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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New transmission line placed in service in Door County

Canal-Dunn Road project boosts area reliability

DE PERE, Wis. – A new 7.7-mile transmission line between the Canal Substation in Sturgeon Bay, Wis., and the Dunn Road Substation in the Town of Sevastopol has been placed in service ahead of schedule and under budget.

“This transmission line resolves a number of issues in the peninsula,” said David Hovde, ATC local relations consultant. “The system was frequently overloaded, causing low voltages that put reliable service to customers in jeopardy. While some short-term solutions had been applied previously, the new line resolves those problems for the longer term.”

The project, which was approved by the Public Service Commission of Wisconsin in August 2010, came in about $1 million under budget and was placed in service nearly three months ahead of schedule. Final cost of the project is estimated to be $15.8 million.

ATC’s 10-Year Transmission System Assessment calls for an extension of the line from Dunn Road to Egg Harbor as a provisional project for the future. Provisional, or placeholder, projects are those for which studies are not yet complete and may not necessarily represent a preferred alternative.

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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).