At their core, energy storage power stations use large-scale batteries to store electricity when there is an excess supply, such as during periods of low demand or high renewable generation. When demand increases or renewable generation drops, the stored electricity is released. . Energy storage in power stations employs various innovative techniques to ensure a stable supply. Hydro storage utilizes gravitational potential energy, allowing water to be pumped uphill during low demand and released for electricity generation during peak periods. Battery storage systems. . Electrical energy is a form of energy that cannot be stored directly, but has to be transformed into other forms, such as chemical, thermal, mechanical or potential energy; these forms of energy can then be converted back into electrical energy when needed.
