Leaders from four counties in Hawaii have signed a commitment to transform Hawaii’s public and private ground transportation to 100% renewable fuel sources by 2045. The mayors of the City and County of Honolulu, Maui County, Hawaii County, and Kauai County have committed to the goal.

In addition, the City and County of Honolulu, the County of Maui, and the County of Kauai pledged to lead the way by transitioning all of their fleet vehicles to 100% renewable power by 2035, and the County of Hawaii plans to establish a goal toward the same end.

Ground transportation accounts for more than one quarter of Hawaii’s imported fossil fuel consumption and greenhouse gas emissions. The move is expected to result in significant financial gain for residents, as operating and maintaining an electric vehicle costs about one-third less than a comparable vehicle powered by fossil fuel, according to a joint release by the counties.

The proclamations also continue Hawaii’s progress in transitioning away from fossil fuels and builds off a 2015 state law that requires 100% of Hawaii’s electricity to be generated by renewable sources by 2045. The four Hawaii mayors join leaders in France, Great Britain, India, China, Dublin, Madrid, Oslo, Milan, Paris, and Brussels who have also committed to transition their transportation systems away from fossil fuels.