Founded in 2003 and based in Palo Alto, California, Tesla is a vertically integrated sustainable energy company that also aims to transition the world to electric mobility by making electric vehicles. It sells solar panels and solar roofs for energy generation plus batteries for stationary storage for residential and commercial properties including utilities. The Tesla Roadster debuted in 2008, Model S in 2012, Model X in 2015, and Model 3 in 2017. Global deliveries in 2018 were 245,506 units. Tesla went public in 2010 and employs about 50,000 people.