 California is the largest plug-in car regional market in the country, with almost 670,000 plug-in electric vehicles sold by the end of 2019.

, the Tesla Model 3 all-electric car is the all-time best selling plug-in electric car with an estimated 300,471 units delivered, followed by the Tesla Model S electric car with about 157,992, and the Chevrolet Volt plug-in hybrid with 157,054 units of both generations.The Model S was the best selling plug-in car in the U.S. for three consecutive years, from 2015 to 2017, and the Model 3 topped sales in 2018 and 2019.The Energy Improvement and Extension Act of 2008 granted federal tax credits for new qualified plug-in electric vehicles, which is worth between and depending on battery capacity.