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Here are humanity's best ideas on how to store energy Pumped storage. Pumped storage is possibly one of the oldest forms of modern grid-tied energy storage, and it certainly packs the most punch as far as megawatt-hours delivered. Compressed air energy storage. ... Molten Salt Thermal Storage. ... Redox Flow Batteries. ...What are the methods of storing energy?
Currently, the most efficient method of storing electricity on large scales is by using pumped hydroelectricity. You use electric pumps to lift water against gravity, converting electric energy into gravitational potential energy. Then when you need the electricity, you run that water through a turbine,...