Canadian Solar, Inc. engages in the manufacture of solar photovoltaic modules and a provider of solar energy solutions. It operates through the Module and System Solutions (MSS), and Energy segments. The MSS segment involves in the design, development, manufacture, and sales of solar power products and solar system kits, and operation and maintenance services. The Energy segment comprises primarily of the development and sale of solar projects, operating solar power projects and the sale of electricity. The company was founded by Shawn Qu in October 2001 and is headquartered in Guelph, Canada.