Earnings Per Share - Reconciliation of Numerator and Denominator of Basic Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Basic and diluted:
Net loss attributable to Greenbacker Renewable Energy Company LLC	$ (15,586)	$ (8,479)
Weighted average common shares outstanding used in computing net loss per share—basic (in shares)	199,333	198,856
Weighted average common shares outstanding used in computing net loss per share—diluted (in shares)	199,333	198,856
Net loss per share—basic (in dollars per share)	$ (0.08)	$ (0.04)
Net loss per share—diluted (in dollars per share)	$ (0.08)	$ (0.04)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Greenbacker Renewable Energy Co LLC 10-Q