Pumped storage peak load plants

Explain pumped storage peak load plants with diagram.

Diagram-

Pumped storage peak load plant-

   1)    Pumped storage peak load plants are designed such as to supply water from tail race to head race (Dam) during dry seasons.

   2)    The power required for pumps, for pumping action of water from tail race which is supplied externally.

   3)    Nowdays, in advanced power plants the water is pumped using same hydraulic turbine as when turbine rotates in one direction then pump rotates in opposite/reverse direction and pumping of water take place.

   4)    These type of power plants required less water for operation compared to other type of power plants.

fig.Pumped storage peak load plant