DOE: California had highest concentration of plug-in vehicles relative to population in US in 2015: 4.68 PEVs/1,000 people
In 2015, only five states had more than two plug-in vehicles (PEVs) registered per 1,000 people, according to figures compiled by the US Department of Energy (DOE). California had the highest concentration of plug-in electric vehicles (PEVs) with 4.68 PEVs per 1,000 people.
Hawaii had the second highest concentration with 2.94 PEVs per 1,000 people followed by Washington, Georgia, and Oregon with 2.32, 2.20 and 2.04 PEVs per 1,000 people, respectively.
Georgia is the only eastern state with more than 2 PEVs per 1,000 people, likely due to generous state incentives that were offered until the summer of 2015, DOE suggested. Mississippi had the lowest concentration of PEVs, but all 50 states and the District of Columbia had at least some PEVs.