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US plans to allow E15 gasoline this summer

  • : Agriculture, Biofuels, Emissions, Oil products
  • 26/03/25

The US is planning to allow refiners and retailers to supply a gasoline blend with more ethanol than is usually allowed in some states in the summer, an effort to temper fuel costs that have surged because of war in the Middle East.

The Environmental Protection Agency (EPA) is expected to soon issue emergency waivers allowing continued nationwide sales of gasoline with up to 15pc ethanol (E15), a blend typically restricted in the summer because of rules to limit smog, according to four people familiar with the plans. Most gasoline in the US is sold with 10pc ethanol, but higher-ethanol blends are typically cheaper.

Clarity on the agency's plans is expected on Wednesday. EPA administrator Lee Zeldin was to address the CERAWeek conference in Houston, Texas, on Wednesday afternoon with an announcement "regarding nationwide E15 and E10 to boost energy supply and provide cost relief to Americans", according to a media advisory.

EPA said that it was working to restore "American energy dominance" and was "monitoring the supply with industry and federal partners".

EPA has issued emergency waivers allowing summertime E15 the past four years, citing "extreme or unusual" fuel supply issues. President Donald Trump's administration has more recently looked for ways to minimize the impact of war in Iran on US drivers.

Last year's waivers also allowed continued sales of typical E10 gasoline in a group of Midwestern states that would have otherwise required that blend to be mixed with less-volatile but costlier blendstocks. Governors of those seven states, hoping to again halt their shift to the boutique blend that would leave them in a regional fuel island, have asked for similar treatment this year.

Oil refiners have pushed EPA to clarify plans sooner than in years past. The first in a series of 20-day waivers last year came just days before summer driving season kicked off, frustrating fuel makers and distributors that had already invested millions to move to the boutique Midwestern blend.

The focus on emergency waivers comes as a task force of Republican lawmakers in Congress has struggled to reach agreement on biofuel policy legislation that would permanently adjust air quality rules to allow E15 sales year-round. Some refiners have objected to earlier proposals that would restrict their ability to win exemptions from biofuel blend mandates.

Lobbyists close to the debate say there is disagreement in Congress over whether to continue pushing for far-reaching biofuel legislation that limits those exemptions or a slimmer E15 bill instead. Senate Agriculture Committee chair John Boozman (R-Arkansas) said at an event in DC on Monday that he supports E15 but that restricting exemptions could lead small refineries, including one in his state, to close.


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