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v3.22.1

Property, Equipment and Software, Net | 3 Months Ended
--- | ---
Mar. 31, 2022
Long-lived assets |
Long-lived assets | Note 6 – Property, Equipment and Software, Net Property, equipment and software, net, consisted of the following as of: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
(in thousands) |  | 2022 |  | 2021
Construction in process | ​ | $ | 58,663 | ​ | $ | 39,116
Charging equipment | ​ |  | 8,090 | ​ |  | 8,611
Charging station equipment | ​ |  | 49,211 | ​ |  | 42,799
Charging station installation costs | ​ | ​ | 75,195 | ​ | ​ | 63,932
Software | ​ | ​ | 6,137 | ​ | ​ | 5,295
Office equipment and vehicles | ​ |  | 1,051 | ​ |  | 846
​ | ​ |  | 198,347 | ​ |  | 160,599
Less accumulated depreciation and amortization | ​ |  | (32,213) | ​ |  | (27,317)
Total property, equipment and software, net | ​ | $ | 166,134 | ​ | $ | 133,282
​ Depreciation and amortization expense consisted of the following for the periods presented: ​
​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended
​ | March 31, | ​ | March 31,
(in thousands) | 2022 |  | 2021
Cost of sales
Depreciation of property and equipment | $ | 4,618 | ​ | $ | 3,243
Amortization of capital-build liability | ​ | (1,164) | ​ | ​ | (796)
General and administrative expenses | ​ | ​ | ​ | ​ | ​
Depreciation of property and equipment | ​ | 63 | ​ | ​ | 34
Amortization of software | ​ | 461 | ​ | ​ | —
​ | $ | 3,978 | ​ | $ | 2,481
​

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