20240531Direct Matthew T. Larkin.pdf

BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION
IN THE MATTER OF THE APPLICATION )
OF IDAHO POWER COMPANY FOR ) CASE NO. IPC-E-24-07
AUTHORITY TO INCREASE RATES FOR )
ELECTRIC SERVICE TO RECOVER )
COSTS ASSOCIATED WITH )
INCREMENTAL CAPITAL INVESTMENTS )
AND CERTAIN ONGOING OPERATIONS )
AND MAINTENANCE EXPENSES . )
IDAHO POWER COMPANY
DIRECT TESTIMONY
OF
MATTHEW T . LARKIN

1 Q. Please state your name, business address, and
2 present position with Idaho Power Company ("Idaho Power" or
3 "Company") .
4 A. My name is Matthew T. Larkin. My business
5 address is 1221 West Idaho Street, Boise, Idaho 83702 . I am
6 employed by Idaho Power as the Revenue Requirement Senior
7 Manager in the Regulatory Affairs Department.
8 Q. Please describe your educational background.
9 A. I received a Bachelor of Business
10 Administration degree in Finance from the University of
11 Oregon in 2007 . In 2008, I earned a Master of Business
12 Administration degree from the University of Oregon. I have
13 also attended electric utility ratemaking courses,
14 including the Electric Rates Advanced Course, offered by
15 the Edison Electric Institute, and Estimation of
16 Electricity Marginal Costs and Application to Pricing,
17 presented by National Economic Research Associates, Inc.
18 Q. Please describe your work experience with
19 Idaho Power.
20 A. I began my employment with Idaho Power as a
21 Regulatory Analyst in January 2009 . As a Regulatory
22 Analyst, I provided support for the Company' s regulatory
23 activities, including compliance reporting, financial
24 analysis, and the development of revenue forecasts for
25 regulatory filings .
LARKIN, DI 1
Idaho Power Company

1 In January 2014, I was promoted to Senior Regulatory
2 Analyst where my responsibilities expanded to include the
3 development of complex cost-related studies and the
4 analysis of strategic regulatory issues .
5 Since becoming the Revenue Requirement Senior
6 Manager in March 2016, I have overseen the Company' s
7 regulatory activities related to revenue requirement, such
8 as power supply expense modeling, jurisdictional separation
9 studies, and Idaho Power' s Open Access Transmission Tariff
10 formula rate.
11 I . OVERVIEW
12 Q. What is the purpose of your testimony in this
13 proceeding?
14 A. The purpose of my testimony in this proceeding
15 is twofold. First, I discuss the development of the Idaho
16 Results of Operations ("ROO") discussed in the Direct
17 Testimony of Company Witness, Mr. Timothy Tatum, Vice
18 President of Regulatory Affairs . Second, I detail the
19 methodology utilized to develop the revenue increase
20 requested in this case.
21 Q. How is your testimony organized?
22 A. My testimony is divided into two sections .
23 Section II provides a detailed discussion of the
24 development of the ROO that was performed at my direction,
25 and the conclusions that can be drawn from the analysis .
LARKIN, DI 2
Idaho Power Company

1 Section III of my testimony details each component of the
2 Company' s incremental revenue request related to the update
3 of capital and labor-related operations and maintenance
4 ("O&M") expense ("O&M Labor") .
5 Q. Did you consult with Mr. Tatum regarding the
6 development of the incremental revenue request?
7 A. Yes . The methodology utilized to develop the
8 incremental revenue request as presented in my testimony is
9 a direct result of numerous discussions with Mr. Tatum. I
10 will discuss the resulting methodology in detail in Section
11 III of my testimony.
12 Q. Did Mr. Tatum direct you to exclude any 2024
13 capital projects from the Company' s request in this case?
14 A. Yes . I was directed to exclude any expected
15 2024 capital projects associated with the Jim Bridger Power
16 Plant ("Bridger") and the North Valmy Generating Station
17 ("Valmy") from the incremental 2024 revenue requirement.
18 For each of these plants, Idaho Power currently has in
19 place separate rate mechanisms that utilize balancing
20 accounts and levelized revenue collection to smooth
21 recovery over the assets' remaining lives . Because of the
22 changing nature of operations at these facilities (i .e . ,
23 changing end-of-life assumptions and/or conversion to
24 natural gas) , Idaho Power intends to make a filing before
25 the Idaho Public Utilities Commission ("Commission") in the
LARKIN, DI 3
Idaho Power Company

1 coming months to update the mechanisms for both Bridger and
2 Valmy. Consequently, the Company has excluded 2024 Bridger
3 and Valmy investments from this case.
4 II . IDAHO RESULTS OF OPERATIONS
5 Q. What is the purpose of the ROO?
6 A. As detailed in Mr. Tatum' s testimony, the
7 purpose of the ROO is to demonstrate that existing rates
8 resulting from the settlement stipulation ("2023
9 Stipulation") approved in the Company' s most recently
10 completed general rate case, Case No. IPC-E-23-11 ("2023
11 GRC") , do not result in sufficient cost recovery given
12 expectations for 2024 . The ROO demonstrates that a rate
13 adjustment is needed to appropriately capture increasing
14 costs and ensure the Company remains financially healthy
15 and able to continue providing safe, reliable electric
16 service to customers .
17 Q. Please generally describe the methodology
18 utilized to develop the ROO.
19 A. The starting point for the ROO is actual 2023
20 year-end results . The Company then applied typical
21 ratemaking adjustments, such as the normalization of
22 revenues and the removal of non-rate case items such as
23 Energy Efficiency Rider ("Rider") funded expenses and
24 revenues, to develop adjusted year-end 2023 results
25 ("Adjusted 2023 Results") . Then, to provide a consistent
LARKIN, DI 4
Idaho Power Company

1 comparison with the results of the 2023 GRC, Idaho Power
2 applied certain ratemaking adjustments as contemplated in
3 the 2023 Stipulation to align the ROO with the
4 methodological results of that case. Finally, the Company
5 layered on incremental capital and 0&M Labor expectations
6 for 2024 to determine the sufficiency of current rates .
7 Q. Are you sponsoring any exhibits to support
8 your discussion of the ROO?
9 A. Yes . I am sponsoring two exhibits related to
10 the development of the ROO. Exhibit No. 5 provides a list
11 of adjustments made at each of the three steps utilized to
12 develop the ROO: 1) Adjusted 2023 Results, 2) 2023
13 Stipulation Adjustments, and 3) 2024 Incremental
14 Adjustments . Exhibit No. 6 contains the Excel model used to
15 calculate the ROO. Please note that Exhibit No. 6 contains
16 the summary results from the jurisdictional separation
17 study ("JSS") containing the results of this analysis; the
18 complete Excel model and supporting schedules are provided
19 as a comprehensive Excel file with formulas intact with my
20 workpapers accompanying this filing.
21 Adjusted 2023 Results
22 Q. How were the Adjusted 2023 Results developed?
23 A. To develop the Adjusted 2023 Results, Idaho
24 Power applied standard ratemaking adjustments to actual
25 year-end 2023 results .
LARKIN, DI 5
Idaho Power Company

1 Q. What standard ratemaking adjustments were
2 applied to rate base?
3 A. As further detailed in Exhibit No . 5, a number
4 of adjustments were made to rate base to reflect standard
5 Idaho ratemaking treatment . These adjustments include the
6 removal of typically non-allowable items such as
7 prepayments and non-land plant held for future use . In
8 addition, rate base associated with Bridger coal-related
9 investments and Valmy investments, including associated
10 accumulated depreciation, was removed as previously
11 discussed.
12 Q. What standard ratemaking adjustments were
13 applied to operating revenues?
14 A. Retail revenues were adjusted to reflect
15 weather normalized historical sales for 2023 including an
16 adjustment for revenues subject to the Sales Based
17 Adjustment. Federal Energy Regulatory Commission ("FERC")
18 Account 447, Sales for Resale, was set at 2013 base net
19 power supply expense ("NPSE") levels, as this was the
20 amount reflected in the Company' s base rates prior to the
21 implementation of the 2023 Stipulation effective January 1,
22 2024 . Rider revenues were removed, and Account 415 revenues
23 were added. Lastly, the Bridger and Valmy levelized revenue
24 requirement amounts were removed from retail revenues to
25 align with the corresponding removal of costs .
LARKIN, DI 6
Idaho Power Company

1 Q. What standard ratemaking adjustments were
2 applied to 0&M?
3 A. Standard expense adjustments were made that
4 reflect items typically excluded from rate proceedings in
5 Idaho, including image-related advertising, certain senior
6 management expenses, and certain purchasing card
7 transactions . In accordance with the previously described
8 treatment for Bridger and Valmy, non-fuel 0&M was removed
9 for these plants . In the same manner as Account 447, NPSE
10 accounts (501, 536, 547, 555, and 565) were all set to base
11 levels embedded in rates prior to the January 1, 2024,
12 tariff update resulting from the 2023 GRC. Rider-funded
13 expenses were removed to align with the treatment of Rider
14 revenues . Power cost deferrals were removed from Account
15 557 as these are out-of-period adjustments not reflected in
16 general rate filings . 0&M payroll was annualized and short-
17 term incentive was set to target levels for components
18 previously allowed for recovery from customers .
19 Q. What standard ratemaking adjustments were
20 applied to depreciation?
21 A. Depreciation expense was annualized for 2023
22 in accordance with the Company' s prior rate case practice .
23 Depreciation expense for Bridger coal-related investments
24 and Valmy investments was removed in accordance with the
LARKIN, DI 7
Idaho Power Company

1 treatment of other revenue requirement components related
2 to these plants .
3 Q. Were the remaining components of revenue
4 requirement adjusted in accordance with the other year-end
5 2023 adjustments you just described?
6 A. Yes . The remaining components of revenue
7 requirement, including Taxes Other Than Income Taxes and
8 Current Income Taxes, were all adjusted accordingly.
9 2023 Stipulation Adjustments
10 Q. Why did Idaho Power apply 2023 Stipulation
11 adjustments to the Adjusted 2023 Results?
12 A. As discussed previously, the intent of the ROO
13 is to evaluate if revenue through existing rates is
14 sufficient when taking into account growth in capital and
15 0&M Labor relative to the stipulated results of the 2023
16 GRC. To provide a consistent comparison between the outcome
17 of the 2023 GRC and the Company' s expectation for 2024,
18 certain adjustments were necessary to reflect ratemaking
19 treatment approved in the 2023 Stipulation.
20 Q. What items were adjusted to conform with the
21 2023 Stipulation?
22 A. To align the results of the ROO with the 2023
23 Stipulation, Idaho Power adjusted amounts related to
24 wildfire mitigation ("WM") , base NPSE, pension, Board of
25 Director ("BoD") costs, and retail revenues .
LARKIN, DI 8
Idaho Power Company

1 Q. How did Idaho Power apply the WM-related
2 provisions of the 2023 Stipulation to the Adjusted 2023
3 Results?
4 A. Idaho Power currently has in place a deferral
5 related to WM. To align with the 2023 Stipulation, Idaho
6 Power added to rate base the year-end 2023 WM deferral
7 balance. Additionally, an adjustment was made to set WM 0&M
8 at the approved levels in the 2023 GRC. Lastly, the Company
9 added the level of WM amortization expense approved through
10 the 2023 Stipulation.
11 Q. How did Idaho Power adjust base NPSE to align
12 with the 2023 Stipulation?
13 A. The 2023 Stipulation contained updated base
14 NPSE amounts for Accounts 447, 501, 536, 547, 555, and 565 .
15 Idaho Power updated the Adjusted 2023 Results to reflect
16 the new stipulated level of base NPSE.
17 Q. How did Idaho Power adjust pension
18 amortization?
19 A. Idaho Power adjusted pension amortization to
20 reflect the newly approved level contained in the 2023
21 Stipulation.
22 Q. How did Idaho Power adjust O&M for BoD costs?
23 A. In the 2023 Stipulation, Idaho Power agreed to
24 remove certain BoD-related compensation and expenses . The
LARKIN, DI 9
Idaho Power Company

1 Company removed the dollar amount associated with these
2 adjustments from 0&M.
3 Q. How did Idaho Power adjust retail revenues?
4 A. Retail rates reflecting the 2023 Stipulation
5 went into effect on January 1, 2024 . To appropriately
6 reflect this change, Idaho Power applied the newly approved
7 rates to normalized 2023 billing determinants .
8 Incremental 2024 Adjustments
9 Q. Why did Idaho Power layer on incremental 2024
10 adjustments in the final step of the R00?
11 A. The purpose of the R00 is to evaluate how well
12 the Company' s existing rates from the 2023 Stipulation
13 support its financial health in light of incremental
14 changes to capital and 0&M Labor in 2024 . Therefore, once
15 the Company adjusted year-end 2023 results for standard
16 ratemaking adjustments, then further modified these results
17 to align with the ratemaking treatment contemplated in the
18 2023 Stipulation, the final step in determining the
19 sufficiency of existing rates is to layer on increased
20 costs and revenues associated with capital and 0&M Labor in
21 2024 .
22 Q. What general methodology did Idaho Power
23 utilize to determine the incremental revenue requirement
24 related to incremental 2024 capital?
LARKIN, DI 10
Idaho Power Company

1 A. At a high level, Idaho Power estimated
2 incremental plant by comparing estimated year-end 2024
3 plant balances to amounts reflected in the 2023
4 Stipulation. Incremental accumulated depreciation and
5 amortization was set using a mid-year approach, and
6 depreciation expense was calculated by determining 12
7 months of expense based on year-end 2024 plant balances . I
8 will describe in detail the derivation of incremental
9 revenue requirement associated with 2024 capital
10 expenditures later in my testimony when I discuss the
11 calculation of the incremental revenue request in Section
12 III .
13 Q. What general methodology did Idaho Power
14 utilize to determine the incremental revenue requirement
15 related to incremental 0&M Labor?
16 A. At a high level, Idaho Power calculated
17 incremental 0&M Labor by comparing expected annualized 0&M
18 labor effective year-end 2024 to amounts reflected in the
19 2023 Stipulation. I will describe in detail the derivation
20 of incremental 0&M Labor later in my testimony when I
21 discuss the calculation of the incremental revenue request
22 in Section III .
23 Q. Was an adjustment to retail revenues necessary
24 as well?
LARKIN, DI 11
Idaho Power Company

1 A. Yes . In addition to cost growth in 2024, Idaho
2 Power expects to experience growth in retail sales as well .
3 Therefore, within the ROO an adjustment was made to reflect
4 incremental revenue collection associated with capital and
5 0&M Labor due to sales growth between the 2023 Stipulation
6 results and year-end 2024 . Similar to capital and O&M
7 Labor, I will expand on my explanation of this adjustment
8 later in my testimony.
9 ROO Results
10 Q. What are the results of the ROO after applying
11 the three sets of adjustments you just described?
12 A. After adjusting for standard ratemaking
13 treatment, aligning with the results of the 2023
14 Stipulation, and applying incremental capital and O&M
15 Labor, the results of the ROO indicate existing rates fall
16 short of revenues required to maintain the financial health
17 of Idaho Power. As shown in cell H47 of the "JSS - 2024
18 Increment" tab of Exhibit No. 6, the ROO indicates an
19 expected rate of return ("ROR") of 5 . 80 percent, which
20 reflects a return on equity ("ROE") of 6 . 7 percent . These
21 values are well below the Company' s currently authorized
22 ROR of 7 .247 percent and currently authorized ROE of 9 . 6
23 percent.
24 Q. Based on these results, is it necessary to
25 increase Idaho Power' s retail rates?
LARKIN, DI 12
Idaho Power Company

1 A. Yes . The 2024 incremental revenue request,
2 which I will discuss in detail in the next section of my
3 testimony, is justified and necessary given the results of
4 the ROO. Absent a rate increase, the expected rates of
5 return are insufficient to maintain the financial health of
6 Idaho Power as it continues to make significant levels of
7 investment in the electrical grid to ensure safe, reliable
8 service to customers .
9 III . DEVELOPMENT OF INCREMENTAL REVENUE REQUIREMENT REQUEST
10 Q. Is the development of the incremental revenue
11 requirement based on the analysis performed for the ROO?
12 A. No. The intent of the ROO is different from
13 the intent of the incremental revenue requirement
14 calculation, and therefore the underlying methodologies are
15 not the same . The intent of the ROO was to evaluate the
16 sufficiency of current rates as applied to 2024
17 expectations based on year-end 2023 results, while the
18 intent of the incremental revenue requirement request is to
19 determine the amount of incremental revenue necessary to
20 account for increases to capital and 0&M Labor between the
21 results of the 2023 Stipulation and expectations for 2024 .
22 While the two analyses share some inputs, it is important
23 to recognize that the determination of the incremental
24 revenue requirement was performed as a standalone analysis .
LARKIN, DI 13
Idaho Power Company

1 Q. What was Idaho Power' s general approach to
2 developing the incremental revenue requirement in this
3 case?
4 A. As discussed in Mr. Tatum' s testimony, the
5 Company' s revenue request reflects the revenue requirement
6 associated with incremental 2024 capital and O&M Labor
7 relative to amounts approved for recovery in the 2023
8 Stipulation. To determine the rate increase requested in
9 this case, the Company computed the revenue requirement on
10 these isolated components .
11 Determination of Incremental 2024 Capital
12 Q. How did Idaho Power determine incremental 2024
13 capital?
14 A. The starting point for incremental 2024
15 capital is year-end 2023 actual plant balances . The
16 December 31, 2023, actual plant balances were adjusted to
17 remove Bridger coal-related amounts, all Valmy plant and
18 remaining plant from the Boardman power plant ("Boardman") .
19 The Company then estimated 2024 capital closings utilizing
20 the same general method applied in the 2023 GRC (i .e . , by
21 bifurcating expected plant closings into projects above and
22 below $8 million) , then applying different methodologies to
23 each category.
24 Q. How did Idaho Power determine 2024 plant
25 closings for projects greater than $8 million?
LARKIN, DI 14
Idaho Power Company

1 A. Idaho Power estimates that eight projects over
2 $8 million will close in 2024 . For each of these projects,
3 the Company began with year-end 2023 construction work-in-
4 process ("CWIP") , then developed a forecasted close amount
5 and timing by project with the respective business unit
6 managers . Each of these eight projects is discussed in
7 detail throughout the Direct Testimonies of Company
8 Witnesses Mr. Eric Hackett and Mr. Mitch Colburn.
9 Q. How did Idaho Power determine 2024 plant
10 closings for projects less than $8 million?
11 A. For projects less than $8 million, Idaho Power
12 first calculated a five-year average of the ratio between
13 the previous year' s CWIP balance and the percent of project
14 closings in the subsequent year. This ratio was then
15 applied to the year-end 2023 CWIP balance to determine
16 estimated 2024 closings . These closings were then spread to
17 FERC accounts based on a five-year history of plant
18 closings from 2019 through 2023 .
19 Q. Do Idaho Power' s estimated 2024 plant levels
20 account for retirements?
21 A. Yes . For the majority of FERC accounts, Idaho
22 Power estimated 2024 retirements using a five-year average
23 for the time period 2019 through 2023 . Accounts 302, 303,
24 391, 393, 394, 395, 397, and 398 have known retirement
LARKIN, DI 15
Idaho Power Company

1 dates and amounts based on vintage layers and therefore
2 estimates were not necessary.
3 Q. How did Idaho Power calculate accumulated
4 depreciation related to 2024 plant balances?
5 A. Accumulated depreciation was determined based
6 on a mid-year convention. The 2024 forecast was developed
7 by first determining the actual year-end 2023 balance and
8 then building upon that to determine the 2024 monthly
9 balances . The December 31, 2023, actual accumulated
10 depreciation reserve balance was adjusted to remove Bridger
11 coal-related accumulated depreciation, and all Valmy
12 accumulated depreciation. Land does not depreciate so there
13 was no adjustment for Boardman. The mid-year average was
14 determined by adding the adjusted December 2023 balance and
15 the forecasted December 2024 balance and dividing the total
16 by two .
17 Q. How did Idaho Power calculate expected
18 depreciation expense?
19 A. To determine expected depreciation expense,
20 Idaho Power applied annual depreciation rates approved in
21 Commission Order No. 35272' to expected plant balances at
22 month-end December 2024 to determine a full year of
23 depreciation expense.
1 In the Matter of Idaho Power Company's Application for Authority to
Increase its Rates Due to Revised Depreciation Rates for Electric
Plant-In-Service, Case No. IPC-E-21-18.
LARKIN, DI 16
Idaho Power Company

1 Q. How did the Company calculate incremental
2 capital utilized in the revenue requirement computation
3 once it had calculated expected 2024 values?
4 A. Once the Company determined expected 2024
5 values, an account-by-account comparison was performed
6 relative to approved capital components from the 2023
7 Stipulation. Exhibit No. 7 presents this account-by-account
8 comparison utilized to determine the incremental revenue
9 requirement components related to 2024 plant.
10 Q. What are the results of the analysis as
11 presented in Exhibit No. 7?
12 A. The analysis presented in Exhibit No . 7 shows
13 the composition of the approximately $860 million in
14 incremental 2024 plant by FERC account. Column C contains
15 plant amounts reflected in the 2023 Stipulation, while
16 Column D provides expected 2024 plant levels calculated in
17 accordance with the methodology I just described. A
18 complete Excel file containing supporting schedules with
19 formulas intact is included in my workpapers accompanying
20 this filing.
21 Determination of Incremental 2024 O&M Labor
22 Q. What components of labor are reflected in the
23 Company' s incremental revenue request?
24 A. The incremental revenue request only includes
25 0&M Labor related to wages and salaries, including
LARKIN, DI 17
Idaho Power Company

1 benefits, loadings, and short-term incentive for non-
2 officers . All other components of labor and benefits are
3 excluded from the determination of incremental labor costs
4 in this case.
5 Q. How did Idaho Power calculate expected 2024
6 0&M Labor?
7 A. Expected 2024 0&M Labor was calculated
8 utilizing the same general methodology applied in the
9 Company' s 2023 GRC. First, the Company developed a three-
10 year history of the ratio between February year-to-date 0&M
11 Labor expenses and full year 0&M Labor expenses . This ratio
12 was then applied to month-end February 2024 year-to-date
13 0&M Labor to determine the expectation of full year 2024
14 0&M Labor expenses . An annualizing adjustment was then
15 applied based on year-end 2023 levels, and a 2025 general
16 wage adjustment ("GWA") of 3 percent was added.
17 Q. How was the 2024 expectation determined for
18 short-term incentive?
19 A. In line with prior filings, Idaho Power
20 adjusted the short-term incentive to reflect target levels
21 for just the Customer Satisfaction and Reliability
22 components for non-officers .
23 Q. How did Idaho Power determine the incremental
24 labor request based on the expectation of 2024 O&M Labor?
LARKIN, DI 18
Idaho Power Company

1 A. Expected 2024 O&M Labor amounts were compared
2 to 0&M Labor reflected in the 2023 Stipulation. To isolate
3 wages and salaries, a number of adjustments were required
4 to ensure that other components of labor expense were not
5 included in the incremental revenue requirement developed
6 in this case. This includes an adjustment to remove the
7 impact of the mid-year 2022 GWA that was excluded from
8 revenue requirement as part of the 2023 Stipulation.
9 Q. Are you sponsoring an exhibit that details the
10 comparison of 2024 0&M Labor to the stipulated results of
11 the 2023 GRC?
12 A. Yes . Exhibit No. 8 steps through the
13 determination of incremental revenue requirement related to
14 2024 0&M Labor.
15 Q. What are the results of the analysis presented
16 in Exhibit No. 8?
17 A. Exhibit No. 8 details how the system
18 incremental labor in the amount of $19, 557, 535 was
19 determined. This value can be found in cell E88 of Exhibit
20 No . 8 .
21 Determination of Incremental Revenue Requirement
22 Q. Once incremental capital and O&M Labor were
23 determined, how did Idaho Power calculate the ultimate rate
24 increase requested in this case?
LARKIN, DI 19
Idaho Power Company

1 A. Once the incremental revenue requirement
2 components were determined by FERC account, Idaho Power
3 applied the jurisdictional allocation factors from the JSS
4 from the 2023 Stipulation to determine the Idaho
5 jurisdictional portion of each revenue requirement
6 component.
7 Q. Were any other adjustments required to
8 calculate the appropriate revenue increase requested in
9 this case?
10 A. Yes . Because the rate increase requested in
11 this case is intended to update the results of the 2023 GRC
12 for two specific components of revenue requirement,
13 increased revenue collection due to sales growth between
14 the 2023 Stipulation and 2024 must be considered as well,
15 serving as an offset to the increase in costs contemplated
16 in this case.
17 Q. How did Idaho Power determine the appropriate
18 level of revenue growth to apply as an offset?
19 A. Exhibit No. 9 walks through the calculation of
20 the revenue growth offset applied in this case . First,
21 Idaho Power determined an estimated cents-per-kilowatt-hour
22 ("kWh") rate of cost recovery for capital-related items and
23 0&M Labor that is currently embedded in retail rates as a
24 result of the 2023 GRC. Then, the Company determined the
25 estimated kWh sales growth between the stipulated results
LARKIN, DI 20
Idaho Power Company

1 of the 2023 GRC and 2024 . The cents-per-kWh rate was
2 applied to the kWh sales growth to determine the estimated
3 increase in recovery related to capital and O&M Labor. As
4 shown in cell A14, the revenue growth offset applied in
5 this case is $5 . 5 million.
6 Q. What is the Company' s requested rate increase
7 after taking into account incremental capital and 0&M
8 Labor, offset by incremental revenue collection?
9 A. Exhibit No. 10 details the results of the
10 incremental revenue requirement quantification. The system
11 incremental revenue requirement by FERC account is
12 presented in Column F, while the Idaho-allocated portion is
13 presented in Column G. The revenue growth offset of $5 . 5
14 million is applied in cell G45 . As shown in cell G43, the
15 Company' s requested increase in this case is $99 . 3 million,
16 or 7 . 31 percent.
17 Q. In the 2023 Stipulation, the Commission
18 authorized Idaho Power to utilize Investment Tax Credits
19 ("ITC") to offset the revenue requirement associated with
20 battery projects expected to come online in the 2023 GRC
21 test year ("2023 Battery Projects") . Is Idaho Power
22 proposing to modify that treatment in this case?
23 A. No. Embedded in Idaho Power' s existing rates
24 is a reduction equivalent to the revenue requirement of the
25 2023 Battery Projects . The incremental revenue requirement
LARKIN, DI 21
Idaho Power Company

1 calculation in this case has no impact on this existing
2 revenue requirement reduction. In other words, the proposed
3 rates effective January 1, 2025, would maintain the
4 stipulated offset to the 2023 Battery Projects revenue
5 requirement that currently exists today.
6 IV. CONCLUSION
7 Q. Please summarize your testimony.
8 A. Idaho Power performed an ROO to determine the
9 ability of existing rates to maintain the financial health
10 of the Company as it continues to make significant
11 investment in the safe, reliable operation of the
12 electrical grid. This analysis began with year-end 2023
13 results, then applied standard ratemaking adjustments,
14 changes related to the 2023 Stipulation, and expected 2024
15 costs, ultimately demonstrating that current rates are
16 insufficient to support the Company' s operations while
17 maintaining its financial health.
18 Given the results of the ROO, the Company calculated
19 an incremental rate increase based on expected capital
20 expenditures and 0&M Labor costs in 2024, updating the
21 results of the 2023 Stipulation for these two revenue
22 requirement components . The resulting analysis determined
23 that an increase to current revenues of $99 . 3 million, or
24 7 . 31 percent, is necessary to ensure timely cost recovery
LARKIN, DI 22
Idaho Power Company

1 and provide the Company with the necessary financial
2 stability.
3 Q. Would approval of the requested rate increase
4 result in fair, just, and reasonable rates?
5 A. Yes . The Company' s proposed methodology in
6 this case would provide rate relief that is commensurate
7 with the ongoing needs of the system, appropriately
8 balancing affordability with the investment required to
9 build, operate, and maintain a safe and reliable electrical
10 grid.
11 Q. Does this conclude your direct testimony in
12 this case?
13 A. Yes, it does .
14
15
16
LARKIN, DI 23
Idaho Power Company

1 DECLARATION OF MATTHEW T. LARKIN
2 I, Matthew T . Larkin, declare under penalty of
3 perjury under the laws of the state of Idaho:
4 1 . My name is Matthew T. Larkin. I am employed
5 by Idaho Power Company as the Revenue Requirement Senior
6 Manager.
7 2 . On behalf of Idaho Power, I present this
8 pre-filed direct testimony and Exhibit Nos . 5 through 10 in
9 this matter.
10 3 . To the best of my knowledge, my pre-filed
11 direct testimony and exhibits are true and accurate .
12 I hereby declare that the above statement is true to
13 the best of my knowledge and belief, and that I understand
14 it is made for use as evidence before the Idaho Public
15 Utilities Commission and is subject to penalty for perjury.
16 SIGNED this 31st day of May 2024, at Boise, Idaho.
17
18 Signed:
19 MATTHEW T . LARKIN
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LARKIN, DI 24
Idaho Power Company

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-24-07
IDAHO POWER COMPANY
LARKIN , DI
TESTIMONY
EXHIBIT NO. 5

Exhibit No. 5
Results of Operations Adjustment Summary
Idaho Power Company — IPC-E-24-07
The following document summarizes adjustments made to year-end 2023 actuals to complete
the Idaho Results of Operations ("ROO") analysis. The adjustments are applied in three
sequential steps:
1) 2023 Ratemaking Adjustments;
2) 2023 Stipulation Adjustments; and
3) 2024 Incremental Adjustments.
The adjustments in this document correspond to the analysis results presented in Exhibit No. 6:
Results of Operations.xlsx. The complete Excel model and supporting schedules are provided
as a comprehensive Excel file with formulas intact in Mr. Larkin's workpapers accompanying
this filing. The final results of the ROO as contained in Exhibit No. 6 can be found in the
comprehensive workpaper model on the "JSS —2024 Increment" tab.' For ease of reference,
when possible, the adjustments are delineated by the corresponding table in the respective
jurisdictional separation study ("JSS") tabs (e.g., Table 1 — Electric Plant in Service).
Step 1 : 2023 Ratemakinq Adjustments
Standard ratemaking adjustments are applied to year-end 2023 results to capture typical
regulatory treatment of revenue requirement components, including the normalization of
revenues and the removal of non-rate case items such as Energy Efficiency Rider ("Rider")
expenses and revenues, to develop the Adjusted 2023 Results.
General Adjustments
• Removed Jim Bridger Power Plant ("Bridger") and North Valmy Generating Station
("Valmy") components from 2023 actuals. This flows through to each subsequent step in
the analysis.
• Added construction work-in-process ("CWIP") for Hells Canyon Complex ("HCC")
relicensing into the computation of the revenue deficiency to account for currently
authorized collection of HCC allowance-for-funds-used-during-construction.
• Set Idaho Energy Resources Company ("IERCo") operating income to the December 31,
2023 balance.
• Demand and energy jurisdictional allocations reflect normalized 2023 data.
Table 1 — Electric Plant in Service CEPIS")
• Removed Bridger Coal and Val my Plant (1 3-monthaverage).
1 Please note the "2023 Stipulation Adjustments" and the "2024 Incremental Adjustments"were applied
within the same tab of the model, therefore there is not a separate tab that isolates the results of Step 2
prior to applying the 2024 Incremental Adjustments detailed in Step 3.
Exhibit No.5
Case No. IPC-E-24-07
M.Larkin, IPC
Page 1 of 4

Table 2 —Accumulated Depreciation and Amortization
• Removed Bridger Coal and Valmy 13-month average and associated annualizing
adjustment.
• Applied annualizing adjustment that includes a reserve adjustment equal to one-half of
the depreciation expense annualizing adjustment.
Table 3— Other Rate Base Items
• Account 282: Adjusted based on adjustments to plant, as well as an adjustment for
Bridger and Valmy deferred tax to ensure the reduction flows through appropriately.
• Fuel Inventory: Adjusted to reflect required fuel inventory per general rate case ("GRC")
methodology.
• Removed prepayments.
• Adjusted Plant Held for Future Use to only reflect Land Held for Future Use.
• Added Accounts 114/115.
Table 4 — Operating Revenues
• Normalized 2023 retail revenues.
o Removed levelized Bridger and Valmy revenue requirement.
o Removed revenues subject to Sales Based Adjustment.
• Account 447 revenues set at 2013 base net power supply expense ("NPSE") levels to
match amounts reflected in 2023 retail rates/2023 normalized revenues.
• Removed Account 456: Rider revenues.
• Added Account 415.
Table 5— Operations and Maintenance Expense ("O&M")
• Typical GRC O&M deductions include general advertising expenses, certain
memberships and contributions, senior management expenses, and miscellaneous other
expenses as detailed below:
o Advertising (Account 930.1)
o Senior management expenses (Account 930.2)
o Miscellaneous expenses (Purchasing Card charges) (Account 930.2)
o Certain memberships and contributions (Account 930.2)
• Other adjustments to O&M:
o Removed Account 908: Rider Funded Expenses.
o Removed 2023 actual Bridger and Valmy O&M.
o NPSE Accounts (501, 536, 547, 555 & 565): set at 2013 base levels to match
amounts reflected in 2023 retail rates/ 2023 normalized revenues.
o Account 557: Removed Power Cost Adjustment deferrals.
o Account 920: Adjusted short-term incentive to reflect target levels for Customer
Satisfaction and Reliability.
o Added GRC payroll annualizing adjustment.
o Added Account 416.
Exhibit No.5
Case No. IPC-E-24-07
M.Larkin, IPC
Page 2 of 4

Table 6 — Depreciation/Amortization Expense
• Annualized per typical GRC methodology.
• Removed Bridger coal and Valmy depreciation expense.
• Removed 411.8.
Table 7—Taxes Other Than Income Taxes
• Removed Federal Insurance Contribution Act ("FICA"), Federal Unemployment Tax Act
("FUTA"), Payroll, and Unemployment taxes.
• Normalized Hydro Generation kilowatt-hour ("kWh") tax.
Tables 9-12 — Current Income Taxes
• Adjustments calculated on a system basis to align with other adjustments detailed
above.
• Adjusted taxes to reflect Bridger and Valmy removal.
Step 2: 2023 Stipulation Adjustments
Table 3— Other Rate Base Items
• Added Wildfire mitigation deferral year-end 2023 balance.
Table 4 — Operating Revenues
• Adjusted retail revenues to reflect January 1, 2024, rates applied to 2023 normalized
billing determinants.
o Removed levelized Bridger and Valmy revenue requirement.
• Account 447 revenues set at new 2023 base NPSE level approved in 2023 General
Rate Case, IPC-E-23-11 ("2023 GRC').
Table 5— O&M
• Adjusted Board of Directors ("BoD") costs to align with treatment from 2023 Stipulation.
• NPSE Accounts 501, 536, 547, 555, and 565 set at new base approved in 2023 GRC.
• Wildfire mitigation O&M set at new level approved in 2023 GRC.
• Idaho pension amortization set at new level approved in 2023 GRC.
Table 8— Regulatory Debits and Credits
• Added wildfire mitigation amortization as approved in 2023 GRC.
Exhibit No.5
Case No. IPC-E-24-07
M. Larkin, IPC
Page 3 of 4

Step 3: 2024 Incremental Adjustments
Table 1 — EPIS
• Added incremental 2024 plant.
Table 2 —Accumulated Depreciation and Amortization
• Added mid-year incremental Depreciation and Amortization for incremental plant.
Table 3— Other Rate Base Items
• Account 282: Adjusted to reflect ending balance for incremental plant additions.
Table 4 — Operating Revenues
• Added incremental revenue due to sales growth associated with plant and O&M labor
embedded in rates approved in the 2023 GRC.
Table 5— O&M
• Added incremental labor expenses.
Table 6— Depreciation/Amortization Expense
• Annualized depreciation expense based on year-end 2024 balances.
Tables 9-12 —Current Income Taxes
• Adjusted tax for incremental 2024 plant.
Exhibit No.5
Case No. IPC-E-24-07
M. Larkin, IPC
Page 4 of 4

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-24-07
IDAHO POWER COMPANY
LARKIN , DI
TESTIMONY
EXHIBIT NO. 6

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
9''"SUMMARY OF RESULTS'"
10
11 DEVELOPMENT OF RATE BASE COMPONENTS
12
13 ELECTRIC PLANT IN SERVICE 7,098,961,062 6,797,524,777 301,436,285
14 LESS:ACCUM PROVISION FOR DEPRECIATION 2,190,309,473 2,096,603,554 93,705,920
15 AMORT OF OTHER UTILITY PLANT 47,594,769 45,681,683 1,913,086
16 NET ELECTRIC PLANT IN SERVICE 4,861,056,819 4,655,239,540 205,817,279
17 LESS:CUSTOMER ADV FOR CONSTRUCTION 32,170,424 32,110,363 60,062
18 LESS:A000M DEFERRED INCOME TAXES 387,672,810 371,048,649 16,624,160
19 ADD:PLT HLD FOR FUTURE+ACQUIS ADJ 628,247 628,247 -
20 ADD:WORKING CAPITAL 139,484,205 133,445,511 6,038,694
21 ADD:CONSERVATION+OTHERDFRDFROG. 51,563,314 46,360,137 5,203,177
22 ADD:SUBSIDIARY RATE BASE 36,192,061 34,665,124 1,526,937
23
24 TOTAL COMBINED RATE BASE 4,669,081,412 4,467,179,547 201,901,865
25
26 RATE OF RETURN UNDER PRESENT RATES
27 OPERATING REVENUES
28 SALES REVENUES 1,312,879,048 1,257,826,285 55,052,763
29 OTHER OPERATING REVENUES 90,445,486 86,982,202 3,463,284
30 TOTAL OPERATING REVENUES 1,403,324,534 1,344,808,487 58,516,046
31 OPERATING EXPENSES
32 OPERATION&MAINTENANCE EXPENSES 934,441,471 893,018,187 41,423,284
33 DEPRECIATION EXPENSE 174,034,269 166,800,152 7,234,117
34 AMORTIZATION OF LIMITED TERM PLANT 8,949,407 8,584,623 364,784
35 ACCRETION EXPENSE 12,995 12,485 509
36 TAXES OTHER THAN INCOME 25,554,161 23,444,410 2,109,751
37 REGULATORY DEBITS/CREDITS 5,657,329 5,339,621 317,709
38 PROVISION FOR DEFERRED INCOME TAXES (15,424,032) (14,807,844) (616,189)
39 INVESTMENT TAX CREDIT ADJUSTMENT 124,171,136 118,895,080 5,276,056
40 FEDERAL INCOME TAXES (101,137,048) (97,803,208) (3,333,840)
41 STATE INCOME TAXES (10,554,538) (10,146,359) (408,178)
42 TOTAL OPERATING EXPENSES 1,145,705,150 1,093,337,148 52,368,003
43 OPERATING INCOME 257,619,383 251,471,339 6,148,044
44 ADD: IER00 OPERATING INCOME Eio 8,033,987 7,695,035 338,953
45 CONSOLIDATED OPERATING INCOME 265,653,371 259,166,374 6,486,997
46
47 RATE OF RETURN UNDER PRESENT RATES 5.69% 5.80% 3.21%
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 1 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
48*"'SUMMARY OF RESULTS***
49
50 RATE OF RETURN UNDER PRESENT RATES
51 TOTAL COMBINED RATE BASE 4,669,081,412 4,467,179,547 201,901,865
52
53 SALES REVENUES 1,312,879,048 1,257,826,285 55,052,763
54 OTHER OPERATING REVENUES 90,445,486 86,982,202 3,463,284
55 TOTAL OPERATING REVENUES 1,403,324,534 1,344,808,487 58,516,046
56 OPERATING EXPENSES
57 OPERATION&MAINTENANCE EXPENSES 934,441,471 893,018,187 41,423,284
58 DEPRECIATION EXPENSE 174,034,269 166,800,152 7,234,117
59 AMORTIZATION OF LIMITED TERM PLANT 8,949,407 8,584,623 364,784
60 ACCRETION EXPENSE 12,995 12,485 509
61 TAXES OTHER THAN INCOME 25,554,161 23,444,410 2,109,751
62 REGULATORY DEBITS/CREDITS 5,657,329 5,339,621 317,709
63 PROVISION FOR DEFERRED INCOME TAXES (15,424,032) (14,807,844) (616,189)
64 INVESTMENT TAX CREDIT ADJUSTMENT 124,171,136 118,895,080 5,276,056
65 FEDERAL INCOME TAXES (101,137,048) (97,803,208) (3,333,840)
66 STATE INCOME TAXES (10,554,538) (10,146,359) (408,178)
67 TOTAL OPERATING EXPENSES 1,145,705,150 1,093,337,148 52,368,003
68 OPERATING INCOME 257,619,383 251,471,339 6,148,044
69 ADD: IER00 OPERATING INCOME 8,033,987 7,695,035 338,953
70 CONSOLIDATED OPERATING INCOME 265,653,371 259,166,374 6,486,997
71 RATE OF RETURN UNDER PRESENT RATES 5.69% 5.80% 3.21%
72
73 DEVELOPMENT OF REVENUE REQUIREMENTS
74 RATE OF RETURN REQUIRED(BASED ON 10%ROE) 7.247% 7.247% 7.247%
75
76 RETURN AT CLAIMED RATE OF RETURN 338,368,330 323,736,502 14,631,828
77 EARNINGS DEFICIENCY 72,714,959 64,570,128 8,144,832
78 ADD:CWIP(RELICENSING) 6,815,472 6,520,122 295,350
79 DEFICIENCY WITH CWIP 79,530,431 71,090,250 8,440,182
80
81 NET-TO-GROSS TAX MULTIPLIER 1.347 1.347 1.347
82
83 REVENUE DEFICIENCY 107,127,491 95,758,566 11,368,925
84
85 FIRM JURISDICTIONAL REVENUES 1,283,843,868 1,230,016,095 53,827,773
86
87 PERCENT INCREASE REQUIRED 8.34% 7.79% 21.12%
88
89 SALES AND WHEELING REVENUES REQUIRED 1,390,971,359 1,325,774,661 65,196,698
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 2 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
90***TABLE 1-ELECTRIC PLANT IN SERVICE
91
92 INTANGIBLE PLANT
93 301-ORGANIZATION P1o1P 5,703 5,461 242
94 302-FRANCHISES&CONSENTS Dio 67,301,183 64,641,493 2,659,690
95303-MISCELLANEOUS P1o1P 77,770,770 74,466,275 3,304,495
96
97 TOTAL INTANGIBLE PLANT 145,077,656 139,113,229 5,964,428
98
99 PRODUCTION PLANT
100310-316/STEAM PRODUCTION D10 297,714,102 285,948,673 11,765,429
101330-336/HYDRAULIC PRODUCTION D10 1,211,835,338 1,163,944,550 47,890,789
102 340-346/OTHER PRODUCTION-LANGLEY D10 415,522,763 399,101,627 16,421,136
103 340-346/OTHER PRODUCTION-DANSKIN/BENNETT MTN D70 202,289,103 194,294,795 7,994,308
104
105 TOTAL PRODUCTION PLANT 2,127,361,308 2,043,289,646 84,071,662
106
107 TRANSMISSION PLANT
108 350/LAND&LAND RIGHTS
109 SYSTEM TRANSMISSION SERVICE D11 45,123,558 43,340,310 1,783,248
110 DIRECT ASSIGNMENT DA350 - - -
III TOTAL ACCOUNT350 45,123,558 43,340,310 1,783,248
112
113 352/STRUCTURES&IMPROVEMENTS
114 SYSTEM TRANSMISSION SERVICE D11 110,977,804 106,592,048 4,385,756
115 DIRECT ASSIGNMENT DA352 658 - 658
116 TOTAL ACCOUNT 352 110,978,462 106,592,048 4,386,415
117
118 353/STATION EQUIPMENT
119 SYSTEM TRANSMISSION SERVICE DII 509,721,302 489,577,513 20,143,789
120 DIRECT ASSIGNMENT DA353 111,594 75,100 36,494
121 TOTAL ACCOUNT 353 509,832,896 489,652,613 20,180,283
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 3 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
122—TABLE TABLE 1-ELECTRIC PLANT IN SERVICE"*"
123
124 3541 TOWERS&FIXTURES
125 SYSTEM TRANSMISSION SERVICE Dii 249,756,890 239,886,692 9,870,198
126 DIRECT ASSIGNMENT DA354 - - -
127 TOTAL ACCOUNT 354 249,756,890 239,886,692 9,870,198
128
129 355/POLES&FIXTURES
130 SYSTEM TRANSMISSION SERVICE oil 271,451,233 260,723,692 10,727,541
131 DIRECT ASSIGNMENT DA355 33,842 - 33,842
132 TOTAL ACCOUNT 355 271,485,075 260,723,692 10,761,383
133
134 356/OVERHEAD CONDUCTORS&DEVICES
135 SYSTEM TRANSMISSION SERVICE D11 290,260,290 278,789,429 11,470,861
136 DIRECT ASSIGNMENT DA356 26,495 1,189 25,306
137 TOTAL ACCOUNT 356 290,286,785 278,790,618 11,496,167
138
139 359/ROADS&TRAILS
140 SYSTEM TRANSMISSION SERVICE D11 406,231 390,177 16,054
141 DIRECT ASSIGNMENT DA359 - - -
142 TOTAL ACCOUNT 359 406,231 390,177 16,054
143
144 TOTAL TRANSMISSION PLANT 1,477,869,896 1,419,376,150 58,493,747
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 4 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
145***TABLE 1-ELECTRIC PLANT IN SERVICE
146
147 DISTRIBUTION PLANT
148
149 360/LAND&LAND RIGHTS ACCT360 9,815,237 9,399,050 416,188
150 361/STRUCTURES&IMPROVEMENTS ACCT361 73,809,666 70,595,724 3,213,942
151 362/STATION EQUIPMENT ACCT362 361,390,672 346,674,746 14,715,926
152363/BATTERY STORAGE D70 307,577,615 295,422,387 12,155,228
153 364/POLES,TOWERS&FIXTURES DA364 366,804,146 338,067,715 28,736,431
154365/OVERHEAD CONDUCTORS&DEVICES DA365 172,940,993 163,251,293 9,689,700
155 366/UNDERGROUND CONDUIT DA366 62,328,189 61,327,088 1,001,101
156 367/UNDERGROUND CONDUCTORS&DEVICES DA367 385,071,509 379,263,738 5,807,772
157368/LINE TRANSFORMERS ACCT368 824,478,027 779,265,187 45,212,840
158 369/SERVICES DA369 74,883,706 71,799,683 3,084,023
159 370/METERS ACCT370 124,776,385 120,955,838 3,820,547
160 371/INSTALLATIONS ON CUSTOMER PREMISES DA371 6,504,019 6,077,640 426,379
161 373/STREET LIGHTING SYSTEMS DA373 7,620,938 7,241,643 379,296
162
163 TOTAL DISTRIBUTION PLANT 2,778,001,103 2,649,341,730 128,659,372
164
165 GENERAL PLANT
166 389/LAND&LAND RIGHTS PTD 21,145,439 20,246,965 898,474
167 390/STRUCTURES&IMPROVEMENTS PTD 178,056,002 170,490,368 7,565,634
168 391/OFFICE FURNITURE&EQUIPMENT PTD 46,142,473 44,181,870 1,960,603
169 392/TRANSPORTATION EQUIPMENT PTD 149,671,758 143,312,176 6,359,582
170 393/STORES EQUIPMENT PTD 9,276,437 8,882,279 394,158
171 394/TOOLS,SHOP&GARAGE EQUIPMENT PTD 16,531,852 15,829,411 702,442
172 395/LABORATORY EQUIPMENT PTD 17,688,809 16,937,208 751,601
173 396/POWER OPERATED EQUIPMENT PTD 32,527,731 31,145,621 1,382,110
174 397/COMMUNICATIONS EQUIPMENT PTD 88,540,127 84,778,040 3,762,087
175 398/MISCELLANEOUS EQUIPMENT PTD 11,070,472 10,600,085 470,386
176
177 TOTAL GENERAL PLANT 570,651,099 546,404,023 24,247,076
178
179 TOTAL ELECTRIC PLANT IN SERVICE 7,098,961,062 6,797,524,777 301,436,285
180
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 5 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
181 ***TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION*
182
183 PRODUCTION PLANT
184 310-316/STEAM PRODUCTION L 100 192,595,403 184,984,183 7,611,220
185 330-336/HYDRAULIC PRODUCTION L101 536,257,268 515,064,799 21,192,470
186 340-346/OTHER PRODUCTION-LANGLEY L102 86,016,347 82,617,048 3,399,299
187 340-346/OTHER PRODUCTION-DANSKIN/BENNETT MTN L103 64,781,409 62,221,298 2,560,111
188 TOTAL PRODUCTION PLANT 879,650,427 844,887,327 34,763,100
189
190 TRANSMISSION PLANT
191 350/LAND&LAND RIGHTS L 111 10,640,184 10,219,692 420,492
192 352/STRUCTURES&IMPROVEMENTS L116 35,178,162 33,787,748 1,390,414
193 353/STATION EQUIPMENT L 121 125,602,861 120,631,230 4,971,631
194 354/TOWERS&FIXTURES L 127 82,555,492 79,292,963 3,262,529
195355/POLES&FIXTURES L132 81,819,694 78,576,448 3,243,247
196356/OVERHEAD CONDUCTORS&DEVICES L137 89,515,586 85,970,519 3,545,067
197359/ROADS&TRAILS L142 300,145 288,284 11,861
198 TOTAL TRANSMISSION PLANT 425,612,124 408,766,883 16,845,241
199
200 DISTRIBUTION PLANT
201 360/LAND&LAND RIGHTS L 149 267,036 255,713 11,323
202 361/STRUCTURES&IMPROVEMENTS L150 17,597,451 16,831,194 766,257
203 362/STATION EQUIPMENT L 151 76,945,502 73,812,260 3,133,242
204363/BATTERY STORAGE L152 7,339,093 7,049,058 290,035
205 364/POLES,TOWERS&FIXTURES L 153 148,616,411 136,973,399 11,643,013
206365/OVERHEAD CONDUCTORS&DEVICES L154 59,437,082 56,106,885 3,330,196
207 366/UNDERGROUND CONDUIT L 155 19,957,781 19,637,224 320,557
208 367/UNDERGROUND CONDUCTORS&DEVICES L 156 109,843,417 108,186,724 1,656,694
209 368/LINE TRANSFORMERS L 157 206,097,998 194,795,968 11,302,031
210 369/SERVICES L 158 46,522,754 44,606,753 1,916,001
211 370/METERS L 159 40,491,460 39,251,646 1,239,814
212 371/INSTALLATIONS ON CUSTOMER PREMISES L160 1,018,383 951,621 66,761
213373/STREET LIGHTING SYSTEMS L161 1,852,662 1,760,454 92,207
214 TOTAL DISTRIBUTION PLANT 735,987,029 700,218,898 35,768,131
215
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 6 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
216***TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION`
217
218 GENERAL PLANT
219 389/LAND&LAND RIGHTS L 166 - - -
220390/STRUCTURES&IMPROVEMENTS L167 37,467,073 35,875,090 1,591,983
221 391/OFFICE FURNITURE&EQUIPMENT L 168 19,565,369 18,734,033 831,336
222 392/TRANSPORTATION EQUIPMENT L 169 27,046,555 25,897,341 1,149,213
223 393/STORES EQUIPMENT L 170 1,688,739 1,616,985 71,755
224 394/TOOLS,SHOP&GARAGE EQUIPMENT L171 5,388,701 5,159,734 228,967
225 395/LABORATORY EQUIPMENT L172 7,306,941 6,996,467 310,473
226 396/POWER OPERATED EQUIPMENT L173 6,817,185 6,527,521 289,664
227 397/COMMUNICATIONS EQUIPMENT L 174 36,291,244 34,749,222 1,542,022
228 398/MISCELLANEOUS EQUIPMENT L 175 4,486,993 4,296,340 190,653
229 TOTAL GENERAL PLANT 146,058,799 139,852,732 6,206,067
230
231 UNDER-/OVERALLOCATED SALVAGE L 97 - - -
232 TOTAL DEPR BEFORE FAS143/OTHER 2,187,308,379 2,093,725,841 93,582,539
233
234 FAS 143ADJ&/OR DISALLOWED COSTS L 97 3,001,094 2,877,713 123,381
235 TOTAL ACCUM PROVISION DEPRECIATION 2,190,309,473 2,096,603,554 93,705,920
236
237 AMORTIZATION OF OTHER UTILITY PLANT
238 INTANGIBLE PLANT L 97 20,202,730 19,372,156 830,574
239 HYDRAULIC PRODUCTION L101 27,392,039 26,309,527 1,082,512
240
241 TOTAL AMORT OF OTHER UTILITY PLANT 47,594,769 45,681,683 1,913,086
242
243 TOTAL ACCUM PROVISION FOR DEPR
244 &AMORTIZATION OF OTHER UTILITY PLANT 2,237,904,242 2,142,285,237 95,619,006
245
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 7 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
246"`TABLE 3-ADDITIONS&DELETIONS TO RATE BASE'"
247
248 NET ELECTRIC PLANT IN SERVICE 4,861,056,819 4,655,239,540 205,817,279
249 LESS:
250 252 CUSTOMER ADVANCES FOR CONSTRUCTION
251 POWER SUPPLY D10 - - -
252 OTHER DA252 32,170,424 32,110,363 60,062
253 TOTAL CUSTOMER ADV FOR CONSTRUCTION 32,170,424 32,110,363 60,062
254
255 ACCUMULATED DEFERRED INCOME TAXES
256 190/ACCUMULATED DEFERRED INCOME TAXES
257 CUSTOMER ADVANCES FOR CONSTRUCTION DA252 (3,854,109) (3,846,913) (7,196)
258 OTHER LABOR (13,759,745) (13,170,392) (589,353)
259 TOTAL ACCOUNT190 (17,613,854) (17,017,305) (596,549)
260 281/ACCELERATED AMORTIZATION P7o1P - - -
261 282/OTHER PROPERTY P1o1P 395,105,792 378,317,670 16,788,122
262 283/OTHER P1o1P 10,180,872 9,748,285 432,587
263 TOTAL ACCUM DEFERRED INCOME TAXES 387,672,810 371,048,649 16,624,160
264
265 NET ELECTRIC PLANT IN SERVICE 4,441,213,585 4,252,080,528 189,133,057
266 ADD:
267 WORKING CAPITAL
268 151/FUEL INVENTORY Eio 19,716,209 18,884,385 831,824
269 154/PLANT MATERIALS&SUPPLIES
270 PRODUCTION-GENERAL L 105 14,733,716 14,151,451 582,265
271 TRANSMISSION-GENERAL L143 32,918,344 31,615,444 1,302,900
272 DISTRIBUTION-GENERAL L 163 67,378,274 64,257,741 3,120,534
273 OTHER-UNCLASSIFIED L 179 4,737,661 4,536,490 201,171
274 TOTAL ACCOUNT154 119,767,996 114,561,126 5,206,870
275 165/PREPAID ITEMS
276 AD VALOREM TAXES L 707 - - -
277 OTHER PROD-RELATED PREPAYMENTS D10 - - -
278 INSURANCE L 105 - - -
279 PENSION-RELATED PREPAYMENTS L 1002 - - -
280 SOFTWARE CONTRACTS L 95 - - -
281 MISCELLANEOUS PREPAYMENTS P7o1P - - -
282 TOTAL ACCOUNT 165 - - -
283 WORKING CASH ALLOWANCE L 623 - - -
284
285 TOTAL WORKING CAPITAL 139,484,205 133,445,511 6,038,694
286
287 NET ELECTRIC PLANT IN SERVICE 4,580,697,790 4,385,526,039 195,171,751
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 8 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
3 DESCRIPTION SOURCE SYSTEM IPUC OPUC
288***TABLE 3-ADDITIONS&DELETIONS TO RATE BASE***
289
290 NET ELECTRIC PLANT IN SERVICE 4,580,697,790 4,385,526,039 195,171,751
291 ADD:
292 105/PLANT HELD FOR FUTURE USE
293 HYDRAULIC PRODUCTION L 101 - - -
294 TRANS LAND&LAND RIGHTS L III - - -
295 TRANS STRUCTURES&IMPROVEMENTS L 116 - - -
296 TRANS STATION EQUIPMENT L 121 - - -
297 DIST LAND&LAND RIGHTS L 149 - - -
298 DIST STRUCTURES&IMPROVEMENTS L 150 - - -
299 GEN LAND&LAND RIGHTS L 166 - - -
300 GEN STRUCTURES&IMPROVEMENTS L 167 - - -
301 TOTAL PLANT HELD FOR FUTURE USE - - -
302
303 ELECTRIC PLANT ACQUISITION ADJ:114/5 CIDA 628,247 628,247 -
304
305 DEFERRED PROGRAMS:
306 182/CONSERVATION PROGRAMS
307 IDAHO DEFERRED CONSERVATION PROGRAMS CIDA - - -
308 OREGON DEFERRED CONSERVATION PROGRAMS CODA - - -
309 TOTAL CONSERVATION PROGRAMS - - -
310 182/MISC.OTHER REGULATORY ASSETS
311 CUB FUND INTEREST-OPUC ORDER I5-399 CODA 59,702 - 59,702
312 AM.FALLS BOND REFINANCE D10 72,977 70,093 2,884
313 SFAS 87 CAPITALIZED PENSION-OPUC ORDER 10-064 CODA 7,096,835 - 7,096,835
314 CLOUD COMPUTING-IPUC ORDER 34707 CIDA 1,250,083 1,250,083 -
315 WILDFIRE MITIGATION-IPUC ORDER 35077 CIDA 24,651,249 24,651,249 -
316 SIEMENS LTP DEFERRED RATE BASE-IPUC ORDER 33420 CIDA 8,181,006 8,181,006 -
317 SIEMENS LTP RATE BASE-IPUC ORDER 33420 CIDA 12,207,705 12,207,705 -
318 SIEMENS LTP DEFERRED RATE BASE-OPUC ORDER 15-387 CODA 343,307 - 343,307
319 SIEMENS LTP RATE BASE-OPUC ORDER 15-387 CODA 471,789 - 471,789
320 TOTAL OTHER REGULATORY ASSETS 54,334,654 46,360,137 7,974,517
321 186/MISC.OTHER DEFERRED PROGRAMS EIO - - -
322 254/JIM BRIDGER PLANT END OF LIFE DEPR-OPUC ORD 12-296 CODA (2,753,872) - (2,753,872)
323 RECONNECT FEES-OPUC ADV 16-09 CODA (17,468) - (17,468)
324 TOTAL DEFERRED PROGRAMS 51,563,314 46,360,137 5,203,177
325
326 DEVELOPMENT OF IERCO RATE BASE
327 INVESTMENT IN IERCO EIO 18,375,460 17,600,202 775,258
328 PREPAID COAL ROYALTIES EIO 606,862 581,259 25,603
329 NOTES RECEIVABLE FROM SUBSIDIARY EIO 17,209,739 16,483,663 726,076
330 TOTAL SUBSIDIARY RATE BASE 36,192,061 34,665,124 1,526,937
331 Exhibit No. 6
332 TOTAL COMBINED RATE BASE 4,669,081,412 4,467,179,547 201,901,865
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 9 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
333***TABLE 4-OPERATING REVENUES
334 OPERATING REVENUES
335 FIRM ENERGY SALES
336 440-448/RETAIL RETREV 1,283,843,868 1,230,016,095 53,827,773
337 447/ FIRM SALES FOR RESALE E10 - - -
338447/SYSTEM OPPORTUNITY SALES E10 29,035,180 27,810,191 1,224,989
339 TOTAL SALES OF ELECTRICITY 1,312,879,048 1,257,826,285 55,052,763
340
341 OTHER OPERATING REVENUES
342 415/MERCHANDISING REVENUES D60 4,655,894 4,483,811 172,083
343
3"449/OATT TARIFF REFUND
345 NETWORK D11 - - -
346 POINT-TO-POINT D11 - - -
347 TOTALACCOUNT449 - - -
348
349 4511 MISCELLANEOUS SERVICE REVENUES DA451 5,220,513 5,158,858 61,655
350
351 454/RENTS FROM ELECTRIC PROPERTY
352 SUBSTATION EQUIPMENT L121 3,272,778 3,143,234 129,544
353 TRANSFORMER RENTALS 011 17,330 16,645 685
354 LINE RENTALS 011 - - -
355 COGENERATION L 490 1,896,418 1,816,408 80,010
356 DARK FIBER PROJECT CIDA 66,667 66,667 -
357 POLE ATTACHMENTS L 153 1,756,476 1,618,869 137,607
358 FACILITIES CHARGES DA454 10,841,971 10,407,743 434,228
359 OTHER RENTALS L101 1,246,139 1,196,893 49,246
360 WATER LEASE E10 66,960 64,135 2,825
361 TOTALACCOUNT454 19,164,738 18,330,593 834,145
362
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 10 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
363 4561 OTHER ELECTRIC REVENUES
364 TRANSMISSION-NETWORK SERVICES D11 10,740,800 10,316,332 424,468
365 TRANSMISSION-NETWORK SERVICES-DISTFACILITIES D60 765,132 736,853 28,279
366 TRANSMISSION-POINT-TO-POINT D71 49,148,205 47,205,906 1,942,299
367 ALTERNATE TRANSMISSION SERV.CHG. L 144 - - -
368 PHOTOVOLTAIC STATION SERVICE L 163 - - -
369 DSM RIDER FUNDS DARIDER - - -
370 STANDBY SERVICE CHARGE CIDA 741,858 741,858 -
371 SIERRA PACIFIC USAGE CHARGE Eio - - -
372 BPA-OTHER REVENUE Dio - - -
373 ANTELOPE L 515 - - -
374 MISCELLANEOUS PTD 8,346 7,991 355
375 TOTALACCOUNT456 61,404,340 59,008,940 2,395,401
376
377 TOTAL OTHER OPERATING REVENUES 90,445,486 86,982,202 3,463,284
378
379 TOTAL OPERATING REVENUES 1,403,324,534 1,344,808,487 58,516,046
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 11 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
3 DESCRIPTION SOURCE SYSTEM IPUC OPUC
380***TABLE 5-OPERATION&MAINTENANCE EXPENSES
381
382 STEAM POWER GENERATION
383 OPERATION
384 500/SUPERVISION&ENGINEERING DIO (147,309) (141,488) (5,822)
385 501/FUEL E10 65,523,000 62,758,595 2,764,405
386
387 502/STEAM EXPENSES
388 LABOR DIO - - -
389 OTHER E10 (2,000) (1,916) (84)
390 TOTAL ACCOUNT502 (2,000) (1,916) (84)
391 505/ELECTRIC EXPENSES
392 LABOR DIO - - -
393 OTHER E10 (0) (0) (0)
394 TOTAL ACCOUNT 505 (0) (0) (0)
395 506/MISCELLANEOUS EXPENSES DIO (59) (57) (2)
396 507/RENTS L 100 - - -
397 TOTAL STEAM OPERATION EXPENSES 65,373,631 62,615,135 2,758,496
398
399 MAINTENANCE
400 510/SUPERVISION&ENGINEERING DIO (282,132) (270,982) (11,150)
401 511 /STRUCTURES DIO (0) (0) (0)
402 512/BOILER PLANT
403 LABOR DIO - - -
404 OTHER E10 0 0 0
405 TOTAL ACCOUNT 512 0 0 0
406 513/ELECTRIC PLANT
407 LABOR DIO - - -
408 OTHER E10 - - -
409 TOTAL ACCOUNT 513 - - -
410 514/MISCELLANEOUS STEAM PLANT D70 0 0 0
411 TOTAL STEAM MAINTENANCE EXPENSES (282,131) (270,982) (11,150)
412
413 TOTAL STEAM GENERATION EXPENSES 65,091,500 62,344,153 2,747,347
414
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 12 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
415***TABLE 5-OPERATION&MAINTENANCE EXPENSES'
416
417 HYDRAULIC POWER GENERATION
418 535/SUPERVISION&ENGINEERING L 879 5,490,907 5,272,917 217,990
419 536/WATER FOR POWER
420 WATER LEASE D10 - - -
421 OTHER DIO 3,312,731 3,181,814 130,917
422 TOTAL ACCOUNT 536 3,312,731 3,181,814 130,917
423
424 537/HYDRAULIC EXPENSES DIO 19,552,157 18,779,471 772,686
425 538/ELECTRIC EXPENSES
426 LABOR DIO 1,915,562 1,839,861 75,702
427 OTHER E10 513,003 491,360 21,644
428 TOTAL ACCOUNT 538 2,428,565 2,331,220 97,345
429
430 539/MISCELLANEOUS EXPENSES DIO 6,049,766 5,810,684 239,082
431 540/RENTS DIO 311,854 299,530 12,324
432
433 TOTAL HYDRAULIC OPERATION EXPENSES 37,145,981 35,675,637 1,470,344
434
435 MAINTENANCE
436 541/SUPERVISION&ENGINEERING L 885 298,844 287,034 11,810
437 542/STRUCTURES DIO 937,125 900,090 37,034
438 543/RESERVOIRS,DAMS&WATERWAYS D70 2,361,075 2,267,768 93,308
439 544/ELECTRIC PLANT
440 LABOR DIO 1,725,010 1,656,839 68,171
441 OTHER E10 697,230 667,814 29,416
442 TOTAL ACCOUNT544 2,422,240 2,324,653 97,587
443
444 545/MISCELLANEOUS HYDRAULIC PLANT L 101 3,701,651 3,555,365 146,286
445
446 TOTAL HYDRAULIC MAINTENANCE EXPENSES 9,720,935 9,334,909 386,026
447
448 TOTAL HYDRAULIC GENERATION EXPENSES 46,866,916 45,010,546 1,856,370
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 13 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
449"`TABLE 5-OPERATION&MAINTENANCE EXPENSES
450 OTHER POWER GENERATION
451 OPERATION
452 546/SUPERVISION&ENGINEERING L 892 759,844 729,816 30,028
453 547/FUEL
454 SALMON DIESEL E10 16,517 15,820 697
455 OTHER E10 119,653,675 114,605,506 5,048,169
456 TOTAL ACCOUNT547 119,670,192 114,621,327 5,048,866
457
458 548/GENERATING EXPENSES
459 LABOR DIO 470,542 451,946 18,595
460 OTHER E10 5,285,971 5,062,957 223,014
461 TOTAL ACCOUNT548 5,756,513 5,514,903 241,610
462
463549/MISCELLANEOUS EXPENSES DIO 933,018 896,145 36,872
464 550/RENTS DIO - - -
465
466 TOTAL OTHER POWER OPER EXPENSES 127,119,567 121,762,191 5,357,376
467
468 MAINTENANCE
469 551/SUPERVISION&ENGINEERING L 898 - - -
470 552/STRUCTURES DIO 148,767 142,887 5,879
471 553/GENERATING&ELECTRIC PLANT
472 LABOR D10 71,469 68,645 2,824
473 OTHER E10 (91,258) (87,407) (3,850)
474 TOTAL ACCOUNT 553 (19,788) (18,763) (1,026)
475
476 554/MISCELLANEOUS EXPENSES L 103 5,257,613 5,049,837 207,777
477 TOTAL OTHER POWER MAINT EXPENSES 5,386,592 5,173,962 212,630
478
479 TOTAL OTHER POWER GENERATION EXP 132,506,159 126,936,153 5,570,006
480
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 14 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
481 OTHER POWER SUPPLY EXPENSE
482 555.0/PURCHASED POWER
483 PURCHASED POWER-TRANS LOSSES E10 1,096,106 1,049,861 46,245
484 DEMAND RESPONSE INCENTIVES CIDA 10,240,003 10,240,003 -
485 OTHER PURCHASED POWER E10 99,465,021 95,268,608 4,196,413
486 TOTAL ACCOUNT555.0 110,801,130 106,558,473 4,242,657
487 555.1/COGENERATION&SMALL POWER PROD
488 CAPACITY RELATED D70 - - -
489 ENERGY RELATED E10 214,448,755 205,401,197 9,047,558
490 TOTAL COGEN&SMALL POWER PROD 214,448,755 205,401,197 9,047,558
491
492 TOTAL ACCOUNT555 325,249,885 311,959,670 13,290,215
493
494 556/LOAD CONTROL&DISPATCHING EXPENSES D10 - - -
495 557/OTHER EXPENSES
496 IDAHO POWER COST-RELATED EXPENSES CIDA 11,089,392 11,089,392 -
497 OREGON POWER COST-RELATED EXPENSES CODA 2,742,786 - 2,742,786
498 OTHER D10 2,238,194 2,149,742 88,452
499 TOTAL ACCOUNT 557 16,070,371 13,239,134 2,831,237
500
501 TOTAL OTHER POWER SUPPLY EXPENSES 341,320,256 325,198,804 16,121,452
502
503 TOTAL PRODUCTION EXPENSES 585,784,831 559,489,656 26,295,175
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 15 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
504"**TABLE 5-OPERATION&MAINTENANCE EXPENSES
505
506 TRANSMISSION EXPENSES
507
508 OPERATION
509 560/SUPERVISION&ENGINEERING L 144 3,095,555 2,973,034 122,521
510 561/LOAD DISPATCHING D12 5,982,841 5,746,404 236,437
511 562/STATION EXPENSES L121 2,827,336 2,715,424 111,912
512 563/OVERHEAD LINE EXPENSES L127+132+137 1,307,218 1,255,466 51,752
513 565/TRANSMISSION OF ELECTRICITY BY OTHERS EIO 10,263,139 9,830,139 433,000
514 566/MISCELLANEOUS EXPENSES L 144 - - -
515 567/RENTS L144 5,051,708 4,851,762 199,945
516
517 TOTAL TRANSMISSION OPERATION 28,527,797 27,372,229 1,155,568
518
519 MAINTENANCE
520 568/SUPERVISION&ENGINEERING L144 381,737 366,628 15,109
521 569/STRUCTURES L116 1,905,784 1,830,458 75,326
522 570/STATION EQUIPMENT L 121 3,687,126 3,541,182 145,944
523 571/OVERHEAD LINES L 127+132+137 1,498,786 1,439,450 59,336
524 573/MISCELLANEOUS PLANT L 143 (78) (75) (3)
525 575/OPER TRANS MKT ADMIN-EIM L144 703,023 675,198 27,825
526
527 TOTAL TRANSMISSION MAINTENANCE 8,176,378 7,852,840 323,537
528
529 TOTAL TRANSMISSION EXPENSES 36,704,175 35,225,070 1,479,105
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 16 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
3 DESCRIPTION SOURCE SYSTEM IPUC OPUC
530***TABLE 5-OPERATION&MAINTENANCE EXPENSES*'
531
532 DISTRIBUTION EXPENSES
533
534 OPERATION
535 580/SUPERVISION&ENGINEERING L163 4,883,505 4,657,332 226,173
536 581/LOAD DISPATCHING D60 6,701,081 6,453,408 247,673
537 582/STATION EXPENSES L151 1,905,068 1,827,493 77,575
538 583/OVERHEAD LINE EXPENSES L 153+154 5,856,482 5,439,541 416,941
539 584/UNDERGROUND LINE EXPENSES L 155+156 5,744,802 5,657,373 87,429
540 585/STREET LIGHTING&SIGNAL SYSTEMS L 161 (17,461) (16,592) (869)
541586/METER EXPENSES L159 7,459,560 7,231,155 228,405
542 587/CUSTOMER INSTALLATIONS EXPENSE L160 1,444,874 1,350,153 94,721
543 588/MISCELLANEOUS EXPENSES L 163 4,637,720 4,422,930 214,790
544 589/RENTS L 163 639,456 609,840 29,616
545 TOTAL DISTRIBUTION OPERATION 39,255,088 37,632,635 1,622,453
546
547 MAINTENANCE
548 590/SUPERVISION&ENGINEERING L 163 5,684 5,421 263
549 591/STRUCTURES L 150 - - -
550 592/STATION EQUIPMENT L 151 5,931,659 5,690,120 241,539
551 593/OVERHEAD LINES L153+154 34,078,337 31,652,194 2,426,143
552 594/UNDERGROUND LINES L155+156 725,137 714,102 11,036
553595/LINE TRANSFORMERS L157 65,073 61,504 3,568
554 596/STREET LIGHTING&SIGNAL SYSTEMS L 161 149,941 142,478 7,463
555 597/METERS L 159 1,130,731 1,096,109 34,622
556 598/MISCELLANEOUS PLANT L 163 185,410 176,823 8,587
557 TOTAL DISTRIBUTION MAINTENANCE 42,271,971 39,538,751 2,733,220
558
559 TOTAL DISTRIBUTION EXPENSES 81,527,059 77,171,386 4,355,674
560
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 17 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
561 CUSTOMER ACCOUNTING EXPENSES
562 901/SUPERVISION L 959 1,020,032 975,561 44,472
563902/METER READING CW902 2,160,189 1,868,578 291,611
564903/CUSTOMER RECORDS&COLLECTIONS CW903 17,401,772 16,832,566 569,206
565904/UNCOLLECTIBLE ACCOUNTS Cw904 3,830,484 3,458,798 371,686
566 905/MISC EXPENSES L 563+564+565 (358) (339) (19)
567 TOTAL CUSTOMER ACCOUNTING EXPENSES 24,412,119 23,135,163 1,276,955
568 CUSTOMER SERVICES&INFORMATION EXPENSES
569 907/SUPERVISION L 966 1,076,445 1,034,603 41,841
570 908/CUSTOMER ASSISTANCE
571 SYSTEM CONSERVATION E100 312,791 299,594 13,197
572 OTHER DA908 8,884,565 8,540,260 344,305
573 TOTAL ACCOUNT908 9,197,356 8,839,855 357,501
574 909/INFORMATION&INSTRUCTIONAL DA909 282,865 273,844 9,021
575 910/MISCELLANEOUS EXPENSES L 573+574 889,938 855,532 34,407
576 TOTAL CUST SERV&INFORMATN EXPENSES 11,446,605 11,003,834 442,770
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 18 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
577***TABLE 5-OPERATION&MAINTENANCE EXPENSES
578 SALES EXPENSES
579 912/DEMO&SELLING EXPENSES E10 - - -
580 TOTAL ACCOUNT 924 - - -
581
582 ADMINISTRATIVE&GENERAL EXPENSES
583 920/ADMINISTRATIVE&GENERAL SALARIES LABOR 92,786,842 88,812,625 3,974,217
584 921/OFFICE SUPPLIES LABOR 16,584,609 15,874,262 710,347
585 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR LABOR (51,999,902) (49,772,659) (2,227,243)
586 923/OUTSIDE SERVICES LABOR 10,180,054 9,744,026 436,029
587 924/PROPERTY INSURANCE
588 PRODUCTION-STEAM D10 465,139 446,757 18,382
589 ALL RISK&MISCELLANEOUS P710P 2,935,891 2,817,492 118,398
590 TOTAL ACCOUNT 924 3,401,030 3,264,249 136,780
591
592925/INJURIES&DAMAGES LABOR 12,296,837 11,770,143 526,694
593 926/EMPLOYEE PENSIONS&BENEFITS LABOR 51,951,225 49,726,067 2,225,158
594 EMPLOYEE PENSIONS&BENEFITS-OREGON CODA 514,677 - 514,677
595 EMPLOYEE PENSIONS&BENEFITS-IDAHO CIDA 35,182,378 35,182,378 -
596 EMPLOYEE PENSIONS&BENEFITS-FERC D11 - - -
597 927/FRANCHISE REQUIREMENTS CIDA - - -
598 928/REGULATORY COMMISSION EXPENSES
599 FERC ADMIN ASSESS&SECURITIES
600 CAPACITY RELATED D10 3,043,871 2,923,580 120,291
601 ENERGY RELATED E10 1,044,908 1,000,824 44,084
602 FERC RATE CASE D11 - - -
603 FERC ORDER472 E99 1,108,266 1,061,278 46,988
604 FERC OTHER D11 283,013 271,828 11,184
605 FERC-OREGON HYDRO FEE D11 271,717 260,979 10,738
606 SEC EXPENSES L 179 - - -
607 IDAHO PUC-RATE CASE CIDA - - -
608 -OTHER CIDA 48,457 48,457
609 OREGON PUC-RATE CASE CODA - - -
610 -OTHER CODA 329,733 - 329,733
611 TOTAL ACCOUNT 928 6,129,965 5,566,945 563,019
612
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 19 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
613 929/DUPLICATE CHARGES LABOR - - -
614 930.11 GENERAL ADVERTISING LABOR - - -
615 930.21 MISCELLANEOUS EXPENSES LABOR 3,387,272 3,242,190 145,083
616 931 I RENTS L 177 - - -
617 TOTAL ADM&GEN OPERATION 180,414,987 173,410,225 7,004,761
618
619 9351 GENERAL PLANT MAINTENANCE L 177 8,280,911 7,929,054 351,858
620 TOTAL ADMIN&GENERAL EXPENSES 188,695,898 181,339,279 7,356,619
621
622 4161 MERCHANDISING EXPENSE D60 5,870,784 5,653,799 216,985
623 TOTAL OPER&MAINT EXPENSES 934,441,471 893,018,187 41,423,284
624
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 20 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
625***TABLE 6-DEPRECIATION&AMORTIZATION EXPENSE
626
627 DEPRECIATION EXPENSE
628 310-316 1 STEAM PRODUCTION L 100 10,246,819 9,841,873 404,946
629 330-336/HYDRAULIC PRODUCTION L101 29,099,413 27,949,427 1,149,986
630 340-346/OTHER PRODUCTION-LANGLEY L102 12,559,576 12,063,232 496,345
631 340-3461 OTHER PRODUCTION-DANSKIN/BENNETT MTN L 103 6,483,109 6,226,902 256,207
632 TOTAL PRODUCTION PLANT 58,388,917 56,081,433 2,307,485
633
634 TRANSMISSION PLANT
635 350/LAND&LAND RIGHTS L 111 477,848 458,964 18,884
636 352/STRUCTURES&IMPROVEMENTS L116 2,161,701 2,076,260 85,441
637 353/STATION EQUIPMENT L 121 11,225,973 10,781,625 444,348
638 354/TOWERS&FIXTURES L127 2,950,779 2,834,166 116,612
639 355/POLES&FIXTURES L 132 7,018,607 6,740,397 278,210
640 3561 OVERHEAD CONDUCTORS&DEVICES L 137 4,276,282 4,106,929 169,353
641 359/ROADS&TRAILS L 142 2,796 2,685 110
642 TOTAL TRANSMISSION PLANT 28,113,987 27,001,027 1,112,959
643
644 DISTRIBUTION PLANT
645360/LAND&LAND RIGHTS L149 27,253 26,097 1,156
646 361/STRUCTURES&IMPROVEMENTS L150 1,582,324 1,513,424 68,900
647 362/STATION EQUIPMENT L 151 6,685,998 6,413,742 272,256
648 3631 BATTERY STORAGE L 152 15,080,023 14,484,072 595,951
649 364/POLES,TOWERS&FIXTURES L 153 6,807,143 6,273,853 533,290
650 3651 OVERHEAD CONDUCTORS&DEVICES L 154 3,769,855 3,558,634 211,221
651366/UNDERGROUND CONDUIT L155 1,424,328 1,401,450 22,877
652 367/UNDERGROUND CONDUCTORS&DEVICES L 156 8,603,139 8,473,384 129,755
653368/LINE TRANSFORMERS L157 15,695,524 14,834,810 860,713
654 369/SERVICES L 158 1,249,138 1,197,693 51,445
655 370/METERS L 159 6,169,537 5,980,631 188,906
656 3711 INSTALLATIONS ON CUSTOMER PREMISES L 160 291,294 272,198 19,096
657 373 1 STREET LIGHTING SYSTEMS L161 251,969 239,428 12,541
658 TOTAL DISTRIBUTION PLANT 67,637,523 64,669,417 2,968,106
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 21 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
659***TABLE 6-DEPRECIATION&AMORTIZATION EXPENSE***
660
661 GENERALPLANT
662 389/LAND&LAND RIGHTS L 166 - - -
663390/STRUCTURES&IMPROVEMENTS L167 4,140,032 3,964,122 175,911
664 391/OFFICE FURNITURE&EQUIPMENT L 168 7,279,581 6,970,270 309,311
665 392/TRANSPORTATION EQUIPMENT L 169 6,037 5,781 257
666 393/STORES EQUIPMENT L 170 360,037 344,739 15,298
667 394/TOOLS,SHOP&GARAGE EQUIPMENT L 171 863,151 826,476 36,675
668 395/LABORATORY EQUIPMENT L172 935,849 896,085 39,764
669 396/POWER OPERATED EQUIPMENT L 173 - - -
670 397/COMMUNICATIONS EQUIPMENT L 174 5,859,096 5,610,142 248,954
671 3981 MISCELLANEOUS EQUIPMENT L 175 746,357 714,644 31,713
672 TOTAL GENERAL PLANT 20,190,141 19,332,258 857,883
673
674 403/BOARDMAN ARO DEPRECIATION EXP DAARO - - -
675 DEPR EXP BEFORE DISALLOWED COSTS 174,330,569 167,084,135 7,246,433
676
677 DEPRECIATION ON DISALLOWED COSTS L 675 (296,299) (283,983) (12,316)
678 TOTAL DEPRECIATION EXPENSE 174,034,269 166,800,152 7,234,117
679
680 AMORTIZATION EXPENSE
681 INTANGIBLE PLANT L 97 6,975,364 6,688,593 286,771
682 HYDRAULIC PRODUCTION L101 1,959,025 1,881,606 77,419
683 ADJUSTMENTS,GAINS&LOSSES L 97 15,018 14,424 593
684 TOTAL AMORTIZATION EXPENSE 8,949,407 8,584,623 364,784
685
686 TOTAL DEPRECIATION&AMORTIZATION EXP 182,983,676 175,384,775 7,598,900
687
688 411.093/4/ARO ACCRETION EXPENSE DAACCRETION 12,995 12,485 509
689
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 22 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
3 DESCRIPTION SOURCE SYSTEM IPUC OPUC
690***TABLE 7-TAXES OTHER THAN INCOME TAXES
691
692 TAXES OTHER THAN INCOME
693 FEDERALTAXES
694 FICA LABOR - - -
695 FUTA LABOR - - -
696 LESS PAYROLL DEDUCTION LABOR - - -
697
698 STATE TAXES
699 AD VALOREM TAXES
700 JIM BRIDGER STATION L100 1,310,444 1,258,656 51,788
701 VALMY L 100 279,802 268,744 11,058
702 BOARDMAN L 100 - - -
703 OTHER-PRODUCTION PLANT L105 5,023,123 4,824,613 198,510
704 OTHER-TRANSMISSION PLANT L 143 5,094,471 4,892,833 201,638
705 OTHER-DISTRIBUTION PLANT L 163 6,775,452 6,461,656 313,796
706 OTHER-GENERAL PLANT L177 1,071,005 1,025,498 45,507
707 SUB-TOTAL 19,554,298 18,732,002 822,296
708
709 LICENSES-HYDRO PROJECTS L 101 4,376 4,203 173
710
711 REGULATORY COMMISSION FEES
712 STATE OF IDAHO CIDA 2,837,473 2,837,473 -
713 STATE OF OREGON CODA 260,575 - 260,575
714
715 FRANCHISE TAXES
716 STATE OF OREGON CODA 944,305 - 944,305
717
718 OTHER STATE TAXES
719 UNEMPLOYMENTTAXES LABOR - - -
720 HYDRO GENERATION KWH TAX E10 1,659,564 1,589,547 70,017
721 IRRIGATION-PIC E10 293,571 281,185 12,386
722
723 CANADA GST TAXES E10 - - -
724
725 TOTAL TAXES OTHER THAN INCOME 25,554,161 23,444,410 2,109,751
726
727
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 23 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
728***TABLE 8-REGULATORY DEBITS/CREDITS
729 REGULATORY DEBITS/CREDITS
730 STATE OF IDAHO CioA 5,339,621 5,339,621 -
731 STATE OF OREGON CODA 317,709 - 317,709
732
733 TOTAL REGULATORY DEBITS/CREDITS 5,657,329 5,339,621 317,709
734
735
736"**TABLE 9-INCOME TAXES*"
737
738 410/411 NET PROVISION FOR DEFERRED INCOME TAXES
739 ACCOUNT#282-RELATED PioiP (12,766,841) (12,224,375) (542,466)
740 ACCOUNTS#1908#283-RELATED L769 (2,657,192) (2,583,469) (73,723)
741 TOTAL NET PROVISION FOR DEFERRED INCOME TAXES (15,424,032) (14,807,844) (616,189)
742
743411.4-INVESTMENT TAX CREDIT ADJUSTMENT PioiP 124,171,136 118,895,080 5,276,056
744
745 SUMMARY OF INCOME TAXES
746
747 TOTAL FEDERAL INCOME TAX L786 (101,137,048) (97,803,208) (3,333,840)
748
749 STATE INCOME TAX
750 STATE OF IDAHO L 852 (10,827,212) (10,427,509) (399,703)
751 STATE OF OREGON L 827 402,339 402,339 -
752 OTHER STATES L868 (129,664) (121,189) (8,475)
753 TOTAL STATE INCOME TAXES (10,554,538) (10,146,359) (408,178)
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 24 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
754***TABLE 10-CALCULATION OF FEDERAL INCOME TAX***
755
756 OPERATING REVENUES 1,403,324,534 1,344,808,487 58,516,046
757
758 OPERATING EXPENSES
759 OPERATION&MAINTENANCE 934,441,471 893,018,187 41,423,284
760 DEPRECIATION EXPENSE 174,034,269 166,800,152 7,234,117
761 AMORTIZATION OF LIMITED TERM PLANT 8,949,407 8,584,623 364,784
762 ACCRETION EXPENSE 12,995 12,485 509
763 TAXES OTHER THAN INCOME 25,554,161 23,444,410 2,109,751
764 REGULATORY DEBITSICREDITS 5,657,329 5,339,621 317,709
765 TOTAL OPERATING EXPENSES 1,148,649,632 1,097,199,478 51,450,153
766
767 BOOK-TAX ADJUSTMENT L 765 - - -
768
769 INCOME BEFORE TAX ADJUSTMENTS 254,674,902 247,609,009 7,065,893
770
771 INCOME STATEMENT ADJUSTMENTS
772 LONG TERM DEBT INTEREST EXPENSE L24 136,594,388 130,687,731 5,906,657
773 OTHER INTEREST EXPENSE L24 19,913,023 19,051,938 861,085
774 TOTAL INTEREST CHARGES 156,507,411 149,739,669 6,767,742
775
776 NET OPERATING INCOME BEFORE STATE INCOME TAXES 98,167,491 97,869,340 298,151
777
778 TOTAL STATE INCOME TAXES(ALLOWED) (6,670,047) (6,134,210) (535,836)
779
780 NET FEDERAL INCOME AFTER STATE INCOME TAXES 104,837,537 104,003,550 833,987
781
782 FEDERAL TAX AT21PERCENT 22,015,883 21,840,745 175,137
783 OTHER CURRENT TAX ADJUSTMENTS L782 (42,231,900) (41,895,943) (335,957)
784 PRIOR YEARS'TAX ADJUSTMENT L782 (9,810,034) (9,731,994) (78,039)
785
786 TOTAL FEDERAL INCOME TAX BEFORE OTHER ADJUSTMENTS (30,026,051) (29,787,192) (238,859)
787
788 OTHER TAX ADJUSTMENTS
789 ALLOWANCE FOR AFUDC P1o1P - - -
790 FEDERAL INCOME TAX ADJUSTMENTS-PLANT P1o1P (38,661,626) (37,018,886) (1,642,740)
791 FEDERAL INCOME TAX ADJUSTMENTS-OTHER L769 23,723,545 23,065,341 658,204
792 SUM OF OTHER ADJUSTMENTS (14,938,081) (13,953,545) (984,536)
793 FEDERAL TAX ON OTHER TAX ADJ AT 21 PERCENT (3,136,997) (2,930,244) (206,753)
794 FEDERAL GENERAL BUSINESS CREDITS P1o1P 67,974,000 65,085,772 2,888,228
795
796 TOTAL FEDERAL INCOME TAX (101,137,048) (97,803,208) (3,333,840)
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 25 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
8 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
797"*TABLE 11-OREGON STATE INCOME TAXES"*"
798
799 NET OPERATING INCOME BEFORE TAXES-OREGON L776 98,167,491 97,869,340 298,151
800
801 ALLOWANCE FOR AFUDC P1o1P - - -
802
803 STATE INCOME TAX ADJUSTMENTS-PLANT P101P (38,661,626) (37,018,886) (1,642,740)
804 STATE INCOME TAX ADJUSTMENTS-OTHER L769 23,723,545 23,065,341 658,204
805 TOTAL STATE INCOME TAX ADJUSTMENTS (14,938,081) (13,953,545) (984,536)
806 ADD: MFG DEDUCTION NOT ALLOWED L 769 - - -
807
808 TOTAL STATE INCOME TAX ADJUSTMENTS-OREGON (14,938,081) (13,953,545) (984,536)
809
810 INCOME SUBJECT TO OREGON TAX 83,229,410 83,915,795 (686,385)
811
812 IERCO TAXABLE INCOME E10 13,361,504 12,797,784 563,720
813 BONUS DEPRECIATION ADJUSTMENT P1o1P (6,823,240) (6,533,319) (289,921)
814 FEDERAL NOL L 750 - - -
815 TOTAL STATE TAXABLE INCOME-OREGON 89,767,674 90,180,260 (412,586)
816 APPORTIONMENT FACTOR(0.045454550) 4,099,103 4,099,103 -
817 POST APPORTIONMENT M ITEMS L 757 - - -
818 TOTAL TAXABLE INCOME-OREGON 4,099,103 4,099,103 -
819
820 OREGON TAX AT 6.6 PERCENT 270,541 270,541 -
821 LESS:INVESTMENT TAX CREDIT P701P - - -
822
823 STATE INCOME TAX ALLOWED-OREGON 270,541 270,541 -
824 ADD: FIN 48 ADJUSTMENT L 819 282,224 282,224 -
825 PRIOR YEARS'TAX ADJUSTMENT L820 (150,426) (150,426) -
826
827 STATE INCOME TAX PAID-OREGON 402,339 402,339 -
828
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 26 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
829-TABLE*TABLE 12-IDAHO STATE INCOME TAXES***
830
831 NET OPERATING INCOME BEFORE TAXES-IDAHO L776 98,167,491 97,869,340 298,151
832
833 ALLOWANCE FOR AFUDC P101P - - -
834
835 STATE INCOME TAX ADJUSTMENTS-PLANT P101P (38,661,626) (37,018,886) (1,642,740)
836 STATE INCOME TAX ADJUSTMENTS-OTHER L769 23,723,545 23,065,341 658,204
837 STATE INCOME TAX ADJUSTMENTS (14,938,081) (13,953,545) (984,536)
838
839 INCOME SUBJECT TO IDAHO TAX 83,229,410 83,915,795 (686,385)
840
841 IERCO TAXABLE INCOME E10 13,361,504 12,797,784 563,720
842 BONUS DEPRECIATION ADJUSTMENT P701P (42,661,135) (40,848,455) (1,812,680)
843 FEDERAL NOL L 750 - - -
844 TOTAL STATE TAXABLE INCOME-IDAHO 53,929,779 55,865,124 (1,935,345)
845
846 IDAHO TAX AT 5.6 PERCENT 3,020,068 3,128,447 (108,379)
847 LESS:INVESTMENT TAX CREDIT P701P 10,057,246 9,629,912 427,334
848
849 STATE INCOME TAX ALLOWED-IDAHO (7,037,178) (6,501,465) (535,714)
850 ADD: FIN 48 ADJUSTMENT L 845 - - -
851 PRIOR YEARS'TAX ADJUSTMENT L846 (3,790,034) (3,926,044) 136,011
852 STATE INCOME TAX PAID-IDAHO (10,827,212) (10,427,509) (399,703)
853
854
855 OTHER STATE INCOME TAX
856 INCOME SUBJECT TO TAX 83,229,410 83,915,795 (686,385)
857
858 IERCO TAXABLE INCOME E10 13,361,504 12,797,784 563,720
859 BONUS DEPRECIATION ADJUSTMENT P701P - - -
860 FEDERAL NOL L 750 - - -
861 TOTAL TAXABLE INCOME BEFORE APPORTIONMENT-OTHER STATES 96,590,914 96,713,579 (122,665)
862 POST APPORTIONMENT M ITEMS L 757 - - -
863 TOTAL TAXABLE INCOME-OTHER STATES 96,590,914 96,713,579 (122,665)
864
865 OTHER TAX AT0.1PERCENT 96,591 96,714 (123)
866 ADD: FIN 48 ADJUSTMENT L 852 - - -
867 PRIOR YEARS'TAX ADJUSTMENT L852 (226,255) (217,903) (8,353)
868 OTHER STATES'INCOME TAX PAID (129,664) (121,189) (8,475)
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 27 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
869***TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
870 STEAM POWER GENERATION
871 500-513/TOTAL STEAM GENERATION Dio 442,341 424,860 17,481
872 HYDRAULIC POWER GENERATION
873 535/SUPERVISION&ENGINEERING L879 4,198,454 4,031,774 166,680
874536/WATER FOR POWER E10 870,626 833,895 36,732
875 537/HYDRAULIC EXPENSES D70 6,581,987 6,321,872 260,115
876 538/ELECTRIC EXPENSES Dio 1,659,356 1,593,780 65,576
877 539/MISCELLANEOUS EXPENSES Dio 3,733,853 3,586,294 147,559
878 540/RENTS Dio - - -
879 TOTAL HYDRAULIC OPERATION EXPENSES 17,044,277 16,367,615 676,662
880 541/SUPERVISION&ENGINEERING L 885 167,910 161,275 6,636
881542/STRUCTURES Dio 567,222 544,806 22,416
882543/RESERVOIRS,DAMS&WATERWAYS D70 301,175 289,273 11,902
883544/ELECTRIC PLANT Dio 1,724,170 1,656,032 68,138
884545/MISCELLANEOUS HYDRAULIC PLANT Dio 2,266,086 2,176,532 89,554
885 TOTAL HYDRAULIC MAINTENANCE EXPENSES 5,026,564 4,827,918 198,646
886 TOTAL HYDRAULIC GENERATION EXPENSES 22,070,840 21,195,533 875,307
887 OTHER POWER GENERATION
888 546/SUPERVISION&ENGINEERING L 892 582,577 559,554 23,023
889 548/GENERATING EXPENSES Dio - - -
890549/MISCELLANEOUS EXPENSES Dio 3,495,474 3,357,336 138,138
891550/RENTS Dio 496,069 476,464 19,604
892 TOTAL OTHER POWER OPER EXPENSES 4,574,120 4,393,354 180,766
893
894 551/SUPERVISION&ENGINEERING L 898 - - -
895 552/STRUCTURES D70 47,812 45,922 1,889
896553/GENERATING&ELECTRIC PLANT Dio 65,753 63,154 2,598
897 554/MISCELLANEOUS EXPENSES Dio 523,281 502,601 20,680
898 TOTAL OTHER POWER MAINT EXPENSES 636,845 611,678 25,168
899 TOTAL OTHER POWER GENERATION EXP 5,210,965 5,005,032 205,933
900 555/PURCHASE POWER E10 - - -
901 556/LOAD CONTROL&DISPATCHING EXPENSES D70 - - -
902 Dio 4,863,381 4,671,184 192,197
903 TOTAL OTHER POWER SUPPLY EXPENSES 4,863,381 4,671,184 192,197
904
905 TOTAL PRODUCTION EXPENSES 32,587,528 31,296,609 1,290,919
906
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 28 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
907***TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
908
909 TRANSMISSION EXPENSES
910 560/SUPERVISION&ENGINEERING L144 2,317,807 2,226,069 91,738
911 561/LOAD DISPATCHING D12 3,373,689 3,240,363 133,326
912 562/STATION EXPENSES L121 1,900,727 1,825,492 75,235
913 563/OVERHEAD LINE EXPENSES L127+132+137 483,392 464,255 19,137
914 565/TRANSMISSION OF ELECTRICITY BY OTHERS E10 - - -
915 566/MISCELLANEOUS EXPENSES L 529 - - -
916 567/RENTS L 144 - - -
917 TOTAL TRANSMISSION OPERATION 8,075,615 7,756,179 319,436
918 568/SUPERVISION&ENGINEERING L 144 139,203 133,694 5,510
919 569/STRUCTURES L 116 1,426,838 1,370,442 56,396
920 570/STATION EQUIPMENT L 121 2,616,011 2,512,464 103,547
921 571/OVERHEAD LINES L 127+132+137 972,477 933,977 38,500
922 575/OPER TRANS MKT ADMIN-EIM L144 1,155 1,109 46
923 TOTAL TRANSMISSION MAINTENANCE 5,155,684 4,951,686 203,998
924 TOTAL TRANSMISSION EXPENSES 13,231,299 12,707,865 523,434
925
926 DISTRIBUTION EXPENESES
927 580/SUPERVISION&ENGINEERING L 163 3,237,656 3,087,708 149,948
928 581/LOAD DISPATCHING D60 4,740,713 4,565,495 175,218
929 582/STATION EXPENSES L151 1,048,893 1,006,182 42,711
930 583/OVERHEAD LINE EXPENSES L153+154 3,701,154 3,437,657 263,497
931584/UNDERGROUND LINE EXPENSES L155+156 1,636,360 1,611,456 24,903
932 585/STREET LIGHTING&SIGNAL SYSTEMS L 161 1,916 1,821 95
933586/METER EXPENSES L159 4,739,824 4,594,694 145,129
934 587/CUSTOMER INSTALLATIONS EXPENSE L160 857,913 801,672 56,242
935 588/MISCELLANEOUS EXPENSES L 559 2,979,865 2,820,662 159,203
936 589/RENTS L 163 - - -
937 TOTAL DISTRIBUTION OPERATION 22,944,293 21,927,348 1,016,946
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 29 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
938***TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR"*'
939
940
941 590/SUPERVISION&ENGINEERING L163 7,755 7,396 359
942 591/STRUCTURES L 150 - - -
943 592/STATION EQUIPMENT L 151 3,271,354 3,138,143 133,210
9"593/OVERHEAD LINES L 153+154 5,418,492 5,032,733 385,759
945 594/UNDERGROUND LINES L155+156 311,063 306,329 4,734
946595/LINE TRANSFORMERS L157 24,796 23,436 1,360
947 596/STREET LIGHTING&SIGNAL SYSTEMS L 161 93,462 88,810 4,652
948 597/METERS L 159 769,699 746,131 23,568
949 598/MISCELLANEOUS PLANT L 163 105,914 101,008 4,905
950 TOTAL DISTRIBUTION MAINTENANCE 10,002,534 9,443,987 558,547
951 TOTAL DISTRIBUTION EXPENSES 32,946,827 31,371,335 1,575,493
952
953 CUSTOMER ACCOUNTING EXPENSES
954 901/SUPERVISION L 959 794,380 759,746 34,634
955 902/METER READING Cw902 1,260,207 1,090,088 170,120
956903/CUSTOMER RECORDS&COLLECTIONS CW903 10,577,395 10,231,412 345,983
957 904/UNCOLLECTIBLE ACCOUNTS CW904 - - -
958 905/MISC EXPENSES L 955-957 - - -
959 TOTAL CUSTOMER ACCOUNTING EXPENSES 12,631,982 12,081,246 550,736
960
961 CUSTOMER SERVICES&INFORMATION EXPENSES
962 907/SUPERVISION L 965 836,042 803,545 32,497
963 908/CUSTOMER ASSISTANCE L 573 5,242,141 5,038,379 203,762
964 909/INFORMATION&INSTRUCTIONAL L 574 - - -
965 910/MISCELLANEOUS EXPENSES L 963+964 384,926 369,964 14,962
966 TOTAL CUST SERV&INFORMATN EXPENSES 6,463,109 6,211,888 251,221
967
968 SALES EXPENSES
969 912/DEMO&SELLING EXPENSES L 579 - - -
970 TOTAL SALES EXPENSES - - -
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 30 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
971 "**TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
972
973 ADMINISTRATIVE&GENERAL EXPENSES
974 920/ADMINISTRATIVE&GENERAL SALARIES PTOCAS 58,534,056 56,026,787 2,507,269
975 921/OFFICE SUPPLIES PTDCAS 403,723 386,430 17,293
976 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR SUBEX - - -
977 923/OUTSIDE SERVICES PTOCAS - - -
978 924/PROPERTY INSURANCE
979 PRODUCTION-STEAM L 100 - - -
980 ALL RISK&MISCELLANEOUS P710P 426,708 409,500 17,208
981 TOTAL ACCOUNT 924
982
983 925/INJURIES&DAMAGES LABOR 146,518 140,242 6,276
984 926/EMPLOYEE PENSIONS&BENEFITS LABOR - - -
985 927/FRANCHISE REQUIREMENTS CIDA - - -
986 928/REGULATORY COMMISSION EXPENSES
987 FERC ADMIN ASSESSMENTS L 179 - - -
988 FERC RATE CASE EXPENSE RESREV - - -
989 SEC EXPENSES L 179 - - -
990 IDAHO PUC-RATE CASE CIDA - - -
991 -OTHER CIDA - - -
992 OREGON PUC-RATE CASE CODA - - -
993 -OTHER CODA - - -
994 TOTAL ACCOUNT 928
995
996 929/DUPLICATE CHARGES SUBEX - - -
997 930.1/GENERAL ADVERTISING RELAB - - -
998 930.2/MISCELLANEOUS EXPENSES PTOCAS 198,088 189,603 8,485
999 931/RENTS L 177 - - -
1000935/GENERAL PLANT MAINTENANCE P3908 1,228,809 1,176,596 52,212
1001 TOTAL ADMIN&GENERAL EXPENSES 60,937,902 58,329,159 2,608,743
1002 TOTAL OPER&MAINT EXPENSES 158,798,646 151,998,101 6,800,545
1003
1004 TOTAL LABOR-RATIO 1%) 1 1 0
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 31 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
1005"'`TABLE 14-ALLOCATION FACTORS
1006
1007 CAPACITY RELATED KW
1008 PRODUCTION RELATED COINCIDENT PEAKS @ GENERATION LEVE DIO 2,563,697 2,462,382 101,315
1009 SYSTEM TRANSMISSION SERVICE @ GENERATION LEVEL D11 2,563,697 2,462,382 101,315
1010 RETAIL TRANSMISSION D12 2,563,697 2,462,382 101,315
1011 DISTRIBUTION SERVICE @ GENERATION LEVEL D60 2,424,088 2,334,493 89,595
1012
1013 ENERGY RELATED MWH
1014 GENERATION LEVEL(PSP) E10 16,435,689 15,742,270 693,419
1015 RETAIL MWH AT GENERATION LVL E100 16,435,689 15,742,270 693,419
1016 CUSTOMER LEVEL E99 15,410,622 14,757,250 653,372
1017
1018 CUSTOMER RELATED FACTORS
1019 369-DIRECT ASSIGNMENT DA369 70,650,589 67,740,904 2,909,686
1020 370-METER INVESTMENT ACCT370 115,905,804 112,356,866 3,548,937
1021 902-CUSTOMER WEIGHTED CW902 2,122,543 1,836,014 286,529
1022 903-CUSTOMER WEIGHTED CW903 16,141,973 15,613,975 527,998
1023 904-CUSTOMER WEIGHTED CW904 3,786,792 3,419,345 367,446
1024 909-DIRECT ASSIGN-AVG.NO.CUST. DA909 624,419 604,506 19,913
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 32 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
1025-TABLE TABLE 14-ALLOCATION FACTORS
1026
1027 DIRECT ASSIGNMENTS
1028 252-CUSTOMER ADVANCES DA252 32,170,424 32,110,363 60,062
1029 350-LAND&LAND RIGHTS DA350 - - -
1030 352-STRUCTURES&IMPROVEMENTS DA352 658 - 658
1031 353-STATION EQUIPMENT DA353 111,594 75,100 36,494
1032 354-TOWERS&FIXTURES DA354 - - -
1033 355-POLES&FIXTURES DA355 33,842 - 33,842
1034 356-OVERHEAD CONDUCTORS&DEVICES DA356 26,495 1,189 25,306
1035 359-ROADS&TRAILS DA359 - - -
1036 360-LAND&LAND RIGHTS ACCT360 9,024,558 8,641,897 382,661
1037 361-STRUCTURES&IMPROVEMENTS ACCT361 62,286,419 59,574,241 2,712,178
1038 362-STATION EQUIPMENT ACCT362 333,778,528 320,186,976 13,591,552
1039 364-POLES,TOWERS&FIXTURES DA364 333,422,399 307,301,185 26,121,215
1040 365-OVERHEAD CONDUCTORS&DEVICES DA365 161,939,763 152,866,451 9,073,313
1041 366-UNDERGROUND CONDUIT DA366 55,753,674 54,858,172 895,502
1042 367-UNDERGROUND CONDUCTORS&DEVICES DA367 338,826,990 333,716,692 5,110,297
1043 368-LINE TRANSFORMERS ACCT368 750,275,508 709,131,796 41,143,712
1044 371-INSTALLATIONS ON CUSTOMER PREMISES DA371 5,271,974 4,926,363 345,611
1045 373-STREET LIGHTING SYSTEMS DA373 6,798,038 6,459,698 338,340
1046 451-REVENUE-MISCELLANEOUS SERVICE DA451 5,103,805 5,043,528 60,277
1047 454-REVENUE-FACILITIES CHARGE DA454 10,841,971 10,407,743 434,228
1048 908-OTHER CUSTOMER ASSISTANCE DA908 7,567,753 7,274,479 293,274
1049 440-RETAIL SALES REVENUE RETREV 1,283,843,868 1,230,016,095 53,827,773
1050 447-WHOLESALE SALES REVENUE RESREV - - -
1051 RIDER FUND DIRECT ASSIGNMENT DARIDER - - -
1052 411-BOARDMAN ARO ACCRETION EXP DAACCRETION 12,995 12,485 509
1053 403-BOARDMAN ARO DEPRECIATION EXP DAARO - - -
1054 IDAHO CIDA 1 1 -
1055 OREGON CODA 1 - 1
1056 NET TO GROSS TAX MULTIPLIER DA990 1 1 1
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 33 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOCI TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
1057—TABLE*TABLE 14-ALLOCATION FACTORS***
1058
1059 INTERNALLY DEVELOPED ALLOCATION FACTORS
1060 PLANT-PROD,TRANS&DIST PTO 6,383,232,307 6,112,007,526 271,224,781
1061 LAB-PROD,TRANS,DIST,CUSTACCT&CSIS PTDCAS 97,860,745 93,668,943 4,191,802
1062 PLANT-HYDRO,OTHER,TSUBS,DSUBS&GP P710P 3,040,787,236 2,918,158,498 122,628,738
1063 PLANT-GEN PLT(390,391,397&398) P3908 323,809,073 310,050,362 13,758,710
1064 PLANT-PROD,TRANS,DIST&GEN P1o1P 6,953,883,405 6,658,411,548 295,471,857
1065 O&M-PROD,TRANS,DIST,CUSTACCT&CSIS SUBEx 739,874,789 706,025,109 33,849,680
1066 LAB-PROD,TRANS,DIST,CUSTACCT&CSIS RELAB 97,860,745 93,668,943 4,191,802
1067 LAB-ALL LABOR WITHOUT925-6"CIRC" LABOR 158,225,421 151,448,360 6,777,061
1068 REV-RETAIL,RESALE&WHEELING FMREV 1,323,721,019 1,268,234,028 55,486,991
1069 O&M-ALL EXCEPT FUEL O&MM 745,935,548 712,456,451 33,479,097
1070 PLANT-89%*HYD PROD+II%*TRANS SURVEY 1,241,099,140 1,192,042,026 49,057,114
1071 O&M-TOTAL(NOT USED) OM401 934,441,471 893,018,187 41,423,284
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 34 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
1072***TABLE 15-ALLOCATION FACTORS-RATIOS
1073
1074 CAPACITY RELATED KW
1075 PRODUCTION RELATED COINCIDENT PEAKS @ GENERATION LEVE D10 100.00% 96.05% 3.95%
1076 SYSTEM TRANSMISSION SERVICE @ GENERATION LEVEL D11 100.00% 96.05% 3.95%
1077 RETAIL TRANSMISSION D12 100.00% 96.05% 3.95%
1078 DISTRIBUTION SERVICE @ GENERATION LEVEL D60 100.00% 96.30% 3.70%
1079
1080 ENERGY RELATED MWH
1081 GENERATION LEVEL(PSP) E10 100.00% 95.78% 4.22%
1082 RETAIL MWH AT GENERATION LVL E100 100.00% 95.78% 4.22%
1083 CUSTOMER LEVEL E99 100.00% 95.76% 4.24%
1084
1085 CUSTOMER RELATED FACTORS
1086 369-DIRECT ASSIGNMENT DA369 100.00% 95.88% 4.12%
1087 370-METER INVESTMENT ACCT370 100.00% 96.94% 3.06%
1088 902-CUSTOMER WEIGHTED CW902 100.00% 86.50% 13.50%
1089 903-CUSTOMER WEIGHTED CW903 100.00% 96.73% 3.27%
1090 904-CUSTOMER WEIGHTED CW904 100.00% 90.30% 9.70%
1091 909-DIRECT ASSIGN-AVG.NO.CUST. DA909 100.00% 96.81% 3.19%
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 35 of 37

I IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
1092-TABLE*TABLE 15-ALLOCATION FACTORS-RATIOS,.`
1093
1094 DIRECT ASSIGNMENTS
1095 252-CUSTOMER ADVANCES DA252 100.00% 99.81% 0.19%
1096 350-LAND&LAND RIGHTS DA350 #DIV/01 #DIV/0I #DIV/01
1097 352-STRUCTURES&IMPROVEMENTS DA352 100.00% 0.00% 100.00%
1098 353-STATION EQUIPMENT DA353 100.00% 67.30% 32.70%
1099 354-TOWERS&FIXTURES DA354 #DIV/01 #DIV/0I #DIV/01
1100 355-POLES&FIXTURES DA355 100.00% 0.00% 100.00%
1101 356-OVERHEAD CONDUCTORS&DEVICES DA356 100.00% 4.49% 95.51%
1102 359-ROADS&TRAILS DA359 #DIV/01 #DIV/0I #DIV/01
1103 360-LAND&LAND RIGHTS ACCT360 100.00% 95.76% 4.24%
1104 361-STRUCTURES&IMPROVEMENTS ACCT361 100.00% 95.65% 4.35%
1105 362-STATION EQUIPMENT ACCT362 100.00% 95.93% 4.07%
1106 364-POLES,TOWERS&FIXTURES DA364 100.00% 92.17% 7.83%
1107 365-OVERHEAD CONDUCTORS&DEVICES DA365 100.00% 94.40% 5.60%
1108 366-UNDERGROUND CONDUIT DA366 100.00% 98.39% 1.61%
1109 367-UNDERGROUND CONDUCTORS&DEVICES DA367 100.00% 98.49% 1.51%
1110 368-LINE TRANSFORMERS ACCT368 100.00% 94.52% 5.48%
1111 371-INSTALLATIONS ON CUSTOMER PREMISES DA371 100.00% 93.44% 6.56%
1112 373-STREET LIGHTING SYSTEMS DA373 100.00% 95.02% 4.98%
1113 451-REVENUE-MISCELLANEOUS SERVICE DA451 100.00% 98.82% 1.18%
1114 454-REVENUE-FACILITIES CHARGE DA454 100.00% 95.99% 4.01%
1115 908-OTHER CUSTOMER ASSISTANCE DA908 100.00% 96.12% 3.88%
1116 440-RETAIL SALES REVENUE RETREV 100.00% 95.81% 4.19%
1117 447-WHOLESALE SALES REVENUE RESREV #DIV/01 #DIV/0I #DIV/01
1118 IDAHO CIDA 100.00% 100.00% 0.00%
1119 OREGON CODA 100.00% 0.00% 100.00%
1120 NET TO GROSS TAX MULTIPLIER DA990 1.347 1.347 1.347
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 36 of 37

1 IDAHO POWER COMPANY
2 BEFORE THE OREGON PUBLIC UTILITY COMMISSION-TYPE I&II
3 JURISDICTIONAL SEPARATION STUDY
4 TWELVE MONTHS ENDED 12/31/2024
5
6
7 ALLOC/ TOTAL IDAHO OREGON
8 DESCRIPTION SOURCE SYSTEM IPUC OPUC
1121 ***TABLE 15-ALLOCATION FACTORS-RATIOS
1122
1123 INTERNALLY DEVELOPED ALLOCATION FACTORS
1124 PLANT-PROD,TRANS&DIST PTD 100.00% 95.75% 4.25%
1125 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS PTDCAS 100.00% 95.72% 4.28%
1126 PLANT-HYDRO,OTHER,TSUBS,DSUBS&GP P110P 100.00% 95.97% 4.03%
1127 PLANT-GEN PLT(390,391,397&398) P3908 100.00% 95.75% 4.25%
1128 PLANT-PROD,TRANS,DIST&GEN P101P 100.00% 95.75% 4.25%
1129 O&M-PROD,TRANS,DIST,CUSTACCT&CSIS SUBEX 100.00% 95.42% 4.58%
1130 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS RELAB 100.00% 95.72% 4.28%
1131 LAB-ALL LABOR WITHOUT 925-6 'CIRC" LABOR 100.00% 95.72% 4.28%
1132 REV-RETAIL,RESALE&WHEELING FMREV 100.00% 95.81% 4.19%
1133 O&M-ALL EXCEPT FUEL O&M M 100.00% 95.51% 4.49%
1134 PLANT-89%*HYD PROD+11%*TRANS SURVEY 100.00% 96.05% 3.95%
1135 O&M-TOTAL(NOT USED) OM401 100.00% 95.57% 4.43%
Exhibit No. 6
Case No. IPC-E-24-07
M. Larkin, IPC
2024 Increment Page 37 of 37

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-24-07
IDAHO POWER COMPANY
LARKIN , DI
TESTIMONY
EXHIBIT NO. 7

IDAHO POWER COMPANY
INCREMENTAL ELECTRIC PLANT IN SERVICE
December 31, 2024
Account Description 2023 GRC Settled Dec 2024 Balance Incremental EPIS
301 Organization 5,703.01 5,703.01 0.00
302 Franchises and Consents 52,690,323.89 67,759,450.41 15,069,126.52
303 Miscellaneous Intangible Plant 52,524,883.01 75,434,751.62 22,909,868.62
TOTAL INTANGIBLE PLANT 105,220,909.91 143,199,905.04 37,978,995.13
310 Land and Land Rights 347,595.67
311 Structures and Improvements 37,303,704.94
312 Boiler Plant Equipment 185,403,956.25
314 Turbogenerator Units 56,378,666.21
315 Accessory electric Equipment 16,473,701.28
316 Misc Power Plant Equipment 8,423,945.60
TOTAL STEAM PRODUCTION PLANT 274,155,558 304,331,569.95 30,176,012.00
330 Land and Land Rights 31,696,880.98
331 Structures and Improvements 297,845,397.13
332 Reservoirs, Dams, Waterways 317,158,044.63
333 Waterwheel, Turbines, Generato 423,900,667.59
334 Accessory Electric Equipment 78,247,063.33
335 Misc Power Plant Equipment 34,161,516.98
336 Roads, Railroads and Bridges 20,628,658.86
TOTAL HYDRO PRODUCTION PLANT 1,092,528,822 1,203,638,229.50 111,109,407.39
340 LAND AND LAND RIGHTS 2,699,793.95
341 Structures and Improvements 157,205,257.97
342 Fuel Holders, Producers, Acces 10,416,686.06
343 Prime Movers 293,488,715.33
344 Generators 67,698,206.49
345 Accessory Electric Equipment 94,132,712.68
346 Misc Power Plant Equipment 7,985,361.28
TOTAL OTHER PRODUCTION PLANT 625,844,417 633,626,733.76 7,782,316.76
3501X Land 4,328,646.72
35020 Land Rights and Easements 41,039,057 39,138,710.42 3,823,203.69
35022 Transm ROW Renewal Cost 1,394,903.80
352 Structures and Improvements 100,562,285 109,288,682.47 8,726,397.74
353 Station Equipment 468,500,193 507,541,457.65 39,041,265.10
354 Towers and Fixtures 237,158,275 254,182,187.22 17,023,911.98
355 Poles and Fixtures 236,066,559 271,608,628.69 35,542,070.09
356 Overhead Conductors, Devices 271,757,281 292,997,097.29 21,239,816.10
359 Roads and Trails 390,266 405,090.98 14,824.80
TOTAL TRANSMISSION PLANT 1,355,473,916 1,480,885,405.25 125,411,489.51
360 Land and Land Rights 9,601,720 10,392,399.49 790,679.41
361 Structures and improvements 62,384,614 73,907,861.51 11,523,247.16
362 Station Equipment 343,076,495 370,688,639.07 27,612,143.60
TOTAL SUBSTATION EQUIPMENT 415,062,830 454,988,900.07 39,926,070.17
363 Storage Battery Equipment 112,074,984 367,353,311.98 255,278,328.33
TOTAL STORAGE BATTERY EQUIPMENT
364 Poles, Towers and Fixtures 334,235,525 367,617,271.69 33,381,746.58
365 Overhead Conductors, Devices 162,758,591 173,759,820.73 11,001,229.42
366 Underground Conduit 54,848,113 61,422,626.86 6,574 14
�h14.ibit 7
Case No.IPC-E-24-07
M.Larkin, IPC
Page 1 of 2

367 Underground Conductors, Device 338,877,918 385,122,437.95 46,244,519.88
368 Line Transformers 745,644,817 819,847,335.92 74,202,519.29
369 Services 69,707,265 73,940,381.53 4,233,116.89
37000 Meters 20,114,093.15
37010 Meters-AM 116,503,219 105,259,706.82 8,870,580.99
371 Installations, Cust Premises 4,646,860 5,878,905.03 1,232,045.35
373 Street Lighting, Signal System 6,313,711 7,136,611.15 822,900.13
TOTAL DISTRIBUTION LINES 1,833,536,018 2,020,099,190.82 186,563,172.67
389 Land and Land Rights 20,940,797 21,077,173.52 136,376.58
390 Structures and Improvements 170,196,006 187,603,356.39 17,407,350.64
391 Office Furniture, Equipment 41,438,522 45,895,872.77 4,457,350.41
392 Transportation Equipment 119,914,591 146,232,891.07 26,318,299.96
393 Stores Equipment 5,476,857 8,997,577.75 3,520,720.79
394 Tools, Shop, Garage Equipment 15,380,479 16,583,328.91 1,202,850.02
395 Laboratory Equipment 14,914,034 16,747,259.21 1,833,225.66
396 Power Operated Equipment 27,588,092 31,516,343.02 3,928,251.12
397 Communication Equipment 82,670,542 89,930,528.21 7,259,986.61
398 Miscellaneous Equipment 11,406,368 11,482,711.48 76,343.94
TOTAL GENERAL EQUIPMENT PLANT 509,926,287 576,067,042.33 66,140,755.74
SUBTOTAL W/O ARO 6,323,823,741 7,184,190,288.70 860,366,548
Exhibit No.7
Case No.IPC-E-24-07
M.Larkin, IPC
Page 2 of 2

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-24-07
IDAHO POWER COMPANY
LARKIN , DI
TESTIMONY
EXHIBIT NO. 8

Incremental Labor Determination
Total2024 2023 2024
FERC Account Account Description O&M Labor Settlement Incremental
500001 Opr Pwr Prd Stm Gnr S&e-bridge - 11,455 (11,455)
500002 Opr Pwr Prd Stm Gnr S&e-board 119,076 96,745 22,331
500003 Opr Pwr Prd Stm Gnr S&e-valmy - 7,163 (7,163)
506003 Opr Pwr Prd Stm Gnr Msc-valmy - 139 (139)
535000 Opr Pwr Prd Hyd Pwr Gnr S&e 5,071,877 4,956,942 114,935
536000 Opr Pwr Prd Hyd Pwr Gnr Wtr Fp 177,428 176,702 726
536001 Opr Pwr Prd Hyd Cloudseeding 851,772 854,383 (2,611)
537000 Opr Pwr Prd Hyd Pwr Gnr Hyd 7,921,204 7,443,522 477,683
538000 Opr Pwr Prd Hyd Pwr Gnr El PI 2,043,598 1,801,400 242,198
539000 Opr Pwr Prd Hyd Pwr Gnr Misc 4,512,124 4,022,565 489,559
541000 Mnt Pwr Prd Hyd Pwr Gnr S&e 203,078 104,038 99,040
542000 Mnt Pwr Prd Hyd Pwr Gnr Strc 695,374 689,550 5,823
543000 Mnt Pwr Prd Hyd Pwr Gnr 388,415 302,571 85,844
544000 Mnt Pwr Prd Hyd Pwr Gnr El PI 2,091,697 2,105,412 (13,715)
545000 Mnt Pwr Prd Hyd Pwr Gnr Msc PI 2,790,986 2,619,430 171,556
546000 Opr Pwr Prd Othr Pwr Gnr S&e 709,301 609,948 99,353
548000 Opr Pwr Prd Othr Gnr 4,179,990 3,738,956 441,033
549000 Opr Pwr Prd Othr Gnr Msc 603,657 431,985 171,671
552000 Mnt Pwr Prd Othr Pwr Strc 57,499 53,429 4,070
553000 Mnt Pwr Prd Othr Pwr Gnr Gn&el 74,475 69,314 5,162
554000 Mnt Pwr Prd Oth Pwr Msc 613,733 554,042 59,691
557000 Opr Pwr Prd Oth Pwr Sp Oth Prd 5,816,830 5,226,939 589,891
560000 Opr Trns S&e 2,780,515 2,777,635 2,879
561200 Opr Trns-Load Dsptch-Monitor 3,373,046 2,842,838 530,207
561300 Opr Trns-Load Dsptch-Svc/Schd 435,990 536,073 (100,083)
561700 Opr Trns-Gen Intercnct Study 266,712 157,119 109,593
562000 Opr Trns Station Expenses 2,331,939 2,272,101 59,838
563000 Opr Trns Overhead Lines 603,510 505,284 98,225
568000 Mnt Trns S&e-mnt Trns S 170,055 105,816 64,239
569100 Mnt Trns Computer Hardware 25,156 28,021 (2,864)
569200 Mnt Trns Computer Software 1,678,905 1,637,358 41,547
569300 Mnt Trns-Comm Equipment 5,715 6,388 (673)
570000 Mnt Trns St Equp 3,171,421 2,720,699 450,722
571000 Maint Trans O/h Lines 1,315,416 1,048,408 267,008
573000 Mnt Trns Msc PI-other 1,337 4,259 (2,922)
580000 Opr Dstr Super&Engineering 3,923,571 3,522,183 401,388
581000 Opr Dstr Load Dispatching 6,258,508 5,395,277 863,231
582000 Opr Dstr Station Expenses 1,248,745 1,150,537 98,208
583000 Opr Dstr Overhead Line Exp 4,250,710 4,042,871 207,838
584000 Opr Dstr Undgrnd Ln Exp 1,912,171 1,551,681 360,490
585000 Opr Dstr Str Lt&Sgnl 2,392 24,691 (22,299)
586000 Opr Dstr Mtr Exp 5,705,346 4,843,487 861,859
587000 Opr Dstr Cust Installation 1,030,587 864,599 165,988
588000 Opr Dstr Msc Exp 3,629,610 3,430,741 198,869
590000 Mnt Dstr S&e 9,340 11,002 (1,662)
592000 Mnt Dstr St Equp 3,997,555 3,164,754 832,801
593000 Mnt Dstr Overhead Lines 6,736,276 6,239,308 496,969
594000 Mnt Dstr Underground Lines 442,387 427,358 15,029
595000 Mnt Dstr Ln Trnsfmrs 29,751 29,370 381
596000 Mnt Dstr Street Light&Signal 115,383 148,234 (32,851)1 Exhibit No. 8
Case No. IPC-E-24-07
M. Larkin, IPC
Page 1 of 2

Incremental Labor Determination
Total 2024 2023 2024
FERC Account Account Description O&M Labor Settlement Incremental
597000 Mnt Dstr Mtrs 935,752 795,630 140,121
598000 Mnt Dstr Msc-nt Grd Lt 128,594 95,035 33,559
901000 Opr Cust Acts&Sry Exp-spivs 949,406 834,306 115,100
902000 Opr Cust Acts&Sry Mtr Rdng 1,519,698 1,492,691 27,007
903000 Opr Cust Records&Coll Exp 11,910,965 10,740,459 1,170,506
907000 Opr Cust Srv-supervision 998,447 969,984 28,463
908000 Opr Cust Srv-cust Assist Exp 1.) 10,247,639 8,975,081 1,272,558
910000 Opr Cust Sry&Info 464,445 367,037 97,408
920000 Opr Admin&General Salaries 79,606,390 72,382,948 7,223,442
920001 Incentive 10,845,454 10,040,205 805,249
921000 Opr A&G Office Supp&Exp 11,118 290 10,828
921002 Opr A&g-Airplane Clearing 517,689 298,125 219,564
922999 P/r Bene Trnsfrd-cr (46,062,855) (36,723,488) (9,339,367)
924000 Opr A&g Prpty Ins-other 514,241 447,587 66,654
925000 Opr A&g Injrs&Dmgs 176,557 157,805 18,752
926104 Opr A&g Emp Pen&Ben-awrd/gft 509,793 549,591 (39,798)
926110 Opr A&g Emp Pen&Ben-If Ins (652,946) (836,860) 183,914
926111 Opr A&g Emp Pen&Ben-ret Life 230,484 82,292 148,193
926112 Opr A&g-emp Pen&Ben-tuition 67,347 83,093 (15,747)
926113 OprA&g-emp Pen&Ben-Med-Ibnr 707,608 536,000 171,608
926114 OprA&g-emp Pen&Ben-Den-Ibnr 5,113 (24,632) 29,746
926118 OPR A&G EMP PEN&BEN-HSA EC 2,034,807 1,922,771 112,036
926119 OPR A&G EMP PEN&BEN-VISION 318,570 192,953 125,617
926120 OprA&g Emp Pen&Ben-medical 25,312,720 21,319,943 3,992,776
926122 OprA&g Emp Pen&Ben-ret Med 1,868,931 521,152 1,347,779
926130 OprA&g Emp Pen&Ben-disablty 1,063,523 466,608 596,915
926141 OprA&g Emp Pen&Benefits-esp 10,624,980 9,186,078 1,438,901
926150 OprA&g Emp Pen&Ben-dental 1,873,910 1,845,528 28,382
926151 Opr A&g Emp Pen&Ben-ret Den 510,824 229,467 281,357
926160 OprA&G Emp Pen&Ben-Fbap Adm 22,046 21,873 173
926180 Opr A&g Emp Pen&Ben-asst Pg 139,059 129,978 9,081
930200 OprA&g Msc Gnrl Exp 219,173 231,349 (12,177)
935000 MntA&g General Plant 1,486,545 1 1,227,049 1 259,496
Grand Total 213,480,186 1 193,922,651 1 19,557,535
1.)Added 2023 DSM labor charged to 254201 Idaho EE Rider account to appropriately allocate 2024 O&M
labor that includes DSM labor formerly charged to the Rider.
Exhibit No. 8
Case No. IPC-E-24-07
M. Larkin, IPC
Page 2of2

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-24-07
IDAHO POWER COMPANY
LARKIN , DI
TESTIMONY
EXHIBIT NO. 9

IDAHO POWER COMPANY
INCREMENTAL REVENUE ASSOCIATED WITH LOAD GROWTH
2023 ID kWh Sales
14,907,835,244
Mill Rate (Rate Base and Labor Only Rev Reg/Sales)
0.0440775
Incremental 2024 ID kWh Sales
124,724,470
Incremental 2024 Revenues
$ 5,497,548
Exhibit No. 9
Case No. IPC-E-24-07
M. Larkin, IPC
Page 1 of 1

BEFORE THE
IDAHO PUBLIC UTILITIES COMMISSION
CASE NO. IPC-E-24-07
IDAHO POWER COMPANY
LARKIN , DI
TESTIMONY
EXHIBIT NO. 10

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
1
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 763,200,310 730,792,519 32,407,792
7
8 OPERATING REVENUES
9 FIRM JURISDICTIONAL SALES 5,497,548 5,497,548 0
10 SYSTEM OPPORTUNITY SALES 0 0 0
11 OTHER OPERATING REVENUES 0 0 0
12 TOTAL OPERATING REVENUES 5,497,548 5,497,548 0
13 OPERATING EXPENSES
14 OPERATION&MAINTENANCE EXPENSES 19,557,535 18,759,267 798,267
15 DEPRECIATION EXPENSE 21,088,273 20,210,085 878,189
16 AMORTIZATION OF LIMITED TERM PLANT 2,265,315 2,169,836 95,479
17 TAXES OTHER THAN INCOME 0 0 0
18 REGULATORY DEBITS/CREDITS 0 0 0
19 PROVISION FOR DEFERRED INCOME TAXES 3,173,455 3,039,028 134,427
20 INVESTMENT TAX CREDIT ADJUSTMENT 73,978,000 70,844,300 3,133,700
21 FEDERAL INCOME TAXES (82,058,780) (78,545,328) (3,513,452)
22 STATE INCOME TAXES (10,668,322) (10,205,030) (463,292)
23 TOTAL OPERATING EXPENSES 27,335,476 26,272,158 1,063,317
24 OPERATING INCOME (21,837,928) (20,774,610) (1,063,317)
25 ADD: IERCO OPERATING INCOME 0 0 0
26 CONSOLIDATED OPERATING INCOME (21,837,928) (20,774,610) (1,063,317)
27 RATE OF RETURN UNDER PRESENT RATES -2.86% -2.84% -3.28%
28
29 DEVELOPMENT OF REVENUE REQUIREMENTS
30 RATE OF RETURN @ 9.6%ROE 7.247% 7.247% 7.247%
31
32 RETURN 55,309,127 52,960,534 2,348,593
33 EARNINGS DEFICIENCY 77,147,054 73,735,144 3,411,910
34 ADD:CWIP (HELLS CANYON RELICENSING) D10 0 0 0
35 EARNINGS DEFICIENCY WITH CWIP 77,147,054 73,735,144 3,411,910
36
37 NET-TO-GROSS TAX MULTIPLIER 1.347 1.347 1.347
38 REVENUE DEFICIENCY 103,887,766 99,293,220 4,594,546
39
40 ADD:VALMY REVENUE REQUIREMENT CIDA 0 0 0
41 ADD:BRIDGER REVENUE REQUIREMENT CIDA 0 0 0
42 LESS:BATTERY ADITC MITIGATION CIDA 0 0 0
43 REVENUE DEFICIENCY LESS ADJUSTMENTS 103,887,766 99,293,220 4,594,546
44
45
46
47
48
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Pagel of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
49 SUMMARY OF RESULTS
50 DEVELOPMENT OF RATE BASE COMPONENTS
51 ELECTRIC PLANT IN SERVICE
52 INTANGIBLE PLANT 37,978,995 36,393,810 1,585,185
53 PRODUCTION PLANT 149,067,736 142,986,714 6,081,022
54 TRANSMISSION PLANT 125,411,490 120,295,493 5,115,997
55 DISTRIBUTION PLANT 481,767,571 460,930,056 20,837,515
56 GENERAL PLANT 66,140,756 63,339,040 2,801,715
57 TOTAL ELECTRIC PLANT IN SERVICE 860,366,548 823,945,114 36,421,434
58 LESS:ACCUM PROVISION FOR DEPRECIATION 88,598,095 84,945,117 3,652,978
59 AMORT OF OTHER UTILITY PLANT 5,394,687 5,168,451 226,237
60 NET ELECTRIC PLANT IN SERVICE 766,373,765 733,831,546 32,542,219
61 LESS:CUSTOMER ADV FOR CONSTRUCTION 0 0 0
62 LESS:ACCUM DEFERRED INCOME TAXES 3,173,455 3,039,028 134,427
63 ADD:PLT HLD FOR FUTURE+ACQUIS ADJ 0 0 0
64 ADD:WORKING CAPITAL 0 0 0
65 ADD:CONSERVATION+OTHER DFRD PROG. 0 0 0
66 ADD:SUBSIDIARY RATE BASE 0 0 0
67 TOTAL COMBINED RATE BASE 763,200,310 730,792,519 32,407,792
68
69 DEVELOPMENT OF NET INCOME COMPONENTS
70 OPERATING REVENUES
71 SALES REVENUES 5,497,548 5,497,548 0
72 OTHER OPERATING REVENUES 0 0 0
73 TOTAL OPERATING REVENUES 5,497,548 5,497,548 0
74 OPERATING EXPENSES
75 OPERATION&MAINTENANCE EXPENSES 19,557,535 18,759,267 798,267
76 DEPRECIATION EXPENSE 21,088,273 20,210,085 878,189
77 AMORTIZATION OF LIMITED TERM PLANT 2,265,315 2,169,836 95,479
78 TAXES OTHER THAN INCOME 0 0 0
79 REGULATORY DEBITS/CREDITS 0 0 0
80 PROVISION FOR DEFERRED INCOME TAXES 3,173,455 3,039,028 134,427
81 INVESTMENT TAX CREDIT ADJUSTMENT 73,978,000 70,844,300 3,133,700
82 FEDERAL INCOME TAXES (82,058,780) (78,545,328) (3,513,452)
83 STATE INCOME TAXES (10,668,322) (10,205,030) (463,292)
84 TOTAL OPERATING EXPENSES 27,335,476 26,272,158 1,063,317
85 OPERATING INCOME (21,837,928) (20,774,610) (1,063,317)
86 ADD: IERCO OPERATING INCOME E10 0 0 0
87 CONSOLIDATED OPERATING INCOME (21,837,928) (20,774,610) (1,063,317)
88
89 NET POWER SUPPLY COSTS:
90 ACCT447/SURPLUS SALES 0 0 0
91 ACCT 501/FUEL-THERMAL PLANTS 0 0 0
92 ACCT 547/FUEL-OTHER 0 0 0
93 ACCT 555/NON-FIRM PURCHASES 0 0 0
94 ACCT 555/DEMAND RESPONSE INCENTIVE 0 0 0
95 ACCT 555/CSPP PURCHASES 0 0 0
96 SUBTOTAL 0 0 0
97 ACCT 536/WATER FOR POWER(PCA&OTHER) 0 0 0
98 ACCT 565/TRANS OF ELECTRICTY BY OTHERS 0 0 0
99 TOTAL NET POWER SUPPLY COSTS 0 0 0
100 OTHER O&M Exhibit No.10
101 TOTAL O&M EXPENSES 19,557,535 18,759,267 798,267 Case No.IPC-E-24-07
102 LESS: ACCT 501/FUEL-THERMAL PLANTS 0 0 0 M.Larkin,IPC
2024 Page 2 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
103 ACCT 547/FUEL-OTHER 0 0 0
104 ACCT 555/NON-FIRM PURCHASES 0 0 0
105 ACCT 555/DEMAND RESPONSE INCENTIVE 0 0 0
106 ACCT 555/CSPP PURCHASES 0 0 0
107 SUBTOTAL 19,557,535 18,759,267 798,267
108 ACCT 536/WATER FOR POWER(PCA&OTHER) 0 0 0
109 ACCT 565/TRANS OF ELECTRICTY BY OTHERS 0 0 0
110 ACCT416/MERCHANDISING EXPENSE 0 0 0
111 NET OTHER O&M 19,557,535 18,759,267 798,267
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 3 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
112 TABLE 1-ELECTRIC PLANT/N SERVICE (386,020,032)
113 INTANGIBLE PLANT
114 301-ORGANIZATION P101 P $ - 0 0
115 302-FRANCHISES&CONSENTS D10 15,069,127 14,454,401 614,725
116 303-MISCELLANEOUS P101 P 22,909,869 21,939,409 970,460
117
118 TOTAL INTANGIBLE PLANT 37,978,995 36,393,810 1,585,185
119
120 PRODUCTION PLANT
121 310-316/STEAM PRODUCTION D10 30,176,012 28,945,021 1,230,991
122 330-336/HYDRAULIC PRODUCTION D10 111,109,407 106,576,845 4,532,562
123 340-346/OTHER PRODUCTION-BASE LOAD D10 5,460,179 5,237,439 222,741
124 340-346/OTHER PRODUCTION-PEAKERS D10 2,322,137 2,227,409 94,729
125
126 TOTAL PRODUCTION PLANT 149,067,736 142,986,714 6,081,022
127
128 TRANSMISSION PLANT
129 350/LAND&LAND RIGHTS-SYSTEM SERVICE D11 3,823,204 3,667,241 155,963
130 DIRECT ASSIGNMENT DA350 0 0 0
131 TOTAL ACCOUNT 350 3,823,204 3,667,241 155,963
132
133 352/STRUCTURES&IMPROVEMENTS-SYSTEM SERVICE D11 8,726,398 8,370,416 355,982
134 DIRECT ASSIGNMENT DA352 0 0 0
135 TOTAL ACCOUNT 352 8,726,398 8,370,416 355,982
136
137 353/STATION EQUIPMENT-SYSTEM SERVICE D11 39,041,265 37,448,628 1,592,637
138 DIRECT ASSIGNMENT DA353 0 0 0
139 TOTAL ACCOUNT 353 39,041,265 37,448,628 1,592,637
140
141 354/TOWERS&FIXTURES-SYSTEM SERVICE D11 17,023,912 16,329,444 694,468
142 DIRECT ASSIGNMENT DA354 0 0 0
143 TOTAL ACCOUNT 354 17,023,912 16,329,444 694,468
144
145 355/POLES&FIXTURES-SYSTEM SERVICE D11 35,542,070 34,092,178 1,449,892
146 DIRECT ASSIGNMENT DA355 0 0 0
147 TOTAL ACCOUNT 355 35,542,070 34,092,178 1,449,892
148
149 356/OVERHEAD CONDUCTORS&DEVICES-SYSTEM SERVICE D11 21,239,816 20,373,366 866,450
150 DIRECT ASSIGNMENT DA356 0 0 0
151 TOTAL ACCOUNT 356 21,239,816 20,373,366 866,450
152
153 359/ROADS&TRAILS-SYSTEM SERVICE D11 14,825 14,220 605
154 DIRECT ASSIGNMENT DA359 0 0 0
155 TOTAL ACCOUNT 359 14,825 14,220 605
156
157 TOTAL TRANSMISSION PLANT 125,411,490 120,295,493 5,115,997
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 4 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
158 TABLE 1-ELECTRIC PLANT/N SERVICE
159
160 DISTRIBUTION PLANT
161 360/LAND&LAND RIGHTS-SYSTEM SERVICE ACCT360 790,679 763,476 27,203
162 PLUS:ADJUSTMENT FOR CIAC ACCT360CIAC 0 0 0
163 DISTRIBUTION PLANT+CIAC 790,679 763,476 27,203
164
165 361/STRUCTURES&IMPROVEMENTS-SYSTEM SERVICE ACCT361 11,523,247 10,978,691 544,557
166 PLUS:ADJUSTMENT FOR CIAC ACCT361CIAC 0 0 0
167 DISTRIBUTION PLANT+CIAC 11,523,247 10,978,691 544,557
168
169 362/STATION EQUIPMENT-SYSTEM SERVICE ACCT362 27,612,144 26,449,129 1,163,015
170 PLUS:ADJUSTMENT FOR CIAC ACCT362CIAC 0 0 0
171 DISTRIBUTION PLANT+CIAC 27,612,144 26,449,129 1,163,015
172
173 363/STORAGE BATTERY EQUIPMENT D10 255,278,328 244,864,585 10,413,743
174 TOTAL BATTERY STORAGE EQUIPMENT 255,278,328 244,864,585 10,413,743
175
176 364/POLES,TOWERS&FIXTURES DA364 33,381,747 30,775,202 2,606,544
177 365/OVERHEAD CONDUCTORS&DEVICES DA365 11,001,229 10,372,809 628,420
178 366/UNDERGROUND CONDUIT DA366 6,574,514 6,471,533 102,981
179 367/UNDERGROUND CONDUCTORS&DEVICES DA367 46,244,520 45,557,642 686,878
180 368/LINE TRANSFORMERS DA368 74,202,519 70,108,375 4,094,144
181 369/SERVICES DA369 4,233,117 4,067,481 165,636
182 370/METERS DA370 8,870,581 8,584,046 286,535
183 371/INSTALLATIONS ON CUSTOMER PREMISES DA371 1,232,045 1,147,044 85,001
184 373/STREET LIGHTING SYSTEMS DA373 822,900 790,042 32,858
185
186 TOTAL DISTRIBUTION PLANT(without CIAC) 481,767,571 460,930,056 20,837,515
187
188 GENERALPLANT
189 389/LAND&LAND RIGHTS PTD 136,377 130,600 5,777
190 390/STRUCTURES&IMPROVEMENTS PTD 17,407,351 16,669,977 737,374
191 391/OFFICE FURNITURE&EQUIPMENT PTD 4,457,350 4,268,538 188,813
192 392/TRANSPORTATION EQUIPMENT PTD 26,318,300 25,203,460 1,114,840
193 393/STORES EQUIPMENT PTD 3,520,721 3,371,583 149,137
194 394/TOOLS,SHOP&GARAGE EQUIPMENT PTD 1,202,850 1,151,897 50,953
195 395/LABORATORY EQUIPMENT PTD 1,833,226 1,755,570 77,655
196 396/POWER OPERATED EQUIPMENT PTD 3,928,251 3,761,851 166,400
197 397/COMMUNICATIONS EQUIPMENT PTD 7,259,987 6,952,454 307,532
198 398/MISCELLANEOUS EQUIPMENT PTD 76,344 73,110 3,234
199
200 TOTAL GENERAL PLANT 66,140,756 63,339,040 2,801,715
201
202 TOTAL ELECTRIC PLANT IN SERVICE(without CIAC) 860,366,548 823,945,114 36,421,434
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 5 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
203 TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION
204
205 PRODUCTION PLANT
206 310-316/STEAM PRODUCTION L 121 38,829,782 37,245,772 1,584,010
207 330-336/HYDRAULIC PRODUCTION L 122 23,502,564 22,543,808 958,756
208 340-346/OTHER PRODUCTION-BASE LOAD L 123 (9,142,916) (8,769,943) (372,973)
209 340-346/OTHER PRODUCTION-PEAKERS L 124 (3,888,354) (3,729,733) (158,620)
210 TOTAL PRODUCTION PLANT 49,301,076 47,289,903 2,011,172
211
212 TRANSMISSION PLANT
213 350/LAND&LAND RIGHTS L 131 438,309 420,429 17,880
214 352/STRUCTURES&IMPROVEMENTS L 135 1,119,495 1,073,827 45,668
215 353/STATION EQUIPMENT L 139 914,188 876,895 37,293
216 354/TOWERS&FIXTURES L 143 2,162,756 2,074,529 88,227
217 355/POLES&FIXTURES L 147 1,282,452 1,230,137 52,316
218 356/OVERHEAD CONDUCTORS&DEVICES L 151 (643,591) (617,336) (26,254)
219 359/ROADS&TRAILS L 155 2,744 2,632 112
220 TOTAL TRANSMISSION PLANT 5,276,353 5,061,111 215,242
221
222 DISTRIBUTION PLANT
223 360/LAND&LAND RIGHTS L 161 28,342 27,367 975
224 361/STRUCTURES&IMPROVEMENTS L 165 822,436 783,570 38,866
225 362/STATION EQUIPMENT L 169 3,129,730 2,997,907 131,823
226 363/STORAGE BATTERY EQUIPMENT L 173 5,219,455 5,006,534 212,921
227 364/POLES,TOWERS&FIXTURES L 176 1,173,924 1,082,261 91,663
228 365/OVERHEAD CONDUCTORS&DEVICES L 177 1,099,933 1,037,102 62,831
229 366/UNDERGROUND CONDUIT L 178 468,344 461,008 7,336
230 367/UNDERGROUND CONDUCTORS&DEVICES L 179 3,574,819 3,521,721 53,097
231 368/LINE TRANSFORMERS L 180 5,739,011 5,422,360 316,652
232 369/SERVICES L 181 978,886 940,584 38,302
233 370/METERS L 182 2,343,243 2,267,552 75,691
234 371/INSTALLATIONS ON CUSTOMER PREMISES L 183 (59,426) (55,326) (4,100)
235 373/STREET LIGHTING SYSTEMS L 184 897,258 861,431 35,827
236 TOTAL DISTRIBUTION PLANT 25,415,955 24,354,070 1,061,885
237
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 6 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
238 TABLE 2-ACCUMULATED PROVISION FOR DEPRECIATION
239
240 GENERALPLANT
241 389/LAND&LAND RIGHTS L 189 0 0 0
242 390/STRUCTURES&IMPROVEMENTS L 190 1,040,569 996,490 44,078
243 391/OFFICE FURNITURE&EQUIPMENT L 191 912,215 873,574 38,641
244 392/TRANSPORTATION EQUIPMENT L 192 1,760,108 1,685,550 74,558
245 393/STORES EQUIPMENT L 193 218,505 209,249 9,256
246 394/TOOLS,SHOP&GARAGE EQUIPMENT L 194 439,176 420,573 18,603
247 395/LABORATORY EQUIPMENT L 195 412,494 395,021 17,473
248 396/POWER OPERATED EQUIPMENT L 196 1,148,778 1,100,116 48,662
249 397/COMMUNICATIONS EQUIPMENT L 197 2,849,017 2,728,333 120,684
250 398/MISCELLANEOUS EQUIPMENT L 198 120,148 115,059 5,089
251 TOTAL GENERAL PLANT 8,901,011 8,523,965 377,046
252
253 AMORTIZATION OF DISALLOWED COSTS L 118 (296,299) (283,932) (12,367)
254
255 TOTAL ACCUM PROVISION DEPRECIATION 88,598,095 84,945,117 3,652,978
256
257 AMORTIZATION OF OTHER UTILITY PLANT
258 302/FRANCHISES AND CONSENTS L 115 1,456,720 1,397,295 59,425
259 303/MISCELLANEOUS INTANGIBLE PLANT L 116 3,937,967 3,771,155 166,812
260
261 TOTAL AMORT OF OTHER UTILITY PLANT 5,394,687 5,168,451 226,237
262
263 TOTAL ACCUM PROVISION FOR DEPR
264 &AMORTIZATION OF OTHER UTILITY PLANT 93,992,783 90,113,568 3,879,215
265
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 7 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
266 TABLE 3-ADDITIONS&DEDUCTIONS TO RATEBASE
267
268 NET ELECTRIC PLANT IN SERVICE 766,373,765 733,831,546 32,542,219
269 LESS:
270 252 CUSTOMER ADVANCES FOR CONSTRUCTION
271 POWER SUPPLY D10 0 0 0
272 OTHER DA252 0 0 0
273 TOTAL CUSTOMER ADV FOR CONSTRUCTION 0 0 0
274
275 ACCUMULATED DEFERRED INCOME TAXES
276 190/ACCUMULATED DEFERRED INCOME TAXES
277 CUSTOMER ADVANCES FOR CONSTUCTION DA252 0 0 0
278 OTHER LABOR 0 0 0
279 TOTAL ACCOUNT190 0 0 0
280 281/ACCELERATED AMORTIZATION P101 P 0 0 0
281 282/OTHER PROPERTY P101 P 3,173,455 3,039,028 134,427
282 283/OTHER P101 P 0 0 0
283 TOTAL ACCUM DEFERRED INCOME TAXES 3,173,455 3,039,028 134,427
284
285 NET ELECTRIC PLANT IN SERVICE 763,200,310 730,792,518 32,407,792
286 ADD:
287 WORKING CAPITAL
288 151/FUEL INVENTORY E10 0 0 0
289 154&163/PLANT MATERIALS&SUPPLIES
290 PRODUCTION-GENERAL L 126 0 0 0
291 TRANSMISSION-GENERAL L 157 0 0 0
292 DISTRIBUTION-GENERAL L 186+CIAC 0 0 0
293 OTHER-UNCLASSIFIED L 202 0 0 0
294 TOTAL ACCOUNT 154&163 0 0 0
295 165/PREPAID ITEMS
296 AD VALOREM TAXES L 700 0 0 0
297 OTHER PROD-RELATED PREPAYMENTS D10 0 0 0
298 INSURANCE L 126 0 0 0
299 PENSION EXPENSE L 1042 0 0 0
300 PREPAID RETIREE BENEFITS L 1042 0 0 0
301 MISCELLANEOUS PREPAYMENTS P101P 0 0 0
302 TOTAL ACCOUNT165 0 0 0
303 WORKING CASH ALLOWANCE L 621 0 0 0
304
305 TOTAL WORKING CAPITAL 0 0 0
306
307 NET ELECTRIC PLANT IN SERVICE 763,200,310 730,792,518 32,407,792
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 8 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
308 TABLE 3-ADDITIONS&DEDUCTIONS TO RATEBASE
309
310 NET ELECTRIC PLANT IN SERVICE 763,200,310 730,792,518 32,407,792
311 ADD:
312 105/PLANT HELD FOR FUTURE USE
313 HYDRAULIC PRODUCTION L 122 0 0 0
314 TRANS LAND&LAND RIGHTS L 131 0 0 0
315 TRANS STRUCTURES&IMPROVEMENTS L 135 0 0 0
316 TRANS STATION EQUIPMENT L 139 0 0 0
317 DIST LAND&LAND RIGHTS L 163 0 0 0
318 DIST STRUCTURES&IMPROVEMENTS L 167 0 0 0
319 DIST STATIONS EQUIPMENT 0
320 GEN LAND&LAND RIGHTS L 189 0 0 0
321 GEN STRUCTURES&IMPROVEMENTS L 190 0 0 0
322 COMMUNICATION L 192 0 0 0
323 TOTAL PLANT HELD FOR FUTURE USE 0 0 0
324
325 114/115-ASSET EXCHANGE ACQUISITION ADJUSTMENT CIDA 0 0 0
326
327 DEFERRED PROGRAMS:
328 182/ CONSERVATION PROGRAMS
329 IDAHO DEFERRED CONSERVATION PROGRAMS CIDA 0 0 0
330 OREGON DEFERRED CONSERVATION PROGRAMS CODA 0 0 0
331 TOTAL CONSERVATION PROGRAMS 0 0 0
332 182&186/MISC.OTHER REGULATORY ASSETS
333 CUB FUND INTEREST(OPUC 15-399) CODA 0 0 0
334 AM.FALLS BOND REFINANCING D10 0 0 0
335 SFAS 87 CAPITALIZED PENSION-OPUC ORDER 10-064 CODA 0 0 0
336 CLOUD COMPUTING-(IPUC Order 34707) CIDA 0 0 0
337 WILDFIRE MITIGATION(IPUC Order 35077) CIDA 0 0 0
338 SIEMENS LTP RATE BASE(IPUC Order 33420) CIDA 0 0 0
339 SIEMENS LTP DEFERRED RATE BASE(IPUC Order 33420) CIDA 0 0 0
340 SIEMENS LTP RATE BASE(OPUC ORDER 15-387) CODA 0 0 0
341 SIEMENS LTP DEFERRED RATE BASE(OPUC ORDER 15-387) CODA 0 0 0
342 TOTAL OTHER REGULATORY ASSETS 0 0 0
343 186/MISC.OTHER DEFERRED PROGRAMS 0 0 0
344 254/JIM BRIDGER PLANT END OF LIFE DEPR-OPUC ORD 12-296 CODA 0 0 0
345 RECONNECT FEES-(OPUC ADV 16-09) CODA 0 0 0
346 TOTAL DEFERRED PROGRAMS 0 0 0
347
348 DEVELOPMENT OF IERCO RATE BASE
349 INVESTMENT IN IERCO E10 0 0 0
350 PREPAID COAL ROYALTIES E10 0 0 0
351 NOTES PAYABLE TO/RECEIVABLE FROM SUBSIDIARY E10 0 0 0
352 TOTAL SUBSIDIARY RATE BASE 0 0 0
353
354 TOTAL COMBINED RATE BASE 763,200,310 730,792,519 32,407,792
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 9 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
355 TABLE 4-OPERATING REVENUES
356 FIRM ENERGY SALES
357 440-448/RETAIL RETREV 5,497,548 5,497,548 0
358 442/BASE REVENUE TRANSFER-PCA CIDA 0 0 0
359 442/BASE REVENUE TRANSFER-EE RIDER CIDA 0 0 0
360 447/FIRM SALES FOR RESALE E10 0 0 0
361 447/SYSTEM OPPORTUNITY SALES E10 0 0 0
362 447.050/FINANCIAL LOSSES E10 0 0 0
363 TOTAL SALES OF ELECTRICITY 5,497,548 5,497,548 0
364
365 OTHER OPERATING REVENUES
366 415/MERCHANDISING REVENUES D60 0 0 0
367
368 449/OATT TARIFF REFUND
369 NETWORK D11 0 0 0
370 POINT-TO-POINT D11 0 0 0
371 TOTAL ACCOUNT 449 0 0 0
372
373 451/MISCELLANEOUS SERVICE REVENUES DA451 0 0 0
374
375 454/RENTS FROM ELECTRIC PROPERTY
376 SUBSTATION EQUIPMENT L 139 0 0 0
377 TRANSFORMER RENTALS D11 0 0 0
378 LINE RENTALS D11 0 0 0
379 COGENERATION L 498 0 0 0
380 REAL ESTATE RENTS L 200 0 0 0
381 DARK FIBER PROJECT CIDA 0 0 0
382 POLE ATTACHMENTS L 176 0 0 0
383 FACILITIES CHARGES DA454 0 0 0
384 OTHER RENTALS L122 0 0 0
385 MISCELLANEOUS PTD 0 0 0
386 TOTAL ACCO U NT 454 0 0 0
387
388 456/OTHER ELECTRIC REVENUES
389 TRANSMISSION NETWORK SERVICES-FIRM DA D11 0 0 0
390 TRANSMISSION NETWORK SERVICES-DIST FACILITIES D60 0 0 0
391 TRANSMISSION POINT-TO-POINT D11 0 0 0
392 PHOTOVOLTAIC STATION SERVICE L 186+CIAC 0 0 0
393 ENERGY EFFICIENCY RIDER CIDA 0 0 0
394 STAND-BY SERVICE DASTNBY 0 0 0
395 SIERRA PACIFIC USAGE CHARGE E10 0 0 0
396 ANTELOPE L 518 0 0 0
397 MISCELLANEOUS PTD 0 0 0
398 TOTAL ACCOUNT 456 0 0 0
399
400 TOTAL OTHER OPERATING REVENUES 0 0 0
401
402 TOTAL OPERATING REVENUES 5,497,548 5,497,548 0
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 10 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
403 TABLE 5-OPERATION&MAINTENANCE EXPENSES
404 STEAM POWER GENERATION
405 OPERATION
406 500/SUPERVISION&ENGINEERING D10 3,713 3,561 151
407 501/FUEL E10 0 0 0
408 502/STEAM EXPENSES
409 LABOR D10 0 0 0
410 OTHER E10 0 0 0
411 TOTAL ACCOUNT502 0 0 0
412 505/ELECTRIC EXPENSES
413 LABOR D10 0 0 0
414 OTHER E10 0 0 0
415 TOTAL ACCOUNT 505 0 0 0
416 506/MISCELLANEOUS EXPENSES D10 (139) (134) (6)
417 507/RENTS L 121 0 0 0
418 STEAM OPERATION EXPENSES 3,573 3,428 146
419
420 MAINTENANCE
421 510/SUPERVISION&ENGINEERING D10 0 0 0
422 511 /STRUCTURES D10 0 0 0
423 512/BOILER PLANT
424 LABOR D10 0 0 0
425 OTHER E10 0 0 0
426 TOTAL ACCOUNT 512 0 0 0
427 513/ELECTRIC PLANT
428 LABOR D10 0 0 0
429 OTHER E10 0 0 0
430 TOTAL ACCOUNT 513 0 0 0
431 514/MISCELLANEOUS STEAM PLANT D10 0 0 0
432 STEAM MAINTENANCE EXPENSES 0 0 0
433 TOTAL STEAM GENERATION EXPENSES 3,573 3,428 146
434
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 11 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
435 TABLE 5-OPERATION&MAINTENANCE EXPENSES
436 HYDRAULIC POWER GENERATION
437 OPERATION
438 535/SUPERVISION&ENGINEERING L 895 114,935 110,217 4,718
439 536/WATER FOR POWER
440 WATER FOR POWER/WCLOUD SEEDING D10 (1,885) (1,808) (77)
441 WATER LEASE D10 0 0 0
442 53(TOTAL ACCOUNT 536 (1,885) (1,808) (77)
443 537/HYDRAULIC EXPENSES D10 477,683 458,196 19,486
444 538/ELECTRIC EXPENSES
445 LABOR D10 242,198 232,317 9,880
446 OTHER E10 0 0 0
447 TOTAL ACCOUNT 538 242,198 232,317 9,880
448 539/MISCELLANEOUS EXPENSES D10 489,559 469,588 19,971
449 540/RENTS D10 0 0 0
450 HYDRAULIC OPERATION EXPENSES 1,322,489 1,268,510 53,978
451
452 MAINTENANCE
453 541/SUPERVISION&ENGINEERING L 906 99,040 95,000 4,040
454 542/STRUCTURES D10 5,823 5,586 238
455 543/RESERVOIRS,DAMS&WATERWAYS D10 85,844 82,342 3,502
456 544/ELECTRIC PLANT
457 LABOR D10 (13,715) (13,155) (559)
458 OTHER E10 0 0 0
459 TOTAL ACCOUNT 544 (13,715) (13,155) (559)
460 545/MISCELLANEOUS HYDRAULIC PLANT L 122 171,556 164,558 6,998
461 HYDRAULIC MAINTENANCE EXPENSES 348,549 334,330 14,219
462 TOTAL HYDRAULIC GENERATION EXPENSES 1,671,038 1,602,841 68,197
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 12 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
463 TABLE 5-OPERATION&MAINTENANCE EXPENSES
464 OTHER POWER GENERATION
465 OPERATION
466 546/SUPERVISION&ENGINEERING L 919 99,353 95,300 4,053
467 547/FUEL
468 DIESEL FUEL E10 0 0 0
469 OTHER E10 0 0 0
470 BRIDGER-GAS OPERATIONS E10 0 0 0
471 TOTAL ACCOUNT 547 0 0 0
472 548/GENERATING EXPENSES
473 LABOR D10 441,033 423,042 17,991
474 OTHER E10 0 0 0
475 TOTAL ACCOUNT 548 441,033 423,042 17,991
476 549/MISCELLANEOUS EXPENSES D10 171,671 164,668 7,003
477 550/RENTS D10 0 0 0
478 OTHER POWER OPER EXPENSES 712,057 683,010 29,047
479
480 MAINTENANCE
481 551/SUPERVISION&ENGINEERING L 929 0 0 0
482 552/STRUCTURES D10 4,070 3,904 166
483 553/GENERATING&ELECTRIC PLANT
484 LABOR D10 5,162 4,951 211
485 OTHER E10 0 0 0
486 TOTAL ACCOUNT 553 5,162 4,951 211
487 554/MISCELLANEOUS EXPENSES L 124 59,691 57,256 2,435
488 OTHER POWER MAINT EXPENSES 68,923 66,111 2,812
489 TOTAL OTHER POWER GENERATION EXP 780,980 749,121 31,859
490
491 OTHER POWER SUPPLY EXPENSE
492 555.0/PURCHASED POWER
493 POWER EXPENSE E10 0 0 0
494 OTHER CIDA 0 0 0
495 TRANSMISSION LOSSES E10 0 0 0
496 DEMAND RESPONSE INCENTIVE CIDA 0 0 0
497 TOTAL 555.0/PURCHASED POWER 0 0 0
498 555.1/COGENERATION&SMALL POWER PROD E10 0 0 0
499 555/TOTAL 0 0 0
500 556/LOAD CONTROL&DISPATCHING EXPENSES D10 0 0 0
501 557/OTHER EXPENSES
502 PCA/EPC ACCOUNTS CIDA 0 0 0
503 OREGON POWER COST-RELATED EXPENSES CODA 0 0 0
504 OTHER D10 589,891 565,827 24,064
505 557/TOTAL 589,891 565,827 24,064
506 TOTAL OTHER POWER SUPPLY EXPENSES 589,891 565,827 24,064
507
508 TOTAL PRODUCTION EXPENSES 3,045,482 2,921,217 124,266
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 13 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
509 TABLE 5-OPERATION&MAINTENANCE EXPENSES
510 TRANSMISSION EXPENSES
511 OPERATION
512 560/SUPERVISION&ENGINEERING L 157 2,879 2,762 117
513 561/LOAD DISPATCHING D12 539,717 517,700 22,017
514 562/STATION EXPENSES L 139 59,838 57,397 2,441
515 563/OVERHEAD LINE EXPENSES L 143+147+151 98,225 94,218 4,007
516 565/TRANSMISSION OF ELECTRICITY BY OTHERS E10 0 0 0
517 566/MISCELLANEOUS EXPENSES L157 0 0 0
518 567/RENTS L 157 0 0 0
519 TOTAL TRANSMISSION OPERATION 700,660 672,077 28,582
520
521 MAINTENANCE
522 568/SUPERVISION&ENGINEERING L 157 64,239 61,619 2,621
523 569/STRUCTURES L 135 38,010 36,459 1,551
524 570/STATION EQUIPMENT L 139 450,722 432,335 18,387
525 571/OVERHEAD LINES L 143+147+151 267,008 256,116 10,892
526 573/MISCELLANEOUS PLANT L 157 (2,922) (2,803) (119)
527 TOTAL TRANSMISSION MAINTENANCE 817,057 783,726 33,331
528
529 TOTAL TRANSMISSION EXPENSES 1,517,716 1,455,803 61,913
530
531 REGIONAL MARKET EXPENSES
532 OPERATION
533 575/OPER TRANS MKT ADMIN-EIM L 157 0 0 0
534
535 TOTAL REGIONAL MARKET EXPENSES 0 0 0
536
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 14 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
537 TABLE 5-OPERATION&MAINTENANCE EXPENSES
538 DISTRIBUTION EXPENSES
539 OPERATION
540 580/SUPERVISION&ENGINEERING L 186 401,388 384,027 17,361
541 581/LOAD DISPATCHING D60 863,231 830,537 32,694
542 582/STATION EXPENSES L 171 98,208 94,072 4,136
543 583/OVERHEAD LINE EXPENSES L 176+177 207,838 192,689 15,149
544 584/UNDERGROUND LINE EXPENSES L 178+179 360,490 355,099 5,391
545 585/STREET LIGHTING&SIGNAL SYSTEMS L 184 (22,299) (21,409) (890)
546 586/METER EXPENSES L 182 861,859 834,019 27,840
547 587/CUSTOMER INSTALLATIONS EXPENSE L 183 165,988 154,536 11,452
548 588/MISCELLANEOUS EXPENSES L 186 198,869 190,268 8,602
549 589/RENTS L 186 0 0 0
550 TOTAL DISTRIBUTION OPERATION 3,135,573 3,013,839 121,734
551
552 MAINTENANCE
553 590/SUPERVISION&ENGINEERING L 186 (1,662) (1,590) (72)
554 591/STRUCTURES L167 0 0 0
555 592/STATION EQUIPMENT L 171 832,801 797,724 35,077
556 593/OVERHEAD LINES L 176+177 496,969 460,746 36,223
557 594/UNDERGROUND LINES L 178+179 15,029 14,805 225
558 595/LINE TRANSFORMERS L 180 381 360 21
559 596/STREET LIGHTING&SIGNAL SYSTEMS L 184 (32,851) (31,540) (1,312)
560 597/METERS L 182 140,121 135,595 4,526
561 598/MISCELLANEOUS PLANT L 186 33,559 32,107 1,451
562 TOTAL DISTRIBUTION MAINTENANCE 1,484,347 1,408,207 76,140
563 TOTAL DISTRIBUTION EXPENSES 4,619,920 4,422,046 197,874
564
565 CUSTOMER ACCOUNTING EXPENSES
566 901/SUPERVISION L 999 115,100 109,361 5,739
567 902/METER READING CW902 27,007 23,392 3,615
568 903/CUSTOMER RECORDS&COLLECTIONS CW903 1,170,506 1,132,078 38,428
569 904/UNCOLLECTIBLE ACCOUNTS CW904 0 0 0
570 905/MISC EXPENSES L 567+568+569 0 0 0
571 TOTAL CUSTOMER ACCOUNTING EXPENSES 1,312,613 1,264,831 47,781
572
573 CUSTOMER SERVICES&INFORMATION EXPENSES
574 907/SUPERVISION L 1007 28,463 27,724 739
575 908/CUSTOMER ASSISTANCE
576 SYSTEM CONSERVATION E10 0 0 0
577 OTHER CUSTOMER ASSISTANCE DA908 1,272,558 1,239,537 33,021
578 TOTAL ACCOUNT908 1,272,558 1,239,537 33,021
579 909/INFORMATION&INSTRUCTIONAL DA909 0 0 0
580 910/MISCELLANEOUS EXPENSES L 578+579 97,408 94,880 2,528
581 912/DEMO AND SELLING EXPENSES E10 0 0 0
582 TOTAL CUST SERV&INFORMATN EXPENSES 1,398,429 1,362,142 36,287
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 15 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
583 TABLE 5-OPERATION&MAINTENANCE EXPENSES
584 ADMINISTRATIVE&GENERAL EXPENSES
585 920/ADMINISTRATIVE&GENERAL SALARIES LABOR 8,028,691 7,682,492 346,198
586 921/OFFICE SUPPLIES LABOR 230,392 220,458 9,935
587 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR LABOR (9,339,367) (8,936,652) (402,715)
588 923/OUTSIDE SERVICES LABOR 0 0 0
589 924/PROPERTY INSURANCE
590 PRODUCTION-STEAM D10 0 0 0
591 ALL RISK&MISCELLANEOUS P110P 66,654 63,882 2,772
592 TOTAL ACCOUNT 924 66,654 63,882 2,772
593 925/INJURIES&DAMAGES LABOR 18,752 17,943 809
594 926/EMPLOYEE PENSIONS&BENEFITS LABOR 8,410,933 8,048,252 362,681
595 EMPLOYEE PENSIONS&BENEFITS-OREGON CODA 0 0 0
596 EMPLOYEE PENSIONS&BENEFITS-IDAHO CIDA 0 0 0
597 EMPLOYEE PENSIONS&BENEFITS-CAPITALIZED OREGON CODA 0 0 0
598 927/FRANCHISE REQUIREMENTS CIDA 0 0 0
599 928/REGULATORY COMMISSION EXPENSES
600 928.101/FERC ADMIN ASSESS&SECURITIES
601 CAPACITY RELATED D10 0 0 0
602 ENERGY RELATED E10 0 0 0
603 FERC RATE CASE E99 0 0 0
604 FERC ORDER 472 D11 0 0 0
605 FERC OTHER D11 0 0 0
606 FERC-OREGON HYDRO FEE D11 0 0 0
607 SEC EXPENSES CIDA 0 0 0
608 IDAHO PUC -RATE CASE CIDA 0 0 0
609 -OTHER CIDA 0 0 0
610 OREGON PUC-RATE CASE CODA 0 0 0
611 -OTHER CODA 0 0 0
612 TOTAL ACCOUNT 928 0 0 0
613 929/DUPLICATE CHARGES LABOR 0 0 0
614 930.1/GENERAL ADVERTISING LABOR 0 0 0
615 930.2/MISCELLANEOUS EXPENSES LABOR (12,177) (11,652) (525)
616 931/RENTS L 200 0 0 0
617 TOTAL ADM&GEN OPERATION 7,403,878 7,084,724 319,154
618 PLUS:
619 935/GENERAL PLANT MAINTENANCE L 200 259,496 248,504 10,992
620 416/MERCHANDISING EXPENSE D60 0 0 0
621 TOTAL OPER&MAINT EXPENSES 19,557,535 18,759,267 798,267
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 16 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
622 TABLE 6-DEPRECIATION&AMORTIZATION EXPENSE
623
624 DEPRECIATION EXPENSE
625 310-316/STEAM PRODUCTION L 121 897,709 861,089 36,621
626 330-336/HYDRAULIC PRODUCTION L 122 2,671,493 2,562,513 108,980
627 340-346/OTHER PRODUCTION-BASELOAD L 123 190,196 182,437 7,759
628 340-346/OTHER PRODUCTION-PEAKERS L 124 80,887 77,588 3,300
629 TOTAL PRODUCTION PLANT 3,840,286 3,683,626 156,659
630
631 TRANSMISSION PLANT
632 350/LAND&LAND RIGHTS L 131 60,621 58,148 2,473
633 352/STRUCTURES&IMPROVEMENTS L 135 155,594 149,246 6,347
634 353/STATION EQUIPMENT L 139 772,586 741,069 31,517
635 354/TOWERS&FIXTURES L 143 160,021 153,493 6,528
636 355/POLES&FIXTURES L 147 797,742 765,199 32,543
637 356/OVERHEAD CONDUCTORS&DEVICES L 151 267,279 256,376 10,903
638 359/ROADS&TRAILS L 155 102 98 4
639 TOTAL TRANSMISSION PLANT 2,213,945 2,123,630 90,315
640
641 DISTRIBUTION PLANT
642 360/LAND&LAND RIGHTS L 163 (1,838) (1,775) (63)
643 361/STRUCTURES&IMPROVEMENTS L 167 188,344 179,443 8,901
644 362/STATION EQUIPMENT L 171 281,157 269,315 11,842
645 363/STORAGE BATTERY EQUIPMENT L 173 9,627,639 9,234,892 392,747
646 364/POLES,TOWERS&FIXTURES L 176 516,031 475,738 40,293
647 365/OVERHEAD CONDUCTORS&DEVICES L 177 187,020 176,337 10,683
648 366/UNDERGROUND CONDUIT L 178 127,898 125,894 2,003
649 367/UNDERGROUND CONDUCTORS&DEVICES L 179 811,051 799,005 12,047
650 368/LINE TRANSFORMERS L 180 1,180,703 1,115,557 65,146
651 369/SERVICES L 181 63,601 61,112 2,489
652 370/METERS L 182 311,142 301,091 10,050
653 371/INSTALLATIONS ON CUSTOMER PREMISES L 183 51,182 47,651 3,531
654 373/STREET LIGHTING SYSTEMS L 184 19,480 18,702 778
655 TOTAL DISTRIBUTION PLANT 13,363,409 12,802,962 560,446
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 17 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
656 TABLE 6-DEPRECIATION&AMORTIZATION EXPENSE
657
658 GENERALPLANT
659 389/LAND&LAND RIGHTS L 189 0 0 0
660 390/STRUCTURES&IMPROVEMENTS L 190 535,348 512,671 22,677
661 391/OFFICE FURNITURE&EQUIPMENT L 191 636,073 609,129 26,944
662 392/TRANSPORTATION EQUIPMENT L 192 (66,407) (63,594) (2,813)
663 393/STORES EQUIPMENT L 193 129,334 123,855 5,479
664 394/TOOLS,SHOP&GARAGE EQUIPMENT L 194 51,369 49,193 2,176
665 395/LABORATORY EQUIPMENT L 195 85,142 81,535 3,607
666 396/POWER OPERATED EQUIPMENT L 196 0 0 0
667 397/COMMUNICATIONS EQUIPMENT L 197 328,077 314,179 13,897
668 398/MISCELLANEOUS EQUIPMENT L 198 (28,300) (27,101) (1,199)
669 TOTAL GENERAL PLANT 1,670,634 1,599,866 70,768
670
671 TOTAL DEPRECIATION EXPENSE 21,088,273 20,210,085 878,189
672
673 DEPRECIATION ON DISALLOWED COSTS L 118 0 0 0
674 TOTAL DEPRECIATION EXPENSE 21,088,273 20,210,085 878,189
675
676 AMORTIZATION EXPENSE
677 302/FRANCHISES AND CONSENTS L 115 306,290 293,795 12,495
678 303/MISCELLANEOUS INTANGIBLE PLANT L 116 1,959,025 1,876,041 82,984
679 ADJUSTMENTS,GAINS&LOSSES L 118 0 0 0
680 TOTAL AMORTIZATION EXPENSE 2,265,315 2,169,836 95,479
681
682 TOTAL DEPRECIATION&AMORTIZATION EXP 23,353,588 22,379,921 973,667
683
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 18 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
684 TABLE 7-TAXES OTHER THAN INCOME TAXES
685
686 TAXES OTHER THAN INCOME
687 FEDERALTAXES
688 FICA LABOR 0 0 0
689 FUTA LABOR 0 0 0
690 LESS PAYROLL DEDUCTION LABOR 0 0 0
691
692 STATE TAXES
693 AD VALOREM TAXES
694 JIM BRIDGER STATION L 121 0 0 0
695 VALMY L 121 0 0 0
696 OTHER-PRODUCTION PLANT L 126 0 0 0
697 OTHER-TRANSMISSION PLANT L 157 0 0 0
698 OTHER-DISTRIBUTION PLANT L 186 0 0 0
699 OTHER-GENERAL PLANT L200 0 0 0
700 SUB-TOTAL 0 0 0
701
702 LICENSES-HYDRO PROJECTS L 122 0 0 0
703
704 REGULATORY COMMISSION FEES
705 STATE OF IDAHO CIDA 0 0 0
706 STATE OF OREGON CODA 0 0 0
707
708 FRANCHISE TAXES
709 STATE OF OREGON CODA 0 0 0
710
711 OTHER STATE TAXES
712 UNEMPLOYMENTTAXES LABOR 0 0 0
713 HYDRO GENERATION KWH TAX E10 0 0 0
714 IRRIGATION-PIC E10 0 0 0
715
716 TOTAL TAXES OTHER THAN INCOME 0 0 0
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 19 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
717 TABLE 8-REGULATORY DEBITS&CREDITS
718 REGULATORY DEBITS/CREDITS
719 STATE OF IDAHO CIDA 0 0 0
720 STATE OF OREGON CODA 0 0 0
721
722 TOTAL REGULATORY DEBITS/CREDITS 0 0 0
723
724
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 20 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
725 TABLE 9-INCOME TAXES
726
727 410/411 NET PROVISION FOR DEFERRED INCOME TAXES
728 ACCOUNT#282-RELATED P101 P 3,173,455 3,039,028 134,427
729 ACCOUNTS#190&#283-RELATED L 756 0 0 0
730 TOTAL NET PROVISION FOR DEFERRED INCOME TAXES 3,173,455 3,039,028 134,427
731
732 411.4-INVESTMENT TAX CREDIT ADJUSTMENT P101 P 73,978,000 70,844,300 3,133,700
733
734 SUMMARY OF INCOME TAXES
735
736 TOTAL FEDERAL INCOME TAX (82,058,780) (78,545,328) (3,513,452)
737
738 STATE INCOME TAX
739 STATE OF IDAHO (10,357,367) (9,908,006) (449,361)
740 STATE OF OREGON (233,216) (222,768) (10,448)
741 OTHER STATES (77,739) (74,256) (3,483)
742 TOTAL STATE INCOME TAXES (10,668,322) (10,205,030) (463,292)
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 21 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
743 TABLE 10-CALCULATION OF FEDERAL INCOME TAX
744 OPERATING REVENUES 5,497,548 5,497,548 0
745
746 OPERATING EXPENSES
747 OPERATION&MAINTENANCE 19,557,535 18,759,267 798,267
748 DEPRECIATION EXPENSE 21,088,273 20,210,085 878,189
749 AMORTIZATION OF LIMITED TERM PLANT 2,265,315 2,169,836 95,479
750 TAXES OTHER THAN INCOME 0 0 0
751 REGULATORY DEBITS/CREDITS 0 0 0
752 TOTAL OPERATING EXPENSES 42,911,123 41,139,188 1,771,935
753
754 BOOK-TAX ADJUSTMENT L 752 0 0 0
755
756 INCOME BEFORE TAX ADJUSTMENTS(NOI Before Interest) (37,413,575) (35,641,640) (1,771,935)
757
758 INCOME STATEMENT ADJUSTMENTS
759 INTEREST EXPENSE SYNCHRONIZATION L 354 25,426,280 24,346,604 1,079,677
760
761 NET OPERATING INCOME BEFORE TAXES (62,839,855) (59,988,244) (2,851,611)
762
763 TOTAL STATE INCOME TAXES(ALLOWED) (10,668,322) (10,205,030) (463,292)
764
765 NET FEDERAL INCOME AFTER STATE INCOME TAXES (52,171,533) (49,783,214) (2,388,319)
766
767 FEDERAL TAX AT 21 PERCENT @ 21% (10,956,022) (10,454,475) (501,547)
768 OTHER CURRENT TAX ADJUSTMENTS L 767 0 0 0
769 PRIOR YEAR TAX ADJUSTMENT L 767 0 0 0
770
771 TOTAL FEDERAL INCOME TAX BEFORE OTHER ADJUSTMENTS (10,956,022) (10,454,475) (501,547)
772
773 OTHER TAX ADJUSTMENTS
774 ALLOWANCE FOR AFUDC P101 P 0 0 0
775 FEDERAL INCOME TAX ADJUSTMENTS-PLANT P101 P (14,898,848) (14,267,734) (631,114)
776 FEDERAL INCOME TAX ADJUSTMENTS-OTHER L 756 0 0 0
777 SUM OF OTHER ADJUSTMENTS (14,898,848) (14,267,734) (631,114)
778 FEDERAL TAX ON OTHER TAX ADJ AT 21 PERCENT @ 21% (3,128,758) (2,996,224) (132,534)
779 FEDERAL GENERAL BUSINESS CREDITS P101 P 67,974,000 65,094,629 2,879,371
780
781 TOTAL FEDERAL INCOME TAX (82,058,780) (78,545,328) (3,513,452)
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 22 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
782 TABLE 11-OREGON STATE INCOME TAX
783
784 NET OPERATING INCOME BEFORE TAXES-OREGON L 761 (62,839,855) (59,988,244) (2,851,611)
785
786 ALLOWANCE FOR AFUDC P101 P 0 0 0
787 STATE INCOME TAX ADJUSTMENTS-PLANT P101 P (14,898,848) (14,267,734) (631,114)
788 STATE INCOME TAX ADJUSTMENTS-OTHER L 756 0 0 0
789 ADD: OTHER L 756 0 0 0
790
791 TOTAL STATE INCOME TAX ADJUSTMENTS-OREGON (14,898,848) (14,267,734) (631,114)
792
793 INCOME SUBJECT TO OREGON TAX (77,738,703) (74,255,978) (3,482,725)
794
795 IERCO TAXABLE INCOME E10 0 0 0
796 BONUS DEPRECIATION&OTHER OREGON ADJ P101 P 0 0 0
797 OTHER L 756 0 0 0
798
799 TOTAL STATE TAXABLE INCOME-OREGON (77,738,703) (74,255,978) (3,482,725)
800 APPORTIONMENT FACTOR(0.045454550) @ 0.045454550 (3,533,578) (3,375,272) (158,306)
801 POST APPORTIONMENT M ITEMS L 756 0 0 0
802 TOTAL TAXABLE INCOME-OREGON (3,533,578) (3,375,272) (158,306)
803
804 OREGON TAX AT6.6 PERCENT @ 6.60% (233,216) (222,768) (10,448)
805 LESS:INVESTMENT TAX CREDIT P101 P 0 0 0
806
807 STATE INCOME TAX ALLOWED-OREGON (233,216) (222,768) (10,448)
808 ADD: OR CAT TAX L 785 0 0 0
809 PRIOR YEARS'TAX ADJUSTMENT L 785 0 0 0
810
811 STATE INCOME TAX PAID-OREGON (233,216) (222,768) (10,448)
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 23 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
812 TABLE 12-IDAHO STATE INCOME TAX
813
814 NET OPERATING INCOME BEFORE TAXES-IDAHO L 744 (62,839,855) (59,988,244) (2,851,611)
815
816 ALLOWANCE FOR AFUDC P101 P 0 0 0
817 STATE INCOME TAX ADJUSTMENTS-PLANT P101 P (14,898,848) (14,267,734) (631,114)
818 STATE INCOME TAX ADJUSTMENTS-OTHER L 756 0 0 0
819
820 INCOME SUBJECT TO IDAHO TAX (77,738,703) (74,255,978) (3,482,725)
821
822 IERCO TAXABLE INCOME E10 0 0 0
823 BONUS DEPRECIATION ADJUSTMENT P101 P 0 0 0
824 OTHER L 756 0 0 0
825 TOTAL STATE TAXABLE INCOME-IDAHO (77,738,703) (74,255,978) (3,482,725)
826 APPORTIONMENT FACTOR(.965517241) @ 0.965517241 (75,058,058) (71,695,427) (3,362,631)
827 POST APPORTIONMENT SCHEDULE M L 756 0 0 0
828 TOTAL TAXABLE INCOME-IDAHO (75,058,058) (71,695,427) (3,362,631)
829 IDAHO TAX AT 5.8 PERCENT @ 5.80% (4,353,367) (4,158,335) (195,033)
830 LESS:INVESTMENT TAX CREDIT P101 P 6,004,000 5,749,671 254,329
831
832 STATE INCOME TAX ALLOWED-IDAHO (10,357,367) (9,908,006) (449,361)
833 ADD: CURRENT TAX ADJUSTMENT L 829 0 0 0
834 PRIOR YEARS'TAX ADJUSTMENT 829 0 0 0
835 STATE INCOME TAX PAID-IDAHO (10,357,367) (9,908,006) (449,361)
836
837 OTHER STATE INCOME TAX
838 INCOME SUBJECT TO TAX (77,738,703) (74,255,978) (3,482,725)
839
840 IERCO TAXABLE INCOME E10 0 0 0
841 BONUS DEPRECIATION ADJUSTMENT P101 P 0 0 0
842 OTHER L 756 0 0 0
843 TOTAL TAXABLE INCOME-OTHER STATES (77,738,703) (74,255,978) (3,482,725)
844 APPORTIONMENT FACTOR(1.0) (77,738,703) (74,255,978) (3,482,725)
845 POST APPORTIONMENT SCHEDULE M L 759 0 0 0
846 TAXABLE INCOME (77,738,703) (74,255,978) (3,482,725)
847 OTHER TAX AT 0.1 PERCENT @ 0.10% (77,739) (74,256) (3,483)
848 ADD:CURRENT YEAR'S TAX DEFICIENCY L 832 0 0 0
849 PRIOR YEARS'TAX ADJUSTMENT L 832 0 0 0
850 OTHER STATES'INCOME TAX PAID (77,739) (74,256) (3,483)
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 24 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
851 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
852 STEAM POWER GENERATION
853 OPERATION
854 500/SUPERVISION&ENGINEERING L 855-865 266,133 255,277 10,857
855 501/FUEL D10 2,559,614 2,455,198 104,416
856 502/STEAM EXPENSES
857 LABOR D10 1,607,750 1,542,164 65,586
858 OTHER D10 0 0 0
859 TOTAL ACCOUNT 502 1,607,750 1,542,164 65,586
860 505/ELECTRIC EXPENSES
861 LABOR D10 626,112 600,571 25,541
862 OTHER D10 0 0 0
863 TOTAL ACCOUNT 505 626,112 600,571 25,541
864 506/MISCELLANEOUS EXPENSES D10 3,352,418 3,215,661 136,757
865 507/RENTS D10 0 0 0
866 STEAM OPERATION EXPENSES 8,412,027 8,068,870 343,158
867
868 MAINTENANCE
869 510/SUPERVISION&ENGINEERING L 870-879 0 0 0
870 511 /STRUCTURES D10 658 631 27
871 512/BOILER PLANT
872 LABOR D10 3,983,710 3,821,200 162,510
873 OTHER D10 0 0 0
874 TOTAL ACCOUNT 512 3,983,710 3,821,200 162,510
875 513/ELECTRIC PLANT
876 LABOR D10 1,522,637 1,460,523 62,114
877 OTHER D10 0 0 0
878 TOTAL ACCOUNT 513 1,522,637 1,460,523 62,114
879 514/MISCELLANEOUS STEAM PLANT D10 2,441,874 2,342,261 99,613
880 STEAM MAINTENANCE EXPENSES 7,948,879 7,624,615 324,264
881 TOTAL STEAM GENERATION EXPENSES 16,360,906 15,693,485 667,422
882
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 25 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
883 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
884 HYDRAULIC POWER GENERATION
885 OPERATION
886 535/SUPERVISION&ENGINEERING L 887-894 4,235,258 4,061,414 173,844
887 536/WATER FOR POWER E10 866,414 828,021 38,393
888 537/HYDRAULIC EXPENSES D10 6,262,192 6,006,734 255,458
889 538/ELECTRIC EXPENSES
890 LABOR D10 1,510,454 1,448,837 61,617
891 OTHER D10 0 0 0
892 TOTAL ACCOUNT 538 1,510,454 1,448,837 61,617
893 539/MISCELLANEOUS EXPENSES D10 3,401,219 3,262,471 138,748
894 540/RENTS D10 0 0 0
895 HYDRAULIC OPERATION EXPENSES 16,275,537 15,607,477 668,060
896
897 MAINTENANCE
898 541/SUPERVISION&ENGINEERING L 899-905 90,192 86,513 3,679
899 542/STRUCTURES D10 577,669 554,103 23,565
900 543/RESERVOIRS,DAMS&WATERWAYS D10 254,872 244,475 10,397
901 544/ELECTRIC PLANT
902 LABOR D10 1,799,397 1,725,993 73,404
903 OTHER D10 0 0 0
904 TOTAL ACCOUNT 544 1,799,397 1,725,993 73,404
905 545/MISCELLANEOUS HYDRAULIC PLANT D10 2,163,612 2,075,350 88,262
906 HYDRAULIC MAINTENANCE EXPENSES 4,885,742 4,686,434 199,307
907 TOTAL HYDRAULIC GENERATION EXPENSES 21,161,279 20,293,911 867,367
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 26 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
908 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
909 OTHER POWER GENERATION
910 OPERATION
911 546/SUPERVISION&ENGINEERING L 912-918 516,722 495,643 21,079
912 547/FUEL E10 0 0 0
913 548/GENERATING EXPENSES
914 LABOR D10 3,234,939 3,102,974 131,965
915 OTHER D10 0 0 0
916 TOTAL ACCOUNT 548 3,234,939 3,102,974 131,965
917 549/MISCELLANEOUS EXPENSES D10 370,607 355,488 15,118
918 550/RENTS D10 0 0 0
919 OTHER POWER OPER EXPENSES 4,122,267 3,954,105 168,162
920
921 MAINTENANCE
922 551/SUPERVISION&ENGINEERING L 923-928 0 0 0
923 552/STRUCTURES D10 43,046 41,290 1,756
924 553/GENERATING&ELECTRIC PLANT
925 LABOR D10 56,825 54,507 2,318
926 OTHER D10 0 0 0
927 TOTAL ACCOUNT 553 56,825 54,507 2,318
928 554/MISCELLANEOUS EXPENSES D10 690,424 662,259 28,165
929 OTHER POWER MAINT EXPENSES 790,295 758,056 32,239
930 TOTAL OTHER POWER GENERATION EXP 4,912,562 4,712,161 200,402
931
932 OTHER POWER SUPPLY EXPENSE
933 555.0/PURCHASED POWER E10 0 0 0
934 555.1/COGENERATION&SMALL POWER PROD
935 CAPACITY RELATED D10 0 0 0
936 ENERGY RELATED E10 0 0 0
937 TOTAL 555.1/CSPP 0 0
938 555/TOTAL 0 0
939 556/LOAD CONTROL&DISPATCHING EXPENSES D10 0 0 0
940 557/OTHER EXPENSES D10 4,495,330 4,311,949 183,381
941 TOTAL OTHER POWER SUPPLY EXPENSES 4,495,330 4,311,949 183,381
942
943 TOTAL PRODUCTION EXPENSES 46,930,078 45,011,506 1,918,572
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 27 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
944 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
945 TRANSMISSION EXPENSES
946 OPERATION
947 560/SUPERVISION&ENGINEERING L 157 2,380,639 2,283,524 97,115
948 561/LOAD DISPATCHING D12 3,053,979 2,929,396 124,583
949 562/STATION EXPENSES L 139 1,883,621 1,806,781 76,840
950 563/OVERHEAD LINE EXPENSES L 143+147+151 428,401 410,925 17,476
951 565/TRANSMISSION OF ELECTRICITY BY OTHERS E10 0 0 0
952 566/MISCELLANEOUS EXPENSES L 529 0 0 0
953 567/RENTS L 157 0 0 0
954 TOTAL TRANSMISSION OPERATION 7,746,639 7,430,625 316,014
955
956 MAINTENANCE
957 568/SUPERVISION&ENGINEERING L 157 90,949 87,239 3,710
958 569/STRUCTURES L 135 1,442,019 1,383,194 58,825
959 570/STATION EQUIPMENT L 139 2,327,169 2,232,236 94,934
960 571/OVERHEAD LINES L 143+147+151 865,811 830,491 35,320
961 573/MISCELLANEOUS PLANT L 157 3,520 3,376 144
962 TOTAL TRANSMISSION MAINTENANCE 4,729,468 4,536,536 192,932
963
964 TOTAL TRANSMISSION EXPENSES 12,476,107 11,967,161 508,946
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 28 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
965 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
966 DISTRIBUTION EXPENSES
967 OPERATION
968 580/SUPERVISION&ENGINEERING L 186 2,995,909 2,866,330 129,580
969 581/LOAD DISPATCHING D60 4,166,909 4,009,091 157,818
970 582/STATION EXPENSES L 171 983,432 942,010 41,422
971 583/OVERHEAD LINE EXPENSES L 176+177 3,611,849 3,348,590 263,259
972 584/UNDERGROUND LINE EXPENSES L 178+179 1,372,655 1,352,128 20,527
973 585/STREET LIGHTING&SIGNAL SYSTEMS L 184 20,365 19,552 813
974 586/METER EXPENSES L 182 4,176,379 4,041,475 134,904
975 587/CUSTOMER INSTALLATIONS EXPENSE L 183 736,676 685,851 50,825
976 588/MISCELLANEOUS EXPENSES L 563 2,911,186 2,786,499 124,688
977 589/RENTS L 186 0 0 0
978 TOTAL DISTRIBUTION OPERATION 20,975,360 20,051,526 923,834
979
980 MAINTENANCE
981 590/SUPERVISION&ENGINEERING L 186 9,353 8,948 405
982 591/STRUCTURES L167 0 0 0
983 592/STATION EQUIPMENT L 171 2,716,642 2,602,218 114,424
984 593/OVERHEAD LINES L 176+177 5,201,009 4,821,920 379,089
985 594/UNDERGROUND LINES L 178+179 304,799 300,241 4,558
986 595/LINE TRANSFORMERS L 180 25,793 24,370 1,423
987 596/STREET LIGHTING&SIGNAL SYSTEMS L 184 123,794 118,851 4,943
988 597/METERS L 182 678,112 656,208 21,904
989 598/MISCELLANEOUS PLANT L 186 79,964 76,506 3,459
990 TOTAL DISTRIBUTION MAINTENANCE 9,139,466 8,609,262 530,204
991 TOTAL DISTRIBUTION EXPENSES 30,114,827 28,660,788 1,454,039
992
993 CUSTOMER ACCOUNTING EXPENSES
994 901/SUPERVISION L 995 705,017 610,646 94,371
995 902/METER READING CW902 1,267,888 1,098,173 169,715
996 903/CUSTOMER RECORDS&COLLECTIONS CW903 9,731,713 9,412,221 319,492
997 904/UNCOLLECTIBLE ACCOUNTS CW904 0 0 0
998 905/MISC EXPENSES L 995-997 0 0 0
999 TOTAL CUSTOMER ACCOUNTING EXPENSES 11,704,618 11,121,040 583,577
1000
1001 CUSTOMER SERVICES&INFORMATION EXPENSES
1002 907/SUPERVISION L 1006 828,671 807,168 21,503
1003 908/CUSTOMER ASSISTANCE L 575 4,679,331 4,557,909 121,422
1004 908/ENERGY EFFICIENCY RIDER CIDA 0 0 0
1005 909/INFORMATION&INSTRUCTIONAL L 579 0 0 0
1006 910/MISCELLANEOUS EXPENSES L 1003+1005 308,799 300,787 8,013
1007 TOTAL CUST SERV&INFORMATN EXPENSES 5,816,801 5,665,863 150,938
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 29 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1008 TABLE 13-DEVELOPMENT OF LABOR RELATED ALLOCATOR
1009 ADMINISTRATIVE&GENERAL EXPENSES
1010 920/ADMINISTRATIVE&GENERAL SALARIES PTDCAS 53,511,744 51,204,117 2,307,628
1011 921/OFFICE SUPPLIES PTDCAS 228,890 219,019 9,871
1012 922/ADMIN&GENERAL EXPENSES TRANSFERRED-CR SUBEX 0 0 0
1013 923/OUTSIDE SERVICES PTDCAS 0 0 0
1014 924/PROPERTY INSURANCE 0
1015 PRODUCTION-STEAM L 121 0 0 0
1016 ALL RISK&MISCELLANEOUS P110P 378,934 363,177 15,757
1017
1018 925/INJURIES&DAMAGES LABOR 132,355 126,648 5,707
1019 926/EMPLOYEE PENSIONS&BENEFITS LABOR 0 0 0
1020 927/FRANCHISE REQUIREMENTS CIDA 0 0 0
1021 928/REGULATORY COMMISSION EXPENSES
1022 928.101/FERC ADMIN ASSESS&SECURITIES
1023 CAPACITY RELATED D10 0 0 0
1024 ENERGY RELATED E10 0 0 0
1025 928.101 I FERC ORDER 472 E99 0 0 0
1026 928.101/FERC MISCELLANIOUS L RESREV 0 0 0
1027 928.102 FERC RATE CASE RESREV 0 0 0
1028 928.104/FERC OREGON HYDRO RESREV 0 0 0
1029 SEC EXPENSES L 202 0 0 0
1030 928.202/IDAHO PUC -RATE CASE CIDA 0 0 0
1031 928.203/IDAHO PUC-OTHER CIDA 0 0 0
1032 928.301/OREGON PUC-FILING FEES CODA 0 0 0
1033 928.302/OREGON PUC-RATE CASE CODA 0 0 0
1034 928.303/OREGON PUC-OTHER CODA 0 0 0
1035 IPC/PUC JSS TRUE-UP ADJ PTD 0 0 0
1036 TOTAL ACCOUNT 928 0 0
1037 929/DUPLICATE CHARGES SUBEX 0 0 0
1038 930.1/GENERAL ADVERTISING RELAB 0 0 0
1039 930.2/MISCELLANEOUS EXPENSES PTDCAS 214,755 205,494 9,261
1040 931/RENTS L 200 0 0 0
1041 TOTAL ADM&GEN OPERATION 54,466,679 52,118,455 2,348,224
1042 PLUS:
1043 935/GENERAL PLANT MAINTENANCE P3908 1,038,440 994,452 43,988
1044 416/MERCHANDISING EXPENSE E10 0 0 0
1045 TOTAL OPER&MAINT EXPENSES 162,547,550 155,539,266 7,008,284
1046 TOTAL LABOR-RATIO(%) 100.00% 95.69% 4.31%
1047
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 30 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1048 TABLE 14-ALLOCATION FACTORS
1049
1050 CAPACITY RELATED KW
1051 PRODUCTION RELATED COINCIDENT PEAKS @ GEN LEVEL D10 2,585,316 2,479,852 105,465
1052 SYSTEM TRANSMISSION SERVICE @ GENERATION LEVEL D11 2,585,316 2,479,852 105,465
1053 RETAIL TRANSMISSION SERVICE @ GENERATION LEVEL D12 2,585,316 2,479,852 105,465
1054 DISTRIBUTION SERVICE @ GENERATION LEVEL D60 2,431,714 2,339,615 92,099
1055
1056 ENERGY RELATED MWH
1057 GENERATION LEVEL(PSP) E10 16,783,429 16,039,716 743,713
1058 CUSTOMER LEVEL E99 15,740,718 15,039,426 701,292
1059
1060 CUSTOMER RELATED FACTORS
1061 902-CUSTOMER WEIGHTED CW902 1,819,788 1,576,198 243,590
1062 903-CUSTOMER WEIGHTED CW903 15,041,849 14,548,026 493,823
1063 904-CUSTOMER WEIGHTED CW904 2,751,851 2,564,962 186,889
1064 909-DIRECT ASSIGN-AVG.NO.CUST. DA909 610,567 590,862 19,705
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 31 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1065 TABLE 14-ALLOCATION FACTORS
1066
1067 DIRECT ASSIGNMENTS (red font denotes allocator comes from Plant 1
1068 252-CUSTOMER ADVANCES DA252 13,139,360 13,043,126 96,234
1069 350-LAND&LAND RIGHTS DA350 0 0 0
1070 352-STRUCTURES&IMPROVEMENTS DA352 658 0 658
1071 353-STATION EQUIPMENT DA353 111,594 75,100 36,494
1072 354-TOWERS&FIXTURES DA354 0 0 0
1073 355-POLES&FIXTURES DA355 33,842 0 33,842
1074 356-OVERHEAD CONDUCTORS&DEVICES DA356 26,495 1,189 25,306
1075 359-ROADS&TRAILS DA359 0 0 0
1076 360LAND&LAND RIGHTS ACCT360 7,818,143 7,549,162 268,981
1077 360LAND&LAND RIGHTS-CIAC ACCT360CIAC 430,656 430,355 301
1078 361-STRUCTURES&IMPROVEMENTS ACCT361 52,245,201 49,776,238 2,468,963
1079 361-STRUCTURES&IMPROVEMENTS-CIAC ACCT361CIAC 8,009,324 7,447,616 561,708
1080 362-STATION EQUIPMENT ACCT362 300,357,806 287,706,828 12,650,978
1081 362-STATION EQUIPMENT-CIAC ACCT362CIAC 38,463,951 34,892,876 3,571,075
1082 364-POLES,TOWERS&FIXTURES-NET DA364 313,204,206 288,748,305 24,455,901
1083 365-OVERHEAD CONDUCTORS&DEVICES-NET DA365 155,253,318 146,384,826 8,868,492
1084 366-UNDERGROUND CONDUIT-NET DA366 52,785,315 51,958,505 826,810
1085 367-UNDERGROUND CONDUCTORS&DEVICES-NET DA367 318,155,073 313,429,461 4,725,612
1086 368-LINE TRANSFORMERS DA368 704,959,938 666,063,582 38,896,356
1087 369-DIRECT ASSIGNMENT DA369 67,920,301 65,262,678 2,657,623
1088 370-METERS DA370 112,940,727 109,292,546 3,648,181
1089 371-INSTALLATIONS ON CUSTOMER PREMISES-NET DA371 4,931,439 4,591,211 340,228
1090 373-STREET LIGHTING SYSTEMS-NET DA373 5,706,749 5,478,881 227,868
1091 451-REVENUE-MISCELLANEOUS SERVICE DA451 4,936,204 4,890,357 45,847
1092 454-REVENUE-FACILITIES CHARGE DA454 10,470,031 10,041,240 428,792
1093 908-OTHER CUSTOMER ASSISTANCE DA908 6,971,635 6,790,730 180,904
1094 440-RETAIL SALES REVENUE RETREV 5,491,025 5,491,025 0
1095 447-WHOLESALE SALES REVENUE RESREV 0 0 0
1096 456-REVENUE-STANDBY SERVICE DASTNBY 1 1 0
1097 440-REVENUE OFFSET FOR PLANT ADDITIONS DAREV 1 1 0
1098 IDAHO C I DA 1 1 0
1099 OREGON CODA 1 0 1
1100 NET TO GROSS TAX MULTIPLIER DA990 1.347 1.347 1.347
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 32 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1101 TABLE 14-ALLOCATION FACTORS
1102
1103 INTERNALLY DEVELOPED ALLOCATION FACTORS
1104 PLANT-PROD,TRANS&DIST PTD 756,246,797 724,212,263 32,034,534
1105 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS PTDCAS 107,042,430 102,426,358 4,616,072
1106 PLANT-HYDRO,OTHER,TSUBS,DSUBS&GP P110P 271,935,533 260,627,596 11,307,937
1107 PLANT-GEN PLT(390,391,397&398) P3908 29,201,032 27,964,079 1,236,953
1108 PLANT-PROD,TRANS,DIST&GEN P101 P 822,387,553 787,551,303 34,836,249
1109 O&M-PROD,TRANS,DIST,CUSTACCT&CSIS SUBEX 11,894,161 11,426,039 468,121
1110 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS RELAB 271,935,533 260,627,596 11,307,937
1111 LAB-ALL LABOR WITHOUT 925-6 "CIRC LABOR 161,161,999 154,212,672 6,949,328
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 33 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1112 TABLE 15-ALLOCATION FACTORS-RATIOS
1113
1114 CAPACITY RELATED KW
1115 PRODUCTION RELATED COINCIDENT PEAKS @ GEN LEVEL D10 100.00% 95.92% 4.08%
1116 SYSTEM TRANSMISSION SERVICE @ GENERATION LEVEL D11 100.00% 95.92% 4.08%
1117 RETAIL TRANSMISSION SERVICE @ GENERATION LEVEL D12 100.00% 95.92% 4.08%
1118 DISTRIBUTION SERVICE @ GENERATION LEVEL D60 100.00% 96.21% 3.79%
1119
1120 ENERGY RELATED MWH
1121 GENERATION LEVEL(PSP) E10 100.00% 95.57% 4.43%
1122 CUSTOMER LEVEL E99 100.00% 95.54% 4.46%
1123
1124 CUSTOMER RELATED FACTORS
1125 369-DIRECT ASSIGNMENT DA369 100.00% 96.09% 3.91%
1126 370-METERS DA370 100.00% 96.77% 3.23%
1127 902-CUSTOMER WEIGHTED CW902 100.00% 86.61% 13.39%
1128 903-CUSTOMER WEIGHTED CW903 100.00% 96.72% 3.28%
1129 904-CUSTOMER WEIGHTED CW904 100.00% 93.21% 6.79%
1130 909-DIRECT ASSIGN-AVG.NO.CUST. DA909 100.00% 96.77% 3.23%
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 34 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOC/ TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1131 TABLE 15-ALLOCATION FACTORS-RATIOS
1132
1133 DIRECT ASSIGNMENTS
1134 252-CUSTOMER ADVANCES DA252 100.00% 99.27% 0.73%
1135 350-LAND&LAND RIGHTS DA350 #DIV/O! #DIV/O! #DIV/0I
1136 352-STRUCTURES&IMPROVEMENTS DA352 100.00% 0.00% 100.00%
1137 353-STATION EQUIPMENT DA353 100.00% 67.30% 32.70%
1138 354-TOWERS&FIXTURES DA354 #DIV/O! #DIV/O! #DIV/O!
1139 355-POLES&FIXTURES DA355 100.00% 0.00% 100.00%
1140 356-OVERHEAD CONDUCTORS&DEVICES DA356 100.00% 4.49% 95.51%
1141 359-ROADS&TRAILS DA359 #DIV/O! #DIV/O! #DIV/0!
1142 360LAND&LAND RIGHTS-DA DA360 100.00% 96.56% 3.44%
1143 360LAND&LAND RIGHTS-CIAC DA360C 100.00% 99.93% 0.07%
1144 361-STRUCTURES&IMPROVEMENTS-DA DA361 100.00% 95.27% 4.73%
1145 361-STRUCTURES&IMPROVEMENTS-CIAC DA361C 100.00% 92.99% 7.01%
1146 362-STATION EQUIPMENT-DA DA362 100.00% 95.79% 4.21%
1147 362-STATION EQUIPMENT-CIAC DA362C 100.00% 90.72% 9.28%
1148 364-POLES,TOWERS&FIXTURES-NET DA364 100.00% 92.19% 7.81%
1149 365-OVERHEAD CONDUCTORS&DEVICES-NET DA365 100.00% 94.29% 5.71%
1150 366-UNDERGROUND CONDUIT-NET DA366 100.00% 98.43% 1.57%
1151 367-UNDERGROUND CONDUCTORS&DEVICES-NET DA367 100.00% 98.51% 1.49%
1152 368-LINE TRANSFORMERS DA368 100.00% 94.48% 5.52%
1153 371-INSTALLATIONS ON CUSTOMER PREMISES-NET DA371 100.00% 93.10% 6.90%
1154 373-STREET LIGHTING SYSTEMS-NET DA373 100.00% 96.01% 3.99%
1155 451-REVENUE-MISCELLANEOUS SERVICE DA451 100.00% 99.07% 0.93%
1156 454-REVENUE-FACILITIES CHARGE DA454 100.00% 95.90% 4.10%
1157 908-OTHER CUSTOMER ASSISTANCE DA908 100.00% 97.41% 2.59%
1158 440-RETAIL SALES REVENUE RETREV 100.00% 100.00% 0.00%
1159 447-WHOLESALE SALES REVENUE RESREV #DIV/O! #DIV/O! #DIV/0I
1160 456-REVENUE-STANDBY SERVICE DASTNBY 100.00% 100.00% 0.00%
1161 440-REVENUE OFFSET FOR PLANT ADDITIONS DAREV 100.00% 100.00% 0.00%
1162 IDAHO CIDA 100.00% 100.00% 0.00%
1163 OREGON CODA 100.00% 0.00% 100.00%
1164 NET TO GROSS TAX MULTIPLIER DA990 1.347 1.347 1.347
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 35 of 36

IDAHO POWER COMPANY
JURISDICTIONAL SEPARATION STUDY
IDAHO REVENUE REQUIREMENT-INCREMENTAL 2024 RATEBASE AND LABOR
FOR THE TEST YEAR ENDING DECEMBER 31,2024
2 ALLOCI TOTAL IDAHO
3 DESCRIPTION SOURCE SYSTEM RETAIL OTHER
1165 TABLE 15-ALLOCATION FACTORS-RATIOS
1166
1167 INTERNALLY DEVELOPED ALLOCATION FACTORS
1168 PLANT-PROD,TRANS&DIST PTD 100.00% 95.76% 4.24%
1169 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS PTDCAS 100.00% 95.69% 4.31%
1170 PLANT-HYDRO,OTHER,TSUBS,DSUBS&GP P110P 100.00% 95.84% 4.16%
1171 PLANT-GEN PLT(390,391,397&398) P3908 100.00% 95.76% 4.24%
1172 PLANT-PROD,TRANS,DIST&GEN P101 P 100.00% 95.76% 4.24%
1173 O&M-PROD,TRANS,DIST,CUST ACCT&CSIS SUBEX 100.00% 96.06% 3.94%
1174 LAB-PROD,TRANS,DIST,CUST ACCT&CSIS RELAB 100.00% 95.84% 4.16%
1175 LAB-ALL LABOR WITHOUT 925-6 "CIRC" LABOR 100.00% 95.69% 4.31%
Exhibit No.10
Case No.IPC-E-24-07
M.Larkin,IPC
2024 Page 36 of 36