XML 118 R91.htm IDEA: XBRL DOCUMENT v3.25.4
COMMITMENTS: Commitments Level 4 (Details)
 12 Months Ended 40 Months Ended
Dec. 31, 2025
USD ($)
MWh
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Feb. 29, 2032
Nov. 01, 2028
USD ($)
Dec. 31, 2027
MWh
Long-term Purchase Commitment            
Purchased power $ 392,462,000 $ 425,082,000 $ 501,531,000      
Maximum | Subsequent Event | Energy and Capacity            
Long-term Purchase Commitment            
Long-term Purchase Commitment, Period       3 years    
Bridger Coal Company            
Long-term Purchase Commitment            
IERCo guarantee of BCC reclamation obligation 150,200,000          
Idaho Power Company            
Long-term Purchase Commitment            
Purchased power 392,462,000 425,082,000 501,531,000      
IERCo guarantee of BCC reclamation obligation $ 50,100,000          
Idaho Power Company | PURPA and Non-PURPA Online            
Long-term Purchase Commitment            
Nameplate Capacity (in MW) | MWh 1,724          
Idaho Power Company | Subsequent Event | Energy and Capacity            
Long-term Purchase Commitment            
Purchase Obligation         $ 14,400,000  
Idaho Power Company | Joint-operating agreement payment [Member]            
Long-term Purchase Commitment            
Purchase Obligation Estimated Due Current [1] $ 2,983,000          
Purchase Obligation Estimated Future Payments Due In Two Years [1] 2,983,000          
Purchase Obligation Estimated Future Payments Due In Three Years [1] 2,983,000          
Purchase Obligation Estimated Future Payments Due In Four Years [1] 2,983,000          
Purchase Obligation Estimated Future Payments Due In Five Years [1] 2,983,000          
Purchase Obligation Estimated Future Payments Due In Six Years And Thereafter [1] 14,914,000          
Idaho Power Company | Easements and Other payments [Member]            
Long-term Purchase Commitment            
Purchase Obligation Estimated Due Current [1] 2,322,000          
Purchase Obligation Estimated Future Payments Due In Two Years [1] 2,371,000          
Purchase Obligation Estimated Future Payments Due In Three Years [1] 2,421,000          
Purchase Obligation Estimated Future Payments Due In Four Years [1] 2,472,000          
Purchase Obligation Estimated Future Payments Due In Five Years [1] 2,523,000          
Purchase Obligation Estimated Future Payments Due In Six Years And Thereafter [1] 13,435,000          
Idaho Power Company | Maintenance, service, and materials agreements            
Long-term Purchase Commitment            
Purchase Obligation Estimated Due Current [1],[2] 479,388,000          
Purchase Obligation Estimated Future Payments Due In Two Years [1],[2] 110,347,000          
Purchase Obligation Estimated Future Payments Due In Three Years [1],[2] 312,155,000          
Purchase Obligation Estimated Future Payments Due In Four Years [1],[2] 36,558,000          
Purchase Obligation Estimated Future Payments Due In Five Years [1],[2] 8,327,000          
Purchase Obligation Estimated Future Payments Due In Six Years And Thereafter [1] 41,237,000          
Idaho Power Company | FERC and other industry-related fees            
Long-term Purchase Commitment            
Purchase Obligation Estimated Due Current [1] 17,898,000          
Purchase Obligation Estimated Future Payments Due In Two Years [1] 17,106,000          
Purchase Obligation Estimated Future Payments Due In Three Years [1] 16,962,000          
Purchase Obligation Estimated Future Payments Due In Four Years [1] 16,908,000          
Purchase Obligation Estimated Future Payments Due In Five Years [1] 17,391,000          
Purchase Obligation Estimated Future Payments Due In Six Years And Thereafter [1] 85,255,000          
Idaho Power Company | Cogeneration, power production, battery storage, and transmission rights            
Long-term Purchase Commitment            
Purchase Obligation Estimated Due Current 350,046,000          
Purchase Obligation Estimated Future Payments Due In Two Years 383,878,000          
Purchase Obligation Estimated Future Payments Due In Three Years 427,829,000          
Purchase Obligation Estimated Future Payments Due In Four Years 428,270,000          
Purchase Obligation Estimated Future Payments Due In Five Years 425,584,000          
Purchase Obligation Estimated Future Payments Due In Six Years And Thereafter 3,710,029,000          
Idaho Power Company | Fuel purchase commitments            
Long-term Purchase Commitment            
Purchase Obligation Estimated Due Current 191,035,000          
Purchase Obligation Estimated Future Payments Due In Two Years 159,806,000          
Purchase Obligation Estimated Future Payments Due In Three Years 96,773,000          
Purchase Obligation Estimated Future Payments Due In Four Years 45,314,000          
Purchase Obligation Estimated Future Payments Due In Five Years 46,063,000          
Purchase Obligation Estimated Future Payments Due In Six Years And Thereafter $ 498,929,000          
Idaho Power Company | Cogeneration And Power Production Purchase Commitment Member | Minimum            
Long-term Purchase Commitment            
Long-term Purchase Commitment, Period 1 year          
Idaho Power Company | Cogeneration And Power Production Purchase Commitment Member | Maximum            
Long-term Purchase Commitment            
Long-term Purchase Commitment, Period 35 years          
Idaho Power Company | Long-Term Power Production Purchase Commitment            
Long-term Purchase Commitment            
Purchased power $ 306,000,000 $ 294,000,000 $ 258,000,000      
Idaho Power Company | Contracts to Acquire and Own Transmission and Generation            
Long-term Purchase Commitment            
Purchase Obligation 481,000,000          
IDACORP [Member]            
Long-term Purchase Commitment            
Long-term Purchase Commitment, Amount 2,800,000          
IDACORP [Member] | Affordable housing limited partnership and other real estate tax credit investments            
Long-term Purchase Commitment            
Long-term Purchase Commitment, Amount 21,400,000          
Forecast | Idaho Power Company | PURPA and Non-PURPA Online            
Long-term Purchase Commitment            
Nameplate Capacity (in MW) | MWh           625
Contracts with no expiration [Member] | Idaho Power Company | Joint-operating agreement payment [Member]            
Long-term Purchase Commitment            
Purchase Obligation 30,000,000          
Contracts with no expiration [Member] | Idaho Power Company | Easements and Other payments [Member]            
Long-term Purchase Commitment            
Purchase Obligation 1,000,000          
Contracts with no expiration [Member] | Idaho Power Company | Maintenance, service, and materials agreements            
Long-term Purchase Commitment            
Purchase Obligation 16,000,000          
Contracts with no expiration [Member] | Idaho Power Company | FERC and other industry-related fees            
Long-term Purchase Commitment            
Purchase Obligation $ 170,000,000          
[1] Approximately $30 million, $1 million, $16 million, and $170 million of the commitments included in joint-operating agreement payments, easements and other payments, maintenance, service, and materials agreements, and FERC and other industry-related fees, respectively, have contracts that do not specify terms related to expiration. As these contracts are presumed to continue indefinitely, ten years of information, estimated based on current contract terms, has been included in the table for presentation purposes.
[2] As of December 31, 2025, Idaho Power had a remaining $481 million commitment related to contracts to acquire and own transmission and generation resources with in-service dates in 2028 and 2030.