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Non-Recourse Debt - Narrative (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 10, 2022	Nov. 13, 2020	Dec. 31, 2023	Aug. 18, 2023	Dec. 31, 2022	Mar. 19, 2021
Debt Instrument [Line Items]
Less: Unamortized deferred financing costs			$ (341)		$ 0
Second SBV Credit Agreement
Debt Instrument [Line Items]
Principal balance				$ 21,400
Unamortized debt issuance costs				400
Less: Unamortized deferred financing costs				(300)
Secured Debt \| A&R SVB Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC \| Legacy Spruce Power
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate, years four through six			2.375%
Interest rate as of period end			7.96%
Debt instrument, basis spread on variable rate, after year six			2.50%
Secured Debt \| A&R SVB Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC \| Secured Overnight Financing Rate (SOFR) \| Legacy Spruce Power
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate, years one through three			2.25%
Secured Debt \| Second SBV Credit Agreement \| Secured Overnight Financing Rate (SOFR) \| Legacy Spruce Power
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate, years one through three			2.30%
Debt instrument, basis spread on variable rate, years four through six			2.425%
Debt instrument, basis spread on variable rate, after year six			2.55%
Secured Debt \| Second SBV Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC \| Legacy Spruce Power
Debt Instrument [Line Items]
Interest rate as of period end			8.04%
Secured Debt \| Deutsche Bank AG Credit Agreement \| SET Borrower 2022, LLC
Debt Instrument [Line Items]
Principal balance	$ 125,000
Secured Debt \| Deutsche Bank AG Credit Agreement \| SET Borrower 2022, LLC \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Interest rate as of period end			7.09%
Applicable margin through the first twelve months	2.25%
Applicable margin for months thirteen through eighteen	2.50%
Applicable margin for months nineteen through twenty four	2.75%
Applicable margin after twenty four months through maturity	3.00%
Secured Debt \| KeyBank Credit Agreement \| Secured Overnight Financing Rate (SOFR) \| Legacy Spruce Power
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate, years one through three		3.00%
Debt instrument, basis spread on variable rate, years three through five		3.125%
Debt instrument, basis spread on variable rate, after year five		3.25%
Secured Debt \| A&R Second KeyBank Credit Agreement \| KWS Solar Term Parent 1 LLC, KWS Solar Term Parent 2 LLC, and KWS Solar Term Parent 2 LLC \| Legacy Spruce Power
Debt Instrument [Line Items]
Interest rate			8.25%			8.25%
Letter of Credit \| A&R SVB Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC \| Legacy Spruce Power
Debt Instrument [Line Items]
Letter of credit facility, outstanding, interest rate			2.25%
Letter of credit facility, unused amounts, interest rate			0.50%
Letter of Credit \| Second SBV Credit Agreement
Debt Instrument [Line Items]
Letter of credit facility, total borrowing capacity				$ 2,700
Letter of Credit \| Second SBV Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC
Debt Instrument [Line Items]
Letter of credit outstanding			$ 7,000
Letter of Credit \| Second SBV Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC \| Legacy Spruce Power
Debt Instrument [Line Items]
Letter of credit facility, outstanding, interest rate			2.30%
Letter of credit facility, unused amounts, interest rate			0.50%
Letter of Credit \| KeyBank Credit Agreement \| Legacy Spruce Power
Debt Instrument [Line Items]
Letter of credit facility, outstanding, interest rate		3.00%
Legacy Spruce Power \| A&R SVB Credit Agreement \| Greenday Finance I, LLC, Volta MH Owner II, LLC, and Spruce Kismet, LLC \| Letter of Credit
Debt Instrument [Line Items]
Principal balance			$ 6,100
Legacy Spruce Power \| Secured Debt \| KeyBank Credit Agreement \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Interest rate as of period end			8.66%
Legacy Spruce Power \| Letter of Credit \| KeyBank Credit Agreement
Debt Instrument [Line Items]
Letter of credit outstanding			$ 4,100