Hydro electricity captures energy from falling water.
Nuclear energy uses nuclear fission to release energy in a storage.
Wind energy is the generation of electricity from the wind.
Solar energy is the use of sunlight. Light can be changed into thermal (heat) energy and electric energy.
Geothermal energy is the use of the earth's internal heat to boil water for heating buildings or generating electricity.
Biofuel and Ethanol are plant-derived gasoline substitutes for powering vehicles.
Hydrogen can serve as a means of delivering energy produced by various technologies.