Renewable Energy comes from sources that do not deplete over years such as sun, wind, oceans and plants.
Renewable energy technologies convert those source of primary energy such as wind and solar to energy forms that we can readily use, including heat and electricity. There are numerous ways to convert primary energy forms into consumable forms of energy. However, electricity cannot be stored and has to be consumed instantly. Due to the intermittent nature of many renewable sources, the issue of storing electricity is of particular importance. Surplus energy can be used to re-charge batteries or some other industrial purpose.
