U.S. ethanol production capacity increased marginally in June to 18.375 billion gallons per year (BGY), up 1 million gallons per year (MMgy) from May, according to data released by the U.S. Energy Information Administration (EIA) on August 31, Ethanol Producer Magazine reported.
Ethanol capacity was 54 MMgy higher than in June 2025, indicating a modest year-on-year expansion in the country’s ethanol production base.
The increase in ethanol capacity came as total operable U.S. biofuel production capacity reached 25.299 BGY in June, up 1 MMgy from the previous month and 246 MMgy higher than a year earlier.
While ethanol capacity expanded slightly, biodiesel capacity remained unchanged at 1.955 BGY in June. Biodiesel capacity has stayed at this level for the past three months and was 27 MMgy below its June 2025 level.
Capacity for renewable diesel and associated fuels stood at 4.939 BGY, unchanged from the previous two months but up 219 MMgy from June 2025. This category includes renewable heating oil, renewable jet fuel, renewable naphtha, renewable gasoline, as well as other biofuels and biointermediates.
The June figures show that ethanol continues to account for the largest share of U.S. operable biofuel production capacity, with capacity growth remaining modest compared with the stronger year-on-year expansion recorded in renewable diesel and associated fuels.
