Alternative fuels, for transportation applications, include the following: methanol denatured ethanol, and other alcohols fuel mixtures containing 85 percent or more by volume of methanol, denatured [..]

low-polluting, nongasoline fuels such as electricity, hydrogen, propane, compressed natural gas, liquid natural gas, methanol, and ethanol

Alternative fuel is governed by federal and state laws, which vary by state. Alternative fuels are typically not based on petroleum and are desirable because they help provide energy security and envi [..]

Any fuel that does not come from original sources such as oil or coal. This can include biofuels or liquefied petroleum gas (LPG).

— A liquid or gaseous nonpetroleum fuel, used to power transit vehicles. Usually refers to alcohol fuels, mineral fuels, natural gas, and hydrogen.

Where alternative energy refers generally to large scale power generation, fuel refers to a substance used to generate energy: biofuels, hydrogen, methanol, etc.

are fuels such as methanol, ethanol, natural gas, and liquid petroleum gas that are cleaner and help to meet mobile and stationary emission standards. These fuels may be used in place of less clean fu [..]

A fuel that can replace ordinary gasoline. Alternative fuels may have desirable energy efficiency and pollution reduction features. Alternative fuels include compressed natural gas (CNG), alcohols, liquefied petroleum gas (LPG), and electricity.

A fuel which can be used as an alternative to fossil fuels such as oil and coal. Alternative fuels include biofuels, liquefied petroleum gas (LPG) and fuel cells. They are considered to have less envi [..]

Substitute for traditional motor vehicle fuels like gasoline and diesel.; includes biodiesel, ethanol, and compressed natural gas.