Google and Energy Dome to Build 200MWh CO2 Battery Project in Ireland

en.Wedoany.com Reported - Google and Italian CO2 battery manufacturer Energy Dome have announced plans to build a commercial energy storage facility in County Offaly, Ireland. The project will deploy a 23MW/200MWh CO2 Battery system, developed under the partnership established between the two companies last year.

The plant uses technology that stores and releases electricity by compressing CO2: during charging, grid electricity compresses and stores CO2, and when power is needed, the CO2 expands through a turbine to generate electricity and feed it back to the grid. Energy Dome will be responsible for the project's development, ownership, and operation.

This project is the first bilateral commercial contract signed between Google and Energy Dome for CO2 battery technology. Vanessa Hartley, Google's Ireland lead, stated that Google is committed to catalyzing next-generation energy technologies to enhance grid resilience and introduce critical energy storage capacity to the system; this milestone is the next step in the long-term partnership, helping to scale promising long-duration energy storage technology and advancing toward an affordable, secure, and clean energy future.

The new facility is located near the town of Rhode in County Offaly, situated at a grid node connecting high-voltage lines to the Dublin region. The site, a former peat-fired power station, will repurpose this brownfield land for a clean energy project. The project is being developed in collaboration with local company Lumcloon Energy, headquartered in the Midlands region. Energy Dome stated that the plan will bring job opportunities and community benefits.

The Irish government has identified long-duration energy storage (LDES) as key to ensuring electricity supply security, reducing system costs, and supporting the target of 80% renewable electricity by the end of this decade. By storing excess electricity and releasing it during periods of high demand or grid stress, the CO2 battery project helps alleviate local grid congestion and better manage the country's renewable energy.

Claudio Spadacini, founder and CEO of Energy Dome, expressed pride in collaborating with Google to advance a project that enhances grid resilience and paves the way for round-the-clock carbon-free energy in Ireland. This project is the first commercial bilateral deployment under the strategic partnership, with plans to develop more CO2 battery projects in Europe, North America, and the Asia-Pacific region.

The County Offaly site has secured planning permission, land rights, and grid connection, with state-owned transmission system operator EirGrid granting a ten-year capacity contract. The project is expected to begin operations in 2028, with plans for a second 200MWh unit at the same location.

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