v3.10.0.1
Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Operating activities:    
Net loss $ (163,147) $ (148,765)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization, net of amortization of deferred grants 73,980 61,654
Deferred income taxes 12,582 16,179
Stock-based compensation expense 16,242 11,389
Interest on pass-through financing obligations 7,002 6,274
Reduction in pass-through financing obligations (10,142) (8,142)
Other noncash losses and expenses 12,131 10,152
Changes in operating assets and liabilities:    
Accounts receivable (13,044) (10,254)
Inventories 13,123 14,582
Prepaid and other assets (20,474) (16,067)
Accounts payable (32,840) 2,636
Accrued expenses and other liabilities (2,039) (6,511)
Deferred revenue (4,555) 17,702
Net cash used in operating activities (111,181) (49,171)
Investing activities:    
Payments for the costs of solar energy systems (346,962) (339,979)
Purchases of property and equipment (2,762) (4,464)
Net cash used in investing activities (349,724) (344,443)
Financing activities:    
Proceeds from state tax credits, net of recapture 10,434 13,171
Payment of debt fees (9,133) (4,955)
Proceeds from pass-through financing and other obligations 151,632 3,062
Payment of finance lease obligations (4,081) (5,262)
Contributions received from noncontrolling interests and redeemable noncontrolling interests 167,468 303,545
Distributions paid to noncontrolling interests and redeemable noncontrolling interests (33,301) (24,635)
Proceeds from exercises of stock options, net of withholding taxes paid on restricted stock units 4,944 (425)
Net cash provided by financing activities 489,518 402,196
Net change in cash and restricted cash 28,613 8,582
Cash and restricted cash, beginning of period 241,790 224,363
Cash and restricted cash, end of period 270,403 232,945
Supplemental disclosures of cash flow information    
Cash paid for interest 33,509 17,434
Cash paid for taxes 0 0
Supplemental disclosures of noncash investing and financing activities    
Purchases of solar energy systems and property and equipment included in accounts payable and accrued expenses 22,472 25,284
Purchases of solar energy systems included in non-recourse debt 0 12,873
Distributions payable to noncontrolling interests and redeemable noncontrolling interests 15,063 13,212
Right-of-use assets obtained in exchange for new finance lease liabilities 3,662 94
Recourse debt    
Financing activities:    
Proceeds from issuance of debt 2,000 91,400
Repayment of debt (2,000) (88,400)
Non-recourse debt    
Financing activities:    
Proceeds from issuance of debt 250,232 199,525
Repayment of debt $ (48,677) $ (84,830)