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Tuesday, September 08, 2026 · 54142 stories tracked

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Biofuels & Renewables · DAILY BRIEF

Thune ties year-round E15 to a deal with small refiners

Andy Will, Chief Editor · Sunday, August 16, 2026

John Thune says year-round sales of higher ethanol blends will not pass without a deal with small oil refiners. The Senate majority leader, a South Dakota Republican who has pushed E15 for years, put the tradeoff plainly: a permanent fix means giving the small refiners something in return. For corn-belt jobbers, that marks where the biofuels fight sits this week.

The compromise

The sticking point is the same one that has stalled year-round E15 every prior round. Small refiners want relief under the Renewable Fuel Standard, the exemptions that let them off the hook for blending obligations. Ethanol backers want the summer sales ban on E15 gone for good so retailers can run the higher blend all year without a patchwork of state waivers and last-minute EPA reprieves.

Thune is signaling he will trade one for the other. For a jobber or a c-store operator carrying E15, that matters because the value of the blend depends on being able to sell it twelve months a year. Without a permanent fix, retailers scramble every June when the Reid vapor pressure rules kick back in. A permanent statutory fix is worth more than another temporary waiver, and it looks like the price of that fix is giving the small refiners something on the RFS side.

It is not clear the ethanol lobby will accept that. Loosening small refiner exemptions cuts into demand for renewable fuel credits, which is what biofuel producers have spent years fighting.

The EV backdrop

The other item is the longer-run question of where ethanol fits as electric vehicles take a share of the fleet. It is a real debate for anyone deciding whether to invest in blending infrastructure now.

For US operators the near-term math has not changed. Gasoline demand is still the base of the business, and ethanol is still roughly a tenth of every gallon sold. EV share is climbing slowly enough that it does not reprice a fuel contract this year. The E15 fight is about the next decade of that base. EVs are not displacing it tomorrow.

Treat the EV framing as context for capital decisions. It is not a reason to change how you buy or sell fuel this quarter.

What to watch

Watch whether Thune puts actual legislative text behind the compromise, and how hard the ethanol groups push back once the small refiner terms are on the table. If the trade holds, year-round E15 could finally get a permanent fix instead of an annual waiver. If the biofuel side balks at the RFS give, this stalls again like it has before.

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