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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES - Revenue recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenue recognition |  |  |
Net revenues | $ 7,613,626 | $ 7,468,610 | $ 5,277,169
Revenue generated | 0 | 0 | 0
CSI Solar Segment | Recognized at a point in time |  |  |
Revenue recognition |  |  |
Net revenues | 6,767,156 | 6,173,338 | 3,881,573
CSI Solar Segment | Recognized over time |  |  |
Revenue recognition |  |  |
Net revenues | 348,817 | 473,747 | 271,513
Recurrent Energy Segment | Recognized at a point in time |  |  |
Revenue recognition |  |  |
Net revenues | 399,826 | 763,698 | 1,068,179
Recurrent Energy Segment | Recognized over time |  |  |
Revenue recognition |  |  |
Net revenues | $ 97,827 | $ 57,827 | $ 55,904

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