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Energy Assets, Net (Tables)
 12 Months Ended
Dec. 31, 2022
Other Assets [Abstract]  
Summary of Energy Assets
Energy assets, net consisted of the following: 
December 31,
 20222021
Energy assets (1)
$1,493,913 $1,120,712 
Less: accumulated depreciation and amortization(312,388)(264,181)
Energy assets, net$1,181,525 $856,531 
(1) Includes financing lease assets (see Note 8), capitalized interest and ARO assets (see tables below).
Schedule Of Depreciation And Amortization Expense Of Energy Assets
The following table sets forth our depreciation and amortization expense on energy assets, net of deferred grant amortization:
Year Ended December 31,
Location202220212020
Cost of revenues (1)
$49,755 $43,113 $38,039 
(1) Includes depreciation and amortization expense on financing lease assets. See Note 8.
Capitalized Interest
The following table presents the interest costs relating to construction financing during the period of construction, which were capitalized as part of energy assets, net:
Year Ended December 31,
202220212020
Capitalized interest$13,050 $2,814 $4,341 
Schedule of Customer Energy Liabilities
The liabilities recognized in association with these customer energy assets were as follows:
December 31,
Location20222021
Accrued expenses and other current liabilities$261 $245 
Other liabilities27,168 12,827 
Total customer energy asset projects liability$27,429 $13,072 
Schedule of Asset Acquisitions
We acquired and closed on the following energy projects:
December 31,
20222021
Number of projects 21
Purchase price (1)
$11,022 $3,461 
Remaining deferred purchase consideration on previously closed projects (1)
$— $303 
(1) In 2021 amounts were included in accrued expenses and other current liabilities.
Schedule Of Asset And Liabilities Retirement Obligations
The following tables sets forth information related to our ARO assets and ARO liabilities:
December 31,
Location20222021
ARO assets, netEnergy assets, net$2,359 $1,939 
ARO liabilities, currentAccrued expenses and other current liabilities$— $6 
ARO liabilities, non-currentOther liabilities3,052 2,342 
$3,052 $2,348 

Year Ended December 31,
202220212020
Depreciation expense of ARO assets$146 $113 $78 
Accretion expense of ARO liabilities$146 $123 $93