Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Schedule of Revenue from External Customers

Revenue from external customers (including, but not limited to homeowners) for each group of similar products and services is as follows (in thousands): 

	Year Ended December 31,
	2023		2022		2021
Customer agreements	$	1,077,099	$	872,298	$	725,220
Incentives	109,607		110,749		101,344
Customer agreements and incentives	1,186,706		983,047		826,564
Solar energy systems	656,408		913,904		471,283
Products	416,699		424,471		312,107
Solar energy systems and product sales	1,073,107		1,338,375		783,390
Total revenue	$	2,259,813	$	2,321,422	$	1,609,954

Schedule of Cash and Restricted Cash

The following table provides a reconciliation of cash and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows. Cash and restricted cash consists of the following (in thousands):

	December 31,
	2023		2022		2021
Cash	$	678,821	$	740,508	$	617,634
Restricted cash, current and long-term	309,017		212,515		232,797
Total	$	987,838	$	953,023	$	850,431

Schedule of Cash and Restricted Cash

The following table provides a reconciliation of cash and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows. Cash and restricted cash consists of the following (in thousands):

	December 31,
	2023		2022		2021
Cash	$	678,821	$	740,508	$	617,634
Restricted cash, current and long-term	309,017		212,515		232,797
Total	$	987,838	$	953,023	$	850,431

Schedule of Accounts Receivable, Net

Accounts receivable, net consists of the following (in thousands):

	December 31,
	2023		2022
Customer receivables	$	186,537	$	218,712
Other receivables	4,506		8,924
Allowance for credit losses	(19,042)		(13,381)
Total	$	172,001	$	214,255

Schedule of Property and Equipment Depreciation

Property and equipment is depreciated on a straight-line basis over the following periods:

Leasehold improvements	Lesser of 6 years or lease term
Furniture	5 years
Computer hardware and software	3 years
Machinery and equipment	5 years or lease term
Automobiles	Lease term

Solar energy systems, net consists of the following (in thousands):

	December 31,
	2023		2022
Solar energy system equipment costs	$	12,558,996	$	10,529,852
Inverters and batteries	1,845,580		1,384,776
Total solar energy systems	14,404,576		11,914,628
Less: accumulated depreciation and amortization	(2,165,171)		(1,682,296)
Add: construction-in-progress	789,466		756,029
Total solar energy systems, net	$	13,028,871	$	10,988,361

Property and equipment, net consists of the following (in thousands):

	December 31,
	2023		2022
Machinery and equipment	$	17,216	$	11,742
Leasehold improvements, furniture, and computer hardware	47,810		44,547
Vehicles	157,486		94,821
Computer software	74,636		53,314
Total property and equipment	297,148		204,424
Less: Accumulated depreciation and amortization	(148,009)		(136,985)
Total property and equipment, net	$	149,139	$	67,439

Schedule of Deferred Revenue

The opening balance of deferred revenue was $873.6 million as of December 31, 2021. Deferred revenue consists of the following (in thousands):

	December 31,
	2023		2022
Under Customer Agreements:
Payments received, net	$	873,137	$	840,771
Financing component balance	72,289		65,326
	945,426		906,097
Under SREC contracts:
Payments received, net	237,800		179,416
Financing component balance	12,835		10,460
	250,635		189,876
Total	$	1,196,061	$	1,095,973