Eos Energy Enterprises Inc., a US provider of zinc-based energy storage systems, has signed a memorandum of understanding with Frontier Power Ltd., a UK-based energy developer, for a 5 GWh collaboration framework. The agreement marks Eos’ first entry into the UK market and supports Frontier’s plans to utilise Znyth™ battery technology in the initial application window of the UK’s long-duration energy storage cap and floor mechanism.
The cap and floor scheme, administered by the Office of Gas and Electricity Markets (Ofgem) and the Department for Energy Security and Net Zero, is designed to provide revenue certainty to innovative storage technologies while promoting alternatives to lithium-ion batteries. In this context, Eos intends to deliver batteries capable of up to eight hours of energy storage, aligning with the UK’s grid stability and renewable integration targets.
Partnership includes local manufacturing potential
The agreement also outlines a potential extension to additional international markets and paves the way for possible local manufacturing in the UK. Should large-scale long-duration energy storage projects be realised, this could lead to the establishment of industrial operations in the UK, supporting local supply chains and employment.
Joe Mastrangelo, Chief Executive Officer of Eos, highlighted the company’s supply chain strategy as being designed for proximity to demand. He stated that this adaptability would meet increasing global needs for alternative storage solutions, offering both technological performance and local economic benefits.
Strengthening transatlantic energy trade
For Frontier Power, the agreement fits within a broader strategy of technological diversification and reinforcing transatlantic trade relations. Humza Malik, Chief Executive Officer of Frontier, stated that the partnership could drive the development of local manufacturing capacity and contribute to UK economic activity, particularly in advanced energy sectors.
Both companies confirmed that the agreement will be incremental to Eos’ order backlog as of 31 March 2025 and will be included in its Q1 2025 financial reporting. No financial terms were disclosed.
