Sustainable, non-petroleum fuel with energy, security, and environmental benefits. Examples include methanol, denatured ethanol, natural gas, hydrogen, electricity from solar, hydro, or wind energy.
any fuel for vehicles other than petroleum-based fuels examples: solar, electric, compressed natural gas, propane, alcohol, and hydrogen biomass - renewable source of energy that has been stored as plant and animal material; producing fuels from living materials or decayed waste materials; examples: manure, wood, compost, ethanol from corn, methane from landfillscalorie amount of heat energy needed to raise the temperature of 1 kilogram of water
An alternative fuel is any fuel other than gasoline and diesel fuels, such as methanol, ethanol, compressed natural gas, and other gaseous fuels. Generally, alternative fuels burn more cleanly and result in less air pollution.