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Form Energy, an American energy storage company, and FuturEnergy Ireland, a leading Irish clean energy developer, announced an agreement to jointly deploy a 10 MW / 1,000 MWh iron-air battery system in northwest Ireland. The project, anticipated to come online in 2029, will demonstrate the value of multi-day energy storage in supporting Ireland’s grid reliability and clean energy targets. This marks Form Energy’s first international deployment of its iron-air battery technology.

The agreement was signed at Form Energy’s headquarters in Somerville, Massachusetts, with Irish and U.S. officials in attendance, including Ireland’s Minister for Foreign Affairs and Trade Helen McEntee. The project aligns with Ireland’s 2024 Electricity Storage Policy Framework, which identifies long-duration energy storage as key to building a clean and reliable electricity grid by 2030. Form Energy’s technology uses iron, water, and air to store energy at a lower cost than conventional batteries.

Analysis from Form Energy suggests that integrating multi-day energy storage into Ireland’s 2030 portfolio could reduce renewable energy curtailment and lower energy generation costs by over 25% annually. Peter Lynch, CEO of FuturEnergy Ireland, stated the project will provide a first opportunity to deliver large volumes of clean power across multiple days, addressing grid congestion and wasted renewable energy.

The battery technology is being developed in Massachusetts, a hub for clean technology innovation. FuturEnergy Ireland, a joint venture between ESB and Coillte, aims to deliver 1 GW of clean electricity by 2030 through wind and battery storage projects. The partnership reflects growing collaboration between Ireland and the U.S. in advancing next-generation energy solutions.