[Canadian Solar Appoints Guangchun Zhang as Chief Operating Officer GUELPH, Ontario, Canada, Dec. 13, 2012 — Canadian Solar Inc. (the “Company”, or “Canadian Solar”) (NASDAQ: CSIQ), one of the world’s largest solar power companies, today announced the appointment of Mr. Guangchun Zhang as Chief Operating Officer. Reporting directly to Canadian Solar Chairman and Chief Executive Officer, Dr. Shawn Qu, Mr.] [FORM 6-K CANADIAN SOLAR INC. No. 199 Lushan Road Suzhou New District Suzhou, Jiangsu 215129 People’s Republic of China Form 20-F x Form 40-F o o o CANADIAN SOLAR INC. Form 6-K TABLE OF]