alternative fuels
Non-petroleum power sources
Alternative fuels are energy sources used in place of conventional petroleum-based gasoline and diesel.
The category includes natural gas, propane, electricity, hydrogen, biodiesel, and ethanol.
The term gained currency as concerns about oil dependency and environmental impact grew: The city converted its bus fleet to alternative fuels.
What counts as "alternative" shifts as energy markets evolve.
- biodieselPlant-based motor fuel
- ethanolDrinkable volatile spirit
- flex fuelAdaptable fuel system
- hydrogen fuelEnergy from lightest element
- biofuelsFuel from living matter
cellulosic · renewable energy · green revolution · biomass · propane · algae · fuel cells · fossil fuel · decarbonization · carbon footprint · clean energy · zero emissions · fuel economy · battery · electric vehicles · emissions reduction · charging · geothermal
- fuelfuel, diesel, gasoline, petroleum, crude oil
- aviation pollutionaircraft noise, carbon emissions, contrails, emissions, engine emissions
- Energy Researchfusion research, nuclear research, research funding, research grants, DOE
- green transportelectric car, electric vehicles, electric bus, EVs, electric bike
- Hydrogen Energyfuel cells, hydrogen fuel, electrolysis, hydrogen gas, fueling stations
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