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PROJECT ASSETS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
PROJECT ASSETS      
Project assets - Development cost, including project acquisition and land cost $ 444,858 $ 558,244  
Project assets - EPC and other construction cost 379,635 469,117  
Total project assets 824,493 1,027,361  
Current portion 385,964 594,107  
Non-current portion 438,529 433,254  
Impairment loss of project assets 1,674 17,152 $ 369
Interest capitalized - project assets $ 26,439 $ 17,316 $ 10,197