This project will rebuild an existing 230 kilovolt line from Suffolk, Virginia, south to Winfall, North Carolina. The 34 mile long project will replace aging infrastructure on a transmission line that has been in operation for more than 50 years. The structures and wire need to be replaced to ensure the continued integrity of the electrical grid.

In Virginia, this project is 11 miles long. Dominion Energy will replace wooden H frame structures with weathered steel H frame structures.

In North Carolina, this project is 24 miles long. For this portion of the project we will also replace wooden H frame structures with weathered steel H frame structures.

Along this 35 mile project route, new structures will closely resemble existing structures and stand 67 feet tall on average.

Open House

June 6, 2019 from 5 p.m. – 7 p.m.
Eureka Baptist Church 

1601 NC Highway 32 North
Corapeake, VA 27926 

Project Goals

  • Provide long-term reliability and durability without excessive maintenance
  • Deliver operational system flexibility to meet future needs
  • Comply with mandatory standards to ensure safety and reliability
  • Minimized impacts to the local area and environment


For this project, we will replace aging infrastructure with new electrical equipment in an existing right of way. This equipment will ensure the continued integrity of the electrical grid.

Along this 35 mile long project we will install weathered steel H frame structures from the Suffolk substation to the Winfall substation located in Winfall, North Carolina.

Suffolk Swamp Winfall fact sheet


View a map of the proposed project.

Photo Simulations

View existing and proposed conditions.

SCC Approval Process

May 2019 -  SCC application

The Virginia State Corporation Commission (SCC) has regulatory authority over all energy providers in Virginia and requires certification for all transmission lines out of the ordinary course of doing business or are at or above 138 kV. Among other responsibilities, the SCC validates the need for a proposed line and approves the route and structures. In reviewing a proposed project, the SCC must consider whether potential impacts on scenic assets, historic districts and the environment have been reasonably minimized.

To learn more about this process, please view our SCC application review process.

Procedural Schedule

The following key dates and developments are 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.