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BORROWINGS - Long term narrative and interest expense (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Interest expense |  |  |
Interest capitalized - project assets | $ 27,676 | $ 26,439 | $ 17,316
Interest capitalized - solar power systems, net | 33,097 | 18,666 | 0
Interest capitalized - property, plant, and equipment | 963 |  |
Interest expense | 114,099 | 74,266 | 58,153
Total interest incurred | $ 175,835 | $ 119,371 | $ 75,469
Short-term borrowings |  |  |
BORROWINGS |  |  |
Floating interest rate (as a percent) | 3.80% | 5.30% |
Long-term borrowings |  |  |
BORROWINGS |  |  |
Floating interest rate (as a percent) | 6.70% | 4.10% |

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