About

At ESS, we deliver safe, sustainable, long-duration energy storage to ensure energy abundance and security. As energy demand continues to grow, our solutions provide essential reliability and resilience to people, communities, and businesses in the United States and throughout the world. Our technology uses earth-abundant iron, salt and water to deliver environmentally safe solutions capable of providing 10+ hours of flexible energy capacity for commercial and utility-scale energy storage applications. Established in 2011, ESS enables project developers, independent power producers, utilities and other large energy users to deploy reliable, sustainable long-duration energy storage solutions.