Most gasoline sold across the U.S. is blended with 10% ethanol, but 15% blends are becoming increasingly common.

The Environmental Protection Agency said Monday it will allow the sale of higher ethanol fuel this summer, continuing a temporary measure employed repeatedly by the Biden administration. EPA Administrator Lee Zeldin said lifting seasonal restrictions again this summer would provide certainty for E15 fuel,

EPA granted an emergency waiver permitting the nationwide sale of E15 through the summer months, which Iowa leaders say will help farmers.