The United States Supreme Court decided not to hear a challenge to the 2010 Environmental Protection Agency approval of the use of fuel containing up to 15% ethanol. The challenge was from The American Petroleum Institute and several other groups. Impact Oklahoma reported Tom Buis, CEO of Growth Energy, called the move, "a true victory for the American biofuels industry." Bob Dinneen, president of the Renewable Fuels Association, said the Supreme Court's decision, "ends a long and drawn out petroleum industry effort to derail the commercialization of E15."
The EPA has approved E15 for cars newer than 2001, however, use will void the warranty for some manufacturers. E15 has been available at pumps in Kansas since last year, as well as a few Oklahoma stations.