There are now over half a million plug-in vehicles on US roads, the DOE reported. The milestone of 500,000 cumulative sales was reached in September.
The first mass market plug-in vehicles, the Chevrolet Volt and Nissan LEAF, were introduced in the US in December of 2010. By the end of 2012 there were 11 different plug-in models available, and by September of 2016 there were 27.
Plug-in sales continue to accelerate. Monthly sales have set new records five times since December 2015, and reached an all-time high of 16,974 units in September. The top-selling models in September were Tesla’s Models S and X, followed by Chevy’s Volt and Ford’s Fusion Energi.