The Western United States will soon see an electric-car charging network covering 5,000 miles of roadways and span 11 U.S. interstate highways. Colorado Governor John Hickenlooper announced that he and six other governors in western states have agreed to develop a network of fast-charge stations in the region.

The announcement expands upon Colorado, Nevada, and Utah’s previous commitment for a 2,000-mile charging infrastructure across the three states. Idaho, Montana, New Mexico, and Wyoming joined the three other states in signing a memorandum of understanding to develop the fast-charging network.