In the European Union, alternative fuel is defined by Directive 2014/94/EU of the European Parliament and of the … See more

Biofuels are also considered a renewable source. Although renewable energy is used mostly to generate electricity, it is often assumed that some form of renewable energy or a percentage is used to create alternative f… See more

Methanol and ethanol fuel are primary sources of energy; they are convenient fuels for storing and transporting energy. These alcohols can be used in internal combustion engines as alternative fuels. Butane ha… See more

Ammonia (NH3) can be used as fuel. Benefits of ammonia for ships include reducing greenhouse gas emissions. Nitrogen reduction is being considered as a possible component for fuel cells and combustio… See more

Emulsified fuels include multiple components that are mixed to a water-in-oil emulsion, which are created to improve the fuels combustive properties. Diesel can also be emulsified with water to be used as a fuel. It hel… See more

Carbon-neutral fuel is synthetic fuel—such as methane, gasoline, diesel fuel or jet fuel—produced from renewable or nuclear energy used to hydrogenate waste carbon dioxide recycled from power plant flue exhaust gas or … See more

Hydrogen is an emissionless fuel. The byproduct of hydrogen burning is water, although some mono-nitrogen oxides NOx are produced when hydrogen is burned with air.
Another fue… See more