Annual report pursuant to Section 13 and 15(d)

Energy Assets, Net - Additional Information (Details)

v3.20.4
Energy Assets, Net - Additional Information (Details)
 12 Months Ended
Dec. 31, 2020
USD ($)
project
Dec. 31, 2019
USD ($)
project
Dec. 31, 2018
USD ($)
Property, Plant and Equipment [Line Items]      
Energy assets, net [1] $ 729,378,000 $ 579,461,000  
Cost of revenues 38,039,000 35,543,000 $ 27,305,000
Capitalized interest 4,341,000 $ 2,966,000 3,817,000
Energy asset impairment charges $ 1,028,000    
Number of ESPC asset projects | project 3 3  
Accrued expenses and other current liabilities $ 33,984,000 $ 26,618,000  
Total ESPC projects liability $ 40,615,000 $ 32,178,000  
Number of projects | project 1 9  
Purchase price $ 1,251,000 $ 8,519,000  
Contingent consideration 0 6,059,000  
Developers fees paid 0 2,460,000  
Remaining deferred purchase consideration on previously closed projects $ 1,446,000 1,178,000  
Number of projects to be acquired | project 8    
Consideration to be transferred $ 10,242,000    
ARO assets, net 1,468,000 852,000  
ARO liabilities, current 86,000 160,000  
ARO liabilities, non-current 1,561,000 781,000  
Asset retirement obligation 1,647,000 941,000  
Depreciation expense of ARO assets 3,317,000 2,987,000 2,167,000
Accretion expense of ARO liabilities 93,000 44,000 0
Asset Retirement Obligation (ARO) Asset      
Property, Plant and Equipment [Line Items]      
Depreciation expense of ARO assets 78,000 45,000 $ 0
Energy Project      
Property, Plant and Equipment [Line Items]      
Payments to acquire assets 1,031,000    
Asset acquisition, note payable 204,000    
Asset acquisition, rollover equity 16,000    
Renewal Energy Program      
Property, Plant and Equipment [Line Items]      
Energy Assets 954,426,000 767,331,000  
Less: accumulated depreciation and amortization (225,048,000) (187,870,000)  
Energy assets, net 729,378,000 579,461,000  
Other liabilities 10,794,000 9,416,000  
Total ESPC projects liability 11,023,000 10,243,000  
Renewal Energy Program | Accrued expenses and other current liabilities      
Property, Plant and Equipment [Line Items]      
Accrued expenses and other current liabilities $ 229,000 $ 827,000  
[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) of $162,198 as of December 31, 2020 and $158,912 as of December 31, 2019. Includes non-recourse liabilities of consolidated VIEs of $33,335 as of December 31, 2020 and $38,568 as of December 31, 2019. See Note 11.