Ethanol Inventories Rise to 25 Million Barrels

As of September 16, 2026, U.S. ethanol supplies grew by 33,000 barrels amid higher production and export volumes.

Updated on Oct. 20, 2026 in Economic Indicators

Isometric editorial illustration of industrial silver storage tanks and pipes, representing national ethanol inventory growth. — U.S. ethanol inventories rose to 25.22 million barrels for the week ending September 16, 2026, driven by higher daily production levels. AI Illustration. Upload story photo >

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Do you believe the current ethanol production levels are beneficial for the national energy market?

U.S. ethanol inventories climbed to a total of 25.22 million barrels on September 16, 2026. This increase was supported by a robust production average of 1.099 million barrels per day.

Why it matters

The steady growth in output and exports reflects positive operating margins at facilities like those in Iowa. Increased supply levels are influenced by higher refinery inputs and rising gasoline demand across the country.

Weekly ethanol production averaged 1.099 million barrels per day, marking an increase of 44,000 barrels per day compared to the prior year. Additionally, exports rose by 17,000 barrels per day week-on-week.

The players

Iowa Ethanol Plants

These production facilities serve as a benchmark for the industry when calculating positive operating margins.

The details

Refinery and blender inputs increased alongside the volume of gasoline supplied to the market, driving the latest inventory trends. Production remains higher than year-earlier levels, bolstered by favorable margins for producers in Iowa.

September 16, 2026: Ethanol inventories reached 25.22 million barrels.
May 2026: Inventory levels were lower than the reported September 16, 2026 figure.

Macro View

This report follows the established pattern of periodic fuel supply reporting that characterizes the U.S. energy market. The current data reflects a continuation of production trends seen in previous cycles.

Fluctuations in ethanol supply and production can influence the fuel blend costs passed down to drivers at the pump. While inventory levels are currently rising, individual household fuel expenses remain sensitive to broader refinery and gasoline demand trends.

The takeaway

The rise in ethanol inventories indicates a healthy production environment supported by consistent export demand. Consumers should monitor fuel price trends as high refinery output continues to influence regional supply balances.