Delmarva Power & Light on April 12 notified the Maryland Public Service Commission (PSC) of the company’s intent to place in service on April 19 the Church Substation to Oil City Substation portion of a project that involves a 138-kV overhead transmission line.
As noted in an August 2015 proposed order of the PSC’s chief public utility law judge listed on the PSC’s website, Delmarva Power in October 2014 submitted an application to the PSC for a certificate of public convenience and necessity requesting authorization to rebuild the existing 25.5-mile line on existing right of way (ROW), from the company’s Church substation in Queen Anne’s County, Md., to its Steele substation in Caroline County, Md.
As TransmissionHub reported, according to a Sept. 10, 2015, letter to all parties of record from the PSC, that proposed order was not appealed by any party, nor did the PSC modify or reverse the proposed order, or initiated further proceedings into the matter. As a result, the proposed order became a final order of the PSC.
According to the October 2014 application, the $29.6m project is designed to address aging infrastructure by replacing the transmission line, which was originally installed in 1955.
The entire project would be installed on existing ROW, in which there is a 138-kV line on H-frame structures, composed of two wood poles (Circuit 13701), the company said. The 25.5-mile Circuit 13701 will be rebuilt using single steel pole structures, the company said, noting that there is also a parallel double circuit 230-kV lattice tower line (Circuits 23001 and 23009) in the ROW for 25.35 miles. In addition, Delmarva Power said, Circuit 13701 taps into Choptank Electric Cooperative’s Oil City substation, and that tap is 470 feet long.
The company noted that the project’s preliminary design calls for 187 new steel pole structures within the existing 25.5 miles of ROW from the Church substation to the Steele substation, along with two new steel pole structures on the Oil City Tap between Circuit 13701 and Choptank’s Oil City substation.
Delmarva Power also said that the project is divided into three phases: Phase One involves all work to build the line from the Steele substation to the Oil City Tap; Phase Two involves all work to build the line on and around the Oil City Tap; and Phase Three involves all work to build the line from the Oil City Tap to the Church substation.
The company noted that the rebuilt line is scheduled to be in service by May 2017, with cleanup and site restoration being completed by August 2017.
Delmarva Power is an Exelon (NYSE:EXC) company.