Summary of Significant Accounting Policies - Schedule of Revenues from External Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue, Major Customer [Line Items]
Total revenue	$ 1,609,954	$ 922,191	$ 858,578
Customer agreements and incentives
Revenue, Major Customer [Line Items]
Total revenue	826,564	484,160	387,835
Customer agreements
Revenue, Major Customer [Line Items]
Total revenue	725,220	432,527	345,486
Incentives
Revenue, Major Customer [Line Items]
Total revenue	101,344	51,633	42,349
Solar energy systems and product sales
Revenue, Major Customer [Line Items]
Total revenue	783,390	438,031	470,743
Solar energy systems
Revenue, Major Customer [Line Items]
Total revenue	471,283	269,866	283,429
Products
Revenue, Major Customer [Line Items]
Total revenue	$ 312,107	$ 168,165	$ 187,314