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    Alliant Energy seeking Wisconsin regulatory approval for 99-MW Battery Storage site in Sheboygan

    March 2, 2023
    Construction could begin by 2024 and would go into commercial operation once the coal-fired Edgewater Generating Station is closed a year later
    Decorah battery storage image credit Alliant Energy
    Decorah Alliant Battery Storage 640106028858a

    Independent power producer Alliant Energy is developing a battery energy storage system next to a retiring power station to serve a key energy hub in eastern Wisconsin.

    Alliant Energy is seeking state regulatory approval to install the 99-MW Edgewater Battery project in Sheboygan. Construction could begin by 2024 and would go into commercial operation once the coal-fired Edgewater Generating Station is closed a year later.

    “This battery system represents the next phase of energy generation that will enable more sustainable growth and greater resiliency,” said David de Leon, president of Alliant Energy’s Wisconsin energy company. “The Edgewater Battery Project is a smart investment that strengthens our generation portfolio while leveraging the historic energy investments in the Sheboygan community.”

    Nearby, Alliant is developing plans for another 175 MW of BESS capacity at sites in Grant and Wood counties. The utility also has put together a $3 million battery-based microgrid to support the Village of Boaz in Wisconsin.

    The Boaz microgrid can be islanded allowing the 250-kW battery storage to provide electricity for up to eight hours in the community.

    The battery storage initially will be energized by the main Alliant grid. In the future, solar power capacity could be added.

    Late last year, the Iowa city of Grinnell announced intentions to partner with Alliant on developing a 1.59-MW solar energy farm to support the municipal grid.

    Alliant Energy will design, construct, own, operate and maintain the solar project. The City of Grinnell will receive annual fixed lease payments over the next 20 years.  

    The utility also has developed a battery storage project in Decorah, Iowa. 

    About the Author

    Rod Walton, EnergyTech Managing Editor | Senior Editor

    For EnergyTech editorial inquiries, please contact Managing Editor Rod Walton at [email protected].

    Rod Walton has spent 15 years covering the energy industry as a newspaper and trade journalist. He formerly was energy writer and business editor at the Tulsa World. Later, he spent six years covering the electricity power sector for Pennwell and Clarion Events. He joined Endeavor and EnergyTech in November 2021.

    Walton earned his Bachelors degree in journalism from the University of Oklahoma. His career stops include the Moore American, Bartlesville Examiner-Enterprise, Wagoner Tribune and Tulsa World. 

    EnergyTech is focused on the mission critical and large-scale energy users and their sustainability and resiliency goals. These include the commercial and industrial sectors, as well as the military, universities, data centers and microgrids. The C&I sectors together account for close to 30 percent of greenhouse gas emissions in the U.S.

    He was named Managing Editor for Microgrid Knowledge and EnergyTech starting July 1, 2023

    Many large-scale energy users such as Fortune 500 companies, and mission-critical users such as military bases, universities, healthcare facilities, public safety and data centers, shifting their energy priorities to reach net-zero carbon goals within the coming decades. These include plans for renewable energy power purchase agreements, but also on-site resiliency projects such as microgrids, combined heat and power, rooftop solar, energy storage, digitalization and building efficiency upgrades.

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