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financial instruments - Fair values - General (Details) - Level 3 | 6 Months Ended | 12 Months Ended
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Jun. 30, 2026 | Dec. 31, 2025
Wind discount risk |  |
financial instruments |  |
Percentage of electric power pool price | 55.00% | 76.00%
Solar premium risk |  |
financial instruments |  |
Percentage of electric power pool price | 82.00% | 82.00%

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- Definition Represents the percentage of electric power pool price. + References No definition available. + Details
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