Italy’s Energy Dome Opens CO2 Battery Factory. Key Components Head to the US, India and Ireland

Italian company Energy Dome, a pioneer in long-duration energy storage, has opened its first manufacturing facility in Piacenza, northern Italy. The factory will produce key components for the company’s proprietary carbon dioxide battery systems, including its distinctive large-scale domes used for gas storage.

Italian Manufacturing to Support Major Projects in the US, India and Ireland

The facility has already begun fulfilling orders for international partners. The first dome, manufactured entirely at the Italian plant, has been shipped to India for the Kudgi project (20 MW / 160 MWh), being developed in partnership with state-owned energy company NTPC.

Production is currently underway in Piacenza for components destined for further large-scale projects:

• United States – the Columbia Energy Storage project (20 MW / 200 MWh) in Wisconsin, being developed in partnership with Alliant Energy.
• Ireland – a 23 MW / 200 MWh energy storage facility located in Rhode.

The company has invested approximately €2 million to date in upgrading the facility and purchasing machinery and equipment. Over the next two years, total investment is expected to rise to €6.5 million, enabling the company to triple its production capacity and increase its workforce from 30 to 80–90 employees by 2028.

Independence of the European Supply Chain

Importantly, Energy Dome relies entirely on a European supply chain for its technology, primarily sourcing steel and turbomachinery from European suppliers. This approach allows the company to avoid dependence on Asian suppliers.

The company has a portfolio of operational or contracted projects totaling more than 2 GWh, permitted projects representing 3 GWh, and a development pipeline exceeding 30 GWh across four continents. Its partners and customers include major players such as Google, Engie, Alliant Energy, NTPC and SRP.

The technology’s development is also supported by regulations in Energy Dome’s home market. Italian transmission system operator Terna estimates that the country will need 50 GWh of energy storage capacity by 2030.