EDISON, N.J., Dec. 22, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ: EOSE) ("Eos" or the “Company”) an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced that Russ Stidolph, who has served as non-executive Chair since April 2018 and whose firm, AltEnergy, LLC, has been a lead investor in Eos for the past eleven years, has decided to step dow ...

Core Insights - Eos Energy Enterprises and Frontier Power Ltd. have announced a strategic order for 228 MWh of Eos Z3™ energy storage systems, marking a significant milestone in their partnership aimed at enhancing grid reliability through long-duration energy storage solutions [1][2][3] Partnership and Order Details - The 228 MWh order is the first to be executed under a previously established 5 GWh framework agreement, indicating a strong commitment to scaling alternative energy storage solutions [2] - This partnership is focused on deploying long-duration energy storage systems to support grid reliability across various markets, showcasing the readiness of Eos' technology for large-scale applications [2][3] Technology and Market Demand - Eos' Z3™ technology utilizes proprietary battery management systems and analytics platforms, which will be validated in diverse grid environments as part of Frontier's upcoming projects [3] - Frontier has advanced 11 GWh of long-duration storage projects to the second round of Ofgem's Cap-and-Floor program, all incorporating Eos' technology, reflecting a growing market demand for energy storage solutions that can provide over 8 hours of storage [4] Strategic Vision - The partnership aims to build a scalable platform for long-duration storage, emphasizing the innovative and sustainable nature of Eos' zinc technology, which is designed to support renewable energy growth and provide reliable power for future grid needs [5] - Eos' technology is characterized by enhanced energy density and safety, making it suitable for utility-scale applications and addressing the increasing complexity of grid demands [7]