Columbia Energy Storage Power Company

By SolarCell Microgrid · Jul 17, 2025 · 2-3 min read

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What is the Columbia Energy Storage Project?

A rendering of the Columbia Energy Storage Project, an 20-MW/200-MWh energy storage system Alliant Energy and other utilities plan to build near Portage, Wisconsin. Courtesy of Alliant Energy This audio is auto-generated. Please let us know if you have feedback.

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Who owns the Columbia Energy Center?

Columbia Energy Center is a base load, sub-bituminous coal-fired, electrical power station located south of Portage in the Town of Pacific, Columbia County, Wisconsin. Ownership is 46.2% Wisconsin Power and Light Company (Alliant Energy), 31.8% Wisconsin Public Service (Integrys Energy Group), and 22% Madison Gas and Electric (MGE).

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Could a 20 mw/200 MWh energy storage project be the first?

The 20-MW/200-MWh pilot project in Wisconsin could be “the first of many CO2 batteries to be built in partnership between Energy Dome and Alliant,” an Alliant executive said. A rendering of the Columbia Energy Storage Project, an 20-MW/200-MWh energy storage system Alliant Energy and other utilities plan to build near Portage, Wisconsin.

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Alliant Energy

The Columbia Energy Storage Project is the first long-duration energy storage project of its kind to be developed in the United States. The system’s unique features will boost grid stability and deliver enough electricity to

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Wisconsin Regulators Approve Alliant Energy’s 20MW CO₂ Battery Storage

Jul 24, The Columbia Energy Storage Project will utilize Energy Dome’s closed-loop CO₂ battery system, a novel technology that stores electricity by compressing carbon dioxide gas

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Columbia Energy Storage Project To Pioneer CO2-Based

Sep 14, The Columbia Energy Storage Project is poised to provide enough electricity to power approximately 18,000 Wisconsin homes for 10 hours on a single charge, enhancing grid

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Alliant Energy and Energy Dome sign deal to

Oct 29, A rendering of the Columbia Energy Storage Project, an 20-MW/200-MWh energy storage system Alliant Energy and other utilities plan to build near Portage, Wisconsin.

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Columbia Energy Storage Project Receives

Sep 27, The project will deliver 10 hours of energy storage capacity by compressing carbon dioxide (CO2) gas into a liquid. The company’s proprietary technology is based on a closed thermodynamic

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Energy Storage | Columbia Business School

2 days ago Developments in batteries and other energy storage technology have accelerated to a seemingly head-spinning pace recently — even for the scientists, investors, and business leaders at the forefront of the industry.

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State Regulators Approve Columbia Energy

The innovative Columbia Energy Storage Project, a partnership between the co-owners of the Columbia Energy Center near Portage, Wis., received approval from State regulators in June. The Columbia Energy Storage

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PSDcast – The Columbia Energy Storage Project

Oct 24, Alliant Energy was selected for a grant of up to approximately $30 million from the U.S. Department of Energy’s Office of Clean Energy Demonstrations (OCED) for a proposed 200-megawatt hour energy

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CX-033516: Columbia Energy Storage Project – Phase 1

Jun 18, DOE's Office of Clean Energy Demonstrations (OCED) is proposing to provide funding to Alliant in support of the Columbia Energy Storage Project. The proposed activities

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Alliant Energy’s Columbia Energy Storage Proje

Aug 15, Alliant Energy and its project partners, including WEC Energy Group, Madison Gas and Electric, UW-Madison, Madison College, Shell Global Solutions US and the Electric

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Alliant Energy

The Columbia Energy Storage Project is the first long-duration energy storage project of its kind to be developed in the United States. The system’s unique features will boost grid stability and

📌

Alliant Energy and Energy Dome sign deal to advance

Oct 29, A rendering of the Columbia Energy Storage Project, an 20-MW/200-MWh energy storage system Alliant Energy and other utilities plan to build near Portage, Wisconsin.

📌

Columbia Energy Storage Project Receives DOE Funding

Sep 27, The project will deliver 10 hours of energy storage capacity by compressing carbon dioxide (CO2) gas into a liquid. The company’s proprietary technology is based on a

📌

Energy Storage | Columbia Business School

2 days ago Developments in batteries and other energy storage technology have accelerated to a seemingly head-spinning pace recently — even for the scientists, investors, and business

📌

State Regulators Approve Columbia Energy Storage Project

The innovative Columbia Energy Storage Project, a partnership between the co-owners of the Columbia Energy Center near Portage, Wis., received approval from State regulators in June.

📌

PSDcast – The Columbia Energy Storage Project

Oct 24, Alliant Energy was selected for a grant of up to approximately $30 million from the U.S. Department of Energy’s Office of Clean Energy Demonstrations (OCED) for a proposed

📌

Alliant Energy’s Columbia Energy Storage Proje

Aug 15, Alliant Energy and its project partners, including WEC Energy Group, Madison Gas and Electric, UW-Madison, Madison College, Shell Global Solutions US and the Electric

Columbia Energy Storage Power Company [PDF]

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