Old 04-21-2016, 08:43 AM
Sparty Sparty is offline
Join Date: Mar 2009
Posts: 1,147
Default Pumped storage and generation

The principle behind pumped storage is both simple and ingenious at the same time. Pumped storage power plants are an energy storage system and a hydroelectric power plant in one. If there is surplus power on the grid, the pumped storage power station switches to pumping mode: an electric motor drives pump turbines, which pump water from a lower reservoir to a higher storage basin. If the demand for electricity in the grid rises, water is released from the upper basin via a pressure pipeline to the bottom. The water causes the pump turbines to move, which now operate in turbine mode and are used in turn to drive the generators. Within seconds, electricity is generated and fed back into the electricity grid.
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