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.

Media Line: (877) 506-6117info(at)

News release: Power line boosts reliability in Columbia County

Columbia-Rio transmission line completed under budget and ahead of schedule

MADISON, Wis. – American Transmission Co. placed in service last week a new 69-kilovolt electric transmission line connecting the Columbia Substation, located in the Town of Pacific, with the Rio Substation, located in the Village of Rio. The new line will also connect to a new Alliant Energy substation – the Wyocena Substation, in the Village of Wyocena..

Construction began last spring on the transmission line, which runs from the Columbia Substation along State Hwy. 16 into the Wyocena Substation. Construction was completed last month, ahead of schedule.

The 10-mile transmission line helps meet local electricity needs and backs up other critical facilities on the electric system. “This new transmission line will help accommodate the increase in electricity usage due to population growth,” said John Garvin, ATC local relations representative. “Completion of this line gives us a solution to past network challenges.”

# # #

American Transmission Co. is a Wisconsin-based company that owns and operates the electric transmission system in portions of the Upper Midwest. Formed in 2001 as the nation’s first multi-state transmission-only utility, ATC has invested to improve the adequacy and reliability of its infrastructure. ATC now has $5 billion in assets, including more than 9,890 miles of transmission lines and 568 substations. The company is a member of the MISO regional transmission organization, and provides nondiscriminatory service to all customers, supporting effective competition in energy markets without favoring any market participant. For more information, visit our website at

Follow us on:
Twitter | LinkedIn | Blog | YouTube