| Schedule of Property, Plant and Equipment |
Depreciation is calculated using the straight-line method over the estimated depreciable lives of the respective assets as follows: | | | | | | | | | | | Depreciable Lives | | | | Energy Server systems | | 15-21 years | | Computers, software and hardware | | 3-5 years | Vehicles, machinery and equipment | | 5-10 years | | Furniture and fixtures | | 3-5 years | | Leasehold improvements | | 1-10 years | | Buildings | | * |
* Lesser of 35 years or the term of the underlying land lease. Property, plant and equipment, net, consists of the following (in thousands): | | | | | | | | | | | | | | | | | December 31, | | | | 2025 | | 2024 | | | | | | | | Vehicles, machinery and equipment | | $ | 203,731 | | | $ | 200,004 | | | Energy Server systems | | 165,629 | | | 165,629 | | | Leasehold improvements | | 129,665 | | | 122,413 | | | Construction-in-progress | | 83,067 | | | 86,731 | | | Buildings | | 53,156 | | | 53,221 | | | Computers, software and hardware | | 34,761 | | | 33,910 | | | Furniture and fixtures | | 11,090 | | | 10,943 | | | | 681,099 | | | 672,851 | | | Less: accumulated depreciation | | (282,592) | | | (269,376) | | | | $ | 398,507 | | | $ | 403,475 | |
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