Quarterly report pursuant to Section 13 or 15(d)

VIE Arrangements - Carrying Amounts and Classification of the VIEs' Assets and Liabilities Included in the Consolidated Balance Sheets (Details)

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VIE Arrangements - Carrying Amounts and Classification of the VIEs' Assets and Liabilities Included in the Consolidated Balance Sheets (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
USD ($)
investment_fund
fund
Dec. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Current assets:        
Cash $ 276,052 $ 269,577 $ 324,698 $ 226,625
Restricted cash 105,314 93,504    
Accounts receivable, net 70,654 77,728    
Inventories 177,967 260,571    
Prepaid expenses and other current assets 15,752 25,984    
Total current assets 645,739 733,830    
Property and equipment, net 44,567 56,708    
Other assets 526,239 408,403    
Total assets [1] 6,306,834 5,806,341    
Current liabilities:        
Accounts payable 151,804 223,356    
Distributions payable to noncontrolling interests and redeemable noncontrolling interests 18,161 16,062    
Accrued expenses and other liabilities 196,444 148,497    
Deferred revenue, current portion 79,378 77,643    
Deferred grants, current portion 8,268 8,093    
Non-recourse debt, current portion 122,812 35,348    
Total current liabilities 596,240 530,094    
Deferred revenue, net of current portion 665,583 651,856    
Deferred grants, net of current portion 211,668 218,568    
Non-recourse debt, net of current portion 2,137,154 1,980,107    
Other liabilities 199,320 141,401    
Total liabilities [1] $ 4,378,233 4,168,344    
Number of pass-through Fund arrangements | investment_fund 3      
Solar energy systems, net        
Current assets:        
Property and equipment, net $ 4,979,322 4,492,615    
Variable Interest Entities        
Current assets:        
Cash 155,201 133,362    
Restricted cash 14,495 2,746    
Accounts receivable, net 27,471 21,956    
Inventories 51,894 15,721    
Prepaid expenses and other current assets 1,583 554    
Total current assets 250,644 174,339    
Other assets 112,079 87,151    
Total assets 4,136,047 3,521,202    
Current liabilities:        
Accounts payable 25,535 11,531    
Distributions payable to noncontrolling interests and redeemable noncontrolling interests 17,776 16,012    
Accrued expenses and other liabilities 15,053 10,740    
Deferred revenue, current portion 41,435 38,265    
Deferred grants, current portion 1,011 1,011    
Non-recourse debt, current portion 54,358 4,901    
Total current liabilities 155,168 82,460    
Deferred revenue, net of current portion 473,129 443,873    
Deferred grants, net of current portion 26,220 27,023    
Non-recourse debt, net of current portion 186,173 201,575    
Other liabilities 35,176 19,633    
Total liabilities $ 875,866 774,564    
Number of pass-through Fund arrangements | fund 6      
Variable Interest Entities | Solar energy systems, net        
Current assets:        
Property and equipment, net $ 3,773,324 $ 3,259,712    
[1] The Company’s consolidated assets as of September 30, 2020 and December 31, 2019 include $4,136,047 and $3,521,202, respectively, in assets of variable interest entities (“VIEs”) that can only be used to settle obligations of the VIEs. These assets include solar energy systems, net, as of September 30, 2020 and December 31, 2019 of $3,773,324 and $3,259,712, respectively; cash as of September 30, 2020 and December 31, 2019 of $155,201 and $133,362, respectively; restricted cash as of September 30, 2020 and December 31, 2019 of $14,495 and $2,746, respectively; accounts receivable, net as of September 30, 2020 and December 31, 2019 of $27,471 and $21,956, respectively; inventories as of September 30, 2020 and December 31, 2019 of $51,894 and 15,721, respectively; prepaid expenses and other current assets as of September 30, 2020 and December 31, 2019 of $1,583 and $554, respectively; and other assets as of September 30, 2020 and December 31, 2019 of $112,079 and $87,151, respectively. The Company’s consolidated liabilities as of September 30, 2020 and December 31, 2019 include $875,866 and $774,564, respectively, in liabilities of VIEs whose creditors have no recourse to the Company. These liabilities include accounts payable as of September 30, 2020 and December 31, 2019 of $25,535 and $11,531, respectively; distributions payable to noncontrolling interests and redeemable noncontrolling interests as of September 30, 2020 and December 31, 2019 of $17,776 and $16,012, respectively; accrued expenses and other current liabilities as of September 30, 2020 and December 31, 2019 of $15,053 and $10,740, respectively; deferred revenue as of September 30, 2020 and December 31, 2019 of $514,564 and $482,138, respectively; deferred grants as of September 30, 2020 and December 31, 2019 of $27,231 and $28,034, respectively; non-recourse debt as of September 30, 2020 and December 31, 2019 of $240,531 and $206,476, respectively; and other liabilities as of September 30, 2020 and December 31, 2019 of $35,176 and $19,633, respectively.