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Energy Dome state regulator approval

CO2 Battery startup Energy Dome’s 10-hour Wisconsin battery approved

July 22, 2025
Energy Dome and Alliant Energy’s 200MWh long-duration energy storage (LDES) project in Wisconsin, US, has been approved by state regulators.
Illustrative rendering of how the project may look. Image: DTE Energy via LinkedIn

US DOE offers US$23 billion loan to eight utilities days before Trump inauguration

January 17, 2025
Days before Donald Trump’s presidential inauguration, the US Department of Energy’s (DOE) Loan Programs Office (LPO) has announced US$22.92 billion in loans across eight projects.
Rendering of of Energy Dome’s first full-scale CO2 Battery in Ottana, Sardinia, Italy. Image: Energy Dome.

Utility Alliant Energy seeks Wisconsin regulator’s approval for long-duration CO2 Battery storage project

August 20, 2024
US utility company Alliant Energy has moved forward with a long-duration energy storage project based on carbon dioxide-based technology.
edgewater generation station plant battery storage alliant

Utility Alliant Energy plans c.400MWh BESS at retiring coal plant in Wisconsin

February 2, 2023
Utility Alliant Energy will deploy a 99MW/396MWh battery energy storage system (BESS) at a coal plant which it will retire in 2025.
alliant energy wisconsin

Utility Alliant Energy plans 700MWh BESS deployments in Wisconsin

October 3, 2022
Wisconsin utility Alliant Energy has announced plans to deploy two projects totalling 175MW/700MWh of battery energy storage in the midwestern state.

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