Answer:
These pumps allow the energy to be saved for future use, whenever the load increases.
Step-by-step explanation:
Pumped-storage hydropower (PSH) is a type of hydroelectric energy storage. It is a configuration of two water reservoirs at different elevations that can generate power (discharge) as water moves down through a turbine; this draws power as it pumps water (recharge) to the upper reservoir.
PSH capabilities can be characterized as open-loop—where there is an ongoing hydrologic connection to a natural body of water—or closed-loop, where the reservoirs are not connected to an outside body of water.