SunPower Corporation is a public company headquartered in San Jose, California. It sells, installs, and finances solar power products, such as panels, batteries, mounting hardware, and monitoring software. The company was founded in 1985 by an electrical engineering professor from Stanford, Richard Swanson. Cypress Semiconductor bought a majority interest in the company in 2002. SunPower grew quickly and went public in 2005. In 2007, SunPower acquired PowerLight, doubling the size of the company. Total purchased a controlling interest in SunPower for $1.37 billion in 2011. In 2019, SunPower announced it was spinning off its manufacturing operations into a company called Maxeon Solar Technologies, Ltd.