Summary of Significant Accounting Policies - Schedule of disaggregation of revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 18,287	$ 18,095
PPA revenues
Disaggregation of Revenue [Line Items]
Revenues	7,519	7,127
SLA revenues
Disaggregation of Revenue [Line Items]
Revenues	7,291	7,922
Solar renewable energy credit revenues
Disaggregation of Revenue [Line Items]
Revenues	1,837	1,535
Government incentives
Disaggregation of Revenue [Line Items]
Revenues	77	24
Servicing revenues
Disaggregation of Revenue [Line Items]
Revenues	0	113
Intangibles amortization, unfavorable solar renewable energy agreements
Disaggregation of Revenue [Line Items]
Revenues	746	443
Other revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 817	$ 931