Based in Oregon, Energy Storage Systems manufactures a cost-effective, reliable, and environmentally friendly All-Iron Flow Battery (IFB) that expands the use of renewables. ESS Inc. manufactures low-cost, long-duration iron flow batteries for commercial and utility-scale energy storage applications requiring 4+ hours of flexible energy capacity. Its product, the Energy Warehouse™ (EW), uses iron, salt, and water for the electrolyte, and delivers an environmentally safe, long-life energy storage solution for the world’s renewable energy infrastructure.
With its safe, earth-abundant, proven all-iron flow battery technology, ESS is helping project developers, utilities, and EPCs make the transition to more flexible non-lithium-ion storage that is better suited for the grid and the environment.

