pumped hydroelectric storage

Pumped hydroelectric storage is a method of storing energy using two reservoirs at different elevations. When excess electricity is available, water is pumped from the lower reservoir to the upper one. During periods of high energy demand, the stored water is released back down through turbines, generating electricity. This process effectively acts as a giant battery, balancing energy supply and demand, and providing grid stability. It is a reliable and scalable way to store large amounts of energy, especially useful for integrating renewable sources like wind and solar into the power grid.