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ORGANIZATION AND PRINCIPAL ACTIVITIES (Narrative) (Details) $ in Thousands, ¥ in Millions | 1 Months Ended | 12 Months Ended | 36 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2020 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2021 USD ($)
Proceeds from share purchases of third-party investors |  |  | $ 224,553 |  | $ 224,553 |  | $ 224,553
Capital raised |  |  |  |  | 224,553 |  |
Proceeds from Noncontrolling Interests |  |  | 10,003 |  | 261,332 | $ 11,488 |
Compensation cost |  |  | $ 0 |  | 0 |  | 0
Percentage of discount on Issue of Shares |  |  | 30.00% | 30.00% |  |  |
Premium (Discount) on Issue of Shares |  |  | $ 768,000 | ¥ 5,250 |  |  |
Other Payables [Member] |  |  |  |  |  |  |
Subscription advances |  |  | 36,342 |  | $ 36,342 |  | $ 36,342
Canadian Solar Employees |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  | $ 4,500 | 31 |  |  |
Canadian Solar |  |  |  |  |  |  |
Ownership Percentage by Noncontrolling Owners |  |  | 20.40% |  | 20.40% |  | 20.40%
Canadian Solar | Third-Party Investors |  |  |  |  |  |  |
Stock Issued During Period, Value, Employee Stock Ownership Plan |  |  | $ 36,342 | 248 |  |  |
CSI Solar Co |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | 219,000 | 1,500 |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  | $ 1,100,000 | ¥ 7,500 |  |  |
Proceeds from Noncontrolling Interests | $ 261,332 | ¥ 1,780 |  |  |  |  |

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