Pumped Storage Hydro (PSH) plants operate similarly to conventional hydropower plants. However, there is a significant difference between the two: Unlike conventional hydropower plants, PSH can use the same water repeatedly. Therefore, when power from the plant is required to generate electricity, the water flows from the upper reservoir. Gravity enables turbine(s) to rotate generators to produce electricity. Then, the water rests in the lower reservoir until the electricity demand is low. At this point, separate pump(s), or the turbine reverse to repeat the process of pumping water into the upper reservoir. The process is then reset so the water can generate electricity as and when required.