Concrete balls are fantastic batteries, now California sunk a 9-meter ball in the ocean-and is already planning versions with 30 meters
Apparently simple balls from concrete can save electricity when they are sunk into hundreds of meters? Yes! (Image source: Adobe Firefly, generative AI) A field made of tons -heavy balls on the sea floor – gray, inconspicuous and yet they are a piece of puzzle of the energy supply of tomorrow. Europe scientists are planning ...












