From dropping weights down old mine shafts to pumping compressed air into caves, companies are racing to develop inventive new solutions to store renewable energy as European nations try to move away from Russian fossil fuels.
Expanding storage is vital to ensure a consistent supply of electricity as countries shift to using more clean power from wind turbines and solar panels, which do not provide round-the-clock supplies, analysts say.
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KEYWORDS
Europe,
energy,
gas,
Russia,
solar,
Ukraine,
Climate change,
renewables,
wind,
hydropower,
Russia-Ukraine war
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