 13,094 71 274 1 12,820-69- 81-83 36,608 10,387 28 416 1 9.971-27- 82-84 35,939 10,903 30 1,674 5 9,229-26- 83 -85 49,990 22,645 45 2,610 5 20,036-40- 84-86 28,361 21,535 76 2,294 8 19,241-68- 85-87 24,130 11,742 49 937 4 10,805-45- 86-88 3.650 1,518 42 54 1 1,464-40- 87-89 14,645 4,964 34 54 0 4,910-34- 88- 90 16,984 6,426 38 53 0 6.373-38- 89-91 25.108 10,208 41 0 10,207-41- 90-92 20,464 15,255 75 0 15.255-75- 91-93 28,847 16,183 56 0 16,183 -56- 92 -94 19,680 16,412 83 26 0 16,386-83 - 93-95 13,136 11,459 87 26 0 11.433-87- 94-96 6,042 9,992 165 205-3-10.198-169-95-97 17,470 19,217 110 306-2 -19,523-112- 96-98 17,470 21,688 124 100 1 21,589-124 - 97-99 29,551 32,627 110 654 2 31,974-108- 98 -00 18,201 19,036 ios 1,019 6 18,018-99- 99-01 23.726 14,429 61 2,807 12 11,621-49- 00-02 47,124 4,546 10 2,735 6 1,810-4 - 01-03 61,106 3,430 6 904 1 2.527-4 - 02-04 64,953 10,992 17 457-1-11,449-18- 03 -05 29.718 9,605 32 598-2-10,203-34 - 04-06 38,426 29,305 76 3.332 9 25,973-68- 05-07 47,069 21,670 46 2.531 5 19,139-41- 06-08 50,286 24,053 48 10,298 20 13,755-27- 07-09 66,270 11,198 17 8,926 13 2,272-3 - 08-10 121,708 59,243 49 20,123 17 39,120-32- FIVE-YEAR AVERAGE 06-10 98,943 48,192 49 13.526 14 34,666-35- 111-199 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 241 of 491 IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT SUMMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 20 1 5 91 455 90 450 1955 912 202 22 663 73 461 51 1956 30,633 883 3 1, 029 3 146 0 1957 59,300 6 0 1.017 2 1,011 2 1958 23,646 631 3 16,338 69 15,707 66 1959 9,748 1,129 12 6,084 62 4,955 51 1960 5,959 1,864 31 4,689 79 2,825 47 1961 37,385 973 3 22,098 59 21,125 57 1962 90.238 4,141 5 10,822 12 6,681 7 1963 21,489 691 3 3,986 19 3,295 15 1964 16,081 1.188 7 1,343 8 155 1 1965 21.527 1,119 5 2,215 10 1,096 5 1966 101,238 2,687 3 10,435 10 7,748 8 1967 86,027 2.964 3 4,388 5 1,424 2 1968 58,817 2,715 5 2,723 5 8 0 1969 24,586 3,095 13 4,099 17 1,004 4 1970 102,637 3,873 4 32,333 32 28,460 28 1971 31,169 4,005 13 21,332 68 17,327 56 1972 238,443 5,028 2 80,521 34 75,493 32 1973 99,945 16.759 17 16.190 16 569-1- 1974 98,126 4,731 5 41.052 42 36,321 37 1975 76,749 9,723 13 13,075 17 3,352 4 1976 70,576 18,191 26 7,608 11 10.583-15- 1977 136,767 14,927 11 65,548 48 50.621 37 1978 329,879 59,149 18 19.308 6 39,841-12- 1979 148,412 15,449 10 102,241 69 86 ¡ 792 58 1980 171,033 17,446 10 34.863 20 17,417 10 1981 226,033 11.005 5 37,262 16 26 ¡ 257 12 1982 181,315 13.139 7 29,825 16 16,686 9 1983 313,263 0 30,154 10 30.154 10 1984 152,209 44,539 29 11.518 8 33,021-22 - 1985 126.999 19,187 15 760 1 18,427-15- 1986 164,344 5,332 3 3,840 2 1,492 -1- 1987 27,936 4,497 16 1,395 5 3,102 -11- 19B8 201,930 0 288 0 288 0 1989 203,179 36,024 18 109,758 54 73,734 36 1990 96,055 16,771 17 5,609 6 11,162-12 - 1991 342,456 60,550 18 4,366 1 56,184-16 - 1992 782,968 134,174 17 2,164 0 132,010-17 - 1993 801,699 66,609 8 4,123 1 62,486-8- 1994 158,764 73,664 46 6,336 4 67,328-42 - 1995 1,669,806 109,449 7 99,616 6 9,833 -1- 111-200 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 242 of 491 IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT SUMMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 1,108,518 127,143 11 23,559 2 103.584-9- 1997 3.436,072 233,112 7 33,264 1 199,848-6 - 1998 154,549 344,409 223 13,797 9 330,611-214- 1999 1,257.541 21,944 2 12,203 1 9,741-1- 2000 1,381,201 69,343 5 17,260 1 52,084-4- 2001 1.229.694 90,065 7 38,133 3 51,932-4- 2002 3,683,450 236,245 6 677,410 18 441, 165 12 2003 519,791 378,219 73 39,963 8 338,256-65- 2004 1,332,399 540,685 41 60,904 5 479,782-36- 2005 5,258,014 521,908 10 35,003 1 486,905-9- 2006 1,644,354 315,105 19 86,926 5 228.179-14- 2007 2,177,756 407,488 19 175.475 8 232,013-11- 2008 2,099,126 287,072 14 241,378 11 45,694-2 - 2009 1,084,667 46,084 4 12,165-1-58,249-5- 2010 877.677 24,316 3 3,358 0 20,958-2- TOTAL 34,785,108 4,431.648 13 2,319,572 7 2.112,076-6 - THREE-YEAR MOVING AVERAGES 54-56 10,522 362 3 594 6 232 2 55-57 30,282 364 1 903 3 539 2 56-58 37,860 507 1 6,128 16 5,621 15 57-59 30.898 589 2 7.813 25 7,224 23 58-60 13,118 1.208 9 9,037 69 7,829 60 59-61 17,697 1,322 7 10,957 62 9,635 54 60-62 44,527 2.326 5 12,536 28 10,210 23 61-63 49,704 1,935 4 12.302 25 10,367 21 62-64 42,603 2.007 5 5,384 13 3,377 8 63-65 19,699 999 5 2.515 13 1,515 8 64-66 46,282 1,665 4 4,664 10 3,000 665-67 69,597 2,257 3 5,679 8 3.423 5 66-68 82,027 2.789 3 5,849 7 3,060 4 67-69 56,477 2,925 5 3,737 7 812 1 68 -70 62,013 3,228 5 13,052 21 9.824 16 69-71 52,797 3.658 7 19,255 36 15,597 30 70-72 124.083 4,302 3 44,729 36 40.427 33 71-73 123,186 8,597 7 39,348 32 30,750 25 72-74 145,505 8,839 6 45,921 32 37,082 25 73 -75 91,607 10,404 11 23,439 26 13,035 14 74 -76 81,817 10,882 13 20,578 25 9,697 12 75 -77 94,697 14.280 15 28,744 30 14,463 15 ~i-201 Exhibit No. 1 Case No. IPC-E~12-o8 J. Spanos, IPC Page 243 of 491 IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUN PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 179,074 30,756 17 30,821 17 66 0 77-79 205,019 29,842 15 62,366 30 32,524 16 78-80 216,441 30,681 14 52,137 24 21,456 10 79-81 181,826 14,633 8 58,122 32 43,489 24 80-82 192,794 13,863 7 33.983 18 20.120 10 81- 83 240,204 8,048 3 32,414 13 24,366 10 82-84 215,596 19,226 9 23,832 11 4,606 2 83-85 197,490 21,242 11 14,144 7 7,098-4 - 84-86 147,851 23,019 16 5,373 4 17,647-12 - 85-87 106,426 9,672 9 1,998 2 7,674-7- 86-88 131,403 3,276 2 1,841 1 1,435-1- 87-89 144,348 13,507 9 37,147 26 23,640 16 88-90 167,055 17,598 11 38.552 23 20.953 13 89-91 213.897 37.782 18 39,911 19 2,129 1 90-92 407,160 70.498 17 4,046 1 66,452-16- 91-93 642,374 87, ILL 14 3,551 1 83,560-13- 92-94 581,144 91.482 16 4,208 1 87,275-15- 93 -95 876,756 83.241 9 36,692 4 46,549-5- 94-96 979,029 103,419 11 43,170 4 60,248-6- 95-97 2,071.465 156,568 8 52,146 3 104,422-5 - 96-98 1,566,380 234,888 15 23,540 2 211,348-13 - 97-99 1,616,054 199.822 12 19.755 1 180,067-11- 98-00 931,097 145,232 16 14.420 2 130,812-14 - 99-01 1.289.479 60,451 5 22,532 2 37,919-3 - 00-02 2,098.115 131,884 6 244,268 12 112,383 5 01-03 1,810,978 234,843 13 251,835 14 16,992 1 02-04 1,845,213 385.050 21 259,425 14 125,624-7- 03 -05 2,370,068 480,270 20 45,290 2 434,981-18- 04-06 2,744.923 459,233 17 60,944 2 398,288-15 - 05-07 3,026,708 414,833 14 99,135 3 315,699-10- 06-08 1,973,745 336,555 17 167,926 9 168,629-9- 07-09 1.787,183 246,881 14 134,896 8 111,985-6- 08-10 1,353,823 119,157 9 77,524 6 41,634-3 - FIVE-YEAR AVERAGE 06-10 1,576.716 216,013 14 98,994 6 117,019-7 - ~i-202 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 244 of 491 IDAHO POWER COMPANY ACCOUNT 354.00 TOWERS AN FIXTUES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1972 3,939 3,710 94 1,558 40 2.152-55- 1973 4,358 576 13 0 576-13- 1974 14,110 1,209 9 1.551 11 342 2 1975 1976 353 96 257- 1977 1.372 563 41 0 563-41- 1978 1979 1980 708 708 1981 29,473 10,720 36 12,998 44 2,278 8 1982 1983 1984 1985 1986 769 0 0 0 1987 1988 1989 1990 9,767 9.767- 1991 6.431 186 3 0 186-3 - 1992 3,930 3,930- 1993 425 425- 1994 11,682 10,549 90 0 10,549-90- 1995 2,420 2,420- 1996 652-606-46 1997 769 5,824 758 0 5,824-758- 1998 11 11- 1999 11-11 2000 476 5,395 132 28 5,263- 2001 5.425 1.124 4,301- 2002 2003 69,846 10,577-15-1,185-2-9.392 13 2004 80,221 21,547 27 77-0 21,624 -27 - 2005 67,152 32,596 49 4,237 6 28,359-42 - 2006 2007 56,209 30,671-55-10 0 30.681 55 2008 64,506 18,984 29 7.084 11 11,900-18- 2009 2oio TOTAL 411,313 92,279 22 27,630 7 64.649-16 - ~i-203 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 245 of 491 IDAHO POWER COMPANY ACCOUNT 354.00 TOWERS AND FIXTURES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 72-74 7.469 1.832 25 1,036 14 795-11- 73-75 6,156 595 10 517 8 78-1- 74-76 4.703 521 11 549 12 28 1 75-77 457 305 67 32 7 273 -60- 76-78 457 305 67 32 7 273 -60- 77-79 457 188 41 0 188-41- 78- 80 236 236 79-81 9.824 3,573 36 4,569 47 995 10 80-82 9,824 3,573 36 4,569 47 995 10 81-83 9,824 3.573 36 4,333 44 759 8 82-84 83 - 85 84 - 86 256 0 0 0 85- 87 256 0 0 0 86 - 88 256 0 0 0 87-89 88- 90 3,256 3,256- 89-91 2,144 3,318 155 0 3,318-155- 90-92 2,144 4,628 216 0 4,628-216- 91-93 2.144 1,514 71 0 1,514-71- 92-94 3,894 4,968 128 0 4,968-128- 93-95 3.894 4.465 115 0 4,465-115- 94-96 3,894 4.106 105 202 -5-4,308 -111- 95-97 256 2.531 988 202 -79-2,733- 96-98 256 1,728 674 202 -79-1,930-753- 97-99 256 1,941 758 0 1,941-758- 98-00 159 1,798 44 28 1,754 - 99-01 159 3,603 418 264 3,184 - 00-02 159 3,607 418 264 3.188- 01-03 23,282 1,717-7-20-0 1,697 7 02-04 50.022 3,657 7 421-1-4,077 -8- 03 - 05 72,406 14,522 20 992 1 13,530-19- 04 -06 49,124 18,048 37 1,387 3 16,661-34- 05 -07 41,120 642 2 1,416 3 774 2 06 -08 40,239 3,896-10-2.365 6 6,260 16 07 -09 40,239 3,896-10-2,365 6 6,260 16 08- 10 21,502 6,328 29 2,361 11 3,967 -18- FIVE-YEAR AVERAGE 06-10 24,143 2,337-10-1,419 6 3,756 16 ~i-204 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos, IPC Page 246 of 491 IDAHO POWER COMPANY ACCOUNT 355.00 POLES AND FIXTURES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 49,112 15,076 31 9,792 20 5,284-11- 1955 23,016 8,166 35 6,407 28 1,759-8- 1956 44,190 18,417 42 10,643 24 7,774-18 - 1957 38,135 21,314 56 9,298 24 12,016-32 - 1958 109,197 38,823 36 25,958 24 12.865-12 - 1959 28.402 17,578 62 10.111 36 7,467-26 - 1960 43.035 29,490 69 6.991 16 22,499-52- 1961 19,851 12,179 61 8,131 41 4,048-20- 1962 46,417 24,157 52 10,637 23 13,520-29- 1963 46.606 27,628 59 11.687 25 15,941-34 - 1964 45,107 20.160 45 8,066 18 12,094-27- 1965 50,386 16,640 33 11,372 23 5,268-10- 1966 56,087 24,569 44 11,682 21 12,887-23 - 1967 154,402 59,337 38 13,893 9 45,444-29- 1968 63,038 42,843 68 10,238 16 32,605-52- 1969 44.192 30,251 68 5,125 12 25,126-57- 1970 67,944 31,811 47 3,836 6 27,975-41- 1971 43,439 48,932 113 5,985 14 42,947-99- 1972 35,659 35.407 99 3.621 10 31,786-89- 1973 51,727 29,965 58 10,891 21 19,074-37- 1974 60,210 33.965 56 21,377 36 12.588-21- 1975 318,477 97,701 31 35,831 11 61,870-19- 1976 124,974 64,776 52 26.021 21 38.755-31- 1977 61,839 60.203 97 35,349 57 24,854-40- 1978 40,328 41,072 102 5.151 13 35,921-89- 1979 31,984 64,309 201 10,946 34 53,363-167- 1980 317,784 211.097 66 11,798 4 199,299-63 - 1981 134,058 284.181 212 288,930 216 4.749 4 1982 69,586 54,461 78 24,257 35 30,204-43 - 1983 165,222 309,618 187 72,024 44 237,594-144- 1984 72,721 358,947 494 22,162 30 336,785-463 - 1985 229,056 482,804 211 39,138 17 443,666-194- 1986 175,383 253,707 145 11,671 7 242,036-138- 1987 113,224 234,997 208 20,319 18 214,678-190- 1988 118,475 115,982 98 13,768 12 102,214-86- 1989 94,641 133,828 141 37,707 40 96,121-102- 1990 164,981 172,568 105 4,430 3 168,138-102- 1991 164.247 403.544 246 28,292 17 375,252-228- 1992 100,686 438,182 435 5,604 6 432,578-430 - 1993 300,827 294,603 913 4,699 2 289,904-96- 1994 226,897 388,338 171 6,411 3 381,927-168- 1995 326,627 194,239 59 40,410 12 153,829-47 - ~i-205 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 247 of 491 IDAHO POWER COMPANY ACCOUN 355.00 POLES AND FIXTURES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 595,748 734,842 123 27,248-5-762,090-128- 1997 422,225 406,604 96 26,023-6-432,627-102 - 1998 181.604 485.753 267 21,041 12 464,712-256- 1999 96,600 131,583 136 15,875 16 115,709-120- 2000 894,409 338,151 38 44,919 5 293,232-33 - 2001 302,088 171,875 57 21,820 7 150,054-50- 2002 212,061 115,004 54 7,985 4 107,019-50 - 2003 316,643 126,094 40 6,312 2 119,782-38 - 2004 309,685 252,844 82 29,774 10 223.069-72 - 2005 568,129 234,266 41 5,014-1-239,280-42 - 2006 310,268 379,609 122 160,224 52 219,385-71- 2007 375,227 1.146,258 305 484,688 129 661,570-176- 2008 555,010 814,221 147 87,235 16 726,985-131- 2009 350,520 391.299 112 40,178 11 351,121-100- 2010 490,212 515,042 105 59,987 12 455,055-93 - TOTAL 10,452,598 11,489,309 110 1,882.413 18 9,606,896-92- THREE-YEAR MOVING AVERAGES 54-56 38,773 13,886 36 8,947 23 4,939-13 - 55-57 35,114 15,966 45 8,783 25 7,183 -20- 56-58 63,841 26,185 41 15,300 24 10,885-17- 57 -59 58,578 25,905 44 15.122 26 10,783-18- 58-60 60,211 28,630 48 14,353 24 14.277-24 - 59-61 30,429 19,749 65 8,411 28 11.338-37- 60-62 36,434 21,942 60 8,586 24 13,356-37 - 61-63 37,625 21,321 57 10,152 27 11,170-30- 62-64 46.043 23,982 52 10,130 22 13,852-30- 63-65 47,366 21,476 45 10,375 22 11,101-23- 64-66 50.527 20,456 40 10,373 21 10,083-20- 65-67 86,958 33,515 39 12.316 14 21,200-24- 66-68 91,176 42.250 46 11,938 13 30,312-33 - 67-69 87,211 44,144 51 9.752 11 34,392 -39- 68-70 58,391 34,968 60 6,400 11 28,569-49- 69-71 51,858 36,998 71 4,982 10 32,016-62 - 70-72 49,014 38,717 79 4,481 9 34,236-70- 71-73 43,608 38,101 87 6,832 16 31,269-72- 72 -74 49,199 33,112 67 11.963 24 21.149-43 - 73 -75 143,471 53.877 38 22,700 16 31,177-22 - 74 -76 167,887 65,481 39 27,743 17 37.738-22 - 75-77 168,430 74,227 44 32,400 19 41.826-25 - ~i-206 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 248 of 491 IDAHO POWER COMPANY ACCOUNT 355.00 POLES AN FIXTURES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 75,714 55,350 73 22.174 29 33,177-44-77-79 44,717 55,195 123 17,149 38 38,046-85 - 78-80 130.032 105,493 81 9,298 7 96.194-74 - 79-81 161,275 186,529 116 103,891 64 82.638-51- 80- 82 173.809 183.246 105 108,328 62 74,918-43 - 81-83 122,955 216,087 176 128,404 104 87,683-71- 82-84 102.510 241.009 235 39,481 39 201,528-197- B3-85 155,666 383,790 247 44,441 29 339,348-218- 84-86 159,053 365,153 230 24/324 15 340,829-214- 85-87 172,554 323,836 188 23,709 14 300.127-174- 86- 88 135,694 201,562 149 15,253 11 186.309-137- 87-89 108,780 161.602 149 23,931 22 137,671-127- 88-90 126,032 140,793 112 18,635 15 122,158-97 - 89-91 141,290 236,647 167 23.476 17 213,170-151- 90- 92 143/305 338,098 236 12/775 9 325,323-227 - 91~93 188,587 378/776 201 12/865 7 365,911-194- 92-94 209,470 373,708 178 5/571 3 368,136-176- 93 -95 284,784 292,393 103 17.173 6 275,220-97- 94-96 383,091 439,140 115 6/524 2 432,615-113- 95-97 448,200 445,229 99 4.287-1-449/515-100- 96-98 399/859 542,400 136 10.743-3 -553.143-138- 97-99 233,476 341.313 146 3.631 2 337,683-145 - 98-00 390,871 318.496 81 27.278 7 291.218-75- 99-01 431,032 213,870 50 27,538 6 186,332-43 - 00-02 469,519 208.343 44 24/908 5 183.435-39- 01-03 276,931 137,658 50 12/039 4 125,618-45 - 02-04 279,463 164,647 59 14,691 5 149,957-54- 03-05 398,152 204/401 51 10/357 3 194,044-49- 04-06 396.027 288/906 73 61,661 16 227,245-57 - 05-07 417/875 586,711 140 213,299 51 373,412-89- 06-08 413/502 780,029 189 244,049 59 535/980-130 - 07-09 426/919 783,926 184 204,034 48 579.892-136 - 08-10 465.248 573,520 123 62,467 13 511,054-110- FIVE-YEAR AVERAGE 06 -10 416,248 649,286 156 166,462 40 482,823-116- ~i-207 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 249 of 491 IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AND DEVICES 8.UMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 35,983 5,197 14 26,632 74 21,435 60 1955 29,978 3,073 10 13,532 45 10,459 35 1956 42,685 6,883 16 19,946 47 13,063 31 1957 39,849 14,278 36 24,577 62 10,299 26 1958 124,280 22,019 18 48,524 39 26,505 21 1959 25,962 5,527 21 14,493 56 8,966 35 1960 98,426 19,532 20 122,714 125 103,182 105 1961 79,510 12,664 16 49,579 62 36.915 46 1962 63,985 17,700 28 37,773 59 20,073 31 1963 82,667 23,501 28 49,214 60 25,713 31 1964 28,549 7,092 25 24,503 86 17,411 61 1965 49,873 12,588 25 27,830 56 15,242 31 1966 63,442 13,994 22 33,896 53 19,902 31 1967 176,943 31,542 18 111,956 63 80,414 45 1968 62,255 14,612 23 36,509 59 21,897 35 1969 40,733 14,253 35 35,138 86 20,885 51 1970 82,366 6,386 8 6,386 8 0 1971 43,847 43.327 99 113,228 258 69,901 159 1972 42,660 48,002 113 17,844 42 30,158-71- 1973 46,584 3,353 7 21,535 46 18,182 39 1974 99,532 25,537 26 42,766 43 17,229 17 1975 99,462 83.287 84 147,372 148 64,085 64 1976 169,209 59,958 35 150,729 89 90,771 54 1977 107,358 54,479 51 0 54,479-51- 1978 47,030 12,275 26 23,364 50 11,089 24 1979 34,916 13,395 38 21,293 61 7,898 23 1980 67.909 38,439 57 33,388 49 5,051-7- 1981 106,346.76.735 72 142,159 134 65,424 62 1982 57.799 73,227 127 50,778 88 22,449-39- 1983 107,927 67.352 62 67,191 62 161-0 1984 32,325 133,413 413 36,112 112 97,301-301- 1985 103,635 23,900 23 35,455 34 11,555 11 1986 36,938 27,427 74 20,983 57 6,444-17- 1987 53,727 62,732 117 86,261 161 23,529 44 1988 69,934 56.856 81 40,660 58 16,196-23 - 1989 89,019 52,356 59 19,747 22 32,609-37 - 1990 28,001 27,824 99 27,027 97 797-3 - 1991 131,873 91.520 69 50,730 38 40,790-31- 1992 45,997 110,876 241 26,029 57 84,847-184 - 1993 141,816 iiO,974 78 20,826 15 90,148-64 - 1994 153,780 197,407 128 14,561 9 182,846-119- 1995 318,905 138,201 43 42,848 13 95,353-30 - ~i-208 Exhibit No. 1 Case No. IPC.E-12-Q8 J. Spanos, IPC Page 250 of 491 IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AND DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 408,641 349,676 86 32.150 8 317,526-78- 1997 363,918 184,118 51 19,353-5-203,471-56- 1998 728,285 139,891 19 11,172 2 128.718-18- 1999 105,266 129,478 123 8,620 8 120,859-115- 2000 346,235 225,976 65 34,149 10 191.827-55- 2001 261,006 168,416 65 20,169 8 148,247-57 - 2002 639,468 132,394 21 7,677 1 124,717-20- 2003 259.018 161.821 62 9,847 4 151.973-59- 2004 184,774 332,964 180 46,053 25 286,912-155- 2005 1,181,484 334,333 28 15,963 1 318,370-27- 2006 223,382 386,743 173 229,412 103 157,330-70- 2007 137,462 1,335,946 972 672,647 489 663,299-483 - 2008 802,568 619,174 77 67,192 8 551.981-69- 2009 431,505 263,180 61 24,939 6 238,241-55- 2010 524,015 632,963 121 49,751 9 583.212-111- TOTAL 9,961,041 7,260,766 73 3.146,477 32 4,114,289-41- THREE-YEAR MOVING AVERAGES 54-56 36,215 5,051 14 20,037 55 14,986 41 55-57 37,504 8,078 22 19,352 52 11.274 30 56-58 68,938 14,393 21 31,016 45 16,622 24 57-59 63,364 13,941 22 29.198 46 15,257 24 58-60 82,889 15,693 19 61.910 75 46,218 56 59-61 67,966 12,574 19 62,262 92 49,688 73 60-62 80,640 16,632 21 70,022 87 53,390 66 61-.63 75.387 17.955 24 45.522 60 27,567 37 62-64 58,400 16,098 28 37.163 64 21.066 36 63-65 53,696 14,394 27 33,849 63 19.455 36 64-66 47,288 11,225 24 28,743 61 17,518 37 65-67 96,753 19,375 20 57,894 60 38,519 40 66-68 100,880 20,049 20 60.787 60 40,738 40 67-69 93,310 20,136 22 61,201 66 41,065 44 68-70 61,785 11,750 19 26,011 42 14,261 23 69-71 55,649 21,322 38 51,584 93 30,262 54 70-72 56,291 32,572 58 45,819 81 13,248 24 71-73 44,364 31,561 71 50,869 115 19,308 44 72 -74 62.925 25,631 41 27,382 44 1,751 3 73 -75 81,859 37,392 46 70,558 86 33,165 41 74 -76 122,734 56 t 261 46 113,622 93 57,362 47 75-77 125,343 65,908 53 99,367 79 33,459 27 111-209 Exhibit No. 1 Case No. IPC-E-12"'08 J. Spanos, IPC Page 251 of 491 IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AND DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUN PCT THREE-YEAR MOVING AVERAGES 76 -78 107,866 42,237 39 58,031 54 15.794 15 77-79 63,101 26,716 42 14,886 24 11,831-19- 78-80 49,952 21,3~0 43 26,015 52 4,645 9 79- 81 69,724 42,856 61 65,613 94 22,757 33 80-82 77,351 62,800 81 75,442 98 12,641 16 81- 83 90,691 72,438 80 86,709 96 14.271 16 82-84 66,017 91,331 138 51,360 78 39.970-61- 83 -85 81,296 74,888 92 46,253 57 28,636-35- 84 - 86 57,633 61,580 107 30,850 54 30,730-53 - 85-87 64,767 38,020 59 47,566 73 9,547 15 86 - 88 53,533 49,005 92 49,301 92 296 1 87- 89 70,893 57,315 81 48.889 69 8,425-12 - 88-90 62,318 45,679 73 29,145 47 16.534 -27 - 89-91 82.964 57,233 69 32,501 39 24,732-30- 90-92 68,624 76,740 112 34,595 50 42,145-61- 91-93 106,562 104.457 98 32.528 31 71.928-67 - 92-94 113.864 139,752 123 20,472 18 119.280-105 - 93 -95 204,834 148,861 73 26.078 13 122,782-60- 94-96 293,775 228,428 78 29.853 10 198,575-68- 95-97 363,821 223,998 62 18,548 5 205,450-56- 96- 98 500,281 224.562 45 7,990 2 216,572-43 - 97 - 99 399.156 151,162 38 146 0 151.016-38- 9B-OO 393,262 165,115 42 17,980 5 147,134-37- 99-01 237.502 174,623 74 20,979 9 153,644-65 - 00-02 415,570 175,595 42 20,665 5 154,930-37- 01-03 386,497 154,210 40 12,564 3 141,646-37- 02 -04 361,087 209,060 58 21,193 6 187.867-52 - 03 -05 541,759 276,373 51 23,955 4 252,418-47- 04 -06 529,880 351,347 66 97.143 18 254,204-48- 05-07 514,109 685,674 133 306,008 60 379,666-74 - 06-08 387,804 780,621 201 323.084 83 457,537-118- 07-09 457,178 739.433 162 254,926 56 484,507-106 - 08-10 586,029 505,106 86 47,294 8 457,812-78 - FIVE-YEAR AVERAGE 06-10 423,786 647,601 153 208,788 49 438.813-104 - ~i-210 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 252 of 491 IDAHO POWER COMPANY ACCOUNT 361.00 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 7,832 1,308 17 3,191 41 1.883 24 1955 15,610 1,661 11 5.137 33 3.476 22 1956 9,187 1,740 19 2,329 25 589 6 1957 7.967 1,250 16 2,045 26 795 10 1958 17,906 3,787 21 1,845 10 1,942-11- 1959 6,737 1,040 15 984 15 56-1- 1960 4,577 834 18 446 10 388~8 - 1961 8,829 1,266 14 986 11 280-3 - 1962 21,234 11,560 54 4,083 19 7,477-35- 1963 8,357 2,621 31 375 4 2,246-27- 1964 15,621 5,353 34 2,060 13 3,293 -21- 1965 23,468 3,262 14 1,683 7 1,579-7 - 1966 43,579 8,092 19 2,535 6 5.557-13 - 1967 63,673 13,081 21 1,733 3 11,348-18- 1968 41,077 10,034 24 3,346 8 6,688-16 - 1969 21,087 5,405 26 2,892 14 2,513-12 - 1970 2,340 5,417 3,077 1971 38,409 4,515 12 2,826 7 1.689-4 - 1972 37.516 13,432 36 5,152 14 8,280-22 - 1973 30.393 12,093 40 1,310 4 10,783 -35 - 1974 30,797 13.556 44 6,214 20 7,342 -24- 1975 53,377 17,320 32 5,424 10 11,896-22 - 1976 58,614 13,060 22 3,539 6 9,521-16- 1977 40,687 28,145 69 2,187 5 25.958-64 - 1978 94,738 62,243 66 4,305 5 57,938-61- 1979 48,518 79,847 165 825 2 79,022-163 - 1980 42.787 18,487 43 1,791 4 16,696-39- 1981 52,915 48,088 91 3.790 7 44,298-84- 1982 53,681 38,186 71 4,007 7 34,179-64- 1983 71,264 79,151 111 6,813 10 72,338-102 - 1984 27,120 12,901 48 1,993 7 10,908-40- 1985 103,868 100,634 97 4,583 4 96,051-92 - 1986 30,991 40,693 131 0 40,693-131- 1987 78,685 15,690 20 7.047 9 8,643-11- 1988 49,024 10,830 22 0 10,830-22 - 1989 22.065 29,412 133 4.951 22 24.461-111- 1990 89,109 24,793 28 0 24.793-28 - 1991 107.136 64.192 60 9,409 9 54,783-51- 1992 75,987 28,933 38 4,226 6 24.707-33 - 1993 11,393 76,660 673 3,814 33 72,846-639- 1994 50,880 48,212 95 685 1 47,527-93- 1995 109,421 53.364 49 0 53,364-49- 111-211 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 253 of 491 IDAHO POWER COMPANY ACCOUNT 361.00 STRUCTUES AN IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 37.981 51,552 136 4,198-11-55.750-147 - 1997 16,507 35,670 216 202 1 35,469-215- 1998 42,390 4,564 37,826- 1999 86,627 5,857-7 -7.776 9 13.633 16 2000 81,427 193 -0 7.628 9 7,821 10 2001 109,256 2,082 -2 -3.573 3 5,655 5 2002 56,378 6,740 12 1,007-2 -7,747-14- 2003 28,952 2,548 9 80-0 2,628-9- 2004 27,054 24,460 90 1,618 6 22.842 -84 - 2005 6,389 0 0 0 2006 42,263 9,229 22 2,275 5 6,954-16 - 2007 12,681 362 3 884 7 522 4 2008 27,667 13,406 48 18,962 69 5,556 20 2009 101.502 151,241 149 58,363 57 92,878-92 - 2010 147,703 77,578 53 15,703 11 61,875-42 - TOTAL 2,508,503 1,416,117 56 242.242 10 1,173,875-47 - THREE-YEAR MOVING AVERAGES 54-56 10,876 1.570 14 3,552 33 1.983 18 55-57 10,921 1,550 14 3,170 29 1,620 15 56-58 11,687 2.259 19 2,073 18 186-2 - 57-59 10,870 2,026 19 1,625 15 401-4 - 58-60 9,740 1.887 19 1,092 11 795-8- 59-61 6,714 1,047 16 805 12 241-4 - 60-62 11.547 4,553 39 1,838 16 2,715-24 - 61-63 12.807 5,149 40 1,815 14 3,334-26- 62-64 15,071 6.511 43 2,173 14 4,339-29- 63 -65 15.815 3,745 24 1,373 9 2,373-15- 64-66 27,556 5,569 20 2,093 8 3,476-13- 65-67 43,573 8.145 19 1,984 5 6,161-14- 66~68 49,443 10.402 21 2,538 5 7.864-16- 67-69 41,946 9.507 23 2,657 6 6,850-16 - 68-70 20,721 5,926 29 3,885 19 2,041-10- 69~71 19,832 4,087 21 3,712 19 375-2 - 70-72 25.308 6,762 27 4,465 18 2,297 -9- 71-73 35.439 10,013 28 3,096 9 6,917-20- 72-74 32,902 13,027 40 4,225 13 8,802-27- 73 -75 38,189 14,323 38 4,316 11 10,007 -26 - 74-76 47,596 14,645 31 5,059 11 9,586-20- 75-77 50,893 19,508 38 3,717 7 15,792-31- ~i-212 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 254 of 491 IDAHO POWER COMPANY ACCOUNT 361.00 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 64,680 34,483 53 3,344 5 31,139-48-77-79 61,314 56,745 93 2,439 4 54,306-89- 78-80 62,014 53,526 86 2,307 4 51.219-83-79-81 48,073 48.807 102 2,135 4 46,672-97- 80-82 49,794 34.920 70 3,196 6 31,724-64- 81-83 59,287 55,142 93 4,870 8 50,272-85 -82-84 50.688 43,413 86 4,271 8 39,142-77-83-85 67,417 64,229 95 4,463 7 59,766-89-84-86 53,993 51,409 95 2,192 4 49,217-91- 85-87 71,181 52,339 74 3,877 5 48,462-68 -86-88 52,900 22,404 42 2,349 4 20,055-38- 87-89 49,925 18,644 37 3,999 8 14,645-29- 88-90 53,399 21,678 41 1,650 3 20,028-38 -89-91 72,770 39,466 54 4,787 7 34.679-48 - 90-92 90,744 39,306 43 4,545 5 34.761-38 -91-93 64,839 56.595 87 5,816 9 50,779-78- 92 -94 46,087 51,268 111 2,908 6 48,360-105 - 93 -95 57.231 59,412 104 1,500 3 57.912-101-94-96 66,094 51,043 77 1,171-2-52,214-79- 95-97 54,636 46,862 86 1,332-2 -48,194-88-96-98 18,162 43,204 238 189 1 43,015-237-97-99 34.378 24,068 70 4,180 12 19,887-58- 98-00 56,018 12,113 22 6,656 12 5.457 -10- 99-01 92,437 2,711-3 -6,326 7 9,036 1000-02 82,354 1,488 2 3,398 4 1,910 2 01-03 64.862 2,402 4 829 1 1,573 -2 - 02-04 37.461 11,249 30 177 0 11,072-30-03-05 20,798 9.003 43 513 2 8,490-41- 04-06 25,235 11,230 45 1.298 5 9, 932-39-05-07 20,444 3,197 16 1,053 5 2,144-10- 06-08 27,537 7,666 28 7,374 27 292 -1-07-09 47,283 55,003 116 26,070 55 28,933-61-08-10 92,291 80,742 87 31,010 34 49,732-54 - FIVE-YEAR AVERAGE 06-10 66,363 50.364 76 19,238 29 31,126-47 - ~i-213 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 255 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUN PCT AMOUNT PCT 1954 53,499 6,194 12 21.815 41 15,621 29 1955 62,702 5,160 8 30,154 48 24,994 40 1956 69,337 5,757 8 14,283 21 8,526 12 1957 29,956 2,806 9 7,406 25 4,600 15 1958 45.630 4,410 10 16,647 36 12.237 27 1959 62,980 7,376 12 62,980 100 55,604 88 1960 31,709 3,770 12 6,854 22 3,084 10 1961 63,460 3,291 5 16,057 25 12.766 20 1962 114,336 12,879 11 27,809 24 14.930 13 1963 100,103 6,604 7 28,435 28 21,831 22 1964 126,112 9,724 8 18,931 15 9,207 7 1965 223,513 9,594 4 55.844 25 46,250 21 1966 120,566 16,141 13 37,642 31 21,501 18 1967 243,564 12,245 5 22,741 9 10.496 4 1968 133.108 14,486 11 50,973 38 36,487 27 1969 65,098 8,412 13 22,907 35 14,495 22 1970 157,384 10,401 7 20,965 13 10,564 7 1971 142,962 10,379 7 34,427 24 24,048 17 1972 221,937 29.230 13 43,742 20 14.512 7 1973 295,195 14,958 5 79,255 27 64,297 22 1974 200,729 31,479 16 76,689 38 45,210 23 1975 265,235 21,142 8 56,234 21 35,092 13 1976 248,008 37,112 15 115,689 47 78,577 32 1977 293,714 41,759 14 124,431 42 82,672 28 1978 490,681 74,177 15 134.725 27 60,548 12 1979 436,850 72,026 16 157.499 36 85,473 20 1980 410,717 56,609 14 96.257 23 39.648 10 1981 621,994 104,709 17 63,612 10 41,097-7 - 1982 253,566 52,639 21 46,591 18 6,048-2 - 1983 621,880 225,201 36 81,701 13 143,500-23 - 1984 240,845 0 39,367 16 39.367 16 1985 765.569 59,731 8 62,561 8 2,830 0 1986 299,018 19,819 7 31,500 11 11,681 4 1987 535.535 48,552 9 20,730 4 27,822-5- 1988 384,717 39,978 10 18,552 5 21,426-6 - 19B9 374.016 49.834 13 78,823 21 28,989 8 1990 699,535 78,910 11 0 78.910-11- 1991 662,831 99,389 15 61,524 9 37,865-6- 1992 2,040,610 168,884 8 106,538 5 62.346-3 - 1993 399,594 78,926 20 61,460 15 17,466-4 - 1994 363,260 113 1907 :n 44 ,520 12 69,387-19-- 1995 689 ,140 83 ,044 12 68,008 10 15,036-2 - ~i-214 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 256 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 267.691 30,356 11 25,761 10 4,595-2 - 1997 965.150 63.896 7 346-0 64,242-7- 1998 15.722 7,532 48 8,699 55 1.168 7 1999 1,101,469 14,571 1 724 0 13,847-1 2000 975.990 3,886 0 141.285 14 137.399 14 2001 2,017,560 61,308 3 23,013 1 38,296-2 - 2002 893,712 127,289 14 21,516 2 105,773-12 - 2003 782,574 295,808 38 58,595 7 237,212-30- 2004 676,851 37,881-6 -31,549 5 69,430 10 2005 915,844 151,200 17 76,463 8 74,737-8- 2006 1,397,499 155,796 11 102.000 7 53.797-4- 2007 447,205 50,650 11 26,638 6 24,012-5- 2008 526,933 340,557 65 68,867 13 271,690-52 - 2009 744.946 517,292 69 84,816 11 432,477-58- 2010 2,481.706 36,266 1 201,843 8 165,577 7 TOTAL 27,872,046 3.570.170 13 3,038,301 11 531,869-2- THREE-YEAR MOVING AVERAGES 54-56 61,846 5,704 9 22,084 36 16,380 26 55-57 53,998 4,574 8 17,281 32 12,707 24 56- 58 48,308 4.324 9 12,779 26 8,454 18 57-59 46,189 4,864 11 29,011 63 24,147 52 58-60 46,773 5,185 11 28,827 62 23,642 51 59-61 52,716 4,812 9 28.630 54 23,818 45 60-62 69.835 6,647 10 16.907 24 10.260 15 61-63 92,633 7,591 8 24,100 26 16,509 18 62-64 113.517 9,736 9 25,058 22 15,323 13 63-65 149.909 8,641 6 34,403 23 25,763 17 64-66 156.730 11,820 8 37,472 24 25,653 16 65-67 195.881 12,660 6 38,742 20 26.082 13 66-68 165,746 14,291 9 37,119 22 22,828 14 67-69 147.257 11,714 8 32,207 22 20,493 14 68 -70 118,530 11,100 9 31.615 27 20,515 17 69-71 121.815 9,731 8 26,100 21 16,369 1370-72 174,094 16.670 10 33,045 19 16,375 9 71-73 220,031 18,189 8 52,475 24 34,286 16 72-74 239,287 25,222 11 66,562 28 41,340 17 73 -75 253,720 22,526 9 70,726 28 48.200 19 74 -76 237,991 29,911 13 82,871 35 52.960 22 75 -77 268,986 33,338 12 98,785 37 65,447 24 ~i-215 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos. IPC Page 257 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 344,134 51,016 15 124,948 36 73,932 21 77-79 407,082 62,654 15 138.885 34 76,231 19 78 -80 446,083 67,604 15 129,494 29 61,890 14 79-81 489,854 77,781 16 105,789 22 28,008 6 80-82 428.759 71,319 17 68,820 16 2,499-1- 81-83 499,147 127,516 26 63,968 13 63.548-13- 82 -84 372,097 92,613 25 55,886 15 36,727-10- 83-85 542,765 94,977 17 61,210 .i 33,768-6- 84-86 435,144 26,517 6 44,476 10 17,959 4 85 -87 533,374 42,701 8 38,264 7 4,437-1- 86-88 406,423 36,116 9 23,594 6 12,522-3 - 87-89 431,423 46,121 11 39,368 9 6.753-2 - 88- 90 486,089 56,241 12 32,458 7 23,782-5- 89- 91 578,794 76,044 13 46,782 8 29,262-5- 90-92 1,134,325 115,728 10 56,021 5 59,707-5- 91-93 1,034,345 115.733 11 76,507 7 39,226-4 - 92 -94 934,488 120.572 13 70,839 8 49,733-5- 93 -95 483,998 91,959 19 57,996 12 33,963-7- 94-96 440,030 75,769 17 46,096 10 29,673-7- 95-97 640.660 59,099 9 31,141 5 27,958-4 - 96-98 416,187 33,928 8 11,371 3 22,557-5- 97-99 694,113 28,666 4 3,026 0 25,641-4 - 98-00 697,727 8.663 1 50,236 7 41,573 6 99-01 1,365,006 26,588 2 55.007 4 28,419 2 00-02 1,295,754 64,161 5 61.938 5 2,223-0 01-03 1,231,282 161,468 13 34,375 3 127,094-10- 02-04 784,379 128,405 16 37,220 5 91,185-12 - 03 -05 791,756 136,376 17 55,536 7 80,840-10- 04 -06 996,731 89,705 9 70,004 7 19,701-2 - 05-07 920,183 119.215 13 68,367 7 50,848-6- 06-08 790,546 182,334 23 65,835 8 116,499-15- 07-09 573,028 302,833 53 60,107 10 242,726-42 - 08-10 1,251,195 298,038 24 118,508 9 179,530-14 - FIVE-YEAR AVERAGE 06 -10 1,119,658 220,112 20 96,833 9 123,280-11- 111-216 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 258 of 491 IDAHO POWER COMPANY ACCOUNT 364.00 POLES,TOWERS AND FIXTURES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT peT 1954 216,466 109,263 50 155,269 72 46,006 21 1955 153,992 67,156 44 103.969 68 36,813 24 1956 129,425 59,055 46 94,251 73 35,196 27 1957 155,462 65,298 42 108,378 70 43,080 28 1958 167.137 88,594 53 120.155 72 31.561 19 1959 226,786 88,718 39 196,374 87 107,656 47 1960 149,593 79.213 53 84,244 56 5,031 3 1961 185,502 95.419 51 73,944 40 21,475-12- 1962 190.388 99,148 52 86,127 45 13,021-7- 1963 205,791 96,319 47 77,633 38 18,686-9- 1964 221,221 102,824 46 81,359 37 21,465-10- 1965 263,981 11 7,964 45 95,545 36 22,419-8- 1966 305,149 134,789 44 74,785 25 60,004-20- 1967 306,506 125,573 41 62,300 20 63.273-21- 1968 303,817 101.096 33 55,873 18 45,223-15- 1969 311.478 125.438 40 54,108 17 71,330-23 - 1970 321,498 113,630 35 63,867 20 49.763-15 - 1971 359,078 152,340 42 67,824 19 84,516-24 - 1972 407,974 183,654 45 72.410 18 111,244-27 - 1973 451,870 190,859 42 120,290 27 70,569-16- 1974 531,941 240,896 45 198,174 37 42.722-8- 1975 519,965 253,030 49 205,582 40 47,448-9- 1976 606.269 244,615 40 185,266 31 59,349-10- 1977 597.169 272.244 46 149.667 25 122,577-21- 1978 532,950 257.988 48 161,398 30 96,590-18- 1979 624,083 318,612 51 181.895 29 136,717-22 - 1980 564,372 303,896 54 248,161 44 55.735-10 - 1981 615.842 371,910 60 235,271 38 136.639-22 - 1982 590,222 488,192 83 230,084 39 258,108-44- 1983 600,115 495,267 83 223,301 37 271,966-45- 1984 501,896 543,159 108 211,301 42 331,858-66- 1985 653,188 498,470 76 191,098 29 307,372-47 - 1986 519,434 376.814 73 93,897 18 282,917-54 - 1987 558,284 335,109 60 123,805 22 211,304-38- 1988 454,217 332,004 73 103,356 23 228,648-50- 1989 578,956 468,212 81 149,430 26 318.782-55 - 1990 819,676 359,485 44 108.833 13 250,652-31- 1991 849.166 552,170 65 159,729 19 392,441-46- 1992 703,104 573,568 82 90,969 13 482.599-69- 1993 882,499 605,212 69 138,054 16 467,158-53 - 1994 1,170,964 585,222 50 109,971 9 475,251-41 - 1995 1,038,173 701,947 68 136,336 13 565,611-54 - ~i-217 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 259 of 491 IDAHO POWER COMPANY ACCOUNT 364.00 POLES,TOWERS AND FIXTURES SUMY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUN PCT AMOUNT PCT AMOUNT PCT 1996 920,317 780,288 85 129,797 14 650,491-71- 1997 954,641 158,414 17 27,340 3 131,073-14 - 1998 103,924 1,255,216 110.443 106 1.144,773- 1999 873,264 1,145,932 131 270.119 31 875,813-100- 2000 1,172,275 917,860 78 87.239 7 830,621-71- 2001 2,014,084 826,316 41 1,087,401 54 261,085 13 2002 1,035,938 1,028,780 99 13B,217 13 890,563 -86- 2003 1.331.447 1,409,689 106 97,387-7 -1,507,076-113- 2004 1,293,933 1.464,575 113 127,850 10 1,336,725-103- 2005 1,313,589 1.215,977 93 45,312 3 1,170,665-89- 2006 1,669,989 1,358,158 81 229,523 14 1,128,635-68 - 2007 2,145,801 1,773,436 83 245.492 11 1,527,943-71 - 2008 2,049,269 28,104-1 -50.891 2 78,995 4 2009 1.592.334 634,698 40 67,606 4 567,092-36- 2010 1,431,589 1,380,267 96 159,505 11 1,220,762-85- TOTAL 39.447,993 26,695,875 68 8,163,633 21 18,532,242-47 - THREE-YEAR MOVING AVERAGES 54-56 166,628 78,491 47 117,830 71 39,338 24 55-57 146,293 63,836 44 102,199 70 38,363 26 56-58 150,675 70.982 47 107,595 71 36,612 24 57-59 183,128 80,870 44 141,636 77 60,766 33 58-60 181.172 85,508 47 133,591 74 48,083 27 59-61 187,294 87,783 47 118,187 63 30,404 16 60-62 175,161 91,260 52 81,438 46 9,822-6- 61-63 193,894 96,962 50 79,235 41 17,727-9- 62-64 205,800 99,430 48 81,706 40 17,724 -9- 63-65 230,331 105,702 46 84,846 37 20,857-9- 64-66 263,450 118,526 45 83.896 32 34,629-13- 65-67 291,879 126,109 43 77,543 27 48,565-17- 66-68 305.157 120,486 39 64,319 21 56,167-18 - 67-69 307,267 117,369 38 57,427 19 59,942-20- 68-70 312,264 113,388 36 57,949 19 55,439-18- 69-71 330,685 130,469 39 61.933 19 68.536-21- 70-72 362,850 149,875 41 68,034 19 81,841-23 - 71-73 406,307 175,618 43 86,841 21 88,776-22 - 72 -74 463,928 205,136 44 130,291 28 74,845-16- 73 -75 501,259 228,262 46 174,682 35 53,580-11- 74-76 552,725 246,180 45 196,341 36 49,840-9- 75-77 574,468 256,630 45 180,172 31 76,458-13- ~i-218 Exhibit No. 1 Case No. IPC-E-12-D8 J. Spanos, IPC Pag 260 of 491 IDAHO POWER COMPANY ACCOUNT 364.00 POLES,TOWERS AND FIXTURES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 578,796 258,282 45 165,444 29 92.839-16- 77-79 584,734 282,948 48 164,320 28 118,628-20- 78-80 573.802 293,499 51 197,151 34 96,347-17- 79-81 601,432 331.473 55 221,776 37 109,697-18- 80-82 590,145 387,999 66 237,839 40 150,161-25- 81-83 602,060 451,790 75 229.552 38 222.238-37- 82 -84 564,078 508,873 90 221.562 39 287,311-51- 83-85 585,066 512,299 88 208,567 36 303,732-52- 84-86 558,173 472,814 85 165,432 30 307,382-55- 85-87 576,969 403.464 70 136,267 24 267.198-46- 86- 88 510,645 347,976 68 107,019 21 240,956-47 - 87 -89 530,486 378,442 71 125,530 24 252.911-48- 88-90 617.616 386,567 63 120,540 20 266,027-43 - 89-91 749,266 459,956 61 139,331 19 320,625-43 - 90-92 790,649 495,074 63 119,844 15 375,231-47- 91-93 811,590 576,983 71 129,584 16 447,399-55 - 92 -94 918,856 588,001 64 112,998 12 475,003-52 - 93 -95 1,030,545 630,794 61 128,120 12 502,673-49- 94-96 1.043,151 689,152 66 125,368 12 563,784-54 - 95-97 971,044 546,883 56 97.825 10 449,058-46- 96-98 659,627 731,306 ILL 89,193 14 642,112-97- 97-99 643,943 853,187 132 135,967 21 717,220-111- 98-00 716.488 1.106.336 154 155,934 22 950.402-133- 99-01 1,353,208 963,369 71 481,586 36 481,783-36- 00-02 1,407,433 924,319 66 437,619 31 486,700-35- 01-03 1,460,490 1,088,262 75 376,077 26 712.185-49- 02-04 1,220.440 1,301,015 107 56,227 5 1,244,788-102- 03 -05 1,312,990 1,363,414 104 25,259 2 1,338,155-102 - 04-06 1,425,837 1,346,237 94 134,228 9 1,212,008-85 - 05-07 1,709,793 1,449,190 85 173,442 10 1,275,748-75- 06-08 1,955,020 1,034,497 53 175,302 9 859,195-44 -07-09 1.929,135 793,343 41 121,330 6 672,014-35- 08-10 1,691,064 662,287 39 92,667 5 569,620-34- FIVE-YEAR AVERAGE 06- 10 1,777,796 1,023,691 58 150,604 8 873,088-49- ~i-219 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 261 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AND DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 109,238 25.968 24 160,204 147 134,236 123 1955 94,553 22,201 23 118,563 125 96,362 102 1956 63,905 13,923 22 77,827 122 63,904 100 1957 69,933 16,677 24 84,260 120 67,583 97 1958 91,708 24,627 27 95,247 104 70,620 77 1959 83,336 26,113 31 98,068 118 71,955 86 1960 73,740 21,193 29 79,630 108 58,437 79 1961 106,095 28,694 27 98,420 93 69.726 66 1962 105,896 30.066 28 90,733 86 60.667 57 1963 119,642 32,015 27 85,305 71 53,290 45 1964 102,346 30,782 30 89,662 88 58,880 58 1965 166,522 38,086 23 130,434 78 92,348 55 1966 177,791 47,259 27 151,158 85 103,899 58 1967 185.322 66,443 36 122,993 66 56,550 31 1968 200,456 72,477 36 116.078 58 43.601 22 1969 217,282 90,540 42 131.004 60 40,464 19 1970 161,835 84,112 52 108,458 67 24,346 15 1971 239,346 112,220 47 133,388 56 21,168 9 1972 258,658 150,318 58 108,912 42 41,406-16 - 1973 197,625 139,277 70 151,700 77 12,423 6 1974 300,076 206,706 69 152,928 51 53,778-18 - 1975 293,410 211.447 72 193,556 66 17,891-6- 1976 257,980 198,490 77 157,269 61 41,221-16 - 1977 247,696 191.057 77 121,425 49 69,632-28 - 1978 207,640 189,893 91 165.810 80 24,083-12 - 1979 283,764 246,328 87 215,799 76 30,529-11- 1980 269,890 221,014 82 186,362 69 34,652-13- 1981 275,557 254,114 92 177,428 64 76,686-28- 1982 280,685 374,072 133 172,038 61 202,034-72- 1983 302,656 372,392 123 162,876 54 209,516-69- 1984 244.967 390,201 159 164,008 67 226,193-92 - 1985 337,170 357,543 106 122,295 36 235,248-70- 1986 167,474 157,747 94 70,655 42 87,092-52 - 1987 257,572 216,613 84 84,418 33 132,195-51 - 1988 196,994 213,191 108 73,423 37 139,768-71 - 1989 216,485 364,043 168 133,490 62 230,553-106 - 1990 370.725 232,465 63 143,519 39 88,946-24 - 1991 319.565 342,264 107 152,821 48 189,443-59- 1992 264,038 320,181 121 127,112 48 193,069-73 - 1993 352,961 337,131 96 103,728 29 233,403-66- 1994 210,988 342,950 163 118,479 56 224,471-106 - 1995 504,788 378,760 75 113,945 23 264,815-52 - 111-220 Exhibit NO.1 Case No. IPC-E-12..8 J. Spanos, IPC Page 262 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES SUMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUN PCT AMOUNT PCT AMOUNT PCT 1996 321,821 472,705 147 111,509 35 361,196-112- 1997 555.829 159.199 29 2,472-0 161,671-29- 1998 64.028 623,097 973 46,286 72 576,8'11-901- 1999 353,837 345,652 98 193,451 55 152,200-43 - 2000 594,930 393,653 66 34,954 6 358. 700~60- 2001 1,045,822 444,495 43 452,740 43 8,245 1 2002 687,374 513,135 75 55,366 8 457,769-67- 2003 501.747 559.804 112 57,358 11 502,446-100- 2004 1,971,608 600.953 30 42.417 2 558.536-28- 2005 743,922 521,174 70 18,166 2 503,009-68- 2006 1,261,783 633,360 50 88,868 7 544,492-43- 2007 1,650,469 782,256 47 68,589 4 713,668-43 - 2008 1,522,794 501,550 33 72.031 5 429,519-28 - 2009 1,567,490 425,284 27 44,039 3 381,245-24 - 2010 1,508,291 528,134 35 67.713 4 460,421-31- TOTAL 23,340.055 14.696,044 63 6,696,444 29 7,999,601-34 - THREE-YEAR MOVING AVERAGES 54-56 89,232 20,697 23 118.865 133 98.167 LLO 55-57 76,130 17,600 23 93,550 123 75,950 100 56-58 75,182 18,409 24 85,778 114 67,369 90 57-59 81,659 22,472 28 92,525 113 70,053 86 58-60 82,928 23,978 29 90,9B2 110 67,004 81 59-61 87,724 25.333 29 92,039 105 66,706 76 60-62 95,244 26,651 28 89,594 94 62,943 66 61-63 1l0,544 30,258 27 91,486 83 61,228 55 62-64 109,295 30,954 28 88.567 81 57,612 53 63 -65 129,503 33,628 26 101,800 79 68,173 53 64 -66 148,886 38,709 26 123,751 83 85,042 57 65-67 176.545 50,596 29 134,862 76 84,266 48 66-68 187,856 62,060 33 130,076 69 68,017 36 67 -69 201,020 76,487 38 123,358 61 46,872 23 68-70 193,191 82,376 43 118,513 61 36,137 19 69-71 206.154 95,624 46 124,283 60 28,659 14 70-72 219,946 115,550 53 116,919 53 1,369 1 71-73 231,876 133,938 58 131,333 57 2,605-1- 72 -74 252,120 165,434 66 137.847 55 27,587-ll- 73 -75 263,704 185,810 70 166,061 63 19,749-7 - 74 -76 283,822 205,548 72 167.918 59 37,630-13 - 75-77 266,362 200,331 75 157,417 59 42,915-16- ~i-221 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 263 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 237,772 193,147 81 148,168 62 44,979-19- 77-79 246,367 209,093 85 167,678 68 41,415-17- 78-80 253,765 219,078 86 189,324 75 29,755-12- 79-81 276,404 240,485 87 193,196 70 47,289-17- 80-82 275,377 283,067 103 178,609 65 104,457-38 - 81-83 286,299 333,526 116 170.781 60 162,745-57- 82 - 84 276,103 378,888 137 166,307 60 212,581-77- 83 ~85 294,931 373,379 127 149,726 51 223,652-76- 84-86 249,870 301,830 121 118.986 48 182,844-73 - 85-87 254,072 243,968 96 92,456 36 151,512-60- 86 -88 207,347 195,850 94 76,165 37 119.685-58- 87-89 223,684 264,616 118 97,110 43 167,505-75- 88 - 90 261.401 269,900 103 116,811 45 153,089-59- 89-91 302,258 312,924 104 143,277 47 169,647-56- 90-92 318,109 298,303 94 141,151 44 157,153-49- 91- 93 312,188 333.192 107 127,887 41 205,305-66- 92-94 275,996 333,421 121 116,440 42 216,981-79- 93 -95 356,246 352.947 99 112,051 31 240,896-68- 94-96 345,866 398,138 115 114,644 33 283,494-82 - 95-97 460.813 336,888 73 74,327 16 262,561-57- 96-98 313,892 418,334 133 51,774 16 366,559-117- 97 - 99 324.565 375,983 116 79,088 24 296,894-91- 98-00 337,598 454.134 135 91,564 27 362.570-107 - 99-01 664,863 394,600 59 227,048 34 167,552-25- 00-02 776,042 450,428 58 181,020 23 269,408-35- 01-03 744,981 505,811 68 188,488 25 317,323-43 - 02 -04 1,053,576 557,964 53 51.714 5 506,250-48- 03 -05 1,072,426 560,644 52 39,314 4 521,330-49- 04 -06 1,325,771 585,162 44 49,817 4 535,345-40 - 05-07 1,218,725 645.597 53 58,541 5 587,056-48- 06-08 1,478,349 639,055 43 76,496 5 562.559-38- 07-09 1,580,251 569,697 36 61,553 4 508,144-32- 08- 10 1.532,858 484,989 32 61,261 4 423,728-28- FIVE-YEAR AVERAGE 06-10 1,502,166 574,117 38 68,248 5 505,869-34 - ~i-222 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 264 of 491 IDAHO POWER COMPANY ACCOUNT 366.00 UNERGROUND CONDUIT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 23 0 0 0 1955 1956 201 0 0 0 1957 95 0 0 0 1958 33 0 0 0 1959 577 0 0 0 1960 55 12 22 0 12-22- 1961 286 0 0 0 1962 47 0 0 0 1963 11 11 1964 36 15 42 0 15-42- 1965 68 7 10 55 81 48 71 1966 477 139 29 115 24 24 -5- 1967 840 111 13 57 7 54-6- 1968 95 0 0 0 1969 6.316 609 10 199 3 410-6- 1970 70 310 443 15 21 295-421- 1971 686 151 22 702 102 551 80 1972 13,861 470 3 694 5 224 2 1973 1,676 486 29 791 47 305 18 1974 3,725 919 25 B46 23 73-2 - 1975 6,044 805 13 669 11 136-2 - 1976 16,646 1,037 6 3,042 18 2,005 12 1977 6.104 2,453 40 2,391 39 62 -1- 1978 17.543 3.036 17 2,946 17 90-1- 1979 12,058 5,281 44 2,526 21 2,755-23 - 1980 23,737 16,891 71 7,141 30 9,750-41- 1981 26,052 9,279 36 6.759 26 2,520-10- 1982 17,770 1,553 9 12,560 71 11,007 62 1983 20,129 10,525 52 13,735 68 3.210 16 1984 13,060 9,897 76 10,036 77 139 1 1985 21,680 12,651 58 7,964 37 4,687-22 - 1986 97,999 12,085 12 2,499 3 9,586-10- 1987 11,906 2,018 17 1.632 14 386-3 - 1988 19,303 30,485 158 6,366 33 24,119-125 - 1989 19,699 11,329 58 2,493 13 8,836-45- 1990 39,565 8,407 21 528 1 7,879-20- 1991 34,432 13,174 38 2,647 8 10,527-31 - 1992 25,781 15.486 60 12,851 50 2,635-10- 1993 34,127 21,222 62 11,401 33 9,821-29- 1994 38,141 22,753 60 4,318 11 18,435-48- 1995 38,824 16,866 43 7.229 19 9,637-25 - ~i-223 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 265 of 491 IDAHO POWER COMPANY ACCOUNT 366.00 UNERGROUN CONDUIT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 40,723 12,975 32 14,683 36 1,708 4 1997 48,181 3,186 7 2,580 5 605-1- 1998 5,403 28,644 530 3,789 70 24,855-460- 1999 38,177 8,786 23 2,574 7 6,212-16- 2000 81,566 45,290 56 18,907 23 26,382-32 - 2001 134,322 68,673 51 3,611 3 65,063-48 - 2002 82,496 17,187 21 1,822 2 15,366-19- 2003 144,806 22,718 16 21,687 15 1,031-1- 2004 94,385 34,520 37 3,918 4 30,602-32 - 2005 138,568 56,673 41 34,459 25 22,214-16- 2006 289,601 43,537 15 7,233 2 36,304-13- 2007 155,340 34,058 22 4,481 3 29,577-19- 2008 65,158 45,565 70 10,215 16 35,350-54- 2009 93,597 20,007 21 11,632 12 8,375-9- 2010 63,945 33,546 52 7,091 11 26,455-41- TOTAL 2,046,035 705,827 34 273,900 13 431,926-21- THREE-YEAR MOVING AVERAGES 54-56 75 0 0 0 55-57 99 0 0 0 56-58 no 0 0 0 57-59 235 0 0 0 58-60 222 4 2 0 4-2- 59-61 306 4 1 0 4-1- 60-62 129 4 3 0 4-3 - 61-63 111 0 4 3 4 3 62-64 28 5 18 4 13 I-s- 63 -65 35 7 21 22 63 15 42 64 -66 194 54 28 57 29 3 2 65-67 462 86 19 76 16 10-2 - 66-68 471 83 18 57 12 26-6- 67-69 2,417 240 10 85 4 155-6- 68-70 2,160 306 14 71 3 235-11- 69-71 2,357 357 15 305 13 51-2 - 70-72 4,872 310 6 470 10 160 3 71-73 5,408 369 7 729 13 360 7 72 -74 6,421 625 10 777 12 152 2 73 -75 3,815 737 19 769 20 32 1 74 -76 8,805 920 10 1,519 17 599 7 75 -77 9,598 1,432 15 2,034 21 602 6 ~i-224 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 266 of 491 IDAHO POWER COMPANY ACCOUNT 366.00 UNDERGROUND CONDUIT SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 13,431 2,175 16 2,793 21 618 5 77-79 11,902 3,590 30 2,621 22 969-8 - 78-80 17,779 8,403 47 4,204 24 4,198-24 - 79-81 20,616 10,484 51 5,475 27 5,008-24- 80-82 22,520 9,241 41 8,820 39 421-2 - 81-83 21,317 7,119 33 11,018 52 3,899 18 82 - 84 16,986 7,325 43 12,110 71 4,785 28 83-85 18,290 11,024 60 10,578 58 446-2- 84-86 44,246 11,544 26 6,833 15 4,711-11- 85-87 43,862 8,918 20 4,032 9 4,886-11- 86-88 43,069 14,863 35 3,499 8 11,364-26- 87 -89 16,969 14,611 86 3,497 21 11,114-65- 88-90 26,189 16,740 64 3,129 12 13,611-52 - 89-91 31,232 10,970 35 1,889 6 9,081-29- 90-92 33,259 12,356 37 5,342 16 7,014-21- 91-93 31,447 16,627 53 8,966 29 7,661-24 - 92-94 32,683 19,820 61 9,523 29 10,297-32 - 93-95 37,031 20,280 55 7,649 21 12,631-34 - 94-96 39,229 17,531 45 8,743 22 8,788-22- 95-97 42,576 11,009 26 8,164 19 2,845-7- 96-98 31,436 14,935 48 7,017 22 7,917-25- 97-99 30,587 13,538 44 2,981 10 10,557-35- 98-00 41,715 27,573 66 8,424 20 19,150-46- 99-01 84,688 40,916 48 8,364 10 32,552-38- 00-02 99,461 43,717 44 8,113 8 35,604-36- 01-03 120,541 36,193 30 9,040 7 27,153-23 - 02-04 107,229 24,808 23 9,142 9 15,666-15- 03 -05 125,920 37,970 30 20,021 16 17,949-14 - 04-06 174,185 44,910 26 15,203 9 29,707-17- 05-07 194,503 44,756 23 15,391 8 29,365-15- 06-08 170,033 41,053 24 7,310 4 33,744-20- 07-09 104,698 33,210 32 8,776 8 24,434-23- 08-10 74,234 33,039 45 9,646 13 23,393-32- FIVE-YEAR AVERAGE 06-10 133,528 35,343 26 8,130 6 27,212-20- ~i-225 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 267 of 491 IDAHO POWER COMPANY ACCOUNT 367.00 UNERGROUN CONDUCTORS AND DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 3,093 1,679 54 2,856 92 1,177 38 1955 1956 2,261 235 10 375 17 140 6 1957 1,932 76 4 257 13 181 9 1958 308 0 94 31 94 31 1959 201 6 3 0 6-3 - 1960 2,437 191 8 22 1 169-7- 1961 562 112 20 210 37 98 17 1962 796 69 9 71 9 2 0 1963 214 15 7 175 82 160 75 1964 447 76 17 17 4 59-13 - 1965 1,614 336 21 0 336-21- 1966 3,596 616 17 240 7 376-10 - 1967 842 971 115 0 971-115- 1968 6.,863 1,111 16 0 1,111-16 - 1969 12,353 1,858 15 15,635 127 13,777 112 1970 4,133 1,070 26 0 1,070-26 - 1971 20,874 1,962 9 3,933 19 1,971 9 1972 38,546 4,325 11 4,049 11 276-1- 1973 9,607 1,997 21 3,226 34 1,229 13 1974 14,196 2,826 20 4,968 35 2,142 15 1975 34,941 5,719 16 3,417 10 2,302-7- 1976 29,819 5,128 17 12,739 43 7,611 26 1977 8,540 6,069 71 5,309 62 760-9- 1978 44,190 4,554 10 11,766 27 7,212 16 1979 24,773 12,611 51 3,229 13 9,382-38 - 1980 55,967 13,994 25 9,869 18 4,125-7- 1981 52,006 8,139 16 1B,726 36 10,587 20 1982 72,228 20,584 28 8,961 12 11,623-16 - 1983 72,826 32,257 44 31,617 43 640-1- 1984 40,324 16,473 41 6,633 16 9,840-24 - 1985 126,743 34,470 27 14,911 12 19,559-15- 1986 57,045 12,230 21 11,169 20 1,061-2- 1987 40,426 17,095 42 27,512 68 10,417 26 1988 66,400 21,010 32 44,167 67 23,157 35 1989 109,470 38,481 35 38,417 35 64 -0 1990 211,955 29,845 14 10,443 5 19,402-9- 1991 231,946 45,997 20 38,744 17 7,253-3 - 1992 176,696 43,101 24 29,475 17 13,626-8 - 1993 280,226 26,418 9 20,515 7 5,903 -2 - 1994 325,541 63 ,706 20 114,937 35 51,231 16 1995 346,909 70,163 20 48,179 14 21,984-6 - ~i-226 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 268 of 491 IDAHO POWER COMPANY ACCOUNT 367.00 UNDERGROUND CONDUCTORS AN DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 358,360 39,103 11 53,283 15 14,180 4 1997 470,097 48,979 10 63,270 13 14,290 3 1998 68,585 118,399 173 12,182 18 106,218-155- 1999 826,021 132,594 16 165,727 20 33,133 4 2000 585,247 207,096 35 14,424 2 192,672-33 - 2001 742,948 98,756 13 17,289 2 81,467-11- 2002 670,903 259,967 39 7,345 1 252,622-38 - 2003 722,524 241,803 33 135,163 19 106,641-15 - 2004 745,583 197,953 27 24,889 3 173,064-23- 2005 642,799 272,009 42 174,834 27 97,175-15 - 2006 864,785 152,293 18 34,939 4 11 7,354-14- 2007 1,244,546 163,070 13 31,200 3 131,870-11- 2008 556,861 417,981 75 70,267-13 -488,248-88 - 2009 1,098,401 597,592 54 82,067 7 515,526-47- 2010 681,268 527,246-77 -74,234 11 601,480 88 TOTAL 12,812,774 2,967,926 23 1,367,441 11 1,600,485-12 ~ THREE-YEAR MOVING AVERAGES 54-56 1,785 638 36 1,077 60 439 25 55-57 1,398 104 7 211 15 107 8 56-58 1,500 104 7 242 16 138 9 57-59 814 27 3 117 14 90 11 58-60 982 66 7 39 4 27-3- 59-61 1,067 103 10 77 7 26-2- 60-62 1,265 124 10 101 8 23-2 - 61-63 524 65 12 152 29 87 17 62-64 486 53 11 88 18 34 7 63 -65 758 142 19 64 8 78-10- 64-66 1,886 343 18 86 5 257-14- 65-67 2,017 641 32 80 4 561-28- 66-68 3,767 899 24 80 2 819-22 - 67-69 6,686 1,313 20 5,212 78 3,898 58 68-70 7,783 1,346 17 5,212 67 3,865 50 69-71 12,453 1,630 13 6,523 52 4,893 39 70-72 21,184 2,452 12 2,661 13 208 1 71-73 23,009 2,761 12 3,736 16 975 4 72 -74 20,783 3,049 15 4,081 20 1,032 5 73 -75 19,581 3,514 18 3,870 20 356 2 74 -76 26,319 4,558 17 7,041 27 2,484 9 75-77 24,433 5,639 23 7,155 29 1,516 6 ~i-227 Exhibit No: 1 Case No. IPC-E-12-D J. Spanos, IPC Page 269 of 491 IDAHO POWER COMPANY ACCOUNT 367.00 UNDERGROUND CONDUCTORS AND DEVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUN PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 27,516 5,250 19 9,938 36 4,688 17 77-79 25,834 7,745 30 6,768 26 977-4 - 78-80 41,643 10,386 25 8,288 20 2,098-5- 79-81 44,249 11,581 26 10,608 24 973 -2 - 80-82 60,067 14,239 24 12,519 21 1,720-3 - 81-83 65,687 20,327 31 19,768 30 559-1- 82 - 84 61,793 23,105 37 15,737 25 7,368-12 - 83 -85 79,964 27,733 35 17,720 22 10,013-13~ 84-86 74,704 21,058 28 10,904 15 10,153-14- 85- 87 74,738 21,265 28 17,864 24 3,401-5- 86- 88 54,624 16,778 31 27,616 51 10,838 20 87- 89 72,099 25,529 35 36,699 51 11,170 15 88-90 129,275 29,779 23 31,009 24 1,230 1 89-91 184,457 38,108 21 29,201 16 8,906-5- 90-92 206,866 39,648 19 26,221 13 13,427-6- 91-93 229,623 38,505 17 29,578 13 8,927-4- 92 - 94 260,821 44,408 17 54,976 21 10,567 4 93 - 95 317,559 53,429 17 61,210 19 7,781 2 94-96 343,603 57,657 17 72,133 21 14,476 4 95-97 391,788 52,748 13 54,911 14 2,162 1 96-98 299,014 68,827 23 42,912 14 25,916-9- 97- 99 454,901 99,991 22 80,393 18 19,598-4-498-00 493,284 152,696 31 64,111 13 88,586-18- 99-01 718,072 146,149 20 65,813 9 80,335-11- 00-02 666,366 188,606 28 13,019 2 175,587-26- 01-03 712,125 200,175 28 53,265 7 146,910-21- 02-04 713,003 233,241 33 55,799 8 177,442-25- 03 -05 703,635 237,255 34 111,629 16 125,626-18- 04-06 751,056 207,418 28 78,221 10 129,198-17- 05-07 917,377 195,791 21 80,324 9 115,467-13- 06-08 888,731 244,448 28 1,376-0 245,824 -28- 07-09 966,603 392,881 41 14,333 1 378,548-39- 08-10 778,843 162,776 21 28,678 4 134,098-17- FIVE-YEAR AVERAGE 06- 10 889,172 160,738 18 30,434 3 130,304-15- 111-228 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 270 of 491 IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUN PCT AMOUNT PCT 1954 48,434 0 8,476 18 8,476 18 1955 47,507 0 16,803 35 16,803 35 1956 68,475 0 19,984 29 19,984 29 1957 137,233 0 64,138 47 64,138 47 1958 54,778 0 6,589 12 6,589 12 1959 62,816 0 6,435 10 6,435 10 1960 92,608 0 10,562 11 10,562 11 1961 89,246 0 4,092 5 4,092 5 1962 121,434 0 3,811 3 3,811 3 1963 132,682 0 3,483 3 3,483 3 1964 116,473 0 5,817 5 5,817 5 1965 136,469 0 3,446 3 3,446 3 1966 133,528 0 6,029 5 6,029 5 1967 308,639 0 5,921 2 5,921 2 1968 311,543 0 7,992 3 7,992 3 1969 272,074 0 5,904 2 5,904 2 1970 277,960 0 9,785 4 9,785 4 1971 386,278 0 14,284 4 14,284 4 1972 427,179 0 5,772 1 5,772 1 1973 425,305 0 27,447 6 27,447 6 1974 405,249 0 19,514 5 19,514 5 1975 511,226 0 18,642 4 18,642 4 1976 1,014,868 0 25,483 3 25,483 3 1977 819,072 0 46,338 6 46,338 6 1978 667,152 0 56,624 8 56,624 8 1979 704,836 0 26,946 4 26,946 4 1980 1,398,461 0 52,785 4 52,785 4 1981 1,625,773 0 69,899 4 69,899 4 1982 786,957 0 54,440 7 54,440 7 1983 1,592,587 0 81,928 5 81,928 5 1984 1,450,462 0 141,570 10 141,570 10 1985 1,948,055 0 73,247 4 73,247 4 1986 1,790,116 0 73,235 4 73,235 4 1987 1,741,560 0 68,068 4 68,068 4 1988 1,029,099 0 68,578 7 68,578 7 1989 1,007,555 0 32,328 3 32,328 3 1990 1,682,472 0 35,671 2 35,671 2 1991 1,727,083 27 0 21,823 1 21,796 1 1992 1,720,267 0 7,768 0 7,768 0 1993 1,195,369 939 0 1,083 0 144 0 1994 1,716,990 510 0 137,701 8 137,191 8 1995 1,202,915 0 10,878 1 10,878 1 111-229 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Pag 271 of 491 IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 372,450 0 14,338 4 14,338 4 1997 232,853 13,764 6 9,692 4 4 1072-2 - 1998 893,997 0 12,756 1 12,756 1 1999 1,536,145 0 45,720 3 45,720 3 2000 1,064,832 0 49,706 5 49,706 5 2001 3,328,697 0 149,384 4 149,384 4 2002 1,208,107 0 21,016 2 21,016 2 2003 1,125,466 0 123,259 11 123,259 11 2004 11,097,038 365,041 3 37,561 0 327, 480~3 - 2005 4,353,657 1,000,579 23 392,125 9 608,454-14- 2006 6,144,875 72,094-1-491,952 8 564,047 9 2007 6,702,097 1,404,639 21 1,612,167 24 207,527 3 2008 6,009,486 2,657,259 44 1,723,410 29 933,849-16 - 2009 6,158,840 1,955,641 32 1,098,279 18 857,361-14- 2010 4,838,735 1,215,341 25 1,113,672 23 101,669-2 - TOTAL 86,456,059 8,541,645 10 8,256,357 10 285,289-0 THREE-YEA MOVING AVERAGES 54-56 54,805 0 15,088 28 15,088 28 55-57 84,405 0 33,642 40 33,642 40 56-58 86,829 0 30,237 35 30,237 35 57-59 84,942 0 25,721 30 25,721 30 58~60 70,067 0 7,862 11 7,862 11 59-61 81,557 0 7,030 9 7,030 9 60-62 101,096 0 6,155 6 6,155 6 61-63 114,454 0 3,795 3 3,795 3 62-64 123,530 0 4,370 4 4,370 4 63-65 128,541 0 4,249 3 4,249 3 64-66 128,823 0 5,097 4 5,097 4 65-67 192,879 0 5,132 3 5,132 3 66 -68 251,237 0 6,647 3 6,647 3 67-69 297,419 0 6,606 2 6,606 2 68-70 287,192 0 7,894 3 7,894 3 69-71 312,104 0 9,991 3 9,991 3 70-72 363,806 0 9,947 3 9,947 3 71-73 412,921 0 15,834 4 15,834 4 72-74 419,244 0 17,578 4 17,578 4 73 -75 447,260 0 21,868 5 21,868 5 74-76 643,781 0 21,213 3 21,213 3 75-77 781,722 0 30,154 4 30,154 4 ~i-230 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 272 of 491 IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS SUMMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 833,697 0 42,815 5 42,815 5 77-79 730,353 0 43,303 6 43,303 6 78-80 923,483 0 45,452 5 45,452 5 79-81 1,243,023 0 49,877 4 49,877 4 BO-82 1,270,397 0 59,041 5 59,041 5 81-83 1,335,106 0 68,756 5 68,756 5 82 -84 1,276,669 0 92,646 7 92,646 7 B3 -85 1,663,701 0 98,915 6 98,915 6 84-86 1,729,544 0 96,017 6 96,017 6 85-87 1,826,577 0 71,517 4 71,517 4 86-88 1,520,258 0 69,960 5 69,960 5 87-89 1,259,405 °56,325 4 56,325 4 88-90 1,239,709 0 45,526 4 45,526 4 89-91 1,472,370 9 0 29,941 2 29,932 2 90-92 1,709,941 9 °21,754 1 21,745 1 91-93 1,547,573 322 0 10,225 1 9,903 1 92 -94 1,544,209 483 0 48,851 3 48,368 3 93 -95 1,371,758 483 0 49,887 4 49,404 4 94-96 1,097,452 170 0 54,306 5 54,136 5 95-97 602,739 4,588 1 11,636 2 7,048 1 96-98 499,766 4,588 1 12,262 2 7,674 2 97-99 887,665 4,588 1 22,723 3 18,135 2 98-00 1,164,991 0 36,061 3 36,061 3 99-01 1,976,558 0 81,603 4 81,603 4 00-02 1,867,212 0 73,369 4 73,369 4 01-03 1,887,423 0 97,886 5 97,886 5 02-04 4,476,870 121,680 3 60,612 1 61,069-1- 03 -05 5,525,387 455,207 8 184,315 3 270,892-5- 04-06 7,198,523 431,175 6 307,213 4 123,963-2 ~ 05-07 5,733,543 777,708 14 832,081 15 54,373 1 06-08 6,285,486 1,329,934 21 1,275,843 20 54,092-1- 07-09 6,290,141 2,005,846 32 1,477,952 23 527,894 -8- 08-10 5,669,020 1,942,747 34 1,311,787 23 630,960-11- FIVE-YEAR AVERAGE 06- 10 5,970,806 1,432,157 24 1,207,896 20 224,261-4 - ~i-231 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 273 of 491 IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUN peT AMOUNT PCT AMOUNT PCT 1954 50,099 19,126 38 31,630 63 12,504 25 1955 49,703 16,118 32 27,356 55 11,238 23 1956 58,264 18,526 32 24,896 43 6,370 11 1957 60,750 19,142 32 23,881 39 4,739 8 1958 63,155 23,214 37 23,561 37 347 1 1959 72,272 27,494 38 22,553 31 4,941-7- 1960 69,763 25,556 37 19,764 28 5,792-8 - 1961 62,250 25,998 42 17,250 28 8,748-14- 1962 73,246 27,124 37 20,006 27 7,118-10- 1963 87,557 30,374 35 18,150 21 12,224-14 - 1964 92,362 29,868 32 13,752 15 16,116-17- 1965 86,476 31,668 37 17,978 21 13,690-16- 1966 104,545 36,777 35 22,367 21 14,410-14- 1967 106,759 25,904 24 22,245 21 3,659-3 ~ 1968 117,811 29,658 25 28,181 24 1,477-1- 1969 120,251 36,442 30 20,813 17 15,629-13 - 1970 132,099 35,501 27 21,237 16 14,264-11- 1971 150,449 49,249 33 25,366 17 23,883-16- 1972 168,618 58,345 35 26,441 16 31,904-19- 1973 183 i 863 71,462 39 54 ,913 30 16,549-9- 1974 200,448 86,956 43 51,565 26 35,391-18- 1975 208,837 93,663 45 64,111 31 29,552-14- 1976 201,237 90,901 45 62,711 31 28,190-14 - 1977 196,275 91,673 47 64,543 33 27,130-14 - 1978 204,074 102,723 50 63,556 31 39,167-19- 1979 191,678 99,416 52 68,718 36 30,698-16- 1980 152,432 107,098 70 71,171 47 35,927-24 - 1981 158,159 97,468 62 52,509 33 44,959-28- 1982 153,510 131,816 86 40,369 26 91,447-60- 1983 131,298 118,272 90 53,320 41 64,952-49- 1984 147,685 129,951 88 43,121 29 86,830-59- 1985 170,012 111,120 65 37,628 22 73,492-43 - 1986 122,076 103,230 85 23,830 20 79,400-65- 1987 167,481 108,621 65 22,833 14 85,788-51- 1988 211,880 121,329 57 35,324 17 86,005-41- 1989 162,387 134,397 83 37,749 23 96,648-60 - 1990 188,635 104,796 56 44,480 24 60,316-32 - 1991 212,531 145,464 68 30,171 14 115,293-54 - 1992 151,656 150,272 99 20,243 13 130,029-86 - 1993 182,152 136,996 75 19,981 11 117,015-64 - 1994 211,818 157,283 74 15,748 7 141,535-67 - 1995 219,316 171,769 78 14,154 6 157,615-72 - ~i-232 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 274 of 491 IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 203,991 178,426 87 5,159 3 173,268-85 - 1997 201,802 108,534 54 0 108,534-54- 1998 4,719 22,758 482 14,309 303 8,450-179- 1999 124,844 98,552 79 13,502 11 85,050-68- 2000 213,973 94,234 44 18,929 9 75,305-35- 2001 302,421 112,103 37 157,630 52 45,527 15 2002 189,428 111,832 59 22,623 12 89,210-47 - 2003 241,538 131,916 55 75,109 31 56,806-24- 2004 193,925 188,863 97 31,497 16 157,366-81- 2005 358,896 186,929 52 27,972 8 158,957-44- 2006 392,271 215,103 55 28,131 7 186,973-48- 2007 445,692 310,031 70 99,921 22 210,110-47- 2008 430,604 246,238 57 73,056 17 173,182-40- 2009 282,627 245,216 87 34,091 12 211,125-75- 2010 281,308 1B4,894 66 42,469 15 142,424 -51- TOTAL 9,723,907 5,668,390 58 2,064,572 21 3,603,818-37 - THREE-YEA MOVING AVERAGES 54 -56 52,689 17,923 34 27,961 53 10,037 19 55-57 56,239 17,929 32 25,378 45 7,449 13 56-5B 60,723 20,294 33 24,113 40 3,819 6 57-59 65,392 23,283 36 23,332 36 48 0 58-60 68,397 25,421 37 21,959 32 3,462-5- 59-61 68,095 26,349 39 19,856 29 6,494-10- 60-62 68,420 26,226 38 19,007 28 7,219-11- 61-63 74,351 27,832 37 18,469 25 9,363-13 - 62-64 84,388 29,122 35 17,303 21 11,819-14- 63 -65 88,798 30,637 35 16,627 19 14,010-16- 64-66 94,461 32,771 35 18,032 19 14,739-16- 65-67 99,260 31,450 32 20,863 21 10,586-11- 66-68 109,705 30,780 28 24,264 22 6,515-6- 67-69 114,940 30,668 27 23,746 21 6,922-6- 68-70 123,387 33,867 27 23,410 19 10,457-8- 69-71 134,266 40,397 30 22,472 17 17,925-13 - 70-72 150,389 47,698 32 24,348 16 23,350-16- 71-73 167,643 59,685 36 35,573 21 24,112-14 - 72-74 184,310 72,254 39 44,306 24 27,948-15- 73 -75 197,716 84,027 42 56,863 29 27,164-14- 74 -76 203,507 90,507 44 59,462 29 31, 044-15- 75-77 202,116 92,079 46 63,788 32 28,291-14- 111-233 Exhibit No. 1 Case No. IPC-E-12-QS J. Spanos, IPC Page 275 of 491 IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 200,529 95,099 47 63,603 32 31,496-16- 77-79 197,342 97,937 50 65,606 33 32,332-16- 78-80 182,728 103,079 56 67,815 37 35,264-19- 79-81 167,423 101,327 61 64,133 38 37,195-22 - 80-82 154,700 112,127 72 54,683 35 57,444-37- 81-83 147,656 115,852 78 48,733 33 67,119-45- 82-84 144,164 126,680 88 45,603 32 81,076-56- 83-85 149,665 119,781 80 44,690 30 75,091-50- 84-86 146,591 114,767 78 34,860 24 79,907-55- 85-87 153,190 107,657 70 28,097 18 79,560-52 - 86-88 167,146 111,060 66 27,329 16 83,731-50- 87 - 89 180,583 121,449 67 31,969 18 89,480-50- 88-90 187,634 120,174 64 39,184 21 80,990-43 - 89-91 187,851 128,219 68 37,467 20 90,752-48- 90-92 184,274 133,511 72 31,631 17 101,879-55- 91-93 182,113 144,244 79 23,465 13 120,779-66- 92-94 181,875 148,184 81 18,657 10 129,526-71- 93 -95 204,429 155,349 76 16,628 8 138,722-68- 94-96 211,708 169,159 80 11,687 6 157,473-74 - 95-97 208,370 152,910 73 6,438 3 146,472-70- 96-98 136,837 103,240 75 6,489 5 96,751-71- 97-99 110,455 76,615 69 9,270 8 67,345-61- 98-00 114,512 71,848 63 15,580 14 56,268-49- 99-01 213,746 101,630 48 63,354 30 38,276-18- 00-02 235,274 106,057 45 66,394 28 39,663-17- 01-03 244,462 118,617 49 85,120 35 33,496-14- 02-04 208,297 144,203 69 43,076 21 101,127-49- 03 -05 264,786 169,236 64 44,859 17 124,376-47- 04-06 315,030 196,965 63 29,200 9 167,765-53 - 05-07 398,953 237,354 59 52,008 13 185,346-46- 06-08 422,856 257,124 61 67,036 16 190,088-45- 07-09 386,308 267,162 69 69,023 18 198,139-51- 08 -10 331,513 225,449 68 49,872 15 175,577-53 - FIVE-YEAR AVERAGE 06-10 366,500 240,296 66 55,534 15 184,763-50- ~i-234 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 276 of 491 IDAHO POWER COMPANY ACCOUNTS 370.00,37020 AND 370.30 -METERS -NON-AMI SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 38,731 0 1,315 3 1,315 3 1955 34,307 0 2,592 8 2,592 8 1956 145,399 0 6,668 5 6,668 5 1957 38,933 0 3,863 10 3,863 10 1958 41,733 0 3,531 8 3,531 8 1959 38,177 0 3,439 9 3,439 9 1960 44,962 0 2,588 6 2,588 6 1961 74,412 0 2,065 3 2,065 3 1962 109,953 0 2,730 2 2,730 2 1963 84,171 0 892 1 892 1 1964 114,230 0 1,688 1 1,688 1 1965 128,408 0 2,372 2 2,372 2 1966 114,995 0 1,524 1 1,524 1 1967 124,725 0 1,459 1 1,459 1 1968 91,037 0 2,275 2 2,275 2 1969 90,158 0 6,705 7 6,705 7 1970 71,329 0 1,037 1 1,037 1 1971 77,709 0 664 1 664 1 1972 96,621 0 1,939 2 1,939 2 1973 102,734 0 1,300 1 1,300 1 1974 114,392 0 7,582 7 7,582 7 1975 133,417 0 1,650 1 1,650 1 1976 126,066 0 1,537 1 1,537 1 1977 151,841 0 698 0 698 0 1978 149,897 0 4,823 3 4,823 3 1979 129,187 0 0 0 1980 163,252 0 1,891 1 1,891 1 1981 151,259 0 3,827 3 3,827 3 1982 176,885 0 2,147 1 2,147 1 1983 152,989 0 6,223 4 6,223 4 1984 182,576 0 2,240 1 2,240 1 1985 153,721 0 3,110 2 3,110 2 1986 117,708 0 6,947 6 6,947 6 1987 122,998 0 9,119 7 9,119 7 1988 120,078 0 3,873 3 3,873 3 1989 1,096,701 1 0 0 1-0 1990 273,185 0 1,111 0 1,111 0 1991 311,050 0 2,355 1 2,355 1 1992 532,241 0 1,581 0 I,S81 0 1993 299,045 0 1,943 1 1,943 1 1994 443,707 0 I,628 0 1,628 0 1995 552,151 0 782 0 782 0 1t-235 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 277 of 491 IDAHO POWER COMPANY ACCOUNTS 370.00,37020 AN 370.30 -METERS -NON-AMI SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 782,409 0 698 0 698 0 1997 804,006 0 36 0 36 0 1998 844,327 0 315 0 315 0 1999 1,018,497 0 0 0 2000 1,291,978 0 0 0 2001 1,259,322 0 0 0 2002 1,157,698 0 0 0 2003 932,287 6 0 0 6-0 2004 765,620 290,529 38 45,548 6 244,981-32- 2005 1,533,383 322,536 21 42,487 3 280,048-18- 2006 2,929,509 203,653-7-70,644 2 274,297 9 2007 1,053,020 44,053 4 132,931 13 88,878 8 2008 814,082 183,012 22 145,491 18 37,520-5- 2009 133,563 68,219 51 55,642 42 12,577-9- 2010 4,189,155 12,322 0 260,537 6 248,215 6 TOTAL 26,825,925 717,023 3 870,044 3 153,021 1 THREE-YEAR MOVING AVERAGES 54-56 72,812 0 3,525 5 3,525 5 55-57 72,880 0 4,374 6 4,374 6 56-58 75,355 0 4,687 6 4,687 6 57-59 39,614 0 3,611 9 3,611 9 58-60 41,624 0 3,186 8 3,186 8 59-61 52,517 0 2,697 5 2,697 5 60-62 76,442 0 2,461 3 2,461 3 61-63 89,512 0 1,896 2 1,896 2 62-64 102,785 0 1,770 2 1,770 2 63 -65 108,936 0 1,651 2 1,651 2 64-66 119,211 0 1,861 2 1,861 2 65 -67 122,709 0 1,785 1 1,785 1 66-68 110,252 0 1,753 2 1,753 2 67-69 101,973 0 3,480 3 3,480 3 68-70 84,175 0 3,339 4 3,339 4 69-71 79,732 0 2,802 4 2,802 4 70 -72 81,886 0 1,213 1 1,213 1 71-73 92,355 0 1,301 1 1,301 1 72 -74 104,582 0 3 ,607 3 3,607 3 73 -75 116,848 0 3,511 3 3,511 3 74 -76 124,625 0 3,590 3 3,590 3 75-77 137,108 0 1,295 1 1,295 1 111-236 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 278 of 491 IDAHO POWER COMPANY ACCOUNTS 370.00,37020 AN 370.30 -METERS -NON-AMI SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 142,601 0 2,353 2 2,353 2 77-79 143,642 0 1,840 1 1,840 1 78-80 147,445 0 2,238 2 2,238 2 79- 81 147,899 0 1,906 1 1,906 1 80 - 82 163,799 0 2,622 2 2,622 2 81- 83 160,378 0 4,066 3 4,066 3 82 -84 170,817 0 3,537 2 3,537 2 83 -85 163,095 0 3,858 2 3,858 2 84 -86 151,335 0 4,099 3 4,099 3 85-87 131,476 0 6,392 5 6,392 5 86 - 88 120,261 0 6,646 6 6,646 6 87- 89 446,592 0 4,331 1 4,330 1 88 - 90 496,655 0 1,661 0 1,661 0 89~91 560,312 0 1,155 0 1,155 0 90-92 372,159 0 1,682 0 1,682 0 91- 93 380,779 0 1,960 1 1,960 1 92-94 424,998 0 1,717 0 1,717 0 93 - 95 431,634 0 1,451 0 1,451 0 94-96 592,756 0 1,036 0 1,036 0 95-97 712,855 0 506 0 506 0 96-98 810,247 0 350 0 350 0 97-99 888,943 0 117 0 117 0 98-00 1,051,600 0 ios 0 105 0 99-01 1,189,932 0 0 0 00-02 1,236,332 0 0 0 01-03 1,116,435 2 0 0 2-0 02 -04 951,868 96,845 10 15,183 2 81,662-9- 03-05 1,077,097 204,357 19 29,345 3 175,012-16- 04-06 1,742,837 136,470 8 52,893 3 83,577-5- 05-07 1,838,638 54,312 3 82,021 4 27,709 2 06-08 1,598,870 7,804 0 116,356 7 108,552 7 07-09 666,888 98,428 15 111,355 17 12,927 2 08-10 1,712,267 87,851 5 153,890 9 66,039 4 FIVE-YEAR AVERAGE 06-10 1,823,866 20,790 1 133,049 7 112,259 6 ~i-237 Exhibit No. 1 Case No. IPC.E-12-08 J. Spanos, IPC Page 279 of 491 IDAHO POWER COMPANY ACCOUNT 370.10 METERS -AMI SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 2007 182,686 0 0 0 2008 156,316 4,010 3 1,091 1 2,919-2 - 2009 142 1,415 995 458 322 957-673 - 2010 169 0 0 0 TOTAL 339,312 5,425 2 1,549 0 3,876-1- THREE-YEAR MOVING AVERAGES 07-09 113,048 1,808 2 516 0 1,292-1- 08-10 52,209 i,808 3 516 1 1,292 -2 - ~i-238 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 280 of 491 IDAHO POWER COMPANY ACCOUNTS 371. 10 AND 371.20 INSTALLATIONS ON CUSTOMER PREMISES -COMBINED SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1962 808 142 18 521 64 379 47 1963 8,047 1,107 14 4,078 51 2,971 37 1964 18,169 2,601 14 8,554 47 5,953 33 1965 26,370 3,841 15 11,990 45 8,149 31 1966 35,230 5,918 17 17,981 51 12,063 34 1967 40, iiO 5,455 14 20,257 51 14,802 37 1968 36,551 6,174 17 18,542 51 12,368 34 1969 35,024 6,472 18 16,593 47 10,121 29 1970 34,273 6,400 19 18,302 53 11,902 35 1971 41,405 9,569 23 18,541 45 8,972 22 1972 46,382 ll,267 24 23,335 50 12,068 26 1973 68,660 14,153 21 32,781 48 18,628 27 1974 68,699 15,708 23 33,651 49 17,943 26 1975 85,497 20,127 24 41,154 48 21,027 25 1976 65,731 16,373 25 50,350 77 33,977 52 1977 77,407 19,739 26 38,154 49 18,415 24 1978 70,188 18,697 27 30,324 43 ll,627 17 1979 70,209 19,641 28 32,460 46 12,819 18 1980 108,431 30,569 28 50,654 47 20,085 19 1981 92,022 39,048 42 44,181 48 5,133 6 1982 88,495 42,422 48 37,696 43 4,726 -5- 1983 67,160 37,274 56 23,157 34 14,117-21~ 1984 169,699 35,657 21 20,331 12 15,326-9- 1985 61,928 31,941 52 16,542 27 15,399-25- 1986 67,207 34,208 51 16,595 25 17,613-26- 1987 87,088 38,737 44 29,047 33 9,690-11- 1988 76,899 46,938 61 28,017 36 18,921-25 - 1989 65,075 46,341 71 29,257 45 17,084-26- 1990 73,596 61,736 84 28,735 39 33,001-45 - 1991 69,693 36,651 53 17,004 24 19,647-28 - 1992 65,701 33,762 51 18,708 28 15,054-23 - 1993 1,471,801 17,371 1 lll,970 8 94,599 6 1994 77,490 29,000 37 ll,564 15 17,436-23 - 1995 17,897 23,627 132 15,087 84 8,540-48 - 1996 34,890 43,045 123 13,775 39 29,270-84- 1997 11,968 46,021- 385-7,909 66 53,931 451 1998 2,542 44,525 8,566 337 35,960- 1999 34,281 17,693 52 3,747 11 13,947-41- 2000 77,887 8,367 11 8,146 10 222-0 2001 96,981 35,353 36 15,173 16 20,180-21- 2002 38,964 42,435 109 10,169 26 32,266-83 - 2003 44,730 38,878 87 10,513 24 28,366-63 - ~i-239 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 281 of 491 IDAHO POWER COMPANY ACCOUNTS 371.10 AN 371. 20 INSTALLATIONS ON CUSTOMER PREMISES -COMBINED SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULA REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 2004 35/663 49,727 139 12/606 35 37/121-104 - 2005 46,710 43,172 92 6,641 14 36/531-78- 2006 39,279 11/299-29-6,227-16-5/073 13 2007 41,007 459 1 85/016 207 84/557 206 2008 350,501 49,163 14 20,449 6 28/714-8 - 2009 56,714 47,771 84 8,662 15 39,109-69- 2010 98,519 38, ILL 39 9,727 10 28/385-29- TOTAL 4/499/578 1/170/045 26 1,130/983 25 39,062-1- THREE~YEAR MOVING AVERAGES 62-64 9/008 1/283 14 4/384 49 3,101 34 63 -65 17,529 2/516 14 8/207 47 5,691 32 64-66 26,590 4,120 15 12,842 48 8,722 33 65-67 33,903 5/071 15 16,743 49 11,671 34 66-68 37/297 5,849 16 18/927 51 13/078 35 67-69 37/228 6,034 16 18,464 50 12/430 33 68-70 35/283 6,349 18 17,812 50 11,464 32 69~71 36/901 7,480 20 17,812 48 10/332 28 70-72 40/687 9,079 22 20,059 49 10/981 27 71-73 52,149 11,663 22 24,886 48 13 / 223 25 72-74 61/247 13/709 22 29/922 49 16/213 26 73-75 74,285 16/663 22 35/862 48 19/199 26 74-76 73,309 17/403 24 41/718 57 24,316 33 75-77 76/212 18/746 25 43/219 57 24/473 32 76-78 71/109 18,270 26 39/609 56 21/340 30 77-79 72,601 19/359 27 33,646 46 14,287 20 78 -80 82/943 22,969 28 37,813 46 14,844 18 79-81 90/221 29,753 33 42,432 47 12/679 14 80-82 96,316 37,346 39 44/177 46 6/831 7 81-83 82,559 39,581 48 35/011 42 4,570-6- 82 -84 10B,451 38,451 35 27,061 25 11/390-11- 83 -85 99/596 34,957 35 20,010 20 14/947-15- 84-86 99/611 33,935 34 17,823 18 16,113-16- 85 -87 72,074 34,962 49 20,728 29 14,234-20- 86-88 77,065 39,961 52 24,553 32 15,408-20- 87 -89 76,354 44,005 58 28/774 38 15,232-20- 88-90 71,857 51,672 72 28,670 40 23,002~32~ 89-91 69,455 48,243 69 24,999 36 23,244-33 - 90-92 69,663 44,050 63 21,482 31 22,567-32 - 91-93 535,732 29,261 5 49,227 9 19,966 4 ~i-240 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 282 of 491 IDAHO POWER COMPANY ACCOUNTS 371.10 AN 371.20 INSTALLATIONS ON CUSTOMER PREMISES -COMBINED SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 92-94 538,331 26,711 5 47,414 9 20,703 4 93-95 522,396 23,333 4 46,207 9 22,874 4 94-96 43,426 31,891 73 13,475 31 18,415-42- 95-97 21,585 6,883 32 12,257 57 5,374 25 96 -98 16,467 13,850 84 10,083 61 3,766-23- 97-99 16,264 5,399 33 6,741 41 1,341 8 98-00 38,237 23,529 62 6,819 18 16,709-44- 99-01 69,716 20,471 29 9,022 13 11,450-16- 00-02 71,278 28,718 40 11,162 16 17,556-25- 01-03 60,225 38,889 65 11,951 20 26,937-45- 02-04 39,786 43,680 110 11,096 28 32,584-82- 03 -05 42,367 43,926 104 9,920 23 34,006-80- 04 -06 40,550 27,200 67 4,340 11 22,860-56- 05-07 42,332 10,777 25 28,477 67 17, 699 42 06 -08 143,596 12,774 9 33,079 23 20 1305 14 07-09 149,407 32,464 22 38,042 25 5,578 4 08-10 168,578 45,015 27 12,946 8 32,069-19- FIVE-YEAR AVERAGE 06-10 117,204 24,841 21 23,525 20 1,316-1- ~i-241 Exhibit No. 1 Case No. IPC-E-12-Qa J. Spnos, IPC Page 283 of 491 IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AND SIGNAL SYSTEMS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1954 14,471 2,197 15 2,444 17 247 2 1955 6,467 1,194 18 2,357 36 1,163 18 1956 6,484 1,264 19 3,213 50 1,949 30 1957 6,474 1,363 21 2,143 33 780 12 1958 22,376 1,222 5 2,503 11 1,281 6 1959 7,732 2,002 26 2,398 31 396 5 1960 11,593 2,978 26 4,297 37 1,319 11 1961 19,137 1,841 10 4,107 21 2,266 12 1962 9,262 2,124 23 3,574 39 1,450 16 1963 16,238 3,341 21 3,318 20 23-0 1964 21,229 3,891 18 5,109 24 1,218 6 1965 51,708 7,177 14 11,302 22 4,125 8 1966 34,062 5,272 15 5,472 16 200 1 1967 39,862 6,386 16 5,784 15 602-2 - 1968 42,368 8,024 19 8,344 20 320 1 1969 41,451 11,460 28 5,215 13 6,245-15- 1970 29,410 6,944 24 2,729 9 4,215-14- 1971 63,742 13,184 21 5,899 9 7,285-11- 1972 62,699 12,734 20 3,054 5 9,680-15- 1973 46,936 12,205 26 3,178 7 9,027-19- 1974 62,429 15,430 25 680 1 14,750-24 - 1975 77,371 18,089 23 0 18,089-23 - 1976 45,239 14,210 31 0 14,210-31- 1977 52,708 12,173 23 2,301 4 9,872-19- 1978 47,147 14,388 31 6,526 14 7,862-17- 1979 24,429 5,799 24 2,155 9 3,644-15- 1980 23,793 14,253 60 6,109 26 8,144 -34 - 1981 48,005 22,306 46 5,884 12 16,422-34 - 1982 195,063 81,838 42 18,008 9 63,830-33 - 1983 433,125 125,003 29 18,172 4 106,831-25- 1984 507,186 81,330 16 16,533 3 64,797-13 - 1985 240,750 81,224 34 14,135 6 67,089-28- 1986 223,026 47,001 21 7,099 3 39,902-18- 1987 89,728 12,539 14 7,239 8 5,300-6- 1988 17,521 10,624 61 4,687 27 5,937-34 - 1989 20,145 10,542 52 10,616 53 74 0 1990 42,174 12,648 30 5,748 14 6,900-16- 1991 34,071 20,125 59 4,539 13 15,586-46- 1992 30,213 15,694 52 5,589 18 10,105-33- 1993 27,329 19,372 71 4,488 16 14,884-54- 1994 42,092 15 ,854 38 6,214 15 9,640-23 - 1995 53,995 18,748 35 7,479 14 11,269-21- 111-242 Exhibit No. 1 Case NO.IPC-E-12-08 J. Spanos, IPC Page 284 of 491 IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AN SIGNAL SYSTEMS SUMMARY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1996 76,995 23,662 31 4,484 6 19,177-25- 1997 64,358 21,977 34 996 2 20,981-33 - 1998 6,482 28,668 442 2,591 40 26,077-402 - 1999 29,816 16,950 57 2,141 7 14,809-50- 2000 30,889 12,318 40 2,793 9 9,526-31- 2001 68,110 49,640 73 41,971 62 7,669-11- 2002 80,005 15,538 19 7,829 10 7,710-10- 2003 59,693 26,139 44 30,708-51-56,847-95- 2004 44,694 35,221 79 6,697 15 28,524-64- 2005 70,098 33,684 48 4,781 7 28,903-41- 2006 63,807 81,515 128 22,618 35 58,897-92 - 2007 74,757 39,181 52 8,194 11 30,987-41- 2008 57,435 32,409 56 13,799 24 18,610-32 - 2009 43,059 21,036 49 1,661 4 19,376 45- 2010 46,865 50,614 108 6,156 13 44,458-95 - TOTAL 3,708,303 1,264,545 34 336,644 9 927,901-25- THREE-YEAR MOVING AVERAGES 54-56 9,141 1,552 17 2,671 29 1,120 12 55-57 6,475 1,274 20 2,571 40 1,297 20 56-58 11,778 1,283 11 2,620 22 1,337 11 57-59 12,194 1,529 13 2,348 19 819 7 58-60 13,900 2,067 15 3,066 22 999 7 59-61 12,821 2,274 18 3,601 28 1,327 10 60-62 13,331 2,314 17 3,993 30 1,678 13 61-63 14,879 2,435 16 3,666 25 1,231 8 62-64 15,576 3,119 20 4,000 26 882 6 63 -65 29,725 4,803 16 6,576 22 1,773 6 64-66 35,666 5,447 15 7,294 20 1,848 5 65-67 41,877 6,278 15 7,519 18 1,241 3 66-68 38,764 6,561 17 6,533 17 27-0 67-69 41,227 8,623 21 6,448 16 2,176-5 - 68-70 37,743 8,809 23 5,429 14 3,380-9- 69-71 44,868 10,529 23 4,614 10 5,915-13 - 70 -72 51,950 10,954 21 3,894 7 7,060-14 - 71-73 57,792 12,708 22 4,044 7 8,664-15- 72 -74 57,355 13,456 23 2,304 4 11,152-19- 73 -75 62,245 15,241 24 1,286 2 13,955-22 - 74 -76 61,680 15,910 26 227 0 15,683-25- 75-77 58,439 14,824.25 767 1 14,057-24 - 111-243 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 285 of 491 IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AN SIGNAL SYSTEMS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 76-78 48,365 13,590 28 2,942 6 10,648-22 - 77-79 41,428 10,787 26 3,661 9 7,126-17- 78-80 31,790 11,480 36 4,930 16 6,550-21 - 79-81 32,076 14,119 44 4,716 15 9,403-29- 80-82 88,954 39,466 44 10,000 11 29,465-33 - 81-83 225,398 76,382 34 14,021 6 62,361-28- 82 -84 378,458 96,057 25 17,571 5 78,486-21- 83-85 393,687 95,852 24 16,280 4 79,572-20- 84-86 323,654 69,852 22 12,589 4 57,263-18- 85-87 184,501 46,921 25 9,491 5 37,430-20- 86-88 110,092 23,388 21 6,342 6 17,046-15- 87-89 42,465 11,235 26 7,514 18 3,721-9- 88 -90 26,613 11,271 42 7,017 26 4,254-16- 89- 91 32,130 14,438 45 6,968 22 7,471-23 - 90-92 35,486 16,156 46 5,292 15 10,864-31- 91-93 30,538 18,397 60 4,872 16 13,525-44- 92-94 33,211 16,973 51 5,430 16 11,543-35- 93-95 41,139 17,991 44 6,060 15 11,931-29- 94-96 57,694 19,421 34 6,059 11 13,362-23 - 95-97 65,116 21,462 33 4,320 7 17,142-26- 96-98 49,278 24,769 50 2,691 5 22,078-45- 97-99 33,552 22,532 67 1,910 6 20,622-61- 98-00 22,396 19,312 86 2,508 11 16,804-75- 99-01 42,938 26,303 61 15,635 36 10,668-25- 00-02 59,668 25,832 43 17,531 29 8,301-14 - 01-03 69,269 30,439 44 6,364 9 24,075-35- 02-04 61,464 25,633 42 5,394 -9-31,027-50 - 03 -05 58,162 31,681 54 6,410 -11-38,091-65- 04 - 06 59,533 50,140 84 11,365 19 38,775-65 - 05-07 69,554 51,460 74 11,864 17 39,596-57 - 06-08 65,333 51,035 78 14,870 23 36,165-55- 07-09 58,417 30,875 53 7,885 13 22,991-39- 08-10 49,120 34,686 71 7,205 15 27,481-56- FIVE-YEAR AVERAGE 06-10 57,185 44,951 79 10,485 18 34,466-60- ~i-244 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 286 of 491 IDAHO POWER COMPANY ACCOUNTS 390.00 THRU 390.20 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1961 10,211 205 2 200 2 5-0 1962 6,527 172 3 135 2 37-1- 1963 74,603 391 1 29,575 40 29,184 39 1964 24,986 4,473 18 60 0 4,413-18 - 1965 7,334 162 2 165 2 3 0 1966 4,453 12 0 0 12-0 1967 1,362 686 50 10 1 676-50- 1968 4,565 291 6 200 4 91-2 - 1969 6,502 868 13 0 868-13 - 1970 6,083 1,010 17 9,812 161 8,802 145 1971 27,001 3,729 14 1,946 7 1,783-7 - 1972 44,667 0 275 1 275 1 1973 8,760 21 0 0 21-0 1974 47,098 0 9,249 20 9,249 20 1975 1976 20,550 4,920 24 0 4,920-24 - 1977 11,220 0 64,543 575 64,543 575 1978 71,091 374 1 2,600 4 2,226 3 1979 63,084 8,309 13 34,745 55 26,436 42 1980 16,136 18,901 117 9,124 57 9,777-61- 1981 42,191 25,844 61 1,510 4 24,334-58- 1982 54,227 55,373 102 437 1 54,936~101- 1983 100,414 27,682 28 1,994 2 25,688-26- 1984 72,054 14,500 20 0 14,500-20- 1985 221,380 38,269 17 835 0 37,434-17- 1986 192,608 7,767 4 95,966 50 88,199 46 1987 109,981 0 27,844 25 27,844 25 1988 44,597 8,785 20 0 8,785-20 - 1989 19,334 6,445 33 0 6,445-33 - 1990 349,188 31,698 9 7,500 2 24,198-7 - 1991 87,701 55,458 63 2,675 3 52,783-60- 1992 204,566 30,015 15 111,648 55 81,633 40 1993 990,168 293,769 30 134,855 14 158,914~16- 1994 128,921 203,080 158 4,995 4 198,085-154- 1995 380,071 11,824 3 0 11,824-3 - 1996 556,577 117,514 21 124,531 22 7,016 1 1997 203,948 101,914 50 0 101,914-50- 1998 67,575 30,943-46 -0 30,943 46 1999 673,167 128,239-19-125 0 128,364 19 2000 802,890 356,112-44 -269 0 356,381 44 2001 163,498 48,196 29 154,305 94 106,109 65 2002 539,872 33,632-6 -237 -0 33,396 6 ~i-245 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 287 of 491 IDAHO POWER COMPANY ACCOUNS 390.00 THRU 390.20 STRUCTURES AND IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 2003 116,210 4,240 4 153,178-132-157,418-135- 2004 392,033 63,981 16 103,267 26 39,286 10 2005 231,812 54,233 23 43 0 54,190-23 - 2006 279,334 30,304 11 357 0 29,947-11- 2007 527,945 124,400 24 151,060 29 26,660 5 2008 484,603 127,727 26 6B8 0 127,038-26- 2009 320,175 46,435 15 226 0 46,209-14- 2010 659,555 56,271 9 882 0 55,389-8- TOTAL 9,472,830 1,081,322 11 935,237 10 146,086-2- THREE-YEAR MOVING AVERAGES 61-63 30,447 256 1 9,970 33 9,714 32 62-64 35,372 1,679 5 9,923 28 8,245 23 63-65 35,641 1,675 5 9,933 28 8,258 23 64-66 12,258 1,549 13 75 1 1,474-12 - 65-67 4,383 287 7 58 1 228 -5- 66-68 3,460 330 10 70 2 260-8- 67-69 4,143 615 15 70 2 545-13 - 68-70 5,717 723 13 3,337 58 2,614 46 69-71 13,195 1,869 14 3,919 30 2,050 16 70-72 25,917 1,580 6 4, all 15 2,431 9 71-73 26,809 1,250 5 740 3 510-2 - 72-74 33,508 7 0 3,175 9 3,168 9 73-75 18,619 7 0 3,083 17 3,076 17 74-76 22,549 1,640 7 3,083 14 1,443 6 75-77 10,590 1,640 15 21,514 203 19,874 188 76-78 34,287 1,765 5 22,381 65 20,616 60 77-79 48,465 2,894 6 33,963 70 31,068 64 78-80 50,104 9,195 18 15,490 31 6,295 13 79-81 40,470 17,685 44 15,126 37 2,558 -6- 80-82 37,518 33,373 89 3,690 10 29,682-79- 81-83 65,611 36,300 55 1,314 2 34,986-53 - 82 -84 75,565 32,518 43 810 1 31,708-42- 83-85 131,283 26,817 20 943 1 25,874-20- 84-86 162,014 20,179 12 32,267 20 12,088 7 85-87 174,656 15,345 9 41,548 24 26,203 15 86-88 115,729 5,517 5 41,270 36 35,753 31 87-89 57,971 5,077 9 9,281 16 4,205 7 88-90 137,706 15,643 11 2,500 2 13,143-10- 89-91 152,074 31,200 21 3,392 2 27,809-18- ~i-246 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos. IPC Page 288 of 491 IDAHO POWER COMPANY ACCOUNTS 390.00 THRU 390.20 STRUCTURES AN IMPROVEMENTS SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE-YEAR MOVING AVERAGES 90-92 213,818 39,057 18 40,608 19 1,551 191-93 427,478 126,414 30 83,059 19 43,355-10 - 92 -94 441,218 175,621 40 83,833 19 91,789-21- 93 -95 499,720 169,558 34 46,617 9 122,941-25-94-96 355,190 110,806 31 43,175 12 67,631-19- 95-97 380,199 77,084 20 41,510 11 35,574-9- 96-98 276,033 62,829 23 41,510 15 21,318-8 -97-99 314,897 19,089-6-42 0 19,131 6 98-00 514,544 171,765-33 -131 0 171,896 33 99-01 546,518 145,385-27-51,566 9 196,951 3600-02 502,087 113,849-23 -51,446 10 165,295 3301-03 273,193 6,268 2 297 0 5,971-2 - 02-04 349,372 11,530 3 16,716-5-28,246-8 -03-05 246,685 40,818 17 16,623-7 -57,441-23 - 04-06 301,060 49,506 16 34,556 11 14,950-5-05-07 346,364 69,646 20 50,487 15 19,159-6 - 06-08 430,628 94,143 22 50,702 12 43,442-10-07-09 444,241 99,520 22 50,658 11 48,862-11- OB-10 488,111 76,811 16 599 0 76,212-16- FIVE-YEAR AVERAGE 06-10 454,323 77,027 17 30,643 7 46,385-10- ~i-247 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 289 of 491 IDAHO POWER COMPANY ACCOUNT 392.00 TRASPORTATION EQUIPMENT -EXCLUDING AIRPLANE SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 1961 214,111 1,608 1 78,335 37 76,727 36 1962 263,335 1,604 1 66,275 25 64,671 25 1963 238,960 1,251 1 53,236 22 51,985 22 1964 171,926 578 0 32,927 19 32,349 19 1965 252,034 643 0 50,683 20 50,040 20 1966 272,737 440 0 54,559 20 54,119 20 1967 251,879 885 0 38,535 15 37,650 15 1968 337,710 167 0 87,872 26 87,705 26 1969 401,876 133 0 73,593 18 73,460 18 1970 290,737 232 0 58,010 20 57,778 20 1971 279,864 0 58,194 21 58,194 21 1972 281,338 0 98,158 35 98,158 35 1973 162,481 126 0 27,392 17 27,266 17 1974 301,766 0 45,218 15 45,218 15 1975 140,915 0 30,886 22 30,886 22 1976 450,870 136 0 99,057 22 98,921 22 1977 345,928 0 67,481 20 67,481 20 1978 725,993 0 203,237 28 203,237 28 1979 520,202 5,848 1 204,039 39 198,191 38 1980 547,462 4,513 1 157,745 29 153,232 28 1981 609,544 13,789 2 167,979 28 154,190 25 1982 1,016,358 27,573 3 335,420 33 307,847 30 1983 1,132,187 45,008 4 312,581 28 267,573 24 1984 545,751 24,500 4 165,390 30 140,890 26 1985 1,311,231 43,512 3 319,916 24 276,404 21 1986 1,561,767 44,320 3 504,934 32 460,614 29 1987 944,640 96 0 399,550 42 399,454 42 1988 1,228,938 20,923 2 299,144 24 278,221 23 1989 765,664 0 283,837 37 283,837 37 1990 1,769,465 3 1,790 2 391,988 22 360,198 20 1991 1,317,925 18,631 1 282,543 21 263,912 20 1992 1,594,827 17,869 1 350,194 22 332,325 21 1993 1,365,227 0 340,868 25 340,868 25 1994 1,909,426 5,400 0 521,151 27 515,751 27 1995 1,949,736 33,567 2 1,391 0 32,176-2- 1996 1,332,689 700-0 555,394 42 556,094 42 1997 1,343,838 13,519 1 374,290 28 360,771 27 1998 1,788,042 79-0 365,047 20 365,125 20 1999 1,678,908 131-0 702,314 42 702,445 42 2000 1,385,920 8 0 226,885 16 226,877 16 2001 1,966,998 47,000-2 -375,352 19 422,352 21 2002 1,695,448 0 256,174 15 256,174 15 ~i-248 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 290 of 491 IDAHO POWER COMPANY ACCOUNT 392.00 TRASPORTATION EQUIPMENT -EXCLUDING AIRPLANE SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT 2003 1,477,409 0 222,213 15 222,213 15 2004 1,167,347 0 310,204 27 310,204 27 2005 1,123,846 51 a 175,744 16 175,694 16 2006 1,785,800 °308,235 17 308,235 17 2007 990,416 37-0 256,298 26 256,335 26 2008 4,459,265 0 382,140 9 382,140 9 2009 2,080,609 37,300-2 -202,960 10 240,259 12 2010 1,711,154 0 235,335 14 235,335 14 TOTAL 51,462,498 273,472 1 11,210,904 22 10,937,431 21 THREE-YEAR MOVING AVERAGES 61-63 238,802 1,488 1 65,949 28 64,461 27 62 -64 224,740 1,144 1 50,813 23 49,668 22 63-65 220,973 824 0 45,615 21 44,791 20 64-66 232,232 554 0 46,056 20 45,503 20 65-67 258,883 656 0 47,926 19 47,270 18 66-68 287,442 497 a 60,322 21 59,825 21 67-69 330,488 395 0 66,667 20 66,272 20 68-70 343,441 177 0 73,158 21 72,981 21 69-71 324,159 122 0 63,266 20 63,144 19 70-72 283,980 77 0 71,454 25 71,377 25 71-73 241,228 42 0 61,248 25 61,206 25 72-74 248,528 42 a 56,923 23 56,881 23 73-75 201,721 42 0 34,499 17 34,457 17 74-76 297,850 45 0 58,387 20 58,342 20 75-77 312,571 45 0 65,808 21 65,763 21 76-78 507,597 45 0 123,258 24 123,213 24 77-79 530,708 1,949 0 158,252 30 156,303 29 78-80 597,886 3,454 1 188,340 32 184,887 31 79-81 559,069 8,050 1 176,588 32 168,538 30 80-82 724,455 15,292 2 220,381 30 205,090 28 81-83 919,363 28,790 3 271,993 30 243,203 26 82-84 898,099 32,360 4 271,130 30 238,770 27 83 -85 996,390 37,673 4 265,962 27 228,289 23 84-86 1,139,583 37,444 3 330,080 29 292,636 26 85-87 1,272,546 29,309 2 408,133 32 378,824 30 86-88 1,245,115 21,780 2 401,209 32 379,430 30 87-89 979,747 7,006 1 327,510 33 320,504 33 88-90 1,254,689 17,571 1 324,990 26 307,419 25 B9-91 1,284,351 16,807 1 319,456 25 302,649 24 ~i-249 Exhibit No. 1 Case No. IPC-E-12"(8 J. Spanos, IPC Page 291 of 491 IDAHO POWER COMPANY ACCOUNT 392.00 TRASPORTATION EQUIPMENT -EXCLUDING AIRPLANE SUMMAY OF BOOK SALVAGE COST OF GROSS NET REGULAR REMOVAL SALVAGE SALVAGE YEAR RETIREMENTS AMOUNT PCT AMOUNT PCT AMOUNT PCT THREE~YEAR MOVING AVERAGES 90-92 1,560,739 22,763 1 341,575 22 318,812 20 91-93 1,425,993 12,167 1 324,535 23 312,368 22 92-94 1,623,160 7,756 0 404,071 25 396,315 24 93-95 1,741,463 12,989 1 287,803 17 274,814 16 94-96 1,730,617 12,756 1 359,312 21 346,556 20 95-97 1,542,088 15,462 1 310,359 20 294,897 19 96-98 1,488,190 4,247 0 431,577 29 427,330 29 97-99 1,603,596 4,436 0 480,550 30 476,114 30 98-00 1,617,623 67-0 431,415 27 431,483 27 99-01 1,677,275 15,708-1 -434,850 26 450,558 27 00-02 1,682,788 15,664-1 -286,137 17 301,801 18 01-03 1,713,285 15,667-1 -284,580 17 300,246 18 02-04 1,446,735 0 262,864 18 262,864 18 03 -05 1,256,201 17 0 236,054 19 236,037 19 04-06 1,358,998 17 0 264,728 19 264,711 19 05-07 1,300,021 4 0 246,759 19 246,755 19 06 -08 2,411,827 12-0 315,558 13 315,570 13 07-09 2,510,097 12,446-0 280,466 11 292,912 12 08-10 2,750,343 12,433-0 273,478 10 285,912 10 FIVE-YEAR AVERAGE 06-10 2,205,449 7,467-0 276,994 13 284,461 13 111-250 EXhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 292 of 491 ~i-251 DEPRECIATION CALCULATIONS Exhibit No. 1 Case No. IPG-E-12-08 J. Spanos, IPC Page 293 of 491 IDAHO POWER COMPANY ACCOUNT 310.20 LA AND WATER RIGHTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCUATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) JIM BRIDGER INTERIM SURVIVOR CURVE.. IOWA 75 - R4 PROBABLE RETIREMENT YEAR.. 6-2034 NET SALVAGE PERCENT.. 0 1974 190,524.48 119,335 143,701 46,823 21.75 2,153 1979 5,620.16 3,307 3,982 1,638 22.18 74 2003 6,870.62 1,776 2,139 4,732 22.94 206 203,015.26 124,418 149,822 53,193 2,433 VALMY UNIT #1 AN COMMON INTERIM SURVIVOR CURVE. .IOWA 75-R4 PROBABLE RETIREMENT YEAR. .6-2031 NET SALVAGE PERCENT. .0 2010 318,976.03 15,196 10,222 308,754 19.99 15,4452011111,367.89 1,375 925 1l0,443 19.99 5,525 430,343.92 16,571 1l,147 419,197 20,970 633,359.18 140,989 160,969 472,390 23,403 COMPOS ITE REMAINING LIFE AND ANAL ACCRUAL RATE,PERCENT . .20.2 3.70 ~i-252 Exhibit NO.1 Case No, IPC-E-12"08 J. Spanos, IPC Page 294 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 311. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) JIM BRIDGER INTERIM SURVIVOR CURVE.. IOWA 100-Sl PROBABLE RETIREMENT YEAR.. 6-2034 NET SALVAGE PERCENT.. -5 1973 1974 1979 1980 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 83,166.88 33,573,815.07 19,075,559.45 210,586.65 11,175.99 643,415.35 161,864.53 386,374.84 723,466.73 207,137.86 100,570.93 48,547.69 9,539.54 1,525,817.71 1,236,807.27 320,691.70 636,675.52 551,450.65 88,359.28 96,130.91 1,074,327.85 100,612.13 395,618.21 602,901.47 279,009.52 227,276.48 401,805.04 244,543.76 651,640.14 2,372,586.28 532,440.98 42,083.12 66,615,999.53 54,629 21,838,927 11,717,964 127,672 6,584 373,207 92,365 216,632 398,226 111,814 53,165 25,093 4,815 750,412 591,729 148,857 286,189 239,310 36,878 38,454 410,112 32,237 117,616 164,447 68,834 49,668 75,730 38,282 79,404 200,344 23,402 477 38,373,475 73,204 29,264,456 15,702,229 171,082 8,823 500,102 123,770 290,290 533,628 149,832 71,242 33,625 6,452 1,005,562 792,925 199,470 383,497 320,679 49,417 51,529 549,556 43,198 157,607 220,361 92,238 66,556 101,479 51,298 106,402 268,464 31,359 639 51,420,972 ~i-253 FUTURE BOOK ACCRUALS (5) 14,122 5,988,050 4,327,108 50,034 2,912 175,484 46,187 115,404 226,012 67,662 34,358 17,350 3,564 596,546 505,723 137,256 285,012 258,345 43,360 49,409 578,489 62,445 257,792 412,685 200,722 172,085 320,416 205,473 577,820 2,2221752 5271704 43,548 18,525,828 REM. LIFE (6) 21.66 21. 70 21. 91 21.95 22.03 22.07 22.11 22.15 22.19 22.22 22.26 22.30 22.33 22.37 22.40 22.44 22.47 22.50 22.54 22.57 22.60 22.68 22.71 22.74 22.76 22.79 22.81 22.83 22.85 22.87 22.89 22.90 ANAL ACCRUAL (7) 652 275,947 197,495 2,279 132 7,951 2,089 5,210 10,185 3,045 1,543 778 160 26,667 22,577 6,117 12,684 11,482 1,924 2,189 25,597 2,753 11,351 18,148 8,819 7,551 14,047 9,000 25,288 97,191 23,054 1,902 835,807 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos. IPC Page 295 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 311. 00 STRUCTUES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) VALMY UNIT #1 AN COMMON INTERIM SURVIVOR CURVE.. IOWA 100-Sl PROBABLE RETIREMENT YEAR.. 6-2031 NET SALVAGE PERCENT.. - 5 1981 1982 1985 1986 1988 1989 1990 1991 1992 1993 1994 1995 1996 1998 1999 2003 2007 2008 2009 2010 2011 25,658,548.72 318,350.53 65,718.52 1,276.08 20,875.47 323,214.68 49,900.48 119,856.27 31,908.32 73,321.38 43,225.12 233,694.46 62,051. 73 23,812.14 95,315.86 64,673.91 630,008.36 2,639,984.81 2,053,038.91 1,231,313.21 2,170,984.74 35,911,073.70 16,221,732 198,535 39,174 748 11,777 178,552 26,966 63,229 16,407 36,652 20,950 109,594 28,071 9,897 37,720 19,493 110,756 362,991 196,685 61,774 28,221 17,779,924 20,582,497 251,906 49,705 949 14,943 226,551 34,215 80,226 20,818 46,505 26,582 139,055 35,617 12,558 47,860 24,733 140,530 460,571 249,558 78,380 35,807 22,559,566 VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 100-Sl PROBABLE RETIREMENT YEAR.. 6-2035 NET SALVAGE PERCENT.. - 5 1985 1986 1988 1989 1990 1991 1992 1993 1994 1995 1996 23,093,068.28 1,276.09 20,875.45 322,533.35 45,740.98 83,968.55 29,863.34 18,382.70 43,225.11 63,400.20 3,060.54 12,702,169 689 10,809 163,248 22,592 40,393 13,964 8,340 18,969 26,838 1,246 17,105,172 928 14,556 219,835 30,423 54,395 18,804 11,231 25,544 36,141 1,678 111-254 FUTE BOOK ACCRUALS (5) 6,358,979 82,362 19,300 391 6,976 112,825 18,180 45,623 12,686 30,483 18,805 106,324 29,537 12,445 52,222 43,174 520,979 2,311,413 1,906,133 1,214,499 2,243,727 15,147,061 7,142,550 412 7,363 118,825 17,605 33,772 12,552 8,071 19,842 30,429 1,536 REM. LIFE (6 ) 19.27 19.30 19.38 19.41 19.47 19.50 19.52 19.55 19.57 19.60 19.63 19.65 19.67 19.72 19.74 19.82 19.89 19.91 19.92 19.93 19.94 23.06 23.10 23.18 23.22 23.26 23.30 23.34 23.37 23.41 23.45 23.48 ANAL ACCRUAL (7) 329,994 4,267 996 20 358 5,786 931 2,334 648 1,555 958 5,411 1,502 631 2,645 2,178 26,193 116,093 95,689 60,938 112,524 771,651 309,738 18 318 5,117 757 1,449 538 345 848 1,298 65 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 296 of 491 IDAHO POWER COMPANY ACCOUNT 311. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) FUTURE BOOK ACCRUALS (5) REM. LIFE (6 ) ANAL ACCRUAL (7 ) VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 100-Sl PROBABLE RETIREMENT YEAR.. 6 - 2 0 3 5 NET SALVAGE PERCENT.. - 5 1997 56,343.99 21,966 29,580 2004 68,456.20 16,355 22,024 2010 547,339.08 23,109 31,119 24,397,533.86 13,070,687 17,601,431 126,924,607.09 69,224,086 91,581,969 29,581 49,855 543,587 23.52 23.73 23.87 1,258 2,101 22,773 8,015,980 346,623 41,688,869 1,954,081 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 21.3 1.54 Exhibit No. 1 Case No. IPC-E-12-08~i-255 J. Spanos, IPC Page 297 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUN 312.10 BOILER PLAT EQUIPMENT - SCRUBBERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) JIM BRIDGER INTERIM SURVIVOR CURVE.. IOWA 60-R3 PROBABLE RETIREMENT YEAR.. 6-2034 NET SALVAGE PERCENT.. -15 1979 1987 1988 1991 1992 1993 1994 1995 1996 1997 2001 2003 2004 2005 2006 2008 2009 2010 9,219,775.15 22,795,230.71 11,922,157.81 12,226,356.74 186,346.65 202,056.04 60,496.24 104,825.81 165,381.93 440,933.37 122,249.82 157,856.26 297,741.00 137,454.95 40,571. 86 490,729.94 3,743,703.92 329,683.78 62,643,551. 98 6,327,928 13,607,955 6,961,908 6,624,234 98,151 103,214 29,888 49,963 75,859 193,641 42,889 47,157 80,410 32,876 8,365 65,435 344,679 15,799 34,710,351 8,466,118 18,206,047 9,314,318 8,862,545 131,316 138,090 39,987 66,845 101,492 259,072 57,381 63,091 107,580 43,985 11,192 87,545 461,145 21,137 46,438,887 VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 60 - R3 PROBABLE RETIREMENT YEAR.. 6 - 2 035 NET SALVAGE PERCENT.. - 15 1985 1992 1993 1994 1997 2003 19,188,954.78 56,096.03 3,434.61 51,903.19 10,640.50 457,014.56 11,717,073 28,906 1,716 25,063 4,559 132,438 14,490,880 35,749 2,122 30,996 5,638 163,790 ~i-256 FUTURE BOOK ACCRUALS (5 ) 2,136,623 8,008,468 4,396,163 5,197,765 82,983 94,275 29,584 53,704 88,698 248,002 83,206 118,443 234,822 114,088 35,466 476,794 3,844,114 357,999 25,601,198 7,576,418 28,761 1,828 28,692 6,598 361,776 REM. LIFE (6) 20.30 21.40 21.51 21. 80 21.88 21.96 22.04 22.11 22.17 22.24 22.46 22.54 22.58 22.62 22.66 22.72 22.75 22.77 21.96 22.75 22.83 22.92 23.14 23.48 ANAL ACCRUAL (7) 105,252 374,227 204,378 238,430 3,793 4,293 1,342 2,429 4,001 11,151 3,705 5,255 10,400 5,044 1,565 20,986 168,972 15,722 1,180,945 345,010 1,264 80 1,252 285 15,408 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 298 of 491 IDAHO POWER COMPANY ACCOUNT 312.10 BOILER PLANT EQUIPMENT - SCRUBBERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL CALCULTED ALLOC.BOOK FUTURE BOOK REM.ANAL YEAR COST ACCRUED RESERVE ACCRUALS LIFE ACCRUAL (1 )(2)(3)(4)(5 )(6)(7) VALMY UNIT #2 INTERIM SURVIVOR CURVE. .IOWA 60-R3 PROBABLE RETIREMENT YEAR..6-2035 NET SALVAGE PERCENT. .-15 2006 27,918.74 5,565 6,882 25,224 23.61 1,06820078,270.19 1,364 1,687 7,824 23.65 331200824,287.00 3,122 3,861 24,069 23.68 1,016 19,828,519.60 11,919,806 14,741,606 8,061,192 365,714 82,472,071.58 46,630,157 61,180,493 33,662,390 1,546,659 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .21. 8 1. 88 ~i-257 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 299 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 312.20 BOILER PLANT EQUIPMENT - OTHER CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) JIM BRIDGER INTERIM SURVIVOR CURVE.. IOWA 60-R1. 5 PROBABLE RETIREMENT YEAR.. 6-2034 NET SALVAGE PERCENT.. -15 1974 1979 1980 1982 1983 1984 1985 1986 1987 1988 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 62,722,635.53 38,000,720.12 755,759.86 244,703.52 1,368,628.45 64,660.06 36,106.23 1,149,964.78 6,609,089.92 1,267,616.88 7,646,717.32 980,704.31 4,322,956.08 3,828,626.76 864,397.28 2,497,315.41 1,245,553.59 1,224,297.79 56,728.38 1,025,507.31 4,718,140.75 6,669,984.06 11,740,349.28 14,623,675.12 14,401,867.69 11,866,703.45 9,290,871.69 15,231,348.23 12,217,494.42 21,905,941.17 3,495,617.66 43,839,077 24,975,897 489,847 153,911 847,164 39,352 21,577 674,362 3,798,403 713,005 3,999,034 498,774 2,132,532 l,82B,181 398,458 1,107,180 529,410 496,595 21,853 372,563 1,606,760 2,106,851 3,403,298 3,836,009 3,346,382 2,378,485 1,549,680 1,978,613 1,103,496 1,022,536 43,375 46,913,340 26,727,359 524,198 164,704 906,572 42,112 23,090 721,652 4,064,770 763,005 4,279,471 533,751 2,282,078 1,956,384 426,400 1,184,822 566,535 531,419 23,385 398,689 1,719,436 2,254,596 3,641,958 4,105,013 3,581,051 2,545,279 1,658,353 2,117,365 1,180,880 1,094,242 46,417 262,074,683.10 109,312,660 116,978,329 111-258 FUTURE BOOK ACCRUALS (5) 25,217,691 16,973,469 344,926 116,705 667,350 32,247 18,432 600,807 3,535,683 694,754 4,514,254 594,059 2,689,321 2,446,537 567,657 1,687,091 865,851 876,523 41,852 780,644 3,706,426 5,415,885 9,859,444 12,712,213 12,981,097 11,101,430 9,026,149 15,398,685 12,869,239 24,097,590 3,973,544 184,407,557 REM. LIFE (6 ) 19.49 20.07 20.17 20.37 20.46 20.55 20.64 20.72 20.80 20.88 21.09 21.15 21.22 21. 28 21.33 21.39 21. 44 21. 49 21.54 21.59 21.63 21. 68 21.72 21.76 21.80 21.84 21.87 21.91 21.94 21.98 22.00 ANAL ACCRUAL (7) 1,293,878 845,713 17,101 5,729 32,617 1,569 893 28,996 169,985 33,274 214,047 28,088 126,735 114,969 26,613 78,873 40,385 40,787 1,943 36,158 171,356 249,810 453,934 584,201 595,463 508,307 412,718 702,815 586,565 1,096,342 180,616 8,680,480 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 300 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 312.20 BOILER PLAT EQUIPMENT - OTHER CALCUATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) VALMY UNIT #1 AND COMMON INTERIM SURVIVOR CURVE.. IOWA 60-R1.5 PROBABLE RETIREMENT YEAR.. 6-2031 NET SALVAGE PERCENT.. -15 1981 1982 1983 1984 1988 1989 1991 1992 1993 1994 1995 1996 1997 1998 1999 2001 2002 2003 2004 2005 2006 2007 2008 2010 50,776,244.76 762,719.70 288,794.71 4,916.00 158,485.09 411,136.75 265,035.42 134,534.51 472,390.54 1,594,549.02 140,936.00 1,089,889.41 126,106.18 116,431.09 1,174,189.44 1,449,111.23 761,603.26 3,717,717.73 599,372.49 623,835.87 3,718,625.77 5,952,696.65 3,284,418.47 2,905,853.81 80,529,593.90 34,313,291 508,269 189,624 3,177 95,323 242,139 149,003 73,663 251,573 823,327 70,396 525,113 58,358 51,589 495,135 543,272 265,766 1,194,540 174,877 162,070 836,981 1,114,532 482,220 155,591 42,779,829 35,990,853 533,118 198,895 3,332 99,983 253,977 156,288 77,264 263,872 863,579 73,838 550,786 61,211 54,111 519,342 569,832 278,759 1,252,941 183,427 169,994 877,901 1,169,021 505,796 163,198 44,871,317 VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 60-R1. 5 PROBABLE RETIREMENT YEAR.. 6 - 2035 NET SALVAGE PERCENT.. -15 1981 1985 1986 1988 1989 1991 1992 1993 14,354.34 66,597,018.00 1,127,374.74 158,485.05 526,115.29 240,385.02 161,927.50 814,220.76 9,007 39,039,239 648,085 87,316 283,046 122,862 80,447 392,126 10,308 44,676,857 741,674 99,925 323,920 140,604 92,064 448,753 111-259 FUTURE BOOK ACCRUALS (5) 22,401,828 344,010 133,219 2,321 82,275 218,830 148,503 77,450 279,377 970,152 88,239 702,587 83,811 79,785 830,976 1,096,646 597,085 3,022,435 505,852 547,418 3,398,519 5,676,580 3,271,286 3,178,534 47,737,716 6,200 31,909,714 554,807 82,333 281,112 135,838 94,152 487,601 REM. LIFE (6) 18.00 18.07 IS.14 18.21 18.45 18.50 18.60 18.65 18.69 18.74 18.78 18.82 18.86 18.89 18.93 19.00 19.03 19.06 19.09 19.12 19.15 19.18 19.20 19.25 21.00 21. 40 21.49 21.66 21.75 21.90 21.97 22.04 ANAL ACCRUAL (7 ) 1,244,546 19,038 7,344 127 4,459 11,829 7,984 4,153 14,948 51,769 4,699 37,332 4,444 4,224 43,897 57,718 31,376 158,575 26,498 28,631 177,468 295,964 170,379 165,119 2,572,521 295 1,491,108 25,817 3,801 12,925 6,203 4,285 22,123 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 301 of 491 IDAHO POWER COMPANY ACCOUNT 312.20 BOILER PLANT EQUIPMENT - OTHER CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ì ORIGINAL COST (2) CALCULATED ACCRUED (3 ì ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7 ) VALMY UNIT #2 INTERIM SURVIVOR CURVE. .IOWA 60-RL. 5 PROBABLE RETIREMENT YEAR. .6-2035 NET SALVAGE PERCENT. .-15 1994 203,865.29 95,014 108,735 125,710 22.10 5,688 1995 340,963.74 153,330 175,472 216,636 22.16 9,776 1996 215,672.58 93,217 106,678 141,345 22.22 6,361 2001 9,990.00 3,302 3,779 7,710 22.49 343 2003 452,838.55 127,186 145,553 375,212 22.59 16,610 2004 1,090,457.34 276,801 316,774 937,252 22.63 41,416 2005 586,333.19 131,795 150,827 523,456 22.68 23,080 2006 776,713.04 150,391 172,109 721,111 22.72 31,739 2007 9,574,922.26 1,536,167 1,758,003 9,253,157 22.76 406,553 2009 349,716.59 30,284 34,657 367,517 22.84 16,09120101,568,022.67 70,434 80,605 1,722,621 22.88 75,2892011790,531.43 9,427 10,788 898,323 22.90 39,228 85,599,907.38 43,339,476 49,598,087 48,841,806 2,238,731 428,204,184.38 195,431,965 211,447,733 280,987,079 13,491,732 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT 20.8 3.15 ~i-260 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 302 of 491 YEAR (l ) IDAHO POWER COMPANY ACCOUNT 312.30 BOILER PLANT EQUIPMENT - RAILCARS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) JIM BRIDGER SURVIVOR CURVE.. IOWA 25 - R3 NET SALVAGE PERCENT.. +20 1991 2,478,477.91 1,360,189 2,478,477.91 1,360,189 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 7.9 375,498 ALLOC. BOOK RESERVE (4) 1,607,284 1,607,284 ~i-261 FUTURE BOOK ACCRUALS (5) REM. LIFE (6) 375,498 7.85 ANAL ACCRUAL (7) 47,834 47,834 1. 93 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 303 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 314.00 TURBOGENERATOR UNITS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) JIM BRIDGER INTERIM SURVIVOR CURVE.. IOWA 45-S1 PROBABLE RETIREMENT YEAR.. 6-2034 NET SALVAGE PERCENT.. -15 1974 1977 1979 1980 1982 1983 1984 1985 1986 1989 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 17,866,004.64 3,929.32 6,104,582.15 1,552.95 12,100.59 105,157.11 29,887.28 50,430.95 146,875.20 39,887.76 9,048,906.30 43,400.82 106,482.65 306,535.05 297,366.45 5,312,439.21 1,129,430.29 2,518,484.84 48,175.87 254,910.00 620,517.93 1,188,237.90 9,255,537.13 2,838,964.18 2,587,242.85 470,719.37 4,971,323.08 6,403,107.94 4,240,193.25 7,721,385.46 83,723,768.52 13,339,634 2,834 4,291,491 1,077 8,154 69,740 19,499 32,335 92,448 23,579 5,092,607 23,763 56,586 157,691 147,738 2,540,249 517,343 1,101,592 19,996 99,790 227,366 403,807 2,887,788 799,911 645,438 101,190 884,538 886,722 406,677 384,220 35,265,803 12,972,679 2,756 4,173,438 1,047 7,930 67,822 18,963 31,446 89,905 22,930 4,952,516 23,109 55,029 153,353 143,674 2,470,370 503,112 1,071,289 19,446 97,045 221,111 392,699 2,808,349 777,907 627,683 98,406 860,206 862,330 395,490 373,651 34,295,690 VALMY UNIT #1 AND COMMON INTERIM SURVIVOR CURVE.. IOWA 45 - S 1 PROBABLE RETIREMENT YEAR.. 6-2031 NET SALVAGE PERCENT.. - 15 1981 12,895,302.961983 91,985.79 9,176,407 63,675 9,017,780 62,574 111-262 FUTE BOOK ACCRUALS (5 ) 7,573,226 1,763 2,846,831 739 5,986 53,109 15,408 26,550 79,002 22,941 5,453,726 26,802 67,426 199,162 198,297 3,638,935 795,733 1,824,969 35,956 196,102 492,484 973,775 7,835,519 2,486,902 2,347,646 442,921 4,856,816 6,501,245 4,480,732 8,505,943 61,986,644 REM. LIFE (6) 15.11 15.79 16.24 16.46 16.89 i 7.11 17.32 17.53 17.74 1S.36 IS.76 18.96 19.16 19.36 19.55 19.74 19.94 20.12 20.31 20.50 20.68 20.86 21.03 21.20 21.37 21.53 21.69 21.84 21.98 22.11 5,811,818 15.2643,20915.60 ANAL ACCRUAL (7 ) 501,206 112 175,297 45 354 3,104 890 1,515 4,453 1,250 290,710 1, 414 3,519 10,287 10,143 184,343 39,906 90,704 1,770 9,566 23,815 46,681 372,588 117,307 109,857 20,572 223,920 297,676 203,855 384,710 3,131,569 380,853 2,770 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 304 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 314.00 TURBOGENERATOR UNITS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) VALMY UNIT #1 AN COMMON INTERIM SURVIVOR CURVE.. IOWA 45-S1 PROBABLE RETIREMENT YEAR.. 6-2031 NET SALVAGE PERCENT.. -15 1985 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 2001 2003 2006 2007 2008 2009 2010 2011 13,825.45 12,313.64 6,382.65 260,808.03 4,099.82 89,218.42 435,683.69 228,312.81 61,205.18 373,826.66 25,661.77 293,464.53 101,649.69 43,022.22 7B6,292.79 663,248.47 469,978.66 510,061.78 189,000.27 17,555,345.28 9,281 7,832 3,977 158,974 2,440 51,778 245,994 125,020 32,429 191,005 12,609 116,702 34,610 10,234 155,728 102,245 50,632 28,408 2,749 10,582,729 9,121 7,697 3,908 156,226 2,398 50,883 241,742 122,859 31,868 187,703 12,391 114,685 34,012 10,057 153,036 100,478 49,757 27,917 2,701 10,399,792 VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 45-81 PROBABLE RETIREMENT YEAR.. 6 - 2 0 3 5 NET SALVAGE PERCENT.. - 15 1985 1988 1989 1990 1991 1992 1993 1994 1996 2005 2007 21,306,510.39 12,313.64 6,382.64 285,435.30 4,099.77 203,040.48 908,026.87 61,332.60 10,514.58 1,122.85 1,059,381.26 13,472,447 7,333 3,715 162,126 2,268 109,248 473,788 30,969 4,925 272 182,646 14,990,318 8,159 4,134 180,392 2,524 121,556 527,167 34,458 5,480 303 203,224 ~i-263 FUTURE BOOK ACCRUALS (5) 6,779 6,464 3,432 143,703 2,317 51,718 259,295 139,701 38,518 242,197 17,120 222,800 82,885 39,418 751,201 662,258 490,719 558,654 214,649 9,788,855 9,512,169 6,002 3,206 147,859 2,191 111,940 517,064 36,074 6,612 989 1,015,065 REM. LIFE (6) 15.93 16.42 16.58 16.74 16.90 17.05 17.20 17.36 17.51 17.66 17.80 18.37 18.64 19.02 19.13 19.25 19.35 19.45 19.51 18.02 18.68 18.90 19.12 19.34 19.55 19.77 19.98 20.40 22.16 22.51 ANAL ACCRUAL (7) 426 394 207 8,584 137 3,033 15,075 8,047 2,200 13,714 962 12,128 4,447 2,072 39,268 34,403 25,360 28,723 11,002 593,805 527,867 321 170 7,733 113 5,726 26,154 1,806 324 45 45,094 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos, IPC Page 305 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 314.00 TURBOGENERATOR UNITS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 45-S1 PROBABLE RETIREMENT YEAR.. 6-2035 NET SALVAGE PERCENT.. - 15 2008 2010 2011 25,101. 96 42,099.67 1,879,159.04 25,804,521.05 127,083,634.85 3,364 2,019 23,166 14,478,286 60,326,818 ALLOC. BOOK RESERVE (4 ) 3,743 2,246 25,776 16,109,480 60,804,962 FUTURE BOOK ACCRUALS (5) 25,124 46,168 2,135,257 13,565,719 85,341,218 REM. LIFE (6) 22.67 22.98 23.08 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 19.2 ~i-264 ANAL ACCRUAL (7) 1,108 2,009 92,515 710,985 4,436,359 3.49 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 306 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 315.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) JIM BRIDGER INTERIM SURVIVOR CURVE.. IOWA 60-81.5 PROBABLE RETIREMENT YEAR.. 6-2034 NET SALVAGE PERCENT.. - 1 1974 1977 1979 1980 1982 1983 1984 1986 1990 1991 1992 1993 1994 1995 1996 1997 1999 2001 2003 2004 2005 2006 2007 2008 2009 2010 2011 16,184,869.35 2,428.61 8,066,881.00 34,786.82 162.18 139,948.89 27,142.38 4,683.24 7,417.61 11 7.92 12,444.04 8,358.58 24,355.03 56,750.87 21,364.05 7,031.54 7,331.89 47,876.60 13,673.35 24,564.89 68,021.77 211,540.21 185,085.29 423,452.14 920,035.27 600,123.01 68,024.35 27,168,470.88 10,429,043 1,513 4,897,574 20,831 94 80,040 15,267 2,538 3,675 57 5,839 3,803 10,716 24,088 8,723 2,750 2,593 14,953 3,630 5,890 14,446 3B,755 28,132 49,894 75,268 25,542 746 15,766,400 14,258,987 2,069 6,696,151 28,481 129 109,434 20,874 3,470 5,025 78 7,983 5,200 14,651 32,934 11,926 3,760 3,545 20,444 4,963 8,053 19,751 52,987 38,463 68,217 102,909 34,922 1,020 21,556,426 VALMY UNIT #1 AND COMMON INTERIM SURVIVOR CURVE.. IOWA 60 -Sl . 5 PROBABLE RETIREMENT YEAR.. 6-2031 NET SALVAGE PERCENT.. - 1 1981 1983 1986 1988 1989 12,890,371.54 2,713.41 128,686.00 1,816.54 99,640.82 7,982,638 1,633 73,704 1,001 53,756 9,573,461 1,958 88,392 1,200 64,469 111-265 FUTUE BOOK ACCRUALS (5) 2,087,731 384 1,451,399 6,654 35 31,915 6,540 1,260 2,467 41 4,585 3,243 9,947 24,384 9,651 3,342 3,860 27,911 8,847 16,758 48,951 "160,668 148,473 359,470 826,326 571,202 67,685 5,883,730 3,445,B14 782 41,581 634 36,168 REM. LIFE (6) 18.60 19.09 19.41 19.57 19.88 20.03 20.17 20.46 21.00 21.12 21. 24 21. 36 21. 48 21.59 21.69 21.79 21. 99 22.16 22.32 22.39 22.46 22.52 22.58 22.64 22.69 22.73 22.76 17.61 17.84 18.17 18.38 18.48 ANAL ACCRUAL (7 ) 112,244 20 74,776 340 2 1,593 324 62 117 2 216 152 463 1,129 445 153 176 1,260 396 748 2,179 7,134 6,575 15,878 36,418 25,130 2,974 290,906 195,674 44 2,288 34 1,957 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos. IPC Page 307 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 315.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) VALMY UNIT #1 AN COMMON INTERIM SURVIVOR CURVE.. IOWA 60-S1. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 031 NET SALVAGE PERCENT.. -1 1991 1992 1993 1994 1995 1996 1998 1999 2007 2008 2010 2011 174,294.55 43,466.53 13,005.66 11,594.90 23,049.42 52,468.28 76,514.24 76,214.36 14,544.06 207,301.45 64,327.15 3,962.41 13,883,971. 32 89,684 21,786 6,335 5,473 10,523 23,083 30,931 29,304 2,470 27,493 3,117 50 8,362,981 107,557 26,128 7,597 6,564 12,620 27,683 37,095 35,144 2,962 32,972 3,738 60 10,029,601 VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 60-S1. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 035 NET SALVAGE PERCENT.. - 1 1985 1986 1988 1989 1990 1991 1992 1993 1995 1996 2007 2008 13,201,374.31 529,371.11 1,816.53 99,640.81 1,924.35 250,182.94 43,466.53 13,005.66 1,103.82 38,007.98 94,989.11 13,943.57 14,288,826.72 55,341,268.92 7,170; 563 281,998 927 49,671 935 118,373 19,981 5,795 458 15,164 13,915 1,590 7,679,370 31,808,751 8,876,374 349,083 1,148 61,487 1,157 146,533 24,734 7,174 567 18,771 17,225 1,968 9,506,222 41,092,249 FUTURE BOOK ACCRUALS (5) 68,481 17,774 5,538 5,147 10,660 25,310 40,184 41,833 11,727 176,403 61,232 3,942 3,993,210 4,457,014 185,582 687 39,150 786 106,152 19,167 5,962 548 19,617 78,714 12 1115 4,925,493 14,802,433 REM. LIFE (6) 18.67 18.76 18.85 18.94 19.02 19.10 19.24 19.31 19.74 19.78 19.84 19.86 21. 04 21.19 21.49 21.63 21.77 21.91 22.04 22.17 22.42 22.53 23.52 23.58 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 19.8 111-266 ANAL ACCRUAL (7) 3,668 947 294 272 560 1,325 2,089 2,166 594 8,918 3,086 198 224,114 211,835 8,758 32 1,810 36 4,845 870 269 24 871 3,347 514 233,211 748,231 1. 35 Exhibit No.1 Case No. IPC-E-12-08 J. Spanos, ¡PC Page 308 of 491 IDAHO POWER COMPANY ACCOUNT 316.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULTED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2 ) ALLOC. BOOK RESERVE (4 ) CALCULATED ACCRUED (3 ) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) JIM BRIDGER INTERIM SURVIVOR CURVE. .IOWA 45-RO.5 PROBABLE RETIREMENT YEAR. .6-2034 NET SALVAGE PERCENT..-2 1974 234,553.92 139,221 133,661 105,584 17.20 6,1391979815,662.20 453,418 435,310 396,666 17.95 22,0981980149,487.30 81,B77 78,607 73,870 18.09 4,08319821,163.20 617 592 594 18.35 32198313,999.64 7,306 7,014 7,265 18.48 39319848,156.81 4,182 4,015 4,305 18.60 2311986182,997.34 90,337 86,729 99,928 18.83 5,3071987480,339.94 232,249 222,974 266,973 18.94 14,0961988270,106.46 127,706 122,606 152,903 19.05 8,0261989154,613.45 71,419 68,567 89,139 19.15 4,655199013,523.00 6,093 5,850 7,944 19.25 4131991410,208.97 180,060 172,869 245,544 19.34 12,696199294,029.23 40,115 38,513 57,397 19.43 2,9541993210.47 87 84 131 19.52 7199712,500.00 4,449 4,271 8,479 19.83 428199818,239.49 6,193 5,946 12,659 19.90 636200115,620.96 4,452 4,274 11,659 20.09 580200234,668.43 9,165 8,799 26,563 20.15 1,3182003114,947.93 27,907 26,792 90,454 20.20 4,4782004325,035.95 71,290 68,443 263,094 20.26 12,98620054,845.53 943 905 4,037 20.31 1992006257,054.48 43,233 41,506 220,689 20.36 10,83920071,849,868.16 257,802 247,506 1,639,359 20.41 80,3212008387,866.59 42,154 40,470 355,153 20.46 17,3582010476,013.84 18,630 17,886 467,648 20.55 22,757 6,325,713.29 1,920,905 1,844,189 4,608,039 233,030 VALMY UNIT #1 AND COMMON INTERIM SURVIVOR CURVE. .IOWA 45-RO.5 PROBABLE RETIREMENT YEAR. .6-2031 NET SALVAGE PERCENT. .-2 1981 1,303,472.69 745,474 817,714 1982 10,001. 23 5,638 6,184 1985 10,143.48 5,451 5,979 1988 20,546.42 10,432 11,443 1989 26,280.53 13,058 14,323199052,090.38 25,304 27,756 1991 88,534.46 41,961 46,027 ~i-267 511,828 4,017 4,367 9,514 12,483 25,376 44,278 16.43 16.53 16.80 17.05 17.13 17.20 17.27 31,152 243 260 558 729 1,475 2,564 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos,lPC Page 309 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 316.00 MISCELLANEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) VALMY UNIT #1 AN COMMON INTERIM SURVIVOR CURVE.. IOWA 45-RO. 5 PROBABLE RETIREMENT YEAR. . 6-2031 NET SALVAGE PERCENT.. -2 1992 1993 1994 1995 1996 1997 1998 2003 2006 2007 2008 2010 2011 82,098.43 135,369.50 155,247.58 160,497.49 91, 911 .15 56,665.36 5,532.90 96,229.61 104,773.20 119,027.53 810,871.08 402,167.42 500.14 3,731,960.58 37,891 60,750 67,583 67,557 37,288 22,095 2,065 26,048 19,839 18,805 100,375 18,127 6 1,325,747 VALMY UNIT # 2 INTERIM SURVIVOR CURVE.. IOWA 45 - RO . 5 PROBABLE RETIREMENT YEAR.. 6 - 2 035 NET SALVAGE PERCENT.. - 2 1985 1986 1988 1989 1990 1991 1992 1993 1994 1995 1996 812,45.5.32 115,005.30 18,770.85 46,920.14 61,863.63 92,782.05 94,666.45 135,369.39 148,569.17 153,973.79 5,677.09 1,686,053.18 11,743,727.05 400,612 55,589 8,683 21,186 27,241 39,743 39,392 54,611 57,958 57,885 2,052 764,952 4,011,604 ALLOC. BOOK RESERVE (4 ) 41,563 66,637 74,132 74,104 40,901 24,236 2,265 28,572 21,761 20,627 110,102 19,884 7 1,454,218 583,700 80,994 12,651 30,868 39,691 57,906 57,395 79,569 84,446 84,340 2,990 1,114,551 4,412,958 FUTE BOOK ACCRUALS (5) 42,178 71,440 84,220 89,604 52,848 33,563 3,378 69,582 85,107 100,781 716,987 390,327 504 2,352,382 245,004 36,311 6,495 16,990 23,410 36,731 39,165 58,507 67,095 72,714 2,801 605,223 7,565,644 REM. LIFE (6) 17.34 17.40 17.46 17.52 17.58 17.63 17.68 17.91 18.03 18.06 18.10 18.17 18.19 19.32 19.44 19.68 19.79 19.89 20.00 20.10 20.19 20.28 20.37 20.45 COMPOSITE REMAINING LIFE AND ANNUAL ACCRUAL RATE, PERCENT .. 19.0 ~i-268 ANAL ACCRUAL (7) 2,432 4,106 4,824 5,114 3,006 1,904 191 3,885 4,720 5,580 39,613 21,482 28 133,866 12,681 1,868 330 859 1,177 1,837 1,949 2,898 3,308 3,570 137 30,614 397,510 3.38 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, fPC Page 310 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 316.10 MISCELLANEOUS POWER PLANT EQUIPMENT - AUTOMOBILES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) JIM BRIDGER SURVIVOR CURVE.. IOWA 12 -L2 NET SALVAGE PERCENT.. +15 2004 5B,859.95 23,848 58,859.95 23,848 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 6.3 ALLOC. BOOK RESERVE (4) 19,748 19,748 ~i-269 FUTURE BOOK ACCRUALS (5) 30,283 30,283 REM. LIFE (6 ) 6.28 ANAL ACCRUAL (7 ) 4,822 4,822 8.19 Exhibit No. 1 Case No. IPC-E.12-Q8 J. Spanos, IPC Page 311 of 491 IDAHO POWER COMPANY ACCOUNT 316.40 MISCELLAEOUS POWER PLANT EQUIPMENT - SMAL TRUCKS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) JIM BRIDGER SURVIVOR CURVE.. IOWA 12-L2 NET SALVAGE PERCENT.. +15 1992 29,192.50 18,714 24,814 1993 23,120.55 14,428 19,652 1994 34,267.93 20,778 29,128 1995 22,235.46 13,088 18,900 1996 36,895.64 21,064 31,361 1997 16,905.64 9,352 14,255 115 4.19 27 1999 16,125.67 8,373 12,763 944 4.67 202 2001 22,029.06 10,658 16,246 2,479 5.17 479 200,772.45 116,455 167,119 3,538 708 VALMY UNIT #1 AND COMMON SURVIVOR CURVE. .IOWA 12-L2 NET SALVAGE PERCENT..+15 1997 18,003.44 9,960 15,303 2009 21,798.47 3,011 9,088 9,441 10.05 939 39,801.91 12,971 24,391 9,441 939 240,574.36 129,426 191,510 12,979 1,647 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .7.9 0.68 ~i-270 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 312 of 491 IDAHO POWER COMPANY ACCOUNT 316.50 MISCELLAEOUS POWER PLANT EQUIPMENT - MISCELLANEOUS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) JIM BRIDGER SURVIVOR CURVE.. IOWA 12 - L2 NET SALVAGE PERCENT.. +15 1992 3,175.58 2,036 2,699 2003 15,781.52 6,897 11,493 1,921 5.83 33020064,403.80 1,401 2,335 1,409 7.51 188 23,360.90 10,334 16,527 3,330 518 VALMY UNIT #1 AND COMMON SURVIVOR CURVE..IOWA 12-L2 NET SALVAGE PERCENT..+15 1997 14,159.03 7,833 12,035 2009 3,852.20 532 3,972 697- 18,011.23 8,365 16,007 697- 41,372.13 18,699 32,534 2,633 518 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .5.1 1.25 ~i-271 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, ~PC Page 313 of 491 YEA (1) IDAHO POWER COMPANY ACCOUNT 316.60 MISCELLAEOUS POWER PLANT EQUIPMENT - HYDRAULIC TRUCKS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) VALMY UNIT #1 AND COMMON SURVIVOR CURVE.. IOWA 20 - L2 NET SALVAGE PERCENT.. +15 2009 106,049.59 8,924 106,049.59 8,924 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 18.0 83,946 ALLOC. BOOK RESERVE (4 ) 6,196 6,196 ~i-272 FUTURE BOOK ACCRUALS (5) REM. LIFE (6) 83,946 18.02 ANAL ACCRUAL (7) 4,658 4,658 4.39 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 314 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 316.70 MISCELLANEOUS POWER PLANT EQUIPMENT - LARGE TRUCKS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) JIM BRIDGER SURVIVOR CURVE.. IOWA 20-L2 NET SALVAGE PERCENT.. +15 1992 2005 21,497.67 58,966.45 10,936 14,084 ALLOC. BOOK RESERVE (4 ) 18,273 25,949 44,222 FUTURE BOOK ACCRUALS (5) REM. LIFE (6 ) 80,464.12 25,020 24,17314.38 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 14.4 24,173 ~i-273 ANAL ACCRUAL (7) 1,681 1,681 2.09 Exhibit No. 1 Case No. IPC-E,12-08 J. Spanos, IPC Page 315 of 491 IDAHO POWER COMPANY ACCOUNT 316.80 MISCELLANEOUS POWER PLAT EQUIPMENT - POWER OPERATED EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7 ) JIM BRIDGER SURVIVOR CURVE.. IOWA 20-01 NET SALVAGE PERCENT.. +30 1986 8,826.62 3,862 3,868 2,310 7.50 308 1987 207.94 87 87 58 8.00 7 1993 337.00 106 106 130 11.00 12 1995 148,779.60 41,658 41,727 62,419 12.00 5,202 1996 93,468.22 24,535 24,575 40,852 12.50 3,268 1998 72,475.01 16,488 16,515 34,217 13.50 2,535200112,255.63 2,145 2,149 6,430 15.00 4292002289.04 46 46 156 15.50 10 2004 248,203.06 30,405 30,455 143,287 16.50 8,684 2007 43,461. 44 3,042 3,047 27,376 18.00 1,5212008165,377.77 8,682 8,696 107,068 18.50 5,787 2011 328,378.32 1,379 1,381 228,484 19.88 11,493 1,122,059.65 132,435 132,653 652,789 39,256 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .16.6 3.50 ~i-274 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 316 of 491 IDAHO POWER COMPANY ACCOUNT 316.90 MISCELLAEOUS POWER PLANT EQUIPMENT - TRAILERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3) JIM BRIDGER SURVIVOR CURVE.. IOWA 35-S1 NET SALVAGE PERCENT.. +15 20i1 13,977.04 13,977.04 ALLOC. BOOK RESERVE (4 ) 85 85 FUTUE BOOK ACCRUALS (5) REM. LIFE (6) 11,880 34.75 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 34.7 11,880 ~i-275 ANAL ACCRUAL (7) 342 342 2.45 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 317 of 491 YEAR (l ) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) HAGERMA MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 6-2028 NET SALVAGE PERCENT.. -25 1977 1983 1984 1991 1993 1994 1995 1996 2004 2005 2008 2009 113.20 742,578.00 2,687.50 3,103.17 21,965.67 233,330.20 119,276.95 38,242.52 20,724.82 373,075.26 18,444.70 69,955.25 1,643,497.24 94 575,284 2,053 2,089 14,071 145,309 72,006 22,336 7,525 121,235 3,448 9,170 974,620 MILNER DAM INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 6-2067 NET SALVAGE PERCENT.. -25 1992 1997 803,959.31 10,264.94 814,224.25 258,041 2,594 260,635 NIAGAR SPRINGS HATCHERY INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. -25 1964 1966 1970 1973 1974 1977 1984 1985 1987 298.22 510,627.13 3,245.14 7,267.13 30,226.09 41,362.58 5,342.93 4,218.50 98,211. 01 217 364,262 2,220 4,797 19,697 25,847 2,953 2,282 50,733 ALLOC. BOOK RESERVE (4) 83 509,265 1,817 1,849 12,456 128,634 63,743 19,773 6,661 107,322 3,052 8,118 862,774 290,706 2,922 293,628 200 335,902 2,047 4,424 18,163 23,835 2,723 2,104 46,783 ~i-276 FUTURE BOOK ACCRUALS (5) 58 418,957 1,542 2,030 15,001 163,029 85,353 28,030 19,245 359,022 20,004 79,326 1,191,598 REM. LIFE (6) 16.67 16.73 16.74 16.80 16.81 16.82 16.83 16.83 16.88 16.88 16.89 16.90 714,244 52.45 9,909 53.00 724,152 173 302,382 2,009 4,660 19,619 27,869 3,956 3,169 75,981 31.52 31.67 31.95 32.14 32.20 32.37 32.71 32.76 32.84 ANAL ACCRUAL (7 ) 3 25,042 92 121 892 9,693 5,071 1,665 1,140 21,269 1,184 4,694 70,866 13,618 187 13,805 5 9,548 63 145 609 861 121 97 2,314 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 318 of 491 IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) ALLOC. BOOK RESERVE (4) CALCULATED ACCRUED (3 ) NIAGAR SPRINGS HATCHERY INTERIM SURVIVOR CURVE.. IOWA 105 - R2 . 5 PROBABLE RETIREMENT YEAR.. 6 - 2 04 5 NET SALVAGE PERCENT.. -25 FUTURE BOOK ACCRUALS (5) REM. LIFE ( 6) ANAL ACCRUAL (7) 1988 21,445.88 10,802 9,961 16,846 32.88 512198919,519.48 9,569 8,824 15,575 32.92 47319907,270.29 3,464 3,194 5,894 32.96 179199279,609.82 35,603 32,831 66,681 33.03 2,019199366,961. 11 28,917 26,666 57,036 33.06 1,72519943,310,669.79 1,376,949 1,269,743 2,868,594 33.09 86,691199510,766.67 4,297 3,962 9,496 33.13 287199625,776.60 9,840 9,074 23,147 33.16 698199729,380.42 10,686 9,854 26,872 33.19 8101998135,566.38 46,760 43,119 126,339 33.22 3,8031999179,262.27 58,339 53,797 170,281 33.24 5,123200057,587.65 17,554 16,187 55,797 33.27 1,6772001158,280.00 44,845 41,353 156,497 33.30 4,700200225,910.60 6,767 6,240 26,148 33.32 785200492,848.31 19,766 18,227 97,833 33.37 2,932200535,056.32 6,550 6,040 37,780 33.40 1,131200621,549.30 3,444 3,176 23,761 33.42 711200768,162.76 8,940 8,244 76,959 33.44 2,3012008324.63 33 30 375 33.46 11201018,492.41 657 606 22,510 33.50 6722011321,375.51 2,977 2,745 398,974 33.51 11,906 5,386,614.93 2,179,767 2,010,056 4,723,213 142,909 HELLS CANYON MAINTENANCE SHOP INTERIM SURVIVOR CURVE. .IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR. .7 -2045 NET SALVAGE PERCENT. .-25 1956 338.56 263 27619616,551.32 4,885 5,12019861,057,202.02 558,401 585,232199134,886.84 16,097 16,8701993370.76 160 1681994103,683.30 43,053 45,122 1995 14,173.81 5,649 5,9201996147,882.56 56,360 59,068199732,997.98 11,981 12,557 2004 4,474.72 951 9972005150,670.25 28,143 29,495 ~i-277 148 3,069 736,270 26,738 296 84,482 11,797 125,785 28,691 4,597 158,843 30.87 31. 34 32.88 33.07 33.14 33.17 33.20 33.24 33.27 33.45 33.47 5 98 22,393 809 9 2,547 355 3,784 862 137 4,746 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 319 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTUES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) HELLS CANYON MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. -25 2006 2007 2008 2009 2010 51,601.83 747,390.10 1,256.80 10,578.43 19,110.20 2,383,169.48 8,230 97,815 127 730 677 833,522 RAPID RIVER HATCHERY INTERIM SURVIVOR CURVE.. IOWA 105 -R2. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 04 5 NET SALVAGE PERCENT.. -25 1964 1965 1966 1968 1969 1970 1971 1972 1974 1975 1976 1977 1980 1981 1983 1984 1985 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 240,150.74 44,005.23 67,609.04 14,074.71 97,874.44 575.88 1,097.21 166.16 17,744.71 18,470.46 21,884.96 B,198.19 43,311.42 56,504.55 32,227.78 28,045.36 65,424.99 16,265.07 31,739.00 2,404.83 66,523.70 1,300.17 38,069.69 33,772.12 89,693.73 170,076.80 43,912.32 174,581 31,701 48,230 9,841 67,702 394 742 111 11,564 11,876 13,874 5,123 25,802 33,079 18,176 15,502 35,397 8,402 15,986 1,179 31,694 601 17,025 14,584 37,305 67,880 16,764 ALLOC. BOOK RESERVE (4 ) 8,625 102,515 133 765 710 873,573 216,809 39,369 59,896 12,221 84,078 489 921 138 14,361 14,749 17,230 6,362 32,043 41,080 22,572 19,252 43,959 10,434 19,853 1,464 39,360 746 21,143 18,112 46,328 84,299 20,819 ~i-278 FUTUE BOOK ACCRUALS (5) 55,877 831,723 1,438 12,458 23,178 2,105,389 83,379 15,638 24,615 5,372 38,265 231 450 70 7,820 8,339 10,126 3,886 22,096 29,550 17,712 15,805 37,822 9,897 19,821 1,542 43,794 879 26,444 24,104 65,789 128,297 34,071 REM. LIFE (6) 33.50 33.52 33.54 33.56 33.58 31.52 31.59 31.67 31.81 31.88 31.95 32.02 32.08 32.20 32.26 32.32 32.37 32.53 32.58 32.67 32.71 32.76 32.84 32.88 32.92 32.96 32.99 33.03 33.06 33.09 33.13 33.16 ANAL ACCRUAL (7) 1,668 24,813 43 371 690 63,330 2,645 495 777 169 1,200 7 14 2 243 258 313 120 679 907 542 483 1,155 301 603 47 1,329 27 801 729 1,988 3,873 1,027 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 320 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) RAPID RIVER HATCHERY INTERIM SURVIVOR CURVE.. IOWA 105 -R2. 5 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. -25 1997 1999 2000 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 54,946.23 75,578.20 9,999.49 28,791. 56 30,889.54 844,724.31 19,675.06 84,455.84 1l0,099.39 28.19 4,951.25 18,945.36 6,902.49 2,541,110.17 19,984 24,596 3,048 7,519 7,334 179,831 3,676 13,499 14,441 3 342 673 64 990,125 AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 105 - R2 .5 PROBABLE RETIREMENT YEAR.. 2-2055 NET SALVAGE PERCENT.. -25 1924 1927 1928 1929 1937 1938 1940 1941 1943 1950 1954 1956 1957 1960 1968 1969 1970 1971 1972 22,337.73 7,941.92 2,642.12 506.13 980.24 49.01 121. 60 1,193.12 32.35 430.79 428.21 9,941. 64 3,943.39 91.40 1,495.44 416.70 5,545.50 117.97 101.58 19,779 6,912 2,286 435 802 40 98 951 25 322 309 7,061 2,776 63 938 258 3,392 71 60 ALLOC. BOOK RESERVE (4) 24,818 30,545 3,785 9,338 9,108 223,329 4,565 16,764 17,934 4 425 836 79 1,229,619 21,618 7,555 2,499 475 877 44 107 1,039 27 352 338 7,718 3,034 69 1,025 282 3 (707 78 66 111-279 FUTURE BOOK ACCRUALS (5) 43,865 63,927 8,714 26,652 29,504 832,576 20,029 88,806 119,690 32 5,764 22,846 8,549 1,946,769 6,304 2,373 804 157 349 18 45 452 13 187 198 4,709 1 (895 45 844 239 3,224 70 61 REM. LIFE (6) 33.19 33.24 33.27 33.32 33.35 33.37 33.40 33.42 33.44 33.46 33.48 33.50 33.51 29.54 30.54 30.86 31.18 33.57 33.85 34.38 34.64 35.14 36.72 37.50 37.86 38.03 38.52 39.65 39.77 39.89 40.01 40.12 ANAL ACCRUAL (7) 1,322 1,923 262 800 885 24,950 600 2,657 3,579 1 172 682 255 58,822 213 78 26 5 10 1 1 13 5 5 124 50 1 21 6 81 2 2 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 321 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 2-2055 NET SALVAGE PERCENT.. -25 1978 1979 1982 1984 1986 1987 1989 1990 1991 1993 1995 1997 1998 1999 2000 2002 2007 2009 11,172,940.95 74,549.88 3,844.73 5,880.91 87,517.08 369.07 14,997.39 50,652.04 2,555.84 7,919.37 88,999.26 47,081. 04 55,339.67 33,194.32 18,483.95 47,830.45 36,733.99 0.01 11,807,206.79 6,052,941 39,668 1,929 2,822 40,006 164 6,303 20,624 1,007 2,896 29,894 14,314 15,889 8,952 4,651 10,222 3,851 6,302,711 6,615,838 43,357 2,108 3,084 43,726 179 6,889 22,542 1,101 3,165 32,674 15,645 17,367 9,784 5,084 11,173 4,209 6,888,835 BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. -25 1960 1962 1963 1964 1965 1967 1969 1970 1971 1972 1973 1976 1978 1980 5,482,909.73 9,308.41 6,272.71 188.71 132.36 1,724.88 296.17 322.96 1,705.46 245.52 22,221. 61 18,472.91 327.00 15,826,006.94 4,122,874 6,883 4,598 137 95 1,217 205 221 1,152 164 14,652 11,700 201 9,417,463 4,948,221 8,261 5,518 164 114 1,461 246 265 1,383 197 17,585 14,042 241 11,302,719 ~i-280 FUTUE BOOK ACCRUALS (5) 7,350,339 49,830 2,698 4,267 65,670 282 11,858 40,773 2,094 6,734 78,575 43,206 51,808 31,708 18,021 48,615 41,708 7,870,173 1,905,416 3,375 2,322 71 51 695 124 138 749 110 10,192 9,049 168 8,479,789 REM. LIFE (6) 40.75 40.84 41.10 41.27 41. 42 41.50 41.64 41.71 41.77 41.90 42.02 42.13 42.19 42.24 42.29 42.38 42.60 31. 25 31.42 31. 50 31.58 31.66 31.81 31.95 32.02 32.09 32.15 32.21 32.39 32.50 32.60 ANAL ACCRUAL (7) 180,376 1,220 66 103 1,585 7 285 978 50 161 1,870 1,026 1,228 751 426 1,147 979 192,902 60,973 107 74 2 2 22 4 4 23 3 316 279 5 260,116 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 322 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 105 - R2 . 5 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. -25 1982 1983 1984 1985 1986 1987 1989 1990 1991 1992 1993 1994 1995 1996 1997 2001 2004 2005 2006 2007 2008 2009 2010 2011 4,501.05 56,078.26 20,368.88 573.66 1,179.02 546.52 89,131. 30 152,060.52 87,913.94 105,545.02 39,777.54 7,714,214.34 81,339.69 124,115.41 131,355.96 40,556.50 20,295.99 20,316.37 8,203.29 475,652.48 700,181. 58 52,696.24 132,137.84 9,930.61 31,438,807.38 2,584 31,591 11,243 310 623 282 43,629 72,352 40,565 47,154 17,151 3,203,231 32,417 47,302 47,694 11,469 4,312 3,795 1,308 62,251 70,535 3,635 4,684 92 17,341,771 3,101 37,915 13,494 372 748 338 52,363 86,836 48,686 56,594 20,584 3,844,477 38,906 56,771 57,242 13,765 5,175 4,555 1,570 74,713 84,655 4,363 5,622 110 20,813,373 BLISS INTERIM SURVIVOR CURVE.. IOWA 105 - R2 .5 PROBABLE RETIREMENT YEAR.. 5 - 2 0 3 3 NET SALVAGE PERCENT.. - 2 5 1950 1953 1955 1956 1957 1961 1965 1967 281,912.71 550.16 18,407.81 5,042.59 183.55 2,337.26 208.17 18,184.50 258,373 497 16,478 4,491 163 2,023 176 15,112 239,858 461 15,297 4,169 151 1,878 163 14,029 111-281 FUTURE BOOK ACCRUALS (5) 2,525 32,183 11,967 345 726 345 59,051 103,240 61,207 75,338 29,138 5,798,291 62,768 98,373 106,953 36,931 20,195 20,841 8,684 519,853 790,572 61,508 159,551 12,303 18,485,136 112,533 226 7,713 2,134 78 1,044 97 8,702 REM. LIFE (6) 32.70 32.74 32.79 32.83 32.88 32.92 33.00 33.03 33.07 33.10 33.14 33.17 33.20 33.24 33.27 33.38 33.45 33.47 33.50 33.52 33.54 33.56 33.58 33.59 20.49 20.62 20.70 20.74 20.78 20.92 21.04 21.10 ANAL ACCRUAL (7) 77 983 365 11 22 10 1,789 3,126 1,851 2,276 879 174,805 1,891 2,959 3,215 1,106 604 623 259 15,509 23,571 1,833 4,751 366 564,811 5,492 11 373 103 4 50 5 412 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 323 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) BLISS INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -25 1968 1971 1972 1973 1976 1978 1979 1981 1982 1983 1984 1990 1991 1993 1994 1995 1996 1997 2001 2004 2007 2008 2009 2010 1,540.47 4,147.85 123.83 3,443.77 4,622.38 3,187.49 734.84 9,505.67 23,109.14 16,582.06 17,832.87 1,306.93 8,760.40 1,483.67 77,740.62 19,394.39 43,320.84 56,024.54 28,951.99 17,454.29 52,708.55 247,915.96 72,164.69 676.70 1,039,560.69 1,270 3,336 99 2,720 3,539 2,385 543 6,839 16,389 11,582 12,254 796 5,205 833 42,286 10,190 21,917 27,192 11,293 5,258 10,138 37,153 7,495 37 538,062 1,179 3,097 92 2,525 3,285 2,214 504 6,349 15,215 10,752 11,376 739 4,832 773 39,256 9,460 20,346 25,243 10,484 4,881 9,412 34,491 6,958 34 499,505 CASCADE INTERIM SURVIVOR CURVE.. IOWA 105 -R2. 5 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. -25 1983 1984 1985 1986 1987 1991 1993 1994 6,964,936.11 173,999.08 31,836.73 22,887.38 8,674.08 16,620.91 74,929.41 11,293.24 3,176,881 77,495 13,825 9,683 3,569 6,018 25, ILL 3,627 3,433,546 83,756 14,942 10,465 3,857 6,504 27,140 3,920 111-282 FUTURE BOOK ACCRUALS (5 ) 747 2,088 63 1,780 2,493 1,770 414 5,533 13,672 9,976 10,915 895 6,118 1,081 57,920 14,783 33,805 44,787 25,706 16,937 56,474 275,404 83,248 812 799,946 5,272,624 133,743 24,854 18,144 6,985 14,272 66,522 10,197 REM. LIFE (6 ) 21.12 21.20 21.22 21.24 21. 31 21.35 21. 37 21.41 21.42 21.44 21.46 21.55 21.56 21.59 21.60 21. 61 21.62 21.63 21. 67 21.70 21. 72 21.73 21.74 21.74 46.14 46.25 46.36 46.46 46.56 46.94 47.12 47.20 ANAL ACCRUAL (7 ) 35 98 3 84 117 83 19 258 638 465 509 42 284 50 2,681 684 1,564 2,071 1,186 781 2,600 12,674 3,829 37 37,242 114,274 2,892 536 391 150 304 1,412 216 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 324 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) CASCADE INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. -25 1995 1996 1997 33,224.61 14,304.52 11,447.66 7,364,153.73 10,194 4,176 3,169 3,333,748 CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 105 -R2 .5 PROBABLE RETIREMENT YEAR.. 6-2017 NET SALVAGE PERCENT.. -25 1937 1939 1940 1941 1960 1964 1967 1983 1986 1987 1989 1990 1993 1996 1997 33,539.09 1,836.27 125.60 36.69 230.44 1,001.60 13,539.80 71,256.88 2,400.92 2,055.68 15,582.33 15,224.86 18,324.53 8,767.14 9,356.87 193,278.70 38,629 2,111 144 42 257 1,107 14,856 73,208 2,416 2,052 15,273 14,773 17,148 7,816 8,174 198,006 HELLS CANYON INTERIM SURVIVOR CURVE.. IOWA 105-R2,5 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. - 2 5 1967 1969 1970 1975 1979 1,214,238.02 3,158.97 427.57 2,464.98 1,382.73 856,857 2,183 292 1,583 837 ALLOC. BOOK RESERVE (4) 11,018 4,513 3,425 3,603,087 38,967 2,129 145 42 259 1,117 14,986 73,848 2,437 2,070 15,406 14,902 17,298 7,884 8,245 199,736 830,899 2,117 283 1,535 812 111-283 FUTURE BOOK ACCRUALS (5) 30,513 13,367 10,885 5,602,105 2,957 166 12 3 29 135 1,939 15,223 564 500 4,071 4,129 5,608 3,075 3,451 41,862 686,899 1,832 251 1,546 917 REM. LIFE (6) 47.28 47.36 47.43 5.86 5.87 5.87 5.88 5.93 5.94 5.95 5.97 5.97 5.97 5.98 5.98 5.98 5.98 5.98 31.81 31.95 32.02 32.33 32.55 ANAL ACCRUAL (7 ) 645 282 229 121,331 505 28 2 1 5 23 326 2,550 94 84 681 690 938 514 577 7, 018 21,594 57 8 48 28 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 325 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) HELLS CANYON INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. -25 1985 1987 1988 1990 1991 1993 1994 1995 1996 1997 1998 2000 2002 2003 2005 2008 2010 2011 158.22 9,662.13 21,020.36 29,246.68 20,572.14 26,254.68 42,900.00 122,200.30 46,587.03 39,524.98 90,758.11 12,792.26 11,247.19 692,414.18 1,060.55 9,821.99 173,457.81 173,974.87 2,745,325.75 85 4,983 10,569 13,916 9,492 11,320 17,814 48,701 17,755 14,351 31,232 3,892 2,929 164,085 198 989 6,149 1,607 1,221,819 LOWER MAAD INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -25 1919 1922 1929 1941 1945 1946 1948 1949 1950 1951 1952 1954 1955 1956 36,025.40 5,013.67 220.72 74.58 45.36 316.80 312,274.33 1,634.79 2,704.60 2,014.70 12,791.89 1,975.41 208.01 1,195.24 36,498 5,040 218 71 42 295 288,643 1,505 2,479 1,838 11,618 1,777 186 1,064 ALLOC. BOOK RESERVE (4 ) 82 4,832 10,249 13,494 9,204 10,977 17,274 47,226 17,217 13,916 30,286 3,774 2,840 159,114 192 959 5,963 1,558 1,184,804 32,470 4,484 194 63 37 262 256,788 1,339 2,205 1,635 10,336 1,581 165 947 111-284 FUTUE BOOK ACCRUALS (5) 115 7,246 16,027 23,064 16,511 21,841 36,351 105,525 41,017 35,490 83,162 12,216 11,219 706,404 1,134 11,318 210,860 215,910 2,246,853 12,562 1,783 82 30 19 134 133,555 705 1,175 883 5,654 888 95 547 REM. LIFE (6) 32.83 32.92 32.96 33.03 33.07 33.14 33.17 33.20 33.24 33.27 33.30 33.35 33.40 33.43 33.47 33.54 33.58 33.59 18.14 18.47 19.14 20.02 20.25 20.30 20.40 20.45 20.49 20.54 20.58 20.67 20.70 20.74 ANAL ACCRUAL (7) 4 220 486 698 499 659 1,096 3,178 1,234 1,067 2,497 366 336 21,131 34 337 6,279 6,428 68,284 693 97 4 1 1 7 6,547 34 57 43 275 43 5 26 Exhibit No. 1 Case No. lPC-E-12-08 J. Spanos, IPC Page 326 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) LOWER MA INTERIM SURVIVOR CURVE.. IOWA i 0 5 - R2 . 5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -25 1958 1961 1965 1966 1968 1969 1970 1971 1972 1974 1980 1982 1984 1985 1991 1993 1994 1997 1998 2005 2008 2009 2011 953.83 799.35 61.93 392.26 629.10 92.34 946.18 9,864.56 591. 02 3,177.79 1,832.54 9,558.82 6,711.58 525.00 101,820.49 5,944.02 45,197.42 14,389.30 16,139.85 4,623.90 134,909.38 21,825.50 16,027.37 773,509.03 840 692 52 328 519 76 768 7,934 471 2,484 1,336 6,779 4,612 355 60,494 3,337 24,585 6,984 7,483 1,237 20,218 2,267 219 505,344 LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 105 -R2. 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 2 5 1919 1927 1929 1930 1935 1936 1937 1940 1941 4,657.67 1,036.71 33.30 210.25 257.16 99.23 594.35 63.41 374.95 4,719 1,028 33 207 249 96 572 60 356 ALLOC. BOOK RESERVE (4) 747 616 46 292 462 68 683 7,058 419 2,210 1,189 6,031 4,103 316 53,818 2,969 21,872 6,213 6,657 1,100 17,987 2,017 195 449,573 3,911 852 27 172 206 80 474 50 295 ~i-285 FUTURE BOOK ACCRUALS (5 ) 445 384 31 199 325 48 499 5,272 320 1,762 1,102 5,918 4,286 340 73,458 4,461 34,625 11,773 13,518 4,679 150,650 25,265 19,839 517,313 1,911 444 14 91 115 44 269 30 174 REM. LIFE (6) 20.82 20.92 21.04 21.07 21.12 21.15 21. 17 21. 20 21.22 21. 27 21.39 21. 42 21. 46 21. 47 21. 56 21.59 21. 60 21.63 21.64 21.71 21. 73 21.74 21.75 18.14 18.96 19.14 19.23 19.62 19.70 19.77 19.96 20.02 ANUAL ACCRUAL (7) 21 18 1 9 15 2 24 249 15 83 52 276 200 16 3,407 207 1,603 544 625 216 6,933 1,162 912 24,423 ios 23 1 5 6 2 14 2 9 Exhibit No. 1 Case No. IPC.E.12-08 J. Spanos, IPC Page 327 of 491 IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 3O,2011 ORIGINAL CALCULATED ALLOC.BOOK FUTURE BOOK REM.ANAL YEAR COST ACCRUED RESERVE ACCRUALS LIFE ACCRUAL (1 )(2)(3 )(4)(5 )(6)(7) LOWER SALMON INTERIM SURVIVOR CURVE..IOWA 105-R2.5 PROBABLE RETIREMENT YEAR. .5-2033 NET SALVAGE PERCENT. .-25 1943 3.14 3 2 1 20.14 1944 520.14 488 404 246 20.20 12 1946 407.73 380 315 195 20.30 10 1947 65.16 60 50 32 20.35 2 1949 270,179.67 248,677 206,081 131,644 20.45 6,437 1951 4,265.80 3,892 3,225 2,107 20.54 103 1952 275.56 250 207 137 20.58 7 1953 126.63 114 94 64 20.62 3 1954 393.90 354.293 199 20.67 10 1957 2,626.12 2,326 1,928 1,355 20.78 65 1958 7,260.66 6,396 5,300 3,775 20.82 181 1959 252.21 221 183 132 20.85 6 1964 3,163.24 2,686 2,226 1,728 21.01 82 1965 1,471.37 1,241 1,028 811 21.04 39 1966 2,018.81 1,690 1,401 1,123 21.07 53 1967 443.76 369 306 249 21. 10 12 1969 84.00 69 57 48 21.15 2 1970 201.88 164 136 116 21.17 5 1971 10,371.45 8,341 6,912 6,052 21.20 285 1978 7,289.76 5,454 4,520 4,592 21.35 215 1982 5,408.09 3,835 3,178 3,582 21. 42 167 1983 11,476.95 8,016 6,643 7,703 21. 44 359 1984 13,406.66 9,213 7,635 9,123 21.46 425 1985 148,902.17 100,611 83,377 102,750 21.47 4,786 1988 493.25 314 260 356 21.52 17 1989 9,277.07 5,787 4,796 6,801 21.53 316 1990 6,195.87 3,775 3,128 4,616 21.55 214 1991 12,982.39 7,713 6,392 9,836 21.56 456 1992 21,904.69 12,667 10,497 16,884 21.57 783 1993 96,557.06 54,204 44,919 75,777 21.59 3,510 1994 72,819.41 39,609 32,824 58,200 21.60 2,694 1995 23,464.60 12,329 10,217 19,114 21.61 884' 1996 27,437.70 13,881 11,503 22,794 21.62 1,054 1997 28,786.42 13,972 11,579 24,404 21.63 1,128 1998 10,742.75 4,981 4,128 9,301 21. 64 430 2002 5,532.24 2,006 1,662 5,253 21. 68 242 2003 15,716.41 5,235 4,338 15,307 21.69 706 2005 8,415.64 2,251 1,865 8,654 21.71 399 2006 18,980.29 4,391 3,639 20,086 21.71 925 2007 474,060.80 91,186 75,567 517,009 21.72 23,803 111-286 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 328 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -25 2008 2009 2010 1,365,739.18 74,940.28 33,912.40 2,805,900.34 204,673 7,783 1,846 900,773 169,614 6,450 1,530 746,479 MILNER INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 11 -2068 NET SALVAGE PERCENT.. -25 1992 1994 1995 1996 2005 2008 2009 9,373,406.47 71,898.34 37,485.91 2,659.26 9,094.16 9,868.22 21,468.87 9,525,881.23 2,958,599 20,821 10,355 697 1,085 618 909 2,993,084 3,388,011 23,843 11,858 798 1,242 708 1,041 3,427,501 OXBOW HATCHERY INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 2 5 1961 1962 1964 1965 1966 1971 1976 1985 1986 1987 1988 1989 1990 273,596.70 4,910.47 21,190.79 69,872.20 167,562.55 63.28 1,117.84 2,269.19 13,936.12 20,336.15 2,553.48 6,690.27 509.10 204,018 3,631 15,394 50,284 119,420 43 708 1,226 7,361 10,487 1,284 3,275 242 246,317 4,384 18,586 60,709 144,180 52 855 1,480 8,887 12,661 1,550 3,954 292 111-287 FUTURE BOOK ACCRUALS (5) 1,537,560 87,226 40,861 2,760,896 8,328,747 66,030 34,999 2,526 10,125 11,628 25,795 8,479,851 95,679 1,754 7,903 26,631 65,274 27 543 1,356 8,533 12,759 1,642 4,409 344 REM. LIFE (6 ) 21.73 21. 74 21.74 53.61 53.86 53.97 54.09 54.97 55.22 55.30 31.34 31. 42 31.58 31.66 31.74 32.09 32.39 32.83 32.88 32.92 32.96 33.00 33.03 ANAL ACCRUAL (7) 70,757 4,012 1,880 127,643 155,358 1,226 648 47 184 211 466 158,140 3,053 56 250 841 2,057 1 17 41 260 388 50 134 10 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 329 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) OXBOW HATCHERY INTERIM SURVIVOR CURVE.. IOWA 105 -R2. 5 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. -25 1991 1992 1993 1994 1995 1996 1998 1999 2001 2002 2005 2006 2010 2011 149,302.53 66,598.35 55,284.47 222,716.75 2,173.34 12,086.16 34,848.12 14,791.20 281,638.51 19,099.83 17,355.48 11,277.00 15,355.68 50,495.22 1,537,630.78 68,890 29,754 23,837 92,480 866 4,606 11,992 4,805 79,647 4,974 3,242 1,799 544 466 745,275 83,173 35,923 28,779 111,654 1,046 5,561 14,478 5,801 96,160 6,005 3,914 2,172 657 563 899,794 OXBOW INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 2 5 1938 1959 1960 1961 1962 1965 1966 1967 1968 1970 1971 1972 1974 1975 1976 1978 1980 1981 1,789.80 13,512.03 10,358.06 6,065,532.06 8,105.12 17,054.48 134.68 6,423.71 9,125.52 2,698.72 17,477.19 129,436.03 4,705.42 165,154.27 11,155.71 817.50 7,187.98 31,582.93 1,547 10,242 7,789 4,522,991 5,994 12,273 96 4,533 6,374 1,844 11,806 86,408 3,063 106,077 7,066 503 4,277 18,469 1,464 9,690 7,369 4,279,041 5,671 11,611 91 4,289 6,030 1,745 11,169 81,748 2,898 100,356 6,685 476 4,046 17,473 ~i-288 FUTURE BOOK ACCRUALS (5) 103,455 47,325 40,326 166,742 1,671 9,547 29,082 12,688 255,888 17,870 17,780 11,924 18,538 62,556 1,022,244 774 7,200 5,579 3,302,874 4,461 9,707 78 3,741 5,377 1,629 10,677 80,048 2,984 106,087 7,260 546 4,939 22,006 REM. LIFE (6) 33.07 33.10 33.14 33.17 33.20 33.24 33.30 33.32 33.38 33.40 33.47 33.50 33.58 33.59 28.51 31.16 31.25 31.34 31. 42 31.66 31.74 31.81 31.88 32.02 32.09 32.15 32.27 32.33 32.39 32.50 32.60 32.65 ANAL ACCRUAL (7 ) 3,128 1,430 1,217 5,027 50 287 873 381 7,666 535 531 356 552 1,862 31,053 27 231 179 105,388 142 307 2 118 169 51 333 2/490 92 3,281 224 17 152 674 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 330 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTUES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) OXBOW INTERIM SURVIVOR CURVE.. IOWA 10S-R2.5 PROBABLE RETIREMENT YEAR.. 7 - 2 045 NET SALVAGE PERCENT.. -25 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 2002 2003 2004 2005 2006 2007 2010 2011 76,209.63 90,619.20 349,583.99 4,027.95 39,206.28 14,017.49 1,819,116.35 345,444.36 141,437.85 23,097.53 20,750.61 110,790.01 8,136.86 31,094.50 22,934.53 186,194.65 29,089.34 16,888.94 125,892.70 2,573.77 148.89 9,959,506.64 42,932 50,021 188,906 2,128 20,219 7,048 890,435 164,367 65,261 10,319 8,947 46,004 3,243 8,098 5,435 39,562 5,434 2,694 16,476 91 1 6,388,973 OXBOW COMMON INTERIM SURVIVOR CURVE.. IOWA 105 -R2. 5 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. -25 1961 1965 1978 88,348.23 8,043.31 15,560.73 111,952.27 65,880 5,788 9,566 81,234 ALLOC. BOOK RESERVE (4) 40,616 47,323 178,717 2,013 19,128 6,668 842,409 155,502 61,741 9,762 8,464 43,523 3,068 7,661 5,142 37,428 5,141 2,549 15,587 86 1 6,044,380 90,792 7,977 13,183 111,952 ~i-289 FUTUE BOOK ACCRUALS (5) 54,646 65,951 258,263 3,022 29,879 10,854 1,431,487 276,304 115,056 19,109 17,474 94,965 7,103 31,207 23,526 195,315 31,221 18,562 141,779 3,131 185 6,405,003 19,643 2,077 6,268 27,988 REM. LIFE (6) 32.74 32.79 32.83 32.88 32.92 32.96 33.00 33.03 33.07 33.10 33.14 33.17 33.20 33.40 33.43 33.45 33.47 33.50 33.52 33.58 33.59 31.34 31.66 32.50 ANAL ACCRUAL (7) 1,669 2,011 7,867 92 908 329 43,378 8,365 3,479 577 527 2,863 214 934 704 5,839 933 554 4,230 93 6 199,449 627 66 193 886 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 331 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) PARS IMEROI ACCUULATING PONDS INTERIM SURVIVOR CURVE.. IOWA 10S-R2.S PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. - 2 5 19B1 1995 1999 2000 2002 2003 2005 2006 2007 2008 2010 2011 60,819.27 182,904.28 123,294.00 65,594.65 15,558.79 15,824.67 132,205.22 3,405,708.62 9,557,899.17 27,588.17 65,367.28 44,715.37 13,697,479.49 35,605 72,999 40,124 19,995 4,063 3,757 24,703 544,360 1,253,638 2,785 2,322 414 2,004,765 34,670 71,083 39,071 19,470 3,956 3,658 24,055 530,071 1,220,732 2,712 2,261 403 1,952,143 PARSIMEROI TRAPPING INTERIM SURVIVOR CURVE.. IOWA ios -R2 .5 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. - 2 5 1969 1970 1971 1975 1976 1977 1979 19B1 1982 1984 1985 1987 1989 1991 1992 1993 1994 1995 213,066.61 1,484.61 27,554.39 7,758.36 467.81 3,704.91 251.45 51,593.48 18,860.22 2,796.95 62,023.23 807.08 2,255.24 10,345.35 34,560.79 51,787.58 241,389.37 20,194.15 147,384 1,016 18,631 4,988 297 2,315 152 30,204 10,845 1,546 33,557 417 1,106 4,781 15,456 22,364 100,397 8,060 222,440 1,533 28,119 7,528 448 3,494 229 45,586 16,368 2,333 50,646 629 1,669 7,216 23,327 33,753 151, 525 12,165 111-290 FUTE BOOK ACCRUALS (5) 41,354 157,547 115,047 62,523 15,492 16,122 141,202 3,727,064 10,726,642 31,773 79,448 55,491 15,169,706 43,893 322 6,324 2,170 137 1,137 85 18,906 7,207 1,163 26,883 379 1,150 5,716 19,874 30,981 150,212 13,078 REM. LIFE (6) 32.58 33.13 33.24 33.27 33.32 33.35 33.40 33.42 33.44 33.46 33.50 33.51 31.88 31.95 32.02 32.26 32.32 32.37 32.48 32.58 32.62 32.71 32.76 32.84 32.92 32.99 33.03 33.06 33.09 33.13 ANAL ACCRUAL (7) 1,269 4,755 3,461 1,879 465 483 4,228 111,522 320,773 950 2,372 1,656 453,813 1,377 10 198 67 4 35 3 580 221 36 B21 12 35 173 602 937 4,539 395 Exhibit No. 1 Case No.IPC-E-12-08 J. Spanos. IPC Page 332 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) PAHSIMEROI TRAPPING INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 04 5 NET SALVAGE PERCENT.. -25 1996 1997 2009 12,849.36 38,129.33 98,647.92 900,528.19 4,905 13,868 6,819 429,108 SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA ios -R2. 5 PROBABLE RETIREMENT YEAR.. 5 - 2 031 NET SALVAGE PERCENT.. -25 1921 1922 1924 1925 1926 1927 1928 1929 1937 1940 1941 1942 1945 1953 1954 1956 1957 1958 1960 1961 1964 1965 1966 1967 1971 1972 1973 1974 1980 210,920.90 30.73 52.72 23.05 235.23 4,283.13 5,229.70 48.72 265.82 66.91 1,279.29 7.79 420.92 670.48 10,260.25 2,331.00 7,540.11 415.97 4,082.82 100.45 160.16 2,620.35 5,686.78 93.49 1,179.47 75.91 9,477.19 8,344.29 49,172.69 215,885 31 54 23 238 4,321 5,262 49 261 65 1,240 8 403 621 9,464 2,130 6,855 376 3,654 89 140 2,276 4,907 80 980 63 7,741 6,753 37,269 ALLOC. BOOK RESERVE (4) 7,403 20,930 10,292 647,634 204,821 29 51 22 226 4,100 4,992 46 248 62 1,176 8 382 589 8,979 2,021 6,504 357 3,467 84 133 2,159 4,656 76 930 60 7,344 6,407 35,359 ~i-291 FUTURE BOOK ACCRUALS (5) 8,659 26,731 113,018 478,026 58,830 9 15 7 68 1,254 1,545 14 85 22 423 2 144 249 3,846 893 2,921 163 1,637 41 67 1,116 2,453 41 545 35 4,502 4,023 26,107 REM. LIFE (6) 33.16 33.19 33.48 17.01 17.10 17.27 17.35 17.43 17.51 17.59 17.66 is .17 18.33 18.38 18.43 18.57 18.87 18.90 18.97 19.00 19.03 19.08 19.11 19.18 19.21 19.23 19.25 19.34 19.36 19.37 19.39 19.49 ANAL ACCRUAL (7) 261 805 3,376 14,487 3,459 1 1 4 72 88 1 5 1 23 8 13 203 47 154 9 86 2 3 58 128 2 28 2 232 207 1,340 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 333 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331.00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 105 -R2 .5 PROBABLE RETIREMENT YEAR.. 5-2031 NET SALVAGE PERCENT.. - 2 5 1981 1983 1986 1987 1988 1990 1991 1993 1995 1997 1999 2000 2006 2007 2008 2010 1,459.68 2,919.37 570,974.23 291.01 247.09 16,537.99 56,438.76 1,601.35 30,332.35 79,109.12 19,782.55 20,477.06 1,923.50 59,305.91 12,771.96 8,308.63 1,207,556.88 1,092 2,124 395,699 198 165 10,568 35,211 947 16,824 40,660 9,263 9,077 481 12,350 2,079 495 848,471 1,036 2,015 375,420 188 157 10,026 33,407 898 15,962 38,576 8,788 8,612 456 11,717 1,972 470 804,989 STRIKE INTERIM SURVIVOR CURVE.. IOWA 105 - R2 . 5 PROBABLE RETIREMENT YEAR.. 3-2032 NET SALVAGE PERCENT.. -25 1950 1952 1954 1956 1957 1958 1964 1967 1969 1971 1973 1980 1982 1983 1985 1988 31. 23 1,836,365.39 1,030.58 3,174.70 1,519.42 818.25 3,616.60 0.20 206.21 6,295.32 8,091.07 8,418.30 43,719.70 2,207.01 719.60 43,169.94 29 1,691,338 941 2,870 1,366 732 3,123 172 5,160 6,514 6,279 31,736 1,578 498 28,254 22 1,294,618 720 2,197 1,046 560 2,390 o 132 3,950 4,986 4,806 24,292 1,208 381 21,627 ~i-292 FUTURE BOOK ACCRUALS (5) 789 1,634 338,297 176 152 10,646 37,142 1,103 21,954 60,310 15,940 16,984 1,948 62,415 13,992 9,916 704,457 17 1,000,838 568 1,772 854 463 2,130 126 3,919 5,128 5,717 30,358 1,551 518 32,336 REM. LIFE (6 ) 19.51 19.53 19.57 19.58 19.60 19.62 19.63 19.65 19.67 19.69 19.70 19.71 19.75 19.76 19.77 19.78 19.49 19.57 19.64 19.71 19.74 19.78 19.95 20.07 20.11 20.16 20.28 20.31 20.33 20.36 20.40 ANAL ACCRUAL (7) 40 84 17,287 9 8 543 1,892 56 1,116 3,063 809 862 99 3,159 708 501 36,413 1 51,141 29 90 43 23 107 6 195 254 282 1,495 76 25 1,585 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 334 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) STRIKE INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 3 - 2032 NET SALVAGE PERCENT.. -25 1989 1991 1992 1993 1994 1995 1996 1997 1998 1999 2003 2004 2005 2006 2007 2008 2009 2010 2011 1,037.34 60,401. 44 4,328.83 22,105.63 18,568.38 252,504.05 258,322.72 27,856.31 48,178.69 6,587.66 20,823.10 13,087.52 22,282.60 67,253.78 102,928.38 3,156,286.95 1,867,490.84 1,233,771.36 49,329.71 9,192,528.81 665 36,901 2,576 12,786 10,411 136,867 134,941 13,973 23,108 3,005 7,214 4,111 6,227 16,280 20,718 497,549 204,794 70,711 739 2,984,166 SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 6-2042 NET SALVAGE PERCENT.. -25 1928 1929 1931 1936 1937 1938 1939 1941 1946 1947 1953 1964 1965 92,575.51 159.78 303.31 1,879.59 69.74 1,054.16 97.11 244.90 98.72 104.16 891.00 92.25 2,259.79 85,606 147 277 1,679 62 933 86 214 84 88 728 69 1,688 ALLOC. BOOK RESERVE (4) 509 28,246 1,972 9,787 7,969 104,763 103,289 10,695 17,688 2,300 5,522 3,147 4,766 12,461 15,858 380,844 156,758 54,125 566 2,284,201 78,172 134 253 1,533 57 852 79 195 77 80 665 63 1,541 ~i-293 FUTURE BOOK ACCRUALS (5) 788 47,256 3,439 17,845 15,241 210,867 219,614 24,125 42,536 5,934 20,507 13,213 23,087 71,606 112,802 3,564,515 2,177,606 1,488,089 61,096 9,206,460 37,547 65 126 816 31 466 43 111 47 50 449 52 1,283 REM. LIFE (6 ) 20.41 20.44 20.45 20.46 20.47 20.48 20.49 20.50 20.51 20.52 20.55 20.56 20.56 20.57 20.58 20.58 20.59 20.60 20.60 24.92 25.10 25.44 26.22 26.36 26.50 26.63 26.89 27.48 27.59 28.17 29.00 29.06 ANAL ACCRUAL (7) 39 2,312 168 872 745 10,296 10,718 1,177 2,074 289 998 643 1,123 3,481 5,481 173,203 105,760 72,237 2,966 449,934 1,507 3 5 31 1 18 2 4 2 2 16 2 44 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 335 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 6-2042 NET SALVAGE PERCENT.. -25 1986 1990 1991 1992 1993 1994 1995 1996 1997 2003 2004 2005 2007 2008 2010 26,790.96 14,050.25 71,763.89 517,396.80 11,929.34 23,175,B49.95 16,680.12 8,626.20 1,098,717.95 18,473.90 13,990.26 72,581. 94 9,033.22 124,283.16 173,940.37 25,453,938.33 14 ,914 7,072 35,075 245,168 5,463 10,230,110 7,080 3,505 426,069 4,724 3,211 14,656 1,287 13,673 6,814 11,110,482 13,619 6,458 32,029 223,878 4,989 9,341,745 6,465 3,201 389,070 4,314 2,932 13,383 1,175 12,486 6,222 10,145,667 TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 105 - R2 . 5 PROBABLE RETIREMENT YEAR.. 12-2040 NET SALVAGE PERCENT.. -25 1938 1940 1941 1942 1944 1945 1946 1950 1953 1954 1957 1960 1962 1963 1965 1966 1968 149,682.54 1,348.22 447.82 4,310.11 20.08 275.67 584.39 837.27 5,799.56 1,804.65 65.15 3,529.53 91.80 195.85 2,364.907,355.41 7B.73 134,129 1,197 396 3,792 17 239 504 707 4,811 1,488 53 2,794 72 152 1,800 5,547 58 125,971 1,124 372 3,561 16 224 473 664 4,518 1,398 50 2,624 68 143 Ii 691 5,210 54 ~i-294 FUE BOOK ACCRUALS (5) 19,870 11,105 57,676 422,868 9,923 19,628,067 14,385 7,582 984,328 18,779 14,556 77,344 10,116 142,868 211,203 21,671,756 61,132 561 188 1 ,826 9 120 257 383 2,731 858 32 1,788 47 102 1 i 266 3,985 44 REM. LIFE (6) 30.04 30.17 30.20 30.22 30.25 30.28 30.30 30.33 30.35 30.48 30.50 30.52 30.55 30.57 30.60 25.47 25.71 25.83 25.94 26.16 26.26 26.36 26.73 26.98 27.05 27.27 27.48 27.60 27.66 27.77 27.83 27.93 ANAL ACCRUAL (7) 661 368 1,910 13,993 328 648,219 475 250 32,433 616 477 2,534 331 4,673 6,902 715,807 2,400 22 7 70 5 10 14 101 32 1 65 2 4 46 143 2 Exhibit No. 1 Case No. IPG-E-12-08 J. Spanos, IPC Page 336 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA ios -R2. 5 PROBABLE RETIREMENT YEAR.. 12-2040 NET SALVAGE PERCENT.. -25 1969 1970 1971 1977 1981 1982 1983 1984 1985 1987 1990 1991 1993 1996 1997 2002 1,452.40 3,343.75 3,481.52 2,300.42 15,100.72 32,104.17 34,075.28 46,415.16 18,097.33 27,573.89 1,868.83 197,908.82 4,778.10 9,549.81 77,837.99 6,605.42 661,285.29 1,065 2,427 2,501 1,536 9,492 19,845 20,691 27,650 10,567 15,417 969 99,622 2,256 4,012 31,206 1,925 408,937 TWIN FALLS (NEW) INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 12-2040 NET SALVAGE PERCENT.. -25 1995 10,146,761.46 10,146,761.46 4,446,438 4,446,438 THOUSAND SPRINGS INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 6-2019 NET SALVAGE PERCENT.. -25 1919 1921 1922 1926 1928 1930 14,186.88 90,051.98 1,368.56 1,829.53 411.52 136.31 16,223 102,801 1,561 2,079 467 154 ALLOC. BOOK RESERVE (4) 1, 000 2,279 2,349 1,443 8,915 18,638 19,433 25,968 9,924 14,479 910 93,563 2,119 3,768 29,308 1,808 384,066 4,011,687 4,011,687 15,614 98,945 1,502 2,001 449 148 111-295 FUTUE BOOK ACCRUALS (5) 815 1,900 2,003 1,433 9,961 21,492 23,161 32,051 12,697 19,988 1,426 153,823 3,854 8,169 67,989 6,449 442,541 REM. LIFE (6) 27.98 28.03 28.08 28.34 28.49 28.52 28.55 28.59 28.62 28.68 28.76 28.79 28.84 28.90 28.93 29.02 8,671,765 8,671,765 28.88 2,119 13,620 208 286 65 22 7.54 7.57 7.58 7.63 7.66 7.68 ANAL ACCRUAL (7) 29 68 71 51 350 754 811 1,121 444 697 50 5,343 134 283 2,350 222 15,702 300,269 300,269 281 1,799 27 37 8 3 Exhibit No. 1 Case No. IPC-E-12-QS J. Spanos, IPC Page 337 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTUES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) THOUSAND SPRINGS INTERIM SURVIVOR CURVE.. IOWA 105 - R2 . 5 PROBABLE RETIREMENT YEAR.. 6 - 2 019 NET SALVAGE PERCENT.. -25 1936 1938 1939 1940 1941 1947 1952 1954 1955 1958 1960 1966 1967 1968 1970 1971 1982 1984 1985 1989 1990 1991 1992 1993 1994 1995 1996 1997 2010 13.15 417.59 492.40 32.20 1,613.92 236.33 3,887.39 375.59 5,319.l9 84.80 8,217.43 75.82 24,095.35 92.24 3,382.06 i,413.30 5,544.77 22,715.83 2,781.19 31,329.09 9,167.13 13,183.42 7,289.23 29,116.38 6,387.53 18,107.50 8,831.40 15,437.50 32,863.37 360,487.88 15 468 551 36 1,802 26l 4,263 410 5,796 92 8,848 80 25,403 97 3,526 1,468 5,419 21,848 2,652 28,648 8,277 11,744 6,398 25,145 5,419 15,052 7,182 12,252 4,575 331,012 UPPER MALAD INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 5-2033' NET SALVAGE PERCENT.. -25 1948 1954 1956 308,348.77 100.49 168.15 285,014 90 150 ALLOC. BOOK RESERVE (4) 14 450 530 35 1,734 251 4,103 395 5,579 89 8,516 77 24,450 93 3,394 1,413 5,216 21,028 2,553 27,573 7,967 11,303 6,158 24,202 5,216 14,487 6,913 11,792 4,403 318,596 276,204 87 145 111-296 FUE BOOK ACCRUALS (5 ) 2 72 85 6 283 44 756 75 1,070 17i,756 18 5,669 22 834 354 1,715 7,366 924 11,588 3,492 5,176 2,954 12,194 2,769 8,147 4,127 7,504 36,676 132,014 109,232 38 65 REM. LIFE (6) 7.74 7.75 7.76 7.77 7.78 7. B2 7.84 7.85 7.86 7.87 7.88 7.90 7.91 7.91 7.92 7.92 7.94 7.95 7.95 7.96 7.96 7.96 7.96 7.96 7.96 7.97 7.97 7.97 7.98 20.40 20.67 20.74 ANAL ACCRUAL (7) 9 11 1 36 6 96 10 136 2 223 2 717 3 105 45 216 927 116 1,456 439 650 371 1,532 348 1,022 518 942 4,596 16,690 5,355 2 3 Exhibit No. '1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 338 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) UPPER MAAD INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -25 1965 1971 1974 1981 1986 1988 1989 1990 1991 1993 2006 2008 2009 191.01 4,420.21 2,824.33 1,386.08 11,834.82 260.33 245.12 8,792.21 5,046.05 8,950.34 5,251.95 4,296.47 1,530.75 363,647.08 161 3,555 2,208 997 7, B52 166 153 5,357 2,998 5,024 1,215 644 159 315,743 UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 105-R2.5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -25 1937 1938 1939 1940 1941 1945 1946 1948 1949 1951 1952 1954 1955 1957 1958 1961 1964 1965 1971 416,726.69 1,478.61 276.82 4,564.54 105.61 3,063.55 1,267.06 24,767.33 180.66 2,560.26 13,004.99 2,574.53 245.61 1,812.60 473 .14 198.46 418.90 228.21 340.02 401,089 1,419 265 4,350 100 2,866 1,181 22,893 166 2,336 11,811 2,316 220 1,606 417 172 356 192 273 ALLOC. BOOK RESERVE (4) 156 3,445 2,140 966 7,609 161 148 5,191 2,905 4,869 1,177 624 154 305,983 377,600 1,336 249 4,095 94 2,698 1,112 21,552 156 2,199 11,119 2,180 207 1,512 393 162 335 181 257 ~i-297 FUTURE BOOK ACCRUALS (5 ) 83 2,080 1,391 766 7,184 165 158 5,799 3,402 6,319 5,387 4,746 1,759 148,576 143,308 512 97 1,610 38 1,131 472 9,407 70 1,001 5,137 1,038 100 754 199 86 188 105 168 REM. LIFE (6 ) 21.04 21.20 21. 27 21.41 21. 49 21. 52 21. 53 21. 55 21. 56 21.59 21.71 21.73 21. 74 19.77 19.83 19.90 19.96 20.02 20.25 20.30 20.40 20.45 20.54 20.58 20.67 20.70 20.78 20.82 20.92 21.01 21.04 21. 20 ANNUAL ACCRUAL (7) 4 98 65 36 334 8 7 269 158 293 248 218 81 7,179 7,249 26 5 81 2 56 23 461 3 49 250 50 5 36 10 4 9 5 8 Exhibit NO.1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 339 of 491 IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) ALLOC. BOOK RESERVE (4) CALCULATED ACCRUED (3) UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA ios -R2 .5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -25 1972 6,486.17 5,170 4,867 1973 958.83 757 713 1978 13,712.35 10,259 9,658 1981 8,417.21 6,056 5,701 1982 9,617.22 6,821 6,422 1983 62,246.29 43,476 40,930 1984 49,087.52 33,731 31,756 1985 34,226.84 23,127 21,77319864,505.76 2,990 2,81519873,166.58 2,061 1,940 1988 585.88 374 352198928,908.36 18,034 16,978 1990 20,877.88 12,720 11,975 1991 51,605.14 30,660 28,864 1993 57,841.23 32,470 30,568 1994 29,549.67 16,073 15,132 1996 3,229.87 1,634 1,538201011,007.62 599 564 870,318.01 701,040 659,985 UPPER SALMON B INTERIM SURVIVOR CURVE..IOWA 105-R2.5 PROBABLE RETIREMENT YEAR. .5-2033 NET SALVAGE PERCENT. .-25 1947 59,963.07 55,656 35,363194920,783.91 19,130 12,155 1950 23.90 22 14 1956 3,541.99 3,154 2,004 1959 19,537.56 17,115 10,875 1967 1,157.65 962 611 1972 6,691.28 5,334 3,389 1982 22,264.55 15,790 10,033 1984 7,600.61 5,223 3,31919874,220.24 2,747 1,745 1990 44,850.02 27,324 17,36119937,629.68 4,283 2,721 1994 6,476.70 3,523 2,238 1995 13,215.88 6,944 4,412 ~i-298 FUTE BOOK ACCRUALS (5 ) REM. LIFE (6) ANAL ACCRUAL (7) 3,240 21. 22 153 486 21. 24 23 7,482 21.35 350 4,820 21. 41 225 5,600 21. 42 261 36,878 21.44 1,720 29,604 21. 46 1,379 21,011 21. 47 9792,817 21.49 131 2,018 21.50 94 380 21.52 18 19,158 21.53 890 14,122 21. 55 655 35,642 21.56 1,653 41,733 21. 59 1,933 21,805 21.60 1,0092,499 21.62 116 13,196 21.74 607 427,913 20,528 39,591 13,825 16 2,423 13,547 836 4,975 17,798 6,182 3,530 38,701 6,816 5,857 12,108 20.35 20.45 20.49 20.74 20.85 21.10 21. 22 21.42 21.46 21.50 21.55 21.59 21. 60 21.61 1,946 676 1 117 650 40 234 831 288 164 1,796 316 271 560 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 34 of 491 IDAHO POWER COMPANY ACCOUNT 331. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) ALLOC. BOOK RESERVE (4) CALCULATED ACCRUED (3 ) UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 105-R2. 5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -25 FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6 ) ANAL ACCRUAL (7) 1996 7,497.16 3,793 2,410 6,961 21.62 322200444,194.38 13,313 8,459 46,784 21.70 2,156200557,287.00 15,323 9,736 61,873 21. 71 2,8502008295,812.64 44,331 28,167 341,599 21.73 15,7202009128,014.88 13,296 8,448 151,571 21.74 6,97220102,685.09 146 93 3,264 21.74 150 753,448.19 257,409 163,553 778,257 36,060 UPPER SALMON COMMON INTER I M SURVIVOR CURVE.. IOWA 105 - R2 . 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -25 1984 166,721.15 114,565 104,180 1985 143,430.51 96,914 88,129 1994 3,266.50 1,777 1,616 2006 27,991.43 6,475 5,88820078,060.76 1,550 1,410200921,085.80 2,190 1,991201119,107.86 261 237 389,664.01 223,732 203,452 156,068,973.02 69,850,772 72,020,625 104,221 91,159 2,467 29,101 8,666 24,366 23,647 21.46 21. 47 21. 60 21.71 21.72 21.74 21.75 4,857 4,246 114 1,340 399 1,121 1,087 283,628 13,164 123,065,590 3,962,960 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 31.1 2.54 Exhibit No. 1 Case No. IPC-E-12-08111-299 J. Spanos, IPC Page 341 of 491 IDAHO POWER COMPANY ACCOUNT 332.10 RESERVOIRS, DAMS AN WATERWAYS - RELOCATION CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 10 1960 8,639,663.66 5,879,801 8,639,663.66 5,879,801 HELLS CANYON INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 10 1960 940,788.93 640,262 940,788.93 640,262 OXBOW INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. -10 1960 56,309.00 38,322 56,309.00 38,322 OXBOW COMMON INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 10 1961 1964 1965 1979 1,520,822.45 373,757.59 3,257.74 30,082.05 1,024,169 243,703 2,100 16,080 1,927,919.83 1,286,052 ALLOC. BOOK RESERVE (4) 5,496,028 5,496,028 567,814 567,814 35,102 35,102 1,109,088 263,910 2,274 17,413 1,392,685 ~i-300 FUTE BOOK ACCRUALS (5) REM. LIFE (6) 4,007,602 4,007,602 31.37 467,054 467,054 31.37 26,838 26,83831.37 563,817 147,224 1,309 15,677 728,027 31.62 32.27 32.46 33.85 ANAL ACCRUAL (7) 127,753 127,753 14,889 14,889 856 856 17,831 4,562 40 463 22,896 Exhibit No.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 342 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 332.10 RESERVOIRS, DAMS AND WATERWAYS - RELOCATION CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) BROWNLEE COMMON INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR. . 7-2045 NET SALVAGE PERCENT.. -10 1960 7,895,824.78 5,373,575 7,895,824.78 5,373,575 19,460,506.20 13,218,012 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT " 31.4 8,200,867 ALLOC. BOOK RESERVE (4) 5,714/061 5,7141061 13,205,690 ~i-301 FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6) 2/971,346 31.37 2,971,346 ANAL ACCRUAL (7 ) 94/719 94,719 261,113 1.34 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 343 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUN 332.20 RESERVOIRS, DAMS AN WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) MILNER DAM INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 6-2067 NET SALVAGE PERCENT.. - 1 0 1992 614,874.97 614,874.97 173,406 173,406 214,720 214,720 AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-84 PROBABLE RET I REMENT YEAR.. 2 - 2 055 NET SALVAGE PERCENT.. - 10 1978 2007 4,217,904.39 75,170.71 4,293,075.10 2,026,062 6,940 2,033,002 2,653,886 9,091 2,662,977 BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEA.. 7 -2045 NET SALVAGE PERCENT.. -10 1959 1960 1961 1962 1963 1966 1980 1983 1984 1992 2002 2003 2004 2006 2007 2009 655.47 39,060,442.63 19,112.43 649.10 41,189.39 1,882.50 13,170,481.89 119,689.40 2,363.18 6,655.39 12,011.84 124,330.51 5,202.98 42,336.15 43,831. 53 310,388.56 52,961,222.95 451 26,582,936 12,871 433 27,150 1,200 6,922,287 59,487 1,151 2,621 2,760 26,000 975 5,958 5,064 18,925 33,670,269 488 28,792,341 13,941 469 29,407 1,300 7,497,624 64,431 1,247 2,839 2,989 28,161 1,056 6,453 5,485 20,498 36,468,728 111-302 FUTRE BOOK ACCRUALS (5 ) REM. LIFE (6) 461,642 461,642 55.11 1,985,808 42.57 73,597 43.66 2,059,406 233 14,174,146 7, 083 245 15,902 771 6,9B9,907 67,227 1,353 4,482 10,224 108,603 4,667 40,117 42,730 320,929 21,788,617 31. 10 31. 37 31.62 31.85 32.07 32.63 33.88 33.97 33.99 34. 07 34.08 34.08 34.08 34.08 34.08 34.08 ANNUAL ACCRUAL (7) 8,377 8,377 46,648 1,686 48,334 7 451,838 224 8 496 24 206,314 1,979 40 132 300 3,187 137 1,177 1,254 9,417 676,534 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 34 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AN WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) BLISS INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -10 1950 1952 1961 1964 1967 1972 1991 1995 1997 2005 2006 2007 2008 2010 2011 7,130,944.04 244.19 987.47 6,944.86 1,189.00 3,579.78 238,329.85 6,077.96 2,278.82 22,685.97 29,929.77 705,908.41 16,151. 92 223,175.50 23,576.17 8,412,003.71 5,886,637 199 760 5,235 876 2,524 125,078 2,821 977 5,363 6,115 119,829 2,139 10,711 293 6,169,557 CASCADE INTERIM SURVIVOR CURVE.. IOWA 95 -S4 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. - 1 0 1983 1985 3,143,493.19 2,137.27 3,145,630.46 1,268,095 819 1,268,914 CLEA LAKE INTERIM SURVIVOR CURVE.. IOWA 95 - S4 PROBABLE RETIREMENT YEAR.. 6 - 2 0 17 NET SALVAGE PERCENT.. - 10 1917 1937 1940 1985 60,439.46 26,614.53 165.09 20,972.93 62,667 27,132 168 18,745 ALLOC. BOOK RESERVE (4 ) 6,151,331 20B 794 5,470 915 2,637 130,702 2,948 1,021 5,604 6,390 125,217 2,235 11,193 306 6,446,973 1,538,000 993 1,53B,993 65,491 28,355 176 19,590 ~i-303 FUTURE BOOK ACCRUALS (5) 1,692,707 61 292 2,169 393 1,300 131,461 3,738 1,486 19,350 26,533 651,282 15,532 234,300 25,628 2,806,231 1,919,843 1,358 1,921,201 992 921 6 3,480 REM. LIFE (6) 20.13 20.43 21.39 21.57 21. 70 21. 83 21. 92 21.92 21.92 21.92 21. 92 21.92 21.92 21.92 21.92 48.35 48.63 5.20 5.74 5.80 6.00 ANAL ACCRUAL (7) 84,089 3 14 101 18 60 5,997 171 68 883 1,210 29,712 709 10,689 1,169 134,893 39,707 28 39,735 191 160 1 580 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 345 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 332. 20 RESERVO IRS, DAMS AN WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 6 - 2 017 NET SALVAGE PERCENT.. - 10 1990 1991 2000 433,043.23 10,137.97 33,611.52 584,984.73 370,494 8,578 23,924 511,708 HELLS CANYON INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. -10 1967 1969 1971 1989 2008 2010 51,505,539.71 4,197.95 610.13 60,816.20 188,429.53 16,151. 92 51,775,745.44 32,460,542 2,583 366 26,258 16,770 507 32,507,026 LOWER MALAD INTERIM SURVIVOR CURVE.. IOWA 95 - S4 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -10 1948 1952 1954 1957 1958 1959 1963 1965 1980 1982 1985 1987 1991 1997 1,327,140.75 16,690.13 11,744.13 488.94 285.48 27,674.89 646.77 42,271.34 574,026.92 10,714.59 6,014.04 5,738.98 4,219.06 38,665.25 1,108,176 13,617 9,467 387 224 21,607 491 31,627 370,024 6,714 3,590 3,300 2,214 16,577 ALLOC. BOOK RESERVE (4) 387,192 8,965 25,002 534,771 30,796,136 2,451 347 24,912 15,910 481 30,840,237 1,039,339 12,771 8,879 363 210 20,265 461 29,662 347,039 6,297 3,367 3,095 2,076 15,547 ~i-304 FUTRE BOOK ACCRUALS (5 ) 89,155 2,187 11,970 108,712 25,859,957 2,167 324 41,986 191,362 17,286 26,113,083 420,516 5,588 4,040 175 104 10,178 251 16,836 284,391 5,489 3,248 3,218 2,564 26,984 REM. LIFE (6) 6.00 6.00 6.00 32.79 33.07 33.30 34.05 34.08 34.08 19.79 20.43 20.70 21. 04 21.14 21. 23 21. 51 21. 62 21.90 21. 91 21.91 21. 91 21.92 21. 92 ANAL ACCRUAL (7) 14,859 364 1,995 18,150 788,654 66 10 1,233 5,615 507 796,085 21,249 274 195 8 5 479 12 779 12,986 251 148 147 117 1,231 Exhibit NO.1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 346 of 491 YEAR (i) IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AN WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) LOWER MAAD INTERIM SURVIVOR CUVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT., - 1 0 2000 2007 2008 12,216.05 160,356.21 2,618,397.61 4,857,291.14 4,490 27,221 346,752 1,966,478 LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 95 - S4 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 10 1919 1935 1942 1944 1949 1951 1954 1961 1972 1984 1985 1989 1992 1995 2004 2006 2007 2008 2010 2011 90,169.18 5,149.42 3,481.53 11,749.20 5,284,539.03 592.95 716.91 836.19 3,896.92 5,236.96 33,752.13 19,438.80 752,157.28 227,782.42 14,004.77 130,243.18 637.98 175,440.03 71,379.39 792.88 6,831,997.15 85,804 4,597 3,003 10,030 4,387,938 487 578 644 2,748 3,180 20,148 10,711 384,166 105,722 3,729 26,611 108 23,233 3,426 10 5,076,873 ALLOC. BOOK RESERVE (4) 4,211 25,530 325,213 1,844,325 89,048 4,771 3,117 10,409 4,553,849 505 600 668 2,852 3,300 20,910 11,116 398,692 109,719 3,870 27,617 112 24,111 3,556 10 5,268,833 ~i-305 FUTUE BOOK ACCRUALS (5) 9,227 150,862 2,555,025 3,498,695 10,138 894 713 2,515 1,259,144 147 189 251 1,435 2,460 16,218 10,267 428,681 140,841 11,535 115,650 590 168,873 74,962 862 2,246,364 REM. LIFE (6) 21.92 21. 92 21.92 12.68 16.90 18.58 19.01 19.96 20.29 20.70 21.39 21. 83 21. 91 21.91 21. 92 21. 92 21. 92 21. 92 21.92 21. 92 21.92 21. 92 21.92 ANAL ACCRUAL (7) 421 6,882 116,561 161,745 800 53 38 132 63,083 7 9 12 66 112 740 468 19,557 6,425 526 5,276 27 7,704 3,420 39 108,494 Exhibît NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 347 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) MILNER INTERIM SURVIVOR CURVE.. IOWA 95 -S4 PROBABLE RETIREMENT YEAR.. 11-2068 NET SALVAGE PERCENT.. - 1 0 1992 1996 2004 2010 16,435,809.66 26,579.77 5,240.49 32,428.83 16,500,058.75 4,558,899 6,109 628 611 4,566,247 OXBOW INTERIM SURVIVOR CURVE.. IOWA 95 -84 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. -10 1961 1962 1966 1967 1979 1981 1990 1991 1994 1997 2000 2001 2002 2003 2004 28,258,094.98 1,880.66 7,218.22 1,479.00 1,470,840.06 88,610.09 879.09 11,496.62 5,815.35 112,688.51 110,217.88 8,115.00 66,567.38 34,371.21 141,130.82 30 , 3 19 , 404 . 87 19,029,877 1,253 4,602 932 786,230 45,747 369 4,679 2,129 36,094 29,584 2,025 15,297 7,188 26,454 19,992,460 OXBOW COMMON INTERIM SURVIVOR CURVE.. IOWA 95-84 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. - 10 1990 9,871.65 9,871.65 4,142 4,142 5,668,380 7,596 781 760 5,677,516 18,431,117 1,214 4,457 903 761,492 44,308 357 4,532 2,062 34,958 28,653 1,961 14,816 6,962 25,622 19,363,413 5,314 5,314 ~i-306 FUTURE BOOK ACCRUALS (5) 12,411,011 21,642 4,984 34,912 12,472,549 12,652,788 855 3,483 724 856,432 53,163 610 8,115 4,335 88,999 92,587 6,965 58,408 30,846 129,622 13,987,932 REM. LIFE (6) 56.35 56.79 57.24 57.36 31.62 31.85 32.63 32.79 33.85 33.92 34.06 34.06 34.07 34.08 34.08 34.08 34.08 34.08 34.08 5,545 5,545 34.06 ANAL ACCRUAL (7) 220,249 381 87 609 221,326 400,151 27 107 22 25,301 1,567 18 238 127 2,611 2,717 204 1,714 905 3,803 439,512 163 163 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 348 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 332. 20 RESERVOIRS, DAMS AN WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEA.. 5-2031 NET SALVAGE PERCENT.. - 1 0 1919 1921 1922 1927 1930 1936 1937 1946 1955 1966 1991 1992 1998 70,847.51 346,581.41 49.44 45,765.67 137.12 155.88 5.32 79.24 393.33 492.24 8,614.18 1,985.66 37,294.48 512,401. 48 67,801 329,620 47 42,651 126 140 5 68 322 376 4,747 1,066 16,200 463,169 STRIKE INTERIM SURVIVOR CURVE.. IOWA 95 -S4 PROBABLE RETIREMENT YEAR.. 3 -2032 NET SALVAGE PERCENT.. - 10 1952 1953 1955 1956 1961 1964 1968 1980 1989 1991 1992 1994 2003 2006 2007 2008 9,678,551.39 5,288.08 497.77 3,100.75 678.10 1,329.48 738.79 7,129.30 5,395.77 7,426.17 24,728.83 4,928.45 2,762.25 22,360.45 268,493.12 167,821.68 7,993,003 4,343 404 2,502 530 1,019 549 4,699 3,054 4,009 13,002 2,441 845 4,776 47,733 23,319 ALLOC. BOOK RESERVE (4 ) 75,493 367,014 52 47,490 140 156 6 76 359 419 5,286 1,187 18,038 515,713 7,999,580 4,347 404 2,504 530 1,020 549 4,703 3,057 4,012 13,013 2,443 846 4,780 47,772 23,338 111-307 FUTURE BOOK ACCRUALS (5) 2,440 14,226 2 2,853 11 16 11 74 123 4,190 997 22,986 47,929 2,646,827 1,470 143 907 215 443 263 3,139 2,879 4,156 14,189 2,978 2,193 19,817 247,570 161,266 REM. LIFE (6) 12.18 12.64 12.87 14.04 14.73 16.07 17.96 19.09 19.74 19.92 19.92 19.92 19.48 19.60 19.82 19.92 20.31 20.46 20.60 20.74 20.75 20.75 20.75 20.75 20.75 20.75 20.75 20.75 ANAL ACCRUAL (7) 200 1,125 203 1 1 1 4 6 210 50 1,154 2,955 135,874 75 7 46 11 22 13 151 139 200 684 144 106 955 11,931 7,772 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 349 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) STRIKE INTERIM SURVIVOR CUVE.. IOWA 95 - S4 PROBABLE RETIREMENT YEAR.. 3-2032 NET SALVAGE PERCENT.. -10 2009 2010 2011 31,062.20 205,582.29 722.37 10,438,597.24 3,004 10,398 9 8,119,639 SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-84 PROBABLE RETIREMENT YEAR.. 6-2042 NET SALVAGE PERCENT.. - 10 1928 1937 1963 1972 1986 1988 1989 1990 1994 1995 1997 2003 2007 267,078.25 9,688.05 36.48 2,466.249,iil,138.39 3,592.90 429,666.46 740.33 3,758,661.78 66.79 340.60 57,982.54 215,428.06 13,856,886.87 239,336 8,206 25 1,521 4,476,639 1,684 196,261 329 1,464,326 25 117 13,083 27,083 6,428,635 TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 12 -2040 NET SALVAGE PERCENT.. - 10 1938 1939 1950 254,658.52 96.15 48.54 215,469 81 38 ALLOC. BOOK RESERVE (4) 3,006 10,407 9 8,126,320 254,402 8,723 27 1,617 4,758,442 1,790 208,616 350 1,556,505 27 124 13,907 28,788 6,833,315 237,392 89 42 ~i-308 FUTURE BOOK ACCRUALS (5) 31,162 215,734 786 3,356,137 39,384 1,934 14 1,096 5,263,811 2,162 264,018 465 2,578,023 47 250 49,874 208,183 8,409,261 42,733 17 12 REM. LIFE (6) 20.75 20.75 20.75 17.42 21.21 29.59 30.56 30.97 30.98 30.98 30.99 31.00 31.00 31.00 31.00 31.00 21.11 21.51 25.43 ANAL ACCRUAL (7 ) 1,502 10,397 38 170,067 2,261 91 36 169,965 70 8,522 15 83,162 2 8 1,609 6,716 272,457 2,024 1 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 350 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AN WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 12-2040 NET SALVAGE PERCENT.. - 10 1952 1962 1969 904.65 2,367.32 5,013.90 263,089.08 689 1,653 3,264 221,194 TWIN FALLS (NEW) INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 12 - 2040 NET SALVAGE PERCENT.. -10 1995 2006 7,625,243.00 20,537.81 7,645,780.81 2,949,558 3,274 2,952,832 THOUSAN SPRINGS INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 6 - 2 019 NET SALVAGE PERCENT.. - 10 1919 1921 1928 1929 1931 1939 1940 1944 1946 1954 1977 1987 1991 1996 2004 11 7,866.32 275,139.02 35.27 12,013.56 2,748.42 4,173.76 82.37 2,151.10 43.98 1,249.04 136,447.28 139,855.44 1,270,097.34 95,018.21 26,521.71 2,083,442.82 120,075 279,721 36 12, ios 2,762 4,146 82 2,119 43 1,206 121,502 115,381 997,940 68,165 13,615 1,738,898 ALLOC. BOOK RESERVE (4) 759 1,821 3,596 243,699 2,532,215 2,811 2,535,026 129,653 302,653 39 13,215 3,023 4,591 91 2,366 48 1,374 150,092 153,502 1, 327,650 90,686 18,113 2,197,096 ~i-309 FUTE BOOK ACCRUALS (5) 236 783 1,919 45,699 REM. LIFE (6 ) 26.02 28.18 28.96 5,855,552 29.50 19,781 29.50 '5,875,333 339 69,457 13,834 11,061 94,691 8.00 8.00 8.00 8.00 ANAL ACCRUAL (7) 9 28 66 2,128 198,493 671 199,164 42 8,682 1,729 1,383 11,836 Exhibit No. 1 Case No. IPC-E-12..8 J. Spanos, IPC Page 351 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 332.20 RESERVOIRS, DAMS AND WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) UPPER MALAD INTERIM SURVIVOR CURVE.. IOWA 95 - S4 PROBABLE RETIREMENT YEA.. 5 - 2 033 NET SALVAGE PERCENT.. - 10 1948 1953 1965 1967 1986 1988 1991 1995 2008 1,208,792.27 1,098.78 1,832.99 8,576.49 4,267.41 45,385.94 7,408.61 15,165.95 49,578.78 1,342,107.22 1,009,354 891 1,371 6,318 2,502 25,568 3,888 7,039 6,566 1,063,497 UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEA.. 5-2033 NET SALVAGE PERCENT.. -10 1937 1991 2005 2006 2008 2009 398,868.53 185,720.64 452,974.92 70,626.64 180,205.43 226,978.09 1,515,374.25 352,794 97,468 107,079 14,430 23,864 20,875 616,510 UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 10 1947 1949 1982 1986 1991 2004 2006 2007 2,132,576.49 254.55 50,242.22 2,712.46 6,259.23 483,981.33 48,298.58 13 8,996.83 1,790,716 211 31,481 1,590 3,285 128,862 9,868 23,595 ALLoe. BOOK RESERVE (4) 1,056,144 932 1,435 6,611 2,618 26,753 4,068 7,365 6,870 1,112,797 257,383 71,108 78,120 10,528 17,410 15,229 449,779 1,917,311 226 33,707 1,702 3,517 137,972 10,566 25,263 ~i-310 FUE BOOK ACCRUALS (5) 273,527 276 582 2,823 2,076 23,171 4,081 9,317 47,666 363,521 181,372 133,184 420,152 67,162 180,816 234,446 1,217,133 428,523 54 21,560 1,281 3,368 394,408 42,563 127,633 REM. LIFE (6) 19.79 20.57 21.62 21.70 21.91 21.91 21.92 21.92 21.92 17.40 21. 92 21.92 21. 92 21.92 21.92 19.61 19.96 21.91 21.91 21.92 21.92 21.92 21.92 ANAL ACCRUAL (7) 13,821 13 27 130 95 1,058 186 425 2,175 17,930 10,424 6,076 19,168 3,064 8,249 10,696 57,677 21,852 3 984 58 154 17,993 1,942 5,823 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 352 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 332. 20 RESERVOIRS, DAMS AND WATERWAYS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. -10 2008 2009 2010 7,367.66 415,390.98 41,600.16 3,327,680.49 976 38,204 1,997 2,030,785 UPPER SALMON COMMON INTERIM SURVIVOR CURVE.. IOWA 95-S4 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 10 1937 1939 1943 1946 1947 1948 1953 1986 1988 2006 167,587.22 66.09 343,750.81 177.74 40,396.36 604.81 2,880.81 8,061.70 32,764.91 129,825.35 726,115.80 148,229 58 294,991 150 33,921 505 2,336 4,726 18,458 26,525 529,899 HELLS CANON COMMON INTERIM SURVIVOR CURVE.. IOWA 95 -S4 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. -10 1967 1983 1,263,725.45 2,459,443.25 796,443 1,222,375 ALLOC. BOOK RESERVE (4 ) 1,045 40,905 2,138 2,174,352 153,768 60 306,014 156 35,188 524 2,423 4,903 19,148 27,516 549,699 1,135,927 1,743,413 3,723,168.70 2,018,818 2,879,340 225,740,805.68 134,123,958 138,483,936 FUTURE BOOK ACCRUALS (5 ) 7,059 416,025 43,622 1,486,097 30,578 13 72,112 40 9,248 141 746 3,965 16,894 115,292 249,028 REM. LIFE (6) 21.92 21.92 21. 92 17.40 17.89 18.80 19.42 19.61 19.79 20.57 21. 91 21. 91 21. 92 254,171 32.79 961,975 33.97 1,216,146 109,830,952 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 31.3 ~i-311 ANAL ACCRUAL (7) 322 18,979 1,990 70,100 1,757 1 3,836 2 472 7 36 181 771 5,260 12,323 7,751 28,318 36,069 3,506,054 1. 55 Exibit No. 1 Case No. IPC-E.12-08 J. Spanos, IPC Page 353 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 332.30 RESERVOIRS, DAMS AN WATERWAYS - NEZ PERCE CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) BROWNLEE INTERIM SURVIVOR CURVE.. SQUARE PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1997 5',472,398.44 1,593,453 5,472,398.44 1,593,453 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 34.1 3,880,127 ALLOC. BOOK RESERVE (4) 1,592,271 1,592,271 ~i-312 FUTE BOOK ACCRUALS (5 ) REM. LIFE (6) 3,880,12734.08 ANAL ACCRUAL (7 ) 113,853 113,853 2.08 Exhibit No. 1 Case No. IPC-E.12-08 J. Spanos,IPC Page 354 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) MILNER DAM INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR. . 6-2067 NET SALVAGE PERCENT.. - 10 1992 878,005.87 878,005.87 261,241 261,241 270,270 270,270 AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 8 0- R3 PROBABLE RETIREMENT YEAR.. 2 -2055 NET SALVAGE PERCENT.. - 10 1978 1979 1980 1982 1990 1991 1992 1994 1997 2000 2006 2007 2009 2010 2011 26,053,998.06 3,638.10 8,880.45 2,048.86 223,419.84 30,804.66 12,021. 52 18,939.57 6,572.33 17,761.35 23,672.71 802.78 87,892.15 165,184.38 16,006.97 26,671,643.73 12,988,726 1,778 4,254 940 82,431 10,977 4,132 6,002 1,798 4,016 2,716 75 4,289 4,116 102 13,116,352 14,414,426 1,973 4,721 1,043 91,479 12,182 4,586 6,661 1,995 4,457 3,014 83 4,760 4,568 113 14,556,061 BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR. . 7-2045 NET SALVAGE PERCENT.. -10 1960 1961 1970 1973 1980 1982 1983 9,510,360.06 1,002.92 8,174.66 240,249.77 27,737,329.26 64,993.61 44,181. 75 6,596,747 689 5,076 143,459 14,859,498 33,548 22,348 8,124,000 849 6,251 176,672 18,299,710 41,315 27,522 ~i-313 FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6 ) 695,536 695,536 49.76 14,244,972 2,029 5,048 1,211 154,283 21,703 8,638 14,173 5,234 15,081 23,026 800 91,922 177,135 17,494 14,782,747 2,337,397 255 2,741 87,603 12,211,352 30,178 21,078 37.86 38.13 38.39 38.87 40.48 40.65 40.80 41.10 41. 51 41.86 42.43 42.51 42.65 42.72 42.77 27.23 27.53 29.73 30.31 31. 41 31.67 31. 80 ANAL ACCRUAL (7 ) 13,978 13,978 376,254 53 131 31 3,811 534 212 345 126 360 543 19 2,155 4,146 409 389,129 85,839 9 92 2,890 388,773 953 663 Exhibit No. 1 Case No. IPG-E-12-08 J. Spanos, IPC Page 355 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TUBINES AN GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 10 1985 1987 1988 1989 1990 1991 1992 1993 1994 1996 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2010 9,749.33 2,022.60 320,338.27 9,611.12 30,502.66 56,657.55 112,963.98 37,855.09 20,461. 04 137,309.89 33,151.35 4,530.57 1,231,587.25 175,468.21 37,972.47 1,507,915.90 90,318.54 153,996.73 37,618.48 2,116.07 54,305.92 61, 323.34 41,734,068.39 4,724 935 144,233 4,211 12,981 23,374 45,093 14,582 7,583 46,688 10,171 1,311 333,620 44,173 8,801 318,007 17,054 25,562 5,334 246 4,867 1,927 22,736,842 BLISS INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -10 1950 1952 1959 1964 1966 1972 1978 1983 1985 1987 3,049,975.72 418.06 773.09 7,470.69 9,174.16 548.90 2,236.45 223,909.71 6,144.79 609,666.22 2,519,451 342 606 5,658 6,846 389 1,486 138,741 3,682 351,760 ALLOC. BOOK RESERVE (4) 5,818 1,151 177,625 5,186 15,986 28,785 55,533 17,958 9,339 57,497 12,526 1,615 410,858 54,400 10,839 391,631 21,002 31,480 6,569 303 5,994 2,373 28,000,785 2,517,287 342 605 5,653 6,840 389 1,485 138,622 3,679 351,458 111-314 FUTRE BOOK ACCRUALS (5) 4,907 1,073 174,747 5,386 17,567 33,538 68,728 23,683 13,169 93,544 23,941 3,369 943,888 138,615 30,931 1,267,077 78,348 137,916 34,811 2,025 53,743 65,083 17,906,690 837,687 118 245 2,565 3,251 215 975 107,679 3,080 319,175 REM. LIFE (6) 32.03 32.24 32.34 32.43 32.52 32.61 32.69 32.77 32.85 32.99 33.12 33.18 33.24 33.29 33.34 33.39 33.44 33.48 33.52 33.56 33.60 33.67 18.10 18.44 19.42 19.96 20.14 20.60 20.95 21.18 21.26 21.33 ANAL ACCRUAL (7) 153 33 5,403 166 540 1,028 2,102 723 401 2,836 723 102 28,396 4,164 928 37,948 2,343 4,119 1,039 60 1,599 1,933 575,958 46,281 6 13 129 161 10 47 5,084 145 14,964 Exhibit No. 1 Case No. IPC-E-12-D8 J. Spanos, IPC Page 356 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) BLISS INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 1 0 1988 1991 1992 1993 1994 1995 1997 1998 1999 2007 2008 2009 2010 81,740.40 18,100.05 7,291.73 26,489.74 59,884.20 141,076.12 41,149.84 27,427.28 50,646.45 9,708.26 208,574.87 17,167.17 3,841.36 4,603,415.26 46,185 9,527 3,734 13,171 28,845 65,612 17,680 11,255 19,750 1,651 27,603 1,580 183 3,275,737 CASCADE INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. -10 1983 1985 1993 1996 1998 2010 8,866,832.00 90,584.87 18,472.48 51,666.41 2,708.45 33,743.75 9,064,007.96 3,749,641 36,338 5,647 13,704 641 749 3,806,720 CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 80 - R3 PROBABLE RETIREMENT YEAR.. 6-2017 NET SALVAGE PERCENT.. -10 1937 1940 1943 1982 17,751.56 437.08 121.90 36.19 18.007 442 123 33 ALLOC. BOOK RESERVE (4 ) 46,145 9,519 3,731 13,160 28,820 65,556 17,665 11,245 19,733 1,650 27,579 1,579 183 3,272,923 3,858,558 37,394 5,811 14,102 660 771 3,917,295 9.539 234 65 17 ~i-315 FUTURE BOOK ACCRUALS (5) 43,769 10,391 4,290 15,979 37,052 89,628 27,600 18,925 35,978 9,030 201,853 17,305 4,043 1,790,834 5,894,957 62,250 14,509 42,731 2,320 36,347 6,053,114 9,988 247 69 22 REM. LIFE (6) 21. 37 21.46 21.49 21. 52 21. 54 21. 57 21.61 21. 63 21.65 21.77 21.79 21.80 21.81 42.96 43.57 45.57 46.17 46.52 48.10 5.54 5.61 5.66 5.96 ANAL ACCRUAL (7) 2,048 484 200 743 1,720 4,155 1,277 875 1,662 415 9,264 794 185 90,662 137,220 1,429 318 926 50 756 140,699 1,803 44 12 4 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 357 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULTED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 6 - 2 0 1 7 NET SALVAGE PERCENT.. -10 1983 1994 2003 2006 21,340.74 13,779.08 685,441.75 3,543.11 742,451.41 19,313 11,196 430,692 1,771 481,577 HELLS CANYON INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. - 10 1967 1969 1982 1986 1988 1989 1991 1992 1993 1994 1996 1999 2000 2003 2004 2007 2009 2010 2011 8,505,037.96 1,702.36 6,019.36 790,592.73 209,977.03 47,455.23 10,175.24 5,450.16 20,427.33 46,749.60 48,731.01 26,551.29 17,530.31 1,140,912.88 6,649.07 30,694.54 607,504.92 519,531. 74 97,740.36 12,139,433.12 5,473,460 1,070 3,107 374,490 94,543 20,793 4,198 2,176 7,869 17,325 16,570 7,681 4,749 240,609 1,256 3,572 37,148 16,322 792 6,327,730 ALLOC. BOOK RESERVE (4) 10,231 5,931 228,158 938 255,114 4,465,202 B73 2,535 305,506 77,127 16,963 3,425 1,775 6,419 14,134 13,518 6,266 3,874 196,287 1,025 2,914 30,305 13,315 646 5,162,108 ~i-316 FURE BOOK ACCRUALS (5 ) 13,244 9,226 525,828 2,959 561,583 4,890,340 1,000 4,087 564,146 153,847 35,238 7,768 4,220 16,051 37,291 40,086 22,940 15,409 1,058,717 6,289 30,850 637,950 558,170 106,868 8,191,268 REM. LIFE (6) 5.96 5.98 5.99 5.99 29.08 29.52 31.67 32.13 32.34 32.43 32.61 32.69 32.77 32.85 32.99 33.18 33.24 33.39 33.44 33.56 33.64 33.67 33.69 ANAL ACCRUAL (7) 2,222 1,543 87,784 494 93,906 168,169 34 129 17,558 4,757 1,087 238 129 490 1,135 1,215 691 464 31,708 188 919 18,964 16,578 3,172 267,625 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 358 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) LOWER MAAD INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -10 1948 1968 1980 1994 1995 1999 404,412.06 51,845.09 1,744.80 6,142.49 1,818.29 32,527.06 498,489.79 337,675 38,072 1,130 2,959 846 12,684 393,366 LOWER SALMON INTERIM SURVIVOR CUVE.. IOWA 80 - R3 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. - 10 1949 1953 1955 1958 1959 1960 1980 1981 1983 1984 1986 1990 2001 2004 2005 2007 2008 2009 3,100,817.83 705.29 96.31 261.91 1,420.16 1,560.16 3,186.04 27,176.61 1,085,191.64 B,578.75 15,023.96 21,902.03 46,108.01 43,181. 63 57,616.43 374,895.60 88,377.26 3,505.74 4,879,605.36 2,575,536 573 77 207 1,113 1,215 2,063 17,355 672,417 5,230 8,837 11,826 15,917 11,506 13,631 63,738 11,696 323 3,413,260 ALLOC. BOOK RESERVE (4 ) 336,961 37,991 1,128 2,953 844 12,657 392,534 2,613,599 581 78 210 1,129 1,233 2,093 17,611 682,355 5,307 8,968 12,001 16,152 11,676 13,832 64,680 11,869 328 3,463,704 ~i-317 FUTUE BOOK ACCRUALS (5) 107,892 19,038 792 3,804 1,156 23,123 155,805 797,300 194 28 78 433 483 1,411 12,283 511,356 4,129 7,559 12,091 34,567 35,824 49,546 347,705 85,346 3,529 1,903,862 REM. LIFE (6) 17.74 20.31 21. 05 21.54 21.57 21.65 17.92 18.60 18.90 19.30 19.42 19.54 21. 05 21. 09 21.18 21.22 21. 30 21. 43 21. 69 21. 74 21.75 21. 77 21.79 21.80 ANAL ACCRUAL (7) 6,082 937 38 177 54 1,068 8,356 44,492 10 1 4 22 25 67 582 24,143 195 355 564 1,594 1,648 2,278 15,972 3,917 162 96,031 Exhibit No. 1 Case No. IPC-E.12-ü J. Spanos, IPC Page 359 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) MILNER INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 11-2068 NET SALVAGE PERCENT.. -10 1992 1994 1997 1998 23,271,570.58 8,047.96 50,148.46 22,654.08 23,352,421. 08 6,832,300 2,160 11,468 4,865 6,850,793 OXBOW INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. - 10 1961 1975 1983 1988 1990 1991 1992 1994 1995 1996 1999 2003 2004 2007 2008 2009 2010 2011 8 , 3 5 4 , 194 . 5 6 203,444.80 40,450.68 1,484,621.94 156,858.45 231,311.29 14,157.64 66,019.79 18,210.37 50,385.17 30,566.34 127,567.27 704.11 16,893.02 20,635.63 88,007.68 35,886.74 10,333.10 10,950,248.58 5,735,789 118,100 20,460 668,454 66,754 95,429 5,651 24,466 6,477 17,132 8,843 26,903 133 1,966 1,849 5,382 1,127 84 6,804,999 ALLOC. BOOK RESERVE (4 ) 6,991,528 2,210 11,735 4,978 7,010,452 5,619,697 115,710 20,046 654,925 65,403 93,498 5,537 23,971 6,346 16,785 8,664 26,358 130 1,926 1,812 5,273 1,104 82 6,667,266 ~i-318 FUTURE BOOK ACCRUALS (5) 18,607,200 6,642 43,428 19,941 18,677,211 3,569,917 108,080 24,450 978,160 107,141 160,945 10,037 48,651 13,686 38,638 24,959 113,966 644 16,656 20,888 91,535 38,371 11,284 5,378,007 REM. LIFE (6) 50.65 51.29 52.16 52.43 27.53 30.66 31.80 32.34 32.52 32.61 32.69 32.85 32.92 32.99 33.18 33.39 33.44 33.56 33.60 33.64 33.67 33.69 ANAL ACCRUAL (7) 367,368 129 833 380 368,710 129,674 3,525 769 30,246 3,295 4,935 307 1,481 416 1,171 752 3,413 19 496 622 2,721 1,140 335 185,317 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 360 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 80 - R3 PROBABLE RETIREMENT YEAR.. 5 - 2 031 NET SALVAGE PERCENT.. - 10 1919 1921 1922 1927 1929 1930 1936 1956 1963 1964 1966 1980 1983 1985 1987 1988 1992 1998 2007 2008 201Ö 13,793.09 136,152.39 10.14 60.62 1,883.24 93.40 2,602.13 4,342.66 44,894.13 7,845.37 2,058.90 23,340.00 3,951.44 10,134.46 885,929.99 139,026.42 19,604.53 248,004.96 120,059.85 1,283.77 877,945.92 2,543,017.41 13,200 129,420 10 56 1,738 86 2,334 3,543 35,144 6,101 1,579 15,678 2,547 6,327 533,698 82,150. 10,546 107,884 22,095 185 46,365 1,020,686 STRIKE INTERIM SURVIVOR CURVE.. IOWA 80 - R3 PROBABLE RETIREMENT YEAR.. 3 - 2 032 NET SALVAGE PERCENT.. - 10 1952 1954 1955 1965 1980 1983 1988 1989 1991 1992 1993 3,072,389.84 6,622.80 7,404.03 8,252.29 2,934.40 237,480.01 496,446.04 329,514.17 33,242.77 10,143.47 8,715.81 2,538,405 5,414 6,019 6,302 1,941 150,517 287,823 186,981 17,991 5,344 4,462 ALLOC. BOOK RESERVE (4) 11,388 111,653 9 48 1,499 74 2,014 3,057 30,319 5,263 1,362 13,526 2,197 5,458 460,432 70,873 9,098 93,074 19,062 160 40,000 880,567 2,407,925 5,136 5,710 5,978 1,841 142,780 273,028 177,370 17,066 5,069 4,233 ~i-319 FUTURE BOOK ACCRUALS (5) 3,784 38,114 3 18 572 29 849 1,720 19,064 3,366 903 12,148 2,149 5,689 514,091 82,057 12,467 179,732 113,004 1,253 925,740 1,916,752 971,704 2,149 2,435 3,099 1,387 118,448 273,062 185,096 19,501 6,089 5,355 REM. LIFE (6) 10.36 10.81 11.04 12.20 12.67 12.90 14.26 17.60 18.27 18.35 18.50 19.23 19.33 19.40 19.46 19.48 19.58 19.69 19.81 19.82 19.83 17.68 17.95 18.08 19.11 19.99 20.11 20.27 20.30 20.35 20.38 20.40 ANAL ACCRUAL (7) 365 3,526 1 45 2 60 98 1,043 183 49 632 111 293 26,418 4,212 637 9,128 5,704 63 46,684 99,254 54,961 120 135 162 69 5,890 13,471 9,118 958 299 262 Exhibit No. 1 Case No. IPC-E-12-QS J. Spanos, IPC . Page 361 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AN GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) STRIKE INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 3-2032 NET SALVAGE PERCENT.. -10 1995 1997 1999 2000 2009 2011 7,585.60 4,321.06 86,122.25 30,209.42 2,368,189.81 2,088,356.73 8,797,930.50 3,638 1,917 34,754 11,521 228,980 27,474 3,519,483 SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 80 - R3 PROBABLE RETIREMENT YEAR.. 6 - 2 04 2 NET SALVAGE PERCENT.. - 10 1994 1995 2000 2001 25 , 378 , 612 . 17 109.29 94,232.06 302,707.30 25,775,660.82 9,979,860 41 27,328 81,736 10,088,965 TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 12 -2040 NET SALVAGE PERCENT.. - 10 1938 1942 1943 1945 1964 1971 1992 1993 1996 1997 2004 170,167.75 46.80 147.46 2,009.05 2,216.59 48,402.10 1,974.69 75,084.73 468,611.10 38,245.74 623,537.98 1,430,443.99 144,677 39 121 1,627 1,539 31,260 858 31,550 175,018 13,629 132,151 532,469 ALLOC. BOOK RESERVE (4) 3,451 1,818 32,968 10,929 217,210 26,062 3,338,573 9,005,499 37 24,660 73,756 9,103,952 115,263 31 96 1,296 1,226 24,904 684 25,136 139,435 10,858 105,283 424,212 111-320 FUTE BOOK ACCRUALS (5) 4,893 2,935 61,767 22,302 2,387,799 2,271,131 6,339,151 18,910,974 83 78,995 259,222 19,249,275 71,922 20 66 914 1,212 28,338 1, 489 57,458 376,037 31,212 580,609 1,149,276 REM. LIFE (6) 20.45 20.49 20.52 20.54 20.65 20.66 30.05 30.11 30.36 30.40 17.89 19.35 19.71 20.41 25.49 26.63 28.57 28.62 28.77 28.82 29.08 ANAL ACCRUAL (7) 239 143 3,010 1,086 115,632 109,929 315,484 629,317 3 2,602 8,527 640,449 4,020 1 3 45 48 1,064 52 2,008 13,070 1,083 19,966 41,360 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 362 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 333. 00 WATERWHEELS, TURB INES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) TWIN FALLS (NEW) INTERIM SURVIVOR CURVE.. IOWA 80 -R3 PROBABLE RETIREMENT YEA.. 12-2040 NET SALVAGE PERCENT.. -10 1995 15,676,967.761999 1,494.81 15,678,462.57 6,106,163 478 6,106,641 THOUSAN SPRINGS INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 6 - 2 0 19 NET SALVAGE PERCENT.. -10 1919 1921 1923 1930 1939 1943 1955 1964 1967 1969 1983 1986 1990 1992 1993 1999 2000 2001 21,071.91 94,121. 78 1,857.04 7.74 190.72 159.57 2,423.80 25,691.86 3,165.29 0.10 10,249.74 64,830.48 41,577.62 12,463.62 171,817.85 47,633.22 229,205.71 2,654.89 729,122.94 21,337 95,102 1,872 8 188 157 2,328 24,105 2,941 8,759 53,971 33,097 9,639 130,756 31,406 145,842 1,621 563,129 UPPER MALAD INTERIM SURVIVOR CURVE.. IOWA 80 - R3 PROBABLE RETIREMENT YEAR.. 5 -2033 NET SALVAGE PERCENT.. -10 1948 1953 336,184.07 536.06 280,706 435 ALLOC. BOOK RESERVE (4 ) 5,253,000 411 5,253,411 23,179 103,534 2,043 9 210 176 2,666 28,261 3,482 o 11,275 71,314 43,993 12,812 173,803 41,745 193,855 2,155 714,510 281,882 437 ~i-321 FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6 ) 11,991,665 28.73 1,233 28.90 11,992,898 1,742 898 15,197 10,651 58,271 766 87,525 7.95 7.96 7.96 7.98 7.98 7.98 87,920 17.7415318.60 ANAL ACCRUAL (7 ) 417,392 43 417,435 219 113 1,909 1,335 7,302 96 10,974 4,956 8 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 363 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AN GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) UPPER MA INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RET IREMENT YEAR.. 5 - 2033 NET SALVAGE PERCENT.. -10 1980 1985 1986 1995 1,708.20 102,217.21 34,021.56 1,818.27 476,485.37 1,106 61,241 20,012 846 364,346 UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 5 -2033 NET SALVAGE PERCENT.. -10 1937 1939 1943 1944 1946 1948 1969 1984 1985 1988 1990 1991 1997 2002 2005 2007 2009 374,649.28 108.51 122.91 11,284.91 145.68 3,358.72 44,068.90 54,767.81 38,919.52 231,607.72 124,221.06 114,261.89 4,144.56 71,255.24 119,003.02 94,437.33 241,045.80 1,527,402.86 330,746 95 ios 9,622 123 2,804 32,098 33,388 23,318 130,862 67,071 60,140 1,781 22,870 28,155 16,056 22,180 781,414 UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 80-R3 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. - 10 1947 1949 582,908.55 5,924.68 489,293 4,921 ALLOC. BOOK RESERVE (4) 1,111 61,498 20,096 850 365,873 312,769 90 99 9,099 116 2,652 30,353 31,573 22,051 123,749 63,426 56,871 1,684 21,627 26,625 15,183 20,974 738,942 317,578 3,194 ~i-322 FUTE BOOK ACCRUALS (5 ) 768 50,941 17,328 1, 151 158,261 99,345 30 36 3,314 44 1,043 18,122 28,671 20,761 131,019 73,218 68 1817 2,875 56,754 104,279 88,698 244,176 941,201 REM. LIFE (6) 21.05 21.26 21.30 21.57 15.30 15.79 16.71 16.93 17.35 17.74 20.38 21.22 21.26 21.37 21.43 21.46 21.61 21. 70 21.75 21.77 21.80 323,621 17.55 3,323 17.92 ANAL ACCRUAL (7) 36 2,396 814 53 8,263 6,493 2 2 196 3 59 889 1,351 977 6,131 3,417 3,207 133 2,615 4,794 4,074 11,201 45,544 18,440 185 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 364 of 491 IDAHO POWER COMPANY ACCOUNT 333.00 WATERWHEELS, TURBINES AND GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL CALCULATED ALLOC.BOOK FUTURE BOOK REM.ANAL YEAR COST ACCRUED RESERVE ACCRUALS LIFE ACCRUAL (1 )(2)(3 )(4)(5 )(6)(7) UPPER SALMON B INTERIM SURVIVOR CURVE. .IOWA 80-R3 PROBABLE RETIREMENT YEAR. .5-2033 NET SALVAGE PERCENT..-10 1982 1,123.18 707 459 777 21.14 3719832,293.54 1,421 922 1,601 21.18 7619892,135.56 1,181 767 1,583 21.40 7419913,070.59 1,616 1,049 2,329 21.46 109200413,464.36 3,588 2,329 12,482 21. 74 57420061,430,445.39 292,559 189,887 1,383,603 21.76 63,585 2008 201,106.24 26,615 17,275 203,942 21.79 9,35920091,391,971.53 128,082 83,132 1,448,036 21. 80 66,424201034,683.88 1,657 1,075 37,077 21.81 1,700 2011 35,808.96 446 289 39,100 21.81 1,793 3,704,936.46 952,086 617,956 3,457,474 162,356 196,177,253.47 91,397,836 94,406,508 121,388,470 3,971,490 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .30.6 2.02 111-323 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 365 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULTED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) FUURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) HAGERMA MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 50-Rl.5 PROBABLE RETIREMENT YEAR.. 6-2028 NET SALVAGE PERCENT.. -5 1964 1998 841. 88 38,224.88 648 17,000 582 15,270 302 24,866 12.57 15.95 24 1,559 39,066.76 17,648 15,852 25,168 1,583 MILNER DAM INTERIM SURVIVOR CURVE.. IOWA 50 - Rl . 5 PROBABLE RETIREMENT YEAR.. 6-2067 NET SALVAGE PERCENT.. -5 1992 270,948.91 86,291 103,497 2008 66,430.54 3,850 4,618 2009 180.00 7 8 337,559.45 90,148 108,123 180,999 65,134 181 34.27 42.97 43.42 5,282 1,516 4 246,314 6,802 HELLS CANYON MAINTENANCE SHOP INTERIM SURVIVOR CURVE. .IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR. .7-2045 NET SALVAGE PERCENT. .-5 2008 36,070.B3 3,027 2,245 35,629 30.51 1,168 36,070.83 3,027 2,245 35,629 1,168 AMERICAN FALLS INTERIM SURVIVOR CURVE. .IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR. .2 -2055 NET SALVAGE PERCENT. .-5 1978 2,224,441.71 1,166,407 1,354,367 981,297 24.71 39,713197968,818.86 35,250 40,930 31,329 25.23 1,242 1984 10,554.67 4,741 5,505 5,577 27.79 20119855,015.14 2,188 2,541 2,725 28.29 961989832.98 319 370 504 30.19 17199135,710.70 12,693 14,738 22,758 31.09 732 1992 3,822.57 1,305 1,515 2,498 31.52 79 1993 20,356.07 6,656 7,729 13,645 31.95 427199627,530.33 7,781 9,035 19,872 33.15 599 111-324 Exhibit NO.1 Case No. IPC-E-12-Q8 J. Spanos, IPC Page 366 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 50-R1.5 PROBABLE RETIREMENT YEAR.. 2-2055 NET SALVAGE PERCENT.. - 5 1997 1999 2000 2001 2002 2005 2007 2008 14,514.13 118,032.45 126,565.90 37,165.23 80,291.01 73,309.95 34,496.04 109,783.70 2,991,241.44 3,877 27,791 27,728 7,507 14,823 9,484 3,079 7,494 1,339,123 BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 50-Rl. 5 PROBABLE RETIREMENT YEAR.. 7 -2045 NET SALVAGE PERCENT.. -5 1960 1963 1967 1969 1973 1976 1979 1980 1982 1984 1986 1987 1989 1990 1991 1992 1993 1995 1996 1998 1999 2000 2001 2002 732,248.91 2,297.08 6,097.37 7,603.63 48,206.25 38,234.10 2,411.31 2,322,074.16 4,021.06 11,741.20 9,003.56 834.38 4,636.24 10,095.90 99,204.76 80,083.27 24,277.59 61,452.19 7,985.30 2,309,532.38 10,567.40 21.455.10 193,279.91 68,450.96 532,313 1,608 4,039 4,888 29,053 21,848 1,300 1,226,282 2,033 5,664 4,128 372 1,951 4,116 39,134 30,488 8,899 20,720 2,570 668,914 2,880 5,473 45,776 14,910 ALLOC. BOOK RESERVE (4) 4,502 32,269 32,196 8,717 17,212 11,012 3,575 8,702 1,554,915 628,103 1,897 4,766 5,768 34,281 25,780 1,534 1,446,952 2,399 6,683 4,871 439 2,302 4,857 46,176 35,974 10,500 24,449 3,032 789,285 3,398 6,458 54,013 17,593 ~i-325 FUTURE BOOK ACCRUALS (5) 10,738 91,665 100,698 30,307 67,094 65,963 32,646 106,571 1,585,889 140,759 515 1,636 2,216 16,335 14,366 998 991,226 1,823 5,645 4,583 437 2,566 5,744 57,989 48,113 14,991 40,076 5,352 1,635,724 7,698 16,070 148,931 54,280 REM. LIFE (6 ) 33.53 34.25 34.59 34.93 35.25 36.15 36.70 36.96 15.34 16.59 18.27 19.12 20.79 22.01 23.18 23.55 24.28 24.98 25.64 25.95 26.56 26.85 27.12 27.39 27.65 28.14 28.37 28.80 29.01 29.20 29.39 29.57 ANAL ACCRUAL (7) 320 2,676 2,911 868 1,903 1,825 890 2,883 57,382 9,176 31 90 116 786 653 43 42,090 75 226 179 17 97 214 2,138 1,757 542 1,424 189 56,796 265 550 5,067 1,836 Exhibit No. 1 Case No. IPG-E-12-08 J. Spanos. IPC Page 367 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 50-R1.5 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. -5 2003 2004 2005 2006 2007 2008 2009 2010 2011 26,864.17 153,344.36 59,555.74 36,959.75 4,319.33 419,613.79 1,161,151.20 1,578,475.86 211,213.34 9,727,291.55 5,318 27,163 9,250 4,903 470 35,212 66,569 46,573 1,570 2,876,387 BLISS INTERIM SURVIVOR CURVE.. IOWA 50 -Rl. 5 PROBABLE RETIREMENT YEAR.. 5 - 2033 NET SALVAGE PERCENT.. - 5 1991 1992 1994 1995 1996 1997 1999 2002 2003 2004 2005 2006 2011 68,432.67 13,030.06 732.92 380,262.91 30,216.99 13,348.96 1,225,620.82 102,958.20 1,052.79 28,686.31 9,148.75 11,632.55 1,015,418.01 2,900,541.94 33,626 6,229 329 164,865 12,612 5,343 444,998 30,746 289 7,120 2,017 2,217 11,664 722,055 ALLOC. BOOK RESERVE (4 ) 6,275 32,051 10,915 5,785 555 41,548 78,548 54,954 1,853 3,393,993 23,812 4,411 233 116,748 8,931 3,784 315,123 21,773 205 5,042 1,428 1,570 8,260 511,320 ~i-326 FUTUE BOOK ACCRUALS (5 ) 21,932 128,961 51,619 33,022 3,981 399,046 1,140,661 1,602,446 219,921 6,819,663 48,042 9,271 537 282,528 22,797 10,233 971,779 86,333 901 25,079 8,178 10,644 1,057,929 2,534,249 REM. LIFE (6) 29.74 29.91 30.07 30.22 30.37 30.51 30.65 30.78 30.87 19.44 19.54 19.73 19.82 19.90 19.98 20.13 20.33 20.39 20.45 20.51 20.56 20.79 ANAL ACCRUAL (7) 737 4,312 1,717 1,093 131 13,079 37,216 52,061 7,124 241,827 2,471 474 27 14,255 1,146 512 48,275 4,247 44 1,226 399 518 50,886 124,480 Exhibit No. 1 Case No. IPC.E-12-08 J. Spanos,lPC Page 368 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) CASCADE INTERIM SURVIVOR CURVE.. IOWA 50-Rl.5 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. -5 1983 1989 1993 1998 2000 2002 2003 2005 2007 2010 1,525,213.15 1,280.22 5,050.09 290,949.60 6,399.33 204,490.97 153,256.62 21,852.80 289,238.49 36,293.11 2,534,024.38 690,139 474 1,580 68,978 1,313 35,153 23,740 2,606 23,686 785 848,454 CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 017 NET SALVAGE PERCENT.. - 5 1937 1940 1959 1961 1962 1963 1968 1973 1981 1982 1983 1984 2001 2007 98.28 69.87 288.49 100.57 359.87 115.56 51.69 1,305.22 1,352.01 1,095.94 83,518.33 4,176.09 3,965.88 23,969.77 120,467.57 94 67 267 93 331 106 47 1,166 1,167 941 71,259 3,540 2,574 9,965 91,617 ALLOC. BOOK RESERVE (4) 370,387 254 848 37,019 705 18,866 12,741 1,399 12,712 421 455,352 97 69 277 96 343 110 49 1,209 1,210 975 73,871 3,670 2,668 10,330 94,975 ~i-327 FUTURE BOOK ACCRUALS (5) 1,231,087 1,090 4,455 268,478 6,015 195,849 148,179 21,547 290,989 37,686 2,205,374 6 4 26 9 35 11 6 162 210 175 13,823 715 1,496 14,838 31,516 REM. LIFE (6) 28.14 31. 54 33.68 36.14 37.04 37.90 38.31 39.10 39.84 40.86 4.44 4.61 5.33 5.39 5.42 5.44 5.56 5.65 5.76 5.77 5.78 5.79 5.90 5.92 ANAL ACCRUAL (7) 43,749 35 132 7,429 162 5,168 3,868 551 7,304 922 69,320 1 1 5 2 6 2 1 29 36 30 2,392 123 254 2,506 5,388 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 369 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) HELLS CANYON INTERIM SURVIVOR CURVE.. IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR. . 7-2045 NET SALVAGE PERCENT.. -5 1961 1963 1967 1968 1971 1973 1975 1979 1984 1985 1986 1987 1988 1991 1992 1993 1995 1996 1997 2000 2002 2003 2004 2005 2006 2007 2008 2009 2010 3,529.03 2,599.58 910,705.90 994.71 1,804.43 360.32 233.37 1,607.54 7,193.00 7,931.06 7,631.26 11 7,297.65 3,351.41 118,741.49 29,132.04 38,684.59 63,168.04 17,701.17 90,145.01 1,619,680.00 22,278.24 5,353.93 79,721.47 38,004.42 11,285.43 4,404.01 181,539.39 6,822.89 311,072.46 3,702,973 .84 2,534 1,819 603,226 649 1,124 217 136 866 3,470 3,733 3,498 52,343 1,454 46,840 11,091 14,180 21,298 5,697 27,586 413,142 4,853 1,060 14,121 5,903 1,497 479 15,234 391 9,178 1,267,619 LOWER MAAD INTERIM SURVIVOR CURVE.. IOWA 50 -R1. 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -5 1948 1960 1968 47,364.13 254.05 1,331.63 39,429 193 940 ALLOC. BOOK RESERVE (4 ) 2,179 1,564 518,668 558 966 187 117 745 2,984 3,210 3,008 45,006 1, 25040,274 9,536 12,192 18,313 4,898 23,719 355,229 4,173 911 12,142 5,076 1,287 412 13,099 336 7,891 1,089,929 33,248 163 793 ~i-328 FUTURE BOOK ACCRUALS (5 ) 1,527 1,166 437,573 486 928 192 128 943 4,569 5,118 5,005 78,157 2,269 84,404 21,052 28,427 48,014 13,688 70,933 1,345,435 19,219 4,710 71,566 34,829 10,563 4,212 177,518 6,828 318,735 2,798,194 16,485 104 606 REM. LIFE (6) 15.76 16.59 18.27 18.70 19.96 20.79 21. 61 23.18 24.98 25.31 25.64 25.95 26.26 27.12 27.39 27.65 28.14 28.37 28.59 29.20 29.57 29.74 29.91 30.07 30.22 30.37 30.51 30.65 30.78 10.33 13.53 15.52 ANAL ACCRUAL (7) 97 70 23,950 26 46 9 6 41 183 202 195 3,012 86 3,112 769 1,028 1,706 482 2,481 46,077 650 158 2,393 1,158 350 139 5,818 223 10,355 104,822 1,596 8 39 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 370 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) LOWER MA INTERIM SURVIVOR CURVE.. IOWA 50 - Rl . 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 5 1972 1976 1978 1981 1983 1985 1989 1990 1992 1996 1998 1999 2000 2001 2002 2003 2005 2006 2010 5,741.69 425.93 1,032.71 14,867.57 1,058.03 1,626.73 18,692.34 44,973.20 14,556.51 92,203.70 5,955.20 20,234.24 12,608.82 5,126.47 7,515.38 15,134.63 32,256.62 6,425.61 6,370.81 355,756.00 3,884 275 649 8,939 616 914 9,658 22,684 6,958 3B,485 2,276 7,347 4,325 1,647 2,244 4,151 7,111 1,225 284 164,234 LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 50-R1.5 PROBABLE RET IREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. - 5 1949 1954 1955 1963 1967 1985 1991 1995 1996 1997 1999 2000 2004 90,523.23 872.82 79.40 4,191.54 918.25 12,011.19 182,755.27 188,790.47 2,643.80 884,464.31 7,238.34 122,437.20 66,720.68 74,826 696 63 3,102 654 6,751 89,802 81,851 i,104 354,044 2,628 41,996 16,559 ALLOC. BOOK RESERVE (4 ) 3,275 232 547 7,538 519 771 8,144 19,128 5,867 32,452 1,919 6,195 3,647 1,389 1,892 3,500 5,996 1,033 239 138,487 53,934 502 45 2,236 471 4,866 64,728 58,997 796 255,190 1,894 30,270 11,936 111-329 FUTURE BOOK ACCRUALS (5) 2,754 215 537 8,073 592 937 11,483 28,094 9,417 64,362 4,334 15,051 9,592 3,994 5,999 12,391 27,873 5,714 6,450 235,057 41,116 415 38 2,165 493 7,746 127,165 139,233 1,980 673,497 5,706 98,289 58,121 REM. LIFE (6) 16.42 17.24 17.61 18.12 18.43 18.71 19.22 19.33 19.54 19.90 20.06 20.13 20.20 20.27 20.33 20.39 20.51 20.56 20.76 10.60 11.94 12.21 14.30 15.29 18.71 19.44 19.82 19.90 19.98 20.13 20.20 20.45 ANAL ACCRUAL (7) 168 12 30 446 32 50 597 1,453 482 3,234 216 748 475 197 295 608 1,359 278 311 12,634 3,879 35 3 151 32 414 6,541 7,025 99 33,709 283 4,866 2,842 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 371 of 4.91 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 50-R1.5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. - 5 2006 2007 2008 2009 2010 2011 8,560.25 136,271. 75 44,989.19 755,872.38 12,074.35 118,772.74 2,640,187.16 1,632 21,577 5,567 64,763 538 1,364 769,517 MILNER INTERIM SURVIVOR CURVE.. IOWA 50 -R1. 5 PROBABLE RETIREMENT YEAR.. 11 - 2 068 NET SALVAGE PERCENT.. -5 1992 1994 1996 1998 2000 2002 2003 2004 2005 2010 1,867,681.34 2,510.42 24,634.92 6,370.50 150,662.16 37,056.96 78,954.12 129,474.49 8,516.40 37,942.11 2,343,803.42 592,614 721 6,322 1,438 29,208 5,978 11,421 16,558 943 739 665,942 OXBOW INTERIM SURVIVOR CURVE.. IOWA 50 - R1 . 5 PROBABLE RETI REMENT YEAR.. 7 - 2045 NET SALVAGE PERCENT.. - 5 1961 1967 1968 1969 1970 1971 1973 589,096.72 740.08 1,031.33 5,075.86 6,922.01 4,228.58 989.25 422,916 490 673 3,263 4,382 2,634 596 ALLOC. BOOK RESERVE (4) 1,176 15,552 4,013 46,680 388 983 554,658 704,189 857 7,512 1,709 34,707 7,104 13,571 19,675 1,121 878 791,323 435,562 505 693 3,361 4,513 2,713 614 111-330 FUTURE BOOK ACCRUALS (5 ) 7,812 127,533 43,226 746,986 12,290 123,728 2,217,539 1,256,876 1,779 18,354 4,980 123,488 31,806 69,331 116,273 7,822 38,961 1,669,671 182,990 272 390 1,969 2,755 1,727 425 REM. LIFE (6) 20.56 20.61 20.66 20.71 20.76 20.79 34.43 35.68 36.91 38.10 39.26 40.38 40.93 41.46 41.98 44.42 15.76 18.27 18.70 19.12 19.54 19.96 20.79 ANAL ACCRUAL (7) 380 6,188 2,092 36,069 592 5,951 111,151 36,505 50 497 131 3,145 788 1,694 2,804 186 877 46,677 11,611 15 21 103 141 87 20 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 372 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) OXBOW INTERIM SURVIVOR CURVE.. IOWA 50 - R 1 . 5 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. - 5 1975 1977 1981 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1997 1999 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 39,777.98 21,918.23 4,704.64 858.98 8,739.14 59,964.87 63,819.43 9,307.10 2,537.02 67,153.11 6,125.53 63,537.44 36,254.75 108,972.20 1,632,141.27 84,612.92 59,605.99 8,517.90 35,834.81 34,837.41 9,022.35 311,857.31 584,538.95 2,518.65 36,723.23 38,116.63 3,940,081.67 23,146 12,292 2,432 404 4,006 26,759 27,679 3,916 1,034 26,490 2,332 23,291 12,768 36,742 499,472 23,061 12,984 1,686 6,348 5,411 1,197 33,924 49,052 144 1,084 283 1,272,891 SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 50 -RI. 5 PROBABLE RETIREMENT YEAR.. 5-2031 NET SALVAGE PERCENT.. -5 1919 1920 1921 1926 1927 1932 3,369.98 33.00 28,519.50 15.99 695.90 153.68 3,339 32 27,915 15 661 142 ALLOC. BOOK RESERVE (4) 23,838 12,660 2,505 416 4,126 27,559 28,507 4,033 1,065 27,282 2,402 23,987 13,150 37,841 514,407 23,751 13,372 1,736 6,538 5,573 1,233 34,938 50,519 148 1,116 291 1,310,952 3,148 30 26,320 14 623 134 111-331 FUTURE BOOK ACCRUALS (5 ) 17,929 10,355 2,435 486 5,050 35,404 38,504 5,739 1,599 43,229 4,030 42,727 24,918 76,580 1,199,342 65,093 49,214 7,207 31,089 31,006 8,241 292,512 563,247 2,496 37,443 39,731 2,826,134 390 4 3,626 3 107 27 REM. LIFE (6) 21.61 22.40 23.92 25.31 25.64 25.95 26.26 26.56 26.85 27.12 27.39 27.65 27.90 28.14 28.59 29.01 29.57 29.74 29.91 30.07 30.22 30.37 30.51 30.65 30.78 30.87 2.82 3.12 3.39 4.54 4.77 6.01 ANAL ACCRUAL (7) 830 462 102 19 197 1,364 1,466 216 60 1,594 147 1,545 893 2,721 41,950 2,244 1,664 242 1,039 1,031 273 9,632 18,461 81 1,216 1,287 102,734 138 1 1,070 1 22 4 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 373 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR.. 5-2031 NET SALVAGE PERCENT.. - 5 1934 1936 1938 1941 1942 1944 1948 1950 1951 1956 1958 1962 1963 1964 1965 1966 1968 1969 1982 1986 1987 1989 1991 1992 1995 1998 2000 2006 2008 2.84 1,275.68 43.74 222.15 266.92 33.50 656.71 201.75 893.87 166.14 1,756.06 904.49 180.92 15,070.74 13,605.53 1,161.68 2,361.38 266.00 80,533.96 28,945.10 50,082.46 6,606.08 8,985.91 167.92 3,812.76 28,023.27 6,936.46 71,850.31 1,283,405.89 1,641,208.27 3 1,151 39 194 232 29 550 167 734 132 1,374 686 136 11,249 10,071 853 1,702 190 49,406 16,614 28,197 3,569 4,629 84 1,743 11,358 2,530 14,786 172,180 366,692 STRIKE INTERIM SURVIVOR CURVE.. IOWA 50 -Rl. 5 PROBABLE RETIREMENT YEAR.. 3 - 2 032 NET SALVAGE PERCENT.. - 5 1952 1954 1955 204,086.49 5,884.50 1,610.69 165,870 4,716 1,282 ALLOC. BOOK RESERVE (4 ) 3 1, 085 37 183 219 27 519 157 692 124 1,295 647 128 10,606 9,495 804 1,605 179 46,582 15,665 26,586 3,365 4,364 79 1,643 10,709 2,385 13,941 162,340 345,736 lS3,568 4,366 1,187 ~i-332 FUTUE BOOK ACCRUALS (5) 254 9 50 62 8 171 54 247 50 548 303 62 5,218 4,790 416 875 100 37,978 14,728 26,001 3,571 5,071 97 2,360 18,716 4,898 61,502 1,185,236 1,377,533 60,723 1,813 504 REM. LIFE (6) 7.05 7.56 8.33 8.59 9.09 10.08 10.57 10.81 12.00 12.47 13.38 13 .61 13.83 14.04 14.25 14.66 14.86 16.97 17.44 17.55 17.74 17.92 18.00 18.23 18.42 18.54 18.83 18.91 11. 21 11.71 11.96 ANAL ACCRUAL (7) 36 1 6 7 1 17 5 23 4 44 23 5 377 341 29 60 7 2,238 844 1,482 201 283 5 129 1,016 264 3,266 62,678 74,628 5,417 155 42 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 374 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) STRIKE INTERIM SURVIVOR CURVE.. IOWA 50-Rl. 5 PROBABLE RETIREMENT YEAR.. 3 -2032 NET SALVAGE PERCENT.. -5 1959 1960 1965 1966 1968 1969 1972 1973 1975 1982 1985 1986 1991 1992 1993 1994 1996 1998 1999 2000 2001 2004 2006 2008 2010 2011 137.67 250.36 2,834.41 1,639.46 2,573.05 245.69 791.85 9,710.59 14,028.86 29,125.09 4,047.71 9,888.20 61,978.28 4,075.99 7,679.08 7,937.33 682.27 1,367,680.48 6,811.08 16,044.44 195,173.38 12,035.44 38,066.82 21,376.19 146,721.75 70,350.43 2,243,467.58 106 192 2,081 Ii 193 1,838 174 543 6,591 9,307 17 ,592 2,326 5,578 31,292 2 i 003 3 i 665 3 i 672 294 540,693 2,562 5 i 701 65,146 3,113 7,587 2,774 6,863 850 895,604 98 178 1,927 Ii ios 1,702 161 503 6,102 8,617 16,287 2 i 153 5,164 28,971 1,854 3,393 3,400 272 500,590 2,372 5,278 60,314 2,882 7,024 2,568 6,354 787 829,178 SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 50 - Rl . 5 PROBABLE RETIREMENT YEAR.. 6-2042 NET SALVAGE PERCENT.. -5 1994 1995 1997 2000 2001 2,828,774.31 12.14 107.76 107,582.81 169,283.32 1,048,040 4 35 29,205 42,754 1,124,963 4 38 31,349 45,892 ~i-333 FUTRE BOOK ACCRUALS (5) 46 85 1,049 617 1,000 97 329 4,094 6,114 14,294 2,097 5,218 36,106 2,425 4,670 4,935 444 935,474 4,780 11,568 144,618 9,755 32,946 19,877 147,704 73,081 1,526,463 1,845,250 8 76 81,613 131,855 REM. LIFE (6) 12.95 13.19 14 .37 14.60 15.03 15.25 15.86 16.05 16.42 17.53 17.92 18.04 18.56 18.65 18.74 18.82 IB.97 19.11 19.17 19.24 19.29 19.46 19.55 19.64 19.73 19.76 26.08 26.27 26.64 27.13 27.28 ANAL ACCRUAL (7) 4 6 73 42 67 6 21 255 372 S15 117 289 1,945 130 249 262 23 48,952 249 601 7,497soi 1,685 1,012 7,486 3,698 81,971 70,753 3 3,008 4,833 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 375 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) FURE BOOK ACCRUALS (5 ) REM. LIFE (6) ANAL ACCRUAL (7 ) SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 042 NET SALVAGE PERCENT.. -5 2006 4,881.81 699 750 2010 21,568.45 696 747 2011 4,243.44 36 39 3,136,454.04 1,121,469 1,203,782 4,376 21,900 4,417 27.94 28.38 28.45 157 772 155 2,089,495 79,681 TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 50-Rl. 5 PROBABLE RETIREMENT YEAR.. 12 - 2 04 0 NET SALVAGE PERCENT.. - 5 1938 10,255.89 9,117 6,106 4,662 7.67 608 1942 52.34 45 30 25 8.86 3 1950 30.52 25 17 15 11.42 1 1964 2,294.73 1,608 1,077 1,332 16.41 8119721,711.80 1,078 722 1,075 19.28 56 1986 1,767.00 858 575 1,281 23.45 55 1995 1,910.81 699 468 1,538 25.30 611996469,592.74 164,400 110,111 382,961 25.47 15,036200216,447.71 3,971 2,660 14,610 26.32 555 2005 34,458.67 5,996 4,016 32,166 26.68 1,206 538,522.21 187,797 125,782 439,666 17,662 TWIN FALLS (NEW) INTERIM SURVIVOR CURVE. .IOWA 50-R1.5 PROBABLE RETIREMENT YEAR. .12 -2040 NET SALVAGE PERCENT. .-5 1995 2,060,802.98 753,969 778,357 1,385,486 25.30 54,762 2000 16,500.43 4,636 4,786 12,539 26.06 481 2001 26,885.97 7,031 7,258 20,972 26.20 800 2002 73,135.34 17,659 18,230 58,562 26.32 2,225 2004 44,849.03 8,877 9,164 37,927 26.56 1,428 2006 18,497.56 2,762 2,851 16,571 26.78 6192007104,160.50 12,786 13,200 96,169 26.89 3,576 2,344,831.81 807 ,720 833,847 1,628,226 63,891 ~i-334 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 376 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) THOUSAN SPRINGS INTERIM SURVIVOR CURVE.. IOWA 50 - R1 . 5 PROBABLE RETIREMENT YEAR.. 6-2019 NET SALVAGE PERCENT.. - 5 1919 1920 1921 1922 1923 1927 1928 1930 1936 1938 1940 1941 1945 1946 1948 1950 1951 1954 1955 1956 1958 1959 1964 1969 1970 1972 1978 1982 1983 1985 1986 1987 1998 2000 2001 2002 1,199.66 56.06 10,388.12 479.85 28.90 525.05 1,407.78 265.53 86.70 77.77 581. 40 101.83 302.13 575.73 83.02 98.46 339.09 31.26 519.86 172.79 4,708.38 441.22 10,317.82 199.50 103.40 169.48 2,524.34 345.18 120,184.12 126,605.79 1,222.01 5,304.82 202,047.88 16,328.22 108,430.85 129,484.08 1,189 55 10,179 468 28 505 1,350 253 81 73 541 95 279 530 76 90 309 28 469 156 4,220 394 9,094 173 89 145 2,097 279 96,547 100,004 957 4,111 129,477 9,783 62,395 71,011 ALLOC. BOOK RESERVE (4) 1,260 59 10,908 504 30 551 1,478 279 91 82 610 107 317 605 87 103 356 33 546 181 4,944 463 10,834 209 109 178 2,627 350 120,951 125,281 1,199 5,150 162,204 12,256 78,166 88,960 ~i-335 FUTUE BOOK ACCRUALS (5) 24 13 5,243 7,655 84 420 49,946 4,889 35,686 46,998 REM. LIFE (6 ) 7.50 7.59 7.60 7.64 7.65 7.67 7.79 7.81 7.81 7.82 ANAL ACCRUAL (7) 3 2 690 1,002 11 55 6,412 626 4,569 6,010 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, fPC Page 377 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) THOUSAN SPRINGS INTERIM SURVIVOR CURVE.. IOWA 50 - Rl . 5 PROBABLE RETIREMENT YEAR.. 6-2019 NET SALVAGE PERCENT.. - 5 2006 2007 2009 6,425.60 31,519.29 1,339.75 785,022.72 2,560 10,909 277 521,276 UPPER MALAD INTERIM SURVIVOR CURVE.. IOWA 50 -Rl. 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -5 1948 1968 1976 1986 1996 1998 2000 2001 2004 2008 2009 3,780.14 524.39 6,571.46 189,264.69 78,591.54 1,250.67 8,550.57 4,750.28 99,353.41 210,471.50 815.29 603,923.94 3,147 370 4,237 104,322 32,804 478 2,933 1,527 24,658 26,044 70 200,590 UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 50 - Rl . 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. -5 1937 1941 1944 1946 1947 1948 1951 1955 1960 22,601. 63 12,938.70 941.02 8,844.57 283.63 4,252.82 21,265.89 23.62 694.31 20,243 11,291 805 7,465 238 3,540 17,328 19 527 ALLOC. BOOK RESERVE (4) 3,207 13,666 347 649,288 2,377 279 3,201 78,804 24,780 361 2,216 1,153 18,627 19,674 53 151,525 15,669 8,740 623 5,778 184 2,740 13,413 15 408 111-336 FUTURE BOOK ACCRUALS (5) 3,540 19,429 1,060 174,986 1,592 271 3,699 119,923 57,741 952 6,763 3,834 85,695 201,322 803 482,595 8,062 4,846 365 3,508 114 1,725 8,916 10 321 REM. LIFE (6 ) 7.85 7.85 7.87 10.33 15.52 17.24 18.85 19.90 20.06 20.20 20.27 20.45 20.66 20.71 7.35 8.44 9.25 9.79 10.06 10.33 11.14 12.21 13 .53 ANAL ACCRUAL (7) 451 2,475 135 22,441 154 17 215 6,362 2,902 47 335 189 4,190 9,745 39 24,195 1,097 574 39 358 11 167 800 1 24 Exhibit NO.1 Case No. IPC-E-12.Q8 J. Spanos, IPC Page 378 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 334. 00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 50-Rl. 5 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. - 5 1968 1970 1980 1981 1983 1984 1985 1988 1989 1991 1997 2000 2002 2006 2008 2009 2011 25,217.19 3,288.52 5,572.74 1,571.16 263.26 2,386.81 4,413.31 10,032.07 6,073.70 67,121. 68 866,664.34 9,452.89 7,669.17 11,048.70 34,187.61 60,103.14 15,293.53 1,202,206.01 17,797 2,273 3,403 945 153 1,366 2,480 5,304 3,138 32,982 346,918 3,242 2,290 2,106 4,230 5,150 176 495,409 UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 50 - R1 . 5 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. - 5 1947 1949 1961 1971 1982 1985 1987 1991 1998 2000 33,198.91 2,778.90 1,377.70 35,294.72 8,196.71 4,620.97 2,154.72 53,036.08 660,142.52 10,703.28 27,830 2,297 1,038 24,135 4,851 2,597 1,164 26,061 252,293 3,671 ALLOC. BOOK RESERVE (4) 13,776 1,759 2,634 731 118 1,057 1,920 4,106 2,429 25,530 268,535 2,510 1,773 1,630 3,274 3,986 136 383,476 10,901 900 407 9,454 1,900 1,017 456 10,208 98,824 1,438 ~i-337 FUTURE BOOK ACCRUALS (5) 12,702 1,694 3,217 918 158 1,449 2,714 6,428 3,948 44,948 641,462 7,416 6,280 9,971 32,623 59,122 15,922 878,840 23,958 2,018 1,040 27,606 6,706 3,835 1,807 45,480 594,326 9,801 REM. LIFE (6) 15.52 15.98 17.95 18.12 18.43 18.57 18.71 19.10 19.22 19.44 19.98 20.20 20.33 20.56 20.66 20.71 20.79 10.06 10.60 13.78 16.21 18.28 18.71 18.98 19.44 20.06 20.20 ANAL ACCRUAL (7 ) 818 106 179 51 9 78 145 337 205 2,312 32, ios 367 309 485 1,579 2,855 766 45,777 2,382 190 75 1,703 367 205 95 2,340 29,627 485 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos. IPC Page 379 of 491 IDAHO POWER COMPANY ACCOUNT 334.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 YEAR (l ) ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6 ) ANAL ACCRUAL (7) UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 50-R1. 5 PROBABLE RETIREMENT YEAR. . 5 - 2 033 NET SALVAGE PERCENT.. - 5 2004 10,200.88 2,532 992 2006 90,993.75 i 7,344 6,794 2008 30,643.37 3,792 1,485 943,342.51 369,605 144,775 45,108,045.10 15,094,824 14,689,513 9,719 88,750 30,690 20.45 20.56 20.66 475 4,317 1,485 845,735 43,746 32,673,936 1,339,960 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 24.4 2.97 Exhibit NO.1 Case No. IPC-E-12-08~i-338 J. Spanos, IPC Pag 380 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) HAGERMA MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6-2028 NET SALVAGE PERCENT.. 0 1947 1950 1953 1956 1957 1960 1970 1972 1973 1976 1977 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 1,223.68 569.77 1,459.50 1,114.92 760.89 1,106.24 560.68 4,239.78 466.35 463.35 2,928.07 7,627.57 3,903.95 10,495.09 65,238.50 50,080.86 13,735.50 26,500.63 8,219.96 7,981.50 4,854.88 7,460.93 15,795.00 73,435.84 3,479.56 72,523.97 29,281. 83 8,646.19 39,741.38 221,606.87 3,875.82 909.89 41,758.19 51,860.70 27,608.98 25,155.93 82,560.76 51,464.43 100,870.95 957 441 1,118 843 573 822 393 2,927 319 309 1,935 4,939 2,500 6,643 40,794 30,914 8,359 15,897 4,855 4,636 2,769 4,176 8,662 39,395 . 1,823 37,028 14,535 4,162 18,498 99,362 1,592 355 15,364 17,828 8,772 7,285 21,387 11,626 19,084 ALLOC. BOOK RESERVE (4 ) 655 302 766 577 392 563 269 2,005 218 212 1,325 3,383 1,712 4,550 27,942 21,174 5,725 10,889 3,325 3,175 1,897 2,860 5,933 26,984 1,249 25,362 9,956 2,851 12,670 68,058 1,090 243 10,524 12,211 6,008 4,990 14,649 7,963 13,072 ~i-339 FUTURE BOOK ACCRUALS (5 ) 568 268 694 538 368 543 291 2,235 248 252 1,603 4 ;245 2,192 5,945 37,297 28,906 8,010 15,612 4,895 4,806 2,958 4,601 9,862 46,452 2,231 47,162 19,326 5,795 27,071 153,549 2 ;785 667 31,235 39,649 21,601 20,166 67,912 43,501 87,799 REM. LIFE (6) 15.73 15.84 15.93 16.02 16.05 16.13 16.35 16.39 16.41 16.46 16.48 16.51 16.52 16.54 16.55 16.56 16.58 16.59 16.60 16.61 16.63 16.64 16.65 16.66 16.67 16.68 16.69 16.70 16.71 16.72 16.74 16.75 16.75 16.76 16.77 16.78 16.79 16.79 16.80 ANAL ACCRUAL (7 ) 36 17 44 34 23 34 18 136 15 15 97 257 133 359 2,254 1,746 483 941 295 289 178 277 592 2,788 134 2,827 1,158 347 1,620 9,184 166 40 1,865 2,366 1,288 1,202 4,045 2,591 5,226 Exhibit No. 1 Case No. IPC-E-12-08 J. Spano, IPC Page 381 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) HAGERMA MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6 - 2 02 8 NET SALVAGE PERCENT.. 0 2008 2010 2011 279,378.51 91,274.17 69,038.65 41,588 5,026 1,011 1,511,260.22 511,502 MILNER DAM INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6-2067 NET SALVAGE PERCENT.. 0 1992 1997 1999 26,686.60 12,783.88 8,755.88 6,846 2,581 1,558 48,226.36 10,985 NIAGAR SPRINGS HATCHERY INTERIM SURVIVOR CURVE,. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. 0 1984 1986 1988 1992 1994 1995 1996 1999 2002 2004 2005 414.03 1,227.11 6,710.28 4,772.08 10,030.60 12,972.11 521.28 2,756.39 4,182.62 13,817.59 17,144.56 182 517 2,689 1,699 3,321 4,121 158 714 870 2,340 2,551 74,548.65 19,162 ALLOC. BOOK RESERVE (4) 28,486 3,443 692 350,352 7,689 2,899 1,750 12,337 215 612 3,182 2,011 3,930 4,877 187 845 1,030 2,769 3,019 22,678 ~i-340 FUTE BOOK ACCRUALS (5) 250,893 87,832 68,346 1,160,908 18,998 9,885 7,006 35,889 199 615 3,528 2,761 6,100 8,095 334 1,911 3,153 11,048 14,125 51,871 REM. LIFE (6) 16.81 16.82 16.82 50.57 51. 30 51. 57 31.99 32.11 32.22 32.42 32.51 32.56 32.60 32.73 32.84 32.92 32.95 ANAL ACCRUAL (7) 14,925 5,222 4,063 69,330 376 193 136 705 6 19 109 85 188 249 10 58 96 336 429 1,585 Exhibit NO.1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 382 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) HELLS CANYON MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1956 1961 1966 1967 1974 1976 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 7,954.79 562.61 205.20 2,172.34 15,762.12 1,492.09 360.59 1,673.75 573.69 835.00 12,378.34 6,010.66 1,178.19 8,644.95 68,778.69 13,695.82 4,288.70 45,009.51 29,990.05 21,747.28 4,767.95 20,886.79 50,250.63 11,736.83 47,783.76 46,538.00 36,516.44 7,199.01 134,254.07 20,493.33 42,746.53 14,531.78 23,326.89 26,637.35 24,135.44 30,747.31 28,796.66 4,914 334 116 1,220 8,164 752 176 806 272 389 5,657 2,694 518 3,718 28,914 5,625 1,717 17,540 11,360 7,990 1,696 7,170 16,602 3,725 14,495 13,457 10,015 1,862 32,526 4,616 8,862 2,740 3,948 3,955 3,065 3,212 2,310 ALLOC. BOOK RESERVE (4) 3,428 233 81 851 5,695 525 123 562 190 271 3,946 1,879 361 2,593 20,168 3,924 1,198 12,234 7,924 5,573 1,183 5,001 11,580 2,59B10,lii 9,387 6,986 1,299 22,687 3,220 6,181 1,911 2,754 2,759 2, DB 2,240 1,611 ~i-341 FUTURE BOOK ACCRUALS (5) 4,527 330 124 1,321 10,068 968 238 1,112 384 564 8,432 4,132 817 6,052 48,611 9,772 3,091 32,775 22,066 16,174 3,585 15,886 38,670 9,139 37,673 37,151 29,531 5,900 111,567 17,274 36,565 12,621 20,573 23,879 21,998 28,507 27,185 REM. LIFE (6 ) 29.59 30.17 30.68 30.78 31. 38 31. 53 31. 67 31.74 31.81 31.87 31.94 32.00 32.06 32.12 32.18 32.23 32.29 32.34 32.39 32.44 32.49 32.54 32.59 32.63 32.68 32.72 32.76 32.80 32.84 32.88 32.92 32.96 32.99 33.03 33.06 33.09 33.13 ANAL ACCRUAL (7) 153 11 4 43 321 31 8 35 12 18 264 129 25 188 1,511 303 96 1,013 681 499 110 488 1,187 280 1,153 1,135 901 180 3,397 525 1,111 383 624 723 665 861 821 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos. IPC Page 383 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLA EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) HELLS CANYON MAINTENANCE SHOP INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. 0 2009 2010 2011 8,790.13 105,258.74 67,640.66 483 2,959 485 996,352.67 241,059 RAPID RIVER HATCHERY INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. 0 1964 1974 1976 1978 1981 1984 1988 1992 1995 2002 2011 3,389.02 900.12 1,013.39 791.78 2,267.08 3,003.57 697.56 11,318.42 1,303.15 2,918.57 16,657.89 1,962 467 511 388 1,057 1,321 280 4,029 414 607 120 44,260.55 11,156 AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 2-2055 NET SALVAGE PERCENT.. 0 1919 1924 1925 1943 1950 1957 1958 1968 1969 629.23 66.82 30.84 274.80 942.06 549.70 581.37 829.66 279.65 459 47 22 173 563 309 324 415 138 ALLOC. BOOK RESERVE (4) 337 2,064 338 168,143 1,068 254 278 211 575 719 152 2,193 225 330 65 6,073 480 49 23 181 589 323 339 434 144 ~i-342 FUTE BOOK ACCRUALS (5) 8,453 103,195 67,302 828,210 2,321 646 735 581 Ii 692 2,284 545 9,125 1,078 2,588 16,593 38,188 REM. LIFE (6) 33.16 33.19 33.21 30.42 31.31 31.46 31.60 31.80 31.99 32.22 32.42 32.56 32.84 33.13 149 25.41 18 27.06 8 27.38 94 32.71 353 34.4522735.97 243 36.17 396 37.93 135 38.09 ANAL ACCRUAL (7) 255 3,109 2,027 25,280 76 21 23 18 53 71 17 281 33 79 501 1,173 6 1 3 10 6 7 10 4 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 384 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 2 - 2 055 NET SALVAGE PERCENT.. 0 1971 1978 1979 1980 1982 1984 1989 1993 1994 1995 1996 1997 1999 2004 2005 2007 2008 2009 2011 306.12 1,336,376.17 8,976.64 990.18 321.36 1,739.2B 813.58 14,687.31 31,541.83 185,881.49 2,985.64 51,432.19 10,368.55 34,352.32 112,265.70 6,954.05 13 7,162.78 1,799.88 795.18 1,943,934.38 147 577,061 3,807 412 128 665 272 4,279 8,823 49,747 761 12,449 2,230 4,729 13 ,516 582 8,765 78 5 690,906 BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1960 1961 1962 1969 1972 1973 1974 1975 1976 1977 1980 1982 1984 461,258.75 399.49 630.08 4,979.10 303.29 2,049.52 295.15 46.79 5,995.16 549.65 2,382,472.45 1,151.47 559.04 276,216 237 371 2,739 161 1,075 153 24 3,022 273 1,128,363 526 246 ALLOC. BOOK RESERVE (4) 154 603,348 3,980 431 134 695 284 4,474 9,225 52,013 796 13,016 2,332 4,944 14,132 609 9,164 82 5 722,379 410,086 352 551 4,066 239 1,596 227 36 4,487 405 1,675,234 781 365 ~i-343 FUTURE BOOK ACCRUALS (5) 152 733,028 4,996 559 188 1,044 529 10,213 22,317 133,868 2,190 38,416 8,037 29,408 98,134 6,346 127,999 1,718 790 1,221,555 51,112 48 79 913 64 454 68 11 1,509 144 707,239 371 194 REM. LIFE (6) 38.39 39.33 39.45 39.57 39.79 40.01 40.51 40.86 40.94 41.02 41.10 41.18 41.32 41.66 41.72 41.84 41.90 41.96 42.05 30.06 30.17 30.28 30.96 31.22 31. 30 31.3.8 31. 45 31.53 31.60 31.81 31.94 32.06 ANAL ACCRUAL (7) 4 18,638 127 14 5 26 13 250 545 3,263 53 933 195 706 2,352 152 3,055 41 19 30,438 1,702 2 3 29 2 15 2 48 5 22,233 12 6 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 385 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR., 7-2045 NET SALVAGE PERCENT.. 0 1985 1986 1988 1990 1991 1992 1993 1994 1995 1996 1997 2000 2002 2004 2005 2006 2007 2008 2010 2011 8,469.77 15,921.79 6,229.64 4,260.94 112,746.57 14,234.34 36,219.50 2,217.19 8,059.59 15,086.02 2,550.54 7,334.02 7,090.00 68,378.65 22,149.50 1,048.95 143,356.58 378,340.86 499,948.21 56,849.39 4,271,181.99 3,643 6,693 2,493 1,614 41,422 5,062 12,434 733 2,558 4,576 738 1,777 1,470 11,572 3,289 133 14,976 30,354 14,054 408 1,573,405 BLISS INTER 1M SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1950 1952 1957 1964 1973 1982 1986 1987 1989 1991 1992 1993 198,583.86 299.87 179.69 1,331.17 2,344.69 4,260.33 2,574.63 7,291.20 1,610.13 2,653.41 16,018.96 9,807.48 144,805 217 127 899 1,473 2,405 1,360 3,779 800 1,256 7,378 4,386 ALLOC. BOOK RESERVE (4) 5,409 9,937 3,701 2,396 61,498 7,515 18,460 1, 088 3,798 6,794 1,096 2,638 2,182 17,180 4,883 197 22,234 45,065 20,865 606 2,335,969 133,511 200 117 829 1,358 2,217 1,254 3,484 738 1,158 6,803 4,044 ~i-344 FUTE BOOK ACCRUALS (5) 3,061 5,985 2,528 1,865 51,249 6,719 17,759 1,129 4,262 8,292 1,455 4,696 4,908 51,198 17,266 851 121,122 333,276 479,083 56,244 1,935,213 65,073 100 63 502 987 2,043 1,321 3,807 873 1,495 9,216 5,764 REM. LIFE (6) 32.12 32.18 32.29 32.39 32.44 32.49 32.54 32.59 32.63 32.68 32.72 32.84 32.92 32.99 33.03 33.06 33.09 33.13 33.19 33.21 19.91 20.02 20.28 20.58 20.89 21.13 21. 22 21. 24 21. 28 21. 32 21.34 21.36 ANAL ACCRUAL (7 ) 95 186 78 58 1,580 207 546 35 131 254 44 143 149 1,552 523 26 3,660 10,060 14,435 1,694 59,515 3,268 5 3 24 47 97 62 179 41 70 432 270 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 386 of 491 YEAR (i) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) BLISS INTERIM SURVIVOR CURVE.. IOWA 95 -R2 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1994 1997 1999 2000 2005 2006 2007 2,251.08 5,686.88 7,063.06 14,875.79 224,829.62 54,241.21 224,026.20 779,929.26 975 2,200 2,478 4,932 47,954 9,998 34,316 271,738 CASCADE INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. 0 1983 1984 1988 1989 1990 1991 1992 1993 1994 1996 1997 1999 2005 2007 2009 994,971.42 1,752.01 957.972,089.69 7,518.95 1,755.72 12,362.47 23,379.43 2,753.07 1,937.17 12,349.11 9,373.60 27,939.21 12,583.15 871.10 1, 112, 594 . 07 362,130 623 305 646 2,248 507 3,439 6,252 705 451 2,725 1,829 3,019 938 34 385,851 ALLOC. BOOK RESERVE (4) 899 2,028 2,285 4,547 44,214 9,218 31,640 250,544 408,277 702 344 728 2,534 572 3,877 7,049 795 508 3,072 2,062 3,404 1,058 38 435,021 ~i-345 FUTE BOOK ACCRUALS (5) 1,352 3,658 4,778 10,328 180,616 45,023 192,387 529,385 586,694 1,050 614 1,361 4,984 1,184 B,485 16,331 1,958 1,429 9,277 7,312 24,535 11,526 833 677,573 REM. LIFE (6) 21. 38 21.42 21.46 21.47 21. 54 21. 55 21.56 44.44 44.58 45.12 45.25 45.37 45.49 45.61 45.72 45.83 46.05 46.15 46.35 46.89 47.06 47.21 ANAL ACCRUAL (7) 63 171 223 481 8,385 2,089 8,923 24,833 13,202 24 14 30 110 26 186 357 43 31 201 158 523 245 18 15,168 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 387 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 6 - 2 017 NET SALVAGE PERCENT.. 0 1937 1957 1973 1983 1984 1988 1992 2005 2010 160.43 42.21 721. 19 20.00 466.85 830.29 6,456.56 12,445.00 3,362.63 24,505.16 147 38 620 16 381 656 4,891 6,202 478 13,429 HELLS CANON INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1952 1967 1974 1980 1981 1988 1989 1990 1991 1993 1995 1996 2005 2009 2010 2011 113.72 609,727.76 455.15 9,007.35 31,549.20 16,821. 11 6,848.83 3,805.31 4,153.45 5,050.80 2,383.38 13,362.97 24,985.14 30,201.03 17,581.74 3,795.00 779,841.94 72 342,502 236 4,266 14,687 6,733 2,669 1,441 1,526 1,734 756 4,054 3,710 1,661 494 27 386,568 ALLOC. BOOK RESERVE (4) 82 21 345 9 212 365 2,720 3,449 266 7,469 64 305,507 211 3,805 13,101 6,006 2,381 1,285 1,361 1,547 674 3,616 3,309 1,482 441 24 344,813 ~i-346 FURE BOOK ACCRUALS (5 ) 79 21 376 11 255 465 3,736 8,996 3,097 17,036 49 304,221 245 5,202 18,449 10,815 4,468 2,520 2,792 3,504 1,709 9,747 21,676 28,719 17,141 3,771 435,029 REM. LIFE (6) 5.80 5.89 5.93 5.95 5.95 5.96 5.96 5.98 5.98 29.07 30.78 31. 38 31. 81 31. 87 32.29 32.34 32.39 32.44 32.54 32.63 32.68 33.03 33.16 33.19 33.21 ANAL ACCRUAL (7) 14 4 63 2 43 78 627 1,504 518 2,853 2 9,884 8 164 579 335 138 78 86 108 52 298 656 866 516 114 13,884 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 38B of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) LOWER MAAD INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. 0 1948 1988 1992 2003 2007 2008 2009 2011 64,485.57 422.22 4,279.05 10,942.26 34,038.63 160,991.48 70,216.30 3,777.15 349,152.66 47,431 214 1,971 2,904 5,214 19,187 5,817 41 82,779 LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 95 -R2 PROBABLE RETIREMENT YEAR.. 5 - 2 0 3 3 NET SALVAGE PERCENT.. 0 1949 1957 1962 1963 1966 1978 1979 1981 1983 1988 1989 1990 1996 1997 1999 2003 2005 2006 2007 2009 2010 2011 167,047.82 1,095.71 242.42 401. 54 914.43 500.95 2,108.34 16,166.12 1,331.09 669.89 18,544.40 8,252.25 2,011.04 5,950.33 7,038.38 11,739.05 14,685.70 5,992.85 302.89 209,287.15 1,8B4.82 4,861.13 481,028.30 122,347 772 166 273 609 298 1,240 9,258 740 340 9,213 4,004 810 2,301 2,470 3,115 3,132 1/105 46 17,337 82 53 179/711 ALLOC. BOOK RESERVE (4 ) 36,288 164 1,508 2,222 3,989 14,679 4,450 31 63,331 116,570 736 158 260 580 284 1,181 8,821 705 324 8,778 3,815 772 2,192 2,353 2,968 2,984 1,053 44 16,518 78 50 171,225 ~i-347 FUTURE BOOK ACCRUALS (5) 28,198 258 2,771 8,721 30,050 146,312 65,766 3,746 285,822 50,478 360 84 141 334 217 927 7,345 626 346 9,766 4,437 1,239 3,758 4,685 8,771 11,702 4,940 259 192,769 1,807 4,811 309,803 REM. LIFE (6) 19.79 21. 26 21.34 21.51 21.56 21.58 21. 59 21.61 19.85 20.28 20.50 20.54 20.65 21.03 21.06 21.11 21.15 21.26 21. 28 21. 30 21. 41 21. 42 21.46 21.51 21.54 21.55 21.56 21.59 21.60 21.61 ANAL ACCRUAL (7) 1,425 12 130 405 1,394 6,780 3,046 173 13,365 2,543 18 4 7 16 10 44 348 30 16 459 208 58 175 218 408 543 229 12 8,929 84 223 14,582 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 389 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) MILNER INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETI REMENT YEAR.. 11 - 2068 NET SALVAGE PERCENT.. 0 1992 1993 1994 1995 1996 1997 1998 2000 2005 2009 525,127.39 2,720.36 15,667.14 14,057.66 18,104.27 8,103.30 6,583.35 7,038.38 33,534.92 29,006.27 659,943.04 132,500 659 3,628 3,102 3,796 1,607 1,229 1,143 3,195 982 151,841 OXBOW HATCHERY INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1988 1992 1996 2002 2011 572.70 4,934.87 7,360.10 2,557.31 2,361.91 17,786.89 229 1,755 2,233 530 17 4,764 OXBOW INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. 0 1931 1946 1961 1962 1963 1966 1967 70.14 207.87 323,707.10 2,031.37 448.00 108.00 1,626.16 50 137 192,246 1,196 261 61 913 ALLOC. BOOK RESERVE (4) 132,160 657 3,619 3,094 3,786 1,603 1,226 1,140 3,187 979 151,451 102 784 998 237 8 2,129 39 106 148,670 925 202 47 706 ~i-348 FUTURE BOOK ACCRUALS (5) 392,968 2,063 12,048 10,964 14,318 6,500 5,358 5,898 30,348 28,027 508,492 470 4,151 6,362 2,320 2,354 15,658 31 102 175,037 1,106 246 61 920 REM. LIFE (6) 51.62 51.78 51.94 52.10 52.25 52.40 52.54 52.82 53.46 53.91 32.29 32.49 32.68 32.92 33.21 25.48 28.20 30.17 30.28 30.38 30.68 30.78 ANAL ACCRUAL (7) 7,613 40 232 210 274 124 102 112 568 520 9,795 15 128 195 70 71 479 1 4 5,802 37 8 2 30 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 390 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) OXBOW INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1968 1969 1971 1972 1973 1976 1977 1978 1980 1981 1983 1984 1985 1986 1988 1989 1990 1991 1993 1994 1995 1996 1997 1998 2000 2001 2003 2006 2007 2009 2010 106.56 1,065.75 471.03 98.57 864.69 1,470.14 166.90 6,603.51 2,033.77 5,040.87 5,158.41 3,969.69 794.12 12,256.65 9,384.26 20,358.47 9,203.62 1,129.36 173.43 6,728.09 13,834.18 224,376.14 46,667.53 7,422.57 3,090.06 53,609.82 16,633.37 1,571.02 60,860.40 25,357.07 9,345.05 878,043.74 59 586 253 52 454 741 83 3,231 963 2,347 2,312 1,744 342 5,153 3,756 7,934 3,486 415 60 2,223 4,390 68,065 13,494 2,036 749 12,076 3,137 200 6,358 1,395 263 343,221 ALLOC. BOOK RESERVE (4) 46 453 196 40 351 573 64 2,499 745 1,815 1,788 1,349 264 3,985 2,905 6,136 2,696 321 46 1,719 3,395 52,637 10,435 1,575 579 9,339 2,426 155 4,917 1,079 203 265,424 111-349 FUTUE BOOK ACCRUALS (5 ) 61 613 275 58 514 897 103 4, ios 1,289 3,226 3,370 2,621 530 8,272 6,480 14,223 6,508 808 127 5,009 10,439 171,739 36,232 5,848 2,511 44,271 14,207 1,416 55,944 24,278 9,142 612,620 REM. LIFE (6) 30.87 30.96 31.13 31. 22 31. 30 31.53 31. 60 31.67 31. 81 31.87 32.00 32.06 32.12 32.18 32.29 32.34 32.39 32.44 32.54 32.59 32.63 32.68 32.72 32.76 32.84 32.88 32.96 33.06 33.09 33.16 33.19 ANAL ACCRUAL (7 ) 2 20 9 2 16 28 3 130 41 101 105 82 17 257 201 440 201 25 4 154 320 5,255 1,107 179 76 1,346 431 43 I,691 732 275 19, I77 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 391 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULTED ACCRUED (3 ) PAHSIMEROI ACCUMULATING PONDS INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. 0 1978 1984 1999 2002 2011 66.23 162.12 7,785.98 2,803.99 19,024.13 32 71 2,017 583 137 29,842.45 2,840 PAHSIMEROI TRAPPING INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. 0 1951 1978 1984 1987 1988 1991 1992 1995 1996 484.49 445.47 494.41 1,269.56 3,852.07 1,553.48 748.14 1,427.25 1,315.31 310 218 217 522 1,544 572 266 453 400 11,590.18 4,502 SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 5-2031 NET SALVAGE PERCENT.. 0 1921 1924 1925 1926 1928 1930 1945 1957 1964 23,246.46 199.24 164.66 43.70 109.48 65.57 110.59 241.65 1,149.34 18/927 161 133 35 88 52 84 175 800 ALLOC. BOOK RESERVE (4 ) 15 34 959 277 65 1,351 64 45 45 108 321 119 55 94 83 935 15,475 132 109 29 72 43 69 143 654 111-350 FUE BOOK ACCRUALS (5) 51 128 6,826 2,527 18,959 28,491 420 400 449 1,161 3,531 1,435 693 1,333 1,232 10,655 7,772 68 56 15 38 23 42 99 495 REM. LIFE (6) 31.60 31.99 32.73 32.84 33.13 28.88 31.60 31.99 32.16 32.22 32.37 32.42 32.56 32.60 16.28 16.55 16.64 16.73 16.89 17.05 18.03 18.58 18.83 ANAL ACCRUAL (7) 2 4 209 77 572 864 15 13 14 36 110 44 21 41 38 332 477 4 3 1 2 1 2 5 26 Exhibit No. 1 Case No. IPC-E-12-08 J. Spano, IPC Page 392 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 95 -R2 PROBABLE RETIREMENT YEAR.. 5-2031 NET SALVAGE PERCENT.. 0 1966 1978 1983 1987 1988 1989 1994 1995 1996 1997 1999 2000 2004 2005 2006 2007 2009 2010 160.49 1,137.77 3,305.98 827.98 581.11 854.19 2,519.27 6,266.51 10,942.47 20,250.897,038.38 7,560.51 102,273.16 3,630.65 1,545.93 3,356.11 6,739.43 111,283.14 315,604.66 110 703 1,915 449 309 445 1,151 2,770 4,663 8,294 2,628 2,669 26,401 834 308 557 611 5,284 80,556 STRIKE INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 3 - 2 032 NET SALVAGE PERCENT.. 0 1950 1952 1954 1956 1961 1962 1963 1964 1965 1966 1975 1978 1980 1981 110.42 202,892.52 701. 17 330.17 66.83 493.88 971.13 698.44 402.65 1,445.75 455.26 1,544.74 9,340.75 1,773.80 82 148,696 509 237 47 344 672 480 275 980 286 940 5,546 1,039 ALLOC. BOOK RESERVE (4) 90 575 1,566 367 253 364 941 2,265 3,812 6,781 2,149 2,182 21,585 682 252 455 500 4,320 65,862 74 134,019 459 214 42 310 606 433 248 883 258 847 4,999 936 ~i-351 FUTURE BOOK ACCRUALS (5) 71 563 1,740 461 328 490 1,578 4,002 7,130 13,470 4,890 5,378 80,688 2,949 1,294 2,901 6,240 106,963 249,743 37 68,873 242 11 7 24 184 365 266 155 562 197 698 4,342 837 REM. LIFE (6) 18.89 19.20 19.30 19.37 19.39 19.40 19.48 19.49 19.51 19.52 19.54 19.56 19.60 19.61 19.62 19.63 19.65 19.66 18.97 19.07 19.16 19.25 19.45 19.49 19.53 19.56 19.60 19.63 19.89 19.96 20.01 20.03 ANAL ACCRUAL (7) 4 29 90 24 i 7 25 81 205 365 690 250 275 4,117 150 66 148 318 5,441 12,816 2 3,612 13 6 1 9 19 14 8 29 10 35 217 42 Exhibit No. 1 Case No. IPC-E-12-D8 J. Spanos, IPC Page 393 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) STRIKE INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 3 -2032 NET SALVAGE PERCENT,. 0 1982 1988 1991 1992 1993 1994 1995 1997 1999 2000 2002 2003 2005 2006 2007 2008 2009 2010 2011 2,552.90 2,042.71 6,003.33 9,740.31 8,758.12 4,827.29 11,877.77 18,076.83 2,695.84 4,918.55 50,025.45 12,842.94 272,103.56 17,139.48 15,399.32 42,018.92 26,148.86 9,490.13 10,489.90 748,379.72 1,475 1,065 2,922 4,617 4,034 2,157 5,129 7,227 980 1,690 15,015 3,547 60,513 3,299 2,467 5,266 2,275 434 121 284,366 SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 6-2042 NET SALVAGE PERCENT.. 0 1928 1938 1947 1956 1975 1984 1987 1989 1990 1994 1995 1996 1997 362.99 162.66 535.22 166.26 997.53 3,338.59 1,755.14 7,086.27 7,104.56 951,076.34 103,984.20 4,168.65 268,947.66 268 115 361 106 532 1,543 760 2,918 2,847 334,275 35,123 1,349 83,040 ALLOC. BOOK RESERVE (4) 1,329 960 2,634 4,161 3,636 1,944 4,623 6,514 883 1,523 13,533 3,197 54,540 2,973 2,223 4,746 2,050 391 109 256,298 240 103 324 95 477 1,384 681 2,617 2,553 299,738 31,494 1,210 74,460 111-352 FUTURE BOOK ACCRUALS (5 ) 1,223 1,083 3,370 5,579 5,122 2,8B3 7,255 11,563 1,813 3,395 36,492 9,646 217,563 14,166 13,176 37,273 24,098 9,099 10,381 492,082 123 60 212 71 520 1,955 1,074 4,470 4,552 651,338 72,490 2,959 194,487 REM. LIFE (6) 20.05 20.17 20.22 20.24 20.26 20.27 20.29 20.31 20.34 20.36 20.38 20.39 20.42 20.43 20.44 20.45 20.46 20.47 20.48 23.41 25.10 26.35 27.37 28.89 29.38 29.52 29.61 29.65 29.80 29.84 29.88 29.91 ANAL ACCRUAL (7 ) 61 54 167 276 253 142 358 569 89 167 1,791 473 10,654 693 645 1,823 1,178 445 507 24,362 5 2 8 3 18 67 36 151 154 21,857 2,429 99 6,502 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 394 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 6 - 2 04 2 NET SALVAGE PERCENT.. 0 2000 2002 2003 2006 2007 2010 2011 6,098.61 40,913.97 1,767.04 12,091. 94 1,710.47 4,669.88 9,136.41 1,426,074.39 1,585 9,132 360 1,668 194 145 75 476,396 TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 12-2040 NET SALVAGE PERCENT.. 0 1938 1943 1944 1947 1949 1950 1957 1980 1988 1989 1993 1994 1995 1996 1997 2002 2009 2011 35,328.19 140.81 888.72 98.75 2,814.79 250.08 194.24 335.04 6,921.92 931. 82 6,886.89 587.13 4,184.40 13,789.43 11,178.72 12,711. 09 16,615.54 83,504.77 197,362.33 25,219 98 617 67 1,903 168 125 170 3,008 395 2,589 213 1,460 4,611 3,569 2,949 1,047 688 48,896 ALLOC. BOOK RESERVE (4) 1,421 8,188 323 1,496 174 130 67 427,175 19,040 74 466 51 1,437 127 94 128 2,271 298 1, 955 161 1,102 3,481 2,695 2,226 790 519 36,916 111-353 FUTUE BOOK ACCRUALS (5) 4,677 32,725 1,444 10,596 1,537 4,540 9,069 998,899 16,288 67 423 48 1,378 123 100 207 4,651 634 4,932 426 3,082 10,308 8,484 10,485 15,825 82,985 160,446 REM. LIFE (6 ) 30.01 30.07 30.10 30.18 30.21 30.29 30.30 24.19 24.85 24.98 25.33 25.55 25.66 26.34 27.87 28.22 28.26 28.40 28.43 28.47 28.50 28.53 28.67 28.84 28.88 ANAL ACCRUAL (7) 156 1,088 48 351 51 150 299 33,474 673 3 17 2 54 5 4 7 165 22 174 15 108 362 297 366 549 2,873 5,696 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 395 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) TWIN FALLS (NEW) INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 12 - 2 04 0 NET SALVAGE PERCENT,. 0 1995 2000 2002 2005 311,667.53 29,280.51 121,802.59 3,126.99 465,877.62 108,713 7,886 28,256 524 145,379 THOUSAND SPRINGS INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 6 - 2 019 NET SALVAGE PERCENT.. 0 1921 1925 1926 1929 1953 1954 1957 1959 1964 1974 1978 1982 1988 1990 1993 1996 2009 9,33-7.76 118.90 78.03 109.12 63.53 73.26 214.54 31.78 4,925.39 369.69 404.74 1,607.27 1,359.29 6,521.26 21,275.70 910.94 247,986.35 295,387.55 8,495 108 71 99 55 64 186 27 4,184 302 324 1,254 1,004 4,701 14,662 592 49,399 85,527 UPPER MALAD INTERIM SURVIVOR CURVE.. IOWA 95 - R2 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. 0 1948 1957 59,124.25 54.51 43,488 38 ALLOC. BOOK RESERVE (4 ) 102,945 7,468 26,757 496 137,665 6,224 79 52 73 40 47 136 20 3,065 221 237 919 736 3,444 10,742 434 36,193 62,662 45,838 40 ~i-354 FUTURE BOOK ACCRUALS (5) 208,723 21,813 95,046 2,631 328,213 3,114 40 26 37 23 26 78 12 1,860 148 167 689 624 3,077 10,533 477 211,794 232,726 REM. LIFE (6) 28.47 28.62 28.67 28.75 7.43 7.50 7.51 7.55 7.78 7.79 7.80 7.82 7.84 7.88 7.90 7.91 7.92 7.93 7.94 7.94 7.96 13,286 19.79 14 20.28 ANNUAL ACCRUAL (7) 7,331 762 3,315 92 11,500 419 5 3 5 3 3 10 2 237 19 21 87 79 388 1,327 60 26,607 29,275 671 1 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 396 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLANEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) UPPER MAAD INTERIM SURVIVOR CURVE.. IOWA 95 -R2 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1986 1988 1989 1992 2009 696.85 422.22 14,128.43 3,686.93 5,560.82 368 214 7,019 1,698 461 83,674.01 53,286 UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1937 1946 1957 1968 1989 1990 1991 1992 1995 1999 2003 2005 2007 2009 5,572.11 56,133.10 65.91 80.80 3,400.03 694.83 7,284.28 2,565.38 2,273.69 7,038.38 9,614.49 9,254.99 33,181.21 8,070.01 4,268 41,622 46 53 1,689 337 3,447 1,182 952 2,470 2,551 1,974 5,083 669 145,229.21 66,343 UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 5 - 2033 NET SALVAGE PERCENT.. 0 1947 1949 1989 90,282.13 1,487.44 1,595.84 66,680 1,089 793 ALLOC. BOOK RESERVE (4) 388 226 7,398 1,790 486 56,166 4,830 47,101 52 60 1,911 381 3,901 1,338 1,077 2,795 2,887 2,234 5,752 757 75,076 65,988 1,078 785 ~i-355 FUTURE BOOK ACCRUALS (5) 309 197 6,730 1,897 5,075 27,508 742 9,032 14 21 1,489 313 3 J 384 1,228 1,196 4,243 6,728 7,021 27,429 7,313 70,153 24,294 410 811 REM. LIFE (6) 21.22 21.26 21.28 21. 34 21.59 19.02 19.67 20.28 20.72 21. 28 21.30 21. 32 21. 34 21.39 21.46 21.51 21. 54 21. 56 21.59 19.73 19.85 21.28 ANAL ACCRUAL (7) 15 9 316 89 235 1,336 39 459 1 1 70 15 159 58 56 198 313 326 1,272 339 3,306 1,231 21 38 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 397 of 491 IDAHO POWER COMPANY ACCOUNT 335.00 MISCELLAEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) FUTRE BOOK ACCRUALS (5 ) REM. LIFE (6 ) ANAL ACCRUAL (7) UPPER SALMON B INTERIM SURVIVOR CURVE.. IOWA 95-R2 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. 0 2001 65,664.60 20,428 20,216 45,449 21.48 2,116 2005 21,634.36 4,614 4,566 17,068 21.54 792200738,137.32 5,842 5,781 32,356 21.56 1,501 218,801. 69 99,446 98,414 120,388 5,699 UPPER SALMON COMMON INTERIM SURVIVOR CURVE.. IOWA 95 -R2 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1974 2005 202.47 1,727.90 126 369 68 201 134 20.92 1,527 21.54 6 71 1,930.37 495 269 1,661 77 17,912,344.06 6,226,109 6,528,127 11,384,217 430,899 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 26.4 2.41 ~i-356 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 398 of 491 IDAHO POWER COMPANY ACCOUNT 335.10 MISCELLANEOUS POWER PLANT EQUIPMENT - EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CURVE.. 15-SQUARE NET SALVAGE PERCENT.. 0 1997 3,118.64 2,911 2,707 412 1. 00 412 1998 722.63 626 582 141 2.00 7020028,036.74 4,822 4,483 3,554 6.00 59220041,105.18 516 480 625 8.00 7820059,355.05 3,742 3,479 5,876 9.00 65320092,693.77 359 334 2,360 13 .00 182 25,032.01 12,976 12,065 12,967 1,987 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .6.5 7.94 111-357 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 399 of 491 IDAHO POWER COMPANY ACCOUNT 335.20 MISCELLANEOUS POWER PLANT EQUIPMENT - FURNITURE CALCULTED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) FUTURE BOOK ACCRUALS (5) REM. LIFE (6 ) ANAL ACCRUAL (7) SURVIVOR CURVE.. 20 - SQUARE NET SALVAGE PERCENT.. 0 1987 346.08 346 346 1991 5,573.64 5,574 5,574 1992 12,491. 01 11,866 11,482 1,009 1. 00 1,009 1993 45,757.25 41,182 39,849 5,908 2.00 2,954 1994 37,648.03 32,001 30,965 6,683 3.00 2,228 1995 83,206.73 66,565 64,410 18,797 4.00 4,699 1996 95,801. 64 71,851 69,524 26,278 5.00 5,256 1997 12,363.05 8,654 8,374 3,989 6.00 665 1999 12,100.73 7,260 7,025 5,076 8.00 634 2000 677.67 373 361 317 9.00 35 2004 1,845.15 646 625 1,220 13 .00 94 2005 56,385.47 16,916 16,368 40,017 14.00 2,858 364,196.45 263,234 254,903 109,293 20,432 COMPOSITE REMAINING LIFE AN ANUAL ACCRUAL RATE,PERCENT . .5.3 5.61 ~i-358 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 400 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 335.30 MISCELLANEOUS POWER PLANT EQUIPMENT - COMPUTER CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. 5 - SQUARE NET SALVAGE PERCENT.. 0 2003 2006 2009 2010 2011 11,035.22 5,736.34 91,339.57 5,336.98 10,713.16 124,161.27 11,035 5,736 36,536 1,067 536 54,910 ALLOC. BOOK RESERVE (4) 11,035 5,736 47,667 1,392 699 66,529 FUTURE BOOK ACCRUALS (5) 43,673 3,945 10,014 57,632 REM. LIFE (6) 3.00 4.00 4.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 3.3 ~i-359 ANAL ACCRUAL (7) 14,558 986 2,108 17,652 14.22 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 401 of 491 IDAHO POWER COMPANY ACCOUNT 336.00 ROADS, RAILROADS AN BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2 ) CALCULATED ACCRUED (3) MILNER DAM INTERIM SURVIVOR CUVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 6-2067 NET SALVAGE PERCENT.. 0 1992 12,737.21 3,511 12,737.21 3,511 NIAGAR SPRINGS HATCHERY INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 6 - 2 04 5 NET SALVAGE PERCENT.. 0 1966 46,667.72 28,048 46,667.72 28,048 RAPID RIVER HATCHERY INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. 0 1964 1965 3,241.03 3,956.36 1,994 2,406 7,197.39 4,400 AMERICAN FALLS INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 2 - 2 055 NET SALVAGE PERCENT.. 0 1978 1980 1981 302,946.18 3,386.40 532,943.29 139,643 1,497 230,562 839,275.87 371,702 ALLOC. BOOK RESERVE (4) 3,403 3,403 46,677 46,677 3,241 3,956 7,197 183,171 1,964 302,430 487,564 /1-360 FUTUE BOOK ACCRUALS (5 ) REM. LIFE (6 ) 9,334 9,334 48.33 119,776 1,423 230,514 351,712 9- 9- 36.44 37.11 37.43 ANAL ACCRUAL (7) 193 193 3,287 38 6,159 9,484 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 402 of 491 IDAHO POWER COMPANY ACCOUNT 336. 00 ROADS, RAILROADS AND BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) BROWNLEE INTERIM SURVIVOR CURVE.. IOWA 75 -R3 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. 0 1960 1965 1980 274,510.29 16,406.90 227,526.95 176,532 9,971 111,618 518,444.14 298,121 BLISS INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. 0 1950 1991 1993 1994 29,776.21 225,571.14 35,232.85 195,896.44 22,602 108,055 15,943 85,852 486,476.64 232,452 CASCADE INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 1-2061 NET SALVAGE PERCENT.. 0 1983 122,668.04 48,080 122,668.04 48,080 CLEAR LAKE INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 6-2017 NET SALVAGE PERCENT.. 0 1955 1964 5,744.89 5,352.41 5,175 4,736 11, 097.30 9,911 ALLOC. BOOK RESERVE (4) 177,964 10,052 112,523 300,539 23,497 112,334 16,574 89,252 241,658 49,703 49,703 5,663 5,182 10,845 ~i-361 FUTE BOOK ACCRUALS (5 ) 96,546 6,355 115,004 217,905 6,279 113,237 18,658 106,644 244,819 REM. LIFE (6) 25.42 27.16 30.78 16.97 21,37 21.44 21.47 72,965 72,965 41.39 82 170 252 5.77 5.86 ANAL ACCRUAL (7) 3,798 234 3,736 7,768 370 5,299 870 4,967 11,506 1,763 1,763 14 29 43 Exibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 403 of 491 IDAHO POWER COMPANY ACCOUNT 336.00 ROADS, RAILROADS AN BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (i) ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) HELLS CANON INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. 0 1967 819,191.89 486,166 819,191.89 486,166 LOWER MAAD INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1948 1985 1991 25,560.48 199,373.45 19,631.52 19,634 108,760 9,404 244,565.45 137,798 LOWER SALMON INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1919 1949 1966 1984 1989 1,361.60 2,023.78 6,090.37 76 1017.96 3,199.33 1,204 1,545 4,149 42,191 1,610 88,693.04 50 ,699 MILNER INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 11-2068 NET SALVAGE PERCENT.. 0 1992 1995 487,016.63 2,122.87 132,673 502 489,139.50 133,175 ALLOC. BOOK RESERVE (4) 552,107 552,107 20,126 111,486 9,640 141,252 1,309 1,680 4,512 45,885 1,751 55,138 129,803 491 130 1294 ~i-362 FUTE BOOK ACCRUALS (5) REM. LIFE (6) 267,085 267,085 27.77 5,434 87,887 9,992 103,313 52 344 1,578 30,133 1,448 33,555 357,214 1,632 358,846 16.50 21.12 21.37 8.67 16.74 19.67 21.07 21. 29 49.09 50.27 ANAL ACCRUAL (7) 9,618 9,618 329 4,161 468 4,958 6 21 80 1,430 68 1,605 7,277 32 7,309 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 404 of 491 IDAHO POWER COMPANY ACCOUNT 336.00 ROADS, RAILROADS AN BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULTED ACCRUED (3) OXBOW HATCHERY INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 7 - 2 04 5 NET SALVAGE PERCENT.. 0 1961 3,070.44 1,953 3,070.44 1,953 OXBOW INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 7-2045 NET SALVAGE PERCENT.. 0 1961 1962 1963 543,934.95 4,870.64 17,036.77 345,964 3,064 10,596 565,842.36 359,624 PAHSIMEROI ACCUMLATING PONDS INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 6-2045 NET SALVAGE PERCENT.. 0 1966 1981 1988 15,308.71 1,041.65 10,152.38 9,201 502 4,181 26,502.74 13,884 PAHSIMEROI TRAPPING INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 6 - 2 04 5 NET SALVAGE PERCENT.. 0 1969 1981 13,065.48 2,546.87 7,567 1,228 15,612.35 8,795 ALLOC. BOOK RESERVE (4) 3,070 3,070 292,477 2,590 8,958 304,025 14,532 793 6,603 21,928 13,065 2,220 15,285 ~i-363 FUTURE BOOK ACCRUALS (5 ) 251,458 2,280 8,079 261,817 777 249 3,549 4,575 REM. LIFE (6) 25.79 26.15 26.50 27.43 30.89 31.89 327 32730.89 ANAL ACCRUAL (7 ) 9,750 87 305 10,142 28 8 111 147 11 11 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 405 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 336.00 ROADS, RAILROADS AN BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SHOSHONE FALLS INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 5-2031 NET SALVAGE PERCENT.. 0 1919 1921 1988 1,013.61 29,476.96 20,892.83 898 25,931 11,233 51,383.40 38,062 STRIKE INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETI REMENT YEAR.. 3 - 2 032 NET SALVAGE PERCENT.. 0 1952 1979 1988 2003 2007 193,188.70 20,776.00 8,167.40 16,738.82 9,311.79 146,325 12,675 4,310 4,665 1,507 248,182.71 169,482 SWAN FALLS INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 6-2042 NET SALVAGE PERCENT.. 0 1928 1984 1994 1995 6,433.83 747,680.61 81,828.67 3.04 5,431 354,483 29,327 1 835,946.15 389,242 ALLOC. BOOK RESERVE (4 ) 954 27,542 11,931 40,427 160,856 13,934 4,738 5,128 1,657 186,313 5,397 352,234 29,141 1 386,772 ~i-364 FUE BOOK ACCRUALS (5) 60 1,935 8,962 10,956 32,332 6,842 3,429 11,611 7,655 61,870 1,037 395,447 52,688 2 449,174 REM. LIFE (6 ) 8.54 9.01 19.39 16.76 19.76 20.17 20.55 20.61 11.69 28.94 29.86 29.93 ANAL ACCRUAL (7 ) 7 215 462 684 1,929 346 170 565 371 3,381 89 13,664 1,765 15,518 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 406 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 336. 00 ROADS, RAILROADS AN BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) TWIN FALLS INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 12 - 2 040 NET SALVAGE PERCENT.. 0 1938 1956 1987 1991 22,943.23 844.99 864,397.21 5,588.07 18,223 582 393,119 2,285 893,773.50 414,209 TWIN FALLS (NEW) INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 12-2040 NET SALVAGE PERCENT.. 0 1995 1,023,829.64 363,541 1,023,829.64 363,541 THOUSAN SPRINGS INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 6-2019 NET SALVAGE PERCENT.. 0 1919 1921 1989 1991 1993 2010 2011 2,037.02 13,288.62 11,293.65 3,748.84 22,542.33 29,108.02 590,697.52 1,881 12,238 8,275 2,675 15,590 3,238 17,922 672,716.00 61,819 ALLOC. BOOK RESERVE (4 ) 17,424 556 375,886 2,185 396,051 321,457 321,457 1,691 10,999 7,437 2,404 14,011 2,910 16,107 55,559 ~i-365 FUTRE BOOK ACCRUALS (5) 5,519 289 488,512 3,403 497,722 REM. LIFE (6) 15.34 22.14 27.98 28.30 702,373 702,37328.57 346 2,290 3,857 1,345 8,531 26,198 574,590 617,157 5.71 5.86 7.94 7.95 7.96 7.99 7.99 ANAL ACCRUAL (7) 360 13 17,459 120 17,952 24,584 24,584 61 391 486 169 1,072 3,279 71,914 77,372 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 407 .of 491 IDAHO POWER COMPANY ACCOUNT 336.00 ROADS, RAILROADS AN BRIDGES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) UPPER MAAD INTERIM SURVIVOR CURVE.. IOWA 75-R3 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. 0 1948 15,773.68 12,116 1986 36,404.18 19,492 1991 7,939.82 3,803 60,117.68 35,411 UPPER SALMON A INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 5 - 2 033 NET SALVAGE PERCENT.. 0 1991 1,650.89 791 1,650.89 791 UPPER SALMON COMMON INTERIM SURVIVOR CURVE.. IOWA 75 - R3 PROBABLE RETIREMENT YEAR.. 5-2033 NET SALVAGE PERCENT.. 0 1937 1940 1947 1951 9,578.80 55.47 17,097.18 977.02 7,821 45 13,212 737 27,708.47 21,815 8,112,490.52 3,682,691 COMPOSITE REMAINING LIFE AND ANNUAL ACCRUAL RATE, PERCENT .. 20.9 ALLOC. BOOK RESERVE (4) 12,268 19,736 3,851 35,854 833 833 9,579 55 17,097 977 27,708 3,821,659 ~i-366 FUTE BOOK ACCRUALS (5) 3,506 16,668 4,089 24,264 REM. LIFE (6) 16.50 21.17 21. 37 818 818 21. 37 4,290,830 ANAL ACCRUAL (7) 212 787 191 1,190 38 38 205,266 2.53 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 408 of 491 IDAHO POWER COMPANY ACCOUNT 341. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTUE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SALMON DIESEL INTERIM SURVIVOR CURVE.. SQUARE PROBABLE RETIREMENT YEAR.. 6-2012 NET SALVAGE PERCENT.. 0 1967 2,587.29 2,530 1972 1,427.85 1,392 1987 7,943.94 7,626 11,959.08 11,548 2,587 1,428 7,944 11,959 EVANDER ANREWS/DANSKIN #2 INTERIM SURVIVOR CURVE. .SQUARE PROBABLE RETIREMENT YEAR. .6-2036 NET SALVAGE PERCENT..0 2001 3,922,174.30 1,120,604 837,715 3,084,460 25.00 123,3782002325,945.68 86,281 64,500 261,446 25.00 10,458200428,712.80 6,281 4,695 24,017 25.00 961 4,276,832.78 1,213,166 906,910 3,369,923 134,797 BENNETT MOUNTAIN INTERIM SURVIVOR CURVE..SQUARE PROBABLE RETIREMENT YEA..6-2041 NET SALVAGE PERCENT..0 2005 1,012,940.68 168,827 180,357 832,583 30.00 27,7532007395,175.75 46,492 49,667 345,508 30.00 11,517200847,436.37 4,312 4,606 42,830 30.00 1,42820092,750.48 172 184 2,567 30.00 86 1,458,303.28 219,803 234,815 1,223,488 40,784 ~i-367 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 409 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 341.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) EVANER ANDREWS/DANSKIN #1 INTERIM SURVIVOR CURVE.. SQUARE PROBABLE RETIREMENT YEAR.. 6 - 2 04 3 NET SALVAGE PERCENT.. 0 2008 1,422,500.85 121,923 1,422,500.85 121,923 7,169,595.99 1,566,440 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT ., 27.2 5,749,134 ALLOC. BOOK RESERVE (4) 266,778 266,778 1,420,462 ~i-368 FUTE BOOK ACCRUALS (5) REM. LIFE (6 ) 1,155,72332.00 1,155,723 ANAL ACCRUAL (7) 36,116 36,116 211,697 2.95 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 410 of 491 IDAHO POWER COMPANY ACCOUNT 342.00 FUEL HOLDERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2 ) CALCULATED ACCRUED (3) SALMON DIESEL INTERIM SURVIVOR CURVE.. IOWA 50-S2. 5 PROBABLE RETIREMENT YEAR.. 6-2012 NET SALVAGE PERCENT.. 0 1959 1994 28,502.96 32,803.43 27,898 30,978 61,306.39 58,876 EVANER ANDREWS/DANSKIN #2 INTERIM SURVIVOR CURVE.. IOWA 50-S2. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 0 3 6 NET SALVAGE PERCENT.. 0 2001 680,176.64 199,652 680,176.64 199,652 BENNETT MOUNTAIN INTERIM SURVIVOR CURVE.. IOWA 50-S2.5 PROBABLE RETIREMENT YEAR.. 6-2041 NET SALVAGE PERCENT.. 0 2005 2007 2,025,881.34 245,078.25 348,796 29,581 2,270,959.59 378,377 EVANER ANREWS/DANSKIN #1 INTERIM SURVIVOR CURVE.. IOWA 50-S2.5 PROBABLE RETIREMENT YEAR.. 6-2043 NET SALVAGE PERCENT.. 0 2008 1,433,423.71 126,485 1,433,423.71 126,485 4,445,866.33 763,390 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 28.5 3,454,953 ALLOC. BOOK RESERVE (4 ) 28,503 32,803 61,306 98,565 98,565 356,732 30,254 386,986 444,057 444,057 990,914 111-369 FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6) 581,612 24.02 581,612 1,669,149 28.85 214,824 29.14 1,883,974 989,367 31.00 989,367 ANAL ACCRUAL (7) 24,214 24,214 57,856 7,372 65,228 31,915 31,915 121,357 2.73 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 411 of 491 YEAR (l ) IDAHO POWER COMPANY ACCOUNT 343.00 PRIME MOVERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) EVANER ANREWS/DANSKIN #2 INTERIM SURVIVOR CURVE.. IOWA 40 - S 1 . 5 PROBABLE RETIREMENT YEAR.. 6 - 2 036 NET SALVAGE PERCENT.. 0 2001 2002 2003 2006 2007 2008 2009 25,261,522.84 935,116.34 931,741.28 571,646.03 70,946.77 1,717,775.10 185,738.50 29,674,486.86 7,820,462 267,266 243,147 101,336 10,374 194,263 14,482 4,799,650 164,029 149,227 62,193 6,367 119,225 8,888 8,651,330 5,309,578 BENNETT MOUNTAIN INTERIM SURVIVOR CURVE.. IOWA 40-S1.5 PROBABLE RETIREMENT YEAR.. 6-2041 NET SALVAGE PERCENT.. 0 2005 2006 2007 2008 2009 2010 2011 1,266,175.86 13,900.00 13,467,574.51 15,015,694.04 2,155.14 8,203,038.72 12,580.13 37,981,118.40 234,268 2,194 1,740,819 1,490,608 146 285,630 112 36,194 339 268,952 230,295 23 44,129 17 3,753,777 579,949 EVANER ANREWS/DANSKIN #1 INTERIM SURVIVOR CURVE.. IOWA 40-S1.5 PROBABLE RETI REMENT YEAR.. 6 - 2043 NET SALVAGE PERCENT.. 0 2008 31,399,868.27 2009 1,758,742.88 33,158,611.15 100,814,216.41 2,987,069 114,248 2,761,784 105,631 FUTE BOOK ACCRUALS (5 ) 20,461,873 771,087 782,515 509,453 64,580 1,598,550 176,850 24,364,909 1,229,982 13,561 13,198,622 14,785,399 2,133 8,158,910 12,563 37,401,169 REM. LIFE (6) 21.70 21. 99 22.26 23.02 23.24 23.45 23.65 26.12 26.47 26.81 27.13 27.43 27.72 27.92 28,638,08528.44 1,653,111 28.79 30,291,196 92,057,274 ANAL ACCRUAL (7 ) 942,943 35,065 35,153 22,131 2,779 68,168 7,478 1,113,717 47,090 512 492,302 544,983 78 294,333 450 1,379,748 1,006,965 57,420 1,064,385 3,557,850 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 25.9 3,101,317 2,867,415 15,506,424 8,756,942 ~i-370 3.53 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 412 of 491 IDAHO POWER COMPANY ACCOUNT 344.00 GENERATORS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SALMON DIESEL INTERIM SURVIVOR CURVE.. IOWA 45-S2 PROBABLE RETIREMENT YEAR.. 6-2012 NET SALVAGE PERCENT.. 0 1967 1995 2002 484,555.66 37,391.18 19,698.11 472,597 35,184 17,728 541,644.95 525,509 EVANDER ANDREWS /DANSKIN #2 INTERIM SURVIVOR CURVE.. IOWA 45-S2 PROBABLE RETIREMENT YEAR.. 6-2036 NET SALVAGE PERCENT.. 0 200113,166,034.86 3,968,506 13,166,034.86 3,968,506 BENNETT MOUNTAIN INTERIM SURVIVOR CURVE.. IOWA 45 - S2 PROBABLE RETIREMENT YEAR.. 6-2041 NET SALVAGE PERCENT.. 0 2006 8,139,999.35 1,230,524 8,139,999.35 1,230,524 EVANER ANREWS/DANSKIN #1 INTERIM SURVIVOR CURVE.. IOWA 45-S2 PROBABLE RETIREMENT YEAR.. 6-2043 NET SALVAGE PERCENT.. 0 2008 9,834,220.56 893,734 9,834,220.56 893,734 31,681,899.72 6,618,273 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 26.8 14,995,413 ALLOC. BOOK RESERVE (4) 484,556 37,391 19,698 541,645 7,201,994 7,201,994 7,868,244 7,868,244 1,074,604 1,074,604 16,686,487 111-371 FUTURE BOOK ACCRUALS (5) REM. LIFE (6) 5,964,04123.06 5,964,041 271,755 28.02 271,755 8,759,617 30.01 8,759,617 ANAL ACCRUAL (7 ) 258,631 258,631 9,699 9,699 291,890 291,890 560,220 1. 77 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 413 of 491 IDAHO POWER COMPANY ACCOUNT 345.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) ALLOC. BOOK RESERVE (4) CALCULATED ACCRUED (3) SALMON DIESEL INTERIM SURVIVOR CURVE.. IOWA SO-SI.S PROBABLE RETIREMENT YEAR. . 6-2012 NET SALVAGE PERCENT.. 0 1967 19,525.95 19,048 10,802 1971 391.85 382 217 1987 7,092.20 6,802 3,857 1999 20,553.90 18,968 10,757 2001 11,171.47 10,154 5,758 2003 226,404.59 201,222 114,115 2010 8,204.60 4,102 2,326 293,344.56 260,678 147,833 EVANDER ANDREWS !DANSKIN #2 INTERIM SURVIVOR CURVE.. IOWA 50-S1.5 PROBABLE RETIREMENT YEAR.. 6-2036 NET SALVAGE PERCENT.. 0 2001 2002 2003 2004 2008 2009 2,147,088.55 6,403.72 36,851.59 686,783.48 26,871.56 8,330,251.91 639,704 1,765 9,280 155,886 2,957 633,932 259,806 717 3,769 63,311 1,201 257,462 11,234,250.81 1,443,524 586,266 BENNETT MOUNTAIN INTERIM SURVIVOR CURVE.. IOWA 50-S1. 5 PROBABLE RETIREMENT YEAR.. 6-2041 NET SALVAGE PERCENT.. 0 2005 1,519,410.98 267,599 268,829 2007 9,373,968.82 1,159,372 1,164,699 2008 126,849.68 12,100 12,156 2010 120,130.05 4,034 4,053 2011 10,730.97 92 92 11,151,090.50 1,443,197 1,449,828 111-372 FUTURE BOOK ACCRUALS (5) REM. LIFE (6 ) ANAL ACCRUAL (7 ) 8,724 0.98 8,724 175 0.99 175 3,235 1. 00 3,235 9,797 1. 00 9,797 5,413 1. 00 5,413 112,290 1. 00 112,290 5,878 1. 00 5,878 145,512 145,512 1,887,282 5,687 33,083 623,473 25,671 8,072,790 10,647,985 1,250,582 8,209,270 114,694 116,078 10,639 9,701,262 23.21 23.37 23.53 23.67 24.18 24.28 27.88 28.27 28.45 28.78 28.89 81,313 243 1,406 26,340 1,062 332,487 442,851 44,856 290,388 4,031 4,033 368 343,676 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 414 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 345.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) EVANDER ANDREWS/DANSKIN #1 INTERIM SURVIVOR CURVE.. IOWA 50-S1. 5 PROBABLE RETIREMENT YEAR.. 6-2043 NET SALVAGE PERCENT.. 0 2008 2010 2,359,610.71 33.29 214,111 1 19,478 o FUTURE BOOK ACCRUALS (5) REM. LIFE (6) 2,359,644.00 214,112 19,478 2,340,133 30.063330.45 2,340,166 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 22.6 22,834,92525,038,329.87 3,361,511 2,203,405 111-373 ANAL ACCRUAL (7) 77,849 1 77,850 1,009,889 4.03 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 415 of 491 YEAR (l ) IDAHO POWER COMPANY ACCOUNT 346.00 MISCELLAEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SALMON DIESEL INTERIM SURVIVOR CURVE.. IOWA 35 - R2 . 5 PROBABLE RETIREMENT YEAR.. 6-2012 NET SALVAGE PERCENT.. 0 1950 1955 1999 49.64 93.00 861.86 1,004.50 49 91 794 934 EVANER ANDREWSjDANSKIN #2 INTERIM SURVIVOR CUVE.. IOWA 35 - R2 . 5 PROBABLE RETIREMENT YEAR.. 6 - 2 036 NET SALVAGE PERCENT.. 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 1,105,803.57 46,565.61 38,707.79 7,675.10 1,967.35 5,334.32 8,929.62 4,383.57 13,971. 35 38,334.57 1,075.28 1,272,748.13 336,640 13,055 9,895 1,762 398 926 1,275 485 1,063 1,513 11 367,023 BENNETT MOUNTAIN INTERIM SURVIVOR CURVE.. IOWA 35 -R2. 5 PROBABLE RETIREMENT YEAR.. 6-2041 NET SALVAGE PERCENT.. 0 2005 2007 2008 2010 2011 4,132.42 863,188.17 14,221. 16 26,134.65 3,450.24 911,126.64 751 109,159 1,383 886 30 112,209 ALLOC. BOOK RESERVE (4) 28 52 453 533 318,991 12,371 9,376 1,670 377 877 1,208 460 1,007 1,434 10 347,781 692 100,556 1,274 816 28 103,366 ~i-374 FUE BOOK ACCRUALS (5 ) 22 41 409 472 786,813 34,195 29,332 6,005 1,590 4,457 7,721 3,924 12,964 36,901 1,065 924,967 3,441 762,632 12,947 25,318 3,423 807,761 REM. LIFE (6) 0.70 0.85 1. 00 21.18 21.51 21.81 22.09 22.35 22.58 22.81 23.01 23.20 23.37 23.49 25.35 26.11 26.45 27.06 27.26 ANAL ACCRUAL (7) 22 41 409 472 37,149 1,590 1,345 272 71 197 338 171 559 1,579 45 43,316 136 29,208 489 936 126 30,895 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 416 of 491 IDAHO POWER COMPANY ACCOUNT 346.00 MISCELLAEOUS POWER PLANT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) EVANER ANDREWS/DANSKIN #1 INTER 1M SURVIVOR CURVE.. IOWA 35 - R2 . 5 PROBABLE RETIREMENT YEAR.. 6-2043 NET SALVAGE PERCENT.. 0 2008 938,290.32 87,514 938,290.32 87,514 LAGLEY GULCH INTERIM SURVIVOR CUVE.. IOWA 35 - R2 . 5 PROBABLE RETIREMENT YEAR.. 6 - 2 04 2 NET SALVAGE PERCENT.. 0 2011 3,668.82 31 3,668.82 31 3,126,838.41 567,711 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 24.5 2,566,782 ALLOC. BOOK RESERVE (4 ) 108,377 108,377 560,057 "'-375 FUTUE BOOK ACCRUALS (5) REM. LIFE ( 6) 829,913 27.61 829,913 3,669 27.94 3,669 ANAL ACCRUAL (7) 30,058 30,058 131 131 104,872 3.35 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 417 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 350.20 LAND RIGHTS AN EASEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 70-R3 NET SALVAGE PERCENT.. 0 1919 1922 1925 1926 1929 1936 1941 1946 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 18.08 439.12 18.83 105.85 697.46 161. 47 15,732.27 12,068.71 215.92 17,546.94 61,524.12 63,431.81 53,975.04 79,403.75 15,893.78 6,342.08 66,616.61 19,054.99 20,508.70 42,715.89 150,742.35 258,129.95 25,372.63 90,155.57 160,628.50 33,098.37 167,203.09 107,050.71 11,448.14 126,720.49 11,359.07 6,546.09 4,111.78 502,248.21 145,125.22 57,049.91 233,575.19 102,427.29 72,410.79 5,388.11 1,098,402.14 375,476.99 16 393 17 93 604 134 12,559 9,200 161 12,957 44,913 45,770 38,477 55,900 11,046 4,350 45,061 12,710 13,480 27,662 96,130 161,995 15,666 54,724 95,826 19,396 96,190 60,423 6,337 68,755 6,035 3,404 2,092 249,688 70,468 27,034 107,944 46,107 31,726 2,295 454,585 150,780 ALLOC. BOOK RESERVE (4 ) 17 428 19 101 658 146 13,680 10,021 175 14,114 48,923 49,856 41,912 60,891 12,032 4,738 49,084 13,845 14,684 30,132 104,713 176,458 17,065 59,610 104,382 21,128 104,778 65,818 6,903 74,894 6,574 3,708 2,279 271,981 76,760 29,448 117,581 50,224 34,559 2,500 495,171 164,242 ~i-376 FUTRE BOOK ACCRUALS (5) 5 39 15 2,052 2,048 41 3,433 12,601 13,576 12,063 18,513 3,862 1,604 17,533 5,210 5,825 12,584 46,029 81,672 8,308 30,546 56,246 11,970 62,425 41,233 4,545 51,826 4,785 2,838 1,833 230,267 68,365 27,602 115,994 52,203 37,852 2,888 603,231 211,235 REM. LIFE (6 ) 1 11 6.55 7.36 8.49 9.42 11.94 14.12 16.64 17.74 18.31 18.90 19.49 20.10 20.72 21. 35 21.99 22.65 23.31 23.99 24.67 25.36 26.07 26.78 27.51 28.24 28.98 29.73 30.49 31. 25 32.02 32.81 33.60 34.39 35.20 36.01 36.83 37.65 38.49 39.33 40.18 41.03 41. 89 ANAL ACCRUAL (7) 1 1 4 1 145 123 2 187 667 697 600 893 181 73 774 224 243 510 1,815 3,133 310 1,110 1,992 413 2,100 1,352 145 1,619 146 84 53 6,542 1,899 749 3,081 1,356 962 72 14 ,702 5,043 Exhibit No. 1 Case No. IPC-E-12-D8 J. Spanos, IPC Page 418 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 350.20 LAND RIGHTS AND EASEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 70 - R3 NET SALVAGE PERCENT.. 0 1982 1983 1984 1985 1986 1987 1989 1990 1991 1992 1993 '1994 1995 1996 1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 264,820.73 254,798.75 13,658.38 50,686.80 99,047.47 131,042.51 14,651. 56 134,442.46 493,202.84 95,924.73 210,899.29 984,883.03 687,538.84 290,370.42 1,472,391.46 121,854.39 1,296,251.87 2,281,245.32 2,573,381.90 3,199,716.34 242,149.94 2,394,033.75 926,834.76 1,998,011.27 837,882.14 1,628,273.38 3,176,575.21 468,119.11 30,563,830.66 103,052 95,985 4,974 17,820 33,548 42,720 4,398 38,585 135,138 25,009 52,183 230,601 151,747 60,191 285,438 20,297 198,327 317,755 322,779 357,440 23,697 201,099 64,878 112,168 35,308 45,820 44,472 1,671 5,190,203 ALLOC. BOOK RESERVE (4 ) 112,253 104,555 5,418 19,411 36,543 46,534 4,791 42,030 147,203 27,242 56,842 251,190 165,295 65,565 310,922 22,109 216,034 346,125 351,597 389,353 25,813 219,054 70,670 122,183 38,460 49,911 48,443 1,820 5,653,598 FUTURE BOOK ACCRUALS (5) 152,568 150,244 8,240 31,276 62,504 84,509 9,861 92,412 346,000 68,683 154,057 733,693 522,244 224,805 1,161,469 99,745 1,080,218 1,935,120 2,221,785 2,810,363 216,337 2,174,980 856,165 1,875,828 799,422 1,578,362 3,128,132 466,299 24,910,233 REM. LIFE (6 ) 42.76 43.63 44.51 45.39 46.29 47.18 48.99 49.91 50.82 51.75 52.68 53.61 54.55 55.49 56.43 58.34 59.29 60.25 61.22 62.18 63.15 64.12 65.10 66.07 67. OS 68.03 69.02 69.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 58.5 ~i-377 ANAL ACCRUAL (7) 3,568 3,444 185 689 1,350 1,791 201 1,852 6,808 1,327 2,924 13,686 9,574 4,051 20,582 1,710 18,219 32,118 36,292 45,197 3,426 33,920 13,152 28,392 11,923 23,201 45,322 6,685 425,593 1.39 Exhibit NO. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 419 of 491 YEAR (l ) IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 65-R3 NET SALVAGE PERCENT.. -35 1909 1919 1920 1921 1923 1924 1926 1927 1928 1929 1930 1931 1934 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 2,402.80 7,192.68 376.56 32,528.31 6,821.09 16,331.28 482.43 95,341.69 2,066.40 23,020.10 167.15 21.14 104.55 5,720.92 21,217.68 26,411.41 7,050.31 6,006.23 760.86 104.39 2,058.11 489.88 54.26 31,302.07 32,273.42 69,678.13 159,841.48 68,597.74 177,733.33 101,634.99 129,318.63 84,649.15 81,880.69 198,775.24 24,242.51 11,960.93 845,236.14 765,366.76 375,290.85 89,988.60 111,646.70 91,967.43 3,150 9,054 472 40,603 8,441 20,121 589 115,920 2,501 27,725 200 25 123 6,640 24,475 30,274 8,027 6,792 854 116 2,275 537 59 33,735 34,460 73,689 167,351 71,080 182,170 103,011 129,565 83,791 80,047 191,846 23,085 11,233 782,602 698,153 337,191 79,582 97,135 78,696 ALLOC. BOOK RESERVE (4) 3,244 9,710 508 43,913 9,208 22,047 651 128,711 2,790 31,077 226 29 141 7,723 28,644 35,655 9,518 8,108 1,027 141 2,778 661 73 42,255 43,163 92,300 209,618 89,032 228,180 129,028 162,288 104,954 100,264 240,299 28,915 14,070 980,259 874,481 422,353 99,682 121,668 98,572 ~i-378 FUTURE BOOK ACCRUALS (5) 3 406 1,765 6,168 3,575 11,760 8,179 12,292 9,322 10,275 28,048 3,812 2,077 160,810 158,764 84,290 21,803 29,055 25,584 REM. LIFE (6 ) 13.11 13.59 14. 08 14.59 15.11 15.65 16.20 16.76 17.34 17.93 18.53 19.15 19.78 20.42 21.08 21.74 22.42 23.11 23.80 ANAL ACCRUAL (7) 30 125 423 237 751 505 733 538 573 1,514 199 105 7,875 7,531 3,877 972 1,257 1,075 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 420 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 352. 00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 65-R3 NET SALVAGE PERCENT.. -35 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 750,592.09 264,638.32 922,517.32 142,094.98 263,440.37 162,330.28 144,440.09 604,493.93 183,723.13 375,094.67 1,080,899.34 1,675,058.42 886,667.26 272,015.82 104,163.73 941,536.88 1,554,393.45 528,675.13 197,362.28 243,659.82 653,955.37 29,818.07 25,003.87 1,666,453.12 164,434.24 83,154.26 259,533.74 760,495.17 115,956.23 957,574.31 293,546.21 321,536.71 243,088.40 566,966.15 776,285.26 396,766.23 4,709,891.66 1,015,660.87 2,567,324.90 190,142.98 3,423,448.15 2,146,579.05 631,204 218,591 748,011 113,031 205,509 124,069 108,116 442,684 131,568 262,461 738,362 1,116,395 575,853 172,029 64,080 562,794 902,011 297,346 107,519 128,336 332,628 14,622 11,799 755,566 71,480 34,592 103,061 287,467 41,616 325,172 94,011 96,699 68,361 148,374 187,830 88,090 952,799 185,214 416,427 27,012 417,382 218,442 ALLOC. BOOK RESERVE (4) 790,623 273,799 936,931 141,579 257,413 155,404 135,422 554,490 164,797 328,749 924,845 1, 398,356 721,293 215,477 80,264 704,935 1,129,826 372,445 134,674 160,749 416,638 18,315 14,779 946,395 89,533 43,329 129,090 360,071 52,127 407,299 117,755 121,122 85,626 185,848 235,269 110,338 1,193,441 231,992 521,601 33,834 522,798 273,613 111-379 FUTURE BOOK ACCRUALS (5) 222,676 83,463 308,467 50,249 98,231 63,742 59,572 261,577 83,229 177,629 534,369 862,973 475,708 151,744 60,357 566,140 968,605 341,266 131,765 168,192 466,202 21,939 18,976 1,303,317 132,453 68,929 221,281 666,597 104,414 885,426 278,532 312,953 242,543 579,556 812,716 425,296 5,164,913 1,139,150 2,944,288 222,859 4,098,857 2,624,269 REM. LIFE (6) 24.51 25.23 25.96 26.70 27.44 28.20 28.96 29.74 30.52 31. 31 32.11 32.91 33.73 34.55 35.38 36.22 37.06 37.92 38.77 39.64 40.51 41.39 42.28 43.17 44.07 44.97 45.88 46.80 47.72 48.65 49.58 50.52 51.46 52.40 53.35 54.31 55.26 56.22 57.19 58.16 59.13 60.10 ANAL ACCRUAL (7) 9,085 3,308 11,882 1,882 3,580 2,260 2,057 8,795 2,727 5,673 16,642 26,222 14,103 4,392 1,706 15,631 26,136 9,000 3,399 4,243 11,508 530 449 30,190 3,006 1,533 4,823 14,244 2,188 18,200 5,618 6,195 4,713 11,060 15,234 7,831 93,466 20,262 51,483 3,832 69,319 43,665 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 421 of 491 IDAHO POWER COMPANY ACCOUNT 352.00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6 ) ANAL ACCRUAL (7) SURVIVOR CURVE. .IOWA 65-R3 NET SALVAGE PERCENT. .-35 2007 3,373,718.66 275,366 344,913 4,209,607 61. 07 68,93120081,041,187.48 63,786 79,896 1,325,707 62.05 21,36520091,964,779.71 80,396 100,701 2,551,752 63.03 40,485 2010 12,661,734.39 257,768 322,871 16,770,470 64.02 261,95720112,315,711.33 12,036 15,076 3,111,134 64.75 48,048 57,730,658.85 16,785,360 20,984,305 56,952,084 1,061,178 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE,PERCENT . .53.7 1. 84 ~i-380 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 422 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 48-R1.5 NET SALVAGE PERCENT.. - 5 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 8,925.93 1,265.05 478.11 101,021.93 136,999.42 194,879.42 801,561. 47 442,214.21 614,529.45 696,515.91 717,900.68 200,439.37 970,182.74 747,595.57 1,359,655.49 96,917.46 1,431,957.97 2,655,456.57 918,247.59 467,973.32 577,302.67 250,545.26 4,227,740.53 1,372,906.88 1,851,155.41 969,736.61 1,256,835.97 1,575,979.20 359,827.90 1,620,903.10 979,176.39 3,339,439.19 5,104,915.56 8,902,659.68 4,230,482.82 1,926,942.02 885,858.79 10,695,578.22 7,754,651.55 4,743,149.06 1,048.11 610,825.90 7,816 1,099 412 86,427 116,248 163,997 668,582 365,656 503,435 565,269 576,970 159,424 763,591 582,028 1,046,630 73,736 1,076,290 1,970,944 672,704 338,123 411,309 175,875 2,923,343 934,299 1,239,117 638,304 812,697 1,000,446 224,092 989,257 585,400 1,954,088 2,921,288 4,977,700 2,308,911 1,025,565 459,262 5,395,288 3,803,145 2,257,722 484 272,979 ALLOC. BOOK RESERVE (4 ) 9,318 1,310 491 103,039 138,592 195,519 797,090 435,939 600,200 673,919 687,869 190,067 910,361 693,899 1,247,802 87,909 1,283,163 2,349,779 802,004 403,114 490,367 209,680 3,485,238 1,113,880 1,477,287 760,992 968,905 1, 192,741 267,165 1,179,402 697,920 2,329,683 3,482,788 5,934,462 2,752,706 1,222,689 547,537 6,432,315 4,534,146 2,691,678 577 325,448 ~i-381 FUTURE BOOK ACCRUALS (5 ) 54 18 11 3,034 5,257 9,104 44,550 28,386 45,056 57,423 65,927 20,394 108,331 91,076 179,836 13,854 220,393 438,450 162,156 88,258 115,801 53,393 953,890 327,672 466,426 257,231 350,773 462,037 110,654 522,546 330,215 1,176,728 1,877,373 3,413,331 1,689,301 800,600 382,615 4,798,042 3,608,238 2,288,629 524 315,919 REM. LIFE (6) 7.97 8.27 B.58 8.89 9.21 9.53 9.87 10.20 10.55 10.90 11.26 11.64 12.02 12.41 12.81 13 .22 13.64 14.07 14.51 14.97 15.43 15.91 16.39 16.89 17.40 17.91 18.44 18.98 19.53 20.10 20.67 21. 25 21.84 22.44 23.05 23.67 24.30 24.94 25.58 26.24 26.90 27.57 ANAL ACCRUAL (7) 7 2 1 341 571 955 4,514 2,783 4,271 5,268 5,855 1,752 9,013 7,339 14,039 1,048 16,158 31,162 11,175 5,896 7,505 3,356 58,200 19,400 26,806 14,362 19,022 24,343 5,666 25,997 15,976 55,375 85,960 152,109 73,289 33,823 15,745 192,383 141,057 87,219 19 11,459 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 423 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 353.00 STATION EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JU 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 48 - R1 . 5 NET SALVAGE PERCENT.. - 5 1985 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 1,179,350.23 97,541.77 15,478,541.83 504,053.19 472,268.74 9,397,221.04 6,371,320.89 1,543,850.21 5,754,902.12 5,553,320.86 4,129,485.05 4,366,693.42 2,336,642.65 10,467,618.71 1,876,538.10 29,891,131.02 10,866,854.58 14,619,863.38 6,745,369.27 11,275,976.85 12,618,872.43 19,637,324.01 25,266,402.98 16,775,922.85 43,092,868.42 17,283,536.12 353,405,849.20 509,518 39,197 5,982,859 187,002 167,876 3,190,324 2,062,693 475,160 1,678,104 1,528,185 1,068,641 1,058,362 527,497 2,189,077 360,813 5,237,644 1,718,604 2,062,848 835,1851,201,264 1,123,452 1,400,455 1,354,077 601,895 772,828 79,487 82,462,999 ALLOC. BOOK RESERVE (4 ) 607,452 46,731 7,132,823 222,946 200,143 3,803,535 2,459,163 566,490 2,000,652 1,821,917 1,274,044 1,261,789 628,887 2,609,839 430,165 6,244,370 2,048,936 2,459,348 995,716 1,432,159 1,339,390 1,669,636 1,614,344 717,585 921,373 94,765 98,313,188 FUTUE BOOK ACCRUALS (5) 630,866 55,688 9,119,646 306,310 295,739 6,063,547 4,230,724 1,054,553 4,041,995 4,009,070 3,061,915 3,323,239 1,824,588 8,381,161 1,540,200 25,141,318 9,361,261 12,891,509 6,086,922 10,407,617 11, 910,426 18,949,554 24,915,379 16,897,134 44,326,139 18,052,948 272,762,954 REM. LIFE (6 ) 28.25 29.63 30.33 31.04 31.75 32.48 33.20 33.93 34.67 35.42 36.17 36.92 37.68 38.44 39.21 39.99 40.77 41.55 42.34 43.13 43.93 44.74 45.55 46.36 47.18 47.79 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 38.6 ~i-382 ANAL ACCRUAL (7 ) 22,332 1,879 300,681 9,868 9,315 186,686 127,431 31,080 116,585 113,187 84,653 90,012 48,423 218,032 39,281 628,690 229,612 310,265 143,763 241,308 271,123 423,548 546,990 364,477 939,511 377,756 7,067,709 2.00 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 424 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 354.00 TOWERS AND FIXTUES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 65-S3 NET SALVAGE PERCENT.. -15 1949 1950 1951 1952 1953 1958 1959 1960 1961 1964 1965 1966 1967 1968 1969 1970 1971 1973 1974 1975 1976 1978 1980 1981 1982 1983 1984 1985 1987 1988 1989 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 243,137.99 51,777.78 26,496.76 158,381.68 98,145.14 50,574.28 94,697.183,471,350.14 793,160.64 24,363.15 2,458,448.56 413,094.82 1,122,362.53 105,484.94 56,808.73 2,256.87 2,228.89 7,612,392.98 48,388.10 41,271.43 926,838.39 97,502.40 6,004,677.31 13,917,597.12 978,053.52 2,686,963.27 2,867,996.51 88,194.56 1,300,894.68 3,290.10 228,912.06 336,326.63 186,249.67 189,052.50 2,449,656.84 528,674.62 661,813.70 361,374.55 246,031.76 755,446.55 809,373.75 10/800,990.40 219,171 46,289 23,482 139,098 85,397 41,723 77,203 2,795,036 630,358 18,556 1,843,769 304,917 814,546 75,229 39,781 1,551 1,501 4,914,462 30,545 25,447 557,532 55,667 3,238,070 7,281,102 495,592 1,317,301 1,357,834 40,273 549,611 1,334 88,815 118,771 62,511 60,140 736,335 149,562 175,522 89,508 56,587 160,391 157,516 1,910,992 ALLOC. BOOK RESERVE (4 ) 237,978 50,261 25,497 151,034 92,725 45,303 83,828 3,034,881 684,450 20,148 2,001,985 331,082 884,443 81,684 43,195 1,684 1,630 5,336,177 33,166 27,631 605,374 60,444 3,515,932 7,905,900 538,119 1,430,340 1,474,351 43,729 596,774 1,448 96,436 128,963 67,875 65,301 799,521 162,396 190,584 97,189 61,443 174,154 171,033 2,074,976 ~i-383 FUTURE BOOK 'ACCRUALS (5) 41,631 9,283 4,974 31, 105 20,142 12,857 25,074 957,172 227,685 7,870 825,231 143,977 406,274 39,624 22,135 911 933 3,418,075 22,480 19,831 460,490 51,684 3,389,447 8,099,337 586,643 1,659,668 1,823,845 57/695 899,255 2,336 166,813 257,813 146,312 152,109 2,017,584 445,580 570,502 318,392 221,494 694,610 759,747 10/346/163 REM. LIFE (6 ) 14.05 14.47 14.91 15.36 15.82 18.37 18.92 19.49 20.08 21.95 22.61 23.28 23.98 24.69 25.42 26.16 26.93 28.51 29.32 30.15 31. 00 32.73 34.52 35.43 36.36 37.29 38.24 39.19 41.12 42.09 43.07 45.04 46.03 47.02 48.01 49.01 50.01 51.00 52.00 53.00 54.00 55.00 ANAL ACCRUAL (7) 2,963 642 334 2,025 1,273 700 1,325 49,111 11,339 359 36,498 6,185 16,942 1,605 871 35 35 119,890 767 658 14,855 1,579 98,188 228,601 16,134 44,507 47,695 1,472 21/869 56 3,873 5,724 3,179 3,235 42,024 9,092 11,408 6,243 4,260 13,106 14,069 188,112 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 425 of 491 IDAHO POWER COMPANY ACCOUNT 354.00 TOWERS AND FIXTUES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTE BOOK ACCRUALS (5) REM. LIFE (6 ) ANAL ACCRUAL (7 ) SURVIVOR CURVE. .IOWA 65-83 NET SALVAGE PERCENT, .-15 2002 2,458,301.86 391,433 425,022 2,402,025 56.00 42,893 2003 17,849,894.56 2,526,510 2,743,312 17,784,067 57.00 312,001 2004 7,716,883.56 955,686 1,037,694 7,836,722 58.00 135,116 2005 2,395,159.93 254,262 276,080 2,478,354 59.00 42,00620064,161,791.06 368,144 399,735 4,386,325 60.00 73,105200723,794,426.84 1,683,955 1,828,456 25,535,135 61.00 418,609 2008 15,244,442.49 809,061 878,487 16,652,622 62.00 268,59120092,383,728.98 84,349 91,587 2,649,701 63.00 42,05920105,352,585.66 94,671 102,795 6,052,679 64.00 94,573 144,657,948.42 37,957,098 41,214,232 125,142,409 2,461,791 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .50.8 1. 70 ~i-384 Exhibit No. 1 Case No. IPC-E-12..8 J. Spanos, IPC Pag 426 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 355.00 POLES AND FIXTURES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 60 - R2 NET SALVAGE PERCENT.. -80 1917 1941 1942 1943 1944 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 5,912.38 101,693.74 16,041.98 2,847.79 504,553.25 30,349.13 32,843.57 92,918.10 7,004.97 89,095.72 2,483,693.93 561,602.09 663,789.27 147,012.09 179,291.41 735,017.50 94,309.38 413,743.84 583,132.20 530,868.53 2,066,648.36 191,111.96 649,636.15 197,720.89 158,130.63 2,550,826.79 871,347.38 160,985.37 912,119.12 171,396.23 47,001.39 235,993.83 291,681.61 1,120,302.95 570,364.72 1,848,474.50 792,093.79 1,798,174.21 268,577.23 2,562,128.17 4,289,957.89 1,111,787.44 9,802 145,463 22,759 4,007 703,697 41,572 44,565 124,826 9,316 117,259 3,233,755 723,115 844,941 184,926 222,786 901,871 114,218 494,380 687,166 616,654 2,365,267 215,403 720,702 215,852 169,736 2,691,393 902,895 163,771 910,386 167,677 45,065 221,527 267,853 1,005,913 500,321 1,582,675 661,314 1,462,995 212,631 1,973,080 3,208,460 806,491 ALLOC. BOOK RESERVE (4) 9,603 142,508 22,297 3,926 689,402 40,728 43,660 122,290 9,127 114,877 3,168,064 708,426 827,777 181,169 218,260 883,550 111,898 484,337 673,207 604,127 2,317,219 211,027 706,062 211,467 166,288 2,636,720 884,554 160,444 891,892 164,271 44,150 217,027 262,412 985,479 490,157 1,550,525 647,880 1,433,276 208,312 1,932,999 3,143,283 790,108 111-385 FUTUE BOOK ACCRUALS (5) 1,039 40,541 6,579 1,200 218,794 13,900 15,458 44,963 3,482 45,495 1,302,585 302,458 367,044 83,453 104,465 439,482 57,859 260,402 376,431 351,436 1,402,748 132,975 463,283 144,431 118,347 1,954,768 683,871 129,330 749,922 144,242 40,453 207,762 262,615 1,031,066 536,499 1,776,729 777,889 1,803,438 275,127 2,678,832 4,578,641 1,211,109 REM. LIFE (6) 4.74 12.32 12.71 13.10 13 .51 14.34 14.77 15.22 15.67 16.13 16.60 17.08 17.57 18.07 18.58 19.10 19.63 20.17 20.72 21.28 21.85 22.43 23.02 23.61 24.22 24.83 25.46 26.09 26.73 27.39 28.04 28.71 29.39 30.07 30.76 31.46 32.17 32.88 33.61 34.33 35.07 35.82 ANAL ACCRUAL (7) 219 3,291 518 92 16,195 969 1,047 2,954 222 2,821 78,469 17,708 20,890 4,618 5,622 23,010 2,947 12,910 18,168 16,515 64,199 5,928 20,125 6,117 4,886 78,726 26,861 4,957 28,055 5,266 1,443 7,237 8,936 34,289 17,441 56,476 24,181 54,849 8,186 78,032 130,557 33,811 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 427 of 491 YEAR (1) IDAHO POWER COMPAN ACCOUNT 355.00 POLES AN FIXTURES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 60-R2 NET SALVAGE PERCENT.. -80 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2,598,952.62 3,558,094.07 2,063,193.32 1,266,711.25 978,117.37 267,266.22 544,727.34 3,437,131.70 1,642,760.17 2,838,240.46 1,116,709.10 2,333,857.48 2,361,675.60 4,338,528.49 1,468,810.32 829,237.02 1,879,791.72 1,024,280.47 1,828,572.23 708,805.71 1,160,320,19 1,285,327.25 2,730,517.61 1,692,240.25 11,364,848.37 5,317,344.10 2,438,869.19 6,886,404.05 1,992,490.95 102,096,006.10 1,826,804 2,420,927 1,356,149 803,341 597,428 156,991 307,066 1,854,999 847,171 1,394,711 521,615 1,032,718 986,236 1,703,766 539,797 283,853 595,518 298,367 485,486 169,688 247,851 240,613 439,051 227,447 1,223,926 430,705 132,445 185,933 13,736 51,042,823 ALLOC. BOOK RESERVE (4) 1,789,694 2,371,748 1,328,600 787,022 585,292 153,802 300,828 1,817,317 829,962 1,366,379 511,019 1,011,739 966,202 1,669,155 528,832 278,087 583,421 292,306 475,624 166,241 242,816 235,725 430,132 222,827 1,199,062 421,956 129,754 182,156 13,457 50,005,940 FUTE BOOK ACCRUALS (5 ) 2,888,421 4,032,821 2,385,148 1,493,058 1,175,319 327,277 679,681 4,369,520 2,127,006 3,742,454 1,499,057 3,189,204 3,284,814 6,140,196 2,115,027 1,214,540 .2,800,204 1,551,399 2,815,806 1,109,609 1,845,760 2,077,864 4,484,800 2,823,205 19,257,665 9,149,263 4,260,211 12,213,371 3,573,027 133,766,871 REM. LIFE (6 ) 36.57 37.32 38.09 38.86 39.64 40.42 41. 21 42.01 42.81 43.62 44.43 45.25 46.08 46.91 47.75 48.59 49.44 50.29 51.15 52.02 52.88 53.76 54.64 55.52 56.41 57.30 58.19 59.10 59.77 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 43.2 ~i-386 ANAL ACCRUAL (7 ) 78,983 108,061 62,619 38,421 29,650 8,097 16,493 104,011 49,685 85,797 33,740 70,480 71,285 130,893 44,294 24,996 56,638 30,849 55,050 21,330 34,905 38,651 82,079 50,850 341,387 159,673 73,212 206,656 59,780 3,098,308 3.03 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 428 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AN DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 65-R2 NET SALVAGE PERCENT.. -40 1941 1942 1943 1944 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 291,688.63 4,593.82 1,399.02 221,284.90 115,441.62 2,511.40 1,000.24 157,396.66 261,378.17 3,107,311.46 893,555.80 505,301.72 84,460.29 192,430.03 935,786.16 157,106.86 812,661.51 911,891.07 3,211,902.05 4,529,691.22 279,247.62 507,165.70 195,323.09 2,759,384.62 3,462,677.40 2,055,245.13 219,391.18 883,236.84 166,362.96 105,491.89 218,087.31 7,001,086.40 818,612.85 1,431,871.35 3,119,010.54 112,942.37 959,542.16 271,454.39 6,245,787.41 10,285,596.88 3,296,153.84 1,438,527.39 309,601 4,833 1,458 228,536 116,911 2,517 992 154,418 253,560 2,980,260 846,812 472,997 78,078 175,610 842,500 139,516 711,511 787,002 2,730,509 3,791,306 230,056 411,052 155,657 2,160,962 2,663,256 1,551,981 162,552 641,661 118,424 73,549 148,762 4,670,033 533,708 911,641 1,937,423 68,380 565,863 155,758 3,482,863 5,569,424 1,730,850 731,523 ALLOC. BOOK RESERVE (4 ) 281,184 4,389 1,324 207,560 106,180 2,286 901 140,245 230,287 2,706,717 769,087 429,583 70,912 159,492 765,171 126,711 646,205 714,767 2,479,889 3,443,321 208,940 373,324 141,370 1,962,618 2,418,809 1,409,532 147,632 582,766 107,554 66,798 135,108 4,241,394 484,722 827,966 1,759,597 62,104 513,925 141,462 3,163,188 5,058,234 1,571,984 664,380 ~i-387 FUTUE BOOK ACCRUALS (5) 127,180 2,042 635 102,239 55,438 1,230 499 80,110 135,642 1,643,519 481,891 277,839 47,332 109,910 544,930 93,239 491,521 561,880 2,016,774 2,898,247 182,007 336,708 132,082 1,900,520 2,428,939 1,467,811 159,516 653,766 125,354 80,891 170,214 5,560,127 661,336 1,176,654 2,607,018 96,015 829,434 238,574 5,580,914 9,341,602 3,042,631 1,349,558 REM. LIFE (6) 15.72 16.15 16.60 17.05 17.98 18.46 18.95 19.45 19.96 20.47 21.00 21.54 22.08 22 ó 63 23.20 23.77 24.35 24.93 25.53 26.14 26.75 27.37 28.00 28.64 29.29 29.94 30.60 31.27 31. 95 32.63 33.33 34.03 34.73 35.44 36.16 36.89 37.62 38.36 39.11 39.86 40.62 41.39 ANAL ACCRUAL (7) 8,090 126 38 5,996 3,083 67 26 4,119 6,796 80,289 22,947 12,899 2,144 4,857 23,488 3,923 20,186 22,538 78,996 110,874 6,804 12,302 4,717 66,359 82,927 49,025 5,213 20,907 3,923 2,479 5,107 163,389 19,042 33,201 72,097 2,603 22,048 6,219 142,698 234,360 74,90S 32,606 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 429 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 356.00 OVERHEAD CONDUCTORS AND DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 65-R2 NET SALVAGE PERCENT.. - 4 0 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 226,997.33 529,123.21 268.22 735,449.73 220,288.50 281,481.48 3,111,814.53 1,084,567.05 1,222,115.68 792,889.44 2,711,376.16 1,607,025.77 3,210,260.88 658,609.54 728,217.45 3,181,356.68 1,175,949.92 11,081,546.11 3,015,947.65 4,819,519.06 7,370,571.13 4,138,029.83 2,967,467.46 19,697,214.14 11,579,219.55 5,091,771.71 14,576,603.37 1,735,350.58 169,782,024.11 111,667 251,403 123 324,570 93,422 114,526 1,211,772 403,422 433,267 266,921 864,295 483,535 907,862 174,342 179,433 725,629 246,439 2,117,063 519,684 740,114 992,153 478,638 286,990 1,527,164 673,401 198,528 282,640 8,600 57,921,908 ALLOC. BOOK RESERVE (4) 101,418 228,328 112 294,779 84,847 104,014 1,100,549 366,394 393,500 242,422 784,966 439,154 824,534 158,340 162,964 659,027 223,820 1,922,748 471,985 672,182 901,088 434,706 260,649 1,386,993 611,593 180,306 256,697 7,811 52,605,544 FUTURE BOOK ACCRUALS (5) 216,378 512,444 264 734,851 223,557 290,060 3,255,991 1,152,000 1,317,462 867,623 3,010,961 1,810,682 3,669,831 763,713 856,540 3,794,872 1,422,510 13,591,417 3,750,342 6,075,145 9,417,712 5,358,536 3,893,805 26,189,107 15,599,314 6,948,174 20,150,548 2,421,680 185,089,290 REM. LIFE (6 ) 42.16 42.94 43.72 44.51 45.31 46.11 46.92 47.73 48.54 49.37 50.20 51.03 51.87 52.71 53.56 54.41 55.27 56.13 57.00 57.87 58.75 59.63 60.51 61.40 62.30 63.19 64.10 64.77 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 48.5 ~i-388 ANAL ACCRUAL (7) 5,132 11,934 6 16,510 4,934 6,291 69,395 24,136 27,142 17,574 59,979 35,483 70,751 14,489 15,992 69,746 25,737 242,142 65,795 104,979 160,301 89,863 64,350 426,533 250,390 109,957 314,361 37,389 3,815,704 2.25 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 430 of 491 YEAR (i) IDAHO POWER COMPANY ACCOUNT 359. 00 ROADS AN TRAI LS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SURVIVOR CUVE.. IOWA 65 -R2. 5 NET SALVAGE PERCENT.. 0 1949 1951 1952 1953 1954 1955 1956 1961 1966 1988 1989 1991 1995 149.57 256,015.40 1,998.24 730.24 1,162.26 775.78 1,384.58 20,853.83 8.67 2,747.75 17,690.02 14,604.35 230.37 318,351.06 111 185,158 1,429 516 811 535 942 13,202 5 878 5,424 4,091 52 213,154 ALLOC. BOOK RESERVE (4) 134 224,326 1,731 625 983 648 1,141 15,995 6 1,064 6,572 4,956 63 258,244 FUTURE BOOK ACCRUALS (5) 16 31,689 267 105 179 128 244 4,859 3 1,684 11,118 9,648 167 60,107 REM. LIFE (6) 16.97 17.99 18.53 19.07 19.63 20.20 20.78 23.85 27.18 44.22 45.07 46.79 50.30 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 24.0 ~i-389 ANAL ACCRUAL (7) 1 1,761 14 6 9 6 12 204 38 247 206 3 2,507 0.79 Exhibit No. 1 Case No. IPC-E-12-08 J. Spans,IPC Page 431 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 361.00 STRUCTURES AND IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 65 - R2 . 5 NET SALVAGE PERCENT.. - 4 0 1909 1919 1921 1922 1923 1924 1929 1931 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1,707.90 785.94 84.70 144.15 36,687.58 79.19 .20,949.75 2,313.83 3,731.97 740.33 7,374.75 7,788.39 2,364.68 515.56 184.75 25.40 50.59 4,480.78 8,125.90 7,997.34 15,026.69 38,235.20 47,246.98 128,044.37 59,439.05 94,053.40 32,840.17 39,691.36 119,617.44 82,086.19 25,676.16 91,297.84 67,103.34 36,685.80 70,965.14 99,637.47 144,197.02 133,264.66 115,815.20 85,030.83 118,577.41 50,445.81 2,213 981 105 178 45,049 97 25,038 2,738 4,292 846 8,374 8,783 2,647 573 204 28 55 4,818 8,658 8,440 15,704 39,554 48,368 129,648 59,492 93,044 32,091 38,299 113,928 77,138 23,797 83,395 60,399 32,515 61,904 85,520 121,685 110,536 94,342 68,001 93,016 38,799 ALLOC. BOOK RESERVE (4) 2,265 1,004 107 182 46,104 99 25,625 2,802 4,393 866 8,570 8,989 2,709 586 209 29 56 4,931 8,861 8,638 16,072 40,481 49,501 132,686 60,886 95,224 32,843 39,196 116,597 78,945 24,355 85,349 61,814 33,277 63,354 87,524 124,536 113,126 96,552 69,594 95,195 39,708 111-390 FUTURE BOOK ACCRUALS (5) 126 96 12 20 5,259 12 3,705 437 832 170 1,755 1,915 602 136 50 7 15 1,342 2,515 2,558 4,965 13,048 16,645 46,576 22,329 36,451 13,133 16,372 50,867 35,976 11,592 42,468 32,131 18,083 35,997 51,968 77,340 73,445 65,589 49,449 70,813 30,916 REM. LIFE (6) 4.84 7.05 7.51 7.75 7.99 8.23 9.51 10.06 11.60 11.93 12.28 12.64 13.02 13 .40 13.80 14.22 14.64 15.08 15.53 16.00 16.48 16.97 17.47 17.99 18.53 19.07 19.63 20.20 20.78 21.37 21.97 22.59 23.21 23.85 24.50 25.15 25.82 26.49 27.18 27.87 28.58 29.29 ANAL ACCRUAL (7) 26 14 2 3 658 1 390 43 72 14 143 152 46 10 4 1 89 162 160 301 769 953 2,589 1,205 1,911 669 810 2,448 1,683 528 1,880 1,384 758 1,469 2,066 2,995 2,773 2,413 1,774 2,478 1,056 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos. IPC Page 432 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 361. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 65-R2.5 NET SALVAGE PERCENT.. -40 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 155,019.24 168,423.88 213,101.76 276,474.98 285,444.55 309,917.85 317,250.47 288,477.70 494,251.61 153,423.77 252,164.78 141,783.03 291,391.30 324,702.38 200,999.08 331,226.44 281,983.28 76,016.50 59,454.48 336,988.34 198,461.78 1,077,871.89 383,740.76 515,148.04 371,515.42 212,902.65 190,207.71 316,734.58 794,263.31 924,624.42 608,614.44 1,385,059.98 2,011,801.97 1,161,507.47 1,241,671.53 1,367,179.15 737,085.66 1,175,996.27 2,885,279.64 116,828 124,317 153,900 195,259 196,982 208,798 208,475 184,786 308,292 93,087 148,654 81,139 161,735 174,492 104,464 166,224 136,470 35,414 26,610 144,658 81,515 422,752 143,319 182,739 124,751 67,407 56,619 88,140 205,625 221,459 133,969 277,444 363,557 186,873 175,173 165,489 74,453 95,244 175,875 ALLOC. BOOK RESERVE (4) 119,565 127,230 157,506 199,834 201,597 213,690 213,360 189,115 315,515 95,268 152,137 83,040 165,524 178,580 106,912 170,119 139,667 36,244 27,233 148,047 83,425 432,657 146,677 187,021 127,674 68,986 57,946 90,205 210,443 226,648 137,108 283,944 372,075 191,251 179,277 169,367 76,197 97,476 179,996 ~i-391 FUTURE BOOK ACCRUALS (5) 97,462 108,563 140,836 187,231 198,025 220,195 230,791 214,754 376,437 119,525 200,894 115,456 242,424 276,003 174,487 293,598 255,110 70,179 56,003 323,737 194,421 1,076,364 390,560 534,186 392,448 229,078 208,345 353,223 901,526 1,067,826 714,952 1,655,140 2,444,448 1,434,859 1,559,063 1,744,684 955,723 1,548,919 3,859,395 REM. LIFE (6) 30.01 30.73 31. 47 32.21 32.96 33.72 34.49 35.26 36.04 36.83 37.63 38.43 39.23 40.05 40.87 41. 70 42.53 43.37 44.22 45.07 45.93 46.79 47.66 48.53 49.41 50.30 51.18 52.08 52.98 53.88 54.78 55.70 56.61 57.53 58.45 59.38 60.31 61. 24 62.17 ANAL ACCRUAL (7 ) 3,248 3,533 4,475 5,813 6,008 6,530 6,692 6,091 10,445 3,245 5,339 3,004 6,180 6,891 4,269 7,041 5,998 1,618 1,266 7,183 4,233 23,004 8,195 11,007 7,943 4,554 4,071 6,782 17,016 19,819 13,051 29,715 43,180 24,941 26,673 29,382 15,847 25,293 62,078 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 433 of 491 IDAHO POWER COMPANY ACCOUNT 361. 00 STRUCTUES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2 ) REM. LIFE (6) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) FUE BOOK ACCRUALS (5) SURVIVOR CURVE..IOWA 65-R2.5 NET SALVAGE PERCENT..-40 2009 2,471,119.92 100,604 102,961 3,356,607 63.11 2010 2,684,247.45 54,340 55,613 3,702,333 64.06 2011 2,029,681.55 10,485 10,731 2,830,823 64.76 31,504,322.02 8,023,708 8,211,701 35,894,350 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 53.3 ~i-392 ANAL ACCRUAL (7) 53,187 57,795 43,713 673,250 2.14 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 434 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30,2011 ORIGINAL CALCULATED ALLOC.BOOK FUTRE BOOK REM.ANAL YEAR COST ACCRUED RESERVE ACCRUALS LIFE ACCRUAL (1)(2)(3 )(4 )(5)(6)(7 ) SURVIVOR CURVE..IOWA 50-R1 NET SALVAGE PERCENT..-5 1916 1,991.84 2,015 2,091 1919 6,746.47 6,683 7,084 1923 5,696.34 5,498 5,981 1924 140.21 134 14719274.05 4 4 1928 3,330.11 3,110 3,497 1929 977.21 906 1,019 7 5.84 119301,497.86 1,379 1,550 23 6.16 419318,898.58 8,134 9,145 199 6.47 3119332,026.81 1,825 2,052 76 7.12 11193420.07 18 20 1 7.45193551. 63 46 52 2 7.78 1936 41,967.98 36,910 41,499 2,567 8.12 316193724,453.81 21,327 23,979 1,698 8.47 20019383,759.18 3,251 3,655 292 8.82 33193923,947.49 20,533 23,086 2,059 9.17 22519401,421.90 1,208 1,358 135 9.53 14194138,735.42 32,627 36,684 3,988 9.89 403194239,635.65 33,078 37,191 4,426 10.26 431194335,627.13 29,448 33,109 4,299 10.64 40419446,463.14 5,291 5,949 837 11.02 76194528,856.48 23,391 26,299 4,000 11.40 351194660,476.93 48,527 54,561 8,940 11.79 758 1947 88,717.62 70,443 79,202 13,952 12.19 1,1451948203,643.88 159,985 179,877 33,949 12.59 2,6971949300,982.18 233,863 262,941 53,090 13.00 4,0841950277,013.93 212,855 239,321 51,544 13.41 3,8441951621,309.65 471,928 530,606 121,769 13.83 8,8051952337,812.42 253,613 285,146 69,557 14.25 4,8811953945,051.50 700,964 788,119 204,185 14.68 13,9091954265,048.49 194,143 218,282 60,019 15.12 3,9701955323,830.18 234,139 263,251 76,771 15.57 4,9311956529,091.23 377,549 424,492 131,054 16.02 8,1811957467,079.91 328,885 369,777 120,657 16.47 7,3261958237,584.43 164,995 185,510 63,954 16.93 3,7781959636,635.71 435,841 490,032 178,435 i 7.40 10,2551960468,417.53 315,957 355,242 136,596 17.88 7,6401961624,330.94 414,830 466,408 189,139 18.36 10,302 1962 284,246.31 185,940 209,059 89,400 18.85 4,7431963458,993.50 295,431 332,164 149,779 19.35 7,7411964606,108.14 383,757 431,472 204,942 19.85 10,325 1965 824,901.94 513,452 577,293 288,854 20.36 14,187 ~i-393 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 435 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 50-Rl NET SALVAGE PERCENT.. - 5 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 1,037,570.65 629,852.58 2,010,989.69 536,315.13 552,103.36 958,137.45 1,468,036.14 849,594.93 1,331,168.93 1,944,847.24 2,967,155.43 3,125,254.17 2,186,323.70 1,562,074.93 2,303,881.97 1,981,185.46 878,265.42 971,404.89 580,980.08 1,172,440.42 859,772.60 765,251.22 476,424.15 1,532,357.34 3,857,246.62 5,743,092.42 4,015,202.72 4,290,996.50 1,554,250.51 3,20B,322.42 1,852,425.21 2,890,424.57 6,104,410.26 7,170,601.21 5,780,647.91 9,049,497.86 9,883,432.55 9,833,541.23 6,725,266.80 8,486,605.76 6,554,737.81 9,347,052.89 634,495 378,289 1,185,418 310,060 312,811 531,795 797,540 451,568 691,316 986,329 1,468,653 1,508,185 1,027,528 714,134 1,023,753 854,565 367,396 393,506 227,541 443,429 313,619 268,695 160,679 495,564 1,193,972 1,696,912 1,129,878 1,146,211 393,303 766,051 415,462 606,989 1,193,473 1,296,516 961,437 1,372,085 1,351,164 1,199,790720,276 780,598 503,797 577,087 ALLOC. BOOK RESERVE (4 ) 713,386 425,324 1,332,809 348,612 351,705 597,916 896,703 507,714 777,272 1,108,966 1,651,260 1,695,707 1,155,287 802,927 1,151,043 960,818 413,077 442,433 255,833 498,563 352,613 302,104 180,657. 557,181 1,342,426 1,907,900 1,270,363 1,288,727 442,205 861,299 467,119 682,460 1,341,865 1,457,720 1,080,978 1,542,685 1,519,162 1,348,967 809,832 877,655 566,437 648,840 ~i-394 FUTURE BOOK ACCRUALS (5) 376,063 236,021 778,730 214,519 228,004 408,128 644,735 384,361 620,455 933,124 1,464,253 1,585,810 1,140,353 837,252 1,268,033 1,119,427 509,102 577,542 354,196 732,499 550,148 501,410 319,588 1,051,794 2,707,683 4,122,347 2,945,600 3,216,819 1,189,758 2,507,440 1,477,927 2,352,486 5,067,766 6,071,411 4,988,702 7,959,288 8,858,442 8,976,251 6,251,698 8,033,281 6,316,038 9,165,566 REM. LIFE (6) 20.88 21.40 21.93 22.47 23.02 23.57 24.13 24.69 25.27 25.85 26.43 27.02 27.62 28.23 28.84 29.46 30.08 30.71 31.35 31.99 32.63 33.28 33.94 34.60 35.26 35.93 36.60 37.28 37.95 3B.63 39.32 40.00 40.69 41. 39 42.08 42.78 43.49 44.19 44.90 45.62 46.34 47.06 ANAL ACCRUAL (7) 18,OLL 11,029 35,510 9,547 9,905 17,316 26,719 15,567 24,553 36,098 55,401 58,690 41,287 29,658 43,968 37,998 16,925 18,806 11,298 22,898 16,860 15,066 9,416 30,399 76,792 114,733 80,481 86,288 31,351 64,909 37,587 58,812 124,546 146,688 118,553 186,052 203,689 203,129 139,236 176,091 136,298 194,763 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos,lPC Page 436 of 491 IDAHO POWER COMPANY ACCOUNT 362.00 STATION EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 YEAR (1 ) ORIGINAL COST (2) REM. LIFE (6) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) SURVIVOR CURVE. .IOWA 50-Rl NET SALVAGE PERCENT. .-5 2008 15,852,304.51 735,705 827,180 15,817,740 47.79 2009 14,812,449.25 460,371 517,612 15,035,460 48.52 2010 3,711,193.51 57,672 64,842 3,831,911 49.26 2011 4,032,706.91 16,091 18,092 4,216,250 49.81 186,275,323.09 40,355,621 45,372,482 150,216,607 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 40.2 111-395 ANAL ACCRUAL (7) 330,984 309,882 77,790 84,647 3,732,228 2.00 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 437 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 364.00 POLES, TOWERS AN FIXTUES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 44 -R1. 5 NET SALVAGE PERCENT.. -45 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 282.95 2,652.48 9,487.69 19,456.73 13,765.14 6,596.75 3,020.27 1,406.72 4,019.44 12,908.75 4,498.83 23,375.13 25,637.02 36,093.39 66,717.87 63,965.40 21,876.91 21,381. 73 36,934.56 132,830.30 156,760.12 270,505.97 317,218.96 319,980.96 460,559.63 352,871.78 326,581.99 368,026.73 360,650.20 195/782.73 338,095.24 370,761.00 498,864.48 470,817.50 443,865.65 579,728.64 655,553.36 579,701. 51 654,637.61 879,552.44 882,827.78 976/241.13 400 3,718 13,191 26,834 18,839 8,963 4,078 1,888 5,363 17,131 5,938 30,674 33,440 46,793 85,968 81,873 27,814 26,994 46,289 165,245 193,568 331,437 385,641 385,835 550,791 418,403 383,784 428,608 416,095 223,752 382,498 415,175 552,541 515,735 480,657 620,141 692,610 604,443 673,304 891,878 882,104 960,649 ALLOC. BOOK RESERVE (4 ) 410 3,846 13,757 28,212 19,959 9,565 4,379 2,040 5,828 18,718 6,523 33,808 36,857 51,574 94,752 90,239 30,656 29,752 51,019 182,129 213,346 365,303 425,045 425,259 607,070 461,155 422,998 472,403 458,611 246,615 421,581 457,597 608,999 568,432 529,770 683,506 763,380 666,204 742,101 983,009 972,236 1,058,807 ~i-396 FUTUE BOOK ACCRUALS (5) 86 317 761 1,989 2,511 1,066 1,252 2,536 10,475 13,956 26,931 34,922 38,713 60,741 50,509 50,546 61,236 64,332 37,270 68,657 80,006 114,354 114,253 113,835 157,101 187,172 174,363 207,124 292,342 307,864 356,743 REM. LIFE (6) 4.18 4.42 4.66 4.90 5.16 5.42 5.69 5.97 6.25 6.53 6.82 7.11 7.41 7.71 8.02 8.34 8.66 B.99 9.32 9.67 10.02 10.39 10.76 11.14 11.54 11. 94 12.36 12.79 13.23 13.68 14.14 ANAL ACCRUAL (7) 21 72 163 406 487 197 220 425 1,676 2,137 3,949 4,912 5,224 7,878 6,298 6, 061 7, 071 7,156 3,999 7,100 7,985 11,006 10,618 10,219 13,614 15,676 14,107 16,194 22,097 22,505 25,229 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 438 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 364.00 POLES, TOWERS AND FIXTURES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 44 -R1. 5 NET SALVAGE PERCENT.. - 4 5 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 833,286.13 975,043.90 1,144,620.12 1,383,377.13 1,800,955.79 2,275,409.12 3,043,607.56 3,102,555.01 3,132,597.71 3,342,368.92 3,398,422.07 4,041,912.06 4,886,820.72 3,882,623.38 4,047,538.71 3,308,555.75 3,580,602.02 3,933,360.43 3,226,275.86 3,199,286.53 3,049,179.20 3,247,314.90 3,138,796.49 6,480,194.12 7,928,284.53 7,474,071.19 8,144,230.28 8,141,916.36 8,400,577.67 13,151,003.28 64,672.52 5,046,716.65 6,303,213.62 9,081,872.83 6,837,579.42 4,309,881.46 5,779,978.25 5,8BO,899.80 5,215,209.94 11,159,948.44 8,615,420.99 806,795 928,296 1,070,888 1,271,016 1,623,812 2, Ol1, 115 2,635,890 2,629,718 2,596,314 2,706,298 2,685,603 3,114,180 3,666,948 2,834,100 2,869,086 2,275,506 2,385,925 2,535,434 2,008,402 1,920,949 1,761,494 1,802,125 1,669,491 3,295,088 3,843,347 3,445,752 3,558,801 3,359,334 3,261,176 4,784,591 21,910 1,583,266 1,819,615 2,391,307 1,624,588 913,277 1,076,200 941,841 697,751 1,198,919 695,575 ALLOC. BOOK RESERVE (4) 889,232 1,023,148 1,180,310 1,400,886 1,789,731 2,216,608 2,905,221 2,898,419 2,861,601 2,982,823 2,960,014 3,432,382 4,041,631 3,123,684 3,162,245 2,508,014 2,629,715 2,794,501 2,213,617 2,117,229 1,941,481 1,986,263 1,840,077 3,631,775 4,236,054 3,797,834 3,922,434 3,702,586 3,594,398 5,273,473 24,149 1,745,042 2,005,540 2,635,647 1,790,586 1,006,594 1,186,164 1,038,077 769,046 1,321,423 766,648 ~i-397 FUTUE BOOK ACCRUALS (5) 319,033 390,666 479,389 605,011 821,655 1,082,735 1,508,010 1,600,286 1,680,666 1,863,612 1,967,698 2,428,390 3,044,259 2,506,120 2,706,686 2,289,392 2,562,158 2,908,872 2,464,483 2,521,736 2,479,829 2,722,344 2,711,178 5,764,506 7,259,959 7,039,569 7,886,700 8,103,193 8,586,440 13,795,482 69,626 5,572,697 7,134,120 10,533,069 8,123,904 5,242,734 7,194,804 7,489,228 6,793,008 14,860,502 11,725,712 REM. LIFE (6 ) 14.62 15.11 15.61 16.12 16.64 17.18 17.72 18.28 18.85 19.43 20.02 20.62 21. 23 21.85 22.49 23.13 23.78 24.44 25.11 25.78 26.47 27.16 27.86 28.57 29.29 30.01 30.74 31.48 32.22 32.96 33.72 34.48 35.24 36.01 36.79 37.57 38.35 39.14 39.94 40.74 41.55 ANAL ACCRUAL (7 ) 21,822 25,855 30,710 37,532 49,378 63,023 85,102 87,543 89,160 95,914 98,287 117,769 143,394 114,697 120,351 98,979 107,744 119,021 98,147 97,818 93,685 100,234 97,314 201,768 247,865 234,574 256,561 257,408 266,494 418,552 2,065 161,621 202,444 292,504 220,818 139,546 187,609 191,345 170,080 364,764 282,207 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 439 of 491 IDAHO POWER COMPAN ACCOUNT 364. 00 POLES, TOWERS AN FIXTURES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) FUE BOOK ACCRUALS (5 ) REM. LIFE (6 ) ANAL ACCRUAL (7 ) SURVIVOR CURVE.. IOWA 44 -Rl. 5 NET SALVAGE PERCENT.. -45 2009 7,954,763.38 429,887 473,812 11,060,595 42.36 261,109 2010 9,408,934.03 254,305 280,289 13,362,665 43.18 309,464 2011 4,147,223.32 28,684 31,615 5,981,859 43.79 136,603 22B,467,595.06 101,075,681 111,399,468 219,878,545 7/033,582 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE,PERCENT . .31.3 3.08 1I-398 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 44 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 45 - RO . 5 NET SALVAGE PERCENT.. -35 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 221.86 1,398.41 746.99 636.27 2,011.28 1,586.85 587.25 3,310.67 6,048.30 10,069.38 25,198.27 19,489.73 9,944.12 4,289.94 4,416.60 4,459.12 14,013.24 19,137.53 30,574.25 32,783.62 39,728.41 98,782.83 76,784.63 30,008.87 29,389.67 24,335.12 58,570.25 118,543.88 212,532.90 301,517.64 319,896.38 397,868.64 312,782.15 307,750.59 330,702.98 314,651.52 235,789.25 347,394.81 343,858.75 412,350.64 379,241.09 341,767.46 300 1,888 998 849 2,655 2,072 758 4,229 7,641 12,582 31,145 23,832 12,031 5,135 5,231 5,225 16,248 21,960 34,708 36,823 44,146 108,611 83,504 32,284 31,265 25,596 60,919 121,876 215,890 302,665 317,175 389,715 302,428 293,778 311,523 292,435 216,101 313,904 306,276 361,838 327,777 290,775 ALLOC. BOOK RESERVE (4) 300 1,888 1,008 859 2,692 2,101 769 4,288 7,748 12,75B 31,581 24,165 12,199 5,207 5,304 5,298 16,475 22,267 35,193 37,338 44,763 110,130 B4,672 32,736 31,702 25,954 61,771 123,5B1 218,910 306,89B 321,611 395,166 306,65B 297,887 315,B80 296,525 219,123 318,294 310,560 366,899 332,361 294,842 ~i-399 FUTRE BOOK ACCRUALS (5) 23 41 24 181 417 836 2,437 2,146 1,226 584 658 722 2,443 3,569 6,082 6,920 B,870 23,227 18,987 7,776 7,974 6,898 17,299 36,453 68,009 100,151 110,249 141,957 115,598 117,576 130,569 128,255 99,192 150,689 153,649 189,774 179,614 166,544 REM. LIFE (6 ) 0.99 1.47 1. 95 2.42 2.89 3.35 3.80 4.24 4.67 5.10 5.52 5.94 6.35 6.75 7.16 7.56 7.96 8.35 8.75 9.14 9.54 9.94 10.33 10.73 11.14 11.54 11.95 12.35 12.77 13 .18 13.60 14.02 14.45 14.88 15.31 15.75 16.19 16.64 ANAL ACCRUAL (7) 23 28 12 75 144 250 641 506 263 115 119 122 385 529 849 915 1,114 2,782 2,170 851 836 694 1,675 3,397 6,105 8,679 9,226 11,494 9,052 8,921 9,601 9,148 6,864 10,127 10,036 12,049 11,094 10,009 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 441 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AN DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 45 -RO. 5 NET SALVAGE PERCENT.. -35 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 504,884.03 568,361.09 524,925.11 535,875.72 841,459.06 979,792.75 994,055.53 776,079.44 927,370.86 1,010,188.52 1,138,389.78 1,263,723.97 1,334,837.15 2,220,101.31 2,352,673.87 1,941,876.40 2,085,884.40 2,385,074.73 2,918,126.06 2,248,169.91 1,629,472.77 2,307,903.14 2,141,317.59 1,683,717.67 2,200,601.00 1,395,324.18 1,489,249.61 1,360,933.72 1,866,555.10 1,210,339.27 2,958,414.51 2,975,823.00 2,913,929.75 2,693,241.16 3,133,021.54 2,642,497.82 2,450,107.81 343,298.76 1,722,728.20 2,516,528.30 4,527,442.06 3,189,509.71 422,738 468,045 425,033 426,340 657,602 751,596 748,232 572,750 670,770 715,521 789,252 856,801 884,599 1,436,618 1,485,721 1,195,419 1,250,899 1,391,684 1,654,577 1,238,292 870,632 1,194,329 1,072,161 814,741 1,027,247 627,475 643,798 565,068 742,524 460,057 1,073,030 1,026,677 953,712 833,015 913,589 722,999 626,997 81 ,670 378,831 508,102 831,238 528,197 ALLOC. BOOK RESERVE (4) 428,651 474,591 430,978 432,303 666,799 762,108 758,697 580,761 680,152 725,529 800,291 868,785 896,971 1,456,711 1,506,501 1,212,139 1,268,394 1,411,149 1,677,718 1,255,611 882,809 1,211,033 1,087,157 826,136 1,041,614 636,251 652,802 572,971 752,909 466,492 1,088,038 1,041,037 967,051 844,666 926,367 733,111 635,766 82,812 384,130 515,208 842,864 535,585 ~i-400 FUE BOOK ACCRUALS (5 ) 252,942 292,696 277,671 291,129 469,171 560,612 583,278 466,946 571,799 638,226 736,535 837,242 905,059 1,540,426 1,669,609 1,409,394 1,547,550 1,808,702 2,261,752 1,779,418 1,316,9791,904,636 1,803,622 1, 446,883 1,929,197 1,247,4371,357,685 1,264,290 1,766,940 1, 167,4662,905,822 2,976,324 2,966,754 2,791,210 3,303,212 2,834,261 2,671,880 380,641 1,941,553 2,882,105 5,269,183 3,770,253 REM. LIFE (6) 17.09 17.55 18.01 18.48 18.95 19.43 19.91 20.40 20.89 21.39 21.89 22.40 22.91 23.43 23.95 24.48 25.01 25.55 26.10 26.64 27.19 27.75 28.31 28.87 29.44 30.01 30.59 31.16 31.74 32.33 32.91 33.50 34.09 34.69 35.28 35.88 36.47 37.07 37.67 38.27 38.88 39.48 ANAL ACCRUAL (7) 14,801 16,678 15,418 15,754 24,758 28,853 29,296 22,890 27,372 29,838 33,647 37,377 39,505 65,746 69,712 57,573 61,877 70,791 86,657 66,795 48,436 68,636 63,710 50,117 65,530 41,567 44,383 40,574 55,669 36, III 88,296 88,845 87,027 80,462 93,628 78,993 73,262 10,268 51,541 75,310 135,524 95,498 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 442 of 491 IDAHO POWER COMPANY ACCOUNT 365.00 OVERHEAD CONDUCTORS AND DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTUE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CURVE..IOWA 45-RO.5 NET SALVAGE PERCENT..-35 2003 1,447,364.69 213,195 216,177 1,737,765 40.09 43,34720042,865,166.09 370,475 375,657 3,492,317 40.69 85,82720052,841,640.84 315,414 319,825 3,516,390 41. 30 85,14320063,380,252.97 312,315 316,683 4,246,659 41. 92 101,30420079,049,109.58 670,553 679,932 11,536,366 42.53 271,252200811,572,548.71 645,696 654,727 14,968,214 43.14 346,96820095,807,204.09 216,063 219,085 7,620,641 43.76 174,1462010484,058.85 9,005 9,131 644,348 44.38 14,51920113,221,436.24 15,482 15,698 4,333,241 44.84 96,638 122,797,760.56 42,283,567 42,874,924 122,902,053 3,658,769 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE,PERCENT . .33.6 2.98 111-401 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 443 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 366.00 UNERGROUN CONDUIT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 60-R2 NET SALVAGE PERCENT.. -20 1947 1949 1950 1951 1952 1953 1954 1955 1956 1957 1959 1960 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 0.10 599.82 1,233.81 1,562.51 327.05 93.60 277.30 35.20 19.59 11.78 58.99 1,315.30 3.95 493.93 21,735.97 64,143.48 56,435.45 34,483.31 25,309.95 118,783.74 105,055.02 168,232.24 372,735.30 372,346.28 196,184.97 122,697.38 255,005.30 335,941.03 532,566.92 546,570.51 628,041.63 487,514.23 320,643.00 573,344.32 84,370.57 269,774.53 482,408.89 318,360.62 576,388.58 571,133.78 635,925.03 1,002,439.95 532 1,083 1,356 281 79 233 29 16 10 46 1,019 3 365 15,819 45,901 39,697 23,821 17,165 79,039 68,517 107,535 233,258 227,952 117,436 71,753 145,558 186,983 288,864 288,478 322,434 243,075 155,063 268,669 38,270 I1S,216 203,961 129,635 225,711 214,634 228,803 344,639 ALLOC. BOOK RESERVE (4) 579 1,179 1,476 306 86 254 32 17 11 50 1,109 3 397 17,224 49,977 43,222 25,936 18,689 86,058 74,601 117,084 253,972 248,195 127,865 78,125 158,484 203,587 314,516 314,095 351,067 264,660 168,833 292,527 41,668 128,714 222,073 141,147 245,754 233,694 249,121 375,244 ~i-402 FUTUE BOOK ACCRUALS (5) 141 302 399 86 26 79 10 7 3 21 469 2 196 8,859 26,995 24,501 15,444 11,683 56,482 51,465 84,795 193,310 198,621 107,557 69,112 147,522 199,542 324,564 341,790 402,583 320,357 215,939 395,486 59,577 195,015 356,818 240,886 445,912 451,667 513,989 827,684 REM. LIFE (6) 15.67 16.13 16.60 17.08 17.57 18.07 18.58 19.10 19.63 20.72 21.28 22.43 23.02 23.61 24.22 24.83 25.46 26.09 26.73 27.39 28.04 28.71 29.39 30.07 30.76 31.46 32.17 32.88 33.61 34.33 35.07 35.82 36.57 37.32 38.09 38.86 39.64 40.42 41. 21 42.01 42.81 ANUAL ACCRUAL (7) 9 19 24 5 1 4 1 1 22 9 375 1,115 987 607 448 2,113 1,879 3,024 6,733 6,758 3,577 2,247 4,689 6,203 9,871 10,169 11,727 9,135 6,028 10,814 1,596 5,120 9,182 6,077 11,032 10,960 12,235 19,334 Exhibit No. 1 Case No. IPC.E-12-08 J. Spanos, IPC Page 44 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 366.00 UNDERGROUND CONDUIT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULTED ACCRUED (3) SURVIVOR CURVE.. IOWA 60-R2 NET SALVAGE PERCENT.. -20 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 1,506,575.97 1,590,621.58 1,764,419.82 1,543,892.90 1,593,380.59 1,877,939.19 1,580,522.70 2,378,907.16 2,897,922.15 3,020,951.81 3,428,413.69 3,159,462.66 3,531,438.28 2,180,297.52 1,924,569.84 2,627,879.39 1,343,192.50 951,153.00 3,123.50 163,152.73 48,352,421.89 493,554 495,320 520,497 429,820 417,153 460,103 360,682 502,425 562,765 534,708 547,175 449,920 440,723 233,719 172,449 188,671 72,532 34,436 56 750 11,373,396 ALLOC. BOOK RESERVE (4) 537,382 539,305 566,718 467,989 454,197 500,961 392,711 547,041 612,739 582,191 595,765 489,874 479,860 254,474 187,763 205,425 78,973 37,493 61 817 12,383,370 FUTURE BOOK ACCRUALS (5) 1,270,509 1,369,441 1,550,586 1,384,682 1,457,860 1,752,566 1,503,916 2,307,648 2,864,768 3,042,951 3,518,331 3,301,481 3,757,866 2,361,883 2,121,721 2,948,030 1,532,858 1,103,891 3,687 194,966 45,639,536 REM. LIFE (6) 43.62 44.43 45.25 46.08 46.91 47.75 48.59 49.44 50.29 51. 15 52.02 52.88 53.76 54.64 55.52 56.41 57.30 58.19 59.10 59.77 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 48.4 111-403 ANAL ACCRUAL (7) 29,127 30,822 34,267 30,050 31,078 36,703 30,951 46,676 56,965 59,491 67,634 62,433 69,901 43,226 38,215 52,261 26,751 18,970 62 3,262 942,975 1. 95 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 445 of 491 YEAR (l ) IDAHO POWER COMPANY ACCOUNT 367.00 UNERGROUN CONDUCTORS AN DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 46 - R2 NET SALVAGE PERCENT.. -15 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 223.87 4,456.62 8,161.74 5,646.97 1,700.70 2,252.48 510.13 1,595.95 209.11 598.31 11 .16 213.23 1,840.56 1,522.28 776.99 9,905.71 14,375.30 77,586.77 63,047.20 80,624.82 126,466.83 269,341.18 236,310.90 416,929.66 640,671.59 929,682.94 837,532.66 528,350.72 898,081.88 1,119,048.14 1,980,615.05 1,748,158.93 3,647,088.36 1,693,238.98 1,113,739.75 1,503,829.41 273,620.22 2,056,780.08 1,893,339.22 1,638,548.75 2,175,771.48 3,348,022.44 222 4,389 7,974 5,472 1,634 2,145 482 1,493 194 549 10 191 1,633 1,335 673 8,469 12,126 64,552 51,683 65,104 100,510 210,557 181,545 314,676 474,577 675,416 596,111 368,262 612,271 745,569 1,288,385 1,108,766 2,253,895 1,018,068 650,980 853,046 150,491 1,094,730 973,641 813,127 1,039,463 1,537,588 ALLOC. BOOK RESERVE (4 ) 257 5,125 9,386 6,494 1,956 2,590 587 1,835 240 679 12 236 2,020 1,651 832 10,476 14,999 79,846 63,928 80,529 124,323 260,443 224,557 389,230 587,015 835,438 737,344 455,512 757,332 922,212 1,593,633 1,371,459 2,787,895 1,259,272 805,212 1,055,152 186,146 1,354,097 1,204,319 1,005,776 1, 285,7361,901,878 ~i-404 FUTUE BOOK ACCRUALS (5 ) 9 1 9 97 100 62 916 1,533 9,379 8,576 12,190 21,114 49,299 47,201 90,239 149,757 233,697 225,819 152,091 275,462 364,693 684,074 638,924 1,406,257 687,953 475,589 674,252 128,517 1,011,200 973,021 878,555 1,216,401 1,948,348 REM. LIFE (6 ) 9.32 9.71 10.10 10.51 10.93 11.36 11.80 12.26 12.72 13 .21 13.70 14 .21 14.73 15.27 15.81 16.37 16.94 17.53 18.12 18.73 19.35 19.98 20.63 21.28 21.95 22.62 23.31 24.00 24.71 25.43 26.15 26.89 27.63 ANAL ACCRUAL (7) 1 1 9 9 5 78 125 737 649 890 1,486 3,347 3,091 5,708 9,148 13,796 12,882 8,394 14,707 18,847 34,238 30,971 66,084 31,342 21,025 28,925 5,355 40,923 38,263 33,597 45,236 70,516 Exhibit NO.1 Case NO.IPC-E-12-08 J. Spanos, IPC Page 446 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 367.00 UNERGROUND CONDUCTORS AND DEVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 46 - R2 NET SALVAGE PERCENT.. - 15 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 3,359,048.03 5,712,506.79 6,729,087.39 9,174,507.79 11,821,125.50 10,974,349.02 11,252,921.87 13,213,801. 69 2,092,193.66 3,654,739.53 6,755,809.36 6,673,919.79 8,102,668.95 7,209,744.59 8,809,681.04 6,759,550.13 7,123,734.39 9,862,778.92 8,777,429.31 8,519,771.09 5,197,350.80 5,452,042.21 196,579,190.92 1,478,836 2,406,365 2,705,130 3,509,263 4,288,048 3,761,414 3,631,852 3,997,122 590,005 954,784 1,624,769 1,463,240 1,606,342 1,274,358 1,367,703 902,424 794,325 882,763 592,520 383,385 116,969 31,349 55,654,970 ALLOC. BOOK RESERVE (4) 1,829,207 2,976,489 3,346,038 4,340,689 5,303,987 4,652,581 4,492,322 4,944,134 729,791 1,180,995 2,009,715 1,809,916 1,986,922 1,576,283 1,691,743 1,116,229 982,519 1,091,910 732,902 474,218 144,682 38,776 68,839,707 FUTURE BOOK ACCRUALS (5) 2,033,698 3,592,894 4,392,412 6,209,995 8,290,307 7,967,920 8,448,538 10,251,738 1,676,232 3,021,955 5,759,466 5,865,092 7,331,147 6,714,923 8,439,390 6,657,254 7,209,776 10,250,286 9,361,142 9,323,519 5,832,271 6,231,073 157,226,363 REM. LIFE (6 ) 28.39 29.15 29.92 30.70 31.49 32.29 33.09 33.90 34.72 35.55 36.38 37.23 38.07 38.93 39.79 40.66 41.54 42.42 43.30 44.20 45.10 45.77 COMPOSITE REMAINING LIFE AN ANUAL ACCRUAL RATE, PERCENT .. 35.3 111-405 ANAL ACCRUAL (7) 71,634 123,255 146,805 202,280 263,268 246,761 255,320 302,411 48,279 85,006 158,314 157,537 192,570 172,487 212,098 163,730 173,562 241,638 216,193 210,939 129,319 136,139 4,449,930 2.26 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 447 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE,. IOWA 35-R1 NET SALVAGE PERCENT.. - 3 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1,683.66 885.83 4,110.50 12,444.36 15,441.48 18,669.82 44,991.17 28,073.00 109,152.81 194,840.67 100,302.99 172,376.28 168,037.38 164,758.14 229,372.52 345,227.63 306,229.73 342,893.91 451,386.48 636,782.13 404,608.93 450,663.49 503,231.29 765,600.21 916,033.48 851,038.59 1,051,020.96 1,062,089.82 1,577,646.72 1,495,869.07 2,087,895.66 2,849,423.10 3,695,001.65 3,737,678.45 3,898,347.23 4,998,531. 80 5,263,659.61 5,859,836.36 3,494,569.75 6,445, 394 .25 5,533,434.07 6,220,706.28 1,712 892 4,100 12,287 15,096 18,076 43,150 26,676 102,791 181,763 92,685 157,763 152,259 147,736 203,516 302,958 265,761 294,048 382,436 532,953 334,352 367,499 404,742 606,969 715,722 654,920 796,141 791,398 1,155,586 1,076,765 1,475,265 1,975,602 2,511,862 2,489,171 2,541,121 3,186,193 3,276,200 3,559,272 2,069,155 3,715,778 3,102,147 3,386,721 ALLOC. BOOK RESERVE (4) 1,734 912 4,234 12,818 15,905 19,230 46,341 28,915 112,427 200,686 103,312 177,548 173,079 169,701 236,254 355,584 315,417 353,181 464,928 654,846 410,823 451,551 497,312 745,791 879,417 804,709 978,229 972,401 1,419,884 1,323,035 1,812,677 2,427,448 3,086,357 3,058,477 3,122,308 3,914,917 4,025,509 4,373,324 2,542,398 4,565,625 3,811,648 4,161,308 ~i-406 FUTUE BOOK ACCRUALS (5) 1,040 5,924 12,632 21,016 42,777 64,097 71,861 104,323 121,552 205,092 217,710 337,856 507,458 719,495 791,332 892,990 1,233,571 1,396,060 1,662,307 1,057,009 2,073,131 1,887,789 2,246,019 REM. LIFE (6) 6.56 6.92 7.29 7.67 8.06 8.45 8.85 9.26 9.68 10.11 10.54 10.99 11.44 11.90 12.37 12.85 13.34 13.85 14.36 14.88 15.41 15.95 16.50 ANAL ACCRUAL (7) 159 856 1,733 2,740 5,307 7,585 8,120 11,266 12,557 20,286 20,656 30,742 44,358 60,462 63,972 69,493 92,472 100,799 115,760 71,036 134,532 118,357 136,122 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, fPC Page 448 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 368.00 LINE TRASFORMERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 35-Rl NET SALVAGE PERCENT.. -3 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 7,965,765.11 4, 125, 172 . 06 4,977,381.02 5,062,262.57 5,615,754.57 8,586,895.74 9,186,923.80 6,956,158.09 9,118,765.82 9,314,859.90 11,681,388.40 10,114,923.35 11,661,319.80 11,159,179.14 8,157,438.68 8,208,687.82 9,276,135.55 5,528,598.40 6,575,836.94 5,010,240.37 20,303,493.91 24,916,606.04 25,791,712.43 39,024,766.57 34,324,622.23 25,779,619.69 17,574,089.85 9,220,277.57 4,205,503 2,108,700 2,459,330 2,413,412 2,578,088 3,790,488 3,887,776 2,814,780 3,520,808 3,421,042 4,066,759 3,327,940 3,610,194 3,234,744 2,203,803 2,053,369 2,134,744 1,160,018 1,246,253 847,826 3,017,479 3,189,792 2,762,808 3,353,511 2,222,375 1,115,226 382,662 51,568 ALLOC. BOOK RESERVE (4 ) 5,167,356 2,590,987 3,021,811 2,965,391 3,167,730 4,657,422 4,776,961 3,458,557 4,326,062 4,203,479 4,996,879 4,089,083 4,435,892 3,974,572 2,707,841 2,523,001 2,622,988 1,425,329 1,531,287 1,041,735 3,707,616 3,919,339 3,394,698 4,120,502 2,730,661 1,370,293 470,182 63,362 421,728,816.68 114,312,237 140,293,216 FUTURE BOOK ACCRUALS (5) 3,037,382 1,657,940 2,104,891 2,248,739 2,616,497 4,187,081 4,685,571 3,706,286 5,066,267 5,390,827 7,034,951 6,329,288 7,575,267 7,519,383 5,694,321 5,931,947 6,931,432 4,269,127 5,241,825 4,118,813 17,204,983 21,744,765 23,170,766 36,075,008 32,623,700 25,182,715 17,631,131 9,433,524 294,087,465 REM. LIFE (6) 17.06 17.63 18.21 18.80 19.40 20.00 20.62 21. 25 21. 88 22.52 23.17 23.82 24.48 25.15 25.82 26.50 27.18 27.87 28.56 29.25 29.95 30.65 31. 36 32.08 32.80 33.53 34.26 34.81 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT 111-407 ANAL ACCRUAL (7) 178,041 94,041 115,590 119,614 134,871 209,354 227,234 174,413 231,548 239,380 303,623 265,713 309,447 298,981 220,539 223,847 255,020 153,180 183,537 140,814 574,457 709,454 738,864 1,124,533 994,625 751,050 514,627 271,000 10,886,767 27.0 2.58 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 449 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 40-R2 NET SALVAGE PERCENT.. -40 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 53.25 2.78 1,596.62 1,586.04 5,036.82 7,178.76 11,229.88 18,906.33 24,229.16 30,949.43 47,192.26 64,715.70 81,483.09 115,583.57 184,289.14 267,387.72 383,536.61 516,640.94 638,004.08 215,459.63 1,239,626.27 849,186.02 900,150.12 1,027,942.97 1,230,265.25 1,419,605.53 592,579.60 869,232.82 936,577.13 980,866.751,043,636.79 1,051,357.34 835,564.84 1,121,838.36 1,114,383.90 325,955.37 1,572,799.33 1,117,218.28 1,831,914.79 2,149,621.91 1,899,272.38 1,898,761.04 65 3 1,916 1,886 5,932 8,372 12,967 21,599 27,374 34,566 52,079 70,511 87,611 122,576 192,601 275,142 388,350 514,445 624,127 206,927 1,167,542 783,756 813,151 908,085 1,061,842 1,195,450 486,152 694,256 727,065 738,789 761,959 742,574 569,981 737,777 705,lB2 197,936 914,897 620,559 969,449 1,079,648 902,724 849,980 ALLOC. BOOK RESERVE (4) 75 4 2,235 2,220 7,052 10,050 15,722 26,469 33,921 43,329 66,069 90,602 114,076 161,817 258,005 374,343 536,951 719,510 872,913 289,411 1,632,941 1,096,173 1,137,285 1,270,061 1,485,108 1,671,974 679,939 970,997 1,016,884 1,033,281 1,065,687 1,038,575 797,184 1,031,866 986,278 276,836 1,279,588 867,923 1,355,886 1,510,012 1,262,563 1,188,795 ~i-408 FUTURE BOOK ACCRUALS (5) 3,787 20,293 12,232 102,536 92,687 122,925 169,059 237,263 315,474 149,672 245,929 294,324 339,932 395,405 433,325 372,607 538,708 573,859 179,502 922,331 696,183 1,208,795 1,499,459 1,396,418 1,469,470 REM. LIFE (6) 11.55 12.05 12.56 13.09 13 .63 14.19 14.76 15.34 15.94 16.56 17.18 17.82 18.48 19.14 19.82 20.51 21.21 21.92 22.65 23.38 24.13 24.88 25.65 26.42 27.21 ANAL ACCRUAL (7) 328 1,684 974 7,833 6,800 8,663 11,454 15,467 19,791 9,038 14,315 16,516 18,395 20,659 21,863 18,167 25,399 26,180 7,925 39,450 28,851 48,585 58,458 52,855 54,005 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 450 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 369.00 SERVICES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 40 - R2 NET SALVAGE PERCENT.. -40 1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 815,912.19 3,255,068.66 2,633,627.65 2,405,695.27 2,602,946.81 1,962,906.77 2,235,179.04 2,484,041.45 2,839,962.89 2,987,021.00 2,109,455.07 1,209,837.23 1,088,514.01 225,449.22 57,479,035.86 342,683 1,182,566 881,212 735,060 718,804 483, ,660 484,252 462,529 442,324 374,274 198,605 76,220 34,288 1,815 26,696,095 ALLOC. BOOK RESERVE (4) 479,281 1,653,954 1,232,476 1,028,066 1,005,330 676,454 677,282 646,900 618,641 523,465 277,772 106,602 47,956 2,538 37,257,327 FUTURE BOOK ACCRUALS (5) 662,996 2,903,142 2,454,603 2,339,907 2,638,796 2,071,615 2,451,969 2,830,758 3,357,307 3,658,364 2,675,465 1,587,170 1,475,964 313,091 43,213,323 REM. LIFE (6) 28.00 29.62 30.44 31. 27 32.11 32.96 33.81 34.68 35.55 36.42 37.31 38.20 39.10 39.77 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 29.5 ~i-409 ANAL ACCRUAL (7) 23,678 98,013 80,637 74,829 82,180 62,852 72,522 81,625 94,439 100,449 71,709 41,549 37,748 7,873 1,463,758 2.55 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 451 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 370. 00 METERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 22 -01 NET SALVAGE PERCENT.. +1 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 359.95 632.63 1,530.20 2,137.24 1,669.36 2,691.53 2,923.03 1,663.51 2,441.48 3,181. 73 3,755.53 4,359.93 4,981.77 6,900.32 8,642.85 9,901.88 12,796.44 15,183.04 17,041.02 19,848.58 24,583.29 26,454.01 28,632.22 24,045.45 29,404.83 39,784.87 44,951. 68 75,331.42 89,321.48 112,853.40 123,608.05 144,262.53 217,180.10 224,948.32 219,927.23 458,839.55 153,400.55 98,601. 68 156,598.19 170,973.07 79,510.49 120,142.89 356 626 1,515 2,116 1,653 2,665 2,894 1,647 2,417 3,150 3,718 4,316 4,932 6,831 8,556 9,803 12,668 15,031 16,871 19,650 24,337 26,189 28,346 23,264 27,788 36,702 40,456 66,103 76,370 93,951 100,122 113,606 166,143 167,024 158,347 320,043 103,546 64,338 98,656 103,867 46,514 67,580 ALLOC. BOOK RESERVE (4 ) 356 626 1,515 2,116 1,653 2,665 2,894 1,647 2,417 3,150 3,718 4,316 4,932 6,831 8,556 9,803 12,668 15,031 16,871 19,650 24,337 26,189 28,346 23,805 29,111 39,387 44,502 74,578 88,428 111,725 122,372 142,820 215,008 222,119 210,580 425,613 137,702 85,561 131,199 138,129 61,857 89,872 ~i-410 FUTURE BOOK ACCRUALS (5) 580 7,148 28,638 14,165 12,055 23,833 31,134 16,858 29,069 REM. LIFE (6 ) 5.50 6.00 6.50 7.00 7.50 8.00 8.50 9.00 9.50 ANAL ACCRUAL (7) 105 1,191 4,406 2,024 1,607 2,979 3,663 1,873 3,060 Exhibit No.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 452 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 370. 00 METERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 22-01 NET SALVAGE PERCENT.. + 1 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2010 2011 117,400.32 136,632.18 14B,698.65 273,198.21 325,008.46 333,730.53 373,508.49 460,300.37 469,885.47 555,686.03 403,408.01 693,368.99 25,751. 35 442,895.17 344,559.15 488,858.14 315,745.66 490,439.39 1,014,156.17 1,262,670.21 1,157,359.51 960,684.17 1,540,889.09 438,213.15 15,559,044.19 63,396 70,708 73,606 129,085 146,255 142,670 151,271 176,063 169,160 187,545 127,073 202,807 6,953 109,617 77,525 98,996 56,835 77,244 136,907 142,055 104,163 64,844 34,674 2,364 4,626,523 ALLOC. BOOK RESERVE (4) 84,308 94,032 97,886 171,665 194,499 189,731 201,170 234,139 224,959 249,409 168,990 269,705 9,247 145,775 103,098 131,651 75,583 102,724 182,067 188,914 138,522 86,234 46,111 3,144 5,988,218 FUTURE BOOK ACCRUALS (5) 31,918 41,234 49,326 98,801 127,259 140,662 168,603 221,558 240,228 300,720 230,384 416,730 16,247 292,691 238,016 352,319 237,005 382,811 821,948 1,061,130 1,007,264 864,843 1,479,369 430,687 9,415,236 REM. LIFE (6) 10.00 10.50 11. 00 11.50 12.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.50 17.00 17.50 18.00 18.50 19.00 19.50 20.00 20.50 21.50 21. 88 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 17.5 ~i-411 ANAL ACCRUAL (7 ) 3,192 3,927 4,484 8,591 10,605 11,253 1;2,969 16,412 17,159 20,739 15,359 26,886 1,015 17,739 14,001 20,133 13,167 20,692 43,260 54,417 50,363 42,187 68,808 19,684 537,950 3.46 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 453 of 491 IDAHO POWER COMPANY ACCOUNT 370. 10 METERS - AM I CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4 ) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANUAL ACCRUAL (7) SURVIVOR CURVE..IOWA 15-S2.5 NET SALVAGE PERCENT. .0 2004 4,580,242.90 2,058,041 1,496,217 3,084,026 8.26 373,369 2008 70,590.86 14,071 10,230 60,361 12.01 5,026200917,490,885.22 2,332,060 1,695,432 15,795,453 13.00 1,215,035 2010 17,239,040.11 1,149,327 835,573 16,403,467 14.00 1,171,67620118,957,401.40 149,320 108,557 8,848,844 14.75 599,922 48,338,160.49 5,702,819 4,146,009 44,192,151 3,365,028 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .13 .1 6.96 111-412 Exhibit No. 1 Case No. IPC-E-12"08 J. Spanos,lPC Page 454 of 491 IDAHO POWER COMPANY ACCOUNT 371.10 PHOTOVOLTAIC INSTALLATIONS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTUE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CURVE.. IOWA 12 -S4 NET SALVAGE PERCENT.. -2 1995 8,449.16 8,115 8,618 1996 11,574.55 10,950 11,806 1998 3,005.04 2,723 3,065 2008 16,844.84 4,295 8,756 8,426 9.00 936 39,873.59 26,083 32,245 8,426 936 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .9.0 2.35 ~i-413 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 455 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 371.20 INSTALLATIONS ON CUSTOMER PREMISES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 17-R1.5 NET SALVAGE PERCENT.. -2 1980 1981 1983 1985 1991 1992 1993 1994 1995 1996 1997 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 4,944.83 716.37 146.93 793.55 222.89 440.40 1,022,618.96 87,893.82 74,769.38 88,603.82 160,851.13 101,110.12 78,244.97 107,164.55 38,054.12 90,724.66 108,392.26 95,633.67 128,411.72 128,937.46 170,391.01 192,596.19 35,004.56 2,716,667.37 4,735 675 134 701 171 328 735,668 60,857 49,572 55,980 96,415 49,625 35,351 44,045 14,042 29,613 30,567 22,722 24,578 18,644 16,561 9,477 441 1,300,902 ALLOC. BOOK RESERVE (4) 5,044 731 150 809 227 449 1,043,071 89,652 76,265 90,376 164,068 103,132 79,810 107,072 34,136 71,988 74,308 55,237 59,748 45,323 40,260 23,038 1,072 2,165,966 FUTURE BOOK ACCRUALS (5) 2,236 4,679 20,551 36,252 42,309 71,232 86,193 133,539 173,410 34,633 605,035 REM. LIFE (6) 10.15 10.85 11.56 12.30 13.04 13.81 14.59 15.38 16.18 16.79 COMPOSITE REMAINING LIFE AN ANNUAL ACCRUAL RATE, PERCENT .. 14.7 11-414 ANAL ACCRUAL (7 ) 220 431 1,778 2,947 3,245 5,158 5,908 8,683 10,718 2,063 41,151 1. 51 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 456 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AND SIGNAL SYSTEMS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 30 - Rl NET SALVAGE PERCENT.. -25 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 187.09 708.97 824.53 1,294.37 2,151.03 3,318.37 4,842.08 8,367.92 4,400.73 8,061.98 9,266.42 13,418.81 18,059.70 16,093.47 16,407.54 21,289.47 15,494.47 28,696.12 31,546.51 35,885.35 50,358.03 56,516.92 51,732.28 67,328.38 75,718.90 42,828.34 28,027.41 14,500.35 65,727.98 116,615.16 343,867.59 379,451.89 521,112.13 133,293.54 40,480.84 46,864.50 6,621.84 20,908.26 62,770.40 128,459.24 78,908.51 100,348.01 225 844 970 1,507 2,477 3,780 5,455 9,323 4,846 8,774 9,958 14,235 18,910 16,617 16,701 21,343 15,294 27,871 30,140 33,687 46,413 51,100 45,869 58,464 64,330 35,565 22,726 11,467 50,638 87,413 250,306 267,988 356,310 88,OB5 25,807 28,763 3,901 11,805 33,843 65,943 38,468 46,244 ALLOC. BOOK RESERVE (4) 234 886 1,031 1,618 2,689 4,148 6,053 10,460 5,501 10,077 11,583 16,774 22,575 20,117 20,509 26,612 19,368 35,870 39,433 44,857 62,948 70,646 64,665 84,160 92,640 51,216 32,727 16,513 72,922 125,881 360,459 385,922 513,112 126,849 37,164 41,421 5,618 17,000 48,736 94,963 55,397 66,595 ~i-415 FUTURE BOOK ACCRUALS (5) 2,009 2,319 21307 1,612 9,238 19,888 69,375 88,393 138,278 39,768 13,437 17,160 2,659 9,135 29,727 65,611 43,239 58,840 REM. LIFE (6) 9.61 10.07 10.54 11.02 11. 51 12.01 12.53 13.05 13.59 14.14 14.70 15.27 15.86 16.45 17.06 17.68 18.30 18.94 ANAL ACCRUAL (7) 209 230 219 146 803 1,656 5,537 6,773 10,175 2,812 914 1,124 168 555 1,742 3,711 2,363 3,107 Exhibit No. 1 Case No. IPC-E-12-D8 J. Spanos, IPC Page 457 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 373.20 STREET LIGHTING AND SIGNAL SYSTEMS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 30-R1 NET SALVAGE PERCENT.. -25 1996 1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 173,475.38 258,112.59 21,038.67 123,919.99 135/501.56 120,092.90 16,267.99 97,275.51 89,985.35 121,478.85 126,181.95 86,579.01 137,541.82 169,146.83 32,212.25 4,381,566.08 75,317 105,074 7,399 40,119 40,029 32,075 3,877 20,388 16,234 18,374 15,300 7,936 8,424 5,216 255 2,330,422 ALLOC. BOOK RESERVE (4) 108,462 151,314 10,655 57,774 57,645 46,190 5,583 29,360 23,378 26,460 22,033 11,429 12,131 7,512 367 3,298,242 FUTE BOOK ACCRUALS (5 ) 108,382 171,327 15,643 97,126 111,732 103,926 14,752 92,234 89,104 125,389 135,694 96,795 159,796 203,922 39,898 2,178,716 REM. LIFE (6) 19.58 20.23 21.56 22.23 22.91 23.59 24.28 24.97 25.67 26.37 27.09 27.80 28.53 29.26 29.81 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 20.6 ~i-416 ANAL ACCRUAL (7) 5,535 8,469 726 4,369 4,877 4,406 608 3,694 3,471 4,755 5,009 3,482 5,601 6,969 1,338 105,553 2.41 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 458 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 390.11 STRUCTURES AND IMPROVEMENTS - CHQ BUILDING CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) INTERIM SURVIVOR CURVE.. IOWA 100-S0. 5 PROBABLE RETIREMENT YEAR.. 6 - 2 041 NET SALVAGE PERCENT.. -5 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 21,755,499.02 516,510.65 26,073.10 186,524.00 2,B79.03 30,315.95 176,155.21 116,852.95 199,324.01 25,834.38 160,487.30 29,168.44 505,561.59 782,849.94 502,411.96 115,204.62 668,358.05 132,332.14 255,257.73 344,070.49 331,255.77 26,862,926.33 9,195,788 211,663 10,338 71,382 1,059 10,696 59,382 37,454 60,351 7,350 42,553 7,142 113,042 157,362 89,053 17,504 83,680 12,828 17,019 11,882 2,929 10,220,457 7,577,095 174,405 8,518 58,817 873 8,813 48,929 30,861 49,728 6,056 35,063 5,885 93,144 129,662 73,377 14,423 68,950 10,570 14,023 9,791 2,413 8,421,396 FUTURE BOOK ACCRUALS (5) 15,266,179 367,931 18,859 137,033 2,150 23,019 136,034 91,835 159,562 21,070 133,449 24,742 437,696 692,330 454,156 106,542 632,826 128,379 253,998 351,483 345,406 19,784,677 REM. LIFE (6) 28.42 28.48 28.53 28.58 28.64 28.69 28.74 28.79 28.85 28.90 28.95 29.00 29.05 29.10 29.15 29.20 29.25 29.30 29.35 29.40 29.44 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 28.6 ~i-417 ANAL ACCRUAL (7) 537,163 12,919 661 4,795 75 802 4,733 3,190 5,531 729 4,610 853 15,067 23,791 15,580 3,649 21,635 4,382 8,654 11,955 11,733 692,507 2.58 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 459 of 491 IDAHO POWER COMPANY ACCOUNT 390.12 STRUCTUES AN IMPROVEMENTS - EXCLUDING CHQ BUILDING YEAR (1 ) CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 55-SO. 5 NET SALVAGE PERCENT.. -5 1919 1929 1937 1939 1940 1942 1945 1946 1947 1948 1949 1950 1951 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 49.26 1,434.74 110.10 90,151.03 5,194.69 118.03 126.36 800.00 1,835.80 18.15 441. 638,097.42 85,531.18 10,709.44 110,050.36 737.42 15,753.59 30,047.74 105,033.04 12,429.07 38,275.45 16,859.76 66,465.84 6,660.15 283,544.76 212,051.40 65,287.19 15,894.49 40,829.03 3,815.27 1,970.65 20,501. 43 4,734.43 23,048.71 237,125.73 17,054.57 217,204.64 98,911.63 371,666.21 95,673.24 726,746.87 276,370.55 46 1,245 90 72,113 4,119 92 96 600 1,363 13 321 5,830 60,906 7,460 75,803 502 10,598 19,968 68,938 8,053 24,479 10,641 41,379 4,088 171,541 126,427 38,326 9,185 23,220 2,134 1,084 11,076 2,512 11,999 121,095 8,534 106,445 47,453 174,336 43,854 325,074 120,559 ALLOC. BOOK RESERVE (4) 47 1,268 92 73,443 4,195 94 98 611 1,388 13 327 5,938 62,029 7,598 77,201 511 10,793 20,336 70,209 8,202 24,930 10,837 42,142 4,163 174,705 128,759 39,033 9,354 23,648 2,173 1,104 11,280 2,558 12,220 123,328 8,691 1081408 48,328 177,551 44,663 331,069 122,783 ~i-418 FUTURE BOOK ACCRUALS (5 ) 5 238 24 21,216 1,259 30 35 229 540 6 137 2,564 27,779 3,647 38,352 263 5,748 11,214 40,076 4,849 15,259 6,866 27,647 2,830 123,017 93,895 29,519 7,335 19,222 1,833 965 10,247 2,413 11,981 125,654 9,216 119,657 55,529 212,699 55,794 432,015 167,406 REM. LIFE (6) 6.17 9.56 12.37 13.10 13.47 14.21 15.34 15.72 16.11 16.50 16.90 17.29 17.70 18.51 18.92 19.34 19.76 20.19 20.62 21.06 21. 50 21.94 22.39 22.85 23.31 23.77 24.25 24.73 25.21 25.70 26.20 26.70 27.21 27.73 28.25 28.79 29.33 29.87 30.43 30.99 31. 57 32.15 ANAL ACCRUAL (7) 1 25 2 1,620 93 2 2 15 34 8 148 1,569 197 2,027 14 291 555 1,944 230 710 313 1,235 124 5,277 3,950 1,217 297 762 71 37 384 89 432 4,448 320 4,080 1, B59 6,990i,800 13,684 5,207 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos,lPC Page 460 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 390.12 STRUCTURES AN IMPROVEMENTS - EXCLUDING CHQ BUILDING CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 55-SO. 5 NET SALVAGE PERCENT.. - 5 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 1,053,183.09 2,970,686.16 551,193.79 3,949,763.62 272,908.67 66,441.02 54,824.58 69,774.79 279,863.23 264,562.54 1,397,601.67 227,057.96 4,095,341.97 161,894.01 116,451.58 1,266,823.49 242,325.36 1,870,215.90 815,915.11 1,432,133.05 311,090.73 24,002.63 1,271,413.86 3,106,980.68 578,423.38 3,282,199.23 2,320,078.35 4,454,409.95 932,365.87 5,685,347.89 46,444,635.21 447,568 1,228,411 221,610 1,541,285 103,211 24,316 19,384 23,791 91,845 83,387 421,828 65,499 1,125,081 42,218 28,723 294,086 52,692 378,823 152,803 246,072 48,523 3,359 157,048 332,170 52,013 238,726 127,553 164,962 17,445 27,162 9,525,191 ALLOC. BOOK RESERVE (4 ) 455,823 1,251,067 225,697 1,569,711 105,115 24,764 19,742 24,230 93,539 84,925 429,608 66,707 1,145,831 42,997 29,253 299,510 53,664 385,809 155,621 250,610 49,418 3,421 159,944 338,296 52,972 243,129 129,906 168,004 17,767 27,663 9,700,863 FUTURE BOOK ACCRUALS (5) 650,019 1,868,153 353,056 2,577,541 181,439 44,999 37,824 49,034 200,317 192,866 1,037,874 171,704 3,154,278 126,992 93,021 1,030,655 200,778 1,577,918 701,090 1,253,130 277,227 21,782 1,175,041 2,924,034 554,373 3,203,180 2,306,176 4,509,126 961,217 5,941,952 39,066,004 REM. LIFE (6 ) 32.74 33.34 33.94 34.56 35.19 35.83 36.48 37.14 37.81 38.49 39.19 39.89 40.61 41. 34 42.08 42.84 43.61 44.39 45.19 46.00 46.83 47.67 48.53 49.40 50.29 51.19 52.12 53.06 54.02 54.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 44.3 ~i-419 ANAL ACCRUAL (7) 19,854 56,033 10,402 74,582 5,156 1,256 1,037 1,320 5,298 5,011 26,483 4,304 77,672 3,072 2,211 24,058 4,604 35,547 15,514 27,242 5,920 457 24,213 59,191 11,024 62,574 44,247 84,982 17,794 108,529 881,650 1. 90 Exhibit NO.1 Case No. IPC-E-12-0B J. Spanos, IPC Page 461 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 390.20 LEASEHOLD IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 35 - S 3 NET SALVAGE PERCENT.. 0 1946 1947 1949 1950 1957 1969 1973 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 1,700.68 1,186.96 3,414.44 1,040.07 60.48 1,744.37 1,622.85 9,250.32 229.52 15,204.38 200,218.82 299,289.99 429,924.66 49,341.35 487,726.07 310,741.41 42,419.67 104,434.73 41,964.66 174,654.38 306,646.61 18,337.21 53,469.71 42,710.67 34,394.35 1,404,511.96 9,418.63 226,812.33 246,593.27 2,121,852.32 186,985.65 125,778.07 86,068.10 193,033.93 38,040.26 1,254,142.71 554,261.75 1,672 1,163 3,319 1,007 57 1,512 1,352 7,207 176 11,455 148,048 216,857 304,756 34,159 329,147 204,023 27,027 64,451 24,999 100,201 168,919 9,211 25,498 19,257 14,593 557,788 3,480 77,504 77,359 605,640 48,029 28,749 17,214 33,092 5,434 143,336 47,506 ALLOC. BOOK RESERVE (4 ) 1,701 1,187 3,414 1,040 60 1,744 1,623 9,250 230 15,194 196,377 287,648 404,241 45,310 436,594 270,624 35,850 85,490 33,160 132,911 224,061 12,218 33,822 25,543 19,357 739,873 4,616 102,804 102,612 803,346 63,708 38,134 22,833 43,895 7,20B 190,126 63,014 ~i-420 FUTRE BOOK ACCRUALS (5) 10 3,842 11,642 25,684 4,031 51,132 40,117 6,570 18,945 8,805 41,743 82,586 6,119 19,648 17,168 15,037 664,639 4,803 124,008 143,981 1,318,506 123,278 87,644 63,235 149,139 30,832 1,064,017 491,248 REM. LIFE (6) 8.63 9.12 9.64 10.19 10.77 11.38 12.02 12.70 13.40 14.15 14.92 15.72 17.42 18.31 19.22 20.15 21.10 22.07 23.04 24.02 25.01 26.01 27.00 28.00 29.00 30.00 31.00 32.00 ANAL ACCRUAL (7) 1 421 1,208 2,521 374 4,493 3,338 517 1,414 622 2,798 5,254 351 1,073 893 746 31,499 218 5,382 5,994 52,719 4,740 3,246 2,258 5,143 1,028 34,323 15,352 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 462 of 491 IDAHO POWER COMPANY ACCOUNT 390.20 LEASEHOLD IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) REM. LIFE (6) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) SURVIVOR CURVE. .IOWA 35 -83 NET SALVAGE PERCENT. .0 2009 862,493.30 49,283 65,371 797,122 33.00 2010 5,351.32 153 203 5,148 34.002011169,186.41 1,208 1,602 167,584 34.75 10,116,258.37 3,415,841 4,527,994 5,588,264 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 25.7 ~i-421 ANAL ACCRUAL (7) 24,155 151 4,823 217,055 2.15 Exibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 463 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 391.10 OFFICE FURITURE AN EQUIPMENT - FURITURE CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. 20 - SQUARE NET SALVAGE PERCENT.. 0 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2010 2011 871.00 45,942.54 209,729.76 383,874.32 2,533,053.09 395,605.01 779,897.13 653,976.65 178,051.77 812,704.16 524,841.90 816,163.95 877,180.30 340,343.55 543,173.12 365,367.56 414,961.17 881,170.82 326,534.15 1,523,600.64 1,501,148.33 396,899.18 187,592.71 14,692,682.81 871 45,943 209,730 383,874 2,406,400 356,045 662,913 523,181 133,539 568,893 341,147 489,698 482,449 170,172 244,428 146,147 145,236 264,351 81,634 304,720 225,172 19,845 2,345 8,208,733 ALLOC. BOOK RESERVE (4 ) 871 45,943 209,730 383,874 2,533,053 395,605 779,893 615,503 157,104 669,281 401,347 576, ILL 567,583 200,201 287,561 171,937 170,865 310,999 96,039 358,492 264,906 23,347 2,759 9,223,004 FUTE BOOK ACCRUALS (5) 4 38,474 20,948 143,423 123,495 240,053 309,597 140,143 255,612 193,431 244,096 570,172 230,495 1,165,109 1,236,242 373,552 184,834 5,469,679 REM. LIFE (6) 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 19.00 19.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 12.9 ~i-422 ANAL ACCRUAL (7) 1 9,618 4,190 23,904 17,642 30,007 34,400 14,014 23,237 16,119 18,777 40,727 15,366 72,819 72,720 19,661 9,359 422,561 2.88 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 464 of 491 IDAHO POWER COMPANY ACCOUNT 391.20 OFFICE FURNITURE AND EQUIPMENT - EDP EQUIPMENT - COMPUTERS YEAR (1) CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. 5-SQUARE NET SALVAGE PERCENT.. 0 2001 2002 2006 2007 2008 2009 2010 2011 452.01 300,045.51 1,073,937.05 6,522,188.97 7,831,913.09 1,548,644.61 3,248,912.79 3,313,944.90 23,840,038.93 452 300,046 1,073,937 5,217,751 4,699,148 619,458 649,783 165,697 12,726,272 ALLOC. BOOK RESERVE (4) 452 300,046 1,073,937 6,423,337 5,784,908 762,587 799,918 203,982 15,349,167 FUTURE BOOK ACCRUALS (5 ) 98,852 2,047,005 786,058 2,448,995 3,109,963 8,490,872 REM. LIFE (6) 1. 00 2.00 3.00 4.00 4.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 3.2 ~i-423 ANAL ACCRUAL (7) 98,852 1,023,502 262,019 612,249 654,729 2,651,351 11.12 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 465 of 491 IDAHO POWER COMPANY ACCOUNT 391.21 OFFICE FURNITUE AND EQUIPMENT - EDP EQUIPMENT - SERVERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5 ) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CURVE. .IOWA 8-L2 NET SALVAGE PERCENT. .0 2005 207,480.67 112,818 138,642 68,839 3.65 18,8602006103,656.35 51,439 63,213 40,443 4.03 10,035200714B,420.48 63,821 78,429 69,991 4.56 15,34920082,231,295.74 764,219 939,147 1,292,149 5.26 245,65620091,629,087.41 386,908 475,471 1,153,616 6.10 189,117201023,744.21 2,909 3,575 20,169 7.02 2,8732011466,886.90 14,590 17,929 448,958 7.75 57,930 4,810,571.76 1,396,704 1,716,406 3,094,166 539,820 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE,PERCENT . .5.7 11.22 ~i-424 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 466 of 491 IDAHO POWER COMPANY ACCOUNT 392.10 TRASPORTATION EQUIPMENT - AUTOMOBILES CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6 ) ANAL ACCRUAL (7) SURVIVOR CURVE.. IOWA 12-L2 NET SALVAGE PERCENT.. +15 1989 11,645.03 8,026 7,115 2,783 2.27 1,226200041,151.97 20,667 18,322 16,657 4.91 3,392200124,154.27 11,686 10,360 10,171 5.17 1,967 2002 66,001. 91 30,529 27,064 29,038 5.47 5,309 2003 19,171.57 8,379 7,428 8,868 5.83 1,521 2004 23,033.46 9,332 8,273 11,305 6.28 1,800200629,645.56 9,429 8,359 16,840 7.51 2,242200746,815.96 12,270 10,878 28,916 8.30 3,484 2008 92,494.45 18,672 16,553 62,067 9.15 6,783200941,549.60 5,739 5,088 30,229 10.05 3,008201065.00 5 4 51 11.01 5 2011 271,286.09 4,803 4,258 226,335 11.75 19,263 667,014.87 139,537 123,702 443,261 50,000 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .8.9 7.50 ~i-425 Exhibit No. 1 Case No. IPC-E-12-QS J. Spanos, IPC Page 467 of 491 IDAHO POWER COMPANY ACCOUNT 392.30 TRASPORTATION EQUIPMENT - AIRCRAFT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CURVE.. IOWA 10-S2. 5 NET SALVAGE PERCENT.. + 5 0 2002 1,854,899.54 679,821 866,558 60,892 2.67 22,806 2003 134,463.01 45,986 58,618 8,614 3.16 2,726 2004 55,385.14 17,308 22,062 5,631 3.75 1,5022005535,472.05 148,861 189,751 77,985 4.44 17,564 2,580,219.74 891,976 1,136,989 153,121 44,598 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .3.4 1. 73 111-426 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 468 of491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 392.40 TRASPORTATION EQUIPMENT - SMAL TRUCKS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 12 - L2 NET SALVAGE PERCENT.. +15 1981 1982 1984 1987 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 29,607.52 9,884.63 13,349.24 22,959.78 47,432.05 65,857.67 109,709.44 94,732.60 179,365.57 135,934.18 18,327.79 281,702.67 1,229,367.83 867,598.25 542,100.99 5,577.07 1,197,316.93 1,533,214.67 1,231,985.30 935,299.62 1,695,375.36 2,165,560.27 2,583,326.76 1,966,197.84 440,704.50 1,140,201.59 82,824.26 18,625,514.38 23,593 7,758 10,136 16,491 32,690 44,363 72,194 60,728 111,932 82,421 10,788 160,830 680,093 465,211 281,462 2,801 579,255 709,180 538,432 378,955 620,856 688,745 677,040 396,926 60,872 79,957 1,466 6,795,175 ALLOC. BOOK RESERVE (4) 22,617 7,437 9,717 15,809 31,338 42,528 69,208 58,216 107,302 79,012 10,342 154,177 651,960 445,967 269,819 2,685 555,293 679,843 516,159 363,279 595,173 660,254 649,033 380,506 58,354 76,650 1,405 6,514,083 FUTUE BOOK ACCRUALS (5) 2,549 965 1,630 3,707 8,979 13,451 24,045 22,307 45,159 36,532 5,237 85,270 393,003 291,492 190,967 2,056 462,426 623,389 531,029 431,726 845,896 1,180,472 1,546,795 1,290,762 316,245 892,521 68,996 9,317,604 REM. LIFE (6) 0.75 0.92 1. 28 1. 86 2.27 2.49 2.71 2.95 3.19 3.44 3.69 3.94 4.19 4.43 4.67 4.91 5.17 5.47 5.83 6.28 6.83 7.51 8.30 9.15 10.05 11.01 11.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 6.8 111-427 ANAL ACCRUAL (7) 2,549 965 1,273 1,993 3,956 5,402 8,873 7,562 14,156 10,620 1,419 21,642 93,795 65,800 40,892 419 89,444 113,965 91,086 68,746 123,850 157,187 186,361 141,067 31,467 81,065 5, B72 1,371,426 7.36 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 469 of 491 YEAR (i) IDAHO POWER COMPANY ACCOUNT 392.50 TRASPORTATION EQUIPMENT - MISCELLANEOUS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 12 -L2 NET SALVAGE PERCENT.. +15 1991 1993 1995 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 21,520.36 11,114.81 11,792.39 6,877.13 6,182.25 60,218.51 29,815.69 75,758.58 6,841.06 70,928.00 41,012.75 11 7,948.31 19,031.46 55,359.18 678.30 64,591. 57 112,057.46 40,397.06 752,124.87 14,161 6,936 6,941 3,804 3,315 31,266 14,974 36,652 3,164 30,999 16,617 43,193 6,053 14,509 137 8,922 7,858 715 250,216 ALLOC. BOOK RESERVE (4) 18,292 9,448 10,024 5,846 5,255 50,999 24,425 59,785 5,161 50,564 27,105 70,454 9,873 23,666 223 14,554 12,818 1,166 399,658 FUTURE BOOK ACCRUALS (5 ) 187 918 4,610 654 9,725 7,756 29,802 6,304 23,389 354 40,349 82,431 33,172 239,648 REM. LIFE (6) 4.67 4.91 5.17 5.47 5.83 6.28 6.83 7.51 8.30 9.15 10.05 11.01 11.75 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 9.0 ~i-428 ANAL ACCRUAL (7) 40 187 892 120 1,668 1,235 4,363 839 2,818 39 4,015 7,487 2,823 26,526 3.53 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 470 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 392.60 TRASPORTATION EQUIPMENT - LAGE TRUCKS (HYD) CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 20 - L2 NET SALVAGE PERCENT.. +15 1982 1983 1984 1985 1986 1987 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 48,219.57 79,284.44 171,984.68 56,691.28 226,582.24 287,176.67 458,238.38 409,084.50 941,282.81 676,006.82 1,114,664.78 265,159.40 214,912.11 1,317,261.75 1,687,414.97 491,171.38 1,460,113.44 1,279,839.11 1,657,131.19 1,089,547.86 938,297.08 905,530.26 2,701,894.34 3,640,895.90 3,441,889.55 1,940,465.49 1,647,215.76 29,608.84 29,177,564.60 29,592 47,814 101,892 32,984 129,327 160,984 242,660 212,458 47B,854 337,006 543,371 126,103 99,375 590,067 727,909 202,485 570,284 468,325 560,607 334,791 257,211 216,286 546,593 597,289 430,064 163,290 70,007 315 8,277,943 ALLOC. BOOK RESERVE (4) 30,771 49,718 105,950 34,298 134,478 167,395 252,324 220,919 497,925 350,428 565,011 131,125 103,333 613,567 756,898 210,549 592,996 486,976 582,934 348,124 267,455 224,900 568,361 621,077 447,191 169,793 72,795 328 8,607,619 FUTRE BOOK ACCRUALS (5 ) 10,216 17,674 40,237 13,890 58,117 76,705 137,179 126,803 302,165 224,178 382,454 94,260 79,342 506,105 677,405 206,947 648,100 600,887 825,628 577,992 530,098 544,801 1,728,249 2,473,685 2,478,415 1,479,603 1,327,338 24,840 16,193,311 REM. LIFE (6) 5.56 5.81 6. 06 6.31 6.57 6.81 7.54 7.78 8.03 8.27 8.53 8.81 9.12 9.46 9.85 10.30 10.81 11 .39 12.04 12.77 13 .55 14.38 15.24 16.14 17.06 18.02 19.00 19.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 13.4 ~i-429 ANAL ACCRUAL (7) 1,837 3,042 6,640 2,201 8,846 11,264 18,194 16,299 37,630 27,107 44,836 10,699 8,700 53,499 68,772 20,092 59,954 52,756 68,574 45,262 . 39,122 37,886 113,402 153,264 145,276 82,109 69,860 1,258 1,208,381 4.14 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 471 of 491 YEAR ( 1) IDAHO POWER COMPANY ACCOUNT 392.70 TRASPORTATION EQUIPMENT - LARGE TRUCKS (NON-HYD) CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 20-L2 NET SALVAGE PERCENT.. + 1 5 1958 1961 1973 1976 1977 1978 1980 1981 1983 1984 1985 1986 1987 1988 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2004 2005 2006 2007 2008 2010 2011 1,082.03 9,467.40 27/777.04 13/826.74 14/731.22 63/897.41 20 1721. 75 78,590.65 246,190.60 86/033.32 54,502.42 82,714.48 63 1501. 02 54 1511. 19 190/933.02 315,231.62 13,296.47 79/802.95 106,156.43 64,071.71 338/692.40 5,113.89 92,676.71 988.76 290/637.69 189,747.75 132,143.64 498,888.07 142,819.04 72,719.89 471/783.94 110/642.03 484,854.24 12,826.76 4,431/574.28 886 7,548 19 1467 9,314 9,786 41,821 13,148 49,066 148,471 50,970 31/711 47,211 35,597 29,978 101/109 163/716 6,764 39,784 51,749 30,471 156,611 2,291 39,978 408 113,516 69,433 44,704 136,758 34 1112 14,711 77/396 13 1825 20,606 136 1/613,052 ALLOC. BOOK RESERVE (4 ) 920 8,047 23,610 11,469 12 1050 51,498 16,190 60/419 182,824 62,764 39,048 58/135 43,833 36,914 124,504 201,597 8,329 48,989 63,723 37,521 192,848 2/821 49,228 502 139,782 85,499 55,048 168,401 42,005 18,115 95,304 17,024 25,374 167 1,984,502 FUTURE BOOK ACCRUALS (5 ) 284 472 2/815 1,423 6,383 26,438 10,364 7,279 12,172 10,143 9,421 37,789 66,350 2,973 18,844 26,510 16/940 95/041 1/526 29,547 338 107,260 75,787 57 1274 255/654 79,391 43,697 305,712 77 1022 386,752 10,736 1/782,336 REM. LIFE (6) 4.15 4.37 4.60 5.07 5.31 5.81 6.06 6.31 6.57 6.81 7.06 7.54 7.78 8.03 8.27 8.53 8.81 9.12 9.46 9.85 10.30 10.81 11.39 12.04 13.55 14.38 15.24 16.14 17.06 19.00 19.75 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 12.5 ~i-430 ANAL ACCRUAL (7 ) 68 108 612 281 1,202 4,550 1,710 1/154 1,853 1/489 1,334 5,012 8,528 370 2,279 3,108 1,923 10,421 161 3,000 33 9,922 6,654 4,757 18,867 5,521 2/867 18,941 4,515 20 1355 544 142,139 3.21 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 472 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 392.90 TRASPORTATION EQUIPMENT - TRAILERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. IOWA 35-S1 NET SALVAGE PERCENT.. + 15 1947 1949 1951 1955 1957 1963 1966 1967 1969 1970 1971 1972 1973 1974 1975 1976 1978 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 508.72 1,498.37 7,458.48 1,271. 97 8,200.00 18,541.81 914.78 4,479.88 19,006.72 3,967.48 17,628.52 3,884.47 56.53 21,694.71 85,229.57 7,658.09 3,233.85 6,247.59 2,763.39 62,089.71 89,148.28 223,854.17 78,350.65 17,596.25 75,208.56 105,338.41 32,464.99 119,228.66 71,019.48 437,643.92 44,063.91 116,533.09 102,270.99 67,047.38 244,401.92 40,329.26 85,233.75 172,038.54 150,469.36 194,084.36 59,358.53 65,062.53 413 1,195 5,845 961 6,072 12,870 612 2,960 12,228 2,517 11,024 2,393 34 12,951 50,049 4,419 1,799 3,341 1,447 31,801 44,621 109,327 37,314 8,158 33,881 46,048 13,750 48,819 28,062 166,335 16,073 40,668 34,027 21,184 73,007 11,332 22,377 41,906 33,728 39,641 10,898 10,555 ALLOC. BOOK RESERVE (4) 432 1,274 6,340 1,081 6,970 15,473 736 3,559 14,701 3,026 13,254 2,877 41 15,571 60,173 5,313 2,163 4,017 1,740 38,234 53,647 131,441 44,862 9,80B 40,734 55,363 16,531 58,694 33,73B 199,981 19,324 48,894 40,910 25,469 87,775 13,624 26,903 50,383 40,551 47,660 13,102 12,690 ~i-431 FUTURE BOOK ACCRUALS (5 ) 288 42 249 1,455 346 1,730 425 7 2,870 12,272 1,196 586 1,293 609 14,542 22,129 58,835 21,736 5,149 23,193 34,175 11,064 42,650 26,629 172,016 18,130 50,159 46,020 31,521 119,967 20,656 45,546 95,850 87,348 117,312 37,353 42,613 REM. LIFE (6) 6.42 7.44 7.79 8.51 8.88 9.25 9.63 10.02 10.42 10.82 11. 24 12.09 12.98 13 .44 13.91 14.39 14.89 15.39 15.91 16.45 17.00 17.56 18.14 18.73 19.35 19.98 20.63 21. 30 21. 99 22.70 23.43 24.19 24.97 25.77 26.59 27.44 28.32 ANAL ACCRUAL (7 ) 45 6 32 171 39 187 44 1 275 1,134 106 48 100 45 1,045 1,538 3,951 1,412 324 1,410 2,010 630 2,351 1,422 8,890 907 2,431 2,161 1,433 5,285 882 1,883 3,839 3,390 4,412 1,361 1,505 Exhibit NO.1 Case No. IPC-E-12-o8 J. Spanos, IPC Page 473 of 491 IDAHO POWER COMPANY ACCOUNT 392.90 TRASPORTATION EQUIPMENT - TRAILERS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CURVE..IOWA 35-S1 NET SALVAGE PERCENT..+15 2005 318,538.60 44,791 53,851 216,907 29.21 7,426 2006 265,944.42 31,453 37,816 188,237 30.13 6,2472007369,412.79 35,259 42,391 271,610 31.07 8,742200849,940.14 3,602 4,331 38,118 32.03 1,190200986,223.02 4,167 5,010 68,280 33.01 2,068201046,762.93 1,136 1,366 38,382 34.00 1,129 2011 164,270.91 997 1,198 138,432 34.75 3,984 4,168,174.44 1,178,047 1,415,022 2,127,926 87,491 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .24.3 2.10 ~i-432 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos. IPC Page 474 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 393.00 STORES EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. 25 - SQUARE NET SALVAGE PERCENT.. 0 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 39,205.12 7,738.96 787.16 18,207.00 40,131.20 42,455.27 37,843.85 10,653.83 31,809.71 39,546.66 44,523.81 110,557.33 4,640.77 29,744.86 33,635.12 52,588.84 32,043.92 104,837.43 26,202.34 2,168.12 185,106.70 136,650.86 256,638.98 171,620.58 67,930.21 1,527,268.63 39,205 7,429 724 16,022 33,710 33,964 28,761 7,671 21,631 25,310 26,714 61 ,912 2,228 13,088 13,454 18,932 10,254 29,354 6,289 434 29,617 16,398 20,531 6,865 679 471,176 ALLOC. BOOK RESERVE (4) 39,205 7,739 787 18,207 39,899 40,199 34,041 9,079 25,602 29,957 31,618 73,278 2,637 15,491 15,924 22,408 12,137 34,743 7,444 514 35,054 19,408 24,300 8,125 804 548,600 FUTURE BOOK ACCRUALS (5) 232 2,256 3,803 1,575 6,208 9,590 12,906 37,279 2,004 14,254 17,711 30,181 19,907 70,094 18,758 1,654 150,053 117,243 232,339 163,496 67,126 978,669 REM. LIFE (6) 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23. 00 24.00 24.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 19.4 111-433 ANAL ACCRUAL (7) 58 451 634 225 776 1,066 1,291 3,389 154 I, 018 1,181 1,886 1,171 3,894 987 83 7,145 5,329 10,102 6,812 2,712 50,364 3.30 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 475 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 394.00 TOOLS, SHOP AN GARGE EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. 20 - SQUARE NET SALVAGE PERCENT.. 0 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 195,448.93 105,259.95 155,375.47 238,458.34 155,609.12 337,712.15 223,924.99 94,237.55 193,259.98 362,505.64 203,889.40 301,924.33 210,926.88 352,999.19 406,261.92 126,189.81 289,705.39 571,472.30 656,258.11 386,103.19 200,419.08 5,767,941.72 195,449 99,997 139,838 202,690 124,487 253,284 156,747 61,254 115,956 199,378 101,945 135,866 84,371 123,550 121,879 31,547 57,941 85,721 65,626 19,305 2,505 2,379,336 ALLOC. BOOK RESERVE (4) 195,449 105,260 153,628 222,678 136,763 278,261 172,205 67,295 127,391 219,039 111,998 149,264 92,691 135,734 133,898 34,658 63,655 94,174 72,098 21,209 2,752 2,590,100 FUTE BOOK ACCRUALS ( 5) 1,747 15,780 18,846 59,451 51,720 26,943 65,869 143,467 91,891 152,660 118,236 217,265 272,364 91,532 226,050 477,298 584,160 364,894 197,667 3,177,842 REM. LIFE (6 ) 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 19.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 13.3 111-434 ANAL ACCRUAL (7) 874 5,260 4,712 11,890 8,620 3,849 8,234 15,941 9,189 13,878 9,853 16,713 19,455 6,102 14,128 28,076 32,453 19,205 10,008 238,440 4.13 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 476 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 395.00 LABORATORY EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. 20 - SQUARE NET SALVAGE PERCENT.. 0 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 749,944.12 254,363.41 487,780.33 612,914.19 345,423.74 558,248.22 823,945.83 97,150.42 583,575.60 737,649.20 883,297.70 339,181.18 529,682.11 403,526.94 383,788.29 580,582.57 634,672.81 910,338.60 1,204,211.50 826,417.95 326,868.90 12,273,563.61 749,944 241,645 439,002 520,977 276,339 418,686 576,762 63,148 350,145 405,707 441,649 152,632 211,873 141,234 115,136 145,146 126,935 136,551 120,421 41,321 4,086 5,679,339 ALLOC. BOOK RESERVE (4) 749,944 252,480 458,687 544,337 288,730 437,460 602,624 65,980 365,845 423,899 461,452 159,476 221,373 147,567 120,299 151, 654 132,627 142,674 125,820 43,174 4,269 5,900,371 FUTURE BOOK ACCRUALS (5) 1,883 29,093 68,577 56,694 120,788 221,322 31,170 217,731 313,750 421,846 179,705 308,309 255,960 263,489 428,929 502,046 767,665 1,078,392 783,244 322,600 6,373,193 REM. LIFE (6) 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 19.75 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 12.1 ~i-435 ANAL ACCRUAL (7) 1,883 14,546 22,859 14,174 24,158 36,887 4,453 27,216 34,861 42,185 16,337 25,692 19,689 18,821 28,595 31,378 45,157 59,911 41,223 16,334 526,359 4.29 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 477 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 396.00 POWER OPERATED EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUNE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) SURVIVOR CURVE.. IOWA 20-01 NET SALVAGE PERCENT.. +30 1960 1961 1965 1966 1967 1969 1976 1977 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 31,463.39 80.00 18,523.10 12,528.60 6,151.43 2,000.00 806.83 1,316.68 61,158.83 194,007.15 818,658.40 393,448.52 365,655.12 73,884.80 84,455.11 15,201. 00 20,808.89 63,085.03 112,924.20 100,525.54 60,516.97 14,521.41 1,071,078.20 84,146.07 177,513.37 288,438.17 90,694.34 76,734.08 239,653.69 475,730.81 122,226.83 71,102.44 284,868.22 1,038,532.85 492,431.14 1,317,919.85 331,311.55 22,024 56 12,966 8,770 4,306 1,400 494 783 33,179 101,854 415,469 192,790 172,772 33,618 36,949 6,384 8,376 24,288 41,500 35,184 20,122 4,574 318,646 23,561 46,597 70,667 20,633 16,114 46,133 83,253 19,251 9,954 34,896 109,046 43,088 92,254 17,394 ALLOC. BOOK RESERVE (4 ) 22,024 56 12,966 8,770 4,306 1,400 565 922 42,811 135,805 573,061 275,414 255,959 51,719 59,119 10,641 14,566 44,160 79,047 70,368 42,362 10,165 749,755 55,946 110,645 167,800 48,993 38,263 109,544 197,686 45,712 23,636 82,861 258,932 102,313 219,059 41,303 111-436 FUTURE BOOK ACCRUALS (5 ) 2,956 13,614 34,107 14,493 15,451 58,214 135,326 39,847 26,136 116,547 468,041 242,389 703,485 190,615 REM. LIFE (6 ) 12.00 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.50 17.00 17.50 18.00 18.50 ANUAL ACCRUAL (7) 246 1,089 2,624 1,074 1,104 4,015 9,022 2,571 1,634 7,063 27,532 13,851 39,082 10,304 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 476 of 491 IDAHO POWER COMPANY ACCOUNT 396.00 POWER OPERATED EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEA (1) ORIGINAL COST (2) REM. LIFE (6) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5 ) SURVIVOR CURVE. .IOWA 20-01 NET SALVAGE PERCENT. .+30 2009 589,518.65 20,633 48,993 363,670 19.00 2010 687,555.17 12,032 28,570 452,719 19.50 2011 33,982.08 143 340 23,447 19.88 9,925,158.51 2,162,153 4,046,557 2,901,054 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 17.6 ~i-437 ANAL ACCRUAL (7) 19,141 23,216 1,179 164,747 1.66 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 479 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 397.10 COMMUICATION EQUIPMENT - TELEPHONE CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JU 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. 15 - SQUARE NET SALVAGE PERCENT.. 0 1993 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 9,897.52 72,227.26 114,903.96 558,720.64 405,450.47 314,724.41 344,850.07 360,374.72 1,204,044.19 514,667.71 399,948.64 488,001.50 35,903.37 319,752.36 717,445.74 222,342.62 8,740.65 6,091,995.83 9,898 72,227 114,904 521,471 351,392 251,780 252,889 240,251 722,427 274,488 186,644 195,201 11,968 85,268 143,489 29,645 583 3,464,525 ALLOC. BOOK RESERVE (4) 9,898 72,227 114,904 558,721 405,450 293,302 294,593 279,871 841,564 319,754 217,424 227,392 13,942 99,330 167,152 34,534 679 3,950,737 FUE BOOK ACCRUALS (5 ) 21,422 50,257 80,504 362,480 194,914 182,525 260,610 21,961 220,422 550,294 187,809 8,062 2,141,259 REM. LIFE (6) 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT.. 8.3 ~i-438 ANAL ACCRUAL (7) 7,141 12,564 16,101 60,413 27,845 22,816 28,957 2,196 20,038 45,858 14,447 576 258,952 4.25 Exhibit NO.1 Case No. IPC-E-12-C8 J. Spanos, IPC Page 48 of 491 YEAR (1) IDAHO POWER COMPAN ACCOUNT 397.20 COMMUNICATION EQUIPMENT - MICROWAVE CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3 ) SURVIVOR CURVE.. 15-SQUARE NET SALVAGE PERCENT.. 0 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 252,010.14 361,760.11 203,585.28 60,430.09 308,341. 43 406,141.24 900,073.10 56,742.11 164,948.87 1,702,455.42 2,114,081.82 2,447,340.58 1,332,650.02 1,319,174.52 2,302,099.79 12,208.06 259,516.21 998,212.61 2,222,045.73 2,381, 092 .17 19,804,909.30 252,010 361,760 203,585 60,430 308,341 379,064 780,066 45,394 120,962 1,134,976 1,268,449 1,305,240 621,908 527,670 767,359 3,256 51,903 133,092 148,144 39,693 8,513,302 ALLOC. BOOK RESERVE (4) 252,010 361,760 203,585 60,430 308,341 406,141 869,549 50,601 134,838 1,265,172 1,413,956 1,454,967 693,249 588,200 855,385 3,630 57,857 148,359 165,138 44,246 9,337,414 FUTE BOOK ACCRUALS (5) 30,524 6,141 30,111 437,283 700,126 992,374 639,401 730,975 1,446,715 8,578 201,659 849,854 2,056,908 2,336,846 10,467,495 REM. LIFE (6) 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 14.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 9.8 ~i-439 ANAL ACCRUAL (7) 15,262 2,047 7,528 87,457 116,688 141,768 79,925 81,219 144,672 780 16,805 65,373 146,922 158,430 1,064,876 5.38 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 481 of 491 YEAR (1 ) IDAHO POWER COMPANY ACCOUNT 397.30 COMMUICATION EQUIPMENT - RAIO CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) SURVIVOR CURVE.. 15~SQUARE NET SALVAGE PERCENT.. 0 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2007 2008 2009 2011 16,613.71 12,209.62 29,275.52 59,918.50 91,395.69 109,183.54 105,483.28 1,058,485.88 94,982.86 91,139.86 177,687.97 122,477.67 135,955.55 547,989.33 134,538.47 432,966.83 1,246.51 3,221,550.79 16,614 12,210 29,276 59,918 85,302 94,626 84,387 776,219 63,322 54,684 94,766 57,157 54,382 146,132 26,908 57,727 21 1,713,651 ALLOC. BOOK RESERVE (4 ) 16,614 12,210 29,276 59,918 91,396 102,924 91,787 844,284 68,875 59,479 103,076 62,169 59,150 158,946 29,267 62,789 23 1,852,183 FUTE BOOK ACCRUALS (5) 6,260 13,696 214,202 26,108 31,661 74,612 60,309 76,806 389,043 105,271 370,178 1,224 1,369,368 REM. LIFE (6) 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 11 .00 12.00 13.00 14.75 COMPOSITE REMAINING LIFE AND ANNUAL ACCRUAL RATE, PERCENT .. 8.0 111-40 ANAL ACCRUAL (7 ) 3,130 4,565 53,550 5,222 5,277 10,659 7,539 8,534 35,368 8,773 28,475 83 171,175 5.31 Exhibit No. 1 Case No. IPC-E-12.08 J. Spanos, IPC Page 482 of 491 IDAHO POWER COMPANY ACCOUNT 397.40 COMMUNICATION EQUIPMENT - FIBER OPTIC CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) SURVIVOR CUVE. .10-SQUARE NET SALVAGE PERCENT. .0 2000 284,371.20 284,371 284,371 2001 39,256.83 39,257 39,257 2002 335,446.24 301,902 317,723 17,723 1. 00 17,723200345,840.16 36,672 38,594 7,246 2.00 3,6232004146,266.88 102,387 107,753 38,514 3.00 12,8382005110,869.72 66,522 70,008 40,862 4.00 10,216200669,664.93 34,832 36,657 33,008 5.00 6,6022007437,031.13 174,812 183,973 253,058 6.00 42,1762008295,664.30 88,699 93,347 202,317 7.00 28,9022009336,223.24 67,245 70,769 265,454 8.00 33,1822010298,594.78 29,859 31,424 267,171 9.00 29,6862011215,007.77 5,375 5,657 209,351 9.75 21,472 2,614,237.18 1,231,933 1,279,533 1,334,704 206,420 COMPOSITE REMAINING LIFE AN ANNUAL ACCRUAL RATE,PERCENT . .6.5 7.90 ~i-441 Exhibit No. 1 Case No. IPC-E-12-Qa J. Spanos, IPC Page 483 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 398. 00 MI SCELLANEOUS EQUI PMENT CALCULTED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) SURVIVOR CURVE.. 15 - SQUARE NET SALVAGE PERCENT.. 0 1996 1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 461,840.72 461,816.78 92,679.62 112,396.01 13,724.01 305,349.45 310,460.74 116,288.14 383,790.60 247,403.50 173,515.75 1,234,348.36 211,715.69 637,267.05 65,657.31 4,828,253.73 461,841 431,027 74,144 82,423 9,149 183,210 165,578 54,268 153,516 82,467 46,271 246,870 28,228 42,487 1,095 2,062,574 ALLOC. BOOK RESERVE (4 ) 461,841 460,059 79,138 87,975 9,765 195,550 176,730 57,923 163,856 88,022 49,388 263,497 30,129 45,349 1,169 2,170,391 FUTUE BOOK ACCRUALS (5) 1,758 13,542 24,421 3,959 109,799 133,731 58,365 219,935 159,382 124,128 970,851 181,587 591,918 64,488 2,657,863 REM. LIFE (6) 1. 00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 14.75 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 10.6 ~i-442 ANAL ACCRUAL (7) 1,758 4,514 6,105 792 18,300 19,104 7,296 24,437 15,938 11,284 80,904 13,968 42,280 4,372 251,052 5.20 Exhibit No. 1 Case No. IPC-E-12-o8 J. Spanos. IPC Page 484 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 311. 00 STRUCTURES AN IMPROVEMENTS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) BOARDMA INTERIM SURVIVOR CURVE.. IOWA 100-SI PROBABLE RETIREMENT YEAR.. 12 -2020 NET SALVAGE PERCENT.. -5 1980 1985 1986 1987 1988 1989 1990 1991 1993 1994 1997 2001 2003 2004 2005 2006 2007 2008 2009 2010 2011 13,057,029.96 1,304.66 24,477.62 811.67 1,078.34 4,552.28 26,339.98 8,092.57 140,092.87 119,771. 35 21,047.06 11,159.98 85,707.54 30,569.55 38,112.97 69,706.47 90,126.34 40,843.55 3,165.45 31,527.28 4,225.51 13,809,743.00 10,485,866 1,003 18,620 610 801 3,338 19,048 5,762 96,324 80,689 13,175 6,013 41,159 13,623 15,511 25,223 28,060 10,301 579 3,156 114 10,868,975 11,142,011 1,066 19,785 648 851 3,547 20,240 6,123 102,351 85,738 13,999 6,389 43,734 14,475 16,482 26,801 29,816 10,946 615 3,353 121 11,549,093 FUTURE BOOK ACCRUALS (5) 2,567,870 304 5,916 204 281 1,233 7,417 2,375 44,746 40,022 8,100 5,329 46,258 17,623 23,537 46,390 64,817 31,940 2,708 29,750 4,316 2,951,137 REM. LIFE (6 ) 9.35 9.38 9.39 9.40 9.40 9.41 9.41 9.42 9.43 9.44 9.45 9.47 9.48 9.48 9.48 9.49 9.49 9.49 9.49 9.49 9.50 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT.. 9.4 111-443 ANAL ACCRUAL (7) 274,639 32 630 22 30 131 788 252 4,745 4,240 857 563 4,880 1,859 2,483 4,888 6,830 3,366 285 3,135 454 315,109 2.28 Exhibit No. 1 case No. IPC-E-12-Q8 J. Spanos, IPC Page 485 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 312. 20 BOILER PLANT EQUIPMENT - OTHER CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) BOARDMA INTERIM SURVIVOR CURVE.. IOWA 60 - R1 . 5 PROBABLE RETIREMENT YEAR.. 12-2020 NET SALVAGE PERCENT.. -15 1980 1983 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2011 28,102,385.39 624,131.91 28,823.09 85,795.24 9,228.45 33,824.01 10,357.61 189,610.58 93,637.88 276,244.32 232,257.16 269,348.33 388,634.84 745,426.42 82,384.86 620,155.41 147,605.60 92,329.78 323,921.84 213,355.73 2,325,492.73 132,537.55 60,039.47 115,632.67 208,332.46 196,928.49 35,608,421.82 24,337,200 527,519 23,652 69,620 7,395 26,755 8,077 145,604 70,721 204,869 168,927 191,599 269,767 503,432 53,963 377,543 85,865 50,983 168,024 102,705 1,022,578 51,848 20,206 31,506 41,206 5,897 28,567,461 23,381,520 506,804 22,723 66,886 7,105 25,704 7,760 139,886 67,944 196,824 162,294 184,075 259,174 483,663 51,844 362,718 82,493 48,981 161,426 98,672 982,423 49,812 19,413 30,269 39,588 5,665 27,445,666 FUTURE BOOK ACCRUALS (5) 8,936,223 210,947 10,423 31,778 3,508 13,193 4,151 78,166 39,740 120,857 104,802 125,675 187,756 373,577 42,899 350,461 87,253 57,198 211,084 146,687 1,691,894 102,606 49,633 102,709 199,994 220,802 13,504,019 REM. LIFE (6) 9.08 9.12 9.16 9.17 9.19 9.20 9.21 9.22 9.23 9.24 9.24 9.25 9.26 9.27 9.28 9.29 9.30 9.30 9.31 9.32 9.32 9.33 9.33 9.34 9.34 9.35 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 9.2 ~i-444 ANAL ACCRUAL (7) 984,166 23,130 1,138 3,465 382 1,434 451 8,478 4,306 13,080 11,342 13,586 20,276 40,300 4,623 37,725 9,382 6,150 22,673 15,739 181,534 10,997 5,320 10,997 21,413 23,615 1,475,702 4.14 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 486 of 491 IDAHO POWER COMPANY ACCOUNT 312.30 BOILER PLANT EQUIPMENT - RAILCARS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1 ) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) BOARDMA SURVIVOR CURVE.. IOWA 25 - R3 NET SALVAGE PERCENT.. +20 1992 540,997.71 285,301 316,490 116,308 8.52 13,6511993906.29 458 508 217 9.21 241994308,745.73 148,890 165,167 81,830 9.93 8,241 1995 522,989.19 239/822 266,039 152/352 10.67 14,279199664,718.51 28/083 31,153 20,622 11 .44 1/803200660,206.48 9,344 10/365 37,800 20.15 1,8762007230,610.34 28/706 31,844 152,644 21.11 7,231 2008 277.95 26 29 194 22.07 9 1/729,452.20 740,630 821,596 561,966 47,114 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE,PERCENT . .11.9 2.72 ~i-445 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Pag 487 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 314.00 TUBOGENERATOR UNITS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4 ) BOARDMA INTERIM SURVIVOR CURVE.. IOWA 45-S1 PROBABLE RETIREMENT YEAR.. 12-2020 NET SALVAGE PERCENT.. - 15 1980 1985 1987 1989 1990 1991 1993 1994 1995 2001 2002 2003 2004 2005 2006 2007 2009 2010 2011 8,269,644.28 521. 90 3,124.53 120,851.89 50,314.29 7,477.86 607.67 7,417.33 10,228.23 1,622,224.71 65,360.48 30,393.85 1,442,710.57 23,283.66 81,913.01 737,681.81 759,553.35 624,252.96 6,383.20 13,863,945.58 7,237,560 438 2,571 97,058 39,855 5,839 458 5,490 7,405 961,639 36,775 16,065 707,696 10,424 32,625 252,787 152,712 68,630 189 9,636,216 6,143,060 372 2,182 82,380 33,828 4,956 389 4,660 6,285 816,215 31,214 13,636 600,675 8,848 27,691 214,559 129,618 58,251 160 8,178,979 FUTURE BOOK ACCRUALS (5) 3,367,031 228 1,411 56,599 24,034 3,644 310 3,870 5,477 1,049,343 43,951 21,317 1,058,443 17,929 66,509 633,775 743,868 659,639 7,180 7,764,558 REM. LIFE (6) 8.44 8.66 8.74 8.82 8.86 8.89 8.97 9.00 9.04 9.24 9.27 9.30 9.33 9.35 9.38 9.40 9.44 9.46 9.47 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 8.9 ~i-446 ANAL ACCRUAL (7) 398,937 26 161 6,417 2,713 410 35 430 606 113,565 4,741 2,292 113,445 1,918 7,091 67,423 78,800 69,729 758 869,497 6.27 Exhibit No. 1 Case No. IPC-E-12-08 J. Spanos, IPC Page 488 of 491 IDAHO POWER COMPANY ACCOUNT 315.00 ACCESSORY ELECTRIC EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3 ) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANAL ACCRUAL (7) BOARDMA INTERIM SURVIVOR CURVE..IOWA 60-81.5 PROBABLE RETIREMENT YEAR. .12 -2020 NET SALVAGE PERCENT..-1 1980 3,905,645.58 3,020,813 3,137,779 806,923 9.01 89,559 1985 72.28 54 56 17 9.14 2 1989 7,886.27 5,573 5,789 2,176 9.23 236199319,501.07 12,917 13,417 6,279 9.31 674199441,805.73 27,136 28,187 14,037 9.33 1,505200714,585.60 4,375 4,544 10,187 9.47 1,076 2008 486,139.05 118,027 122,597 368,403 9.48 38,861 2009 87,396.55 15,378 15,973 72,297 9.48 7,626201160,651.51 1,572 1,633 59,625 9.49 6,283 4,623,683.64 3,205,845 3,329,975 1,339,945 145,822 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE,PERCENT . .9.2 3.15 ~i-447 Exhibit No. 1 Case No. IPC-E-12-Q8 J. Spanos. IPC Page 489 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 316.00 MISCELLANEOUS POWER PLAT EQUIPMENT CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) BOARDMA INTERIM SURVIVOR CURVE.. IOWA 45 - RO . 5 PROBABLE RETIREMENT YEAR.. 12-2020 NET SALVAGE PERCENT.. - 2 1980 1983 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 2004 2005 2006 2007 2008 2010 2011 669,038.93 60,097.41 17,055.89 112,202.06 8,067.69 11,224.43 74,989.64 41,291.04 127,876.89 45,824.81 123,355.26 17,043.77 7,989.65 3,373.39 170,146.66 16,630.83 75,554.22 22,398.62 15,834.00 114,463.27 14,044.17 1,748,502.63 500,023 43,828 12,076 78,542 5,579 7,664 50,467 27,378 83,354 29,338 77,429 10,468 4,786 1,967 70,827 6,320 25,556 6,512 3,720 10,720 353 1,056,907 451,022 39,533 10,893 70,845 5,032 6,913 45,521 24,695 75,185 26,463 69,841 9,442 4,317 1,774 63,886 5,701 23,052 5,874 3,355 9,669 318 953,332 FUTURE BOOK ACCRUALS (5) 231,398 21,766 6,504 43,601 3,197 4,536 30,968 17,422 55,249 20,278 55,981 7,942 3,832 1,667 109,664 11,263 54,014 16,973 12,795 107,083 14,007 830,141 REM. LIFE (6 ) 8.70 8.77 8.83 8.85 8.87 8.88 8.90 8.91 8.93 8.94 8.95 8.96 8.98 8.99 9.05 9.06 9.07 9.08 9.09 9.10 9.11 COMPOSITE REMAINING LIFE AND ANAL ACCRUAL RATE, PERCENT .. 8.9 111-448 ANAL ACCRUAL (7) 26,597 2,482 737 4,927 360 511 3,480 1,955 6,187 2,268 6,255 886 427 185 12,118 1,243 5,955 1,869 1,408 11,767 1,538 93,155 5.33 Exhibit No. 1 case NO.IPC-E-12-Q8 J. Spanos, IPC Page 490 of 491 YEAR (1) IDAHO POWER COMPANY ACCOUNT 316.50 MISCELLANEOUS POWER PLANT EQUIPMENT - MISCELLAEOUS CALCULATED REMAINING LIFE DEPRECIATION ACCRUAL RELATED TO ORIGINAL COST AS OF JUE 30, 2011 ORIGINAL COST (2 ) CALCULATED ACCRUED (3) BOARMA SURVIVOR CURVE.. IOWA 12 -L2 NET SALVAGE PERCENT.. +15 2005 2006 36,959.69 4,625.70 13,535 1,471 ALLOC. BOOK RESERVE (4 ) 18,612 2,023 20,635 FUTURE BOOK ACCRUALS (5) 12,804 1,909 14,713 REM. LIFE (6) 6.83 7.51 COMPOSITE REMAINING LIFE AN ANAL ACCRUAL RATE, PERCENT .. 6.9 41,585.39 15,006 ~i-49 ANNUAL ACCRUAL (7) 1,875 254 2,129 5.12 Exhibit NO.1 Case No. IPC-E-12-08 J. Spanos, IPC Page 491 of 491