fuel
a material that releases energy when it burns
biomass fuel
Fuel that derives from plant material and animal waste.
hydrocarbon
Compounds composed of only carbon and hydrogen
peat
partially decayed plant matter found in bogs
fossil fuel
Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.
photovoltaic cell
A mechanism which converts solar energy directly into electricity.
hydroelectric energy
Electrical energy produced by falling water
geothermal energy
The energy produced by heat within the earth
nuclear fission
The process by which a large nucleus is split into smaller nuclei
energy efficiency
A way of managing and restraining the growth in energy consumption
cogeneration
production of two forms of energy from one source
sustainable energy
The global management of the Earth's energy resources to a degree to which it will last with the most efficiency.