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Major 345-kV transmission line in Wisconsin completed, energized


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Major 345-kV transmission line in Wisconsin completed, energized

The 180-mile, 345-kV Badger-Coulee transmission line, which connects the Dane County and La Crosse County areas of Wisconsin, has been placed into service.

Project owners and developers American Transmission Co. LLC and Xcel Energy Inc. subsidiary Northern States Power Co. - Wisconsin filed for the approval of the transmission line in October 2013.

In April 2015, the Public Service Commission of Wisconsin issued a final order granting a certificate of public convenience and necessity to the $580 million line. The town of Holland, Wis., opposed the project and challenged the commission's approval to the La Crosse County Circuit Court.

In May 2018, the District IV Court of Appeals affirmed a lower court's findings that the commission properly determined that construction of the Badger-Coulee transmission line is necessary and that the environmental review of the project was sufficient.

The Badger-Coulee transmission line is one of 17 multivalue projects designated by the Midcontinent ISO, which are expected to produce $12.1 billion to $52.6 billion in net economic benefits over the next 20 to 40 years and enable the delivery of 41 million MWh per year of wind generation. The Badger-Coulee line is a portion of MISO's MVP number 5. The other portion, the Cardinal-Hickory Creek line, is under development.

Construction of the Badger-Coulee project started in 2016 and a 20-mile segment in Dane County was energized in 2017. Dairyland Power Cooperative, Southern Minnesota Municipal Power Agency and WPPI Energy also own the portion of the project between the Briggs Road and North Madison substations.