Several solar projects have been proposed, approved, or completed in central Wisconsin. The arrays cover hundreds of acres of former farm, prairie, and forest land with hundreds of thousands of roughly 17-square-foot modular photovoltaic panels with the capacity to produce electricity for tens of thousands of homes.
Here is a summary of the current status of these projects:
Vista Sands Solar Farm
Developer: Doral Renewables
Location: town of Plover, town of Grant, and village of Plover in Portage County
Project area: 9,500 acres
Generation capacity: 1.2 gigawatts, equal to the demand of 200,000 average Wisconsin homes
Construction start date: second quarter 2026
Date of activation: by the end of 2028
Annual payment in lieu of property taxes to local governments: $6.5 million total − town of Plover: $758,767, town of Grant: $1,955,633, town of Buena Vista: $140,400 and Portage County: $3,712,800
When completed, the Vista Sands Solar Farm project will be the largest solar array project in Wisconsin and among the largest in the country. Solar farm development is anticipated to take 56 high capacity wells out of normal operation and will greatly reduce the estimated 3 million pounds of fertilizer and 73,000 gallons of insecticide currently spread across the project area every year.
Saratoga Solar
Developer: Invenergy
Contracted purchaser: We Energies
Location: town of Saratoga in Wood County
Project area: 825 acres
Generation capacity: 150.5 megawatts, or 28,000 Wisconsin homes
Construction start date: spring 2026
Date of activation: spring 2028
Annual payment to local governments: $602,000 total − town of Saratoga: $250,833 and Wood County: $351,167
The Saratoga Solar project is a mirrored version of a project completed in 2022 on an adjacent property. Work to prepare the project site is underway, including pouring foundations and working with local officials on an emergency response plan, with construction set to begin in spring 2026, according to an Invenergy spokesperson.
Invenergy has completed 12 energy projects across eight counties in Wisconsin with an inventory of generation units including natural gas, energy storage, solar and wind, according to an Invenergy spokesperson. These projects contribute more than $20.8 million annually in local revenue and land costs across the state.
Wood County Solar
Developer: Alliant Energy
Location: Town of Saratoga
Project area: 1,200 acres
Generation capacity: 150 megawatts, or 40,000 homes
Construction start date: July 2021
Date of activation: late summer 2022
Annual payment to local governments: $600,000 total − town of Saratoga: $250,000 and Wood County: $350,000
Wood County Solar was the first of the two utility-scale solar projects in the town of Saratoga for which former Kansas-based developer Savion received initial approvals from the Public Service Commission before Alliant and Invenergy acquired each project.
Portage Solar
Developer: Geronimo Power (formerly National Grid Renewables)
Contracted purchaser: Microsoft
Location: towns of Grant and Plover in Portage County
Project area: 2,167 acres
Generation capacity: 250 megawatts
Construction start date: April 14, 2025
Date of activation: late 2026
Annual payment to local governments: $1 million total − town of Grant: $75,000, town of Plover: $341,667 and Portage County: $583,332
The Portage Solar project received its initial approval in April 2023. The company has announced a power purchase agreement with Microsoft. The company also days about $1.25 million to be committed over the first 20 years of the project’s life to a “community charity fund,” which will support local nonprofit groups and community initiatives.
Wautoma Solar Project
Developer: Alliant Energy
Location: city of Wautoma and town of Dakota in Waushara County
Project area: 624 acres
Generation capacity: 99 megawatts, or 26,000 homes
Construction start date: July 2022
Date of activation: December 2023
Annual payment to local governments: about $400,000 split between town of Dakota, city of Wautoma and Waushara County
The Wautoma Solar project was completed by Alliant Energy in December 2023 as a part of the company’s “Clean Energy Blueprint.” The initiative led to construction of 12 utility-scale solar projects built by the utility company in recent years including the first array in the town of Saratoga in Wood County.