Eos Energy wins Golden Dome contract for mission-ready long-duration power

Eos Energy Enterprises (NASDAQ: EOSE) has been awarded a Golden Dome for America contract by the US Department of War to integrate mission-ready long-duration energy storage supporting the nation's missile-defence shield. The award was announced on 15 July 2026 and highlighted by President Donald Trump at Senator Dave McCormick's Defense and National Security Summit in Carlisle, Pennsylvania.

Under the initiative, Eos's Z3 zinc-based long-duration energy storage (LDES) technology will first be deployed as an initial prototype at a critical installation to secure power infrastructure and strengthen mission readiness. The programme is structured to scale as national defence needs evolve. The award value was described as multi-million-dollar but not formally disclosed.

Manufactured and assembled in Pittsburgh, Pennsylvania, Eos's proprietary non-flammable aqueous zinc chemistry carries approximately 91% domestic content and a predominantly US-based supply chain. The system is Section 842 NDAA- and FEOC-compliant. Production runs through the company's Thorn Hill facility, where a second battery line is now in commercial production as Eos works toward 8 GWh of annual capacity in Allegheny County.

"This award validates the strategy we've built around American technology innovation, manufacturing and supply chains," said CEO Joe Mastrangelo. Long-duration storage is increasingly treated as a strategic capability for keeping defence and critical infrastructure operationally ready during extended outages.

Source: Eos Energy press release, 15 July 2026.