Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Total revenue	$ 187,856	$ 200,326	$ 344,555	$ 347,327
Cost of revenue	161,607	171,976	298,375	317,413
Gross profit	26,249	28,350	46,180	29,914
Operating expenses:
Research and development	19,377	29,772	42,656	58,631
Sales and marketing	11,427	18,194	25,376	38,567
General and administrative	24,945	43,662	54,043	82,736
Total operating expenses	55,749	91,628	122,075	179,934
Loss from operations	(29,500)	(63,278)	(75,895)	(150,020)
Interest income	332	1,700	1,151	3,585
Interest expense	(14,374)	(22,722)	(35,128)	(44,522)
Interest expense to related parties	(794)	(1,606)	(2,160)	(3,218)
Other income (expense), net	(3,913)	(222)	(3,921)	43
Loss on extinguishment of debt	0	0	(14,098)	0
Gain (loss) on revaluation of embedded derivatives	412	(540)	696	(1,080)
Loss before income taxes	(47,837)	(86,668)	(129,355)	(195,212)
Income tax provision	141	258	265	466
Net loss	(47,978)	(86,926)	(129,620)	(195,678)
Less: net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(5,466)	(5,015)	(11,159)	(8,847)
Net loss attributable to Class A and Class B common stockholders	$ (42,512)	$ (81,911)	$ (118,461)	$ (186,831)
Net loss per share attributable to Class A and Class B common stockholders, basic and diluted (in dollars per share)	$ (0.34)	$ (0.72)	$ (0.95)	$ (1.66)
Weighted average shares used to compute net loss per share attributable to Class A and Class B common stockholders, basic and diluted (in shares)	125,928	113,622	124,823	112,737
Product
Total revenue	$ 116,197	$ 144,081	$ 215,756	$ 235,007
Cost of revenue	83,127	113,228	155,616	202,000
Installation
Total revenue	29,839	13,076	46,457	25,295
Cost of revenue	38,287	17,685	59,066	33,445
Service
Total revenue	26,208	23,026	51,355	46,493
Cost of revenue	28,652	18,763	59,622	46,684
Electricity
Total revenue	15,612	20,143	30,987	40,532
Cost of revenue	$ 11,541	$ 22,300	$ 24,071	$ 35,284