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

Gran Canaria is maybe greatest recognized for its sandy seashores, everlasting sunshine, and volcanic previous. However remoted removed from the European mainland, the island depends closely on imported fossil fuels to energy its rising financial system — 76% of its electrical energy comes from burning oil. 

In an effort to decarbonise, the federal government has been investing closely in renewable energies to harness the island’s considerable wind and photo voltaic assets. In 2022, renewables made up 24% of the island’s power combine, up from simply 12% in 2018. However as extra renewables come on-line, the island faces one other drawback: storage.   

Final 12 months, the federal government invested €400m within the Canary Islands’ first-ever power storage scheme, to stabilise the grid when the wind isn’t blowing or the solar isn’t shining. This challenge received’t construct battery packs, nevertheless, however convert two current dams into one big water battery.

Salto de Chira, because the ‘pumped hydro’ challenge is thought, will pump water from the Soria dam into the Chira dam — which sits at a better elevation — in periods of low power demand. In periods of excessive power demand, water can be launched from Chira, down a tunnel, over a set of generators, and again into Soria. And the cycle continues.