ATC: About $11.5m spent as of Sept. 30 on 138-kV project in Wisconsin

American Transmission Company (ATC) on Oct. 23 told the Public Service Commission of Wisconsin that the actual project costs as of Sept. 30 on the St. Martins-Edgewood-Mukwonago Rebuild Project were about $11.5m out of the approved approximately $24.7m total project costs.

As TransmissionHub reported, the commission in October 2015 approved the rebuild of the line in southeastern Wisconsin where the lattice structures are almost 90 years old and at the end of their useful life.

ATC’s request for a one-year extension to begin construction on rebuilding existing 138-kV electric transmission line and substation facilities between the existing St. Martins and Edgewood substations, and between the Edgewood and Mukwonago substations, was granted in 2016.   

According to a Nov. 15, 2016, filing by the state Division of Energy Regulation, the commission in October 2015 approved ATC’s application for authority to rebuild the existing 138-kV lines. Order Condition 15 in the final decision stated that “if ATC does not begin on-site physical construction within one year of the effective date of this certificate of authority and order, the certificate authorizing the approved project shall become void unless ATC: files a written request for an extension of time with the commission before the date on which the certificate becomes void, and is granted an extension by the commission.”

ATC in August 2016 filed a written request for extension to begin construction for the approved project, the division said, adding that the company’s stated reasons for its request were “resource constraints, primarily the availability of construction labor.”

ATC requested an extension of one year, until September 2018, in order to begin construction, the division said.

In its Oct. 23 quarterly progress report for the period July 1 through Sept. 30 filed with the commission, the company said that the project remains on schedule for completion in June 2019, and that all of the required permits have been obtained.

Vegetation management activities continued on the transmission line portion of the project, ATC said, adding that installation of foundations and poles began in August.

Equipment installation at the Mukwonago substation was completed, ATC noted.

About Corina Rivera-Linares 3272 Articles
Corina Rivera-Linares, chief editor for TransmissionHub, has covered the U.S. power industry for the past 16 years. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial. She has also covered such topics as health, politics, and education for weekly newspapers and national magazines. She can be reached at