As of October 2018, one million plug-in vehicles have been sold in the United States, according to the US Department of Energy data.
Plug-in sales began in December 2010 with sales of the Nissan Leaf and Chevrolet Volt. Other plug-in vehicle models followed, but plug-in sales remained below 5,000 per month until September 2012.
Cumulative plug-in vehicle sales reached 500,000 in September 2016.
Sales have been greater than 20,000 per month since May 2018, with the highest being 45,000 in September 2018.
