The U.S. Environmental Protection Agency (EPA) announced that it will temporarily allow the widespread sale of E15, a gasoline blend containing 15 percent ethanol, throughout the summer. This emergency move aims to mitigate surging consumer fuel prices following the onset of the war with Iran. Traditionally, E15 sales are prohibited during warmer months due to environmental concerns that the blend contributes to increased smog and ground-level ozone.
Lowers pump costs potentially
U.S. Agriculture Secretary Brooke Rollins characterized the action as a step toward “American Energy Dominance,” suggesting it provides a clear demand signal for domestic biofuel producers. While the summer waiver has become relatively common in recent years, there is bipartisan support from both Republicans and Democrats to make E15 available year-round to permanently lower costs at the pump. According to the Renewable Fuels Association, E15 is already permitted in several states, including Iowa, Illinois, Minnesota, Nebraska, Missouri, Wisconsin, and most of South Dakota, as well as in various cities requiring reformulated gasoline.
API backs temporary easing
Despite the administration’s goals, some experts remain skeptical about the overall impact on gasoline prices. Kenneth Gillingham, a professor at the Yale School of the Environment, noted that E15 is not available in all states and many regions lack the necessary infrastructure or ethanol supply to significantly ramp up its use. Furthermore, the higher corrosive properties of E15 can pose risks to older vehicles, boats, and all-terrain vehicles. The oil industry, represented by the American Petroleum Institute, expressed uncharacteristic support for this temporary easing of requirements, citing the need to ensure affordable energy access during the current crisis.
Ethanol diverts corn supply
The shift toward increased ethanol use carries significant secondary consequences. Jason Hill, a professor at the University of Minnesota, warned that diverting more corn to ethanol production reduces the supply available for animal feed. This could result in a “ledger settlement” where consumers save money on fuel but face higher prices at the grocery store. Additionally, Hill suggested the move might be a strategic effort to support farmers burdened by high diesel and fertilizer costs caused by the Iran war.
From an environmental standpoint, the risks are substantial. Professor Gillingham cautioned that the waiver is likely to exacerbate ozone issues during the summer, potentially leading to increased respiratory problems and heart attacks. The trade-off between immediate economic relief and long-term public health remains a central point of contention as the administration navigates the energy disruptions caused by the ongoing conflict.
