v3.26.1
Derivative financial instruments - Power Purchase Agreements - Narrative (Details)
 12 Months Ended
Dec. 31, 2024
USD ($)
item
Dec. 31, 2023
item
Dec. 31, 2025
USD ($)
Disclosure of detailed information about hedging instruments [line items]      
Purchase Power Agreements Valuation Day 1 Difference Deferred $ 18,886,000   $ 13,293,000
Purchase Power Agreement Not Held For Hedging [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets 4,763,000   3,079,000
Cash flow hedges      
Disclosure of detailed information about hedging instruments [line items]      
Number Of Purchase Price Agreements | item   4  
At fair value | Purchase Power Agreement Not Held For Hedging [Member]      
Disclosure of detailed information about hedging instruments [line items]      
Derivative financial assets $ 23,649,000   16,372,000
Power Purchase Agreement Hedging Instruments [Member] | Cash flow hedges      
Disclosure of detailed information about hedging instruments [line items]      
Number Of Purchase Price Agreements | item 3 1  
Hedging instrument, liabilities $ 1,635,000   6,857,000
Power Purchase Agreement Hedging Instruments [Member] | At fair value | Cash flow hedges      
Disclosure of detailed information about hedging instruments [line items]      
Hedging instrument, liabilities 1,045,000   8,953,000
Valuation day-1 difference deferred. $ 590,000   $ 2,096,000
Power Purchase Agreement Plant Operations [Member] | Cash flow hedges      
Disclosure of detailed information about hedging instruments [line items]      
Number Of Purchase Price Agreements | item 1 3