Eos Energy Signs 5 GWh Storage Deal with UK’s Frontier Power

Eos Energy Enterprises, Inc, a US-based leader in zinc-based long-duration energy storage systems, has signed a memorandum of understanding with UK energy developer Frontier Power Ltd. to deliver a framework agreement for 5 GWh of energy storage capacity.

The agreement marks Eos’ first foray into the UK market and supports Frontier’s bids for the UK’s new cap and floor scheme for long-duration energy storage (LDES) administered by Ofgem and the Department for Energy Security and Net Zero.

Boosting Grid Stability and Renewable Integration

Justin Vagnozzi, said, “We are proud to partner with Frontier Power, a respected leader in UK energy development, to bring Eos’ safe and recyclable storage technology to a new market.”

He added, “The novel cap and floor scheme incentivizes investments in long-duration storage technologies that are critical for grid stability and renewable integration. Our participation in this scheme with an established global supply partner like Frontier furthers our commitment to scale our operations, expand our market reach and encourage the adoption of alternative technologies for the energy storage market.”

Eos' eight-hour Znyth™ battery technology is optimized to supply reliable, long-duration storage based on zinc-based chemistry as a clean alternative to lithium-ion. That qualifies it to be a prime solution for the UK's energy supply and demand balancing and drive its clean energy transformation.

Future Expansion and Local Manufacturing on the Table

In addition to the initial agreement, Eos and Frontier plan to explore wider international collaboration. A key element of the deal includes the potential development of manufacturing facilities in the UK should the market for LDES projects using Eos technology scale significantly.

Also read: DOE Announces $303.5 Million Loan Guarantee to Eos Energy for Advanced Battery Manufacturing

The UK’s cap and floor scheme provides long-term revenue stability for innovative storage projects, especially those offering alternatives to lithium-ion technologies. By reducing investment risk, the scheme is expected to unlock significant private sector funding and accelerate deployment of technologies capable of supporting deep decarbonization and energy security.