Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Operating leases and incentives	$ 118,004	$ 84,006	$ 54,740
Solar energy systems and product sales	186,602	114,551
Total revenue	304,606	198,557	54,740
Operating expenses:
Cost of operating leases and incentives	111,784	72,898	43,088
Cost of solar energy systems and product sales	168,751	100,802
Sales and marketing	145,477	78,723	22,395
Research and development	9,657	8,386	9,984
General and administrative	84,442	68,098	33,242
Amortization of intangible assets	3,695	2,269
Total operating expenses	523,806	331,176	108,709
Loss from operations	(219,200)	(132,619)	(53,969)
Interest expense, net	33,236	27,521	11,752
Loss on early extinguishment of debt	431	4,350
Other expenses	1,338	3,043	365
Loss before income taxes	(254,205)	(167,533)	(66,086)
Income tax benefit	(5,299)	(10,043)	(591)
Net loss	(248,906)	(157,490)	(65,495)
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(220,660)	(86,638)	(64,294)
Net loss attributable to common stockholders	(28,246)	(70,852)	(1,201)
Deemed dividend to convertible preferred stockholders	(24,890)
Net loss available to common stockholders	$ (53,136)	$ (70,852)	$ (1,201)
Net loss per share available to common shareholders— basic and diluted	$ (0.96)	$ (3.11)	$ (0.12)
Weighted average shares used to compute net loss per share available to common stockholders— basic and diluted	55,091	22,795	9,780