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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Anti-dilutive shares excluded from the computation of diluted earnings per share |  |  |
Net income attributable to Canadian Solar Inc. - basic | $ 95,248 | $ 146,703 | $ 171,585
Dilutive effect of interest expense of convertible notes | 5,300 | 1,518 | 975
Net income attributable to Canadian Solar Inc. - diluted | $ 100,548 | $ 148,221 | $ 172,560
Denominator for basic calculation - weighted average number of common shares - basic | 61,614,391 | 59,575,898 | 59,633,855
Diluted effects of share number from share options and RSUs | 985,554 | 897,258 | 794,526
Dilutive effects of share number from convertible notes | 6,272,157 | 1,833,663 | 349,315
Denominator for diluted calculation - weighted average number of common shares - diluted | 68,872,102 | 62,306,819 | 60,777,696
Basic earnings per share | $ 1.55 | $ 2.46 | $ 2.88
Diluted earnings per share | $ 1.46 | $ 2.38 | $ 2.83
Share options and RSUs |  |  |
Anti-dilutive shares excluded from the computation of diluted earnings per share |  |  |
Anti-dilutive shares excluded from the computation of diluted earnings per share, total | 3,877 | 187,083 | 41,950

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