Ethanol Blend Rate Breaks Ceiling as E15 Expands

Higher ethanol blend rates translate directly into stronger, more durable corn demand if regulatory momentum holds.

NASHVILLE, Tenn. (RFD-TV) — U.S. ethanol demand reached a new milestone in October, as ethanol accounted for 11.06 percent of the nation’s gasoline supply — the first monthly blend rate above 11 percent on record, according to data from the U.S. Energy Information Administration. The record underscores growing fuel demand for ethanol and challenges long-standing assumptions that blending cannot exceed 10 percent.

The Renewable Fuels Association says expanded availability of E15 and flex fuels such as E85 is driving the increase. The 12-month average blend rate also reached a record 10.48 percent in October, signaling sustained growth rather than a one-month anomaly. Iowa continues to lead adoption, with E15 representing roughly 25 percent of gasoline sales in November — nearly double early-2025 levels — while California’s recent E15 approval opens a major new market.

RFA President and CEO Geoff Cooper credits summer emergency fuel waivers and lower pump prices for accelerating adoption, while emphasizing the need for permanent year-round E15 approval and strong EPA renewable fuel standards. At an 11 percent blend rate, annual ethanol use would reach roughly 15 billion gallons.

Farm-Level Takeaway: Higher ethanol blend rates translate directly into stronger, more durable corn demand if regulatory momentum holds.
Tony St. James, RFD-TV Markets Specialist
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Tony St. James joined the RFD-TV talent team in August 2024, bringing a wealth of experience and a fresh perspective to RFD-TV and Rural Radio Channel 147 Sirius XM. In addition to his role as Market Specialist (collaborating with Scott “The Cow Guy” Shellady to provide radio and TV audiences with the latest updates on ag commodity markets), he hosts “Rural America Live” and serves as talent for trade shows.

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