 The number of registered plug-in electric vehicles increased from 581 units in 2011, to 967 in 2012, and reached 1,551 units in June 2013. , a total of 2,821 plug-in highway legal plug-in electric cars have been registered in Hawaii.In terms of EV adoption, Hawaii ranked in 2013 as the state with the third highest all-electric car market share with 1.21% of new car sales, and during the first half of 2014 ranked fourth with a 1.04% market share.Accounting for sales of pure electric cars between April 2013 and March 2014, the Honolulu metropolitan area ranks as the fourth top selling BEV metro market in the United States, with 1.71% of new car sales.