Canadian Solar Financial and Operational Summary Q1 2022

Results summary by divisions HIGHLIGHTS Q1 solar module shipments were up 42% yoy to 3.6 GW and total revenue was up 15% yoy to $1.25 billion. CSI Solar revenue was up 74% yoy to $1.16 billion and gross profit was up 161% yoy to $176 million. Gross margin was 14.5%, weighted by higher upstream costs, but is expected to improve through the year with greater manufacturing vertical integration and decline in upstream costs. Battery storage systems shipments were 290 MWh. Global Energy revenue was $93 million and gross margin was 19.2%. Completed the sale of 350 MW pre-or-early-construction solar projects in the U.S., so dollar per MW was relatively lower but margin was healthy. USD millions except shipment data (1) S 1Q22 yoy qoq FY21 yoy Total module shipments recognized in revenue (MW) Revenues 3,634 42% -8% 13,893 23% 1,210 74% -10% 4,372 41% CSI Solar Gross profit 176 161% -39% 682 12% Income from operations 32 161% -61% 74 -71% Revenues 93 -80% -60% 1,124 55% Global Gross profit 18 -84% 121% 194 30% Energy Income from operations -1 -101% 93% 97 82% CSI Solar Revenue (1) Global Energy Revenue 19.6% 15.6% 9.7% 13.1% 15.1% 21.3% 14.5% 20.5% 17.3% 24.0% 4.2% 43.7% 3.5% 19.2% 4,372 1,124 USD mn % Gross margin 3,105 USD mn 726 1,184 1,149 1,343 1,210 695 FY20 FY21 1Q21 2Q21 3Q21 4Q21 1Q22 471 281 232 140 93 FY20 FY21 1Q21 2Q21 3Q21 4Q21 1Q22 (1) Includes effects of both sales to third party customers and to the Company's Global Energy business to reflect the real underlying performance. Please refer to the financial tables in the quarterly press release for the intercompany transaction elimination information. Income from operation amounts reflect management's allocation and estimate as some services are shared by the two segments of the Company. CanadianSolar MAKE THE DIFFERENCE 5

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