v3.26.1
BUSINESS SEGMENTS - Schedule of Financial Information of Reportable Segments (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting [Line Items]          
Net revenue from external customers $ 258,764 $ 234,018 $ 662,675 $ 463,780  
Depreciation and amortization expenses 79,581 70,030 155,945 139,808  
Gross profit 68,698 56,895 189,067 129,822  
Operating income 34,198 35,318 114,453 86,231  
Segment assets 6,788,245 6,015,612 6,788,245 6,015,612 $ 6,246,508
Expenditures for long-lived assets 138,016 134,824 $ 251,803 327,426  
Number of segment, allocation of other segment items | Segment     2    
Goodwill 168,022   $ 168,022   $ 168,244
Electricity          
Segment Reporting [Line Items]          
Depreciation and amortization expenses 67,104 59,945 132,682 119,921  
Expenditures for long-lived assets 105,887 34,405 166,500 205,755  
Goodwill 163,400 165,800 163,400 165,800  
Electricity | Accounted for Under ASC 606          
Segment Reporting [Line Items]          
Net revenue from external customers 48,800 31,400 97,000 71,500  
Product          
Segment Reporting [Line Items]          
Depreciation and amortization expenses 2,864 2,955 5,522 5,849  
Expenditures for long-lived assets 4,306 1,809 5,673 3,009  
Goodwill 0 0 0 0  
Energy Storage          
Segment Reporting [Line Items]          
Depreciation and amortization expenses 9,612 7,130 17,741 14,037  
Expenditures for long-lived assets 27,823 98,610 79,630 118,662  
Goodwill 4,600 4,600 4,600 4,600  
Energy Storage | Accounted for Under ASC 606          
Segment Reporting [Line Items]          
Net revenue from external customers 10,200 2,500 17,700 6,100  
Operating Segments          
Segment Reporting [Line Items]          
Net revenue from external customers 258,764 234,018 662,675 463,780  
Depreciation and amortization expenses 73,901 67,809 145,023 134,102  
Other cost of revenues expenses 116,165 109,314 328,585 199,856  
Gross profit 68,698 56,895 189,067 129,822  
Segment operating expenses (income) 34,500 21,577 74,614 43,591  
Operating income 34,198 35,318 114,453 86,231  
Operating Segments | Electricity          
Segment Reporting [Line Items]          
Net revenue from external customers 169,253 159,912 350,856 340,153  
Depreciation and amortization expenses 60,975 58,106 120,605 114,976  
Other cost of revenues expenses 68,146 63,130 134,260 126,093  
Gross profit 40,132 38,676 95,991 99,084  
Segment operating expenses (income) 16,441 16,705 30,725 36,270  
Operating income 23,691 21,971 65,266 62,814  
Segment assets 5,765,690 5,225,398 5,765,690 5,225,398  
Operating Segments | Product          
Segment Reporting [Line Items]          
Net revenue from external customers 46,739 59,612 224,122 91,381  
Depreciation and amortization expenses 2,299 2,632 4,415 5,203  
Other cost of revenues expenses 39,918 40,486 177,211 62,599  
Gross profit 4,522 16,494 42,496 23,579  
Segment operating expenses (income) 6,329 6,294 18,382 9,743  
Operating income (1,807) 10,200 24,114 13,836  
Segment assets 300,442 238,082 300,442 238,082  
Operating Segments | Energy Storage          
Segment Reporting [Line Items]          
Net revenue from external customers 42,772 14,494 87,697 32,246  
Depreciation and amortization expenses 10,627 7,071 20,003 13,922  
Other cost of revenues expenses 8,101 5,698 17,114 11,165  
Gross profit 24,044 1,725 50,580 7,159  
Segment operating expenses (income) 11,730 (1,422) 25,506 (2,422)  
Operating income 12,314 3,147 25,074 9,581  
Segment assets 722,113 552,132 722,113 552,132  
Operating Segments | United States          
Segment Reporting [Line Items]          
Net revenue from external customers 164,458 129,434 343,032 284,639  
Operating Segments | United States | Electricity          
Segment Reporting [Line Items]          
Net revenue from external customers 118,963 111,417 250,560 245,631  
Operating Segments | United States | Product          
Segment Reporting [Line Items]          
Net revenue from external customers 2,723 3,523 4,775 6,762  
Operating Segments | United States | Energy Storage          
Segment Reporting [Line Items]          
Net revenue from external customers 42,772 14,494 87,697 32,246  
Operating Segments | Foreign          
Segment Reporting [Line Items]          
Net revenue from external customers 94,306 104,584 319,643 179,141  
Operating Segments | Foreign | Electricity          
Segment Reporting [Line Items]          
Net revenue from external customers 50,290 48,495 100,296 94,522  
Operating Segments | Foreign | Product          
Segment Reporting [Line Items]          
Net revenue from external customers 44,016 56,089 219,347 84,619  
Operating Segments | Foreign | Energy Storage          
Segment Reporting [Line Items]          
Net revenue from external customers 0 0 0 0  
Segment Reconciling Items          
Segment Reporting [Line Items]          
Segment assets 204,154 160,178 204,154 160,178  
Segment Reconciling Items | Electricity          
Segment Reporting [Line Items]          
Segment assets 204,154 160,178 204,154 160,178  
Segment Reconciling Items | Product          
Segment Reporting [Line Items]          
Segment assets 0 0 0 0  
Segment Reconciling Items | Energy Storage          
Segment Reporting [Line Items]          
Segment assets $ 0 $ 0 $ 0 $ 0