Technical FAQs 4

What is pumped storage power station (PSPS)?

The pumped storage power station (PSPS) is a special power source that has flexible operation modes and multiple functions. With the rapid economic development in China, the energy demand and the peak-valley load difference of the power grid are continuing to increase.

How many kilowatts a year does the State Grid generate?

"Since 2021, the annual power generation growth rate of the State Grid's pumped-storage power stations has remained above 18 percent, with an average of over 28 billion kilowatt-hours of new energy accommodated each year," said Le Zhenchun with the State Grid.

How many electrochemical storage stations are there in 2022?

In 2022, 194 electrochemical storage stations were put into operation, with a total stored energy of 7.9GWh. These accounted for 60.2% of the total energy stored by stations in operation, a year-on-year increase of 176% (Figure 4).

Why do we need a pumped-storage power station?

To cope with the instability of wind and solar power output, a pumped-storage power station is needed to regulate and ensure the safe operation of the power grid, as well as reducing the waste of unused renewable energy.

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Annual power generation of energy storage power station

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