Northeast Wisconsin
Zone 4

Transmission system limitations in Zone 4

Ongoing analysis of Zone 4 has identified several voltage and overload limitations. The most severe limitations are expected to occur during both peak periods. 

Several area projects are related to the underlying condition and performance of assets in Zone 4. 

Electricity usage growing

Peak electric demand typically occurs during the summer months, although the northern portion of Zone 4 typically experiences nearly equal summer and winter peaks. Paper mills and foundries in and around the Green Bay and Appleton metropolitan areas are some of the largest electricity users in the zone. 

Electric load is forecasted to grow at approximately 0.3 percent annually through 2032. Also, locally generated electricity is declining in the area with smaller, coal‑fired generators most at risk. This includes generation owned by industries, municipalities and utilities. 

Transmission projects in Zone 4

The most notable planned, proposed and provisional network/asset renewal projects in Zone 4 are listed below along with their projected year of completion and the factors driving the need for the projects.

Zone 4 includes the counties of:
  • Brown , Wis.
  • Calumet , Wis.
  • Dodge (NE) , Wis.
  • Door , Wis.
  • Fond Du Lac (E) , Wis.
  • Kewaunee , Wis.
  • Manitowoc , Wis.
  • Marinette (S) , Wis.
  • Menominee (S) , Wis.
  • Menominee , Wis.
  • Oconto , Wis.
  • Outagamie , Wis.
  • Shawano (E) , Wis.
  • Sheboygan , Wis.
  • Winnebago (E) , Wis.

Zone 4 Planned Projects

Project DescriptionProject #In-service yearNeed driver
J1171 Butternut SS Network Upgrades and Interconnection Facilities 12023G-T interconnection
Pioneer–Crivitz 138-kV Line (E-83/B-2), Retire 69-kV and Reconfigure Load to 138-kV22023Condition and Performance, T-D interconnection
Howards Grove – Erdman 138kV, new line 32023Reliability
Edgewater SS - Lodestar SS 138 kV (X-48/Y-31), underground cable rebuild 42023Condition and Performance
J1101 Kewaunee SS Interconnection Facilities and Network Upgrades52023G-T interconnection
Danz Ave.
SW STA - University (WPS) 69-kV line (O-15), underground rebuild & OPGW
62023Condition and Performance
Finger Road SW STA–Wesmark- Rapids, 69-kV line (FIRY11/R-44), rebuild72024Condition and Performance
North Appleton SS - Transformer Replacement and Asset Renewal 82024Condition and Performance
Oak St - Hwy V 69-kV line (Z-26), rebuild92025Condition and Performance
West Marinette SS – Transformer and Breaker Asset Renewal 102025Condition and Performance
Wells St. DIC - new West Marinette-Wells St. 69kV line112024T-D interconnection

Zone 4 Proposed Projects

Project DescriptionProject #In-service yearNeed driver
Proposed Projects

Zone 4 Provisional Projects

Project DescriptionProject #In-service yearNeed driver
New Holstein Area Reliability Project 122026Reliability
East Krok Transformer Replacement 132026Reliability