Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Total revenue	$ 292,274	$ 207,228	$ 736,549	$ 629,705
Cost of revenue:
Total cost of revenue	241,330	170,345	659,638	500,827
Gross profit	50,944	36,883	76,911	128,878
Operating expenses:
Research and development	36,146	27,634	112,286	76,602
Sales and marketing	23,275	20,124	65,084	62,803
General and administrative	44,115	33,014	119,965	90,470
Total operating expenses	103,536	80,772	297,335	229,875
Loss from operations	(52,592)	(43,889)	(220,424)	(100,997)
Interest income	1,109	72	1,364	222
Interest expense	(13,099)	(14,514)	(41,000)	(43,798)
Loss on extinguishment of debt	0	0	(4,233)	0
Other income, net	4,472	2,011	254	1,948
Gain (loss) on revaluation of embedded derivatives	54	(184)	623	(1,644)
Loss before income taxes	(60,056)	(56,504)	(263,416)	(144,269)
Income tax provision	336	158	888	595
Net loss	(60,392)	(56,662)	(264,304)	(144,864)
Less: Net loss attributable to noncontrolling interest	(3,315)	(4,309)	(9,768)	(13,733)
Net loss attributable to Class A and Class B common stockholders	(57,077)	(52,353)	(254,536)	(131,131)
Less: Net (loss) income attributable to redeemable noncontrolling interest	0	17	(300)	(9)
Net loss before portion attributable to redeemable noncontrolling interest and noncontrolling interest	$ (57,077)	$ (52,370)	$ (254,236)	$ (131,122)
Net loss per share available to Class A and Class B common stockholders, basic (in dollars per share)	$ (0.31)	$ (0.30)	$ (1.41)	$ (0.76)
Net loss per share available to Class A and Class B common stockholders, diluted (in dollars per share)	$ (0.31)	$ (0.30)	$ (1.41)	$ (0.76)
Weighted average shares used to compute net loss per share available to Class A and Class B common stockholders, basic (in shares)	186,487	174,269	180,762	172,601
Weighted average shares used to compute net loss per share available to Class A and Class B common stockholders, diluted (in shares)	186,487	174,269	180,762	172,601
Product
Revenue:
Total revenue	$ 213,243	$ 128,550	$ 520,415	$ 413,347
Cost of revenue:
Total cost of revenue	158,176	93,704	393,337	289,889
Installation
Revenue:
Total revenue	22,682	22,172	48,964	53,710
Cost of revenue:
Total cost of revenue	28,333	25,616	57,836	66,756
Service
Revenue:
Total revenue	37,347	39,251	111,012	111,375
Cost of revenue:
Total cost of revenue	41,792	39,586	124,646	111,269
Electricity
Revenue:
Total revenue	19,002	17,255	56,158	51,273
Cost of revenue:
Total cost of revenue	$ 13,029	$ 11,439	$ 83,819	$ 32,913