Energy Dome, an innovator in long-duration energy storage, has secured a major deal to supply its CO₂ Battery system for the Columbia Energy Storage Project in Wisconsin, in partnership with Alliant Energy. The agreement represents a key milestone in advancing energy storage solutions in the US, backed by a Cooperative Agreement award of up to $30 million from the U.S. Department of Energy’s Office of Clean Energy Demonstrations.
Alliant Energy has recently submitted its application for the project to the Public Service Commission of Wisconsin (PSC), marking a significant step forward in the development of renewable energy infrastructure in the region. The Columbia Energy Storage Project will feature a 20MW/200MWh CO₂ Battery system, providing up to 10 hours of power for 18,000 homes, enhancing energy reliability and reducing carbon emissions.
Claudio Spadacini, CEO of Energy Dome, highlighted the importance of this project for North America’s energy sector. He said, “This collaboration with Alliant Energy marks a major advancement for long-duration energy storage. Our CO₂ Battery technology has the potential to transform how energy is stored and managed across the US, offering cost-effective and scalable solutions for the future.”
The CO₂ Battery, designed by Energy Dome, is a modular system that captures and stores carbon dioxide for use in generating power over extended periods. Unlike traditional batteries, the CO₂ system can operate efficiently over longer durations, addressing a crucial need in renewable energy storage.
Alliant Energy’s Executive Vice President, Raja Sundararajan, praised the collaboration with Energy Dome, stating, “This contract for the Columbia Energy Storage Project is a major step forward in our efforts to deliver reliable and affordable energy to our communities. The CO₂ Battery stood out as the best choice for its efficiency, scalability, and ability to meet our renewable energy goals.”
The project in Wisconsin will also benefit from the experience gained at Energy Dome’s first CO₂ Battery plant in Sardinia, Italy, which is set to be completed by early 2025. The Sardinian facility is being used as a testbed for both construction and operational efficiency, with lessons learned expected to streamline the construction of the US plant.
The standardised design of the CO₂ Battery allows for quick deployment, ensuring that once operational, the Columbia Energy Storage Project will provide a reliable energy source and help reduce the reliance on fossil fuels. Both companies are optimistic that this partnership will set the stage for further collaboration and the potential rollout of more CO₂ Battery systems across the US.
Energy Dome’s innovative storage solution could pave the way for other utilities and energy providers to adopt similar technologies, as the industry continues to seek sustainable methods to manage the transition to renewable energy. The success of this project is expected to strengthen the case for large-scale implementation of long-duration energy storage in the global market. For more information on Energy Dome’s projects, please visit energydome.com.