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INVESTMENTS IN AFFILIATES - Other investments (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Aug. 31, 2019 USD ($) | Dec. 31, 2023 USD ($) director shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Aug. 31, 2023
Other investments |  |  |  |  |  |  |  |
Board members designated | director |  |  |  | 1 |  |  |  |
Total board members | director |  |  |  | 5 |  |  |  |
Gain on sale of interest in affiliates |  |  |  |  |  | $ 10,392 |  |
Equity in earnings of affiliates |  |  |  | $ 14,610 | $ 15,440 | 7,256 |  |
Canadian Solar Infrastructure Fund, Inc |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Number of units held | shares |  |  |  | 65,672 | 56,620 |  |  |
Suzhou Financial Leasing Co., Ltd. |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 3.00% | 4.20% |  |  |
Canadian Solar Infrastructure Fund, Inc |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 14.50% | 14.60% |  |  |
Lavras |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 20.00% | 20.00% |  |  |
Francisco |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 20.00% | 20.00% |  |  |
Salgueiro |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 20.00% | 20.00% |  |  |
Jaiba |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 20.00% | 20.00% |  |  |
Suzhou Zhuosheng Venture Investment Fund, LLP |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 14.00% | 17.90% |  |  |
Crimson |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  | 20.00% |  | 20.00% | 20.00% |  |  |
Interest sold (in percent) |  | 80.00% |  |  |  |  |  |
Gain on sale of interest in affiliates |  | $ 123,135 |  |  |  |  |  |
Net assets derecognized |  | $ 42,333 |  |  |  |  |  |
JuSheng (Suzhou) Solar Tech Co., Ltd. |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 2.20% | 4.40% |  |  |
Horus Solar S.A. De Capital Variable ("Horus") and Recursos Solares PV De Mxico II S.A. De Capital Variable ("Recursos") |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 49.00% | 49.00% |  |  |
Gain on sale of interest in affiliates |  |  |  |  |  | 113,843 | $ 100,896 |
Net assets derecognized |  |  |  |  | $ 7,527 | $ 10,363 |  |
Lingang Frontier CSI New Energy Investment Fund, LP |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 44.30% |  |  |  |
Lingang Frontier CSI New Energy Investment Fund, LP | CSI Solar Co Ltd [Member] |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  | 44.30%
Salgueiro, Francisco, Jaiba and Larvras |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage |  |  | 20.00% |  |  |  |  |
Gain on sale of interest in affiliates |  |  | $ 12,793 |  |  |  |  |
Net assets derecognized |  |  | $ 8,369 |  |  |  |  |
Marangatu Holding S.A |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage | 30.00% |  |  | 30.00% | 30.00% |  |  |
Gain on sale of interest in affiliates | $ 12,007 |  |  |  |  |  |  |
Net assets derecognized | $ 6,267 |  |  |  |  |  |  |
Panati |  |  |  |  |  |  |  |
Other investments |  |  |  |  |  |  |  |
Ownership percentage | 30.00% |  |  | 30.00% | 30.00% |  |  |
Gain on sale of interest in affiliates | $ 2,259 |  |  |  |  |  |  |
Net assets derecognized | $ 2,262 |  |  |  |  |  |  |

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