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RELATED PARTY TRANSACTIONS:
 12 Months Ended
Dec. 31, 2025
Related Party Transactions [Abstract]  
Related Party Transactions RELATED PARTY TRANSACTIONS
 
IDACORP: Idaho Power performs corporate functions such as financial, legal, and management services for IDACORP and its subsidiaries. Idaho Power charges IDACORP for the costs of these services based on service agreements and other specifically identified costs. For these services, Idaho Power billed IDACORP $1.5 million in 2025, $1.1 million in 2024, and $1.1 million in 2023.

At December 31, 2025 and 2024, Idaho Power had a $3.3 million and $3.2 million payable to IDACORP, respectively, which was included in its accounts payable to affiliates balance on its consolidated balance sheets. At IDACORP, the receivable from Idaho Power is eliminated in consolidation.
 
Ida-West: Idaho Power purchases all of the power generated by four of Ida-West’s 50 percent owned PURPA-qualifying hydropower projects located in Idaho. Idaho Power purchased $9.5 million in 2025, $9.6 million in 2024, and $9.1 million in 2023 of power from Ida-West.