The Environmental Protection Agency has approved an emergency waiver to allow E-15 blend to be sold through the summer of 2024. The waiver will constrain escalation in price of gasoline albeit be with a deterioration in miles per gallon based on the lower energy value of ethanol compared to gasoline.
The restraints to uptake of higher ethanol blends include incompatibility with older vehicles, limitations on the number of available multi-blend fuel dispensers and the need for additional storage tanks at depots and gas stations.