v3.25.4

Outstanding Loans and Security Agreements - Non-recourse Debt Facilities Narrative (Details) $ in Thousands, ₩ in Billions |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 05, 2023 USD ($) | Oct. 05, 2023 KRW (₩) | Apr. 11, 2023 USD ($) | Apr. 11, 2023 KRW (₩) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest expense | [1] |  |  |  |  | $ 53,888 | $ 62,636 | $ 108,299
Interest expense debt |  |  |  |  |  | $ 38,100 | $ 37,200 | 27,600
SK Ecoplant |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  | $ 52,800
SK Ecoplant |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Acquisition joint venture fixed interest rate percentage |  | 4.60% | 4.60% | 4.60% | 4.60% |  |  |
Acquisition joint venture term |  | 3 years | 3 years | 3 years | 3 years |  |  |
Payments to acquire interest in joint venture |  | $ 2,800 | ₩ 4.0 | $ 1,400 | ₩ 2.0 |  |  |
[1] | Including related party interest expense of $0.1 million, $0.2 million and $0.1 million for the years ended December 31, 2025, 2024 and 2023, respectively.

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