Question

How to store solar energy

Answer 1

when electricity is needed later , heat is transfered from the molten salt to water , using a heat exchanger generate steam to drive a turbine . a second method of harnessing and storing solar energy is to employ sunlight to produce a fuel .

Answer 2

converting the sun's energy into heat, which is then captured in thermal storage tanks. Abengoa, a renewable energy firm based in Spain, has already built several solar plants that store excess energy in molten salt, which can absorb extremely high temperatures without changing state. Abengoa recently secured yet another contract to build a salt-based 110 mega-watt solar storage plant in Chile, which should be able to store 17 hours of energy in reserve.