20250530Direct Noe.pdf

RECEIVED
May 30, 2025
IDAHO PUBLIC
UTILITIES COMMISSION
BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE APPLICATION )
OF IDAHO POWER COMPANY FOR ) CASE NO. IPC-E-25-16
AUTHORITY TO INCREASE ITS RATES )
AND CHARGES FOR ELECTRIC SERVICE )
IN THE STATE OF IDAHO AND )
AUTHORITY TO IMPLEMENT CERTAIN )
MEASURES TO MITIGATE THE IMPACT )
OF REGULATORY LAG. )
IDAHO POWER COMPANY
DIRECT TESTIMONY
OF
KELLEY NOE

1 Q. Please state your name and business address .
2 A. My name is Kelley Noe . My business address is
3 1221 West Idaho Street, Boise, Idaho.
4 Q. By whom are you employed and in what capacity?
5 A. I am employed by Idaho Power Company ("Idaho
6 Power" or "Company") as a Regulatory Consultant.
7 Q. Please describe your educational background.
8 A. In May of 2004, I received a Bachelor of
9 Business Administration in Finance from Boise State
10 University. I have completed electric utility ratemaking
11 courses, including "The Basics : Practical Regulatory
12 Training for the Electric Industry, " a course offered
13 through New Mexico State University' s Center for Public
14 Utilities as well as "Introduction to Rate Design and Cost
15 of Service Concepts and Techniques" presented by Electric
16 Utilities Consultants, Inc.
17 Q. Please describe your business experience with
18 Idaho Power Company.
19 A. In September 2006, I accepted a position at
20 Idaho Power as a Financial Analyst in the Finance
21 Department . My primary duties included performing credit
22 reviews on current and prospective transmission customers
23 as well as providing the financial support for Grid
24 Operations, Planning, and Operations Analysis and
25 Development groups . In October 2010, I accepted a
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Idaho Power Company

1 Regulatory Analyst II position within the Regulatory
2 Affairs department of the Company. In 2015, I was promoted
3 to Senior Regulatory Analyst, and in 2020 was promoted to
4 my current position, Regulatory Consultant. My duties as a
5 Regulatory Consultant include gathering, analyzing, and
6 coordinating data from various departments throughout the
7 Company required for preparing jurisdictional separation
8 studies, developing complex cost-related studies, and the
9 analysis of strategic regulatory issues .
10 Q. What is the scope of your testimony in this
11 proceeding?
12 A. I am sponsoring testimony to summarize the
13 development of the system revenue requirement for purposes
14 of quantifying the Company' s rate base, revenues, and
15 expenses for the 2025 Test Year as well as quantifying the
16 Idaho Jurisdictional Revenue Requirement resulting from the
17 Jurisdictional Separation Study ("JSS") for the twelve
18 months ending December 31, 2025 .
19 Q. Have you prepared exhibits for this
20 proceeding?
21 A. Yes . I am offering the following exhibits :
22 1 . Exhibit No. 25, Major Plant Additions
23 Annualized for 2025
24 2 . Exhibit No. 26, Depreciation & Amortization
25 Annualizing Adjustments
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Idaho Power Company

1 3 . Exhibit No. 27, Summary of Payroll-Related
2 Annualizing Adjustments
3 4 . Exhibit No. 28, Development of System
4 Revenue Requirement
5 5 . Exhibit No. 29, Jurisdictional Separation
6 Study - Idaho Revenue Requirement .
7 Development of the System Revenue Requirement
8 Q. Could you briefly summarize how the Company
9 developed its 2025 Test Year?
10 A. Yes . As described in the Direct Testimonies
11 and Exhibits of Company Witnesses Ms . Paula Jeppsen and Mr.
12 Matthew T. Larkin, the development of the 2025 Test Year
13 begins with 2024 actual financial data ("2024 Actuals") .
14 The 2024 Actuals were adjusted to reflect currently
15 approved ratemaking adjustments and adjustments to Plant
16 Held for Future Use, adjustments to remove Boardman coal-
17 related plant, Bridger operations and maintenance ("O&M")
18 expenses and coal-related plant, Valmy coal-related plant,
19 Oregon regulatory expenses, intervenor funding and solar
20 program expenses, and an adjustment to include wildfire
21 mitigation ("WFM") related expenses that were deferred in
22 2024to arrive at 2024 adjusted actual financial information
23 ("2024 Base") . The 2024 Base was then adjusted to develop
24 2025 financial levels ("2025 Unadjusted Test Year") . These
25 figures were then used as the starting point for the
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Idaho Power Company

1 development of the Company' s total 2025 Test Year figures
2 used in this filing.
3 Q. Were any additional adjustments made to the
4 2025 Unadjusted Test Year amounts to reach the Company' s
5 total 2025 Test Year figures?
6 A. Yes . Exhibits 25 through 29 illustrate the
7 annualizing adjustments used to develop the total 2025 rate
8 base and net income figures used in the Company' s 2025 Test
9 Year.
10 Q. Please describe the role of annualizing
11 adjustments in this filing.
12 A. At Mr. Larkin' s direction, I performed several
13 annualizing adjustments to amounts that are incurred within
14 the Test Year but need to be reflected for the full year on
15 an ongoing basis .
16 Q. Please describe the annualizing adjustments
17 made for "Major Plant Additions . "
18 A. "Major Plant Additions, " illustrated in
19 Exhibit 25, are defined as those investments exceeding $2
20 million that will be placed in service in the Company' s
21 electric plant-in-service accounts during the calendar year
22 2025 . A month-by-month estimate of 2025 electric plant-in-
23 service and the 13-month average balances provided by Ms .
24 Jeppsen form the beginning point for the analysis .
25 Annualizing adjustments are applied only to the 2025 plant
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Idaho Power Company

1 additions that qualify as Major Plant Additions to
2 establish the amount of investment that would have been
3 recorded had the plant been in service throughout the
4 entire year.
5 As reflected in Exhibit 25, the difference between
6 non-annualized and annualized amounts, as illustrated in
7 column 8 - Net Annualizing Adjustments, is the $213, 863, 281
8 annualizing adjustment for the Company' s electric plant-in-
9 service investment in this filing. Additional annualizing
10 adjustments associated with Major Plant Additions include
11 $169, 640 in property taxes (column 11 - Annual Composite
12 Property Tax) and $112, 609 in property insurance (column 13
13 - Annual Insurance Expense) .
14 Q. How did you determine the Depreciation &
15 Amortization Annualizing Adjustments?
16 A. Depreciation and amortization expenses
17 presented in Exhibit 26 are calculated on a month-by-month
18 basis during 2025 and summarized in the column entitled
19 "Non-Annualized Depreciation Expense" (column 4) . The
20 expenses for December 2025 are multiplied by twelve to
21 calculate the "Annualized Depreciation Expense" (column 3) .
22 The difference between these two columns equals the
23 "Annualizing Adjustment" (column 5) of $6, 970, 289
24 depreciation expense and $329, 198 amortization expense .
25 Adjustments of $3, 485, 145 to Accumulated Depreciation and
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Idaho Power Company

1 $164, 599 to Accumulated Amortization, illustrated as the
2 "Reserve Adjustment" (column 6) , are conventionally
3 computed as half the expense amounts .
4 Q. Were there any additional labor-related
5 annualizing adjustments?
6 A. Yes . As set forth in Exhibit No 27, Summary of
7 Payroll-Related Annualizing Adjustments, there are two
8 additional labor-related annualizing adjustments in this
9 filing totaling $8, 011, 310 .
10 The first adjustment utilizes 2024 actual labor data
11 as a proxy to estimate 2025 payroll at a year-end level .
12 Therefore, an annualizing adjustment based upon actual 2024
13 labor was calculated and used as a proxy to adjust the 0&M
14 labor total for the 2025 Test Year. After applying the
15 Company' s 0&M and benefit loading percentages, the
16 annualizing adjustment is $1, 724, 869 .
17 The second adjustment of $6, 286, 441 reflects the
18 projected December 2025 salary structure adjustment of 3
19 percent. This adjustment was applied to the annualized 2025
20 payroll .
21 Q. How is Exhibit No . 28, Development of System
22 Revenue Requirement organized?
23 A. Exhibit No. 28 provides the development of the
24 adjusted total electric system rate base and net income for
25 the test year ending December 31, 2025 .
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Idaho Power Company

1 The first set of data, displayed in column 3 labeled
2 "2024 Actual", represents the unadjusted 2024 actual
3 results of operations provided by Ms . Jeppsen. The
4 adjustments proposed by the Company for purposes of
5 developing the 2025 adjusted total electric system combined
6 rate base and net income are shown in columns 4 ("2024
7 Actual Adjustments") , 6 ("Test Year Adjustments") , and 8
8 ("Annualizing Adjustment") , with the total system adjusted
9 test year rate base, expenses, and revenues summarized in
10 column 9 . The proposed adjustments and resulting base
11 amounts are set forth in columns 4 through 8 and result in
12 the 2025 test year data set in column 9, described more
13 fully as follows :
14 (1) Column 4, titled "2024 Actual Adjustments",
15 was provided by Ms . Jeppsen and Company Witness Ms . Jessica
16 G. Brady. It reflects currently approved regulatory
17 adjustments that should be applied to the 2024 actual
18 results prior to applying methods to adjust to 2025 levels,
19 as well as, adjustments to Plant Held for Future Use,
20 adjustments to remove Boardman coal-related plant, Bridger
21 0&M expenses and coal-related plant, Valmy coal-related
22 plant, Oregon regulatory expenses, intervenor funding and
23 solar program expenses, and adjustments to reflect WFM
24 related expenses deferred in 2024 thus resetting 2024
25 actual WFM -related 0&M to what it would have been absent
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Idaho Power Company

1 the deferral;
2 (2) Column 5, titled "2024 Base" is the adjusted
3 base to which the methods to create a 2025 test year were
4 applied;
5 (3) Column 6, titled "Test Year Adjustments",
6 reflects the results of the various methods from the 2025
7 Methodology Manual sponsored by Mr. Larkin and detailed in
8 his testimony, that were used to adjust totals from the
9 2024 Base to a 2025 Unadjusted Test Year.
10 (4) Column 7, titled "2025 Unadjusted Test Year",
11 includes the resulting dataset once the standard regulatory
12 adjustments and various methods were applied;
13 (5) Column 8, titled "Annualizing Adjustment",
14 includes standard annualizing adjustments, to reflect
15 changes that occur within the test year, but need to be
16 incorporated for the full year on an ongoing basis . All
17 annualizing adjustments included in this filing were
18 discussed earlier in my testimony.
19 (6) Column 9, titled "2025 Test Year", is the
20 resulting dataset for the 2025 test year (twelve months
21 ending December 31, 2025) incorporating all adjustments and
22 annualizations described above.
23 Q. How did you develop the total combined rate
24 base for the 2025 Test Year?
25 A. Page two of Exhibit No. 28 summarizes the
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Idaho Power Company

1 development of rate base components for the 2025 Test Year.
2 The total combined rate base, based on actual, unadjusted
3 2024 results was $4, 635, 208, 609 (column 3, line 68) . After
4 adjustments, the total combined rate base for the 2025 Test
5 Year increases to $5, 371, 452, 912 (column 9, line 68) .
6 Q. Have you prepared any exhibits that detail the
7 total system net income?
8 A. Yes . Page two of Exhibit No . 28 also includes
9 the development of the total system net income for the
10 twelve months ending December 31, 2025 . Operating revenues
11 are summarized on line 75 . Total operating expenses are
12 summarized on line 85 .
13 Idaho Jurisdictional Revenue Requirement
14 Q. Have you prepared an exhibit that sets forth
15 the Idaho jurisdictional revenue deficiency?
16 A. Yes . I prepared Exhibit No. 29 titled
17 "Jurisdictional Separation Study - Idaho Revenue
18 Requirement" consisting of 36 pages .
19 Q. Please describe what is included in the
20 Jurisdictional Separation Study report.
21 A. Exhibit No. 29 is the complete Jurisdictional
22 Separation Study report detailing the allocation of each
23 component of rate base, operating revenues, and expenses by
24 Federal Energy Regulatory Commission ("FERC") account
25 resulting in the Idaho jurisdictional revenue deficiency.
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Idaho Power Company

1 The JSS is organized as follows :
2 • Summary of Results
3 • Table 1 - Electric Plant in Service;
4 • Table 2 - Accumulated Provision for
5 Depreciation (and Amortization) ;
6 • Table 3 - Additions & Deductions to Rate Base;
7 • Table 4 - Operating Revenues;
8 • Table 5 - Operation & Maintenance Expenses;
9 • Table 6 - Depreciation & Amortization Expense;
10 • Table 7 - Taxes Other Than Income Taxes;
11 • Table 8 - Regulatory Debits & Credits;
12 • Table 9 - Income Taxes;
13 • Table 10 - Calculation of Federal Income Tax;
14 • Table 11 - Oregon State Income Tax;
15 • Table 12 - Idaho State Income Tax and Other
16 State Income Tax;
17 • Table 13 - Development of Labor Related
18 Allocator;
19 • Table 14 - Allocation Factors;
20 • Table 15 - Allocation Factors-Ratios .
21 Q. Please discuss the methodology used to
22 jurisdictionally separate costs in the preparation of this
23 study.
24 A. A three-step process was used to separate
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Idaho Power Company

1 costs among jurisdictions . The three steps are
2 functionalization, classification, and allocation of costs .
3 In all three steps, recognition was given to the way in
4 which costs are incurred by relating these costs to utility
5 operations .
6 Q. Would you please briefly explain what each of
7 the three steps (functionalization, classification, and
8 allocation) entails?
9 A. Functionalized costs are identified with
10 utility operating functions such as generation,
11 transmission, and distribution. Individual plant items are
12 examined and, where possible, the associated investment
13 costs are assigned to one or more operating functions .
14 Classification groups the functionalized costs into three
15 categories : demand-related, energy-related, and customer-
16 related.
17 Once total system costs are classified and assigned
18 to their appropriate functions, they are allocated among
19 jurisdictions .
20 The process of allocation is one of apportioning the
21 total system cost among jurisdictions by introducing
22 allocation factors into the process . An allocation factor
23 is a set of ratios that specify each jurisdiction' s share
24 of the total system quantity. For example, in the case of
25 energy-related costs, the allocation factor is annual
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Idaho Power Company

1 jurisdictional energy use, adjusted for losses, divided by
2 the total system energy use.
3 Once individual accounts have been allocated to the
4 various jurisdictions, it is possible to summarize these
5 into total utility rate base and net income by
6 jurisdiction. The results are stated in a summary form to
7 measure adequacy of revenues for the jurisdiction under
8 consideration. The measure of adequacy is typically the
9 rate of return earned on rate base, which is compared to
10 the requested rate of return.
11 Q. Is the methodology used to separate costs by
12 jurisdiction and calculate the Idaho jurisdictional revenue
13 requirement in the present case primarily the same
14 methodology utilized in the Company' s last general rate
15 case, Case No . IPC-E-23-11?
16 A. Yes, the Company has applied the same overall
17 methodology as in Case No. IPC-E-23-11, with one exception.
18 In this case, the allocation method for production plant
19 has been updated from a twelve coincident system peak
20 demand (12 CP) allocator to a net peak demand allocator, to
21 better reflect cost causation for generation resources .
22 Q. Why is the Company proposing to use net peak
23 demand to allocate production plant in this case?
24 A. As detailed by Company witness Mr. Riley
25 Maloney, Idaho Power proposes allocating production plant
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Idaho Power Company

1 based on net peak demand to more accurately reflect system
2 conditions during periods of greatest need. Net peak demand
3 represents the time when customer demand is highest after
4 accounting for variable energy resource ("VER") output,
5 such as solar and wind generation. While VERs may still be
6 generating during net peak periods, the amount of demand
7 that needs to be supplied by flexible resources is at its
8 highest during the net peak period, necessitating increased
9 reliance on dispatchable, firm resources to meet customer
10 demand.
11 This approach aligns with Idaho Power' s 2023
12 Integrated Resource Plan ("IRP") , which emphasizes the
13 importance of planning not only for peak-hour demands but
14 also for net-peak demands and the corresponding impact of
15 the fluctuating nature of VER output to ensure system
16 reliability. By focusing on net peak demand, Idaho Power
17 aims to ensure that production plant costs are allocated in
18 a manner that reflects the actual usage of dispatchable
19 resources during critical periods, thereby supporting a
20 reliable and efficient energy system.
21 While Idaho' s jurisdictional share under the net
22 peak method (96 . 12 percent) is similar to the 12 CP value
23 (96 . 16 percent) , net peak better reflects the times of
24 greatest system stress and aligns with the Company' s
25 current planning practices . Mr. Maloney provides further
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Idaho Power Company

1 detail on this change in his testimony.
2 Q. How have non-production demand-related costs
3 been allocated?
4 A. All other demand-related costs— were allocated
5 using the twelve-monthly coincident system peak demand (12
6 CP) method, consistent with prior practice. The demand-
7 related allocation factors used in this case are D10
8 (coincident net peak demand) , Dll (coincident system peak
9 demand) , and D60 (distribution service level peak demand) .
10 Their respective values are shown at lines 1076 through
11 1079 of Exhibit No . 29 .
12 Q. How were the energy-related expenses allocated
13 among jurisdictions?
14 A. Energy-related expenses were allocated based
15 on normalized jurisdictional kilowatt-hour sales and
16 adjusted for losses to establish energy requirements at the
17 generation level . The energy-related allocation factors
18 used in the study are designated as E10 and E99 . The
19 respective values used in these energy allocation factors
20 are shown on lines 1082 and 1083 of Exhibit No. 29 .
21 Q. What was the method by which you allocated
22 customer-related costs?
23 A. The principal customer-related expenses which
24 required allocation, were meter reading (FERC Account 902)
25 and customer accounting and billing (FERC Account 903) .
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Idaho Power Company

1 These accounts were allocated based upon a review of actual
2 costs to read meters and prepare monthly bills or
3 statements .
4 Q. What method was used to allocate certain
5 labor-related administrative and general expenses?
6 A. Administrative and general expenses were
7 allocated in accordance with functionalized wages and
8 salaries . The labor-related dollars by FERC account are
9 shown on lines 879 through 1070 with the corresponding
10 labor allocation calculation presented on line 1071 of
11 Exhibit No . 29 .
12 Q. How were the 2025 total system allocation
13 factors developed for this case?
14 A. The allocation factors in the 2025 JSS were
15 based on either the 2024 year-end data or 2025 test year
16 data. The capacity or demand-related allocation factors
17 (D10, D11, and D60) were created using the 2024 demand
18 ratios from the load research analysis applied to the 2025
19 test year energy. The energy-related allocation factors
20 were the 2025 test year load at generation level (E10) and
21 at customer level (E99) . The load data is prepared by the
22 Company' s Load Research and Forecasting Department and is
23 further described in workpapers filed by Mr. Larkin.
24 Q. Briefly describe the manner in which you
25 allocated electric plant-in-service as shown in Table 1 of
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Idaho Power Company

1 Exhibit No . 29 .
2 A. As described above, production plant was
3 allocated using net peak demand, while transmission plant
4 was allocated to each jurisdiction based on the average of
5 the twelve-monthly coincident peaks . Unless otherwise
6 noted, distribution plant was directly assigned to Idaho
7 using 2024 actual jurisdictional data.
8 Q. Please describe the manner in which you
9 allocated general electric plant-in-service.
10 A. General plant was allocated on the same basis
11 as the sum of the allocated investments in production,
12 transmission, and distribution plant.
13 Q. How have you allocated the accumulated
14 provision for depreciation and amortization of other
15 utility plant?
16 A. Accumulated provision for depreciation and
17 amortization totals, as shown on Table 2 of Exhibit No. 29,
18 were allocated based on the related plant account as
19 allocated in Table 1 .
20 Q. How did you allocate other additions to or
21 deductions from rate base?
22 A. Table 3 of Exhibit No. 29 details the
23 allocation of all other additions to or deductions from
24 rate base . Deductions from rate base include customer
25 advances for construction that were directly assigned to
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Idaho Power Company

1 customers by jurisdiction, and the accumulated deferred
2 income taxes that were allocated by plant, customer
3 advances for construction, and labor. Additions to rate
4 base include: (1) materials and supplies which were
5 functionalized and allocated by the respective plant
6 allocators, (2) fuel inventory that was allocated on the
7 basis of energy, (3) components of Idaho Energy Resources
8 Co . ("IERCo") the Company' s fuel subsidiary, which were
9 allocated based on energy, and (4) Commission-ordered
10 deferred investment was either directly assigned to a
11 specific jurisdiction or allocated based on demand.
12 All rate base items, with the exception of other
13 deferred programs and fuel stock, reflect a 13-month
14 average of ending balances or average of year-end balances .
15 Q. How did you assign the firm operating revenues
16 to each jurisdiction?
17 A. Table 4 of Exhibit No. 29 contains the firm
18 operating revenues directly assigned to each jurisdiction
19 for the test year (twelve months ending December 31, 2025) .
20 Opportunity sales and financial losses are also credited to
21 each jurisdiction in proportion to generation-level energy
22 use .
23 Other operating revenues were either allocated among
24 jurisdictions in a manner that offset related allocations
25 of rate base or, where a particular revenue item could be
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Idaho Power Company

1 associated with a specific jurisdiction, directly assigned.
2 Lastly, at the direction of Mr. Larkin I included
3 the base revenue transfer for the Power Cost Adjustment
4 ("PCA") mechanism in this table to more accurately reflect
5 the net impact to customers in the revenue requirement
6 calculation. The Direct Testimony of Ms . Brady details the
7 quantification of the revenue transfer from the PCA.
8 Q. How are operation and maintenance expenses
9 allocated to each jurisdiction?
10 A. The allocation of each 0&M expense is detailed
11 on Table 5 of Exhibit No. 29 . In general, the basis for
12 each allocation is identifiable with the source code listed
13 on Exhibit No. 29 . Demands are identified by a source code
14 beginning with a "D" prefix, energy use is identified by a
15 source code beginning with an "E" prefix, related plant is
16 identified by a line number source code, and customer-
17 weighted allocation factors begin with a "CW" prefix.
18 Q. How have you allocated depreciation expense
19 and amortization of limited term plant?
20 A. The allocation of depreciation expense and
21 amortization of limited term plant is set forth in Table 6
22 of Exhibit No. 29 . These expenses were identified by type
23 of production plant or by primary plant account for other
24 functional plant groups and allocated consistent with the
25 related plant account.
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Idaho Power Company

1 Q. How did you approach the allocation of taxes
2 other than income taxes?
3 A. As set forth in Table 7 of Exhibit No . 29,
4 taxes other than income taxes were treated individually and
5 allocated in a manner consistent with the basis by which
6 the respective taxes are assessed.
7 Q. How did you address the amortization of
8 regulatory debits and credits?
9 A. Table 8 of Exhibit No. 29 details the
10 amortization of regulatory debits and credits and were
11 directly assigned to the appropriate jurisdiction.
12 Q. Does the JSS detail how deferred income taxes
13 and investment tax credit adjustments were allocated?
14 A. Yes . The expenses shown on Table 9 of Exhibit
15 No . 29 consist of deferred income taxes and the investment
16 tax credit adjustments, which were allocated based on the
17 Company' s plant investment and net income before tax
18 adjustments . State and federal income tax liabilities are
19 also summarized on Table 9 . The income taxes shown on
20 Tables 10 through 12 were obtained from the Company' s Tax
21 Department .
22 Q. How were federal and state income taxes, shown
23 on Tables 10 through 12 of Exhibit No. 29, allocated in the
24 JSS?
25 A. The respective tax bases were developed, and
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Idaho Power Company

1 taxes were calculated directly for each jurisdiction.
2 Operating income before taxes was determined by subtracting
3 all adjusted operating expenses—except deferred income
4 taxes and investment tax credits—from adjusted operating
5 revenues . Adjusted interest expense was allocated in
6 proportion to each jurisdiction' s share of the combined
7 rate base to develop net operating income before taxes . As
8 discussed earlier in this testimony, subsequent additions
9 to or deductions from the respective tax bases were
10 allocated to each jurisdiction by aligning it with its
11 causation or fundamental association. In this manner,
12 taxable income for each jurisdiction was developed and the
13 appropriate tax rate was applied. Final tax amounts result
14 after the allocation of adjustments and tax credits . All
15 details relating to the calculation of federal, Oregon,
16 Idaho, and other state income taxes are found on Tables 10,
17 11, and 12 .
18 Q. What is the purpose of Tables 13 through 15 of
19 Exhibit No. 29?
20 A. Tables 13 through 15 of Exhibit No . 29 list
21 the principal allocation factors used in the JSS and the
22 respective jurisdictional values for each allocation
23 factor. Table 15 lists the ratios of the principal
24 allocation factors included in Table 14 .
25 Q. How was the Idaho jurisdictional revenue
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Idaho Power Company

1 deficiency developed?
2 A. The Idaho jurisdictional revenue deficiency
3 was developed using the results shown in the "Idaho Retail"
4 column on page one of Exhibit No . 29 . As summarized on
5 lines 6 through 38 of the JSS, the Company calculated
6 Idaho' s adjusted operating revenues and expenses for the
7 2025 test year, including firm jurisdictional sales of
8 approximately $1 . 52 billion. From these revenues, adjusted
9 operating expenses—including 0&M, depreciation, taxes, and
10 other regulatory items—were subtracted to determine the
11 Company' s Idaho jurisdictional net operating income . This
12 income was then compared to the revenue requirement
13 necessary to earn the authorized rate of return. The
14 difference between the required return and the return
15 generated under present rates represents the Idaho
16 jurisdictional revenue deficiency.
17 It is important to note that the JSS summary on
18 lines 6 through 38 understates total required revenues
19 because it reflects revenues related to non-fuel coal
20 recovery and the proposed increase in Hells Canyon Complex
21 ("HCC") Relicensing AFUDC recovery, but not the
22 corresponding costs . To address this, post-tax adjustments
23 were included for both the proposed recovery of HCC
24 Relicensing AFUDC and the levelized revenue requirements
25 associated with the Jim Bridger ("Bridger") and North Valmy
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Idaho Power Company

1 ("Valmy") power plants .
2 Q. How was the Idaho jurisdictional revenue
3 requirement calculated prior to applying adjustments for
4 HCC Relicensing AFUDC and the levelized revenue
5 requirements for Bridger and Valmy?
6 A. The pre-adjusted Idaho consolidated operating
7 income of $373, 701, 604 (line 26) resulted in a return on
8 rate base of 7 . 27 percent (line 27) . Based upon the
9 Company' s request for an overall rate of return of 7 . 818
10 percent provided by Company Witness Mr. Brian R. Buckham,
11 the Company' s Idaho jurisdictional net income should be
12 $402, 091, 278, as shown on line 32 . The resulting earnings
13 deficiency is $28, 389, 654, as shown on line 33 . Once
14 again, as discussed previously, this figure is understated
15 and must be adjusted because it includes revenues related
16 to non-fuel coal recovery and the proposed increase in HCC
17 Relicensing AFUDC recovery, but not the corresponding
18 costs .
19 Q. What net-to-gross or incremental income tax
20 factor did you use in developing the Idaho jurisdictional
21 revenue deficiency?
22 A. The composite incremental tax multiplier of
23 1 . 334 reflects the combination of federal, Idaho, Oregon,
24 and other applicable state tax rates . This value shown on
25 line 37 of Exhibit No. 29, was provided by the Company' s
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Idaho Power Company

1 Tax Department and was updated in this case to reflect the
2 recent change in the Idaho state tax rate .
3 Q. Why were the HCC Relicensing AFUDC and the
4 Valmy and Bridger revenue requirements added to the Idaho
5 Jurisdictional revenue deficiency calculation shown on
6 lines 40 through 42 of the JSS?
7 A. To determine the full Idaho jurisdictional
8 revenue deficiency, and at the direction of Mr. Larkin, I
9 added the HCC Relicensing AFUDC amount requested in Case
10 No . IPC-E-25-13, along with the levelized revenue
11 requirements associated with the Bridger and Valmy
12 balancing account mechanisms .
13 In prior general rate cases, the HCC Relicensing
14 AFUDC amount was added as a pre-tax gross-up line item.
15 However, due to changes in tax gross-up rates between the
16 HCC Relicensing AFUDC case and this case, it was necessary
17 to include the HCC Relicensing AFUDC as a post-tax gross-up
18 line item to ensure alignment with the amount requested in
19 Case No. IPC-E-25-13 .
20 As discussed in Mr. Larkin' s testimony, the
21 levelized revenue requirements for Bridger and Valmy were
22 added reflecting updated test year estimates of the
23 levelized Bridger and Valmy costs including a true-up of
24 prior period actuals and updated amounts for both capital
25 investment and 0&M.
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Idaho Power Company

1 Including these items ensures that the costs
2 approved for recovery are properly reflected and aligned
3 with the 2025 test year retail revenues, which include
4 revenues associated with these items .
5 Q. Were any other adjustments included in the
6 revenue requirement calculation?
7 A. Yes . At the direction of Company witness Mr.
8 Timothy Tatum, I included an adjustment to reduce the Idaho
9 jurisdictional revenue requirement to effectively remove
10 from rates certain regional employee housing and travel
11 trailer assets that were addressed in Case Nos . TPC-E-23-11
12 and IPC-E-24-07 .
13 Q. What is the resulting Idaho jurisdictional
14 revenue deficiency including all post tax gross up
15 adjustments?
16 A. The result of the Jurisdictional Separation
17 Study, as shown on page one, line 44 of Exhibit No. 29,
18 indicates a total revenue deficiency of $199 . 1 million for
19 the Idaho retail jurisdiction. This represents a required
20 13 . 09 percent increase in normalized Idaho jurisdictional
21 revenues .
22 Q. Does this conclude your testimony?
23 A. Yes, it does .
24
NOE, DI 24
Idaho Power Company

1 DECLARATION OF KELLEY NOE
2 I, Kelley Noe, declare under penalty of perjury
3 under the laws of the state of Idaho :
4 1 . My name is Kelley Noe. I am employed by
5 Idaho Power Company as a Regulatory Consultant.
6 2 . On behalf of Idaho Power, I present this
7 pre-filed direct testimony and Exhibit Nos . 25 through 29
8 in this matter.
9 3 . To the best of my knowledge, my pre-filed
10 direct testimony and exhibits are true and accurate .
11 I hereby declare that the above statement is true to
12 the best of my knowledge and belief, and that I understand
13 it is made for use as evidence before the Idaho Public
14 Utilities Commission and is subject to penalty for perjury.
15 SIGNED this 30th day of May 2025, at Boise, Idaho.
16
17 Signed:
18 Kelley Noe
NOE, DI 25
Idaho Power Company

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-25-16
IDAHO POWER COMPANY
NOE3 DI
TESTIMONY
EXHIBIT NO. 25

(1) (2) (3) H) (s) (s) f/1 (8) (g) (1.) (11) (12) (13)
mpeM
Prajem -1
Per$10oo
11-Oen.Plain erabilMAaseaemem secunrysnlrennmenl Pmjen Bo" ],61ag - $0.5z]
erabilMAssessmem secunrysnnanwmenl Prgem BORA - $0.5n
ability Assessmem secunry Enlrenmment?gem BORA May,x�i225 - $0 f
ability Assessmem secunry Ennanm-Pr BORA - $0.5n
BOR- abiiiry Assessmem secunry Enbancement Pq BORA - $0.5R]
ability Assessmem secunry Enbanmment Prgem BORA Au pus.2025 - $0..7 1.
abiiiry Assessmem secunryEnnancemem Prpem BORA - $0 f
ability Assessmem secunryEnnanmmem Prpem BORA - $0.52]
abiiiry Alssessme secunrysnnancemenI wgem BORA - $a.52]
11 BORA2al 1 TNrealantl vul_Nliry Assessmem secunry Enlrenwment Plw BORA Decemlur,2a25 _ 12 3e .2 ID - $0.52] 0
pg a C.o,re dtl ,t OMSupgratleaep.ld SVPpraiad Apd,2025 ID $0.527 4.
12 g m ValleyErergy-ar Prejem100MWNe38-Itlalw Power 2, 2, - $0.52]
IE_ $a.52]
1] GINT2G0838 ppy Va E_,y sarage Prejem 100 MW N838-Itlalw Parer Au-22025 C8! a 1. 28] ID - $0.52] 0
51pl Prejem150MWGIN85]-Indutles Network Upgratles - $0.52]
$a.52] 45
2' GINT-57 sarage Prejem 150MW Gme5]-Indutl.-IUpgratlea - $0.52]
May,2025 - $0.5R]
sara0e Prajxa 150 MW GIN 65]-Iridutles Network Upgretles Jure,.25 ID $0.5 7
24
13 Cogenere. GINT2 ey tart r 200 Mw GINTN58]Mclutles NMwo p9 es May,2025 ID $0.5R7
27
R1-TM1armalP $0.5R7 a374
$0.P 2,113
1 Generelw Rwnntl Overbaul Decem 12025 NV CA- $0.52]
31 21-Tkarmal Pmtluaon Tows. n,nl,3go 2,132,415 25,58- W118 13-
32
R3 Y P.-U.HOB1-33 AFPRUI.Ilbineantl Gmwator ReluNlsbmentty, 1 - $0 f a]55
27:1. 31:.7 $0.U7 17
cH=--33 AF Ru123Turbinearm Geremtar ReluNlsbment - $0 f
$0.U7 12
13
cNpe15oo33 AFPR U123 Turbinearm Geremtar ReluNlsbment - $1.52]
$0.2]
312
a cNpe15oo33 Al U123 Turbinearm Geremtor ReluNlsbment December.2025 %714 12 ]C] 8.ge] ID - $0.527 5
a0 C PR220oo2 CLPR Pmmwck p mein December,2025 3,521,Ow 12 27Cem 3,2w,181 ID - $0.52] 1,711
IIP May,2025 $0f
$0.2]
21
$0.5n
$0.R]
$a.2]
$a.52]
47 OR $a.2]
as _pRlmool O:PR -op
cmmols Motlemiueon BOP December.2025 t0,e23 1R 81] B.e0s OR O.a5a% a5 $a.52] 5
curry Pgem-Fmong a Tecbrewgy - $a.52] 2,41
curry Prajem-Fer�one aTecnrewgy - $0.52]
CurryP W-FmongaTecbrewgy - $If
52 sKPR22aatt cJ smkervA se_Hn P jem-FerongaTecbrewgy December,M25 33%- 12 28100 31- ID - $0 185
cJ stoke rvA secunry Prajem-Boat Banwm December,2025 3.az88]3 ID $0.5n
24 rnna.Protl DNPR Re-h Paint Unn N 2 HGP Inspection rvovem 12a25 ID $0.527
Rs Ba n wY(Happyvalley BEssj-2025 Peak Capadrynesourm 11 - $a.52] 2
Pvtt30oo1 HPVY(Ha YValley BEssj-2025 Peak capaorynaewrw y, 5 ID $0.527
RB-Hyd.wce piIMITr InR wall Remetliation - $0.52] 16
BS_ pftWTralninR-lRemetlimion - $0.527
�'1'-5 - $0.52]
pillwnain�lrg wall Remetliat�lon May,2025 - $0.52]
ay N Il Reme W- Jure,.25 ID $0.5R]
69
31 P v 1 Omar rvA sewriry Fsejem-Fencbg a Temndogy Decem 12025 OR 0.a08x $0.527 _2 211
32-Transmissi LPDA T131,<BkV bus,PFTSMCPG,PFTSMLPG,I-PNGE,AFTSFRMT relaying/cmmals.Replace 4-FLBdewitcbes. April,2025 1 - $If
s Upgretle sLPDA T131,<BkV bus,PFTSMCPG,PFTSMLPG,PFTSPNGE,PFTSFRMT relaying/controls.Replace 4fikV FCBdswitcbes. May.2025 - $0
LPDA T131,411 bus,ITSMCPG,PFTSMLPG,PFTSPNGE,PFTSFRMT relaying/cormals.Replace CBkV FLBNewitcbes. - $0.5R]
]e Al 20001 Al Upgwtle sL T131,<BkV bus,PFTSMCPG,PFTSMLPG,PFTSPNGE,PFTSFRMT relaying/cormala.Re place 4fikV FCBdswitcbes. July.M255 C8! ] 215 251 ID - $0.52] 0
re relay an T-182,iekV bus,181kV bus,BKFTHULN.antl BKFTFOLO 1 - $0.5P
am relays an T-182,iekV bus,181kV bus,BKFT-HULN,antl BKFTFOLO May,2025 - $0.52]
]B BKFT17-BKFT Replace 11.tramfermer an p rerelay an T-182,iekV bus,-W bus,BKFT-HULN.antl B-OCO y, 25 e]e ] - 0]3 ID - $0.52] 0
M BOMT150002 BOMT C.-wo row 2-V bint-A.antl one rew 138kV line terminal December,2025 4,3.- 12 335350 4,ON,317 ID - $0.57 2,-
CARI -1
emnfigure Melon 1:21 ', l3`VV transmission ham ONTO w-RO (Bass) (e.salj 941) (3j $0.57 (o)
e, 5, 1, $0.52]
83 CARO180001 CARO RxenSgure sar�len tar new 13SkV tranem wim ham ONTOw-0 .25 May,n e]e 5 53g 33] OR O.008% 1 $0.52] 0
1161,417 1, - $a.52]
$a.2]
$a.52]
e] KPRT220001 KPRT t38kvantl 23ok1 AU Break Replacements v ber,-5 4- g t,a5s ins ID - $a.527 2
ee ONTO180WC ONTO Motli0cabere at ONTO arnew 13-V Tran i-Lure w CARO Jan ,, 25 2,332,872 1 2,153A20 17$,452 OR O.008% 733 $0.52] tb
Exhibit No.25
Case No. IPC-E-25-16
K. Noe, IPC
Page 1 of 3

(1) (2) (3) H) (s) (s) f/1 (8) (e) (101 (11) (12) (13)
peM _
Prgect mpM
I INPer ElBoo
3 1-11 E 111
eo orviola600a orvio moainwearre«orvio to newt3fl-kv Trananicam unemcuto nprrcM1zoz55 aTa a wT zio oR a.aoax 1 Eo.Szi o
B61q 66v.ma osaq xB,marne assmiamd line Al'wim new sFs ear breakers - E
:21ESR p sakv B61q,663n ana o6aq FCB,ana rM1e assmmrea line relays wim new sFs pebreakers —1,—1 ID E
33-Tranami.ai (1.776) (tet63e1 Its1371 - E 0.ss� (a)
E 0.ss 51.
s� Tat22006ot Tate Rebaa ease BericM1m Emmen i3eicv Tran_Nmum N.-2025 22,— 11 M taess ID - E 0.ss7 10
(n,as) w1z7e) (1ss E ssss 7 (23)
iiii
p� EE 0ossam
101 ia23tot ia23 R 3,�ss t.1m E OR 0ia ry s ar l v Tmmaon u .25 11 E 1
1ss iaat2106ot iaat yxa p m Rapers Dawes Nccan Baku Dacem 12— 4,156e65 12 31— 3,fl36oa5 ID - E 0..7 2,oz1
1. T9021NON is62 Rebaia BDBNDR-seamemmme Bdse Be«b-DRunmapoim al 2aakv i..(maee 2) ocmber.M25 2,—,,214 10 ata,aea 2,ilill a io - Eo.ss7 t,oea
leas M p m repirs,Base—Midpwlzwkv Dace-12025 ID E 0.ss7
as-un re - E 0.ss7
07
nbwm un re nd wakaswua�ea vain new—R—H.ttansmi«im ure rvovember,2a25 ID E O.ss7
ill
111 41 Didnbuec AR ARTn—second<6-12.5Tmnsmrmer,a d51— p kand Feeder y epiacemem mruiTN 011A 0—ola4,0— December,M25 a,M,,55e 12 512oaa a,taa,525 io - E o.ss7 3,235
:kVnew(o-am worv)o-ansmrm«meaer11,11s,remya ana�d3s - E 0.ss7
113 BKCKt]0001 BKCK craven smeanm l3fl.ix.ikVtram Ca.12.5kV,new(eam(ADN)transm—teed«breakers,.1y ana PB'a December,2a25 133380 12 16261 123,128 ID - E—7 65
Relays naram ,&CC'irsuillm«11 Pmreaiomemo-els,i-13aa T-135remys 1 - E a.ss7 314
.DWL5 remys gprrcb2a255 - E 6.527
116 cowl.xsss0t cow6 New cormei Bai a� pi«e Feeaar Rdaye,Trararmrme1-1-1�il imenopl«Pm�ec��mmcmo-ais,i-lxaT-135 reisys n1ay,2a25 e33 5 na 35e iD - $a 7 o
117 DRKE180001 DRNE Bald new t38kv Durkee deem 0—2025 3,.3— 10 831,657 2,772,191 OR 1,316% 36,47e E s.ss7 —
E s.ss
ardE�andm E a.52y
1m H-70001 NFw p T061 WlhN.14-ATmnsmrmer New011—d 01 Redmereand vard Eayandm December,2a25 Tee 12 61 — OR 1,316% 1D E s.ss7 0
121 JNCN220001 JNCNT131 and T1324a.fl Nvgimnsmrmar R«mcem«m December,2— 5,226a2B 12 42,186 4,e26zx ID - Es.ss7 25a1
1. 1ASG220001 Aso lramn s«md mem—amt—N.Fees«odaways(Asc015 era wsool 6 December,2625 5,3.,411 12 4ee,035 4,11-17 ID - E s.ss7 2,578
E 0.ss
may,2ss5 - E 0.ss7
125 S-210001 S1Pry p at,ca2am oa34 dare,.25 T4T 6 aD2 ia5 ID - E 0.ss7 0
1m sTRD2moo1 sTRD Md 2na 015 and 016 tins smbms December,2625 3,fl5653a 12 2s61e5 3,ssa,— ID - E 0.ss7 t,a.
Buiiairg,-ots era-Ots Feeaas 3, 3, - E I f t
Buiiairg,-0t5 era-ots Feeders - E 0.ss�
VA E 0.2]
il. 6w lndall Newu.eNvq wvu Tlss Transmrm«,m.._d,cmtrd_dir 015era-016 Feed«s p bar,2025 ID E o.ssy
131 41-Di-bubcn smeona Taal a3266asa 11,026,5ss ss,187,ass sT,ess ts,eaa
ce-overneaax eraaMemaad,BlS my,.25 7
msm dotscro Dio-ibdn .5D Md 2a� ID E 627 51-Deneral Pia gmiry Dam Cerra I-C) - E 6.527
13e BCW0230005 old sddia p dnmiry Dam CC
D«ember,2625 26Da2 12 2.001 2<,oes ID - E s.ss7 13
E s.ss7
a,3666e3 - E 6.527 1,0107
E s.ss
may,2ss5 - E 0.ss7
E 0.5n71
E 0.ss
EIfE 0.ss
E 0.2]
E 0.ss
p ms tamer December,2625 ID E 0.ss7
11 53-Tr napednion Equipment:
p Cemomm Prone p bar,2a25 ID E 0.ss7
1. 53-Tranapednion EquipD mDentT ta�FR a,]<]— 2,—,311 6,]<l— - 3553
1. —1 E E155,547 E E Mall E 11
Pro1«1ID a p n d securiry'imprevememe I BaRA«bsmem.m
sxurirymncM1g�upg msyamm,ae wen ae doer m.s«reac s«unryco�moN being
PC
eroded,doer,Gerry,delay,nolM,mmimr,artl respond�o pommel s«unry Nreaceuems wM1icM1
11 h1-11abiiirynssessmem secunry Enba««nmr Prged BORq E 10,5ae,6ss E a $ spM1ysiw secmunrya proacM1
ms uparaaeae pan d svP preied E E 1 E72%.
d1l $ S z $
paary rsso�memms«summer peak beainnma 2o2s limemonradion)
6arape Pmjeu 156 MW GIp 65T7.1
1 d Network Up « $ S 1 $
2oo1-Cwix56i-inaua«rvdwork pa « $ E z $
$ 17,22 E 1 E , Y nimgas
$ S $ ab aim
$ S472,705 $ abiiiry
r Remmisbmmt $ S a $ abiiiry
E S E biliry
oePRle000l oBPR controls dademizaem BOP S 2,a2t,5n E 1,as6,6e7 $ aw,aeo ReuabilM
Exhibit No.25
Case No. IPC-E-25-16
K. Noe, IPC
Page 2 of 3

(11 (2) ($) N) (s) (6) f/1 (e) IN N.) (11) (12) N1)
I'll NI paM
Frajad —1
Fer$1000
iDbpraedaeeressea lmplemenutlondcapltal Improvements at thect stoke oem.An Dy DON IPC end FERC rah l—lee
mirM con et Ct stoke Plem ens swlrcnysm.T eck seeress multipletlreek by
urlry re wellssouer Collemvdy,
curry mmrolsbeing imgl�emenlee eree,I,n.' uareow IPCoDetle abed serer eenysedey,nauy.mWtorraM reaPPneu
SKPR220011 CJ SNke NA SecueN Praed-Fencln98TecM1rokgY $ �,T18,656 $ 2,226,802 $ 6540,954 Po oriel Y ed events wnm 9 iu lP P Ye IsecueN approttM1.
inb pra(eaaderesses lmplemenlaeon arcepitel improvements at the ct stoke Dam.An t a a FERI mgulebrs lee
en .M Darters e e eeysi$ned u allow 1POkt Deeeedeter eenly,ere dday,POlenualse uroily uredeventstwnlcn alilgn wlu
$ $ $
w(RappyvalleyTeE s)�znzs veakwcapamy Reswrce $ b 6 at,166 $ summer peek Deglmm�g 2025
p ion $ g1,866450
asvozl000l ali p y tg Il Remeemaon $ 4,s1�o�s $ 4,158554 $ na szl c p ce
ysb dais sre Dy ban IPc ere FERC regulators
yarevlDe OMow prgttls seeress multiple rnreeu by
y due CCN camera sysNm,es well es orner measures.c
ow IPCbDenerdded.abet,eery,eddy,nalry,mavtor,ere p b
2
mnapgr $ $ $ Y edeventa wNe g wIR Pn I—,,Iy apP aapn.
t AFmfsN"T upg see -11111 scl as us,AFTSMCPG.PFTS-McvG A—PNGE.—FRMT McRnglwrNoh,Replace 46kV PCII-1es. $ $ $ 1,046,25
NIMT
kv Dps,. -NNw,ane6uFT.Poco $ s,u,s6�e $ $ an rN
=r6mind $ $ $ paclN
pn hpm aNTomcaRo $ m,�e $ $ co amanoena
$ 1,614 $ $ Rellablllry
$ .,,T18 $ 2 $ 215114
0610.06aA ere 1o64 4N lma reeys wlu new SF6 gas breakers $ $ 2 $ abIlllryce
$ $ 2 $ ablllry
n1—ire sm�sslotnsLnelne $ 16,513,194 $ T $ ablllry
�rs GmPw-MccaII156kv $ $ $ ablllry
RMe Segmentmue ease Renm-GRAM-Mldpolrt1u123IMN Ill(Pnaze2t $ $ $ ellablllry
2 T9061ayeadr-pecum repairs,Bax lSencn-Mlepalnt 230kv $ $ $ Rellablllry
- $ $ $ ellablllry
re aiarmer,Aete SMvarncpBanOx anecFeeeerand.y Replacement for ARTN o11A,0t2A,01eA,0t4A $ $ $ ellablllry
ew(hom wON)trenslormer,rmier Dreexers,relays ere AB's $ $ $ ellablllry
we 1,
lnterrupler vrdectionlconvols,T-1a4flT-135 relays $ $ $ ellablllry
$ $ $ ellablllry
�tTMVATrenslarmer New allA are 0t2A Reclosers are Var0 ENlenslm $ $ $ ellablllry
$ $ $ ellablkry
New Feeeercdaways N6G015 ere w5G016 $ 5.-'5' $ $ ellablllry
$ $ $ ellablllry
$ $ $ Rellablllry
I. n0 016 Feeders $ 7,eW,3z6 $ $ ellablllry
I—sia0 Abe 2ne transformer eta Metaaee,015 are 0t6 cvcues oismbuuon Ines $ 2.-.1 $ t y25451 $ t 1466w Rellablllry
nler(AMOC) $ 99],133 $ $ P Y ms. Dame
$ $ $ p_I
vARlzs000s p to viers $ I.]4ZP�le $ 2 $ PI—S.new evcrart p ecurrent avcren th.1 Doer veers dd
Tea $ $155: $
Exhibit No.25
Case No. IPC-E-25-16
K. Noe, IPC
Page 3 of 3

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-25-16
IDAHO POWER COMPANY
NOE DI
TESTIMONY
EXHIBIT NO. 26

Idaho Power Company
Depreciation&Amortization Annualizing Adjustments
Estimated 2025
(1) (2) (3) (4) (5) (6)
Annualized Non-Annualized
Depreciation Depreciation Annualizing Reserve
Account Account Description Expense Expense Adjustment Adjustment
30100 Organization
30200 Franchises and Consents 1,749,265 1,694,219 55,046 27,523
30300 Miscellaneous Intangible Plant 8,268,272 7,994,121 274,152 137,076
TOTAL INTANGIBLE PLANT-AMORT 10,017,537 9,688,339 329,198 164,599
31020 Land and Land Rights 2,382 2,382 (0) -
31100 Structures and Improvements 661,611 659,674 1,937 968
31200 Boiler Plant Equipment 7,729,207 7,575,423 153,784 76,892
31400 Turbogenerator Units 2,609,358 2,603,204 6,154 3,077
31500 Accessory electric Equipment 274,131 271,429 2,702 1,351
31600 Misc Power Plant Equipment 394,626 393,131 1,495 748
TOTAL STEAM PRODUCTION PLANT 11,671,316 11,505,244 166,072 83,036
33000 Land and Land Rights - -
33100 Structures and Improvements 6,730,977 6,542,531 188,446 94,223
33200 Reservoirs,Dams,Waterways 5,404,449 5,348,626 55,823 27,911
33300 Waterwheel,Turbines,Generato 11,837,926 11,570,349 267,576 133,788
33400 Accessory Electric Equipment 2,856,183 2,807,308 48,875 24,438
33500 Misc Power Plant Equipment 1,052,077 1,032,864 19,213 9,606
33600 Roads,Railroads and Bridges 753,812 729,016 24,796 12,398
TOTAL HYDRO PRODUCTION PLANT 28,635,423 28,030,694 604,729 302,365
34000 LAND AND LAND RIGHTS
34100 Structures and Improvements 4,123,270 4,105,805 17,465 8,732
34200 Fuel Holders,Producers,Acces 291,167 291,052 115 57
34300 Prime Movers 11,079,246 11,012,344 66,902 33,451
34400 Generators 1,736,665 1,738,007 (1,343) (671)
34500 Accessory Electric Equipment 2,774,135 2,769,265 4,870 2,435
34600 Misc Power Plant Equipment 264,259 261,497 2,762 1,381
TOTAL OTHER PRODUCTION PLANT 20,268,742 20,177,970 90,772 45,386
35020 Land and Land Rights 503,605 482,779 20,827 10,413
35200 Structures and Improvements 2,492,714 2,475,194 17,520 8,760
35300 Station Equipment 11,813,553 11,620,798 192,754 96,377
35400 Towers and Fixtures 3,259,280 3,177,215 82,066 41,033
35500 Poles and Fixtures 7,343,470 7,020,104 323,367 161,683
35600 Overhead Conductors,Devices 4,854,348 4,709,834 144,513 72,257
35900 Roads and Trails 2,845 2,814 31 15
TOTAL TRANSMISSION PLANT 30,269,816 29,488,738 781,077 390,539
36022 ROW Renewal Cost 29,090 29,090 - -
36100 Structures and improvements 1,614,289 1,545,401 68,887 34,444
36200 Station Equipment 7,431,539 7,206,751 224,789 112,394
TOTAL SUBSTATION EQUIPMENT 9,074,918 8,781,242 293,676 146,838
363 Battery Storage
TOTAL BATTERY STORAGE - - - -
36400 Poles,Towers and Fixtures 7,704,073 7,443,921 260,152 130,076
36500 Overhead Conductors,Devices 4,096,334 3,989,387 106,947 53,474
36600 Underground Conduit 1,537,936 1,448,476 89,461 44,730
36700 Underground Conductors,Device 9,090,268 8,542,030 548,239 274,119
36800 Line Transformers 16,789,509 16,347,484 442,024 221,012
36900 Services 1,263,425 1,250,687 12,737 6,369
37000 Meters 6,607,639 6,448,710 158,929 79,465
37100 Installations,Cust Premises 233,072 233,012 60 30
37300 Street Lighting,Signal System 230,327 230,357 (31) (15)
TOTAL DISTRIBUTION LINES 47,552,582 45,934,064 1,618,518 809,259
38700 Energy Storage Plant 25,696,132 22,731,469 2,964,664 1,482,332
TOTAL ENERGY STORAGE PLANT 25,696,132 22,731,469 2,964,664 1,482,332
38900 Land and Land Rights
39000 Structures and Improvements 4,215,703 4,036,590 179,113 89,557
39100 Office Furniture,Equipment 7,148,369 7,084,370 63,999 31,999
39200 Transportation Equipment 72,444 72,444 - -
39300 Stores Equipment 433,576 415,200 18,376 9,188
39400 Tools,Shop,Garage Equipment 890,574 876,221 14,353 7,176
39500 Laboratory Equipment 888,405 876,964 11,441 5,721
39600 Power Operated Equipment - - - -
39700 Communication Equipment 5,859,117 5,725,285 133,831 66,916
39800 Miscellaneous Equipment 863,500 833,832 29,668 14,834
TOTAL GENERAL EQUIPMENT PLANT 20,371,688 19,920,907 450,781 225,391
DEPR ON ELECTRIC PLANT IN SERVICE 193,540,616 186,570,327 6,970,289 3,485,145
Amortization of Disallowed Costs (296,299) (296,299) - -
TOTAL DEPRECIATION&AMORTIZATION 203,261,854 195,962,367 7,299,487 3,649,744
203,261,853.84 195,962,366.83
Exhibit No. 26
Case No. IPC-E-25-16
K. Noe, IPC
Page 1 of 1

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-25-16
IDAHO POWER COMPANY
NOE3 DI
TESTIMONY
EXHIBIT NO. 27

Summary of Adjustments to 2025
Operating Expenses
(1)
Line Source
No. Page Amount
1 A Operating Payroll - Annualizing Adjustment $ 1,724,869
2 A 2025 Salary Structure Adjustment 6,286,441
3 Total Adjustments $8,011,310
Exhibit No. 27
Case No. IPC-E-25-16
K. Noe, IPC
Page 1 of 4

Idaho Power Company A
Detail of Adjustments to 2024
Operating Expenses
(1)
Line Source
No. Page Amount
Operating Payroll(Various accts)
1 1 Actual Total Year 2024 ST Payroll 254,532,165
2 1 Actual December 2024 ST Payroll 19,763,230
3 Annualized December 2024(Dec times 13) x 13 256,921,986
4 Increase Over 2024 Actual 2,389,821
5 1 O&M Percentage 48.24%
6 Annualized December 2025 O&M ST payroll 1,152,801
7 2 Benefit Loading Percent 49.62%
8 Annualized December 2025 O&M ST w/Loading $ 1,724,869
2025 Operating Payroll SSA(Various accts)
9 A 2025 O&M Labor FCST $ 207,823,155
10 Annualized December 2024 O&M ST w/Loading $ 1,724,869
11 Total 2025 O&M Labor 209,548,025
12 December 2025 Structured Salary Adjustment 3.00% 6,286,441
13 Adjustment to Operating Expense for SSA $ 6,286,441
Exhibit No. 27
Case No. IPC-E-25-16
K. Noe, IPC
Page 2 of 4

2024 ACTUAL for 111 - STRAIGHT TIME PAYROLL source Page 1
By Account and Month
1-O&M Adjusted 2-Construction 242 Accounts Bridger Labor 1-O&M Total
Jan,24 8,074,330 4,820,343 830,512 5,692,692 19,417,878 12,913 8,087,243
Feb,24 10,263,442 6,502,282 1,077,699 1,657,921 19,501,344 16,167 10,279,609
Mar,24 14,412,208 9,122,702 1,521,604 4,113,754 29,170,267 26,669 14,438,876
Apr,24 9,983,455 6,509,861 1,072,552 1,907,628 19,473,496 16,971 10,000,426
May,24 9,881,791 6,364,899 1,062,566 2,242,196 19,551,452 16,007 9,897,798
Jun,24 9,033,399 5,988,944 1,055,490 3,583,277 19,661,110 12,159 9,045,558
Jul,24 8,782,990 5,801,619 969,944 4,118,589 19,673,142 12,285 8,795,275
Aug,24 14,437,139 9,398,699 1,576,259 4,025,390 29,437,488 20,044 14,457,183
Sep,24 9,245,619 6,151,091 1,008,242 3,212,005 19,616,958 12,398 9,258,017
Oct,24 9,635,338 6,480,361 1,104,559 2,353,802 19,574,060 13,376 9,648,714
Nov,24 9,728,647 6,701,081 1,070,367 2,191,645 19,691,740 11,313 9,739,960
Dec,24 9,302,804 5,626,942 1,030,030 3,803,454 19,763,230 12,867 9,315,671
122,781,162 79,468,825 13,379,825 38,902,354 254,532,165 183,169 122,964,330
%of Total 48.24% 31.22% 5.26% 15.28% 100.00%
Annualized December(x 13) 256,921,986
Annualized Payroll Growth Factor 0.94%
Exhibit No. 27
Case No. IPC-E-25-16
K. Noe, IPC
Page 3 of 4

2025 Actual Benefits Loading % Source Page 2
FEB YTD 2025
111 -STRAIGHT TIME PAYROLL 23,083,119
131 - INDIRECT BENEFIT LOADING 8,816,375 38.19%
140-TAXES-EMPLOYER PAID 2,638,435 11.43%
Subtotal loading 11,454,809 49.62%
Exhibit No. 27
Case No. IPC-E-25-16
K. Noe, IPC
Page 4 of 4

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-25-16
IDAHO POWER COMPANY
NOE3 DI
TESTIMONY
EXHIBIT NO. 28

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
4 SUMMARY OF RESULTS
5 RATE OF RETURN UNDER PRESENT RATES
6 TOTAL COMBINED RATE BASE 4,635,208,609 (179,072,637) 4,456,135,972 705,103,402 5,161,239,374 210,213,537 5,371,452,912
7
8 OPERATING REVENUES
9 FIRM JURISDICTIONAL SALES 1,552,780,508 (137,231,603) 1,415,548,905 167,420,709 1,582,969,614 0 1,582,969,614
10 SYSTEM OPPORTUNITY SALES 142,669,958 (107,983,608) 34,686,350 66,433,672 101,120,022 0 101,120,022
11 OTHER OPERATING REVENUES 127,514,967 (27,580,701) 99,934,265 (1,165,841) 98,768,424 0 98,768,424
12 TOTAL OPERATING REVENUES 1,822,965,433 (272,795,912) 1,550,169,520 232,688,540 1,782,858,060 0 1,782,858,060
13 OPERATING EXPENSES
14 OPERATION&MAINTENANCE EXPENSES 1,259,284,350 (311,709,045) 947,575,305 148,727,175 1,096,302,480 8,123,919 1,104,426,399
15 DEPRECIATION EXPENSE 214,706,954 (49,614,950) 165,092,004 21,182,024 186,274,028 6,970,289 193,244,317
16 AMORTIZATION OF LIMITED TERM PLANT 7,616,790 0 7,616,790 2,086,567 9,703,357 329,198 10,032,555
17 TAXES OTHER THAN INCOME 16,155,738 10,434,427 26,590,165 (12,637,609) 13,952,556 169,640 14,122,195
18 REGULATORY DEBITS/CREDITS 5,389,667 191,050 5,580,717 10,402,322 15,983,039 0 15,983,039
19 PROVISION FOR DEFERRED INCOME TAXES (74,296,567) 0 (74,296,567) 59,880,007 (14,416,560) 0 (14,416,560)
20 INVESTMENT TAX CREDIT ADJUSTMENT 94,674,793 0 94,674,793 (43,784,522) 50,890,271 0 50,890,271
21 FEDERAL INCOME TAXES 4,689,346 (621,880) 4,067,467 30,125,578 34,193,045 (3,107,538) 31,085,507
22 STATE INCOME TAXES 6,049,578 (159,144) 5,890,434 (10,687,192) (4,796,758) (795,245) (5,592,003)
23 TOTAL OPERATING EXPENSES 1,534,270,650 (351,479,542) 1,182,791,108 205,294,350 1,388,085,457 11,690,262 1,399,775,720
24 OPERATING INCOME 288,694,783 78,683,630 367,378,413 27,394,190 394,772,603 (11,690,262) 383,082,341
25 ADD: IERCO OPERATING INCOME 2,180,587 0 2,180,587 742,413 2,923,000 0 2,923,000
26 CONSOLIDATED OPERATING INCOME 290,875,370 78,683,630 369,559,000 28,136,603 397,695,603 (11,690,262) 386,005,341
27 RATE OF RETURN UNDER PRESENT RATES 6.28% 8.29% 7.19%
28
29 DEVELOPMENT OF REVENUE REQUIREMENTS
30 RATE OF RETURN @ 10.40/c ROE 7.818% 7.818% 7.818% 7.818% 7.818% 7.818% 7.818%
31
32 RETURN 362,360,976 (13,999,140) 348,361,836 55,121,997 403,483,833 16,433,604 419,917,437
33 EARNINGS DEFICIENCY 71,485,606 (92,682,770) (21,197,164) 26,985,394 5,788,230 28,123,866 33,912,096
34 ADD:OTHER 0 0 0 0 0 0 0
35 EARNINGS DEFICIENCY WITH OTHER 71,485,606 (92,682,770) (21,197,164) 26,985,394 5,788,230 28,123,866 33,912,096
36
37 NET-TO-GROSS TAX MULTIPLIER 1.334 1.334 1.334 1.334 1.334 1.334 1.334
38 REVENUE DEFICIENCY 95,351,075 (123,624,913) (28,273,837) 35,994,468 7,720,631 37,513,019 45,233,650
39
40 ADD:CWIP-HCC RELICENSING AFUDC(IDAHO) 8,803,453 0 8,803,453 29,708,787 38,512,240 0 38,512,240
41 ADD:VALMY LEVELIZED REVENUE REQUIREMENT 0 0 0 37,746,361 37,746,361 0 37,746,361
42 ADD:BRIDGER LEVELIZED REVENUE REQUIREMENT 0 0 0 85,208,499 85,208,499 0 85,208,499
43 LESS:EMPLOYEE HOUSING AND TRAILER REV REQ 0 0 0 211,956 211,956 0 211,956
44 REVENUE DEFICIENCY WITH HCC AFUDC,VALMY,AND BRIDGER 104,154,528 (123,624,913) (19,470,384) 188,446,160 168,975,776 37,513,019 206,488,795
45
46 FIRM JURISDICTIONAL RETAIL REVENUES 1,552,780,508 (137,231,603) 1,415,548,905 167,420,709 1,582,969,614 0 1,582,969,614
47 PERCENT INCREASE REQUIRED 13.04%
48
49 SALES AND WHEELING REVENUES REQUIRED 1,656,935,037 (260,856,516) 1,396,078,521 355,866,869 1,751,945,390 37,513,019 1,789,458,408
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 1 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
50 SUMMARY OF RESULTS
51 DEVELOPMENT OF RATE BASE COMPONENTS
52 ELECTRIC PLANT IN SERVICE
53 INTANGIBLE PLANT 123,491,169 0 123,491,169 38,292,120 161,783,289 3,712,160 165,495,448
54 PRODUCTION PLANT 2,988,706,027 (675,233,862) 2,313,472,165 324,579,306 2,638,051,472 102,985,186 2,741,036,657
55 TRANSMISSION PLANT 1,438,934,807 (9,279,582) 1,429,655,224 138,822,546 1,568,477,770 50,767,148 1,619,244,918
56 DISTRIBUTION PLANT 2,376,303,498 0 2,376,303,498 162,968,562 2,539,272,059 41,464,354 2,580,736,413
57 GENERAL PLANT 547,995,454 0 547,995,454 35,102,838 583,098,292 14,934,434 598,032,726
58 TOTAL ELECTRIC PLANT IN SERVICE 7,475,430,955 (684,513,444) 6,790,917,510 699,765,371 7,490,682,881 213,863,281 7,704,546,162
59 LESS:ACCUM PROVISION FOR DEPRECIATION 2,737,822,021 (543,940,861) 2,193,881,159 70,925,932 2,264,807,091 3,485,145 2,268,292,236
60 AMORT OF OTHER UTILITY PLANT 47,893,738 0 47,893,738 6,619,735 54,513,473 164,599 54,678,072
61 NET ELECTRIC PLANT IN SERVICE 4,689,715,196 (140,572,583) 4,549,142,613 622,219,704 5,171,362,317 210,213,537 5,381,575,855
62 LESS:CUSTOMER ADV FOR CONSTRUCTION 49,466,595 (10,000,000) 39,466,595 (17,450,604) 22,015,991 0 22,015,991
63 LESS:ACCUM DEFERRED INCOME TAXES 376,441,348 0 376,441,348 (29,070,878) 347,370,470 0 347,370,470
64 ADD:PLT HLD FOR FUTURE+ACQUIS ADJ 13,823,953 (2,554,851) 11,269,101 2,690,768 13,959,869 0 13,959,869
65 ADD:WORKING CAPITAL 230,211,736 (45,505,941) 184,705,795 11,110,976 195,816,770 0 195,816,770
66 ADD:CONSERVATION+OTHER DFRD FROG. 90,779,507 (439,262) 90,340,245 17,997,820 108,338,065 0 108,338,065
67 ADD:SUBSIDIARY RATE BASE 36,586,160 0 36,586,160 4,562,652 41,148,812 0 41,148,812
68 TOTAL COMBINED RATE BASE 4,635,208,609 (179,072,637) 4,456,135,972 705,103,402 5,161,239,374 210,213,537 5,371,452,912
69
70 DEVELOPMENT OF NET INCOME COMPONENTS
71 OPERATING REVENUES
72 SALES REVENUES 1,695,450,466 (245,215,211) 1,450,235,255 233,854,381 1,684,089,636 0 1,684,089,636
73 OTHER OPERATING REVENUES 127,514,967 (27,580,701) 99,934,265 (1,165,841) 98,768,424 0 98,768,424
74 TOTAL OPERATING REVENUES 1,822,965,433 (272,795,912) 1,550,169,520 232,688,540 1,782,858,060 0 1,782,858,060
75 OPERATING EXPENSES
76 OPERATION&MAINTENANCE EXPENSES 1,259,284,350 (311,709,045) 947,575,305 148,727,175 1,096,302,480 8,123,919 1,104,426,399
77 DEPRECIATION EXPENSE 214,706,954 (49,614,950) 165,092,004 21,182,024 186,274,028 6,970,289 193,244,317
78 AMORTIZATION OF LIMITED TERM PLANT 7,616,790 0 7,616,790 2,086,567 9,703,357 329,198 10,032,555
79 TAXES OTHER THAN INCOME 16,155,738 10,434,427 26,590,165 (12,637,609) 13,952,556 169,640 14,122,195
80 REGULATORY DEBITS/CREDITS 5,389,667 191,050 5,580,717 10,402,322 15,983,039 0 15,983,039
81 PROVISION FOR DEFERRED INCOME TAXES (74,296,567) 0 (74,296,567) 59,880,007 (14,416,560) 0 (14,416,560)
82 INVESTMENT TAX CREDIT ADJUSTMENT 94,674,793 0 94,674,793 (43,784,522) 50,890,271 0 50,890,271
83 FEDERAL INCOME TAXES 4,689,346 (621,880) 4,067,467 30,125,578 34,193,045 (3,107,538) 31,085,507
84 STATE INCOME TAXES 6,049,578 (159,144) 5,890,434 (10,687,192) (4,796,758) (795,245) (5,592,003)
85 TOTAL OPERATING EXPENSES 1,534,270,650 (351,479,542) 1,182,791,108 205,294,350 1,388,085,457 11,690,262 1,399,775,720
86 OPERATING INCOME 288,694,783 78,683,630 367,378,413 27,394,190 394,772,603 (11,690,262) 383,082,341
87 ADD: IERCO OPERATING INCOME 2,180,587 0 2,180,587 742,413 2,923,000 0 2,923,000
88 CONSOLIDATED OPERATING INCOME 290,875,370 78,683,630 369,559,000 28,136,603 397,695,603 (11,690,262) 386,005,341
89
90 NET POWER SUPPLY COSTS:
91 ACCT 447/SURPLUS SALES+LOSS REV (142,669,958) 107,983,608 (34,686,350) (66,433,672) (101,120,022) 0 (101,120,022)
92 ACCT 501/FUEL-THERMAL PLANTS 97,426,834 (31,903,834) 65,523,000 60,278,910 125,801,910 0 125,801,910
93 ACCT 547/FUEL-DIESEL+OTHER 161,764,878 (42,111,203) 119,653,675 (41,718,620) 77,935,055 0 77,935,055
94 ACCT555/NON-FIRM PURCHASES+LOSSES 186,031,205 (86,566,184) 99,465,021 61,942,764 161,407,785 0 161,407,785
95 ACCT 555/DEMAND RESPONSE INCENTIVES 8,952,862 1,287,141 10,240,003 (897,245) 9,342,758 0 9,342,758
96 ACCT 555/CSPP PURCHASES 216,985,378 (2,536,623) 214,448,755 12,270,689 226,719,444 0 226,719,444
97 SUBTOTAL 528,491,199 (53,847,095) 474,644,104 25,442,826 500,086,930 0 500,086,930I
98 ACCT 577/13ATTERY STORAGE RENTS 0 0 0 21,546,000 21,546,000 0 21,546,000
99 ACCT 565/TRANS OF ELECTRICTY BY OTHERS 13,112,150 (2,849,011) 10,263,139 2,698,784 12,961,923 0 12,961,923
100 TOTAL NET POWER SUPPLY COSTS 541,603,349 56,696,106 484,907,243 49,687,610 534,594,853 0 534,594,853
101 OTHER O&M
102 TOTAL O&M EXPENSES 1,259,284,350 (311,709,045) 947,575,305 148,727,175 1,096,302,480 8,123,919 1,104,426,399
103 LESS: ACCT 501/FUEL-THERMAL PLANTS (97,426,834) 31,903,834 (65,523,000) (60,278,910) (125,801,910) 0 (125,801,910)
104 ACCT 547/FUEL-DIESEL+OTHER (161,764,878) 42,111,203 (119,653,675) 41,718,620 (77,935,055) 0 (77,935,055)
105 ACCT555/NON-FIRM PURCHASES+LOSSES (186,031,205) 86,566,184 (99,465,021) (61,942,764) (161,407,785) 0 (161,407,785)
106 ACCT555/DEMAND RESPONSE INCENTIVES (8,952,862) (1,287,141) (10,240,003) 897,245 (9,342,758) 0 (9,342,758)
107 ACCT 555/CSPP PURCHASES (216,985,378) 2,536,623 (214,448,755) (12,270,689) (226,719,444) 0 (226,719,444)
108 SUBTOTAL 588,123,194 (149,878,343) 438,244,851 56,850,677 495,095,527 8,123,919 503,219,446
109 ACCT 577/BATTERY STORAGE RENTS 0 0 0 (21,546,000) (21,546,000) 0 (21,546,000)
110 ACCT 565/TRANS OF ELECTRICTY BY OTHERS (13,112,150) 2,849,011 (10,263,139) (2,698,784) (12,961,923) 0 (12,961,923)
111 ACCT416/MERCHANDISING EXPENSE (5,418,390) 0 (5,418,390) 12( 8,655) (5,547,045) 0 (5547045)
112 NET OTHER O&M 569,592,654 147,029,332 860,808,173 32,477,237 455,040,559 8,123,919 463:164:478
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 2 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
113 TABLE 1-ELECTRIC PLANT IN SERVICE
114 INTANGIBLE PLANT
115 301-ORGANIZATION $ 5,703 0 5,703 0 5,703.01 0 5,703
116302-FRANCHISES&CONSENTS 56,257,191 0 56,257,191 9,106,906 65,364,096.62 297,439 65,661,535
117 303-MISCELLANEOUS 67,228,275 0 67,228,275 29,185,215 96,413,489.09 3,414,721 99,828,210
118
119 TOTAL INTANGIBLE PLANT 123,491,169 0 123,491,169 38,292,120 161,783,289 3,712,160 165,495,448
120
121 PRODUCTION PLANT
122 310-316/STEAM PRODUCTION 994,527,822 (675,233,862) 319,293,960 16,831,892 336,125,852 25,588,975 361,714,827
123 330-336/HYDRAULIC PRODUCTION 1,151,234,675 0 1,151,234,675 56,845,913 1,208,080,589 21,031,244 1,229,111,833
124340-346/OTHER PRODUCTION-BASELOAD 402,361,639 0 402,361,639 (176,215) 402,185,424 0 402,185,424
125 340-346/OTHER PRODUCTION-PEAKERS 232,361,883 0 232,361,883 (101,763) 232,260,120 1,866,450 234,126,570
126
127 TOTAL PRODUCTION PLANT 2,780,486,019 (675,233,862) 2,105,252,157 73,399,828 2,178,651,985 48,486,670 2,227,138,655
128
129 TRANSMISSION PLANT
130 350/LAND&LAND RIGHTS-SYSTEM SERVICE 43,513,608 0 43,513,608 1,326,166 44,839,774 1,207,163 46,046,937
131 DIRECT ASSIGNMENT 0 0 0 0 0 0 0
132 TOTAL ACCOUNT350 43,513,608 0 43,513,608 1,326,166 44,839,774 1,207,163 46,046,937
133 0
134 352/STRUCTURES&IMPROVEMENTS-SYSTEM SERVICE 114,639,693 0 114,118,971 16,311,534 130,430,504 1,585,738 132,016,242
135 DIRECT ASSIGNMENT 658 0 658 (0) 658 0 658
136 TOTAL ACCOUNT 352 114,640,351 (520,722) 114,119,629 16,311,534 130,431,162 1,585,738 132,016,900
137 0
138 353/STATION EQUIPMENT-SYSTEM SERVICE 511,445,887 0 502,687,027 31,672,681 534,359,707 15,426,403 549,786,110
139 DIRECT ASSIGNMENT 36,494 0 36,494 0 36,494 0 36,494
140 TOTAL ACCOUNT 353 511,482,380 (8,758,860) 502,723,520 31,672,681 534,396,201 15,426,403 549,822,604
141 0
142 354/TOWERS&FIXTURES-SYSTEM SERVICE 238,745,929 0 238,745,929 26,824,768 265,570,697 6,629,158 272,199,855
143 DIRECT ASSIGNMENT 0 0 0 0 0 0 0
144 TOTAL ACCOUNT 354 238,745,929 0 238,745,929 26,824,768 265,570,697 6,629,158 272,199,855
145
146 355/POLES&FIXTURES-SYSTEM SERVICE 252,930,447 0 252,930,447 22,630,953 275,561,400 14,457,917 290,019,317
147 DIRECT ASSIGNMENT 33,842 0 33,842 0 33,842 0 33,842
148 TOTAL ACCOUNT 355 252,964,288 0 252,964,288 22,630,954 275,595,242 14,457,917 290,053,159
149
150 356/OVERHEAD CONDUCTORS&DEVICES-SYSTEM SERVICE 277,156,664 0 277,156,664 40,053,129 317,209,792 11,456,371 328,666,163
151 DIRECT ASSIGNMENT 26,495 0 26,495 (0) 26,495 0 26,495
152 TOTAL ACCOUNT 356 277,183,159 0 277,183,159 40,053,128 317,236,287 11,456,371 328,692,658
153
154 359/ROADS&TRAILS-SYSTEM SERVICE 405,091 0 405,091 3,316 408,407 4,398 412,805
155 DIRECT ASSIGNMENT 0 0 0 0 0 0 0
156 TOTAL ACCOUNT 359 405,091 0 405,091 3,316 408,407 4,398 412,805
157
158 TOTAL TRANSMISSION PLANT 1,438,934,807 (9,279,582) 1,429,655,224 138,822,546 1,568,477,770 50,767,148 1,619,244,918
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 3 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
159 TABLE 1-ELECTRIC PLANT/N SERVICE
160
161 DISTRIBUTION PLANT
162 360/LAND&LAND RIGHTS-SYSTEM SERVICE 10,353,487 0 10,353,487 871,811 11,225,298 0 11,225,298
163 PLUS:ADJUSTMENT FOR CIAC 1,071,862 0 1,071,862 0 1,071,862 0 1,071,862
164 NET DISTRIBUTION PLANT+CIAC 11,425,349 0 11,425,349 871,811 12,297,160 0 12,297,160
165
166 361/STRUCTURES&IMPROVEMENTS-SYSTEM SERVICE 67,540,932 0 67,540,932 5,233,647 72,774,579 5,952,977 78,727,556
167 PLUS:ADJUSTMENT FOR CIAC 9,043,182 0 9,043,182 0 9,043,182 0 9,043,182
168 NET DISTRIBUTION PLANT+CIAC 76,584,114 0 76,584,114 5,233,647 81,817,761 5,952,977 87,770,738
169
170362/STATION EQUIPMENT-SYSTEM SERVICE 353,195,909 0 353,195,909 28,163,606 381,359,515 24,382,990 405,742,505
171 PLUS:ADJUSTMENT FOR CIAC 51,658,911 0 51,658,911 0 51,658,911 0 51,658,911
172 NET DISTRIBUTION PLANT+CIAC 404,854,821 0 404,854,821 28,163,606 433,018,427 24,382,990 457,401,417
173
174 363/STORAGE BATTERY EQUIPMENT-DISTRIBUTION 0 0 0 0 0 0 0
175 TOTAL BATTERY STORAGE EQUIPMENT 0 0 0 0 0 0 0
176
177 364/POLES,TOWERS&FIXTURES 352,535,104 0 352,535,104 29,843,661 382,378,765 0 382,378,765
178 365/OVERHEAD CONDUCTORS&DEVICES 169,354,436 0 169,354,436 10,044,766 179,399,203 50,111 179,449,314
179 366/UNDERGROUND CONDUIT 57,822,452 0 57,822,452 3,638,135 61,460,587 1,305,655 62,766,242
180 367/UNDERGROUND CONDUCTORS&DEVICES 355,207,606 0 355,207,606 23,284,684 378,492,290 7,499,205 385,991,496
181 368/LINE TRANSFORMERS 801,431,707 0 801,431,707 52,372,586 853,804,294 2,158,141 855,962,435
182 369/SERVICES 73,561,924 0 73,561,924 1,858,218 75,420,142 70,924 75,491,066
183 370/METERS 122,680,701 0 122,680,701 7,736,918 130,417,620 44,351 130,461,971
184 371/INSTALLATIONS ON CUSTOMER PREMISES 5,664,038 0 5,664,038 (62,669) 5,601,369 0 5,601,369
185 373/STREET LIGHTING SYSTEMS 6,955,201 0 6,955,201 (16,804) 6,938,397 0 6,938,397
186
187 TOTAL DISTRIBUTION PLANT 2,376,303,498 0 2,376,303,498 162,968,562 2,539,272,059 41,464,354 2,580,736,413
188
189 387/ENERGY STORAGE PLANT 208,220,008 0 208,220,008 251,179,479 459,399,487 54,498,516 513,898,003
190 TOTAL ENERGY STORAGE PLANT 208,220,008 0 208,220,008 251,179,479 459,399,487 54,498,516 513,898,003
191
192 GENERAL PLANT
193 389/LAND&LAND RIGHTS 21,077,174 0 21,077,174 242,308 21,319,481 0 21,319,481
194 390/STRUCTURES&IMPROVEMENTS 181,685,433 0 181,685,433 13,584,597 195,270,030 6,317,667 201,587,697
195 391/OFFICE FURNITURE&EQUIPMENT 42,184,736 0 42,184,736 76,432 42,261,168 0 42,261,168
196 392/TRANSPORTATION EQUIPMENT 135,023,659 0 135,023,659 14,390,770 149,414,429 6,748,462 156,162,891
197 393/STORES EQUIPMENT 8,331,615 0 8,331,615 2,260,686 10,592,301 0 10,592,301
198 394/TOOLS,SHOP&GARAGE EQUIPMENT 16,080,467 0 16,080,467 910,035 16,990,502 0 16,990,502
199 395/LABORATORY EQUIPMENT 16,570,089 0 16,570,089 394,001 16,964,090 0 16,964,090
200 396/POWER OPERATED EQUIPMENT 32,305,601 0 32,305,601 357,399 32,662,999 0 32,662,999
201 397/COMMUNICATIONS EQUIPMENT 83,614,803 0 83,614,803 2,468,543 86,083,346 1,868,304 87,951,650
202 398/MISCELLANEOUS EQUIPMENT 11,121,877 0 11,121,877 418,068 11,539,945 0 11,539,945
203
204 TOTAL GENERAL PLANT 547,995,454 0 547,995,454 35,102,838 583,098,292 14,934,434 598,032,726
205
206 TOTAL ELECTRIC PLANT IN SERVICE 7,475,430,955 (684,513,444) 6,790,917,510 699,765,371 7,490,682,881 213,863,281 7,704,546,162
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 4 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
207 TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION
208 (684,513,444)
209 PRODUCTION PLANT
210 310-316/STEAM PRODUCTION 726,961,729 (537,271,158) 189,690,571 9,239,168 198,929,739 83,036 199,012,775
211 330-336/HYDRAULIC PRODUCTION 533,822,181 0 533,822,181 21,794,965 555,617,147 302,365 555,919,511
212 340-346/OTHER PRODUCTION-BASELOAD 83,547,966 0 83,547,966 1,858,872 85,406,838 25,392 85,432,230
213 340-346/OTHER PRODUCTION-PEAKERS 65,787,597 0 65,787,597 1,463,718 67,251,316 19,994 67,271,310
214 TOTAL PRODUCTION PLANT 1,410,119,473 (537,271,158) 872,848,316 34,356,723 907,205,039 430,787 907,635,826
215
216 TRANSMISSION PLANT
217 350/LAND&LAND RIGHTS 10,639,093 0 10,639,093 469,836 11,108,928 10,413 11,119,342
218352/STRUCTURES&IMPROVEMENTS 36,666,064 (477,173) 36,188,891 1,960,628 38,149,520 8,760 38,158,280
219353/STATION EQUIPMENT 140,097,660 (6,192,530) 133,905,130 659,060 134,564,189 96,377 134,660,566
220 354/TOWERS&FIXTURES 82,748,037 0 82,748,037 2,070,577 84,818,614 41,033 84,859,646
221 355/POLES&FIXTURES 82,965,614 0 82,965,614 2,184,940 85,150,554 161,683 85,312,238
222 356/OVERHEAD CONDUCTORS&DEVICES 90,953,906 0 90,953,906 160,605 91,114,511 72,257 91,186,768
223 359/ROADS&TRAILS 300,145 0 300,145 2,800 302,945 15 302,960
224 TOTAL TRANSMISSION PLANT 444,370,520 (6,669,704) 437,700,816 7,508,445 445,209,262 390,539 445,599,800
225
226 DISTRIBUTION PLANT
227 360/LAND&LAND RIGHTS 267,784 0 267,784 29,090 296,874 0 296,874
228 361/STRUCTURES&IMPROVEMENTS 17,762,904 0 17,762,904 1,074,914 18,837,818 34,444 18,872,261
229 362/STATION EQUIPMENT 77,486,613 0 77,486,613 2,839,522 80,326,135 112,394 80,438,529
230 363/STORAGE BATTERY EQUIPMENT 0 0 0 0 0 0 0
231 364/POLES,TOWERS&FIXTURES 148,011,935 0 148,011,935 (2,556,167) 145,455,767 130,076 145,585,843
232 365/OVERHEAD CONDUCTORS&DEVICES 59,160,723 0 59,160,723 (1,590,036) 57,570,687 53,474 57,624,160
233 366/UNDERGROUND CONDUIT 20,488,072 0 20,488,072 422,975 20,911,047 44,730 20,955,777
234 367/UNDERGROUND CONDUCTORS&DEVICES 111,132,220 0 111,132,220 3,840,151 114,972,371 274,119 115,246,490
235 368/LINE TRANSFORMERS 206,219,528 0 206,219,528 4,071,141 210,290,670 221,012 210,511,682
236369/SERVICES 46,190,304 0 46,190,304 661,156 46,851,459 6,369 46,857,828
237 370/METERS 41,165,567 0 41,165,567 2,431,549 43,597,116 79,465 43,676,580
238 371/INSTALLATIONS ON CUSTOMER PREMISES 840,646 0 840,646 57,628 898,274 30 898,304
239 373/STREET LIGHTING SYSTEMS 622,297 0 622,297 120,727 743,024 (15) 743,009
240 TOTAL DISTRIBUTION PLANT 729,348,593 0 729,348,593 11,402,649 740,751,242 956,097 741,707,339
241
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 5 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
242 TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION
243
244 3871 ENERGY STORAGE PLANT 6,225,488 0 6,225,488 16,332,603 22,558,091 1,482,332 24,040,423
245 TOTAL ENERGY STORAGE PLANT 6,225,488 0 6,225,488 16,332,603 22,558,091 1,482,332 24,040,423
246
247 GENERAL PLANT
248 389/LAND&LAND RIGHTS 0 0 0 0 0 0 0
249 390/STRUCTURES&IMPROVEMENTS 37,797,480 0 37,797,480 551,336 38,348,816 89,557 38,438,373
250 391/OFFICE FURNITURE&EQUIPMENT 19,015,347 0 19,015,347 793,463 19,808,811 31,999 19,840,810
251 392/TRANSPORTATION EQUIPMENT 25,754,749 0 25,754,749 (4,220,434) 21,534,315 0 21,534,315
252 393/STORES EQUIPMENT 1,686,253 0 1,686,253 349,624 2,035,878 9,188 2,045,066
253 394/TOOLS,SHOP&GARAGE EQUIPMENT 5,547,071 0 5,547,071 539,340 6,086,411 7,176 6,093,588
254 395/LABORATORY EQUIPMENT 7,372,650 0 7,372,650 478,111 7,850,761 5,721 7,856,482
255 396/POWER OPERATED EQUIPMENT 6,442,822 0 6,442,822 968,670 7,411,492 0 7,411,492
256 397/COMMUNICATIONS EQUIPMENT 36,482,870 0 36,482,870 2,011,770 38,494,641 66,916 38,561,556
257 398/MISCELLANEOUS EQUIPMENT 4,657,607 0 4,657,607 149,930 4,807,537 14,834 4,822,372
258 TOTAL GENERAL PLANT 144,756,852 0 144,756,852 1,621,810 146,378,663 225,391 146,604,053
259
260 AMORTIZATION OF DISALLOWED COSTS 3,001,094 0 3,001,094 (296,299) 2,704,795 0 2,704,795
261
262 TOTAL ACCUM PROVISION DEPRECIATION 2,737,822,021 (543,940,861) 2,193,881,159 70,925,932 2,264,807,091 3,485,145 2,268,292,236
263
264 AMORTIZATION OF OTHER UTILITY PLANT
265 302/FRANCHISES AND CONSENTS 20,196,693 0 20,196,693 1,597,926 21,794,619 27,523 21,822,142
266 303/MISCELLANEOUS INTANGIBLE PLANT 27,697,045 0 27,697,045 5,021,809 32,718,854 137,076 32,855,930
267
268 TOTAL AMORT OF OTHER UTILITY PLANT 47,893,738 0 47,893,738 6,619,735 54,513,473 164,599 54,678,072
269
270 TOTAL ACCUM PROVISION FOR DEPR
271 &AMORTIZATION OF OTHER UTILITY PLANT 2,785,715,758 (543,940,861) 2,241,774,897 77,545,667 2,319,320,564 3,649,744 2,322,970,308
272
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 6 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
273 TABLE 3-ADDITIONS&DEDUCTIONS TO RATEBASE 0
274 0
275 NET ELECTRIC PLANT IN SERVICE 4,689,715,196 (140,572,583) 4,549,142,613 622,219,704 5,171,362,317 210,213,537 5,381,575,855
276 LESS: 0
277 252 CUSTOMER ADVANCES FOR CONSTRUCTION
278 POWER SUPPLY 0 0 0 0 0 0 0
279 OTHER 49,466,595 (10,000,000) 39,466,595 (17,450,604) 22,015,991 0 22,015,991
280 TOTAL CUSTOMER ADV FOR CONSTRUCTION 49,466,595 (10,000,000) 39,466,595 (17,450,604) 22,015,991 0 22,015,991
281
282 ACCUMULATED DEFERRED INCOME TAXES
283 1901 ACCUMULATED DEFERRED INCOME TAXES
284 CUSTOMER ADVANCES FOR CONSTUCTION (5,523,205) 0 (5,523,205) 633,895 (4,889,310) 0 (4,889,310)
285 OTHER (13,771,055) 0 (13,771,055) 27,064 (13,743,991) 0 (13,743,991)
286 TOTAL ACCOUNT190 (19,294,260) 0 (19,294,260) 660,959 (18,633,301) 0 (18,633,301)
287 2811 ACCELERATED AMORTIZATION 0 0 0 0 0 0
288 2821 OTHER PROPERTY 380,506,492 0 380,506,492 (33,445,729) 347,060,763 0 347,060,763
289 2831 OTHER 15,229,116 0 15,229,116 3,713,892 18,943,008 0 18,943,008
290 TOTAL ACCUM DEFERRED INCOME TAXES 376,441,348 0 376,441,348 (29,070,878) 347,370,470 0 347,370,470
291
292 NET ELECTRIC PLANT IN SERVICE 4,263,807,253 (130,572,583) 4,133,234,670 668,741,186 4,801,975,857 210,213,537 5,012,189,394
293 ADD:
294 WORKING CAPITAL
295 1511 FUEL INVENTORY 32,888,604 (14,508,528) 18,380,076 11,110,976 29,491,052 0 29,491,052
296 154&1631 PLANT MATERIALS&SUPPLIES
297 PRODUCTION-GENERAL 14,786,327 (146,964) 14,639,363 0 14,639,363 0 14,639,363
298 TRANSMISSION-GENERAL 61,464,481 (610,907) 60,853,574 0 60,853,574 0 60,853,574
299 DISTRIBUTION-GENERAL 81,974,467 (814,759) 81,159,708 0 81,159,708 0 81,159,708
300 OTHER-UNCLASSIFIED 9,770,181 (97,108) 9,673,074 0 9,673,074 0 9,673,074
301 TOTAL ACCOUNT 154&163 167,995,457 (1,669,738) 166,325,719 0 166,325,719 0 166,325,719
302 1651 PREPAID ITEMS
303 AD VALOREM TAXES 3,141,176 (3,141,176) 0 0 0 0 0
304 OTHER PROD-RELATED PREPAYMENTS 1,378,052 (1,378,052) 0 0 0 0 0
305 INSURANCE 12,506,385 (12,506,385) 0 0 0 0 0
306 PENSION EXPENSE 0 0 0 0 0 0 0
307 PREPAID CONTRACTS 5,993,859 (5,993,859) 0 0 0 0 0
308 MISCELLANEOUS PREPAYMENTS 6,308,203 (6,308,203) 0 0 0 0 0
309 TOTAL ACCOUNT 165 29,327,675 (29,327,675) 0 0 0 0 0
310 WORKING CASH ALLOWANCE 0 0 0 0 0 0 0
311
312 TOTAL WORKING CAPITAL 230,211,736 (45,505,941) 184,705,795 11,110,976 195,816,770 0 195,816,770
313
314 NET ELECTRIC PLANT IN SERVICE 4,494,018,989 (176,078,524) 4,317,940,465 679,852,162 4,997,792,627 210,213,537 5,208,006,164
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 7 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
315 TABLE 3-ADDITIONS&DEDUCTIONS TO RATEBASE
316
317 NET ELECTRIC PLANT IN SERVICE 4,494,018,989 (176,078,524) 4,317,940,465 679,852,162 4,997,792,627 210,213,537 5,208,006,164
318 ADD:
319 105/PLANT HELD FOR FUTURE USE
320 HYDRAULIC PRODUCTION 104,155 (104,155) 0 0 0 0 0
321 TRANS LAND&LAND RIGHTS 3,149,978 93,517 3,243,495 2,499,426 5,742,921 0 5,742,921
322 TRANS STRUCTURES&IMPROVEMENTS 166,669 (166,669) 0 0 0 0 0
323 TRANS STATION EQUIPMENT 32,400 (32,400) 0 0 0 0 0
324 DIST LAND&LAND RIGHTS 7,206,173 206,203 7,412,377 206,360 7,618,737 0 7,618,737
325 DIST STRUCTURES&IMPROVEMENTS 498,106 (498,106) 0 0 0 0 0
326 DIST STATIONS EQUIPMENT 0 0 0 0 0 0 0
327 GEN LAND&LAND RIGHTS 0 0 0 0 0 0 0
328 GEN STRUCTURES&IMPROVEMENTS 0 0 0 0 0 0 0
329 OTHER PRODUCTION LAND&LAND RIGHTS 2,053,241 (2,053,241) 0 0 0 0 0
330 TOTAL PLANT HELD FOR FUTURE USE 13,210,723 (2,554,851) 10,655,872 2,705,786 13,361,658 0 13,361,658
331
332 114/115-ASSET EXCHANGE ACQUISITION ADJUSTMENT 613,229 0 613,229 (15,018) 598,211 0 598,211
333
334 DEFERRED PROGRAMS:
335 182/ CONSERVATION PROGRAMS
336 IDAHO DEFERRED CONSERVATION PROGRAMS 0 0 0 0 0 0 0
337 OREGON DEFERRED CONSERVATION PROGRAMS 0 0 0 0 0 0
338 TOTAL CONSERVATION PROGRAMS 0 0 0 0 0 0
339 182&186/MISC.OTHER REGULATORY ASSETS
340 CUB FUND GRANT(OPUC ORDER 24-006) 37,450 0 37,450 (37,450) 0 0 0
341 CUB FUND GRANT(OPUC ORDERS 23-185&24-153) 26,621 0 26,621 (26,621) 0 0 0
342 AM.FALLS BOND REFINANCING 10,426 0 10,426 (10,426) 0 0 0
343 SFAS 87 CAPITALIZED PENSION-OPUC ORDER 10-064 7,230,554 0 7,230,554 133,719 7,364,273 0 7,364,273
344 CLOUD COMPUTING-(IPUC Order 34707) 1,322,509 (439,262) 883,247 91,606 974,853 0 974,853
345 WILDFIRE MITIGATION(IPUC Order 36042) 22,867,052 0 22,867,052 (3,811,175) 19,055,877 0 19,055,877
346 WILDFIRE MITIGATION(IPUC ORDERS 35077,35717,36042) 40,349,931 0 40,349,931 22,519,724 62,869,655 0 62,869,655
347 WESTERN RESOURCE ADEQUACY PROGRAM(IPUC ORDER 35920) 635,221 0 635,221 386,558 1,021,778 0 1,021,778
348 INTERVENOR FUNDING(IPUC ORDER 36042) 51,057 0 51,057 (51,057) 0 0 0
349 INTERVENOR FUNDING AMORT(IPUC ORDER 36042) 230,037 0 230,037 (38,340) 191,697 0 191,697
350 SIEMENS LTP RATE BASE&DEFERRED RATE BASE(IPUC Order 33420) 19,313,358 0 19,313,358 (1,075,354) 18,238,004 0 18,238,004
351 SIEMENS LTP RATE BASE&DEFERRED RATE BASE(OPUC ORDER 15-387) 482,930 0 482,930 (83,363) 399,567 0 399,567
352 WILDFIRE MITIGATION(OPUC ORDER 24-010) 749,225 0 749,225 0 749,225 0 749,225
353 TOTAL OTHER REGULATORY ASSETS 93,306,371 (439,262) 92,867,109 17,997,820 110,864,929 0 110,864,929
354 186/MISC.OTHER DEFERRED PROGRAMS 0 0 0 0 0 0 0
355 254/JIM BRIDGER PLANT END OF LIFE DEPR-OPUC ORDER 12-296 (2,526,864) 0 (2,526,864) 0 (2,526,864) 0 (2,526,864)
356 OTHER 0 0 0 0 0 0
357 TOTAL DEFERRED PROGRAMS 90,779,507 (439,262) 90,340,245 17,997,820 108,338,065 0 108,338,065
358
359 DEVELOPMENT OF IERCO RATE BASE 0
360 INVESTMENT IN IERCO 23,501,862 0 23,501,862 2,027,644 25,529,506 0 25,529,506
361 PREPAID COAL ROYALTIES 398,686 0 398,686 (260,562) 138,124 0 138,124
362 NOTES PAYABLE TO/RECEIVABLE FROM SUBSIDIARY 12,685,613 0 12,685,613 2,795,569 15,481,182 0 15,481,182
363 TOTAL SUBSIDIARY RATE BASE 36,586,160 0 36,586,160 4,562,652 41,148,812 0 41,148,812
364 0
365 TOTAL COMBINED RATE BASE 4,635,208,609 (179,072,637) 4,456,135,972 705,103,402 5,161,239,374 210,213,537 5,371,452,912
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 8 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
366 TABLE 4-OPERATING REVENUES
367 FIRM ENERGY SALES&OATT REFUNDS
368 440-448/RETAIL 1,552,780,508 (137,231,603) 1,415,548,905 120,639,401 1,536,188,306 0 1,536,188,306
369 442/BASE REVENUE TRANSFER-PCA 0 0 0 46,781,308 46,781,308 0 46,781,308
370 442/BASE REVENUE TRANSFER-EE RIDER 0 0 0 0 0 0 0
371 447/SYSTEM OPPORTUNITY SALES 142,669,958 (107,983,608) 34,686,350 54,635,577 89,321,927 0 89,321,927
372 447.050/SURPLUS SALES-TRANSMISSION LOSSES 0 0 0 11,798,095 11,798,095 0 11,798,095
373 TOTAL SALES OF ELECTRICITY 1,695,450,466 (245,215,211) 1,450,235,255 233,854,381 1,684,089,636 0 1,684,089,636
374
375 OTHER OPERATING REVENUES
376 415/MERCHANDISING REVENUES 4,376,138 0 4,376,138 119,403 4,495,541 0 4,495,541
377
378 449/OATT TARIFF REFUND
379 NETWORK 0 0 0 0 0 0 0
380 POINT-TO-POINT 0 0 0 0 0 0 0
381 TOTAL ACCOUNT 449 0 0 0 0 0 0 0
382
383 451/MISCELLANEOUS SERVICE REVENUES 6,838,793 0 6,838,793 0 6,838,793 0 6,838,793
384 0
385 454/RENTS FROM ELECTRIC PROPERTY 0
386 SUBSTATION EQUIPMENT 3,195,122 0 3,195,122 0 3,195,122 0 3,195,122
387 TRANSFORMER RENTALS 17,330 0 17,330 0 17,330 0 17,330
388 LINE RENTALS 0 0 0 0 0 0 0
389 COGENERATION 1,975,074 0 1,975,074 4,824 1,979,898 0 1,979,898
390 DARK FIBER PROJECT 0 0 0 0 0 0 0
391 POLE ATTACHMENTS 1,800,552 0 1,800,552 0 1,800,552 0 1,800,552
392 FACILITIES CHARGES 11,032,793 0 11,032,793 545,415 11,578,208 0 11,578,208
393 OTHER RENTALS 1,355,385 0 1,355,385 0 1,355,385 0 1,355,385
394 WATER LEASE 96,110 0 96,110 (8,745) 87,365 0 87,365
395 TOTAL ACCOUNT 454 19,472,366 0 19,472,366 541,494 20,013,860 0 20,013,860
396
397 456/OTHER ELECTRIC REVENUES
398 TRANSMISSION NETWORK SERVICES-FIRM 10,771,228 0 10,771,228 275,765 11,046,993 0 11,046,993
399 TRANSMISSION NETWORK SERVICES-DIST FACILITIES 716,545 0 716,545 0 716,545 0 716,545
400 TRANSMISSION-POINT-TO-POINT&OTHER 55,863,562 0 55,863,562 (1,444,646) 54,418,916 0 54,418,916
401 PHOTOVOLTAIC STATION SERVICE 0 0 0 0 0 0 0
402 ENERGY EFFICIENCY RIDER 27,580,701 (27,580,701) 0 0 0 0 0
403 STANDBY SERVICE CHARGE 1,158,065 0 1,158,065 0 1,158,065 0 1,158,065
404 SIERRA PACIFIC USAGE CHARGE 735,705 0 735,705 (657,857) 77,848 0 77,848
405 ANTELOPE 0 0 0 0 0 0 0
406 MISCELLANEOUS 1,863 0 1,863 0 1,863 0 1,863
407 TOTAL ACCOUNT 456 96,827,670 (27,580,701) 69,246,968 (1,826,738) 67,420,230 0 67,420,230
408
409 TOTAL OTHER OPERATING REVENUES 127,514,967 (27,580,701) 99,934,265 (1,165,841) 98,768,424 0 98,768,424
410
411 TOTAL OPERATING REVENUES 1,822,965,433 (272,795,912) 1,550,169,520 232,688,540 1,782,858,060 0 1,782,858,060
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 9 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
412 TABLE&OPERATION&MAINTENANCE EXPENSES
413 STEAM POWER GENERATION
414 OPERATION
415 500/SUPERVISION&ENGINEERING 954,516 (283,105) 671,411 1,123 672,534 8,760 681,294
416 501/FUEL 97,426,834 (31,903,834) 65,523,000 60,278,910 125,801,910 0 125,801,910
417 502/STEAM EXPENSES
418 LABOR 2,042,152 0 2,042,152 0 2,042,152 0 2,042,152
419 OTHER 6,814,643 (4,095,143) 2,719,500 0 2,719,500 0 2,719,500
420 TOTAL ACCOUNT 502 8,856,796 (4,095,143) 4,761,653 0 4,761,653 0 4,761,653
421 505/ELECTRIC EXPENSES
422 LABOR 979,344 0 979,344 0 979,344 0 979,344
423 OTHER 773,205 0 773,205 0 773,205 0 773,205
424 TOTAL ACCOUNT 505 1,752,549 0 1,752,549 0 1,752,549 0 1,752,549
425 506/MISCELLANEOUS EXPENSES 8,027,360 (6,754,326) 1,273,034 28 1,273,062 217 1,273,279
426 507/RENTS 223,832 (223,832) 0 0 0 0 0
427 STEAM OPERATION EXPENSES 117,241,885 (43,260,240) 73,981,645 60,280,061 134,261,706 8,977 134,270,683
428
429 MAINTENANCE
430 510/SUPERVISION&ENGINEERING 52,861 (52,861) 0 0 0 0 0
431 511 /STRUCTURES 355,731 0 355,731 0 355,731 0 355,731
432 512/BOILER PLANT 0
433 LABOR 3,338,587 0 3,338,587 0 3,338,587 0 3,338,587
434 OTHER 5,182,896 (6,614,610) (1,431,714) 0 (1,431,714) 0 (1,431,714)
435 TOTAL ACCOUNT 512 8,521,483 (6,614,610) 1,906,873 0 1,906,873 0 1,906,873
436 513/ELECTRIC PLANT 0
437 LABOR 1,472,428 0 1,472,428 0 1,472,428 0 1,472,428
438 OTHER 1,680,148 (3,237,241) (1,557,093) 0 (1,557,093) 0 (1,557,093)
439 TOTAL ACCOUNT513 3,152,576 (3,237,241) (84,665) 0 (84,665) 0 (84,665)
440 514/MISCELLANEOUS STEAM PLANT 7,462,549 (7,305,745) 156,804 0 156,804 0 156,804
441 STEAM MAINTENANCE EXPENSES 19,545,200 (17,210,457) 2,334,743 0 2,334,743 0 2,334,743
442 TOTAL STEAM GENERATION EXPENSES 136,787,085 (60,470,697) 76,316,389 60,280,061 136,596,450 8,977 136,605,427
443
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 10 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
444 TABLE&OPERATION&MAINTENANCE EXPENSES
445 HYDRAULIC POWER GENERATION
446 OPERATION
447 535/SUPERVISION&ENGINEERING 6,209,394 0 6,209,394 27,440 6,236,834 214,121 6,450,955
448 536/WATER FOR POWER 0
449 WATER FOR POWER/WCLOUD SEEDING 2,910,129 (403) 2,909,726 1,129,569 4,039,295 30,302 4,069,597
450 WATER LEASE 0 0 0 0 0 0 0
451 TOTAL ACCOUNT 536 2,910,129 (403) 2,909,726 1,129,569 4,039,295 30,302 4,069,597
452 537/HYDRAULIC EXPENSES 21,238,903 0 21,238,903 42,976 21,281,879 335,350 21,617,229
453 538/ELECTRIC EXPENSES 0
454 LABOR 1,762,303 0 1,762,303 10,002 1,772,305 78,052 1,850,357
455 OTHER 553,965 0 553,965 0 553,965 0 553,965
456 TOTAL ACCOUNT 538 2,316,268 0 2,316,268 10,002 2,326,270 78,052 2,404,322
457 539/MISCELLANEOUS EXPENSES 6,579,401 0 6,579,401 25,871 6,605,272 201,880 6,807,152
458 540/RENTS 319,089 0 319,089 0 319,089 0 319,089
459 HYDRAULIC OPERATION EXPENSES 39,573,184 (403) 39,572,781 1,235,858 40,808,639 859,705 41,668,344
460
461 MAINTENANCE
462 541/SUPERVISION&ENGINEERING 179,739 0 179,739 851 180,590 6,640 187,230
463 542/STRUCTURES 1,151,714 0 1,151,714 3,883 1,155,597 30,301 1,185,898
464 543/RESERVOIRS,DAMS&WATERWAYS 1,721,351 0 1,721,351 2,367 1,723,718 18,474 1,742,192
465 544/ELECTRIC PLANT 0
466 LABOR 2,318,409 0 2,318,409 13,465 2,331,874 105,069 2,436,943
467 OTHER 1,468,210 0 1,468,210 0 1,468,210 0 1,468,210
468 TOTAL ACCOUNT 544 3,786,618 0 3,786,618 13,465 3,800,083 105,069 3,905,152
469 545/MISCELLANEOUS HYDRAULIC PLANT 5,139,109 (25) 5,139,084 17,339 5,156,423 135,299 5,291,722
470 HYDRAULIC MAINTENANCE EXPENSES 11,978,531 (25) 11,978,506 37,905 12,016,411 295,783 12,312,194
471 TOTAL HYDRAULIC GENERATION EXPENSES 51,551,715 (428) 51,551,287 1,273,763 52,825,050 1,155,488 53,980,538
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 11 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
472 TABLE&OPERATION&MAINTENANCE EXPENSES
473 OTHER POWER GENERATION
474 OPERATION
475 546/SUPERVISION&ENGINEERING 596,233 0 596,233 2,960 599,193 23,101 622,294
476 547/FUEL
477 DIESEL FUEL 11,926 0 11,926 0 11,926 0 11,926
478 OTHER 161,764,878 (42,111,203) 119,653,675 (41,718,620) 77,935,055 0 77,935,055
479 TOTAL ACCOUNT 547 161,776,803 (42,111,203) 119,665,601 (41,718,620) 77,946,980 0 77,946,980
480 548/GENERATING EXPENSES
481 LABOR 3,885,263 0 3,885,263 21,927 3,907,190 171,101 4,078,291
482 OTHER 2,362,117 0 2,362,117 0 2,362,117 0 2,362,117
483 TOTAL ACCOUNT 548 6,247,380 0 6,247,380 21,927 6,269,307 171,101 6,440,408
484 549/MISCELLANEOUS EXPENSES 729,077 0 729,077 2,771 731,848 21,620 753,468
485 550/RENTS 0 0 0 0 0 0 0
486 OTHER POWER OPER EXPENSES 169,349,494 (42,111,203) 127,238,291 (41,690,962) 85,547,328 215,822 85,763,150
487
488 MAINTENANCE
489 551/SUPERVISION&ENGINEERING 0 0 0 0 0 0 0
490 552/STRUCTURES 101,732 0 101,732 317 102,049 2,476 104,525
491 553/GENERATING&ELECTRIC PLANT 0 0 0
492 LABOR 63,357 0 63,357 346 63,703 2,696 66,399
493 OTHER 46,402 0 46,402 0 46,402 0 46,402
494 TOTAL ACCOUNT 553 109,760 0 109,760 346 110,106 2,696 112,802
495 554/MISCELLANEOUS EXPENSES 3,223,775 0 3,223,775 2,806 3,226,581 21,897 3,248,478
496 OTHER POWER MAINT EXPENSES 3,435,266 0 3,435,266 3,469 3,438,735 27,069 3,465,804
497 TOTAL OTHER POWER GENERATION EXP 172,784,759 (42,111,203) 130,673,556 (41,687,493) 88,986,063 242,891 89,228,954
498
499 OTHER POWER SUPPLY EXPENSE
500 555.0/PURCHASED POWER
501 POWER EXPENSE 185,438,626 (85,973,605) 99,465,021 61,942,764 161,407,785 0 161,407,785
502 OTHER 0 0 0 0 0 0 0
503 TRANSMISSION LOSSES 592,579 (592,579) 0 0 0 0 0
504 IDAHO DEMAND RESPONSE INCENTIVE 8,952,862 1,287,141 10,240,003 (897,245) 9,342,758 0 9,342,758
505 TOTAL 555.0/PURCHASED POWER 194,984,067 (85,279,043) 109,705,024 61,045,520 170,750,544 0 170,750,544
506 555.1/COGENERATION&SMALL POWER PROD 216,985,378 (2,536,623) 214,448,755 12,270,689 226,719,444 0 226,719,444
507 555/TOTAL 411,969,444 (87,815,665) 324,153,779 73,316,209 397,469,988 0 397,469,988
508 556/LOAD CONTROL&DISPATCHING EXPENSES 84 0 84 0 84 3 87
509 557/OTHER EXPENSES
510 IDAHO POWER COST-RELATED EXPENSES 87,728,728 (87,728,728) 0 0 0 0 0
511 OREGON POWER COST-RELATED EXPENSES 2,027,980 (2,027,980) 0 0 0 0 0
512 OTHER 7,430,223 (4) 7,430,219 32,272 7,462,491 251,828 7,714,319
513 BRIDGER GAAP ADJ (14,383,038) 14,383,038 0 0 0 0 0
514 557/TOTAL 82,803,893 (75,373,673) 7,430,219 32,272 7,462,491 251,828 7,714,319
515 TOTAL OTHER POWER SUPPLY EXPENSES 494,773,421 (163,189,339) 331,584,083 73,348,481 404,932,564 251,831 405,184,395
516 0 0 0
517 TOTAL PRODUCTION EXPENSES 855,896,981 (265,771,666) 590,125,315 93,214,812 683,340,126 1,659,187 684,999,313
518 TABLE 5-OPERATION&MAINTENANCE EXPENSES
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 12 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
519 TRANSMISSION EXPENSES
520 OPERATION
521 560/SUPERVISION&ENGINEERING 2,806,087 (4,302) 2,801,785 11,568 2,813,353 90,270 2,903,623
522 561/LOAD DISPATCHING 5,097,850 0 5,097,850 17,600 5,115,450 137,336 5,252,786
523 562/STATION EXPENSES 2,589,638 (4) 2,589,634 10,494 2,600,128 81,889 2,682,017
524 563/OVERHEAD LINE EXPENSES 1,249,690 0 1,249,690 2,854 1,252,544 22,271 1,274,815
525 565/TRANSMISSION OF ELECTRICITY BYOTHERS 13,112,150 (2,849,011) 10,263,139 2,698,784 12,961,923 0 12,961,923
526 566/MISCELLANEOUS EXPENSES 0 0 0 0 0 0 0
527 567/RENTS 4,528,250 0 4,528,250 0 4,528,250 0 4,528,250
528 TOTAL TRANSMISSION OPERATION 29,383,665 (2,853,317) 26,530,348 2,741,300 29,271,648 331,766 29,603,414
529
530 MAINTENANCE
531 568/SUPERVISION&ENGINEERING 470,610 0 470,610 1,308 471,918 10,210 482,128
532 569/STRUCTURES 1,703,732 0 1,703,732 6,971 1,710,703 54,400 1,765,103
533 570/STATION EQUIPMENT 3,192,925 (4) 3,192,921 13,762 3,206,683 107,391 3,314,074
534 571/OVERHEAD LINES 4,186,984 3,047,080 7,234,064 1,762,385 8,996,449 56,380 9,052,829
535 573/MISCELLANEOUS PLANT 760 0 760 3 763 27 790
536 TOTAL TRANSMISSION MAINTENANCE 9,555,011 3,047,076 12,602,087 1,784,429 14,386,516 228,408 14,614,924
537
538 TOTAL TRANSMISSION EXPENSES 38,938,676 193,759 39,132,435 4,525,729 43,658,164 560,174 44,218,338
539
540 REGIONAL MARKET EXPENSES
541 OPERATION
542 575/OPER TRANS MKT ADMIN-EIM 552,732 0 552,732 0 552,732 0 552,732
543
544 TOTAL REGIONAL MARKET EXPENSES 552,732 0 552,732 0 552,732 0 552,732
545
546 ENERGY STORAGE EXPENSES
547 OPERATION
548 577/ENERGY STORAGE OPERATION 0 0 0 21,546,000 21,546,000 0 21,546,000
549 TOTAL ENERGY STORAGE OPERATION EXPENSES 0 0 0 21,546,000 21,546,000 0 21,546,000
550 MAINTENANCE
551 578/ENERGY STORAGE MAINTENANCE 0 0 0 1,870,920 1,870,920 0 1,870,920
552 TOTAL ENERGY STORAGE MAINTENANCE EXPENSES 0 0 0 1,870,920 1,870,920 0 1,870,920
553
554 TOTAL ENERGY STORAGE EXPENSES 0 0 0 23,416,920 23,416,920 0 23,416,920
555
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 13 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
556 TABLE&OPERATION&MAINTENANCE EXPENSES
557 DISTRIBUTION EXPENSES
558 OPERATION
559 580/SUPERVISION&ENGINEERING 4,981,783 (6,365) 4,975,418 19,103 4,994,521 149,066 5,143,587
560 581/LOAD DISPATCHING 5,988,645 0 5,988,645 29,657 6,018,302 231,424 6,249,726
561 582/STATION EXPENSES 1,953,587 (4) 1,953,583 6,025 1,959,608 47,019 2,006,627
562 583/OVERHEAD LINE EXPENSES 6,679,549 19,268 6,698,817 41,955 6,740,772 194,110 6,934,882
563 584/UNDERGROUND LINE EXPENSES 6,009,462 (4,307) 6,005,155 8,983 6,014,138 70,099 6,084,237
564 585/STREET LIGHTING&SIGNAL SYSTEMS 190 0 190 1 191 6 197
565 586/METER EXPENSES 6,857,272 0 6,857,272 28,496 6,885,768 222,360 7,108,128
566 587/CUSTOMER INSTALLATIONS EXPENSE 1,261,551 0 1,261,551 5,293 1,266,844 41,306 1,308,150
567 588/MISCELLANEOUS EXPENSES 4,391,126 (10,522) 4,380,604 15,983 4,396,587 124,718 4,521,305
568 589/RENTS 403,629 0 403,629 0 403,629 0 403,629
569 TOTAL DISTRIBUTION OPERATION 38,526,794 (1,930) 38,524,864 155,496 38,680,360 1,080,108 39,760,468
570
571 MAINTENANCE
572 590/SUPERVISION&ENGINEERING 9,118 0 9,118 32 9,150 253 9,403
573 591/STRUCTURES 0 0 0 0 0 0 0
574 592/STATION EQUIPMENT 5,336,750 (4) 5,336,746 18,358 5,355,104 143,249 5,498,353
575 593/OVERHEAD LINES 35,534,246 7,150,702 42,684,948 9,805,824 52,490,772 278,998 52,769,770
576 594/UNDERGROUND LINES 987,659 (7,890) 979,769 2,480 982,249 19,355 1,001,604
577 595/LINE TRANSFORMERS 59,807 0 59,807 130 59,937 1,016 60,953
578 596/STREET LIGHTING&SIGNAL SYSTEMS 202,841 0 202,841 483 203,324 3,763 207,087
579 5971 METERS 1,017,258 0 1,017,258 4,560 1,021,818 35,582 1,057,400
580 598/MISCELLANEOUS PLANT 220,009 0 220,009 704 220,713 5,497 226,210
581 TOTAL DISTRIBUTION MAINTENANCE 43,367,688 7,142,808 50,510,496 9,832,571 60,343,067 487,713 60,830,780
582 TOTAL DISTRIBUTION EXPENSES 81,894,482 7,140,878 89,035,360 9,988,067 99,023,427 1,567,821 100,591,248
583
584 CUSTOMER ACCOUNTING EXPENSES
585 901/SUPERVISION 917,633 (507) 917,126 4,454 921,580 34,753 956,333
586 902/METER READING 2,086,175 0 2,086,175 7,428 2,093,603 57,963 2,151,566
587 903/CUSTOMER RECORDS&COLLECTIONS 17,311,614 (26) 17,311,588 60,166 17,371,754 469,494 17,841,248
588 904/UNCOLLECTIBLE ACCOUNTS 4,630,705 0 4,630,705 0 4,630,705 0 4,630,705
589 905/MISC EXPENSES 11 0 11 0 11 0 11
590 TOTAL CUSTOMER ACCOUNTING EXPENSES 24,946,138 (533) 24,945,605 72,048 25,017,653 562,210 25,579,863
591
592 CUSTOMER SERVICES&INFORMATION EXPENSES
593 907/SUPERVISION 1,166,372 0 1,166,372 5,532 1,171,904 43,166 1,215,070
594 908/CUSTOMER ASSISTANCE 0
595 ENERGY EFFICIENCY PROGRAMS 229,085 0 229,085 0 229,085 0 229,085
596 OTHER 37,326,547 (27,581,186) 9,745,362 46,684 9,792,046 364,291 10,156,337
597 TOTAL ACCOUNT908 37,555,632 (27,581,186) 9,974,447 46,684 10,021,131 364,291 10,385,422
598 909/INFORMATION&INSTRUCTIONAL 342,954 0 342,954 0 342,954 0 342,954
599 910/MISCELLANEOUS EXPENSES 733,643 0 733,643 2,148 735,791 16,759 752,550
600 912/DEMO AND SELLING EXPENSES 0 0 0 0 0 0 0
601 TOTAL CUST SERV&INFORMATN EXPENSES 39,798,601 (27,581,186) 12,217,416 54,364 12,271,780 424,216 12,695,996
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 14 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
602 TABLE&OPERATION&MAINTENANCE EXPENSES
603 ADMINISTRATIVE&GENERAL EXPENSES
604 920/ADMINISTRATIVE&GENERAL SALARIES 110,254,504 (30,168,168) 80,086,336 12,347,488 92,433,824 3,107,044 95,540,868
605 921/OFFICE SUPPLIES 19,328,502 (29,176) 19,299,326 (686,437) 18,612,890 18,757 18,631,647
606 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR (47,555,951) 0 (47,555,951) (235,937) (47,791,888) (1,841,082) (49,632,970)
607 923/OUTSIDE SERVICES 10,696,562 5,105 10,701,666 0 10,701,666 0 10,701,666
608 924/PROPERTY INSURANCE
609 PRODUCTION-STEAM 491,124 0 491,124 0 491,124 13,474 504,598
610 ALL RISK&MISCELLANEOUS 4,556,587 1,228,229 5,784,816 1,588,579 7,373,395 119,339 7,492,734
611 TOTAL ACCOUNT 924 5,047,711 1,228,229 6,275,940 1,588,579 7,864,519 132,813 7,997,332
612 925/INJURIES&DAMAGES 10,612,690 4,198,655 14,811,345 4,012,722 18,824,067 10,998 18,835,065
613 926/EMPLOYEE PENSIONS&BENEFITS 48,372,013 (321) 48,371,692 237,835 48,609,527 1,855,892 50,465,419
614 EMPLOYEE PENSIONS&BENEFITS-OREGON 542,861 0 542,861 0 542,861 0 542,861
615 EMPLOYEE PENSIONS&BENEFITS-IDAHO 35,182,378 0 35,182,378 0 35,182,378 0 35,182,378
616 EMPLOYEE PENSIONS AND BENEFITS-FERC 0 0 0 0 0 0 0
617 927/FRANCHISE REQUIREMENTS 0 0 0 0 0 0 0
618 928/REGULATORY COMMISSION EXPENSES
619 928.101/FERC ADMIN ASSESS&SECURITIES
620 CAPACITY RELATED 3,191,111 0 3,191,111 0 3,191,111 0 3,191,111
621 ENERGY RELATED 1,299,039 0 1,299,039 0 1,299,039 0 1,299,039
622 FERC RATE CASE 0 0 0 0 0 0 0
623 FERC ORDER472 1,078,140 0 1,078,140 0 1,078,140 0 1,078,140
624 FERC OTHER 256,196 0 256,196 0 256,196 0 256,196
625 FERC-OREGON HYDRO FEE 445,502 0 445,502 0 445,502 0 445,502
626 REGULATORY COMMISSION EXPENSE-SYSTEM OTHER 47,125 (7,520) 39,605 0 39,605 0 39,605
627 IDAHO PUC -RATE CASE 0 0 0 0 0 0 0
628 -OTHER 89,772 3,900 93,672 53,887 147,559 0 147,559
629 OREGON PUC-RATE CASE 0 0 0 0 0 0 0
630 -OTHER 546,675 (320,045) 226,630 0 226,630 0 226,630
631 TOTAL ACCOUNT 928 6,953,560 (323,665) 6,629,895 53,887 6,683,782 0 6,683,782
632 929/DUPLICATE CHARGES 0 0 0 0 0 0 0
633 930.1/GENERAL ADVERTISING 133,442 (133,442) 0 0 0 0 0
634 930.2/MISCELLANEOUS EXPENSES 4,681,625 (460,172) 4,221,453 798 4,222,251 6,231 4,228,482
635 931/RENTS 0 0 0 0 0 0 0
636 TOTAL ADM&GEN OPERATION 204,249,895 (25,682,955) 178,566,940 17,318,935 195,885,875 3,290,653 199,176,528
637 PLUS: 0 0 0
638 935/GENERAL PLANT MAINTENANCE 7,588,454 (7,342) 7,581,112 7,645 7,588,757 59,658 7,648,415
639 416/MERCHANDISING EXPENSE 5,418,390 0 5,418,390 128,655 5,547,045 0 5,547,045
640 TOTAL OPER&MAINT EXPENSES 1,259,284,350 (311,709,045) 947,575,305 148,727,175 1,096,302,480 8,123,919 1,104,426,399
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 15 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
641 TABLE&DEPRECIATION&AMORTIZATION EXPENSE
642
643 DEPRECIATION EXPENSE
644 310-316/STEAM PRODUCTION 59,841,521 (49,021,948) 10,819,573 685,671 11,505,244 166,072 11,671,316
645 330-336/HYDRAULIC PRODUCTION 27,052,571 0 27,052,571 978,123 28,030,694 604,729 28,635,423
646 340-346/OTHER PRODUCTION-BASELOAD 12,364,566 0 12,364,566 (147,239) 12,217,327 54,961 12,272,287
647 340-346/OTHER PRODUCTION-PEAKERS 8,056,582 0 8,056,582 (95,939) 7,960,643 35,812 7,996,454
648 TOTAL PRODUCTION PLANT 107,315,240 (49,021,948) 58,293,291 1,420,616 59,713,908 861,573 60,575,481
649
650 TRANSMISSION PLANT
651 350/LAND&LAND RIGHTS 460,911 0 460,911 21,868 482,779 20,827 503,605
652352/STRUCTURES&IMPROVEMENTS 2,163,087 (18,010) 2,145,077 330,117 2,475,194 17,520 2,492,714
653 353/STATION EQUIPMENT 11,491,883 (574,992) 10,916,891 703,907 11,620,798 192,754 11,813,553
654 354/TOWERS&FIXTURES 2,843,216 0 2,843,216 333,999 3,177,215 82,066 3,259,280
655 355/POLES&FIXTURES 6,482,633 0 6,482,633 537,470 7,020,104 323,367 7,343,470
656 356/OVERHEAD CONDUCTORS&DEVICES 4,088,785 0 4,088,785 621,050 4,709,834 144,513 4,854,348
657 359/ROADS&TRAILS 2,795 0 2,795 19 2,814 31 2,845
658 TOTAL TRANSMISSION PLANT 27,533,309 (593,001) 26,940,308 2,548,431 29,488,738 781,077 30,269,816
659
660 DISTRIBUTION PLANT
661 360/LAND&LAND RIGHTS 29,090 0 29,090 (0) 29,090 0 29,090
662 361/STRUCTURES&IMPROVEMENTS 1,441,757 0 1,441,757 103,644 1,545,401 68,887 1,614,289
663 362/STATION EQUIPMENT 6,684,586 0 6,684,586 522,165 7,206,751 224,789 7,431,539
664 363/STORAGE BATTERY EQUIPMENT 0 0 0 0 0 0 0
665 364/POLES,TOWERS&FIXTURES 6,985,900 0 6,985,900 458,021 7,443,921 260,152 7,704,073
666 365/OVERHEAD CONDUCTORS&DEVICES 3,763,906 0 3,763,906 225,481 3,989,387 106,947 4,096,334
667 366/UNDERGROUND CONDUIT 1,364,373 0 1,364,373 84,103 1,448,476 89,461 1,537,936
668 367/UNDERGROUND CONDUCTORS&DEVICES 8,038,734 0 8,038,734 503,295 8,542,030 548,239 9,090,268
669 368/LINE TRANSFORMERS 15,331,950 0 15,331,950 1,015,534 16,347,484 442,024 16,789,509
670 369/SERVICES 1,219,271 0 1,219,271 31,416 1,250,687 12,737 1,263,425
671 370/METERS 6,059,766 0 6,059,766 388,943 6,448,710 158,929 6,607,639
672 371/INSTALLATIONS ON CUSTOMER PREMISES 235,876 0 235,876 (2,864) 233,012 60 233,072
673 373/STREET LIGHTING SYSTEMS 230,926 0 230,926 (569) 230,357 (31) 230,327
674 TOTAL DISTRIBUTION PLANT 51,386,136 0 51,386,136 3,329,170 54,715,306 1,912,194 56,627,499
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 16 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
675 TABLE&DEPRECIATION&AMORTIZATION EXPENSE
676
677 ENERGY STORAGE PLANT
678 387/ENERGY STORAGE PLANT 9,634,620 0 9,634,620 13,096,848 22,731,469 2,964,664 25,696,132
679 TOTAL ENERGY STORAGE PLANT EXPENSE 9,634,620 0 9,634,620 13,096,848 22,731,469 2,964,664 25,696,132
680
681 GENERAL PLANT
682 389/LAND&LAND RIGHTS 0 0 0 0 0 0 0
683 390/STRUCTURES&IMPROVEMENTS 3,674,197 0 3,674,197 362,393 4,036,590 179,113 4,215,703
684 391/OFFICE FURNITURE&EQUIPMENT 7,012,429 0 7,012,429 71,942 7,084,370 63,999 7,148,369
685 392/TRANSPORTATION EQUIPMENT 72,444 0 72,444 (0) 72,444 0 72,444
686 393/STORES EQUIPMENT 326,528 0 326,528 88,673 415,200 18,376 433,576
687 394/TOOLS,SHOP&GARAGE EQUIPMENT 833,134 0 833,134 43,088 876,221 14,353 890,574
688 395/LABORATORY EQUIPMENT 857,841 0 857,841 19,123 876,964 11,441 888,405
689 396/POWER OPERATED EQUIPMENT 0 0 0 0 0 0 0
690 397/COMMUNICATIONS EQUIPMENT 5,548,230 0 5,548,230 177,055 5,725,285 133,831 5,859,117
691 398/MISCELLANEOUS EQUIPMENT 809,147 0 809,147 24,685 833,832 29,668 863,500
692 TOTAL GENERAL PLANT 19,133,948 0 19,133,948 786,958 19,920,907 450,781 20,371,688
693
694 TOTAL DEPRECIATION EXPENSE 215,003,253 (49,614,950) 165,388,303 21,182,024 186,570,327 6,970,289 193,540,616
695
696 DEPRECIATION ON DISALLOWED COSTS (296,299) 0 (296,299) 0 (296,299) 0 (296,299)
697 TOTAL DEPRECIATION EXPENSE 214,706,954 (49,614,950) 165,092,004 21,182,024 186,274,028 6,970,289 193,244,317
698
699 AMORTIZATION EXPENSE
700 302/FRANCHISES AND CONSENTS 1,508,015 0 1,508,015 186,203 1,694,219 55,046 1,749,265
701 303/MISCELLANEOUS INTANGIBLE PLANT 6,093,757 0 6,093,757 1,900,364 7,994,121 274,152 8,268,272
702 ADJUSTMENTS,GAINS&LOSSES 15,018 0 15,018 0 15,018 0 15,018
703 TOTAL AMORTIZATION EXPENSE 7,616,790 0 7,616,790 2,086,567 9,703,357 329,198 10,032,555
704
705 TOTAL DEPRECIATION&AMORTIZATION EXP 222,323,744 (49,614,950) 172,708,794 23,268,591 195,977,385 7,299,487 203,276,872
706
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 17 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
707 TABLE 7-TAXES OTHER THAN INCOME TAXES
708
709 TAXES OTHER THAN INCOME
710 FEDERAL TAXES
711 FICA 21,673,544 0 21,673,544 0 21,673,544 0 21,673,544
712 FUTA 95,933 0 95,933 0 95,933 0 95,933
713 LESS PAYROLL DEDUCTION (22,219,620) 0 (22,219,620) 0 (22,219,620) 0 (22,219,620)
714
715 STATE TAXES
716 AD VALOREM TAXES
717 JIM BRIDGER 1,184,615 0 1,184,615 0 1,184,615 0 1,184,615
718 VALMY 268,798 0 268,798 108,161 376,959 35,518 412,477
719 OTHER-PRODUCTION PLANT 2,276,925 2,901,884 5,178,809 (3,662,925) 1,515,883 4,384 1,520,267
720 OTHER-TRANSMISSION PLANT 2,385,554 3,040,330 5,425,885 (3,304,560) 2,121,325 61,878 2,183,203
721 OTHER-DISTRIBUTION PLANT 3,049,390 3,886,372 6,935,762 (5,228,820) 1,706,942 67,859 1,774,801
722 OTHER-GENERAL PLANT 470,759 599,971 1,070,731 (1,032,371) 38,360 0 38,360
723 SUB-TOTAL 9,636,041 10,428,558 20,064,599 (13,120,516) 6,944,083 169,640 7,113,723
724
725 IDAHO OTHER ASSESSMENTS 173,830 0 173,830 29,415 203,245 0 203,245
726
727 LICENSES-HYDRO PROJECTS 3,885 0 3,885 0 3,885 0 3,885
728
729 REGULATORY COMMISSION FEES
730 STATE OF IDAHO 3,248,611 0 3,248,611 167,863 3,416,474 0 3,416,474
731 STATE OF OREGON 396,875 5,869 402,744 0 402,744 0 402,744
732
733 FRANCHISE TAXES
734 STATE OF OREGON 967,856 0 967,856 - 967,856 0 967,856
735
736 OTHER STATE TAXES
737 UNEMPLOYMENT TAXES 450,143 0 450,143 0 450,143 0 450,143
738 KILOWATT-HOUR TAX-IDAHO 1,724,862 0 1,724,862 285,628 2,010,490 0 2,010,490
739 NEVADA STATE COMMERCE TAX 3,778 0 3,778 0 3,778 0 3,778
740
741 TOTAL TAXES OTHER THAN INCOME 16,155,738 10,434,427 26,590,165 (12,637,609) 13,952,556 169,640 14,122,195
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 18 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
742 TABLE 8-REGULATORY DEBITS&CREDITS
743 REGULATORY DEBITS/CREDITS
744 STATE OF IDAHO 5,062,314 191,050 5,253,364 10,402,322 15,655,686 0 15,655,686
745 STATE OF OREGON 327,353 0 327,353 0 327,353 0 327,353
746
747 TOTAL REGULATORY DEBITS/CREDITS 5,389,667 191,050 5,580,717 10,402,322 15,983,039 0 15,983,039
748
749
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 19 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
750 TABLE 9-INCOME TAXES
751
752 410/411 NET PROVISION FOR DEFERRED INCOME TAXES
753 ACCOUNT#282-RELATED (34,575,678) 0 (34,575,678) 13,530,401 (21,045,277) 0 (21,045,277)
754 ACCOUNT#190&#283-RELATED (39,720,889) 0 (39,720,889) 46,349,606 6,628,717 0 6,628,717
755 TOTAL NET PROVISION FOR DEFERRED INCOME TAXES (74,296,567) 0 (74,296,567) 59,880,007 (14,416,560) 0 (14,416,560)
756
757 411.4-INVESTMENT TAX CREDIT ADJUSTMENT 94,674,793 0 94,674,793 (43,784,522) 50,890,271 0 50,890,271
758
759 SUMMARY OF INCOME TAXES
760
761 TOTAL FEDERAL INCOME TAX 4,689,346 (621,880) 4,067,467 30,125,578 34,193,045 (3,107,538) 31,085,507
762
763 STATE INCOME TAX
764 STATE OFIDAHO 4,246,139 (146,662) 4,099,476 (10,227,156) (6,127,680) (732,873) (6,860,553)
765 STATE OF OREGON 1,616,619 (9,361) 1,607,258 (618,055) 989,203 (46,779) 942,424
766 OTHER STATES 186,820 (3,120) 183,700 158,019 341,719 (15,593) 326,126
767 TOTAL STATE INCOME TAXES 6,049,578 (159,144) 5,890,434 (10,687,192) (4,796,758) (795,245) (5,592,003)
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 20 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
768 TABLE 10-CALCULATION OF FEDERAL INCOME TAX 0
769 OPERATING REVENUES 1,822,965,433 (272,795,912) 1,550,169,520 232,688,540 1,782,858,060 0 1,782,858,060
770 0 0
771 OPERATING EXPENSES 0 0
772 OPERATION&MAINTENANCE 1,259,284,350 (311,709,045) 947,575,305 148,727,175 1,096,302,480 8,123,919 1,104,426,399
773 DEPRECIATION EXPENSE 214,706,954 (49,614,950) 165,092,004 21,182,024 186,274,028 6,970,289 193,244,317
774 AMORTIZATION OF LIMITED TERM PLANT 7,616,790 0 7,616,790 2,086,567 9,703,357 329,198 10,032,555
775 TAXES OTHER THAN INCOME 16,155,738 10,434,427 26,590,165 (12,637,609) 13,952,556 169,640 14,122,195
776 REGULATORY DEBITS/CREDITS 5,389,667 191,050 5,580,717 10,402,322 15,983,039 0 15,983,039
777 TOTAL OPERATING EXPENSES 1,503,153,499 (350,698,518) 1,152,454,981 169,760,479 1,322,215,460 15,593,046 1,337,808,505
778 0
779 BOOK-TAX ADJUSTMENT 0 0 0 0 0 0 0
780 0
781 INCOME BEFORE TAX ADJUSTMENTS 319,811,934 77,902,606 397,714,540 62,928,061 460,642,601 (15,593,046) 445,049,555
782
783 INCOME STATEMENT ADJUSTMENTS
784 INTEREST EXPENSE/SYNCHRONIZATION 163,301,266 0 163,301,266 3,782,076 167,083,342 0 167,083,342
785
786 NET OPERATING INCOME BEFORE TAXES 156,510,668 77,902,606 234,413,274 59,145,985 293,559,259 (15,593,046) 277,966,213
787
788 TOTAL STATE INCOME TAXES(ALLOWED) 7,627,565 (159,144) 7,468,421 (12,265,179) (4,796,758) (795,245) (5,592,003)
789
790 NET FEDERAL INCOME AFTER STATE INCOME TAXES 148,883,103 78,061,750 226,944,853 71,411,164 298,356,017 (14,797,800) 283,558,217
791
792 FEDERAL TAX AT 21 PERCENT 31,265,452 16,392,968 47,658,419 14,996,344 62,654,764 (3,107,538) 59,547,226
793 OTHER CURRENT TAX ADJUSTMENTS (80,366,183) 0 (80,366,183) 80,366,183 0 0 0
794 PRIOR YEAR TAX ADJUSTMENT (7,314,897) 0 (7,314,897) 7,314,897 0 0 0
795
796 TOTAL FEDERAL INCOME TAX BEFORE OTHER ADJUSTMENTS (56,415,628) 16,392,968 (40,022,661) 102,677,424 62,654,764 (3,107,538) 59,547,226
797
798 OTHER TAX ADJUSTMENTS
799 ALLOWANCE FOR AFUDC 81,023,082 (81,023,082) 0 0 0 0 0
800 FEDERAL INCOME TAX ADJUSTMENTS-PLANT 82,338,173 0 82,338,173 (30,049,950) 52,288,223 0 52,288,223
801 FEDERAL INCOME TAX ADJUSTMENTS-OTHER 127,614,815 0 127,614,815 (146,863,604) (19,248,789) 0 (19,248,789)
802 SUM OF OTHER ADJUSTMENTS 290,976,070 (81,023,082) 209,952,988 (176,913,554) 33,039,434 0 33,039,434
803 FEDERAL TAX ON OTHER TAX ADJ AT 21 PERCENT 61,104,975 (17,014,847) 44,090,127 (37,151,846) 6,938,281 0 6,938,281
804 FEDERAL GENERAL BUSINESS CREDITS 0 0 0 35,400,000 35,400,000 0 35,400,000
805
806 TOTAL FEDERAL INCOME TAX 4,689,346 (621,880) 4,067,467 30,125,578 34,193,045 (3,107,538) 31,085,507
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 21 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
807 TABLE 11-OREGON STATE INCOME TAX
808
809 NET OPERATING INCOME BEFORE TAXES-OREGON 156,510,668 77,902,606 234,413,274 59,145,985 293,559,259 (15,593,046) 277,966,213
810
811 ALLOWANCE FOR AFUDC 81,023,082 (81,023,082) 0 0 0 0 0
812 STATE INCOME TAX ADJUSTMENTS-PLANT 82,338,173 0 82,338,173 (30,049,950) 52,288,223 0 52,288,223
813 STATE INCOME TAX ADJUSTMENTS-OTHER 127,614,815 0 127,614,815 (146,863,604) (19,248,789) 0 (19,248,789)
814 ADD: OTHER DEDUCTION 0 0 0 0 0 0 0
815
816 TOTAL STATE INCOME TAX ADJUSTMENTS-OREGON 290,976,070 (81,023,082) 209,952,988 (176,913,554) 33,039,434 0 33,039,434
817
818 INCOME SUBJECT TO OREGON TAX 447,486,738 (3,120,476) 444,366,261 (117,767,568) 326,598,693 (15,593,046)
819
820 IERCO TAXABLE INCOME 20,482,426 0 20,482,426 (5,362,174) 15,120,252 0 15,120,252
821 BONUS DEPRECIATION&OTHER OREGON ADJ 29,843,708 0 29,843,708 (41,828,358) (11,984,650) 0 (11,984,650)
822 OTHER (38,644,854) 0 (38,644,854) 38,644,854 0 0 0
823
824 TOTAL STATE TAXABLE INCOME-OREGON 459,168,018 (3,120,476) 456,047,542 (126,313,247) 329,734,295 (15,593,046) 314,141,249
825 APPORTIONMENT FACTOR(0.045454550) 20,871,276 (141,840) 20,729,436 (5,741,512) 14,987,924 (708,775) 14,279,149
826 POST APPORTIONMENT M ITEMS 0 0 0 0 0 0 0
827 TOTAL TAXABLE INCOME-OREGON 20,871,276 (141,840) 20,729,436 (5,741,512) 14,987,924 (708,775) 14,279,149
828
829 OREGON TAX AT6.6 PERCENT 1,377,504 (9,361) 1,368,143 (378,940) 989,203 (46,779) 942,424
830 LESS:INVESTMENT TAX CREDIT 0 0 0 0 0 0 0
831
832 STATE INCOME TAX ALLOWED-OREGON 1,377,504 (9,361) 1,368,143 (378,940) 989,203 (46,779) 942,424
833 ADD: OR CAT TAX 391,114 0 391,114 (391,114) 0 0 0
834 PRIOR YEARS'TAX ADJUSTMENT (151,999) 0 (151,999) 151,999 0 0 0
835
836 STATE INCOME TAX PAID-OREGON 1,616,619 (9,361) 1,607,258 (618,055) 989,203 (46,779) 942,424
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 22 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
837 TABLE 12-IDAHO STATE INCOME TAX
838 0
839 NET OPERATING INCOME BEFORE TAXES-IDAHO 156,510,668 77,902,606 234,413,274 59,145,985 293,559,259 (15,593,046) 277,966,213
840
841 ALLOWANCE FOR AFUDC 81,023,082 (81,023,082) 0 0 0 0 0
842 STATE INCOME TAX ADJUSTMENTS-PLANT 82,338,173 0 82,338,173 (30,049,950) 52,288,223 0 52,288,223
843 STATE INCOME TAX ADJUSTMENTS-OTHER 127,614,815 0 127,614,815 (146,863,604) (19,248,789) 0 (19,248,789)
844 0
845 INCOME SUBJECT TO IDAHO TAX 447,486,738 (3,120,476) 444,366,261 (117,767,568) 326,598,693 (15,593,046) 311,005,647
846 0
847 IERCO TAXABLE INCOME 20,482,426 0 20,482,426 (5,362,174) 15,120,252 0 15,120,252
848 BONUS DEPRECIATION ADJUSTMENT 6,561,156 0 6,561,156 (38,464,777) (31,903,621) 0 (31,903,621)
849 OTHER (38,644,854) 0 (38,644,854) 38,644,854 0 0 0
850 TOTAL STATE TAXABLE INCOME-IDAHO 435,885,466 (3,120,476) 432,764,990 (122,949,666) 309,815,324 (15,593,046) 294,222,278
851 APPORTIONMENT FACTOR(0.88679245) 386,539,940 (2,767,215) 383,772,726 (109,030,835) 274,741,890 (13,827,795) 260,914,095
852 POST APPORTIONMENT SCHEDULE M 0 0 0 0 0 0 0
853 TOTAL TAXABLE INCOME-IDAHO 386,539,940 (2,767,215) 383,772,726 (109,030,835) 274,741,890 (13,827,795) 260,914,095
854 IDAHO TAX AT 5.3 PERCENT 20,486,617 (146,662) 20,339,954 (5,778,634) 14,561,320 (732,873) 13,828,447
855 LESS:INVESTMENT TAX CREDIT 14,704,525 0 14,704,525 5,984,475 20,689,000 0 20,689,000
856
857 STATE INCOME TAX ALLOWED-IDAHO 5,782,092 (146,662) 5,635,429 (11,763,109) (6,127,680) (732,873) (6,860,553)
858 ADD: CURRENT TAX ADJUSTMENT (2,848,695) 0 (2,848,695) 2,848,695 0 0 0
859 PRIOR YEARS'TAX ADJUSTMENT 1,312,742 0 1,312,742 (1,312,742) 0 0 0
860 STATE INCOME TAX PAID-IDAHO 4,246,139 (146,662) 4,099,476 (10,227,156) (6,127,680) (732,873) (6,860,553)
861
862 OTHER STATE INCOME TAX
863 INCOME SUBJECT TO TAX 447,486,738 (3,120,476) 444,366,261 (117,767,568) 326,598,693 (15,593,046) 311,005,647
864
865 IERCO TAXABLE INCOME 20,482,426 0 20,482,426 (5,362,174) 15,120,252 0 15,120,252
866 BONUS DEPRECIATION ADJUSTMENT 0 0 0 0 0 0 0
867 OTHER 0 0 0 0 0 0 0
868 TOTAL TAXABLE INCOME-OTHER STATES 467,969,164 (3,120,476) 464,848,687 (123,129,742) 341,718,945 (15,593,046) 326,125,899
869 APPORTIONMENT FACTOR(1.0) 467,969,164 (3,120,476) 464,848,687 (123,129,742) 341,718,945 (15,593,046) 326,125,899
870 POST APPORTIONMENT M 0 0 0 0 0 0 0
871 TAXABLE INCOME 467,969,164 (3,120,476) 464,848,687 (123,129,742) 341,718,945 (15,593,046) 326,125,899
872 OTHER TAX AT0.1 PERCENT 467,969 (3,120) 464,849 (123,130) 341,719 (15,593) 326,126
873 ADD:CURRENT YEAR'S TAX DEFICIENCY (276,504) 0 (276,504) 276,504 0 0 0
874 PRIOR YEARS'TAX ADJUSTMENT (4,645) 0 (4,645) 4,645 0 0 0
875 OTHER STATES'INCOME TAX PAID 186,820 (3,120) 183,700 158,019 341,719 (15,593) 326,126
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 23 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
876 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
877 STEAM POWER GENERATION
878 OPERATION
879 500/SUPERVISION&ENGINEERING 727,359 727,359 727,359 727,359
880 501/FUEL 2,759,191 2,759,191 2,759,191 2,759,191
881 502/STEAM EXPENSES 0 0
882 LABOR 2,042,152 2,042,152 2,042,152 2,042,152
883 OTHER 0 0 0 0
884 2,042,152 2,042,152
885 505/ELECTRIC EXPENSES 0 0
886 LABOR 979,344 979,344 979,344 979,344
887 OTHER 0 0 0 0
888 979,344 979,344
889 506/MISCELLANEOUS EXPENSES 3,185,521 3,185,521 3,185,521 3,185,521
890 507/RENTS 0 0 0 0
891 STEAM OPERATION EXPENSES 9,693,567 9,693,567 9,693,567 9,693,567
892
893 MAINTENANCE
894 510/SUPERVISION&ENGINEERING 0 0 0 0
895 511 /STRUCTURES (1,835) (1,835) (1,835) (1,835)
896 512/BOILER PLANT 0 0
897 LABOR 3,338,587 3,338,587 3,338,587 3,338,587
898 OTHER 0 0 0 0
899 TOTAL ACCOUNT 512 3,338,587 3,338,587
900 513/ELECTRIC PLANT 0 0
901 LABOR 1,472,428 1,472,428 1,472,428 1,472,428
902 OTHER 0 0 0 0
903 TOTAL ACCOUNT 513 1,472,428 1,472,428
904 514/MISCELLANEOUS STEAM PLANT 2,151,572 2,151,572 2,151,572 2,151,572
905 STEAM MAINTENANCE EXPENSES 6,960,752 6,960,752 6,960,752 6,960,752
906 TOTAL STEAM GENERATION EXPENSES 16,654,320 16,654,320 16,654,320 0 16,654,320
907
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 24 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
908 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
909 HYDRAULIC POWER GENERATION
910 OPERATION
911 535/SUPERVISION&ENGINEERING 4,877,607 4,877,607 4,877,607 4,877,607
912 536/WATER FOR POWER 691,962 691,962 691,962 691,962
913 537/HYDRAULIC EXPENSES 7,716,043 7,716,043 7,716,043 7,716,043
914 538/ELECTRIC EXPENSES
915 LABOR 1,762,303 1,762,303 1,762,303 1,762,303
916 OTHER 0 0 0 0
917 TOTAL ACCOUNT 538 1,762,303 1,762,303 1,762,303 1,762,303
918 539/MISCELLANEOUS EXPENSES 4,313,693 4,313,693 4,313,693 4,313,693
919 540/RENTS 0 0 0 0
920 HYDRAULIC OPERATION EXPENSES 19,361,608 19,361,608 19,361,608 19,361,608
921
922 MAINTENANCE
923 541/SUPERVISION&ENGINEERING 154,757 154,757 154,757 154,757
924 542/STRUCTURES 676,032 676,032 676,032 676,032
925 543/RESERVOIRS,DAMS&WATERWAYS 416,249 416,249 416,249 416,249
926 544/ELECTRIC PLANT 0 0
927 LABOR 2,318,409 2,318,409 2,318,409 2,318,409
928 OTHER 0 0 0 0
929 TOTAL ACCOUNT 544 2,318,409 2,318,409 2,318,409 2,318,409
930 545/MISCELLANEOUS HYDRAULIC PLANT 3,040,245 3,040,245 3,040,245 3,040,245
931 HYDRAULIC MAINTENANCE EXPENSES 6,605,693 6,605,693 6,605,693 6,605,693
932 TOTAL HYDRAULIC GENERATION EXPENSES 25,967,301 25,967,301 25,967,301 25,967,301
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 25 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
933 TABLE 13-DEVELOPMENT OF LABOR RELATED ALL OCATOR
934 OTHER POWER GENERATION
935 OPERATION
936 546/SUPERVISION&ENGINEERING 528,253 528,253 528,253 528,253
937 547/FUEL 0 0 0 0
938 548/GENERATING EXPENSES 0 0
939 LABOR 3,885,263 3,885,263 3,885,263 3,885,263
940 OTHER 0 0 0 0
941 TOTAL ACCOUNT 548 0 3,885,263 3,885,263
942 549/MISCELLANEOUS EXPENSES 501,221 501,221 501,221 501,221
943 550/RENTS 0 0 0 0
944 OTHER POWER OPER EXPENSES 4,914,736 4,914,736 4,914,736 4,914,736
945
946 MAINTENANCE
947 551/SUPERVISION&ENGINEERING 0 0 0 0
948 552/STRUCTURES 53,983 53,983 53,983 53,983
949 553/GENERATING&ELECTRIC PLANT 0 0
950 LABOR 63,357 63,357 63,357 63,357
951 OTHER 0 0 0
952 TOTAL ACCOUNT 553 0 63,357 63,357
953 554/MISCELLANEOUS EXPENSES 506,834 506,834 506,834 506,834
954 OTHER POWER MAINTEXPENSES 624,175 624,175 624,175 624,175
955 TOTAL OTHER POWER GENERATION EXP 5,538,912 5,538,912 5,538,912 5,538,912
956
957 OTHER POWER SUPPLY EXPENSE
958 555.0/PURCHASED POWER 0 0 0 0
959 555.1/COGENERATION&SMALL POWER PROD 0 0
960 CAPACITY RELATED 0 0 0 0
961 ENERGY RELATED 0 0 0 0
962 TOTAL 555.1/CSPP
963 555/TOTAL
964 556/LOAD CONTROL&DISPATCHING EXPENSES 70 70 70 70
965 557/OTHER EXPENSES 5,827,280 5,827,280 5,827,280 5,827,280
966 TOTAL OTHER POWER SUPPLY EXPENSES 5,827,350 5,827,350 5,827,350 5,827,350
967 0 0
968 TOTAL PRODUCTION EXPENSES 53,987,883 53,987,883 53,987,883 53,987,883
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 26 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
969 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
970 TRANSMISSION EXPENSES
971 OPERATION
972 560/SUPERVISION&ENGINEERING 2,064,077 2,064,077 2,064,077 2,064,077
973 561/LOAD DISPATCHING 3,193,885 3,193,885 3,193,885 3,193,885
974 562/STATION EXPENSES 1,873,805 1,873,805 1,873,805 1,873,805
975 563/OVERHEAD LINE EXPENSES 496,615 496,615 496,615 496,615
976 565/TRANSMISSION OF ELECTRICITY BY OTHERS 0 0 0 0
977 566/MISCELLANEOUS EXPENSES 0 0 0 0
978 567/RENTS 0 0 0 0
979 TOTAL TRANSMISSION OPERATION 7,628,381 7,628,381 7,628,381 7,628,381
980 0 0
981 MAINTENANCE 0 0
982 568/SUPERVISION&ENGINEERING 233,122 233,122 233,122 233,122
983 569/STRUCTURES 1,237,220 1,237,220 1,237,220 1,237,220
984 570/STATION EQUIPMENT 2,468,383 2,468,383 2,468,383 2,468,383
985 571/OVERHEAD LINES 1,275,470 1,275,470 1,275,470 1,275,470
986 573/MISCELLANEOUS PLANT 629 629 629 629
987 TOTAL TRANSMISSION MAINTENANCE 5,214,823 5,214,823 5,214,823 5,214,823
988 0 0
989 TOTAL TRANSMISSION EXPENSES 12,843,204 12,843,204 12,843,204 12,843,204
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 27 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(�) (2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
990 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
991 DISTRIBUTION EXPENSES
992 OPERATION
993 580/SUPERVISION&ENGINEERING 3,389,945 3,389,945 3,389,945 3,389,945
994 581/LOAD DISPATCHING 4,902,828 4,902,828 4,902,828 4,902,828
995 582/STATION EXPENSES 1,083,682 1,083,682 1,083,682 1,083,682
996 583/OVERHEAD LINE EXPENSES 4,494,833 4,494,833 4,494,833 4,494,833
997 584/UNDERGROUND LINE EXPENSES 1,666,400 1,666,400 1,666,400 1,666,400
998 585/STREET LIGHTING&SIGNAL SYSTEMS 0 0 0 0
999 586/METER EXPENSES 5,083,662 5,083,662 5,083,662 5,083,662
1000 587/CUSTOMER INSTALLATIONS EXPENSE 950,364 950,364 950,364 950,364
1001 588/MISCELLANEOUS EXPENSES 2,806,259 2,806,259 2,806,259 2,806,259
1002 589/RENTS 0 0 0 0
1003 TOTAL DISTRIBUTION OPERATION 24,377,974 24,377,974 24,377,974 24,377,974
1004
1005 MAINTENANCE
1006 590/SUPERVISION&ENGINEERING 5,968 5,968 5,968 5,968
1007 591/STRUCTURES 0 0 0 0
1008 592/STATION EQUIPMENT 3,228,672 3,228,672 3,228,672 3,228,672
1009 593/OVERHEAD LINES 6,306,916 6,306,916 6,306,916 6,306,916
1010 594/UNDERGROUND LINES 321,023 321,023 321,023 321,023
1011 595/LINE TRANSFORMERS 22,838 22,838 22,838 22,838
1012 596/STREET LIGHTING&SIGNAL SYSTEMS 84,070 84,070 84,070 84,070
1013 597/METERS 804,362 804,362 804,362 804,362
1014 5981 MISCELLANEOUS PLANT 126,474 126,474 126,474 126,474
1015 TOTAL DISTRIBUTION MAINTENANCE 10,900,323 10,900,323 10,900,323 10,900,323
1016 TOTAL DISTRIBUTION EXPENSES 35,278,296 35,278,296 35,278,296 35,278,296
1017
1018 CUSTOMER ACCOUNTING EXPENSES
1019 901/SUPERVISION 790,802 790,802 790,802 790,802
1020 902/METER READING 1,321,230 1,321,230 1,321,230 1,321,230
1021 903/CUSTOMER RECORDS&COLLECTIONS 11,435,155 11,435,155 11,435,155 11,435,155
1022 904/UNCOLLECTIBLE ACCOUNTS 0 0 0 0
1023 905/MISC EXPENSES 0 0 0 0
1024 TOTAL CUSTOMER ACCOUNTING EXPENSES 13,547,188 13,547,188 13,547,188 13,547,188
1025
1026 CUSTOMER SERVICES&INFORMATION EXPENSES
1027 907/SUPERVISION 992,871 992,871 992,871 992,871
1028 908/CUSTOMER ASSISTANCE 8,260,121 8,260,121 8,260,121 8,260,121
1029 908/DSM RIDER 0 0 0 0
1030 909/INFORMATION&INSTRUCTIONAL 0 0 0 0
1031 910/MISCELLANEOUS EXPENSES 384,003 384,003 384,003 384,003
1032 TOTAL CUST SERV&INFORMATN EXPENSES 9,636,994 9,636,994 9,636,994 9,636,994
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 28 of 29

IDAHO POWER COMPANY
DEVELOPMENT OF SYSTEM REVENUE REQUIREMENT
FOR THE TEST YEAR ENDING DECEMBER 31,2025
(2) (3) (4) (5) (6) (7) (8) (9)
2 2024 2024 Actual 2024 Test Year 2025 Unadjusted Annualizing 2025
3 Description Actual Adiustments Base Adjustment Test Year Adjustment Test Year
1033 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
1034 ADMINISTRATIVE&GENERAL EXPENSES
1035 920/ADMINISTRATIVE&GENERAL SALARIES 62,498,391 62,498,391 62,498,391 62,498,391
1036 921/OFFICE SUPPLIES 435,005 435,005 435,005 435,005
1037 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR 0 0 0 0
1038 923/OUTSIDE SERVICES 0 0 0 0
1039 924/PROPERTY INSURANCE 0 0
1040 PRODUCTION-STEAM 0 0 0 0
1041 ALL RISK&MISCELLANEOUS 469,600 469,600 469,600 469,600
1042 TOTAL ACCOUNT 924
1043 925/INJURIES&DAMAGES 164,102 164,102 164,102 164,102
1044 926/EMPLOYEE PENSIONS&BENEFITS 0 0 0 0
1045 927/FRANCHISE REQUIREMENTS 0 0 0 0
1046 928/REGULATORY COMMISSION EXPENSES
1047 928.101/FERC ADMIN ASSESS&SECURITIES
1048 CAPACITY RELATED 0 0 0 0
1049 ENERGY RELATED 0 0 0 0
1050 928.101/FERC ORDER 472 0 0 0 0
1051 928.101/FERC MISCELLANIOUS 0 0 0 0
1052 928.102 FERC RATE CASE 0 0 0 0
1053 928.104/FERC OREGON HYDRO 0 0 0 0
1054 SEC EXPENSES 0 0 0 0
1055 928.202/IDAHO PUC -RATE CASE 0 0 0 0
1056 928.203/IDAHO PUC-OTHER 0 0 0 0
1057 928.301/OREGON PUC-FILING FEES 0 0 0 0
1058 928.302/OREGON PUC-RATE CASE 0 0 0 0
1059 928.303/OREGON PUC-OTHER 0 0 0 0
1060 IPC/PUC JSS TRUE-UP ADJ 0 0 0 0
1061 TOTAL ACCOUNT 928
1062 929/DUPLICATE CHARGES 0 0 0 0
1063 930.1/GENERAL ADVERTISING 0 0 0 0
1064 930.2/MISCELLANEOUS EXPENSES 161,675 161,675 161,675 161,675
1065 931/RENTS 0 0 0 0
1066 TOTAL ADM&GEN OPERATION 63,728,773 63,728,773 63,728,773 0 63,728,773
1067 PLUS: 0 0
1068 935/GENERAL PLANT MAINTENANCE 1,333,128 1,333,128 1,333,128 1,333,128
1069 416/MERCHANDISING EXPENSE 0 0 0 0
1070 TOTAL OPER&MAINT EXPENSES 190,355,467 190,355,467 190,355,467 0 190,355,467
Exhibit No.28
Case No.IPC-E-25-16
K.Noe,IPC
Page 29 of 29

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-25-16
IDAHO POWER COMPANY
NOE3 DI
TESTIMONY
EXHIBIT NO. 29

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
1 FOR THE TEST YEAR ENDING DECEMBER 31,2025
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
4 SUMMARY OF RESULTS
5 RATE OF RETURN UNDER PRESENT RATES
6 TOTAL COMBINED RATE BASE 5,371,452,912 5,143,426,242 228,026,670
7
8 OPERATING REVENUES
9 FIRM JURISDICTIONAL SALES 1,582,969,614 1,520,999,814 61,969,799
10 SYSTEM OPPORTUNITY SALES 101,120,022 96,943,239 4,176,784
11 OTHER OPERATING REVENUES 98,768,424 95,097,848 3,670,576
12 TOTAL OPERATING REVENUES 1,782,858,060 1,713,040,901 69,817,159
13 OPERATING EXPENSES
14 OPERATION&MAINTENANCE EXPENSES 1,104,426,399 1,058,531,882 45,894,517
15 DEPRECIATION EXPENSE 193,244,317 185,236,719 8,007,598
16 AMORTIZATION OF LIMITED TERM PLANT 10,032,555 9,615,533 417,022
17 TAXES OTHER THAN INCOME 14,122,195 12,376,472 1,745,723
18 REGULATORY DEBITS/CREDITS 15,983,039 15,655,686 327,353
19 PROVISION FOR DEFERRED INCOME TAXES (14,416,560) (13,729,241) (687,319)
20 INVESTMENT TAX CREDIT ADJUSTMENT 50,890,271 48,744,722 2,145,549
21 FEDERAL INCOME TAXES 31,085,507 30,802,383 283,124
22 STATE INCOME TAXES (5,592,003) (5,092,615) (499,389)
23 TOTAL OPERATING EXPENSES 1,399,775,720 1,342,141,542 57,634,177
24 OPERATING INCOME 383,082,341 370,899,359 12,182,982
25 ADD: IERCO OPERATING INCOME 2,923,000 2,802,265 120,735
26 CONSOLIDATED OPERATING INCOME 386,005,341 373,701,624 12,303,717
27 RATE OF RETURN UNDER PRESENT RATES 7.19% 7.27% 5.40%
28
29 DEVELOPMENT OF REVENUE REQUIREMENTS
30 RATE OF RETURN @ 10.4%ROE 7.818% 7.818% 7.818%
31
32 RETURN 419,917,437 402,091,278 17,826,159
33 EARNINGS DEFICIENCY 33,912,096 28,389,654 5,522,442
34 ADD:OTHER CIDA 0 0 0
35 EARNINGS DEFICIENCY 33,912,096 28,389,654 5,522,442
36
37 NET-TO-GROSS TAX MULTIPLIER 1.334 1.334 1.334
38 REVENUE DEFICIENCY 45,233,650 37,867,540 7,366,109
39
40 ADD:CWIP-HCC RELICENSING AFUDC(IDAHO) CIDA 38,512,240 38,512,240 0
41 ADD:VALMY REVENUE REQUIREMENT CIDA 37,746,361 37,746,361 0
42 ADD:BRIDGER REVENUE REQUIREMENT CIDA 85,208,499 85,208,499 0
43 LESS:EMPLOYEE HOUSING AND TRAILER REV REQ CIDA 211,956 211,956 0
44 REVENUE DEFICIENCY WITH HCC AFUDC,VALMY,AND BRIDGER 206,488,795 199,122,685 7,366,109
45
46 FIRM JURISDICTIONAL RETAIL REVENUES 1,582,969,614 1,520,999,814 61,969,799
47 PERCENT INCREASE REQUIRED 13.04% 13.09%
48
49 SALES AND WHEELING REVENUES REQUIRED 1,789,458,408 1,720,122,500 69,335,909
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 1 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
50 SUMMARY OF RESULTS
51 DEVELOPMENT OF RATE BASE COMPONENTS
52 ELECTRIC PLANT IN SERVICE
53 INTANGIBLE PLANT 165,495,448 158,740,837 6,754,611
54 PRODUCTION PLANT 2,741,036,657 2,634,771,404 106,265,254
55 TRANSMISSION PLANT 1,619,244,918 1,556,977,189 62,267,728
56 DISTRIBUTION PLANT 2,580,736,413 2,456,634,052 124,102,361
57 GENERAL PLANT 598,032,726 572,819,492 25,213,234
58 TOTAL ELECTRIC PLANT IN SERVICE 7,704,546,162 7,379,942,974 324,603,188
59 LESS:ACCUM PROVISION FOR DEPRECIATION 2,268,292,236 2,172,152,569 96,139,666
60 AMORT OF OTHER UTILITY PLANT 54,678,072 52,446,850 2,231,222
61 NET ELECTRIC PLANT IN SERVICE 5,381,575,855 5,155,343,555 226,232,300
62 LESS:CUSTOMER ADV FOR CONSTRUCTION 22,015,991 21,998,945 17,046
63 LESS:ACCUM DEFERRED INCOME TAXES 347,370,470 332,513,871 14,856,599
64 ADD:PLT HLD FOR FUTURE+ACQUIS ADJ 13,959,869 13,453,639 506,230
65 ADD:WORKING CAPITAL 195,816,770 187,340,847 8,475,923
66 ADD:CONSERVATION+OTHER DFRD PROG. 108,338,065 102,351,864 5,986,201
67 ADD:SUBSIDIARY RATE BASE 41,148,812 39,449,152 1,699,660
68 TOTAL COMBINED RATE BASE 5,371,452,912 5,143,426,242 228,026,670
69
70 DEVELOPMENT OF NET INCOME COMPONENTS
71 OPERATING REVENUES
72 SALES REVENUES 1,684,089,636 1,617,943,053 66,146,583
73 OTHER OPERATING REVENUES 98,768,424 95,097,848 3,670,576
74 TOTAL OPERATING REVENUES 1,782,858,060 1,713,040,901 69,817,159
75 OPERATING EXPENSES
76 OPERATION&MAINTENANCE EXPENSES 1,104,426,399 1,058,531,882 45,894,517
77 DEPRECIATION EXPENSE 193,244,317 185,236,719 8,007,598
78 AMORTIZATION OF LIMITED TERM PLANT 10,032,555 9,615,533 417,022
79 TAXES OTHER THAN INCOME 14,122,195 12,376,472 1,745,723
80 REGULATORY DEBITS/CREDITS 15,983,039 15,655,686 327,353
81 PROVISION FOR DEFERRED INCOME TAXES (14,416,560) (13,729,241) (687,319)
82 INVESTMENT TAX CREDIT ADJUSTMENT 50,890,271 48,744,722 2,145,549
83 FEDERAL INCOME TAXES 31,085,507 30,802,383 283,124
84 STATE INCOME TAXES (5,592,003) (5,092,615) (499,389)
85 TOTAL OPERATING EXPENSES 1,399,775,720 1,342,141,542 57,634,177
86 OPERATING INCOME 383,082,341 370,899,359 12,182,982
87 ADD: IERCO OPERATING INCOME E10 2,923,000 2,802,265 120,735
88 CONSOLIDATED OPERATING INCOME 386,005,341 373,701,624 12,303,717
89
90 NET POWER SUPPLY COSTS:
91 ACCT447/SURPLUS SALES (101,120,022) (96,943,239) (4,176,784)
92 ACCT 501/FUEL-THERMAL PLANTS 125,801,910 120,605,636 5,196,274
93 ACCT547/FUEL-OTHER 77,935,055 74,715,931 3,219,124
94 ACCT 555/NON-FIRM PURCHASES 161,407,785 154,740,803 6,666,982
95 ACCT 555/DEMAND RESPONSE INCENTIVE 9,342,758 9,342,758 0
96 ACCT 555/CSPP PURCHASES 226,719,444 217,354,750 9,364,694
97 SUBTOTAL 500,086,930 479,816,640 20,270,290
98 ACCT 577/BATTERY STORAGE RENTS 21,546,000 20,710,699 835,301
99 ACCT 565/TRANS OF ELECTRICTY BY OTHERS 12,961,923 12,426,528 535,395
100 TOTAL NET POWER SUPPLY COSTS 534,594,853 512,953,867 21,640,986
101 OTHER O&M
1021 TOTAL O&M EXPENSES 1,104,426,399 1,058,531,882 45,894,517 Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 2 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
103 LESS: ACCT 501/FUEL-THERMAL PLANTS (125,801,910) (120,605,636) (5,196,274)
104 ACCT 547/FUEL-OTHER (77,935,055) (74,715,931) (3,219,124)
105 ACCT 555/NON-FIRM PURCHASES (161,407,785) (154,740,803) (6,666,982)
106 ACCT 555/DEMAND RESPONSE INCENTIVE (9,342,758) (9,342,758) 0
107 ACCT 555/CSPP PURCHASES (226,719,444) (217,354,750) (9,364,694)
108 SUBTOTAL 503,219,446 481,772,003 21,447,443
109 ACCT 577/13ATTERY STORAGE RENTS (21,546,000) (20,710,699) (835,301)
110 ACCT 565/TRANS OF ELECTRICTY BY OTHERS (12,961,923) (12,426,528) (535,395)
111 ACCT416/MERCHANDISING EXPENSE (5,547,045) (5,349,511) 197534
112 NET OTHER O&M 463,164,478 443,285,265 19,879,213
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 3 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
113 TABLE 1-ELECTRIC PLANT IN SERVICE
114 INTANGIBLE PLANT
115 301-ORGANIZATION P101P $ 5,703 5,463 240
116 302-FRANCHISES&CONSENTS D10 65,661,535 63,115,951 2,545,584
117 303-MISCELLANEOUS P101P 99,828,210 95,619,423 4,208,786
118
119 TOTAL INTANGIBLE PLANT 165,495,448 158,740,837 6,754,611
120
121 PRODUCTION PLANT
122 310-316/STEAM PRODUCTION D10 361,714,827 347,691,768 14,023,059
123 330-336/HYDRAULIC PRODUCTION D10 1,229,111,833 1,181,461,292 47,650,541
124 340-346/OTHER PRODUCTION-BASE LOAD D10 402,185,424 386,593,390 15,592,034
125 340-346/OTHER PRODUCTION-PEAKERS D10 234,126,570 225,049,888 9,076,682
126
127 TOTAL PRODUCTION PLANT 2,227,138,655 2,140,796,338 86,342,316
128
129 TRANSMISSION PLANT
130 350/LAND&LAND RIGHTS-SYSTEM SERVICE D11 46,046,937 44,278,843 1,768,093
131 DIRECT ASSIGNMENT DA350 0 0 0
132 TOTAL ACCOUNT 350 46,046,937 44,278,843 1,768,093
133
134 352/STRUCTURES&IMPROVEMENTS-SYSTEM SERVICE D11 132,016,242 126,947,131 5,069,111
135 DIRECT ASSIGNMENT DA352 658 0 658
136 TOTAL ACCOUNT 352 132,016,900 126,947,131 5,069,769
137
138 353/STATION EQUIPMENT-SYSTEM SERVICE D11 549,786,110 528,675,625 21,110,485
139 DIRECT ASSIGNMENT DA353 36,494 0 36,494
140 TOTAL ACCOUNT 353 549,822,604 528,675,625 21,146,979
141
142 354/TOWERS&FIXTURES-SYSTEM SERVICE D11 272,199,855 261,748,025 10,451,830
143 DIRECT ASSIGNMENT DA354 0 0 0
144 TOTAL ACCOUNT 354 272,199,855 261,748,025 10,451,830
145
146 355/POLES&FIXTURES-SYSTEM SERVICE D11 290,019,317 278,883,261 11,136,055
147 DIRECT ASSIGNMENT DA355 33,842 0 33,842
148 TOTAL ACCOUNT 355 290,053,159 278,883,261 11,169,897
149
150 356/OVERHEAD CONDUCTORS&DEVICES-SYSTEM SERVICE D11 328,666,163 316,046,160 12,620,003
151 DIRECT ASSIGNMENT DA356 26,495 1,189 25,306
152 TOTAL ACCOUNT 356 328,692,658 316,047,349 12,645,309
153
154 359/ROADS&TRAILS-SYSTEM SERVICE D11 412,805 396,954 15,851
155 DIRECT ASSIGNMENT DA359 0 0 0
156 TOTAL ACCOUNT 359 412,805 396,954 15,851
157
158 TOTAL TRANSMISSION PLANT 1,619,244,918 1,556,977,189 62,267,728
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 4 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
159 TABLE 1-ELECTRIC PLANT IN SERVICE
160
161 DISTRIBUTION PLANT
162 360/LAND&LAND RIGHTS-SYSTEM SERVICE ACCT360 11,225,298 10,764,412 460,886
163 PLUS:ADJUSTMENT FOR CIAC ACCT360CIAC 1,071,862 1,071,584 278
164 DISTRIBUTION PLANT+CIAC 12,297,160 11,835,996 461,164
165
166 361/STRUCTURES&IMPROVEMENTS-SYSTEM SERVICE ACCT361 78,727,556 75,735,715 2,991,841
167 PLUS:ADJUSTMENT FOR CIAC ACCT361CIAC 9,043,182 8,458,724 584,458
168 DISTRIBUTION PLANT+CIAC 87,770,738 84,194,439 3,576,298
169
170 362/STATION EQUIPMENT-SYSTEM SERVICE ACCT362 405,742,505 389,840,614 15,901,892
171 PLUS:ADJUSTMENT FOR CIAC ACCT362CIAC 51,658,911 47,977,542 3,681,370
172 DISTRIBUTION PLANT+CIAC 457,401,417 437,818,155 19,583,262
173
174 363/STORAGE BATTERY EQUIPMENT-DISTRIBUTION D10 0 0 0
175 TOTAL BATTERY STORAGE EQUIPMENT 0 0 0
176
177 364/POLES,TOWERS&FIXTURES DA364 382,378,765 350,806,813 31,571,952
178 365/OVERHEAD CONDUCTORS&DEVICES DA365 179,449,314 168,456,692 10,992,622
179 366/UNDERGROUND CONDUIT DA366 62,766,242 61,492,818 1,273,424
180 367/UNDERGROUND CONDUCTORS&DEVICES DA367 385,991,496 379,445,045 6,546,450
181 368/LINE TRANSFORMERS DA368 855,962,435 809,399,937 46,562,498
182 369/SERVICES DA369 75,491,066 72,434,575 3,056,490
183 370/METERS DA370 130,461,971 126,489,532 3,972,438
184 371/INSTALLATIONS ON CUSTOMER PREMISES DA371 5,601,369 5,216,377 384,993
185 373/STREET LIGHTING SYSTEMS DA373 6,938,397 6,551,522 386,876
186
187 TOTAL DISTRIBUTION PLANT(without CIAC) 2,580,736,413 2,456,634,052 124,102,361
188
189 387/ENERGY STORAGE PLANT D10 513,898,003 493,975,066 19,922,937
190 TOTAL ENERGY STORAGE PLANT 513,898,003 493,975,066 19,922,937
191
192 GENERAL PLANT
193 389/LAND&LAND RIGHTS PTD 21,319,481 20,420,646 898,836
194 390/STRUCTURES&IMPROVEMENTS PTD 201,587,697 193,088,701 8,498,996
195 391/OFFICE FURNITURE&EQUIPMENT PTD 42,261,168 40,479,425 1,781,743
196 392/TRANSPORTATION EQUIPMENT PTD 156,162,891 149,579,018 6,583,873
197 393/STORES EQUIPMENT PTD 10,592,301 10,145,727 446,575
198 394/TOOLS,SHOP&GARAGE EQUIPMENT PTD 16,990,502 16,274,178 716,325
199 395/LABORATORY EQUIPMENT PTD 16,964,090 16,248,879 715,211
200 396/POWER OPERATED EQUIPMENT PTD 32,662,999 31,285,918 1,377,082
201 397/COMMUNICATIONS EQUIPMENT PTD 87,951,650 84,243,583 3,708,067
202 398/MISCELLANEOUS EQUIPMENT PTD 11,539,945 11,053,418 486,527
203
204 TOTAL GENERAL PLANT 598,032,726 572,819,492 25,213,234
205
206 TOTAL ELECTRIC PLANT IN SERVICE(without CIAC) 7,704,546,162 7,379,942,974 324,603,188
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 5 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
207 TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION
208
209 PRODUCTION PLANT
210 310-316/STEAM PRODUCTION L 122 199,012,775 191,297,394 7,715,381
211 330-336/HYDRAULIC PRODUCTION L 123 555,919,511 534,367,473 21,552,039
212 340-346/OTHER PRODUCTION-BASE LOAD L 124 85,432,230 82,120,170 3,312,060
213 340-346/OTHER PROD UCTION-PEAKERS L 125 67,271,310 64,663,317 2,607,992
214 TOTAL PRODUCTION PLANT 907,635,826 872,448,353 35,187,472
215
216 TRANSMISSION PLANT
217 350/LAND&LAND RIGHTS L 132 11,119,342 10,692,385 426,956
218 352/STRUCTURES&IMPROVEMENTS L 136 38,158,280 36,692,909 1,465,371
219 353/STATION EQUIPMENT L 140 134,660,566 129,481,325 5,179,242
220 354/TOWERS&FIXTURES L 144 84,859,646 81,601,237 3,258,410
221 355/POLES&FIXTURES L 148 85,312,238 82,026,878 3,285,360
222 356/OVERHEAD CONDUCTORS&DEVICES L 152 91,186,768 87,678,674 3,508,094
223 359/ROADS&TRAILS L 156 302,960 291,327 11,633
224 TOTAL TRANSMISSION PLANT 445,599,800 428,464,735 17,135,065
225
226 DISTRIBUTION PLANT
227 360/LAND&LAND RIGHTS L 162 296,874 284,685 12,189
228 361/STRUCTURES&IMPROVEMENTS L 166 18,872,261 18,155,069 717,192
229 362/STATION EQUIPMENT L 170 80,438,529 77,285,976 3,152,553
230 363/STORAGE BATTERY EQUIPMENT L 174 0 0 0
231 364/POLES,TOWERS&FIXTURES L 177 145,585,843 133,565,225 12,020,619
232 365/OVERHEAD CONDUCTORS&DEVICES L 178 57,624,160 54,094,247 3,529,914
233 366/UNDERGROUND CONDUIT L 179 20,955,777 20,530,619 425,158
234 367/UNDERGROUND CONDUCTORS&DEVICES L 180 115,246,490 113,291,899 1,954,591
235 368/LINE TRANSFORMERS L 181 210,511,682 199,060,304 11,451,378
236 369/SERVICES L 182 46,857,828 44,960,643 1,897,185
237 370/METERS L 183 43,676,580 42,346,672 1,329,909
238 371/INSTALLATIONS ON CUSTOMER PREMISES L 184 898,304 836,562 61,742
239 373/STREET LIGHTING SYSTEMS L 185 743,009 701,580 41,429
240 TOTAL DISTRIBUTION PLANT 741,707,339 705,113,480 36,593,859
241
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 6 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
242 TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION
243
244 387/ENERGY STORAGE PLANT L 190 24,040,423 23,108,418 932,006
245 TOTAL ENERGY STORAGE PLANT 24,040,423 23,108,418 932,006
246
247 GENERAL PLANT
248 389/LAND&LAND RIGHTS L 193 0 0 0
249 390/STRUCTURES&IMPROVEMENTS L 194 38,438,373 36,817,800 1,620,573
250 391/OFFICE FURNITURE&EQUIPMENT L 195 19,840,810 19,004,316 836,494
251 392/TRANSPORTATION EQUIPMENT L 196 21,534,315 20,626,422 907,893
252 393/STORES EQUIPMENT L 197 2,045,066 1,958,845 86,221
253 394/TOOLS,SHOP&GARAGE EQUIPMENT L 198 6,093,588 5,836,680 256,907
254 395/LABORATORY EQUIPMENT L 199 7,856,482 7,525,250 331,232
255 396/POWER OPERATED EQUIPMENT L 200 7,411,492 7,099,022 312,471
256 397/COMMUNICATIONS EQUIPMENT L 201 38,561,556 36,935,790 1,625,766
257 398/MISCELLANEOUS EQUIPMENT L 202 4,822,372 4,619,059 203,313
258 TOTAL GENERAL PLANT 146,604,053 140,423,184 6,180,870
259
260 AMORTIZATION OF DISALLOWED COSTS L 119 2,704,795 2,594,400 110,395
261
262 TOTAL ACCUM PROVISION DEPRECIATION 2,268,292,236 2,172,152,569 96,139,666
263
264 AMORTIZATION OF OTHER UTILITY PLANT
265 302/FRANCHISES AND CONSENTS L 116 21,822,142 20,976,136 846,007
266 303/MISCELLANEOUS INTANGIBLE PLANT L 117 32,855,930 31,470,714 1,385,216
267
268 TOTAL AMORT OF OTHER UTILITY PLANT 54,678,072 52,446,850 2,231,222
269
270 TOTAL ACCUM PROVISION FOR DEPR
271 &AMORTIZATION OF OTHER UTILITY PLANT 2,322,970,308 2,224,599,419 98,370,889
272
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 7 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
273 TABLE 3-ADDITIONS&DEDUCTIONS TO RATEBASE
274
275 NET ELECTRIC PLANT IN SERVICE 5,381,575,855 5,155,343,555 226,232,300
276 LESS:
277 252 CUSTOMER ADVANCES FOR CONSTRUCTION
278 POWER SUPPLY D10 0 0 0
279 OTHER DA252 22,015,991 21,998,945 17,046
280 TOTAL CUSTOMER ADV FOR CONSTRUCTION 22,015,991 21,998,945 17,046
281
282 ACCUMULATED DEFERRED INCOME TAXES
283 190/ACCUMULATED DEFERRED INCOME TAXES
284 CUSTOMER ADVANCES FOR CONSTUCTION DA252 (4,889,310) (4,885,525) (3,785)
285 OTHER LABOR (13,743,991) (13,173,550) (570,441)
286 TOTAL ACCOUNT 190 (18,633,301) (18,059,074) (574,227)
287 281/ACCELERATED AMORTIZATION P101 P 0 0 0
288 282/OTHER PROPERTY P 101 P 347,060,763 332,428,580 14,632,183
289283/OTHER P101P 18,943,008 18,144,365 798,643
290 TOTAL ACCUM DEFERRED INCOME TAXES 347,370,470 332,513,871 14,856,599
291
292 NET ELECTRIC PLANT IN SERVICE 5,012,189,394 4,800,830,739 211,358,655
293 ADD:
294 WORKING CAPITAL
295 151/FUEL INVENTORY E10 29,491,052 28,272,918 1,218,134
296 154&163/PLANT MATERIALS&SUPPLIES
297 PRODUCTION-GENERAL L 127 14,639,363 14,071,820 567,543
298 TRANSMISSION-GENERAL L 158 60,853,574 58,513,463 2,340,112
299 DISTRIBUTION-GENERAL L 187+CIAC 81,159,708 77,217,113 3,942,595
300 OTHER-UNCLASSIFIED L 206 9,673,074 9,265,534 407,540
301 TOTAL ACCOUNT 154&163 166,325,719 159,067,930 7,257,789
302 165/PREPAID ITEMS
303 AD VALOREM TAXES L 723 0 0 0
304 OTHER PROD-RELATED PREPAYMENTS D10 0 0 0
305 INSURANCE L 127 0 0 0
306 PENSION EXPENSE L 1067 0 0 0
307 PREPAID RETIREE BENEFITS L 1067 0 0 0
308 MISCELLANEOUS PREPAYMENTS P101P 0 0 0
309 TOTAL ACCOUNT165 0 0 0
310 WORKING CASH ALLOWANCE L 640 0 0 0
311
312 TOTAL WORKING CAPITAL 195,816,770 187,340,847 8,475,923
313
314 NET ELECTRIC PLANT IN SERVICE 5,208,006,164 4,988,171,586 219,834,578
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 8 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
315 TABLE 3-ADDITIONS&DEDUCTIONS TO RATEBASE
316
317 NET ELECTRIC PLANT IN SERVICE 5,208,006,164 4,988,171,586 219,834,578
318 ADD:
319 105/PLANT HELD FOR FUTURE USE
320 HYDRAULIC PRODUCTION L 123 0 0 0
321 TRANS LAND&LAND RIGHTS L 132 5,742,921 5,522,407 220,515
322 TRANS STRUCTURES&IMPROVEMENTS L 136 0 0 0
323 TRANS STATION EQUIPMENT L 140 0 0 0
324 DIST LAND&LAND RIGHTS L 164 7,618,737 7,333,021 285,716
325 DIST STRUCTURES&IMPROVEMENTS L 168 0 0 0
326 DIST STATIONS EQUIPMENT 0
327 GEN LAND&LAND RIGHTS L 193 0 0 0
328 GEN STRUCTURES&IMPROVEMENTS L 194 0 0 0
329 OTHER PRODUCTION LAND&LAND RIGHTS L 196 0 0 0
330 TOTAL PLANT HELD FOR FUTURE USE 13,361,658 12,855,428 506,230
331
332 114/115-ASSET EXCHANGE ACQUISITION ADJUSTMENT CIDA 598,211 598,211 0
333
334 DEFERRED PROGRAMS:
335 182/ CONSERVATION PROGRAMS
336 IDAHO DEFERRED CONSERVATION PROGRAMS CIDA 0 0 0
337 OREGON DEFERRED CONSERVATION PROGRAMS CODA 0 0 0
338 TOTAL CONSERVATION PROGRAMS 0 0 0
339 182&186/MISC.OTHER REGULATORY ASSETS
340 CUB FUND GRANT(OPUC ORDER 24-006) CODA 0 0 0
341 CUB FUND GRANT(OPUC ORDERS 23-185&24-153) CODA 0 0 0
342 AM.FALLS BOND REFINANCING D10 0 0 0
343 SFAS 87 CAPITALIZED PENSION-OPUC ORDER 10-064 CODA 7,364,273 0 7,364,273
344 CLOUD COMPUTING-(IPUC Order 34707) CIDA 974,853 974,853 0
345 WILDFIRE MITIGATION(IPUC Order 36042) CIDA 19,055,877 19,055,877 0
346 WILDFIRE MITIGATION(IPUC ORDERS 35077,35717,36042) CIDA 62,869,655 62,869,655 0
347 WESTERN RESOURCE ADEQUACY PROGRAM(IPUC ORDER 35920) CIDA 1,021,778 1,021,778 0
348 INTERVENOR FUNDING(IPUC ORDER 36042) CIDA 0 0 0
349 INTERVENOR FUNDING AMORT(IPUC ORDER 36042) CIDA 191,697 191,697 0
350 SIEMENS LTP RATE BASE&DEFERRED RATE BASE(IPUC Order 33420) CIDA 18,238,004 18,238,004 0
351 SIEMENS LTP RATE BASE&DEFERRED RATE BASE(OPUC ORDER 15-387) CODA 399,567 0 399,567
352 WILDFIRE MITIGATION(OPUC ORDER 24-010) CODA 749,225 0 749,225
353 TOTAL OTHER REGULATORY ASSETS 110,864,929 102,351,864 8,513,065
354 186/MISC.OTHER DEFERRED PROGRAMS 0 0 0
355 254/JIM BRIDGER PLANT END OF LIFE DEPR-OPUC ORD 12-296 CODA (2,526,864) 0 (2,526,864)
356 OTHER CODA 0 0 0
357 TOTAL DEFERRED PROGRAMS 108,338,065 102,351,864 5,986,201
358
359 DEVELOPMENT OF IERCO RATE BASE
360 INVESTMENT IN IERCO E10 25,529,506 24,475,005 1,054,502
361 PREPAID COAL ROYALTIES E10 138,124 132,419 5,705
362 NOTES PAYABLE TO/RECEIVABLE FROM SUBSIDIARY E10 15,481,182 14,841,728 639,453
363 TOTAL SUBSIDIARY RATE BASE 41,148,812 39,449,152 1,699,660
364
365 TOTAL COMBINED RATE BASE 5,371,452,912 5,143,426,242 228,026,670
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 9 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
366 TABLE 4-OPERATING REVENUES
367 FIRM ENERGY SALES
368 440-448/RETAIL RETREV 1,536,188,306 1,474,218,506 61,969,799
369 442/BASE REVENUE TRANSFER-PCA CIDA 46,781,308 46,781,308 0
370 442/BASE REVENUE TRANSFER-EE RIDER CIDA 0 0 0
371 447/SYSTEM OPPORTUNITY SALES E10 89,321,927 85,632,467 3,689,461
372 447.050/TRANSMISSION LOSSES E10 11,798,095 11,310,772 487,323
373 TOTAL SALES OF ELECTRICITY 1,684,089,636 1,617,943,053 66,146,583
374
375 OTHER OPERATING REVENUES
376 415/MERCHANDISING REVENUES D60 4,495,541 4,335,452 160,089
377
378 449/OATT TARIFF REFUND
379 NETWORK D11 0 0 0
380 POINT-TO-POINT D11 0 0 0
381 TOTAL ACCOUNT 449 0 0 0
382
383 451/MISCELLANEOUS SERVICE REVENUES DA451 6,838,793 6,752,488 86,305
384
385 454/RENTS FROM ELECTRIC PROPERTY
386 SUBSTATION EQUIPMENT L 140 3,195,122 3,072,233 122,889
387 TRANSFORMER RENTALS D11 17,330 16,665 665
388 LINE RENTALS D11 0 0 0
389 COGENERATION L 506 1,979,898 1,898,117 81,780
390 DARK FIBER PROJECT CIDA 0 0 0
391 POLE ATTACHMENTS L 177 1,800,552 1,651,886 148,667
392 FACILITIES CHARGES DA454 11,578,208 11,106,803 471,405
393 OTHER RENTALS L 123 1,355,385 1,302,839 52,546
394 WATER LEASE PTD 87,365 83,682 3,683
395 TOTAL ACCOUNT 454 20,013,860 19,132,224 881,636
396
397 456/OTHER ELECTRIC REVENUES
398 TRANSMISSION NETWORK SERVICES-FIRM DA D11 11,046,993 10,622,815 424,178
399 TRANSMISSION NETWORK SERVICES-DIST FACILITIES D60 716,545 691,028 25,517
400 TRANSMISSION POINT-TO-POINT D11 54,418,916 52,329,358 2,089,558
401 PHOTOVOLTAIC STATION SERVICE L 187+CIAC 0 0 0
402 ENERGY EFFICIENCY RIDER CIDA 0 0 0
403 STAND-BY SERVICE DASTNBY 1,158,065 1,158,065 0
404 SIERRA PACIFIC USAGE CHARGE E10 77,848 74,632 3,216
405 ANTELOPE L527 0 0 0
406 MISCELLANEOUS PTD 1,863 1,784 79
407 TOTAL ACCOUNT 456 67,420,230 64,877,684 2,542,547
408
409 TOTAL OTHER OPERATING REVENUES 98,768,424 95,097,848 3,670,576
410
411 TOTAL OPERATING REVENUES 1,782,858,060 1,713,040,901 69,817,159
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 10 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
412 TABLE 5-OPERATION&MAINTENANCE EXPENSES
413 STEAM POWER GENERATION
414 OPERATION
415 500/SUPERVISION&ENGINEERING D10 681,294 654,881 26,413
416 501/FUEL E10 125,801,910 120,605,636 5,196,274
417 502/STEAM EXPENSES
418 LABOR D10 2,042,152 1,962,981 79,171
419 OTHER E10 2,719,500 2,607,171 112,330
420 TOTAL ACCOUNT 502 4,761,653 4,570,152 191,500
421 505/ELECTRIC EXPENSES
422 LABOR D10 979,344 941,376 37,967
423 OTHER E10 773,205 741,267 31,937
424 TOTAL ACCOUNT 505 1,752,549 1,682,644 69,905
425 506/MISCELLANEOUS EXPENSES D10 1,273,279 1,223,916 49,363
426 507/RENTS L 122 0 0 0
427 STEAM OPERATION EXPENSES 134,270,683 128,737,229 5,533,455
428
429 MAINTENANCE
430 510/SUPERVISION&ENGINEERING D10 0 0 0
431 511 /STRUCTURES D10 355,731 341,940 13,791
432 512/BOILER PLANT
433 LABOR D10 3,338,587 3,209,156 129,431
434 OTHER E10 (1,431,714) (1,372,576) (59,137)
435 TOTAL ACCOUNT 512 1,906,873 1,836,579 70,294
436 513/ELECTRIC PLANT
437 LABOR D10 1,472,428 1,415,345 57,084
438 OTHER E10 (1,557,093) (1,492,777) (64,316)
439 TOTAL ACCOUNT 513 (84,665) (77,432) (7,233)
440 514/MISCELLANEOUS STEAM PLANT D10 156,804 150,725 6,079
441 STEAM MAINTENANCE EXPENSES 2,334,743 2,251,812 82,932
442 TOTAL STEAM GENERATION EXPENSES 136,605,427 130,989,040 5,616,386
443
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 11 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
444 TABLE 5-OPERATION&MAINTENANCE EXPENSES
445 HYDRAULIC POWER GENERATION
446 OPERATION
447 535/SUPERVISION&ENGINEERING L 920 6,450,955 6,200,080 250,874
448 536/WATER FOR POWER
449 WATER FOR POWER/WCLOUD SEEDING D10 4,069,597 3,911,826 157,771
450 WATER LEASE D10 0 0 0
451 536 TOTAL ACCOUNT 536 4,069,597 3,911,826 157,771
452 537/HYDRAULIC EXPENSES D10 21,617,229 20,779,167 838,063
453 538/ELECTRIC EXPENSES
454 LABOR D10 1,850,357 1,778,622 71,735
455 OTHER E10 553,965 531,083 22,882
456 TOTAL ACCOUNT 538 2,404,322 2,309,706 94,617
457 539/MISCELLANEOUS EXPENSES D10 6,807,152 6,543,250 263,902
458 540/RENTS D10 319,089 306,718 12,371
459 HYDRAULIC OPERATION EXPENSES 41,668,344 40,050,747 1,617,597
460
461 MAINTENANCE
462 541/SUPERVISION&ENGINEERING L 931 187,230 179,971 7,259
463 542/STRUCTURES D10 1,185,898 1,139,923 45,975
464 543/RESERVOIRS,DAMS&WATERWAYS D10 1,742,192 1,674,651 67,542
465 544/ELECTRIC PLANT
466 LABOR D10 2,436,943 2,342,467 94,476
467 OTHER E10 1,468,210 1,407,565 60,645
468 TOTAL ACCOUNT 544 3,905,152 3,750,031 155,121
469 545/MISCELLANEOUS HYDRAULIC PLANT L 123 5,291,722 5,086,571 205,151
470 HYDRAULIC MAINTENANCE EXPENSES 12,312,194 11,831,147 481,047
471 TOTAL HYDRAULIC GENERATION EXPENSES 53,980,538 51,881,894 2,098,644
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 12 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
472 TABLE 5-OPERATION&MAINTENANCE EXPENSES
473 OTHER POWER GENERATION
474 OPERATION
475 5461 SUPERVISION&ENGINEERING L 944 622,294 598,169 24,125
476 547 I FUEL
477 DIESEL FUEL E10 11,926 11,433 493
478 OTHER E10 77,935,055 74,715,931 3,219,124
479 TOTAL ACCOUNT 547 77,946,980 74,727,364 3,219,616
480 548/GENERATING EXPENSES
481 LABOR D10 4,078,291 3,920,183 158,108
482 OTHER E10 2,362,117 2,264,549 97,568
483 TOTAL ACCOUNT 548 6,440,408 6,184,732 255,676
484 5491 MISCELLANEOUS EXPENSES D10 753,468 724,257 29,211
485 550IRENTS D10 0 0 0
486 OTHER POWER OPER EXPENSES 85,763,150 82,234,522 3,528,628
487
488 MAINTENANCE
489 551 I SUPERVISION&ENGINEERING L 954 0 0 0
490 5521 STRUCTURES D10 104,525 100,473 4,052
491 553/GENERATING&ELECTRIC PLANT
492 LABOR D10 66,399 63,825 2,574
493 OTHER E10 46,402 44,486 1,917
494 TOTAL ACCOUNT 553 112,802 108,311 4,491
495 554/MISCELLANEOUS EXPENSES L 125 3,248,478 3,122,540 125,938
496 OTHER POWER MAINT EXPENSES 3,465,804 3,331,323 134,481
497 TOTAL OTHER POWER GENERATION EXP 89,228,954 85,565,845 3,663,109
498
499 OTHER POWER SUPPLY EXPENSE
500 555.0/PURCHASED POWER
501 POWER EXPENSE E10 161,407,785 154,740,803 6,666,982
502 OTHER CIDA 0 0 0
503 TRANSMISSION LOSSES E10 0 0 0
504 DEMAND RESPONSE INCENTIVE CIDA 9,342,758 9,342,758 0
505 TOTAL 555.0/PURCHASED POWER 170,750,544 164,083,561 6,666,982
506 555.1/COGENERATION&SMALL POWER PROD E10 226,719,444 217,354,750 9,364,694
507 555/TOTAL 397,469,988 381,438,312 16,031,676
508 556/LOAD CONTROL&DISPATCHING EXPENSES D10 87 84 3
509 557/OTHER EXPENSES
510 PCA/EPC ACCOUNTS CIDA 0 0 0
511 OREGON POWER COST-RELATED EXPENSES CODA 0 0 0
512 OTHER D10 7,714,319 7,415,248 299,071
513 BRIDGER GAAP ADJ D10 0 0 0
514 557/TOTAL 7,714,319 7,415,248 299,071
515 TOTAL OTHER POWER SUPPLY EXPENSES 405,184,395 388,853,644 16,330,750
516
517 TOTAL PRODUCTION EXPENSES 684,999,313 657,290,424 27,708,890
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 13 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
518 TABLE 5-OPERATION&MAINTENANCE EXPENSES
519 TRANSMISSION EXPENSES
520 OPERATION
521 560/SUPERVISION&ENGINEERING L 158 2,903,623 2,791,965 111,658
522 561/LOAD DISPATCHING D12 5,252,786 5,051,092 201,695
523 562/STATION EXPENSES L 140 2,682,017 2,578,863 103,154
524 563/OVERHEAD LINE EXPENSES L 144+148+152 1,274,815 1,225,784 49,031
525 565/TRANSMISSION OF ELECTRICITY BY OTHERS E10 12,961,923 12,426,528 535,395
526 566/MISCELLANEOUS EXPENSES L 158 0 0 0
527 567/RENTS L 158 4,528,250 4,354,117 174,133
528 TOTAL TRANSMISSION OPERATION 29,603,414 28,428,348 1,175,066
529
530 MAINTENANCE
531 568/SUPERVISION&ENGINEERING L 158 482,128 463,588 18,540
532 569/STRUCTURES L 136 1,765,103 1,697,319 67,784
533 570/STATION EQUIPMENT L 140 3,314,074 3,186,610 127,464
534 571/OVERHEAD LINES L 144+148+152 9,052,829 8,704,645 348,185
535 573/MISCELLANEOUS PLANT L 158 790 759 30
536 TOTAL TRANSMISSION MAINTENANCE 14,614,924 14,052,921 562,004
537
538 TOTAL TRANSMISSION EXPENSES 44,218,338 42,481,269 1,737,070
539
540 REGIONAL MARKET EXPENSES
541 OPERATION
542 575/OPER TRANS MKT ADMIN-EIM L 158 552,732 531,477 21,255
543
544 TOTAL REGIONAL MARKET EXPENSES 552,732 531,477 21,255
545
546 ENERGY STORAGE EXPENSES
547 OPERATION
548 577/ENERGY STORAGE OPERATION L 190 21,546,000 20,710,699 835,301
549 TOTAL ENERGY STORAGE OPERATION EXPENSES 21,546,000 20,710,699 835,301
550 MAINTENANCE
551 578/ENERGY STORAGE MAINTENANCE L 190 1,870,920 1,798,388 72,532
552 TOTAL ENERGY STORAGE MAINTENANCE EXPENSES 1,870,920 1,798,388 72,532
553
554 TOTAL ENERGY STORAGE EXPENSES 23,416,920 22,509,086 907,834
555
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 14 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
556 TABLE 5-OPERATION&MAINTENANCE EXPENSES
557 DISTRIBUTION EXPENSES
558 OPERATION
559 5801 SUPERVISION&ENGINEERING L 187 5,143,587 4,896,243 247,345
560 581/LOAD DISPATCHING D60 6,249,726 6,027,170 222,557
561 582/STATION EXPENSES L 172 2,006,627 1,920,714 85,912
562 583/OVERHEAD LINE EXPENSES L 177+178 6,934,882 6,409,489 525,393
563 584/UNDERGROUND LINE EXPENSES L 179+180 6,084,237 5,978,216 106,022
564 585 I STREET LIGHTING&SIGNAL SYSTEMS L 185 197 186 11
565 5861 METER EXPENSES L 183 7,108,128 6,891,692 216,435
566 5871 CUSTOMER INSTALLATIONS EXPENSE L 184 1,308,150 1,218,238 89,912
567 588/MISCELLANEOUS EXPENSES L 187 4,521,305 4,303,885 217,420
568 589/RENTS L 187 403,629 384,220 19,410
569 TOTAL DISTRIBUTION OPERATION 39,760,468 38,030,053 1,730,416
570
571 MAINTENANCE
572 590/SUPERVISION&ENGINEERING L 187 9,403 8,951 452
573 591/STRUCTURES L168 0 0 0
574 592/STATION EQUIPMENT L 172 5,498,353 5,262,945 235,407
575 593/OVERHEAD LINES L 177+178 52,769,770 48,771,887 3,997,883
576 594/UNDERGROUND LINES L 179+180 1,001,604 984,151 17,454
577 595/LINE TRANSFORMERS L 181 60,953 57,637 3,316
578 596/STREET LIGHTING&SIGNAL SYSTEMS L 185 207,087 195,540 11,547
579 597/METERS L 183 1,057,400 1,025,203 32,197
580 598/MISCELLANEOUS PLANT L 187 226,210 215,332 10,878
581 TOTAL DISTRIBUTION MAINTENANCE 60,830,780 56,521,647 4,309,133
582 TOTAL DISTRIBUTION EXPENSES 100,591,248 94,551,699 6,039,549
583
584 CUSTOMER ACCOUNTING EXPENSES
585 901/SUPERVISION L 1024 956,333 911,869 44,464
586 9021 METER READING CW902 2,151,566 1,884,799 266,767
587 903/CUSTOMER RECORDS&COLLECTIONS CW903 17,841,248 17,267,090 574,157
588 9041 UNCOLLECTIBLE ACCOUNTS CW904 4,630,705 4,304,018 326,688
589 905IMISC EXPENSES L 586+587+588 11 10 1
590 TOTAL CUSTOMER ACCOUNTING EXPENSES 25,579,863 24,367,787 1,212,076
591
592 CUSTOMER SERVICES&INFORMATION EXPENSES
593 907/SUPERVISION L 1032 1,215,070 1,192,192 22,878
594 908/CUSTOMER ASSISTANCE
595 ENERGY EFFICIENCY PROGRAMS E10 229,085 219,623 9,462
596 OTHER CUSTOMER ASSISTANCE DA908 10,156,337 9,970,253 186,084
597 TOTAL ACCOUNT 908 10,385,422 10,189,875 195,546
598 9091 INFORMATION&INSTRUCTIONAL DA909 342,954 332,225 10,729
599 9101 MISCELLANEOUS EXPENSES L 597+598 752,550 738,081 14,469
600 9121 DEMO AND SELLING EXPENSES E10 0 0 0
601 TOTAL CUST SERV&INFORMATN EXPENSES 12,695,996 12,452,372 243,623
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 15 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
602 TABLE 5-OPERATION&MAINTENANCE EXPENSES
603 ADMINISTRATIVE&GENERAL EXPENSES
604 9201 ADMINISTRATIVE&GENERAL SALARIES LABOR 95,540,868 91,575,465 3,965,403
605 921 I OFFICE SUPPLIES LABOR 18,631,647 17,858,344 773,302
606 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR LABOR (49,632,970) (47,572,964) (2,060,006)
607 9231 OUTSIDE SERVICES LABOR 10,701,666 10,257,496 444,170
608 9241 PROPERTY INSURANCE
609 PRODUCTION-STEAM D10 504,598 485,036 19,562
610 ALL RISK&MISCELLANEOUS P110P 7,492,734 7,198,283 294,450
611 TOTAL ACCOUNT 924 7,997,332 7,683,319 314,013
612 9251 INJURIES&DAMAGES LABOR 18,835,065 18,053,319 781,745
613 9261 EMPLOYEE PENSIONS&BENEFITS LABOR 50,465,419 48,370,863 2,094,556
614 EMPLOYEE PENSIONS&BENEFITS-OREGON CODA 542,861 0 542,861
615 EMPLOYEE PENSIONS&BENEFITS-IDAHO CIDA 35,182,378 35,182,378 0
616 EMPLOYEE PENSIONS&BENEFITS-CAPITALIZED OREGON CODA 0 0 0
617 9271 FRANCHISE REQUIREMENTS CIDA 0 0 0
618 928/REGULATORY COMMISSION EXPENSES
619 928.101/FERC ADMIN ASSESS&SECURITIES
620 CAPACITY RELATED D11 3,191,111 3,068,580 122,531
621 ENERGY RELATED E10 1,299,039 1,245,382 53,657
622 FERC RATE CASE E99 0 0 0
623 FERC ORDER472 D11 1,078,140 1,036,742 41,398
624 FERC OTHER D11 256,196 246,359 9,837
625 FERC-OREGON HYDRO FEE D11 445,502 428,396 17,106
626 REGULATORY COMMISSION EXPENSE-SYSTEM OTHER D11 39,605 38,084 1,521
627 IDAHO PUC -RATE CASE CIDA 0 0 0
628 -OTHER CIDA 147,559 147,559 0
629 OREGON PUC-RATE CASE CODA 0 0 0
630 -OTHER CODA 226,630 0 226,630
631 TOTAL ACCOUNT 928 6,683,782 6,211,101 472,681
632 929/DUPLICATE CHARGES LABOR 0 0 0
633 930.1/GENERAL ADVERTISING LABOR 0 0 0
634 930.2/MISCELLANEOUS EXPENSES LABOR 4,228,482 4,052,980 175,502
635 931/RENTS L 204 0 0 0
636 TOTAL ADM&GEN OPERATION 199,176,528 191,672,301 7,504,228
637 PLUS:
638 935/GENERAL PLANT MAINTENANCE L 204 7,648,415 7,325,956 322,459
639 416/MERCHANDISING EXPENSE D60 5,547,045 5,349,511 197,534
640 TOTAL OPER&MAINT EXPENSES 1,104,426,399 1,058,531,882 45,894,517
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 16 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
641 TABLE 6-DEPRECIATION&AMORTIZATION EXPENSE
642
643 DEPRECIATION EXPENSE
644 310-316/STEAM PRODUCTION L 122 11,671,316 11,218,839 452,477
645 330-336/HYDRAULIC PRODUCTION L 123 28,635,423 27,525,277 1,110,146
646 340-346/OTHER PROD UCTI ON-BASE LOAD L 124 12,272,287 11,796,512 475,775
647 340-346/OTHER PROD UCTION-PEAKERS L 125 7,996,454 7,686,446 310,009
648 TOTAL PRODUCTION PLANT 60,575,481 58,227,075 2,348,407
649
650 TRANSMISSION PLANT
651 350/LAND&LAND RIGHTS L 132 503,605 484,268 19,337
652 352/STRUCTURES&IMPROVEMENTS L 136 2,492,714 2,396,988 95,726
653 353/STATION EQUIPMENT L 140 11,813,553 11,359,186 454,366
654 354/TOWERS&FIXTURES L 144 3,259,280 3,134,132 125,149
655 355/POLES&FIXTURES L 148 7,343,470 7,060,675 282,796
656 356/OVERHEAD CONDUCTORS&DEVICES L 152 4,854,348 4,667,593 186,754
657 359/ROADS&TRAILS L 156 2,845 2,736 109
658 TOTAL TRANSMISSION PLANT 30,269,816 29,105,578 1,164,238
659
660 DISTRIBUTION PLANT
661 360/LAND&LAND RIGHTS L 164 29,090 27,999 1,091
662 361/STRUCTURES&IMPROVEMENTS L 168 1,614,289 1,548,513 65,776
663 362/STATION EQUIPMENT L 172 7,431,539 7,113,364 318,175
664 363/STORAGE BATTERY EQUIPMENT L 174 0 0 0
665 364/POLES,TOWERS&FIXTURES L 177 7,704,073 7,067,969 636,104
666 365/OVERHEAD CONDUCTORS&DEVICES L 178 4,096,334 3,845,402 250,931
667 366/UNDERGROUND CONDUIT L 179 1,537,936 1,506,734 31,202
668 367/UNDERGROUND CONDUCTORS&DEVICES L 180 9,090,268 8,936,097 154,172
669 368/LINE TRANSFORMERS L 181 16,789,509 15,876,196 913,313
670 369/SERVICES L 182 1,263,425 1,212,271 51,154
671 370/METERS L 183 6,607,639 6,406,443 201,196
672 371/INSTALLATIONS ON CUSTOMER PREMISES L 184 233,072 217,052 16,019
673 373/STREET LIGHTING SYSTEMS L 185 230,327 217,484 12,843
674 TOTAL DISTRIBUTION PLANT 56,627,499 53,975,524 2,651,976
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 17 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
675 TABLE 6-DEPRECIATION&AMORTIZATION EXPENSE
676
677 ENERGY STORAGE PLANT
678 387/ENERGY STORAGE PLANT L 190 25,696,132 24,699,937 996,195
679 TOTAL ENERGY STORAGE PLANT EXPENSE 25,696,132 24,699,937 996,195
680
681 GENERAL PLANT
682 389/LAND&LAND RIGHTS L 193 0 0 0
683 390/STRUCTURES&IMPROVEMENTS L 194 4,215,703 4,037,968 177,735
684 391/OFFICE FURNITURE&EQUIPMENT L 195 7,148,369 6,846,992 301,377
685 392/TRANSPORTATION EQUIPMENT L 196 72,444 69,390 3,054
686 393/STORES EQUIPMENT L 197 433,576 415,297 18,280
687 394/TOOLS,SHOP&GARAGE EQUIPMENT L 198 890,574 853,027 37,547
688 395/LABORATORY EQUIPMENT L 199 888,405 850,949 37,455
689 396/POWER OPERATED EQUIPMENT L 200 0 0 0
690 397/COMMUNICATIONS EQUIPMENT L 201 5,859,117 5,612,095 247,022
691 398/MISCELLANEOUS EQUIPMENT L 202 863,500 827,095 36,405
692 TOTAL GENERAL PLANT 20,371,688 19,512,812 858,876
693
694 TOTAL DEPRECIATION EXPENSE 193,540,616 185,520,925 8,019,691
695
696 DEPRECIATION ON DISALLOWED COSTS L 119 (296,299) (284,206) (12,093)
697 TOTAL DEPRECIATION EXPENSE 193,244,317 185,236,719 8,007,598
698
699 AMORTIZATION EXPENSE
700 302/FRANCHISES AND CONSENTS L 116 1,749,265 1,681,449 67,816
701 303/MISCELLANEOUS INTANGIBLE PLANT L 117 8,268,272 7,919,680 348,593
702 ADJUSTMENTS,GAINS&LOSSES L 119 15,018 14,405 613
703 TOTAL AMORTIZATION EXPENSE 10,032,555 9,615,533 417,022
704
705 TOTAL DEPRECIATION&AMORTIZATION EXP 203,276,872 194,852,252 8,424,619
706
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 18 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
707 TABLE 7-TAXES OTHER THAN INCOME TAXES
708
709 TAXES OTHER THAN INCOME
710 FEDERAL TAXES
711 FICA LABOR 21,673,544 20,773,989 899,556
712 FUTA LABOR 95,933 91,951 3,982
713 LESS PAYROLL DEDUCTION LABOR (22,219,620) (21,297,399) (922,220)
714
715 STATE TAXES
716 AD VALOREM TAXES
717 JIM BRIDGER STATION L 122 1,184,615 1,138,689 45,925
718 VALMY L 122 412,477 396,486 15,991
719 OTHER-PRODUCTION PLANT L 127 1,520,267 1,461,329 58,938
720 OTHER-TRANSMISSION PLANT L 158 2,183,203 2,099,248 83,955
721 OTHER-DISTRIBUTION PLANT L 187 1,774,801 1,689,454 85,347
722 OTHER-GENERAL PLANT L 204 38,360 36,743 1,617
723 SUB-TOTAL 7,113,723 6,821,950 291,773
724
725 IDAHO OTHER ASSESSMENTS CIDA 203,245 203,245 0
726
727 LICENSES-HYDRO PROJECTS L 123 3,885 3,735 151
728
729 REGULATORY COMMISSION FEES
730 STATE OF IDAHO CIDA 3,416,474 3,416,474 0
731 STATE OF OREGON CODA 402,744 0 402,744
732
733 FRANCHISE TAXES
734 STATE OF OREGON CODA 967,856 0 967,856
735
736 OTHER STATE TAXES
737 UNEMPLOYMENTTAXES LABOR 450,143 431,460 18,683
738 KILOWATT-HOUR TAX-IDAHO E10 2,010,490 1,927,446 83,044
739 NEVADA STATE COMMERCE TAX E10 3,778 3,622 156
740
741 TOTAL TAXES OTHER THAN INCOME 14,122,195 12,376,472 1,745,723
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 19 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
742 TABLE 8-REGULATORY DEBITS&CREDITS
743 REGULATORY DEBITS/CREDITS
744 STATE OF IDAHO CIDA 15,655,686 15,655,686 0
745 STATE OF OREGON CODA 327,353 0 327,353
746
747 TOTAL REGULATORY DEBITS/CREDITS 15,983,039 15,655,686 327,353
748
749
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 20 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
750 TABLE 9-INCOME TAXES
751
752 410/411 NET PROVISION FOR DEFERRED INCOME TAXES
753 ACCOUNT#282-RELATED P101 P (21,045,277) (20,158,002) (887,275)
754 ACCOUNTS#190&#283-RELATED L 781 6,628,717 6,428,761 199,956
755 TOTAL NET PROVISION FOR DEFERRED INCOME TAXES (14,416,560) (13,729,241) (687,319)
756
757 411.4-INVESTMENT TAX CREDIT ADJUSTMENT P101 P 50,890,271 48,744,722 2,145,549
758
759 SUMMARY OF INCOME TAXES
760
761 TOTAL FEDERAL INCOME TAX 31,085,507 30,802,383 283,124
762
763 STATE INCOME TAX
764 STATE OF IDAHO (6,860,553) (6,328,359) (532,194)
765 STATE OF OREGON 942,424 918,199 24,225
766 OTHER STATES 326,126 317,546 8,580
767 TOTAL STATE INCOME TAXES (5,592,003) (5,092,615) (499,389)
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 21 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
768 TABLE 10-CALCULATION OF FEDERAL INCOME TAX
769 OPERATING REVENUES 1,782,858,060 1,713,040,901 69,817,159
770
771 OPERATING EXPENSES
772 OPERATION&MAINTENANCE 1,104,426,399 1,058,531,882 45,894,517
773 DEPRECIATION EXPENSE 193,244,317 185,236,719 8,007,598
774 AMORTIZATION OF LIMITED TERM PLANT 10,032,555 9,615,533 417,022
775 TAXES OTHER THAN INCOME 14,122,195 12,376,472 1,745,723
776 REGULATORY DEBITS/CREDITS 15,983,039 15,655,686 327,353
777 TOTAL OPERATING EXPENSES 1,337,808,505 1,281,416,292 56,392,213
778
779 BOOK-TAX ADJUSTMENT L 777 0 0 0
780
781 INCOME BEFORE TAX ADJUSTMENTS(NOI Before Interest) 445,049,555 431,624,609 13,424,946
782
783 INCOME STATEMENT ADJUSTMENTS
784 INTEREST EXPENSE SYNCHRONIZATION L 365 167,083,342 159,990,390 7,092,952
785
786 NET OPERATING INCOME BEFORE TAXES 277,966,213 271,634,219 6,331,994
787
788 TOTAL STATE INCOME TAXES(ALLOWED) (5,592,003) (5,092,615) (499,389)
789
790 NET FEDERAL INCOME AFTER STATE INCOME TAXES 283,558,217 276,726,834 6,831,383
791
792 FEDERAL TAX AT 21 PERCENT @ 21% 59,547,226 58,112,635 1,434,590
793 OTHER CURRENT TAX ADJUSTMENTS L 792 0 0 0
794 PRIOR YEAR TAX ADJUSTMENT L 792 0 0 0
795
796 TOTAL FEDERAL INCOME TAX BEFORE OTHER ADJUSTMENTS 59,547,226 58,112,635 1,434,590
797
798 OTHER TAX ADJUSTMENTS
799 ALLOWANCE FOR AFUDC P101P 0 0 0
800 FEDERAL INCOME TAX ADJUSTMENTS-PLANT P101 P 52,288,223 50,083,736 2,204,487
801 FEDERAL INCOME TAX ADJUSTMENTS-OTHER L 781 (19,248,789) (18,668,148) (580,641)
802 SUM OF OTHER ADJUSTMENTS 33,039,434 31,415,588 1,623,846
803 FEDERAL TAX ON OTHER TAX ADJ AT 21 PERCENT @ 21% 6,938,281 6,597,274 341,008
804 FEDERAL GENERAL BUSINESS CREDITS P101 P 35,400,000 33,907,526 1,492,474
805
806 TOTAL FEDERAL INCOME TAX 31,085,507 30,802,383 283,124
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 22 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
807 TABLE 11-OREGON STATE INCOME TAX
808
809 NET OPERATING INCOME BEFORE TAXES-OREGON L 786 277,966,213 271,634,219 6,331,994
810
811 ALLOWANCE FOR AFUDC P101P 0 0 0
812 STATE INCOME TAX ADJUSTMENTS-PLANT P101 P 52,288,223 50,083,736 2,204,487
813 STATE INCOME TAX ADJUSTMENTS-OTHER L 781 (19,248,789) (18,668,148) (580,641)
814 ADD: OTHER L 781 0 0 0
815
816 TOTAL STATE INCOME TAX ADJUSTMENTS-OREGON 33,039,434 31,415,588 1,623,846
817
818 INCOME SUBJECT TO OREGON TAX 311,005,647 303,049,807 7,955,840
819
820 IERCO TAXABLE INCOME E10 15,120,252 14,495,707 624,545
821 BONUS DEPRECIATION&OTHER OREGON ADJ P101P (11,984,650) (11,479,374) (505,276)
822 OTHER L 781 0 0 0
823
824 TOTAL STATE TAXABLE INCOME-OREGON 314,141,249 306,066,140 8,075,109
825 APPORTIONMENT FACTOR(0.045454550) @ 0.045454550 14,279,149 13,912,099 367,050
826 POST APPORTIONMENT M ITEMS L 781 0 0 0
827 TOTAL TAXABLE INCOME-OREGON 14,279,149 13,912,099 367,050
828
829 OREGON TAX AT 6.6 PERCENT @ 6.60% 942,424 918,199 24,225
830 LESS:INVESTMENT TAX CREDIT P101 P 0 0 0
831
832 STATE INCOME TAX ALLOWED-OREGON 942,424 918,199 24,225
833 ADD: OR CAT TAX L 785 0 0 0
834 PRIOR YEARS'TAX ADJUSTMENT L 785 0 0 0
835
836 STATE INCOME TAX PAID-OREGON 942,424 918,199 24,225
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 23 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
837 TABLE 12-IDAHO STATE INCOME TAX
838
839 NET OPERATING INCOME BEFORE TAXES-IDAHO L 744 277,966,213 271,634,219 6,331,994
840
841 ALLOWANCE FOR AFUDC P101 P 0 0 0
842 STATE INCOME TAX ADJUSTMENTS-PLANT P101 P 52,288,223 50,083,736 2,204,487
843 STATE INCOME TAX ADJUSTMENTS-OTHER L 781 (19,248,789) (18,668,148) (580,641)
844
845 INCOME SUBJECT TO IDAHO TAX 311,005,647 303,049,807 7,955,840
846
847 IERCO TAXABLE INCOME E10 15,120,252 14,495,707 624,545
848 BONUS DEPRECIATION ADJUSTMENT P101P (31,903,621) (30,558,555) (1,345,066)
849 OTHER L 781 0 0 0
850 TOTAL STATE TAXABLE INCOME-IDAHO 294,222,278 286,986,959 7,235,319
851 APPORTIONMENT FACTOR(.886792) @ 0.88679245 260,914,095 254,497,869 6,416,227
852 POST APPORTIONMENT SCHEDULE M L 781 0 0 0
853 TOTAL TAXABLE INCOME-IDAHO 260,914,095 254,497,869 6,416,227
854 IDAHO TAX AT 5.3 PERCENT @ 5.30% 13,828,447 13,488,387 340,060
855 LESS:INVESTMENT TAX CREDIT P101 P 20,689,000 19,816,746 872,254
856
857 STATE INCOME TAX ALLOWED-IDAHO (6,860,553) (6,328,359) (532,194)
858 ADD: CURRENT TAX ADJUSTMENT L 854 0 0 0
859 PRIOR YEARS'TAX ADJUSTMENT 854 0 0 0
860 STATE INCOME TAX PAID-IDAHO (6,860,553) (6,328,359) (532,194)
861
862 OTHER STATE INCOME TAX
863 INCOME SUBJECT TO TAX 311,005,647 303,049,807 7,955,840
864
865 IERCO TAXABLE INCOME E10 15,120,252 14,495,707 624,545
866 BONUS DEPRECIATION ADJUSTMENT P101P 0 0 0
867 OTHER L 781 0 0 0
868 TOTAL TAXABLE INCOME-OTHER STATES 326,125,899 317,545,514 8,580,385
869 APPORTIONMENT FACTOR(1.0) 326,125,899 317,545,514 8,580,385
870 POST APPORTIONMENT SCHEDULE M L 784 0 0 0
871 TAXABLE INCOME 326,125,899 317,545,514 8,580,385
872 OTHER TAX AT 0.1 PERCENT 0.10% 326,126 317,546 8,580
873 ADD:CURRENT YEAR'S TAX DEFICIENCY L 857 0 0 0
874 PRIOR YEARS'TAX ADJUSTMENT L 857 0 0 0
875 OTHER STATES'INCOME TAX PAID 326,126 317,546 8,580
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 24 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
876 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
877 STEAM POWER GENERATION
878 OPERATION
879 500/SUPERVISION&ENGINEERING L 880-890 727,359 699,161 28,198
880 501/FUEL D10 2,759,191 2,652,222 106,969
881 502/STEAM EXPENSES
882 LABOR D10 2,042,152 1,962,981 79,171
883 OTHER D10 0 0 0
884 TOTAL ACCOUNT 502 2,042,152 1,962,981 79,171
885 505/ELECTRIC EXPENSES
886 LABOR D10 979,344 941,376 37,967
887 OTHER D10 0 0 0
888 TOTAL ACCOUNT 505 979,344 941,376 37,967
889 506/MISCELLANEOUS EXPENSES D10 3,185,521 3,062,024 123,497
890 507/RENTS D10 0 0 0
891 STEAM OPERATION EXPENSES 9,693,567 9,317,765 375,803
892
893 MAINTENANCE
894 510/SUPERVISION&ENGINEERING L 895-904 0 0 0
895 511 /STRUCTURES D10 (1,835) (1,764) (71)
896 512/BOILER PLANT
897 LABOR D10 3,338,587 3,209,156 129,431
898 OTHER D10 0 0 0
899 TOTAL ACCOUNT 512 3,338,587 3,209,156 129,431
900 513/ELECTRIC PLANT
901 LABOR D10 1,472,428 1,415,345 57,084
902 OTHER D10 0 0 0
903 TOTAL ACCOUNT 513 1,472,428 1,415,345 57,084
904 514/MISCELLANEOUS STEAM PLANT D10 2,151,572 2,068,159 83,413
905 STEAM MAINTENANCE EXPENSES 6,960,752 6,690,896 269,856
906 TOTAL STEAM GENERATION EXPENSES 16,654,320 16,008,661 645,659
907
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 25 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
908 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
909 HYDRAULIC POWER GENERATION
910 OPERATION
911 535/SUPERVISION&ENGINEERING L 912-919 4,877,607 4,687,920 189,688
912 536/WATER FOR POWER E10 691,962 663,380 28,582
913 537/HYDRAULIC EXPENSES D10 7,716,043 7,416,905 299,138
914 538/ELECTRIC EXPENSES
915 LABOR D10 1,762,303 1,693,982 68,321
916 OTHER D10 0 0 0
917 TOTAL ACCOUNT 538 1,762,303 1,693,982 68,321
918 539/MISCELLANEOUS EXPENSES D10 4,313,693 4,146,459 167,234
919 540/RENTS D10 0 0 0
920 HYDRAULIC OPERATION EXPENSES 19,361,608 18,608,646 752,963
921
922 MAINTENANCE
923 541/SUPERVISION&ENGINEERING L 924-930 154,757 148,758 6,000
924 542/STRUCTURES D10 676,032 649,824 26,209
925 543/RESERVOIRS,DAMS&WATERWAYS D10 416,249 400,112 16,137
926 544/ELECTRIC PLANT
927 LABOR D10 2,318,409 2,228,528 89,881
928 OTHER D10 0 0 0
929 TOTAL ACCOUNT 544 2,318,409 2,228,528 89,881
930 545/MISCELLANEOUS HYDRAULIC PLANT D10 3,040,245 2,922,380 117,865
931 HYDRAULIC MAINTENANCE EXPENSES 6,605,693 6,349,602 256,091
932 TOTAL HYDRAULIC GENERATION EXPENSES 25,967,301 24,958,247 1,009,054
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 26 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
933 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
934 OTHER POWER GENERATION
935 OPERATION
936 5461 SUPERVISION&ENGINEERING L 937-943 528,253 507,773 20,479
937 5471 FUEL E10 0 0 0
938 5481 GENERATING EXPENSES
939 LABOR D10 3,885,263 3,734,638 150,625
940 OTHER D10 0 0 0
941 TOTAL ACCOUNT 548 3,885,263 3,734,638 150,625
942 5491 MISCELLANEOUS EXPENSES D10 501,221 481,789 19,431
943 550IRENTS D10 0 0 0
944 OTHER POWER OPER EXPENSES 4,914,736 4,724,201 190,536
945
946 MAINTENANCE
947 551/SUPERVISION&ENGINEERING L 948-953 0 0 0
948 552/STRUCTURES D10 53,983 51,891 2,093
949 553/GENERATING&ELECTRIC PLANT
950 LABOR D10 63,357 60,901 2,456
951 OTHER D10 0 0 0
952 TOTAL ACCOUNT 553 63,357 60,901 2,456
953 554/MISCELLANEOUS EXPENSES D10 506,834 487,185 19,649
954 OTHER POWER MAINT EXPENSES 624,175 599,977 24,198
955 TOTAL OTHER POWER GENERATION EXP 5,538,912 5,324,178 214,734
956
957 OTHER POWER SUPPLY EXPENSE
958 555.0/PURCHASED POWER E10 0 0 0
959 555.1/COGENERATION&SMALL POWER PROD
960 CAPACITY RELATED D10 0 0 0
961 ENERGY RELATED E10 0 0 0
962 TOTAL 555.1/CSPP 0 0
963 555/TOTAL 0 0
964 5561 LOAD CONTROL&DISPATCHING EXPENSES D10 0 0 0
965 5571 OTHER EXPENSES D10 5,827,280 5,601,366 225,914
966 TOTAL OTHER POWER SUPPLY EXPENSES 5,827,280 5,601,366 225,914
967
968 TOTAL PRODUCTION EXPENSES 53,987,813 51,892,452 2,095,361
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 27 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
969 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
970 TRANSMISSION EXPENSES
971 OPERATION
972 560/SUPERVISION&ENGINEERING L 158 2,064,077 1,984,703 79,374
973 561/LOAD DISPATCHING D12 3,193,885 3,071,247 122,638
974 562/STATION EXPENSES L 140 1,873,805 1,801,736 72,069
975 563/OVERHEAD LINE EXPENSES L 144+148+152 496,615 477,514 19,101
976 565/TRANSMISSION OF ELECTRICITY BY OTHERS E10 0 0 0
977 566/MISCELLANEOUS EXPENSES L 538 70 67 3
978 567/RENTS L 158 0 0 0
979 TOTAL TRANSMISSION OPERATION 7,628,451 7,335,267 293,184
980
981 MAINTENANCE
982 568/SUPERVISION&ENGINEERING L 158 233,122 224,157 8,965
983 569/STRUCTURES L 136 1,237,220 1,189,707 47,512
984 570/STATION EQUIPMENT L 140 2,468,383 2,373,446 94,938
985 571/OVERHEAD LINES L 144+148+152 1,275,470 1,226,413 49,056
986 573/MISCELLANEOUS PLANT L 158 629 605 24
987 TOTAL TRANSMISSION MAINTENANCE 5,214,823 5,014,328 200,495
988
989 TOTAL TRANSMISSION EXPENSES 12,843,274 12,349,595 493,679
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 28 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
990 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
991 DISTRIBUTION EXPENSES
992 OPERATION
993 5801 SUPERVISION&ENGINEERING L 187 3,389,945 3,226,930 163,016
994 581/LOAD DISPATCHING D60 4,902,828 4,728,235 174,593
995 582/STATION EXPENSES L172 1,083,682 1,037,285 46,397
996 583/OVERHEAD LINE EXPENSES L 177+178 4,494,833 4,154,300 340,532
997 5841 UNDERGROUND LINE EXPENSES L 179+180 1,666,400 1,637,362 29,038
998 585 I STREET LIGHTING&SIGNAL SYSTEMS L 185 0 0 0
999 5861 METER EXPENSES L 183 5,083,662 4,928,870 154,793
1000 5871 CUSTOMER INSTALLATIONS EXPENSE L 184 950,364 885,044 65,320
1001 5881 MISCELLANEOUS EXPENSES L 582 2,806,259 2,637,770 168,489
1002 589/RENTS L 187 0 0 0
1003 TOTAL DISTRIBUTION OPERATION 24,377,974 23,235,796 1,142,178
1004
1005 MAINTENANCE
1006 590/SUPERVISION&ENGINEERING L 187 5,968 5,681 287
1007 591/STRUCTURES L168 0 0 0
1008 592/STATION EQUIPMENT L 172 3,228,672 3,090,439 138,233
1009 593/OVERHEAD LINES L 177+178 6,306,916 5,829,099 477,817
1010 594/UNDERGROUND LINES L 179+180 321,023 315,429 5,594
1011 595/LINE TRANSFORMERS L 181 22,838 21,596 1,242
1012 596/STREET LIGHTING&SIGNAL SYSTEMS L 185 84,070 79,382 4,688
1013 597/METERS L 183 804,362 779,870 24,492
1014 598/MISCELLANEOUS PLANT L 187 126,474 120,392 6,082
1015 TOTAL DISTRIBUTION MAINTENANCE 10,900,323 10,241,888 658,435
1016 TOTAL DISTRIBUTION EXPENSES 35,278,296 33,477,684 1,800,613
1017
1018 CUSTOMER ACCOUNTING EXPENSES
1019 901/SUPERVISION L 1020 790,802 692,753 98,049
1020 9021 METER READING CW902 1,321,230 1,157,415 163,816
1021 9031 CUSTOMER RECORDS&COLLECTIONS CW903 11,435,155 11,067,155 368,000
1022 9041 UNCOLLECTIBLE ACCOUNTS CW904 0 0 0
1023 905IMISC EXPENSES L 1020-1022 0 0 0
1024 TOTAL CUSTOMER ACCOUNTING EXPENSES 13,547,188 12,917,323 629,865
1025
1026 CUSTOMER SERVICES&INFORMATION EXPENSES
1027 907/SUPERVISION L 1031 992,871 974,176 18,695
1028 908/CUSTOMER ASSISTANCE L 594 8,260,121 8,104,591 155,529
1029 908/ENERGY EFFICIENCY RIDER CIDA 0 0 0
1030 909/INFORMATION&INSTRUCTIONAL L 598 0 0 0
1031 910/MISCELLANEOUS EXPENSES L 1028+1030 384,003 376,772 7,230
1032 TOTAL CUST SERV&INFORMATN EXPENSES 9,636,994 9,455,540 181,454
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 29 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1033 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
1034 ADMINISTRATIVE&GENERAL EXPENSES
1035 920/ADMINISTRATIVE&GENERAL SALARIES PTDCAS 62,498,391 59,904,065 2,594,326
1036 921/OFFICE SUPPLIES PTDCAS 435,005 416,948 18,057
1037 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR SUBEX 0 0 0
1038 923/OUTSIDE SERVICES PTDCAS 0 0 0
1039 924/PROPERTY INSURANCE 0
1040 PRODUCTION-STEAM L 122 0 0 0
1041 ALL RISK&MISCELLANEOUS P110P 469,600 451,146 18,454
1042
1043 925/INJURIES&DAMAGES LABOR 164,102 157,291 6,811
1044 926/EMPLOYEE PENSIONS&BENEFITS LABOR 0 0 0
1045 927/FRANCHISE REQUIREMENTS CIDA 0 0 0
1046 928/REGULATORY COMMISSION EXPENSES
1047 928.101/FERC ADMIN ASSESS&SECURITIES
1048 CAPACITY RELATED D10 0 0 0
1049 ENERGY RELATED E10 0 0 0
1050 928.101/FERC ORDER 472 E99 0 0 0
1051 928.101/FERC MISCELLANIOUS L RESREV 0 0 0
1052 928.102 FERC RATE CASE RESREV 0 0 0
1053 928.104/FERC OREGON HYDRO RESREV 0 0 0
1054 SEC EXPENSES L206 0 0 0
1055 928.202/IDAHO PUC -RATE CASE CIDA 0 0 0
1056 928.203/IDAHO PUC-OTHER CIDA 0 0 0
1057 928.301/OREGON PUC-FILING FEES CODA 0 0 0
1058 928.302/OREGON PUC-RATE CASE CODA 0 0 0
1059 928.303/OREGON PUC-OTHER CODA 0 0 0
1060 IPC/PUC JSS TRUE-UP ADJ PTD 0 0 0
1061 TOTAL ACCOUNT 928 0 0
1062 929/DUPLICATE CHARGES SUBEX 0 0 0
1063 930.1/GENERAL ADVERTISING RELAB 0 0 0
1064 930.2/MISCELLANEOUS EXPENSES PTDCAS 161,675 154,964 6,711
1065 931/RENTS L 204 0 0 0
1066 TOTAL ADM&GEN OPERATION 63,728,773 61,084,414 2,644,360
1067 PLUS:
1068 935/GENERAL PLANT MAINTENANCE P3908 1,333,128 1,276,923 56,205
1069 416/MERCHANDISING EXPENSE E10 0 0 0
1070 TOTAL OPER&MAINT EXPENSES 190,355,467 182,453,930 7,901,537
1071 TOTAL LABOR-RATIO(%) 100.00% 95.85% 4.15%
1072
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 30 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1073 TABLE 14-ALLOCATION FACTORS
1074
1075 CAPACITY RELATED KW
1076 COINCIDENT NET PEAK DEMAND @ GEN LEVEL D10 2,717,135 2,611,797 105,339
1077 COINCIDENT SYSTEM PEAK DEMAND @ GENERATION LEVEL D11 2,726,532 2,621,840 104,692
1078 RETAIL TRANSMISSION SERVICE @ GENERATION LEVEL-Not Used D12 2,726,532 2,621,840 104,692
1079 DISTRIBUTION SERVICE @ GENERATION LEVEL D60 2,582,310 2,490,352 91,958
1080
1081 ENERGY RELATED MWH
1082 GENERATION LEVEL(PSP) E10 17,461,292 16,740,050 721,242
1083 CUSTOMER LEVEL E99 16,375,445 15,695,718 679,726
1084
1085 CUSTOMER RELATED FACTORS
1086 902-CUSTOMER WEIGHTED CW902 2,086,325 1,827,647 258,678
1087 903-CUSTOMER WEIGHTED CW903 17,311,834 16,754,714 557,120
1088 904-CUSTOMER WEIGHTED CW904 4,283,715 3,981,507 302,208
1089 909-DIRECT ASSIGN-AVG.NO.CUST. DA909 640,460 620,424 20,036
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 31 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DECEMBER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1090 TABLE 14-ALLOCATION FACTORS
1091
1092 DIRECT ASSIGNMENTS (red font denotes allocator comes from Plant Book)
1093 252-CUSTOMER ADVANCES DA252 49,466,595 49,428,296 38,299
1094 350-LAND&LAND RIGHTS DA350 0 0 0
1095 352-STRUCTURES&IMPROVEMENTS DA352 658 0 658
1096 353-STATION EQUIPMENT DA353 36,494 0 36,494
1097 354-TOWERS&FIXTURES DA354 0 0 0
1098 355-POLES&FIXTURES DA355 33,842 0 33,842
1099 356-OVERHEAD CONDUCTORS&DEVICES DA356 26,495 1,189 25,306
1100 359-ROADS&TRAILS DA359 0 0 0
1101 360LAND&LAND RIGHTS ACCT360 10,353,487 9,928,395 425,091
1102 360LAND&LAND RIGHTS-CIAC ACCT360CIAC 1,071,862 1,071,584 278
1103 361-STRUCTURES&IMPROVEMENTS ACCT361 67,540,932 64,974,210 2,566,721
1104 361-STRUCTURES&IMPROVEMENTS-CIAC ACCT361CIAC 9,043,182 8,458,724 584,458
1105 362-STATION EQUIPMENT ACCT362 353,195,909 339,353,428 13,842,482
1106 362-STATION EQUIPMENT-CIAC ACCT362CIAC 51,658,911 47,977,542 3,681,370
1107 364-POLES,TOWERS&FIXTURES-NET DA364 352,535,104 323,427,260 29,107,844
1108 365-OVERHEAD CONDUCTORS&DEVICES-NET DA365 169,354,436 158,980,202 10,374,234
1109 366-UNDERGROUND CONDUIT-NET DA366 57,822,452 56,649,330 1,173,122
1110 367-UNDERGROUND CONDUCTORS&DEVICES-NET DA367 355,207,606 349,183,253 6,024,353
1111 368-LINE TRANSFORMERS DA368 801,431,707 757,835,563 43,596,144
1112 369-DIRECT ASSIGNMENT DA369 73,561,924 70,583,540 2,978,383
1113 370-METERS DA370 122,680,701 118,945,195 3,735,506
1114 371-INSTALLATIONS ON CUSTOMER PREMISES-NET DA371 5,664,038 5,274,738 389,300
1115 373-STREET LIGHTING SYSTEMS-NET DA373 6,955,201 6,567,389 387,813
1116 451-REVENUE-MISCELLANEOUS SERVICE DA451 6,791,112 6,705,409 85,703
1117 454-REVENUE-FACILITIES CHARGE DA454 11,032,793 10,583,594 449,199
1118 908-OTHER CUSTOMER ASSISTANCE DA908 9,743,116 9,564,603 178,513
1119 440-RETAIL SALES REVENUE RETREV 1,536,188,306 1,474,218,506 61,969,799
1120 447-WHOLESALE SALES REVENUE RESREV 0 0 0
1121 456-REVENUE-STANDBY SERVICE DASTNBY 1 1 0
1122 440-REVENUE OFFSET FOR PLANT ADDITIONS DAREV 1 1 0
1123 IDAHO CIDA 1 1 0
1124 OREGON CODA 1 0 1
1125 NET TO GROSS TAX MULTIPLIER DA990 1.334 1.334 1.334
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 32 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1126 TABLE 14-ALLOCATION FACTORS
1127
1128 INTERNALLY DEVELOPED ALLOCATION FACTORS
1129 PLANT-PROD,TRANS&DIST PTD 6,941,017,988 6,648,382,645 292,635,343
1130 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS PTDCAS 125,293,565 120,092,593 5,200,972
1131 PLANT-HYDRO,OTHER,TSUBS,DSUBS&GP P110P 3,629,766,119 3,487,123,147 142,642,972
1132 PLANT-GEN PLT(390,391,397&398) P3908 343,340,461 328,865,127 14,475,334
1133 PLANT-PROD,TRANS,DIST&GEN P101P 7,539,050,714 7,221,202,137 317,848,577
1134 O&M-PROD,TRANS,DIST,CUSTACCT&CSIS SUBEX 891,501,678 853,652,638 37,849,041
1135 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS RELAB 3,629,766,119 3,487,123,147 142,642,972
1136 LAB-ALL LABOR WITHOUT 925-6 "CIRC' LABOR 188,696,561 180,864,752 7,831,809
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 33 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1137 TABLE 15-ALLOCATION FACTORS-RATIOS
1138
1139 CAPACITY RELATED KW
1140 COINCIDENT NET PEAK DEMAND @ GEN LEVEL D10 100.00% 96.12% 3.88%
1141 COINCIDENT SYSTEM PEAK DEMAND @ GENERATION LEVEL D11 100.00% 96.16% 3.84%
1142 RETAIL TRANSMISSION SERVICE @ GENERATION LEVEL-Not used D12 100.00% 96.16% 3.84%
1143 DISTRIBUTION SERVICE @ GENERATION LEVEL D60 100.00% 96.44% 3.56%
1144
1145 ENERGY RELATED MWH
1146 GENERATION LEVEL(PSP) E10 100.00% 95.87% 4.13%
1147 CUSTOMER LEVEL E99 100.00% 95.85% 4.15%
1148
1149 CUSTOMER RELATED FACTORS
1150 369-DIRECT ASSIGNMENT DA369 100.00% 95.95% 4.05%
1151 370-METERS DA370 100.00% 96.96% 3.04%
1152 902-CUSTOMER WEIGHTED CW902 100.00% 87.60% 12.40%
1153 903-CUSTOMER WEIGHTED CW903 100.00% 96.78% 3.22%
1154 904-CUSTOMER WEIGHTED CW904 100.00% 92.95% 7.05%
1155 909-DIRECT ASSIGN-AVG.NO.CUST. DA909 100.00% 96.87% 3.13%
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 34 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1156 TABLE 15-ALLOCATION FACTORS-RATIOS
1157
1158 DIRECT ASSIGNMENTS
1159 252-CUSTOMER ADVANCES DA252 100.00% 99.92% 0.08%
1160 350-LAND&LAND RIGHTS DA350 #DIV/O! #DIV/O! #DIV/O!
1161 352-STRUCTURES&IMPROVEMENTS DA352 100.00% 0.00% 100.00%
1162 353-STATION EQUIPMENT DA353 100.00% 0.00% 100.00%
1163 354-TOWERS&FIXTURES DA354 #DIV/O! #DIV/O! #DIV/O!
1164 355-POLES&FIXTURES DA355 100.00% 0.00% 100.00%
1165 356-OVERHEAD CONDUCTORS&DEVICES DA356 100.00% 4.49% 95.51%
1166 359-ROADS&TRAILS DA359 #DIV/O! #DIV/O! #DIV/O!
1167 360LAND&LAND RIGHTS-DA DA360 100.00% 95.89% 4.11%
1168 360LAND&LAND RIGHTS-CIAC DA360C 100.00% 99.97% 0.03%
1169 361-STRUCTURES&IMPROVEMENTS-DA DA361 100.00% 96.20% 3.80%
1170 361-STRUCTURES&IMPROVEMENTS-CIAC DA361C 100.00% 93.54% 6.46%
1171 362-STATION EQUIPMENT-DA DA362 100.00% 96.08% 3.92%
1172 362-STATION EQUIPMENT-CIAC DA362C 100.00% 92.87% 7.13%
1173 364-POLES,TOWERS&FIXTURES-NET DA364 100.00% 91.74% 8.26%
1174 365-OVERHEAD CONDUCTORS&DEVICES-NET DA365 100.00% 93.87% 6.13%
1175 366-UNDERGROUND CONDUIT-NET DA366 100.00% 97.97% 2.03%
1176 367-UNDERGROUND CONDUCTORS&DEVICES-NET DA367 100.00% 98.30% 1.70%
1177 368-LINE TRANSFORMERS DA368 100.00% 94.56% 5.44%
1178 371-INSTALLATIONS ON CUSTOMER PREMISES-NET DA371 100.00% 93.13% 6.87%
1179 373-STREET LIGHTING SYSTEMS-NET DA373 100.00% 94.42% 5.58%
1180 451-REVENUE-MISCELLANEOUS SERVICE DA451 100.00% 98.74% 1.26%
1181 454-REVENUE-FACILITIES CHARGE DA454 100.00% 95.93% 4.07%
1182 908-OTHER CUSTOMER ASSISTANCE DA908 100.00% 98.17% 1.83%
1183 440-RETAIL SALES REVENUE RETREV 100.00% 95.97% 4.03%
1184 447-WHOLESALE SALES REVENUE RESREV #DIV/O! #DIV/O! #DIV/O!
1185 456-REVENUE-STANDBY SERVICE DASTNBY 100.00% 100.00% 0.00%
1186 440-REVENUE OFFSET FOR PLANT ADDITIONS DAREV 100.00% 100.00% 0.00%
1187 IDAHO CIDA 100.00% 100.00% 0.00%
1188 OREGON CODA 100.00% 0.00% 100.00%
1189 NET TO GROSS TAX MULTIPLIER DA990 1.334 1.334 1.334
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
Page 35 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT
2 FOR THE TEST YEAR ENDING DFCEMER 31,2025 TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1190 TABLE 15-ALLOCATION FACTORS-RATIOS
1191
1192 INTERNALLY DEVELOPED ALLOCATION FACTORS
1193 PLANT-PROD,TRANS&DIST PTD 100.00% 95.78% 4.22%
1194 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS PTDCAS 100.00% 95.85% 4.15%
1195 PLANT-HYDRO,OTHER,TSUBS,DSUBS&GP P110P 100.00% 96.07% 3.93%
1196 PLANT-GEN PLT(390,391,397&398) P3908 100.00% 95.78% 4.22%
1197 PLANT-PROD,TRANS,DIST&GEN P101P 100.00% 95.78% 4.22%
1198 O&M-PROD,TRANS,DIST,CUST ACCT&CSIS SUBEX 100.00% 95.75% 4.25%
1199 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS RELAB 100.00% 96.07% 3.93%
1200 LAB-ALL LABOR WITHOUT 925-6 "CIRC" LABOR 100.00% 95.85% 4.15%
Exhibit No.29
Case No.IPC-E-25-16
K.Noe,IPC
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