Sizable Energy is a Milan, Italy based clean-energy company developing offshore pumped hydro energy storage. Its patented system pairs subsea and floating reservoirs connected by pipes with reversible pump-turbines that move saturated sea-salt brine between them to deliver long-duration, grid-scale energy storage.
company energy-storage offshore renewable-energy clean-energy energy-transition apis-json pumped-hydro long-duration-energy-storage
-
Updated
Aug 4, 2026