Ethanol Blend Mandate

The following was repealed by Senate Bill 101, 2017: Within one year after the Montana Department of Transportation has certified that ethanol producers in the state have produced a total of 40 million gallons of denatured ethanol and have maintained that level of production on an annualized basis for at least three months, all gasoline sold to consumers for use in motor vehicles operating on public roads must be blended with 10% agriculturally derived, denatured ethanol by volume. If the production of ethanol in Montana drops below 20 million gallons on an annualized basis, the 10% ethanol blend (E10) requirement will no longer apply. All gasoline sold as E10 may not contain more than trace amounts of the additive methyl tertiary butyl ether. (Reference Montana Code Annotated 82-15-121)