Sunrun Inc. is an American provider of photovoltaic systems and battery energy storage products, primarily for residential customers.

The company has a sizable network of partners, including Costco and Lowe's, who allow Sunrun to market to customers inside their stores.

[1] Sunrun was co-founded in January 2007 by Lynn Jurich, Ed Fenster, and Nat Kreamer with a business model in which it offered customers either a lease or a Power Purchase Agreement (PPA) business model whereby homeowners paid for electricity usage but did not buy solar panels outright, reducing the initial capital outlay required by the homeowner.

[8] In 2015 Sunrun went public on the Nasdaq stock exchange at $14 per share, with an initial market capitalization of $1.36 billion[9] and launched its BrightBox battery energy storage product in the state of Hawaii.

[10] The Wall Street Journal reported in May 2017 that the Securities and Exchange Commission (SEC) was investigating Sunrun and SolarCity, with regard to whether they adequately disclosed canceled contracts, a metric that the paper said is used by investors to gauge how well such companies are performing.