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@ Wulfgang
2025-05-23 17:31:36How giant concrete balls on ocean floors could store #renewable #energy https://newatlas.com/energy/stensea-concrete-spheres-ocean-floor-energy-storage/ > In an effort to reduce the use of precious land to build renewable energy storage facilities, the Fraunhofer Institute has been cooking up a wild but plausible idea: dropping concrete storage spheres down to the depths of our oceans.