ATC: St. Martins-Edgewood-Mukwonago 138-kV line on schedule for completion in June 2019

American Transmission Company (ATC) on April 24 provided an update to the Public Service Commission of Wisconsin on the company’s St. Martins-Edgewood-Mukwonago Rebuild Project, saying that the project remains on schedule for completion in June 2019.

Construction began last December when right of way (ROW) clearing began, the company said, noting that detailed design for the Mukwonago and Edgewood substations continued.

The U.S. Army Corps of Engineers permit was received on Feb. 15, while the Wisconsin Department of Natural Resources (WDNR) “NR 216 Construction Site Storm Water Discharge Permit” was received on March 19, the company said.

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 April 24 filing, ATC noted that the “actual project costs as of March 31” were about $3.6m out of the approved approximately $24.7m.

About Corina Rivera-Linares 3286 Articles
Corina Rivera-Linares was TransmissionHub’s chief editor until August 2021, as well as part of the team that established TransmissionHub in 2011. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial from 2005 to 2011. She has also covered such topics as health, politics, and education for weekly newspapers and national magazines.