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BALANCE SHEET COMPONENTS - Other Noncurrent Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Prepaid warranties and maintenance | $ 33,686 | $ 15,991 |
Unbilled receivables, net | 9,409 | 0 |
Deferred costs with suppliers | 7,720 | 0 |
Receivable from SPEs (Note 17) | 2,543 | 3,565 |
Self-generation incentive program deposits | 688 | 940 |
Investment in VIEs | 1,971 | 1,924 |
Property and equipment, net | 2,158 | 512 |
Project assets | 3,208 | 0 |
Other | 3,956 | 1,599 |
Other noncurrent assets | 65,339 | 24,531 |
Depreciation expense | $ 600 | $ 0 | $ 0

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