E15 supporters push nationwide ethanol sales expansion through divided Senate

The Senate on June 4 became the last major test for year-round E15 sales, after the House approved the Nationwide Consumer and Fuel Retailer Choice Act, H.R. 1346, by a 218-203 vote on May 13. Supporters of the higher-ethanol blend are trying to turn that narrow House win into a nationwide market shift before the next driving season, but the chamber remains divided between farm-state lawmakers, refiners and senators wary of setting a permanent federal fuel standard.

E15, a blend of up to 15% ethanol and 85% gasoline, generally cannot be sold from June 1 through Sept. 15 because it does not meet summertime Reid Vapor Pressure requirements under the Clean Air Act. Congressional Research Service says EPA can issue temporary waivers to work around those restrictions, which is why the agency has repeatedly used seasonal or emergency action instead of a statutory fix. EPA issued a nationwide emergency fuel waiver in late March that began taking effect May 1, saying the move was meant to prevent disruption in the fuel supply and give Americans more fuel options. The agency also said states with their own fuel standards may need to waive or change those provisions before the federal waiver can be implemented fully.

For ethanol producers and corn growers, the Senate fight is about more than one summer fuel rule. Year-round, nationwide E15 would widen retail access for corn-based ethanol, deepen blending demand and give retailers a product they can keep on the forecourt beyond the summer driving season. For consumers, backers say the blend can offer more choice at the pump and lower-cost fuel, while opponents have long pointed to compatibility issues, labeling requirements and upgrade costs for retailers.

The Renewable Fuels Association said the House vote would allow year-round, nationwide sales of lower-cost E15 and strengthen the farm economy. The American Petroleum Institute also backed the bill, with chief executive Mike Sommers saying it would expand consumer choice while preserving E10 availability. That unusual alignment has not erased the underlying split, however, because the coalition pushing the bill still has to hold together farmers, ethanol producers, some fuel retailers and a slice of the oil industry while refinery-state senators weigh the measure against broader Renewable Fuel Standard disputes.

A coalition letter dated May 11 added another layer to the politics, urging support for H.R. 1346 and saying the measure would provide targeted reforms to the Small Refinery Exemption process under the Renewable Fuel Standard. That linkage matters in the Senate, where E15 has become both a fuel-market question and a bargaining chip in a larger fight over refinery relief, summer gasoline rules and how quickly a once-regional ethanol blend can become a national retail standard.