American Transmission Co. projects

Project website for a Wisconsin-based company that owns and operates the high-voltage electric transmission system that powers communities in portions of the Upper Midwest.

Howards Grove-Erdman Project

Project overview

American Transmission Co. plans to construct a new 6.6-mile 138,000 volt high-voltage transmission line to ensure electric reliability in Sheboygan County and the surrounding area. The electric modifications for the project include:

  • Constructing a new 6.6-mile single circuit 138-kV line from the Howards Grove Substation near the village of Howards Grove to the Erdman Substation in the city of Sheboygan.
  • Expanding the Howards Grove Substation to a 4-position ring bus to improve reliability performance and operational flexibility.
  • Substation modifications at the Erdman Substation to accommodate the new line.

Need for the project

The need for the new transmission line is driven by nearby energy demand, system limitations related to maintenance and outage conditions, and changes in energy generation. The estimated cost for this project is $25 million.

Schedule
Submit application to PSCJuly 2021
Anticipated PSC project approvalEarly 2022
Construction beginsSummer 2022
Project in serviceWinter 2023

Is a new line necessary?

Yes.  Nearby energy demand, system limitations related to maintenance and other outage conditions, and changes in energy generation are driving the need for a new 6.6-mile 138,000 volt high-voltage transmission line to ensure electric reliability in Sheboygan County and the surrounding area.

Who decides if a project is needed and what route is chosen?

ATC will propose two routes to the Wisconsin Public Service Commission that address electric system needs. While ATC provides the PSC with recommendations for two potential routes, the PSC ultimately determines the transmission line route location.

How did ATC select the two routes it is proposing?

ATC evaluates routes that balance community needs with environmental impacts, constructability, current and future land use, project cost and specific electric system needs. When proposing new power lines, Wisconsin law requires co-location with existing utility facilities and infrastructure – like highways, where it is feasible.

How do I provide input into the project?

Once ATC submits an application to the Public Service Commission, you can submit electronic or written comments to the PSC under docket number 137-CE-195.

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