en.Wedoany.com Reported - Italian carbon battery developer Energy Dome has expanded its partnership with Google to develop renewable energy storage infrastructure in Ireland. The two parties have signed a commercial contract to build a 23 MW/200 MWh battery energy storage system using Energy Dome's patented carbon technology.
The core of this technology involves using grid electricity to compress and store carbon dioxide. When electricity is needed, the CO2 is expanded through a turbine to drive a generator, producing power that is fed back into the grid. This process does not rely on lithium or other minerals constrained by supply chains, while offering long-duration energy storage capabilities, providing greater flexibility to the grid.
The Irish project has secured land, planning permission, and grid connection, and has been awarded a 10-year capacity contract by transmission system operator Eirgrid. The project is expected to be operational in 2028, with the facility to be built in County Offaly, near high-voltage lines serving the Greater Dublin area, adjacent to the solar and wind power generation cluster at Rhode Green Energy Park. The project site was originally a peat-fired power plant. The facility will be owned and operated by Energy Dome, and the developer also plans to develop a second 200 MWh unit at the same location.
Energy Dome CEO Claudio Spadacini stated that, as part of the partnership with Google, the Irish project will set a precedent for more carbon battery projects in Europe and globally. Spadacini said the project will enhance grid resilience and pave the way for Ireland to achieve round-the-clock carbon-free energy. This is the first commercial bilateral deployment project under the strategic collaboration between the two companies, aiming to promote CO2 battery projects in Europe, North America, and the Asia-Pacific region.
Google initially established its partnership with Milan, Italy-based Energy Dome in July 2025. Previously, the two parties announced in June that they would build a 19 MW/200 MWh carbon battery in Arizona, located at the Colorado Generating Station of local utility Salt River Project (SRP), supported by Google's cost-sharing agreement for long-duration energy storage. The Arizona battery is also built on the site of a former fossil fuel power plant.
Vanessa Hartley, Google's Ireland Lead, stated that Google is committed to advancing next-generation energy technologies to enhance grid resilience and introduce critical storage capacity to the system. This milestone represents another step in the long-term partnership, helping to scale up long-duration energy storage technology and move toward an affordable, secure, and clean energy future.
