What is pumped storage hydropower? What is the difference between traditional pumped storage and closed loop pumped storage hydropower?
Pumped storage hydropower projects generate electricity to meet peak demand by moving water between two water bodies at different elevations. During periods of low electricity demand, excess power is used to pump water into the higher water body. Subsequently, during periods of high electricity demand, water is released from the upper water body to the lower water body through turbines, generating electricity. Closed loop pumped storage projects (CLPS) are defined as pumped storage hydropower projects using two off-channel reservoirs that do not disrupt existing aquatic ecosystems.