Pumped storage plant

I read about the concept of pumped storage plant in 2020. Now I am seeing its discussion happening in India.

The Daily Brief explaning the concept with a nifty little diagram.

Here’s how a PSP basically works. It has electric pumps that are powered using solar. So, when you have excess solar power at midday, the PSP pumps water uphill from a lower reservoir to an upper one. Come sunset, when solar dies and demand spikes the PSP releases the same water, whose downhill gravity powers wind turbines. The water also gets stored back again in the lower reservoir.

In short, a PSP uses energy conversion to ensure that excess power is never wasted.

Image credits: The Daily Brief