Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total revenue	$ 1,199,125	$ 972,176	$ 794,247
Cost of revenue	1,050,837	774,595	628,454
Gross profit	148,288	197,581	165,793
Operating expenses:
Research and development	150,606	103,396	83,577
Sales and marketing	90,934	86,499	55,916
General and administrative	167,740	122,188	107,085
Total operating expenses	409,280	312,083	246,578
Loss from operations	(260,992)	(114,502)	(80,785)
Interest income	3,887	262	1,475
Interest expense	(53,493)	(69,025)	(76,276)
Interest expense - related parties	0	0	(2,513)
Loss on extinguishment of debt	(8,955)	0	(12,878)
Other income (expense), net	4,998	(8,139)	(8,318)
Gain (loss) on revaluation of embedded derivatives	566	(919)	464
Loss before income taxes	(313,989)	(192,323)	(178,831)
Provision for income tax	1,097	1,046	256
Net loss	(315,086)	(193,369)	(179,087)
Less: Net loss attributable to noncontrolling interest	(13,378)	(28,896)	(21,513)
Net loss attributable to Class A and Class B common stockholders	(301,708)	(164,473)	(157,574)
Less: Net loss attributable to redeemable noncontrolling interest	(300)	(28)	(21)
Net loss before portion attributable to redeemable noncontrolling interest and noncontrolling interest	$ (301,408)	$ (164,445)	$ (157,553)
Net loss per share attributable to Class A and Class B common stockholders, basic (in dollars per share)	$ (1.62)	$ (0.95)	$ (1.14)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in dollars per share)	$ (1.62)	$ (0.95)	$ (1.14)
Weighted average shares used to compute net loss per share available to Class A and Class B common stockholders, basic (in shares)	185,907	173,438	138,722
Weighted average shares used to compute net loss per share available to Class A and Class B common stockholders, diluted (in shares)	185,907	173,438	138,722
Product
Total revenue	$ 880,664	$ 663,512	$ 518,633
Cost of revenue	616,178	471,654	332,724
Installation
Total revenue	92,120	96,059	101,887
Cost of revenue	104,111	110,214	116,542
Service
Total revenue	150,954	144,184	109,633
Cost of revenue	168,491	148,286	132,329
Electricity
Total revenue	75,387	68,421	64,094
Cost of revenue	$ 162,057	$ 44,441	$ 46,859