Energy

Electricity storage is one of the most important challenges of the energy transition.

dusseldorf The Nant de Drance pumped-storage power station sits high in the Swiss Alps, between two reservoirs. On sunny days, the vast expanses of water, a good 2,000 to 2,200 meters high, glow crystal blue amidst the peaks.

But pumped-storage power plant technology can play to its strengths when the sun isn’t shining to make water sparkle. If renewable energies such as photovoltaics or wind produce too little electricity, Nant de Drance intervenes. The water then flows down from the upper reservoir through a turbine and generates electricity. If there is too much electricity, the power plant pumps the water until it is needed.

For Pascal Radue, buildings like Nant de Drance are crucial for the energy transition. The hydroelectric head of the US technology group General Energy Renewable Energy says: “With pumped-storage power plants, existing wind power plants or photovoltaic parks can be better utilized.” Radue looks forward to an era of expansion.

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Handelsblatt Energy Report

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