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.

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News release: ATC to start work along Highway 41 in Oshkosh

Ellinwood-Sunset transmission line upgrade will improve electric reliability in Fox Valley

De Pere, Wis. – American Transmission Co. will soon begin work on the existing transmission line that runs alongside US Hwy. 41 between the Sunset Point Substation, located in the town of Oshkosh, and the Ellinwood Substation, located in the City of Oshkosh.

“The upgraded transmission line will improve electric reliability in the Fox Valley,” said David Hovde, ATC local relations. “We will do our best to keep disruptions to a minimum along Hwy. 41 as we complete the project.”

The work consists of replacing six structures with steel poles on concrete foundations, as well as adding another six new steel poles. In addition, we will also be adding a second circuit (i.e, a second set of wires) on the remaining structures on the existing line by replacing the steel “arms” to these structures. This will accommodate the second circuit that will be placed on the 3.8 mile line along Hwy. 41 and across a portion of Lake Butte des Morts. The steel poles need to be replaced to meet newly required height clearances. There will also be some construction activities inside the two substations.

There will be a few periodic lane closures and diversions along Koeller Street. to accommodate the construction vehicles and work taking place during the project. The appropriate traffic control procedures, warning and directional signage, and other safety measures will be in place to alert drivers about any lane closures.

This project should be complete, and the facilities placed in service by mid-December 2007.

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ATC is a Wisconsin-based company that moves energy along the regional electric grid in parts of Wisconsin, Michigan, Minnesota and Illinois, serving more than 5 million electric consumers. We are experts at what we do: planning, maintaining, operating and protecting the grid. As the electric industry moves toward renewable generation sources, we are transforming our system to continue delivering energy reliably and safely. We proudly support STEM education programs that empower youth with the skills needed to succeed in tomorrow’s energy workforce. For more information, visit and follow us on LinkedIn and X (Twitter).