Method for storing energy and recovering the stored energy

摘要

The energy storage system according to an embodiment of the present invention includes a storage tank having a sealable inner space and a space for storing water, A reservoir connected to the reservoir, a flow path for selectively allowing or blocking the movement of water between the reservoir tank and the reservoir, and a reservoir tank for forcibly injecting the water of the reservoir into the storage tank so that the air in the reservoir tank is compressed. And a generator for generating electric power by using water that is moved from the storage tank to the reservoir by the pressure of air in the storage tank.