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REVENUES:
 9 Months Ended
Sep. 30, 2026
Revenues [Abstract]  
REVENUES: REVENUES
 
The following table provides a summary of electric utility operating revenues for IDACORP and Idaho Power (in thousands of dollars):
Three months ended
September 30,		Nine months ended
September 30,
2026202520262025
Revenue from contracts with customers$614,841 $526,424 $1,466,707 $1,386,879 
Alternative revenue programs and other revenues(7,804)(2,875)11,765 18,294 
Total electric utility operating revenues$607,037 $523,549 $1,478,472 $1,405,173 
Revenues from Contracts with Customers

The following table presents revenues from contracts with customers disaggregated by revenue source (in thousands of dollars):
Three months ended
September 30,		Nine months ended
September 30,
2026202520262025
Retail revenues:
Residential (includes $(7,811), $(4,125), $8,674, and $(9,194), respectively, related to the FCA)(1)
$235,900 $195,445 $608,260 $535,505 
Commercial (includes $(58), $(70), $137, and $(150), respectively, related to the FCA)(1)
123,946 111,510 319,374 304,014 
Industrial91,278 72,079 236,963 205,526 
Irrigation115,648 101,690 214,895 195,172 
Deferred revenue related to HCC relicensing AFUDC(2)
(12,605)(2,854)(30,240)(6,848)
Total retail revenues554,167 477,870 1,349,252 1,233,369 
Less: FCA mechanism revenues(1)
7,869 4,195 (8,811)9,344 
Wholesale energy sales16,957 10,520 25,328 45,443 
Transmission wheeling-related revenues18,476 17,856 51,347 53,624 
Energy efficiency program revenues8,011 7,460 20,293 18,808 
Other revenues from contracts with customers9,361 8,523 29,298 26,291 
Total revenues from contracts with customers$614,841 $526,424 $1,466,707 $1,386,879 
(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" to the consolidated financial statements included in the 2025 Annual Report. 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

While revenues from contracts with customers make up most of Idaho Power’s revenues, the IPUC has authorized the use of an additional regulatory mechanism, the FCA mechanism, which may increase or decrease tariff-based retail customer rates. The FCA mechanism is described in Note 3 - "Regulatory Matters." The FCA mechanism revenues include only the initial recognition of FCA revenues when they meet the regulator-specified conditions for recognition. Revenue from contracts with customers excludes the portion of the tariff price representing FCA revenues that Idaho Power initially recorded in prior periods when revenues met regulator-specified conditions. When Idaho Power includes those amounts in the price of utility service and billed to customers, Idaho Power records such amounts as recovery of the associated regulatory asset or liability and not as revenues.

Derivative revenues include gains from settled electricity swaps and sales of electricity under forward sales contracts that are bundled with renewable energy credits. Related to these forward sales, Idaho Power simultaneously enters into forward purchases of electricity for the same quantity at the same location, which are recorded in purchased power on the condensed consolidated statements of income. For more information on settled electricity swaps, see Note 11 - "Derivative Financial Instruments."

The table below presents the FCA mechanism revenues and other revenues (in thousands of dollars):
Three months ended
September 30,		Nine months ended
September 30,
2026202520262025
FCA mechanism revenues$(7,869)$(4,195)$8,811 $(9,344)
Derivative revenues65 1,320 2,954 27,638 
Total alternative revenue programs and other revenues$(7,804)$(2,875)$11,765 $18,294 
Receivables and Allowance for Uncollectible Accounts

The following table provides a rollforward of the allowance for uncollectible accounts related to customer receivables (in thousands of dollars):
Nine months ended
September 30,
20262025
Balance at beginning of period$3,788 $5,071 
Additions to the allowance3,993 2,658 
Write-offs, net of recoveries(2,720)(3,388)
Balance at end of period$5,061 $4,341 
Allowance for uncollectible accounts as a percentage of customer receivables3.0 %3.0 %