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REVENUES: Electric utility operating revenues (Tables) | 12 Months Ended
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Dec. 31, 2025
Electric utility operating revenues [Line Items] |
Electric utility operating revenues | The following table provides a summary of electric utility operating revenues for IDACORP and Idaho Power (in thousands of dollars):
|  | Year Ended December 31,
|  | 2025 |  | 2024 |  | 2023
Electric utility operating revenues: |  |  |  |  |  |
Revenue from contracts with customers |  | $ | 1,746,972 |  |  | $ | 1,768,881 |  |  | $ | 1,639,612 |
Alternative revenue programs and derivative revenues |  | 62,637 |  |  | 54,084 |  |  | 123,282 |
Total electric utility operating revenues |  | $ | 1,809,609 |  |  | $ | 1,822,965 |  |  | $ | 1,762,894 |
Disaggregation of Revenue | Revenues from contracts with customers are primarily related to Idaho Power’s regulated tariff-based sales of energy or related services. Generally, tariff-based sales do not involve a written contract, but are classified as revenues from contracts with customers. Idaho Power assesses revenues on a contract-by-contract basis to determine the nature, amount, timing, and uncertainty, if any, of revenues being recognized. The following table presents revenues from contracts with customers disaggregated by revenue source (in thousands of dollars):
|  | Year Ended December 31,
|  | 2025 |  | 2024 |  | 2023
Revenues from contracts with customers: |  |  |  |  |  |
Retail revenues: |  |  |  |  |  |
Residential (includes $3,972, $(2,686), and $37,233, respectively, related to the FCA(1)) |  | $ | 708,126 |  |  | $ | 700,586 |  |  | $ | 684,649 |
Commercial (includes $(76), $(170), and $1,338, respectively, related to the FCA(1)) |  | 394,313 |  |  | 397,385 |  |  | 378,330 |
Industrial |  | 270,571 |  |  | 267,211 |  |  | 244,538 |
Irrigation |  | 198,468 |  |  | 196,401 |  |  | 173,929 |
Deferred revenue related to HCC relicensing AFUDC(2) |  | (15,120) |  |  | (8,803) |  |  | (8,780) |
Total retail revenues |  | 1,556,358 |  |  | 1,552,780 |  |  | 1,472,666 |
Less: FCA mechanism revenues(1) |  | (3,896) |  |  | 2,856 |  |  | (38,571) |
Wholesale energy sales |  | 55,989 |  |  | 73,908 |  |  | 63,421 |
Transmission wheeling-related revenues |  | 72,231 |  |  | 79,173 |  |  | 80,357 |
Energy efficiency program revenues |  | 30,480 |  |  | 27,581 |  |  | 31,948 |
Other revenues from contracts with customers |  | 35,810 |  |  | 32,583 |  |  | 29,791 |
Total revenues from contracts with customers |  | $ | 1,746,972 |  |  | $ | 1,768,881 |  |  | $ | 1,639,612 |
(1) The FCA mechanism is an alternative revenue program in the Idaho jurisdiction and does not represent revenue from contracts with customers. (2) The IPUC allows Idaho Power to recover a portion of the AFUDC on construction work in progress related to the HCC relicensing process in its Idaho jurisdiction, even though the relicensing process is not yet complete and the costs have not been moved to utility plant in service. Effective October 1, 2025, Idaho Power began collecting $38.5 million annually. Prior to October 1, 2025, Idaho Power collected $8.8 million annually. For more information refer to Note 3 - "Regulatory Matters." Amounts collected in the Idaho jurisdiction are recognized as deferred revenue until the license is issued and the accumulated license costs approved for recovery are placed in service.
Alternative revenue programs and other revenues | The table below presents the FCA mechanism revenues and derivative revenues (in thousands of dollars):
|  | Year Ended December 31,
|  | 2025 |  | 2024 |  | 2023
Alternative revenue programs and derivative revenues: |  |  |  |  |  |
FCA mechanism revenues |  | $ | 3,896 |  |  | $ | (2,856) |  |  | $ | 38,571 |
Derivative revenues |  | 58,741 |  |  | 56,940 |  |  | 84,711 |
Total alternative revenue programs and derivative revenues |  | $ | 62,637 |  |  | $ | 54,084 |  |  | $ | 123,282 |

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