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PROJECT ASSETS | 12 Months Ended
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Dec. 31, 2024
PROJECT ASSETS |
PROJECT ASSETS | 5. PROJECT ASSETS Project assets consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2023 |  | 2024
Development costs, including acquisition and land | ​ | $ | 651,920 | ​ | $ | 907,526
EPC and other construction costs | ​ | ​ | 205,666 | ​ | ​ | 376,736
​ | ​ | $ | 857,586 | ​ | $ | 1,284,262
Current portion | ​ | ​ | 280,793 | ​ | ​ | 394,376
Non-current portion | ​ | $ | 576,793 | ​ | $ | 889,886
​ The Company recorded impairment losses of $1,674, $16,239 and $33,052 on project assets for the years ended December 31, 2022, 2023 and 2024, respectively. Capitalized interest during development and construction was $26,439, $27,676 and $38,456 for the same periods, respectively.

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