Dooms-Lexington

The Dooms-Lexington Project will replace the 500 kilovolt (kV) transmission line that was put into service in 1966. The structures and equipment are approaching the end of their expected service life and require replacement to maintain reliability. Our studies show the line needs to be upgraded by 2016 to avoid violations of the mandatory reliability standards established by the North American Electric Reliability Corporation (NERC).

Updates

  • December 2016: The 230kV line is now energized, rehab work is underway.
  • January 2016: The 500kV line is re-energized and back in service.
  • May 16, 2013: The State Corporation Commission granted a certificate of public convenience and necessity authorizing the 500kV rebuild project. On March 25, 2014, the SCC approved a new 230kV line to be located on the same structures as the 500kV line.

Benefits

  • Address aging infrastructure that is nearing the end of its useful life
  • Reduce the risk of a major failure of the high voltage network
  • Maintain local and regional grid reliability
  • support local economic development opportunities
  • Increase the capacity of the 500 kV line by nearly 50%
  • Avoid violations of the mandatory NERC Reliability Standards

Within the existing right-of-way corridor, Dominion Energy is preparing to replace the lattice-style towers with new, galvanized steel towers that will be approximately 35’ taller. These new towers will support conductors (wires) with greater capacity, and, will include arms for a new 230kV line to be installed underneath with minimal additional impact.

Construction Updates

All foundations for this project have been completed. Structure crews are in place and building structures on the new foundations. The structures are being erected starting at the Lexington substation, moving northeast towards the Dooms substation, just north of Waynesboro.

Route Maps

Description

As part of the high voltage network, Dominion Energy maintains a 500kV transmission line that extends 39 miles from our Lexington Substation northeast to our Dooms Substation located just north of Waynesboro, VA.

Within the existing right-of-way corridor, Dominion Energy is replacing the original lattice-style towers with new, galvanized steel towers that will be taller. In several places, the existing corridor contains two sets of towers. This project will only replace the 500kV line and structures that extend between Lexington and Dooms. See structure drawings below for a typical cross section of the area near you.

The new towers will support new conductors that will increase the capacity of the line by nearly 50%. The new structures will also be designed to accommodate a new 230kV line with minimal additional disruption for our neighbors. The new structures will be located on the same center line and in close proximity to the current structure locations. Both lines will operate safely within the existing right-of-way corridor.

  • Structure Comparison – Diagram of the existing and proposed structures.

  • Photo Simulations – Existing structures in the right of way and simulations of the proposed structures:
    • Simulation 1 (Staunton Area):  View from Dutch Hollow Road, looking southwest across Newport Road.
    • Simulation 2 (Rockbridge Baths):  View from Maury River Road, looking southwest across the river.
    • Simulation 3 (North Waynesboro):  View from East Side Highway, looking west. 

    Photo simulations and diagrams provide representational views of proposed electric transmission facilities. These illustrations do not necessarily depict exact structure design or physical placement. All projects are subject to change and to final engineering.

  • Printable project fact sheet (revised Oct. 2013)