Virginia Electric and Power d/b/a Dominion Virginia Power continues to work on its transmission projects in Virginia, including energizing two projects and completing part of another.
Loudoun to New Road
Dominion Virginia Power energized in May its $30m Loudoun to New Road transmission project, a spokesperson told TransmissionHub on June 11.
The project’s route is about four miles and extends from the company’s existing Loudoun substation westward through Loudoun County and a small portion of Prince William County, to a new substation, the New Road Substation, in Loudoun County. The line follows Loudoun County’s southern border.
According to a December 2009 application that the company filed with the Virginia State Corporation Commission (SCC), in order to comply with mandatory NERC reliability standards by relieving excessive demand on its existing 115-kV Loudoun-Middleburg radial transmission Line #49, and to address projected future thermal overloading of that line and facilitate orderly development of its transmission system in the region, Dominion Virginia Power proposed to replace a portion of the existing Line #49 with the construction of two, 230-kV overhead transmission lines, to be designated Line #2117 and Line #2123, on double circuit, single-shaft weathering steel poles to run about 3.85 miles in the existing cleared 100-foot right-of-way currently occupied by Line #49 from the company’s existing Loudoun substation westward through Loudoun County and a small portion of Prince William County, to the new New Road substation, in Loudoun County; and to build the New Road substation next to the existing Line #49 right-of-way.
The areas traversed by the line include predominantly rural, rural-residential, planned residential, farmland and wooded land, the company added.
Landstown-Virginia Beach Line Upgrade
The spokesperson also noted that the company’s Landstown-Virginia Beach Line Upgrade project in Virginia Beach went into operation in December 2012.
According to TransmissionHub data, the 230-kV line was built within the existing right-of-way corridor that extends about 11 miles from the Virginia Beach substation off of Laskin Road to the Landstown substation off Princess Anne Road.
Dominion replaced the existing lattice-style towers with H-frame structures and wires with greater capacity. The new structures are about the same height as the original structures.
On cost, the spokesperson referred to a report by SCC staff that noted that the project costs about $36.9m (2009 dollars) of which about $29.7m is for transmission rebuild work and about $7.2m is for substation work.
Arlington to Radnor Heights to Ballston
Another project on which work continues is the Arlington to Radnor Heights to Ballston project in Arlington County, which, according to TransmissionHub data, is a 230-kV underground transmission project that involves 2.6 miles of underground transmission lines from an existing substation near I-395 and Jefferson Davis Highway to the new Radnor Heights substation on Joint Base Myer-Henderson Hall and 1.1 miles of underground transmission lines on public roadways from the Radnor Heights substation to the existing Ballston substation on Wilson Blvd.
The new infrastructure project is needed to ensure that the company can continue to provide reliable electric service to its customers in Arlington County, consistent with mandatory NERC reliability standards and the company’s planning criteria.
The Jefferson Davis Highway to Radnor Heights segment has been energized and the remainder of the approximately $80m project is scheduled to be in service before the end of the year, the spokesperson said.
Dominion Virginia Power is a subsidiary of Dominion Resources (NYSE:D).