We are Wisconsin’s largest owner and operator of solar energy generation.

Alliant Energy is working tirelessly to achieve net-zero CO2 emissions from the electricity we generate by 2050. We’re proud to leverage new technology and locally generated energy solutions to increase customer value and help avoid long-term costs. The development of solar energy resources is just one way we’re diversifying our electric generation portfolio and increasing access to clean, reliable, cost-effective energy.

Our 2023 solar construction summary.pdf highlights many of the projects that we’ve placed into service and the benefits these sites deliver to our customers.

Additional site-specific information can be found on the map or project links below.

Utility-scale solar projects

Albany Solar Project

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The Albany Solar Project is an estimated 50-megawatt (MW) solar project located in Green County, Wisconsin.

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Bear Creek Solar Project

Richland County Solar Project map thumbnail

The Bear Creek Solar Project is an estimated 50-megawatt (MW) solar project located in Richland County, Wisconsin.

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Beaver Dam Solar Project

Beaver Dam Solar Project Map

The Beaver Dam Solar Project is an estimated 50-megawatt (MW) solar project located in Dodge County, Wisconsin.

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Cassville Solar Project

Cassville Solar Project Map

The Cassville Solar Project is an estimated 50-megawatt (MW) solar project located in Grant County, Wisconsin.

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Crawfish River Solar Project

Crawfish River Solar Project map thumbnail

The Crawfish River Project is an estimated 75-megawatt (MW) solar project located in Jefferson County, Wisconsin.

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Grant County Solar Project

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The Grant County Project is an estimated 200-megawatt (MW) solar project located in
Grant County, Wisconsin.

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North Rock Solar Project

North Rock Solar Project map thumbnail

The North Rock Solar Project is an estimated 50-megawatt (MW) solar project located in Rock County, Wisconsin.

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Onion River Solar Project

Onion River Solar Project map thumbnail

The Onion River Solar Project is an estimated 150-megawatt (MW) solar project located in Sheboygan County, Wisconsin.

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Paddock Solar Project

Paddock Solar Project map thumbnail

The Paddock Solar Project is an estimated 65-megawatt (MW) solar project located in Rock County, Wisconsin.

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Springfield Solar Project

Springfield Solar Project map

The Springfield Solar Project is an estimated 100-megawatt (MW) solar project located in Dodge County, Wisconsin.

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Wautoma Solar Project

 Wautoma Solar Project Map

The Wautoma Solar Project is an estimated 99-megawatt (MW) solar project located in Waushara County, Wisconsin.

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Wood County Solar Project

Wood County Solar Project map thumbnail

The Wood County Solar Project is an estimated 150-megawatt (MW) solar project located in Wood County, Wisconsin.

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Additional solar projects in Wisconsin

Madison Solar

We’ve built several types of solar structures on the grounds of our Madison office to offset part of our building’s energy use and to highlight numerous solar technologies.

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Rock River Solar

This 2.3-megawatt solar facility is the first Wisconsin utility-scale solar installation located on a closed ash landfill site. It represents another step in modernizing our Town of Beloit energy campus.

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West Riverside Solar

We’ve built a 4-megawatt integrated solar facility to offset auxiliary power use at our natural gas-fired West Riverside Energy Center located near Beloit.

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