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Related Party Transactions - Related Party Transactions and Balances (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
loan
Dec. 31, 2023
loan
Dec. 31, 2024
USD ($)
Related Party Transaction [Line Items]      
Accounts receivable [1],[2] $ 371,796   $ 335,841
Contract assets, current [3] 178,928   145,162
Prepaid expenses and other current assets [1],[4] 49,805   46,203
Investments in unconsolidated affiliates [5] 10,037   0
Operating lease right-of-use assets [1],[6] 108,541   122,489
Contract assets, non-current [7] 62,258   0
Other long-term assets [1],[8] 57,203   46,136
Accrued warranty [9] 20,013   16,559
Accrued expenses and other current liabilities [1],[10] 222,254   138,450
Deferred revenue and customer deposits, current [11] 100,975   243,314
Operating lease liabilities, current [1],[12] 22,000   19,642
Operating lease liabilities, non-current [1],[13] 106,935   124,523
Non-recourse debt 2,617,879   1,128,792
Deferred profit in transactions with unconsolidated affiliates [14] $ 13,928   0
SK Ecoplant | Korean Joint Venture      
Related Party Transaction [Line Items]      
Number of term loans | loan 2 2  
Related Party      
Related Party Transaction [Line Items]      
Accounts receivable $ 151,932   93,510
Contract assets, current 2,967   800
Prepaid expenses and other current assets 1,247   1,215
Investments in unconsolidated affiliates 10,037   0
Operating lease right-of-use assets 0   1,385
Contract assets, non-current 48,763   0
Other long-term assets 5,968   8,776
Accrued warranty 799   1,205
Accrued expenses and other current liabilities 39   3,989
Deferred revenue and customer deposits, current 6,879   8,857
Operating lease liabilities, current 0   442
Deferred revenue and customer deposits, long-term 0   3,335
Operating lease liabilities, non-current 0   977
Non-recourse debt 0   4,057
Deferred profit in transactions with unconsolidated affiliates 13,928   0
Related Party | SK Ecoplant      
Related Party Transaction [Line Items]      
Non-recourse debt $ 0   $ 4,100
[1] We have variable interest entity related to a joint venture in the Republic of Korea (see Note 12—Related Party Transactions in this Annual Report on Form 10-K), which represents a portion of the consolidated balances recorded within these financial statement line items.
[2] Including amounts from related parties of $151.9 million and $93.5 million as of December 31, 2025 and 2024, respectively.
[3] Including amounts from related parties of $3.0 million and $0.8 million as of December 31, 2025 and 2024, respectively.
[4] Including amount from related parties of $1.2 million and $1.2 million as of December 31, 2025 and 2024, respectively.
[5] Represent related party investments in Fund JVs (see Note 7—Investments in Unconsolidated Affiliates in this Annual Report on Form 10-K).
[6] Including amount from related parties of $1.4 million as of December 31, 2024. There was no related party balance as of December 31, 2025.
[7] Including amount from related parties of $48.8 million as of December 31, 2025. There was no related party balance as of December 31, 2024.
[8] Including amounts from related parties of $6.0 million and $8.8 million as of December 31, 2025 and 2024, respectively
[9] Including amounts from related parties of $0.8 million and $1.2 million as of December 31, 2025 and 2024, respectively.
[10] Including amounts from related parties of $0.04 million and $4.0 million as of December 31, 2025 and 2024, respectively.
[11] Including amounts from related parties of $6.9 million and $8.9 million as of December 31, 2025 and 2024, respectively.
[12] Including amounts from related parties of $0.4 million as of December 31, 2024. There was no related party balance as of December 31, 2025.
[13] Including amounts from related parties of $1.0 million as of December 31, 2024. There was no related party balance as of December 31, 2025.
[14] Represent the excess of unrealized profit from sales to the Fund JVs over the carrying value of the related equity‑method investments (see Note 7—Investments in Unconsolidated Affiliates in this Annual Report on Form 10-K).