Exhibit 99.1 Canadian Solar Reports Fourth Quarter and Full Year 2023 Results Guelph, Ontario, March 14, 2024 – Canadian Solar Inc. ("Canadian Solar" or the "Company") (NASDAQ: CSIQ) today announced financial results for the fourth quarter and full year ended December 31, 2023. Fourth Quarter and Full Year 2023 Highlights · 26% increase in solar module shipments year-over-year ("yoy") to 8.2 GW, above guidance range of 7.6 GW to 8.1 GW. · Record full year solar module shipments of 30.7 GW by CSI Solar, a 45 ...