Iowa utility regulators will allow retailers to sell energy for electric vehicle charging by quantity -- a move some advocates say marks a win for the state’s budding electric vehicle infrastructure, reports the Cedar Rapids Gazette. Last year, officials with the Iowa 80 Truckstop in Walcott requested that the utilities board allow energy to be sold by the kilowatt-hour, which was prohibited by state law. Mark Schuling, Iowa’s consumer advocate, said charging stations can distribute energy at different speeds, meaning one hour at one station can provide a different amount of energy than an hour at the next station. Consumers should have a better understanding of their purchase by allowing the sale of energy by a quantity, he said.