Wheaton Repowering Project

​​​​​​​​​​​​​​​​​​​​​​​​​​​​< Highlighted Cases
Image of Wisconsin map and highlighted county

Town of Wheaton, Chippewa County, Wisconsin

Docket ID: 4220-CE-185

Application of Northern States Po​​wer Company-Wisconsin for a Certificate of Public Convenience and Necessity to Repower the Wheaton Generating Station in Chippewa County, Wisconsin.​​

View and Download Proj​ect ​Map

Jump to Section:


Interactive Map

Use the interactive map to explore the ​project.

Tips for using the map

  • Enter a location or address in Find address or place to zoom into specific location.
  • Click the information button () under the search bar to view additional guidance and tips for using this mapping application.​

View Map i​n Ne​w Window

Application Summary

Overview: Northern States Power Company-Wisconsin (NSPW) is proposing construction of a new electric generation facility with a total nameplate capacity of 255 MW. Major components of the project include one F-class Combustion Turbine (CT) generator (210 MW) and five Reciprocating Internal Combustion Engine (RICE)​ units (9 MW each), which would all be capable of operating with natural gas or No. 2 fuel oil. The facilities would also include accessory structures for water preparation and storage, fuel storage and handling, electrical interconnection, and other support functions. The CT and RICE units would be interconnected to the existing onsite interconnection point currently utilized by Wheaton Units 1-4 and 6, which would be retired in conjunction with the proposed project. Water for nitrogen oxide control and closed cooling would be provided by the existing plant well water supply system. NSPW has provided a proposed site layout and an alternative site layout for the Commission’s consideration.

Applicant stated need: The proposed project is needed to provide needed capacity, stability support, and transmission system reliability, particularly at times of peak energy demand, as NSPW and Northern States Power – Minnesota (NSP-M, and collectively the NSP Companies) retire their coal fleet and other dispatchable generation assets in the Upper Midwest are scheduled to retire or reach the end of their contract lives.​

Estimated cost: The construction cost of the proposed project is currently estimated at $244 million ($914/kilowatt [kW] based on average total capacity of 267 MW) without Allowance for Funds Used During Construction (AFUDC). Capital expenditures with AFUDC is estimated to be $263 million.

Project Location: The proposed project would be located on approximately six acres of property currently owned by NSPW in the Town of Wheaton, in Chippewa County.

Proposed schedule: 

  • The application was submitted to the Commission in January of 2023. 
  • If approved, the anticipated construction schedule for this project would begin in the Fall of 2023. The project is proposed to be completed and in service by September of 2025.
Statutory Review

This electric generation facility is a Type II​ action under Wis. Admin. Code § PSC 4.10(2)​. ​The Commission will prepare an Environmental Assessment (EA) for this project that will evaluate the location of the project and its potential environmental, community, and private property impacts. There will be a preliminary determination when the EA is complete that will determine whether the preparation of an Environmental Impact Statement is necessary. Comments on this preliminary determination will be accepted and considered before a final determination is made. At the time of the preliminary determination, the Commission shall make copies of the EA available to those persons that request it.

Key Application Documents

Case Contacts and Additional Information

Access Docket 4220-CE-185 in the PSC Case Management System to view additional information.

Utilize the Staff Involved tab for contact details for PSC staff assigned to the docket, including the case coordinator and the environmental review coordinator.

Click the Documents tab for a complete list of docket documents categorized by document type.​

Access Docket 4220-CE-185

Opportunities for Public Participation

The Commission offers several opportunities for public participation in its proceedings. For construction projects, these opportunities may include providing input regarding the scope of environmental impact documents, attending public hearings sessions, and signing up for emails for updates related to a particular case.

​​< Highlighted Cases