The Oak Creek Power Plant site has been essential to supplying the energy needs of southeast Wisconsin for decades. While much has changed since the first units came online in the 1950s, one key fact remains: Generation at this site is critical to providing energy we all depend on.
The Public Service Commission of Wisconsin (PSCW) issued a Certificate of Public Convenience and Necessity granting We Energies approval to construct a 1,100-megawatt (MW) combustion turbine generating facility.
The five turbines for this 1,100 MW facility are General Electric (GE) 7FA.05 combustion turbine (CT) generators and will run on natural gas.
This modern, efficient generation will be able to power up in minutes — ensuring energy stays flowing when demand spikes or renewable power is not available. Construction has started, with the first engine arriving on-site in spring 2026 and phased in-service dates proposed for 2027 and 2028.
Artist rendering of CTs for illustrative purposes.
Construction updates
Construction activities are underway and will continue through 2028.
Feb. 26, 2026
Aerial photo of CT construction, shows where the five combustion turbine generators and support equipment will be installed. Daily coordination between work groups and on-site operations is required to maintain efficiency and accommodate multiple contractors working in close proximity.
American Transmission Co.’s 345-kilovolt (KV) substation is being expanded as part of this project. Underground foundations are completed. Above ground, the steel frame is being erected.
Left: Electrical duct banks (PVC bundles) and risers (vertical pieces) were installed. Approximately 36 miles of underground electrical conduits will support the project.
Right: Concrete was poured to encase and protect the duct banks. Red coating is applied on top to indicate electrical hazards below.
Exhaust stack foundation forming. The stacks function like high-tech chimneys.
Process piping installation. These piping systems support various functions by transporting fluids and gases for combustion, cooling and lubrication. Examples include fuel gas (natural gas), hydrogen, compressed air and cooling water. Over 55,000 feet of underground piping will be installed to support the project.
A sheet pile retaining wall was installed at the northwest corner of the construction site to achieve site elevation while maintaining existing Oak Creek Generating Site facilities.
A new detention pond will manage storm water runoff and protect water quality by capturing rain and allowing sediments to settle before the water is slowly released.
Unit 11 generator pedestal forming and anchor bolt placement in preparation for concrete. The generator will be placed on this foundation. The anchor bolts need to be precisely aligned before concrete is poured to ensure the generator will fit properly upon delivery.
