What specific regulatory change is the Trump administration making to summer-blend gasoline requirements, and when does it take effect?

The Trump administration, through the EPA, is ending the summer-blend gasoline requirement about two weeks early this year, allowing the sale of E10 gasoline with a higher Reid Vapor Pressure (RVP) beginning September 1—instead of the usual September 15 cutoff. This change permits earlier use of winter-grade gasoline blends, which are less volatile and easier to produce, in an effort to boost fuel supply and lower pump prices.

Why is the EPA waiving state-level gasoline controls in Texas, Arizona, and California, and for how long?

The EPA waived state-level gasoline controls that extend beyond September 15 in Texas, Arizona, and California for the maximum period allowed—20 days—and stated it will monitor gasoline supplies in those states and extend the waiver further if necessary to ensure adequate consumer supply.

US to End Summer Blend Gasoline Requirement Early to Lower Prices

Aug 20, 2026

The EPA announced ending summer-blend gasoline requirements two weeks early to boost supply and lower prices. The waiver allows higher volatility gasoline starting September 1 to alleviate supply crunches amid rising pump costs.

reuters

2026-08-20

US to End Summer Blend Gasoline Requirement Early to Lower Prices

US to End Summer Blend Gasoline Requirement Early to Lower Prices

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