Alternative Fuel Definition

Alternative fuel is defined as compressed natural gas, propane, ethanol, or any mixture containing 85% or more ethanol (E85) with gasoline or other fuels, electricity, or any other fuels, which may include clean diesel and reformulated gasoline, so long as the Colorado Air Quality Control Commission determines that these other fuels result in comparable reductions in carbon monoxide emissions and brown cloud pollutants. Alternative fuel does not include any fuel product that contains or is treated with methyl tertiary butyl ether (MTBE). (Reference Colorado Revised Statutes 25-7-106.8)