The total demand for U.S. ethanol has grown steadily since 2016. The blend rate, ethanol’s percentage of finished motor gasoline volume, is one indicator of gasoline blenders’ demand for ethanol in vehicle fuel. March 2025 data showed the U.S. average blend rate was 10.1 percent, the ninth-consecutive month above the implied minimum federal blend rate of ten percent. The 12-month moving average blend rate stood at 10.2 percent.
The average blend rate has largely been at ten percent or higher since 2020. Increasing blend rates have helped maintain domestic ethanol consumption at a steady level despite reduced demand for finished motor gasoline. Since 2023, international demand for ethanol has steadily risen and provided additional support for U.S. ethanol fuel production. Elevated blend rates and rising ethanol exports both support growing demand for corn. To meet the March 2025 demand for fuel ethanol required about 465 million bushels of corn, a 60 million bushel increase over the monthly demand from ten years ago.
-NAFB