American Transmission Company (ATC), in its April 23 quarterly progress report for the period Jan. 1 through March 31 regarding its Riverside Project, told the Public Service Commission of Wisconsin that it will begin construction at the Kittyhawk substation in late April.
As TransmissionHub reported, the commission, in a Jan. 12 final decision, approved ATC’s June 2017 application for a certificate of public convenience and necessity (CPCN) regarding new 345-kV electric transmission facilities.
As noted in that decision, the West Riverside interconnection project includes 345-kV electric transmission facilities required to connect the West Riverside Electric Generation facility (West Riverside) to ATC’s existing electric transmission system. The commission noted that it has previously approved the construction by Wisconsin Power and Light (WP&L) of West Riverside in a separate docket.
Describing the transmission project and its purpose, the commission noted that ATC proposes to build a new loop-in, loop-out 345-kV transmission line from its Line W10. The project includes construction of a new 345-kV substation to be named Kittyhawk; a new loop-in, loop-out 345-kV, double-circuit line that will tap into existing ATC Line W10; an upgrade to the protective relay packages at the existing Paddock and Rockdale substations; and an upgrade to the protective relay settings at the existing Rock River and Townline Road substations.
The line would be built using weathering steel monopole structures with davit arms or a delta configuration, depending on the route segments selected, the commission said.
In its April 23 filing, ATC said that construction on the transmission line will begin in July, and remote end construction will begin in March 2019.
Discussing environmental updates, ATC said that the Wisconsin Department of Natural Resources (WDNR) on Feb. 7 finalized the certified endangered resource review for the project.
The company also noted that the WDNR on Feb. 9 issued coverage under the Utility General Permit WDNR-GP3-2013 for placement of temporary wetland fill and placement of temporary clear span bridges.
The WDNR on April 12 issued coverage under the Wisconsin Pollutant Discharge Elimination System (WPDES) General Permit No. WI-S067831-05: Construction Site Storm Water Runoff, the company said.
ATC said that the project’s anticipated in-service date is April 19, 2019.
Gross project expenditures as of March 31, were about $7.4m, or 17.5%, of the authorized total of about $42.1m, the company said.