Alliant Energy completes 200MW Wisconsin PV plant

June 3, 2024
Facebook
Twitter
LinkedIn
Reddit
Email
The Grant County project, located in Potosi, Wisconsin, marks the culmination of Alliant Energy’s addition of 1,089MW of solar PV in Wisconsin. Image: Alliant Energy.

US utility Alliant Energy has completed construction of a 200MW solar PV plant in the state of Wisconsin.

The Grant County project, located in Potosi, Wisconsin, marks the culmination of Alliant’s addition of 1,089MW of solar PV in Wisconsin across 12 projects. In 2019, the publicly-owned utility announced a commitment to bring 1GW of PV online in the state through its ‘Powering What’s Next’ initiative.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The site has deployed more than 430,000 solar modules across 1,400 acres, Alliant said, and features biodiversity measures to create a hospitable habitat for pollinators. Construction was contracted to a subsidiary of NextEra Energy Resources, the utility added.

Lisa Barton, president and CEO of Alliant, said: “The successful completion of the Grant County Solar Project is a milestone achievement on our journey toward a cleaner, more reliable and cost-effective energy future. Investing in a diverse energy mix is just one way we add value for customers while sustaining the economic and environmental health of the communities we serve.”

Beyond the solar element of the Grant County site, Alliant said that it plans to add a 100MW battery energy storage system (BESS) project to the same site. The Public Service Commission Wisconsin (PSCW) granted approvals for this project, and a second BESS expansion at the Wood County Solar Project, in August 2023.

In total, the company plans to develop 275MW of BESS projects to complement its growing solar portfolio. In March, US engineering, procurement and construction (EPC) firm Burns & McDonnell completed EPC work on 764MW of solar PV projects in Wisconsin for Alliant.

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2027 and beyond.

Read Next

November 28, 2025
The European Patent Office (EPO) has revoked a patent for a key solar cell manufacturing process, which has been hailed as “good news” for European solar PV manufacturing.
November 28, 2025
Chinese module manufacturer Huasun Energy has launched a new heterojunction module with a 760 W output, a 2,000 V system voltage and 24.5% module efficiency.
Premium
November 27, 2025
Prateek Tare tells PV Tech Premium how Distributed Energy Infrastructure transformed a Superfund site into the Acton PV-plus-storage project.
November 27, 2025
The World Bank will invest in a huge 4GW, 5.12GWh solar-plus-storage complex in Malaysia, which will form part of a pan-Southeast Asian power grid initiative.
November 27, 2025
RWE Clean Energy has commissioned the 200MW Stoneridge Solar PV project in Texas, which is co-located with a 100MW/200MWh BESS.
November 27, 2025
A group of California legislators has called on the state Public Utilities Commission to hold two utilities accountable for delays in connecting solar PV and energy storage capacity to the grid.

Upcoming Events

Solar Media Events
December 2, 2025
Málaga, Spain
Upcoming Webinars
December 4, 2025
2pm GMT / 3pm CET
Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy