Diagram of pumped storage hydro power plant:
Explanation: In this power plant, generator is so designed that it Converts mechanical power into electrical power and also works as a motor i.e. converts electrical power into mechanical power And water turbine is so designed that when it is rotated then it works as a centrifugal pump.
Following are the Advantages of Pumped storage Power Plant (PHPP): 1. It saves water by reusing same water again & again. 2. There is less expenditure during pumping of water because water is pumped when surplus (extra) power is available. 3. It can be put into service immediately; hence it is useful to supply power during peak load period. 4. It increases load factor of power plant 5. It helps in reducing a reserve capacity of PP as it provides additional power during peak load period.