Quarterly report [Sections 13 or 15(d)]

REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details)

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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disaggregation of Revenue [Line Items]        
Revenues $ 472,284 $ 437,982 $ 825,113 $ 736,388
Percentage of revenue recognized over time 96.00% 96.00% 96.00% 95.00%
United States        
Disaggregation of Revenue [Line Items]        
Revenues $ 301,923 $ 349,500 $ 534,536 $ 588,599
Canada        
Disaggregation of Revenue [Line Items]        
Revenues 28,417 15,416 51,968 30,596
Europe        
Disaggregation of Revenue [Line Items]        
Revenues 141,944 73,066 238,609 117,193
Project revenue        
Disaggregation of Revenue [Line Items]        
Revenues 358,088 330,763 609,549 535,047
O&M revenue        
Disaggregation of Revenue [Line Items]        
Revenues 27,955 26,170 52,801 51,505
Energy assets        
Disaggregation of Revenue [Line Items]        
Revenues 62,909 53,416 119,602 96,570
Other        
Disaggregation of Revenue [Line Items]        
Revenues 23,332 27,633 43,161 53,266
North America Regions        
Disaggregation of Revenue [Line Items]        
Revenues 211,185 208,131 389,445 346,416
North America Regions | Project revenue        
Disaggregation of Revenue [Line Items]        
Revenues 174,287 178,742 323,240 294,953
North America Regions | O&M revenue        
Disaggregation of Revenue [Line Items]        
Revenues 10,474 8,511 18,930 15,444
North America Regions | Energy assets        
Disaggregation of Revenue [Line Items]        
Revenues 22,669 19,746 41,639 33,500
North America Regions | Other        
Disaggregation of Revenue [Line Items]        
Revenues 3,755 1,132 5,636 2,519
U.S. Federal        
Disaggregation of Revenue [Line Items]        
Revenues 59,644 86,737 84,891 147,627
U.S. Federal | Project revenue        
Disaggregation of Revenue [Line Items]        
Revenues 37,459 68,080 43,497 111,559
U.S. Federal | O&M revenue        
Disaggregation of Revenue [Line Items]        
Revenues 15,063 14,628 28,793 29,906
U.S. Federal | Energy assets        
Disaggregation of Revenue [Line Items]        
Revenues 6,780 3,724 12,137 5,653
U.S. Federal | Other        
Disaggregation of Revenue [Line Items]        
Revenues 342 305 464 509
Renewable Fuels        
Disaggregation of Revenue [Line Items]        
Revenues 42,819 45,852 80,994 78,711
Renewable Fuels | Project revenue        
Disaggregation of Revenue [Line Items]        
Revenues 7,983 13,884 12,046 17,047
Renewable Fuels | O&M revenue        
Disaggregation of Revenue [Line Items]        
Revenues 1,762 2,136 3,777 4,513
Renewable Fuels | Energy assets        
Disaggregation of Revenue [Line Items]        
Revenues 33,071 29,728 65,168 57,028
Renewable Fuels | Other        
Disaggregation of Revenue [Line Items]        
Revenues 3 104 3 123
Europe        
Disaggregation of Revenue [Line Items]        
Revenues 141,884 73,059 238,541 117,181
Europe | Project revenue        
Disaggregation of Revenue [Line Items]        
Revenues 138,359 70,064 230,766 111,488
Europe | O&M revenue        
Disaggregation of Revenue [Line Items]        
Revenues 656 895 1,301 1,642
Europe | Energy assets        
Disaggregation of Revenue [Line Items]        
Revenues 389 189 658 360
Europe | Other        
Disaggregation of Revenue [Line Items]        
Revenues 2,480 1,911 5,816 3,691
All Other        
Disaggregation of Revenue [Line Items]        
Revenues 16,752 24,203 31,242 46,453
All Other | Project revenue        
Disaggregation of Revenue [Line Items]        
Revenues 0 (7) 0
All Other | O&M revenue        
Disaggregation of Revenue [Line Items]        
Revenues 0 0 0 0
All Other | Energy assets        
Disaggregation of Revenue [Line Items]        
Revenues 0 29 0 29
All Other | Other        
Disaggregation of Revenue [Line Items]        
Revenues $ 16,752 $ 24,181 $ 31,242 $ 46,424