https://www.rockymountainpower.net/about/nr/nr2017/electric-vehicle-grant.html

WestSmart EV Project is a grant awarded to Rocky Mountain Power by the Department of Energy to further electric vehicle charging infrastructure. The grant will develop 1,500 miles of electric highway corridors along I-15, I-80, I-70 and I-84. Additional funding to support EVs will be provided by the Sustainable Transportation and Energy Plan (STEP), which was created by the Utah legislature to provide innovative ways to help support the environment.