Hydrostor enables the transition to a cleaner and more flexible electricity grid. Hydrostor is the world’s leader in Advanced Compressed Air Energy Storage (A-CAES). Hydrostor’s utility-scale long duration energy storage solution is synchronous and emission-free and can store hundreds of MWs for 8-24+ hours. Its proprietary design can be built where the grid needs it most – including replacing retired fossil fuel plants and displacing new transmission. With its global engineering partners Hydrostor offers a complete solution from financing to construction.