Canadian Solar Inc. (the "Company", or "Canadian Solar") (NASDAQ: CSIQ), one of the world's largest solar power companies, today announced that its wholly owned subsidiary, Recurrent Energy, one of North America's largest solar project developers, signed an agreement with Southern Power, a subsidiary of Southern Company (NYSE: SO). Southern Power will acquire a controlling interest in the 200-megawatt (MW) Tranquillity Solar Power Project in California. The project, developed by Recurrent Energy, is currently under construction.