Common types of alternative energy

Solar energy

Solar energy is generating of electricity from the sun. It is split up into two types, thermal and electric energy. These two subgroups mean that they heat up homes (and water) and generate electricity respectively.

Wind energy

Wind energy is generating of electricity from the wind.

Geothermal energy

Geothermal energy is using hot water or steam from the Earth’s interior for heating buildings or electricity generation.

Biofuel and ethanol

Biofuel and ethanol are plant-derived substitutes of gasoline for powering vehicles.

Hydrogen

Hydrogen is used as clean fuel for airplanes, spaceships, and vehicles.