Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Total revenue	[1]	$ 1,333,470	$ 1,199,125	$ 972,176
Total cost of revenue	[2]	1,135,676	1,050,837	774,595
Gross profit		197,794	148,288	197,581
Operating expenses:
Research and development		155,865	150,606	103,396
Sales and marketing		89,961	90,934	86,499
General and administrative	[3]	160,875	167,740	122,188
Total operating expenses		406,701	409,280	312,083
Loss from operations		(208,907)	(260,992)	(114,502)
Interest income		19,885	3,887	262
Interest expense	[4]	(108,299)	(53,493)	(69,025)
Other (expense) income, net		(2,793)	4,998	(8,139)
Loss on extinguishment of debt		(4,288)	(8,955)	0
(Loss) gain on revaluation of embedded derivatives		(1,641)	566	(919)
Loss before income taxes		(306,043)	(313,989)	(192,323)
Income tax provision		1,894	1,097	1,046
Net loss		(307,937)	(315,086)	(193,369)
Less: Net loss attributable to noncontrolling interest		(5,821)	(13,378)	(28,896)
Net loss attributable to common stockholders		(302,116)	(301,708)	(164,473)
Less: Net loss attributable to redeemable noncontrolling interest		0	(300)	(28)
Net loss before portion attributable to redeemable noncontrolling interest and noncontrolling interest		$ (302,116)	$ (301,408)	$ (164,445)
Net loss per share available to common stockholders, basic (in dollars per share)		$ (1.42)	$ (1.62)	$ (0.95)
Net loss per share available to common stockholders, diluted (in dollars per share)		$ (1.42)	$ (1.62)	$ (0.95)
Weighted average shares used to compute net loss per share available to common stockholders, basic (in shares)		212,681	185,907	173,438
Weighted average shares used to compute net loss per share available to common stockholders, diluted (in shares)		212,681	185,907	173,438
Product
Total revenue	[1]	$ 975,245	$ 880,664	$ 663,512
Total cost of revenue	[2]	630,105	616,178	471,654
Installation
Total revenue	[1]	92,796	92,120	96,059
Total cost of revenue	[2]	105,735	104,111	110,214
Service
Total revenue	[1]	183,065	150,954	144,184
Total cost of revenue	[2]	220,927	168,491	148,286
Electricity
Total revenue	[1]	82,364	75,387	68,421
Total cost of revenue	[2]	$ 178,909	$ 162,057	$ 44,441

[1] Including related party revenue of $487.2 million, $36.3 million and $16.0 million for the years ended December 31, 2023, 2022 and 2021, respectively.

[2] Including related party cost of revenue of $0.1 million for the year ended December 31, 2023. There was no related party cost of revenue for the years ended December 31, 2022 and 2021.

[3] Including related party general and administrative expenses of $0.8 million for the year ended December 31, 2023. There were no related party general and administrative expenses for the years ended December 31, 2022 and 2021.

[4] Including related party interest expense of $0.1 million for the year ended December 31, 2023. There was no related party interest expense for the years ended December 31, 2022 and 2021.