Delmarva Power began phase one construction in February on its new 230/34-kV Crest substation in Cecil County, Md., a company spokesperson told TransmissionHub on April 15.
According to a project fact sheet, the substation is being built because capacity at two other substations – the existing Cecil and Colora substations in Cecil County – is projected to be exceeded by 2018. The Crest substation is estimated to cost $27.8m, and is expected to be in service on May 31, 2018, the company added.
The new substation is about five miles north of North East, Md., and will be supplied from the existing 230-kV aerial transmission line between the Cecil and Colora substations. The company added that as part of the project, crews will need to build two new steel poles on existing rights of way (ROWs) to cut the existing Cecil–Colora 230-kV line into and out of the new substation.
Delmarva Power said that the Crest substation, which will serve about 5,618 customers, will improve resiliency of the electric grid and allow the company to continue its commitment to improving customer reliability. The substation will also create a smarter grid to automate certain functions on the electric system, restore power more efficiently and provide more detailed energy information to help customers control their energy use, the company said.
Additionally, the Crest substation will decrease capacity demands on the Cecil and Colora substations currently serving customers in the surrounding area, the company said.
The company noted that there is no new land or property that needs to be acquired for the project, and all work will occur on Delmarva Power property or in the current transmission ROW corridor.
Among other things, the company said that over the last five years, it has invested about $1bn to strengthen its transmission and distribution systems to improve electric reliability and it plans to equal that system investment pace over the next five years. Improvements include building new power lines, substations and other electrical infrastructure, the company said.
Delmarva Power is an Exelon (NYSE:EXC) company.