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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net loss $ (37,760) $ (35,653) $ (65,274) $ (76,307)
Other comprehensive loss, net of tax        
Amortization on derivatives previously designated as hedges and other changes in Accumulated other comprehensive income (loss), net of tax (794) (1,576) (1,589) (2,823)
Total other comprehensive income (loss), net of tax (794) (1,576) (1,589) (2,823)
Comprehensive loss (38,554) (37,229) (66,863) (79,130)
Less: Comprehensive income (loss) attributable to Noncontrolling interests (49,080) (1,985) (49,268) (27,053)
Comprehensive income (loss) attributable to Greenbacker Renewable Energy Company LLC $ 10,526 $ (35,244) $ (17,595) $ (52,077)