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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ATC receives approval to rebuild transmission line in Rock, Walworth counties

Aging 69,000-volt line needs upgrading

PEWAUKEE, Wis. – American Transmission Co. on Tuesday gained approval from the Public Service Commission of Wisconsin to rebuild a 20-mile, 69,000-volt transmission line in Rock and Walworth counties. The Colley Road-Brick Church Rebuild Project will run from the Colley Road Substation in Beloit to the Brick Church Substation in Walworth. The project also involves construction of the new Tiger Substation near Clinton.

“Much of the line is more than 60 years old and needs improvements to ensure electric reliability in the area,” said Jon Callaway, ATC senior local relations representative.

The project will involve stringing new wires and replacing aging wood transmission poles with new steel poles. The new substation will be constructed on approximately 10 acres of land owned by ATC near Clinton.

Construction is planned to begin during the second half of 2015 to meet an in-service date of spring 2018. The estimated cost of the project is $38.5 million.

Note to editors: Additional information including a map is available at and on the PSC’s website ( under docket number 137-CE-171.

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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).