Italian long-duration energy storage company Energy Dome SpA announced on Wednesday that it has signed a supply contract with Alliant Energy Corp to provide its 20-MW/200-MWh CO2 Battery for the Columbia Energy Storage Project in Wisconsin. This contract marks Energy Dome's first commercial-scale deployment of its CO2 Battery in the United States.
The Columbia Energy Storage Project previously received up to $30 million (approximately €27.7 million) in funding from the US Department of Energy last year. Alliant Energy has also filed an application for the project with the Public Service Commission of Wisconsin (PSC). Once operational, the facility will have the capacity to power around 18,000 homes for 10 hours on a single charge.
The design of the facility will mirror Energy Dome's inaugural standard CO2 Battery plant in Sardinia, Italy, which is slated for completion by the end of the first quarter of 2025. The company claims that the unique properties of carbon dioxide enable the system to store energy efficiently and cost-effectively through a patented thermodynamic process.
Claudio Spadacini, CEO of Energy Dome, highlighted that the collaboration with Alliant Energy goes beyond innovation, focusing on creating opportunities for significant deployment in the US energy sector. Raja Sundararajan, executive vice president of Alliant Energy, noted, “After a thorough evaluation of technologies available in the market, the Energy Dome's CO2 Battery stood out as a cost-effective, efficient and scalable solution. We see this as the first of many CO2 Batteries to be built in partnership between Energy Dome and Alliant to continue delivering reliable and affordable energy in the communities we serve.”
