Energy Vault to deploy gravity battery inside 1640-feet-deep mine shafts in Italy

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By Abhishek Bhardwaj, Interesting Engineering. 

Excerpt: Two firms, Energy Vault, and Carbosulcis, have announced a collaboration to build a 100-megawatt hybrid gravity energy storage project to accelerate the carbon-free technology hub at Italy’s largest former coal mining site in Sardinia. ...The collaboration is to develop a 100MW Hybrid Gravity Energy Storage System, a solution designed by Energy Vault for underground mines, pairing their modular gravity storage and batteries. According to a press release by Energy Vault, the energy storage solution will be deployed 1640 feet (500 meters) deep mine shafts. ...According to the press release by Energy Vault, the project is essential for the Sardinia government’s targeted conversion of the coal mine to a carbon free technology hub. ...The solution’s design will be optimized to fully benefit from the mine shaft’s area and location, especially the 1640 feet depth at which it is planned to be constructed.... 

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