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Overview & Program Description

The Dooms-Valley 500kV line was originally built in the early 1960s using COR-TEN steel, which, among other things, gave the steel a rust color. The idea behind using COR-TEN was that it would “seal” the steel with a form of rust patina that would prevent further natural rusting and corrosion. However, the patina layer has not performed as expected and is actually aiding in degrading the steel and reducing the durability of the lattice structures as a whole. Although well maintained, it has come time to address these concerns.

Existing Transmission Corridor Conditions

  • Project area is ~18 miles long
  • Right of way width is primarily 150 feet wide
  • Average structure height = 111 feet

SCC Applications

The State Corporation Commission (SCC) is responsible for verifying the need, determining the route and reviewing the environmental impact of certain transmission lines in Virginia. On September 22, 2017, Dominion Energy submitted its application regarding the Dooms-Valley Project and on September 10, 2018, the SCC approved the project.

Documents related to the case are available to the public on the SCC Docket Search section of the SCC website, in the "Search Cases" section – Case Number PUR-2017-00114. In addition, interested parties may comment directly to the SCC by sending an email to

To learn more about this process, view our SCC process map.

Application Documents

Procedural Schedule

The following are the key dates and developments related to the SCC review timeline. For the most up-to-date and full listing of motions, rulings and other related documents, please refer to the SCC docket for this case.

  • Sept. 10, 2018 - SCC issues final order approving project
  • April 12, 2018 - SCC Public Evidentiary Hearing, State Commissions’ Courtroom, Second Floor, Tyler Building, 1300 Main Street, Richmond, VA @10 a.m.
  • April 5, 2018 - Public Comment period ends
  • March 27, 2018 - Company Rebuttal Testimony due
  • March 13, 2018 - Staff Report due
  • Feb. 22, 2018 - Local Public Hearings, Augusta County Government Center, 4:30 p.m. and 7:00 p.m.
  • Feb. 20, 2018 - Respondent Testimony due
  • Jan. 16, 2018 - Notices of Participation period ends
  • Nov. 17, 2017 - The SCC issued an Order for Notice and Public Hearing which sets the procedural schedule for this case
After more than five decades of operation, the COR-TEN® lattice structures and associated components along the nearly 18-mile line from our Dooms substation to our Valley substation in Augusta County need to be replaced in order to maintain reliability for our customers and add future operational flexibility into the system.


  • May 2020 – All new structures and foundations are now installed. Crews are in the process of pulling in the new conductor wire.
  • March 2020 – Crews are removing wire from old structures and installing new structures
  • February 2020 – Foundations and structures are being installed
  • December 2019 – Existing structure removal and new structure installation have begun in some areas of the project. Access roads and foundations continue to be installed


Our suggested approach is to rebuild this line in a manner that:

  • Upgrades it to current standards
  • Provides future system flexibility for the long term by adding the option to add another transmission line on the same structure
  • Maximizing the use of existing rights of way
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