Spanish island builds ‘giant water battery’ to boost energy security

By Siôn Geschwindt

Gran Canaria is perhaps best known for its sandy beaches, eternal sunshine, and volcanic past. But isolated far from the European mainland, the island relies heavily on imported fossil fuels to power its growing economy — 76% of its electricity comes from burning oil.  In an effort to decarbonise, the government has been investing heavily in renewable energies to harness the island’s abundant wind and solar resources. In 2022, renewables made up 24% of the island’s energy mix, up from just 12% in 2018. But as more renewables come online, the island faces another problem: storage.    Last year, the government…

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