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Energy Assets, Net (Tables) | 9 Months Ended
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Sep. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of Energy Assets | Energy assets, net consisted of the following:
| September 30, 2021 |  | December 31, 2020
Energy assets (1) | $ | 1,081,099 |  |  | $ | 954,426 |
Less - accumulated depreciation and amortization | (252,421) |  |  | (225,048) |
Energy assets, net | $ | 828,678 |  |  | $ | 729,378 |
(1) Includes financing lease assets (see Note 6), 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:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
Location | 2021 |  | 2020 |  | 2021 |  | 2020
Cost of revenues (2) | $ | 11,313 |  |  | $ | 9,547 |  |  | $ | 31,449 |  |  | $ | 28,496 |
(2) Includes depreciation and amortization on financing lease assets (see Note 6). |  |  |  |
Schedule of 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:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Capitalized interest | $ | 827 |  |  | $ | 1,096 |  |  | $ | 4,353 |  |  | $ | 2,870 |
Schedule Of Asset And Liabilities Retirement Obligations | The following tables sets forth information related to our Asset Retirement Obligations (“ARO”) assets and ARO liabilities:
| Location | September 30, 2021 |  | December 31, 2020
ARO assets, net | Energy assets, net | $ | 1,971 |  |  | $ | 1,468 |
ARO liabilities, current | Accrued expenses and other current liabilities | $ | 6 |  |  | $ | 86 |
ARO liabilities, non-current | Other liabilities | 2,313 |  |  | 1,561 |
Total ARO liabilities |  | $ | 2,319 |  |  | $ | 1,647 |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Depreciation expense of ARO assets | $ | 30 |  |  | $ | 20 |  |  | $ | 83 |  |  | $ | 58 |
Accretion expense of ARO liabilities | $ | 33 |  |  | $ | 21 |  |  | $ | 90 |  |  | $ | 64 |

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