Cardinal-Hickory Creek Transmission Line Project

As of January 12, 2023, there are 115 renewable generation projects dependent upon the construction and operation of Cardinal-Hickory Creek. Click on the image above to view the interactive map.

American Transmission Co., ITC Midwest LLC and Dairyland Power Cooperative have plans for a high-voltage transmission line connecting northeast Iowa and western Wisconsin that would provide economic savings, support renewable energy policy and improve electric system reliability.

A project area from Dubuque County, Iowa, to Dane County, Wisconsin, has been identified for the approximately 102-mile, 345-kilovolt line. Studies indicate that the Cardinal-Hickory Creek Project is a multi-benefit project that would deliver benefits to local communities and the Midwest region by:

• Improving electric system reliability locally and regionally
• Delivering economic benefits for utilities and electric consumers
• Expanding infrastructure to support public policy for greater use of renewables

Project summary

Areas benefited: Iowa, Wisconsin and the Midwest

Length of line: Approximately 102 miles

Voltage: 345,000 volts

End points: The western end point of the line will be in Dubuque County, Iowa. The eastern end point of the line will be the Cardinal Substation in the Town of Middleton, Wisconsin. The project also will include construction of a new mid-point substation near Montfort, Wis.