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Power line structures by Tunis Substation in North Carolina

Project Overview

We are planning to rebuild two aging electric transmission lines in northeast North Carolina in Hertford and Gates counties. One line continues to the City of Suffolk, Virginia. After more than five decades of dependable service, the existing structures and components on both lines are at the end of their service life. Replacing this equipment will maintain reliability for our customers.

The 44.3-mile, 230 kilovolt (kV) electric transmission line between our Suffolk and Earleys substations was built on wooden H-frame and weathering steel lattice structures. We are proposing to rebuild this line using a combination of brown, weathering steel H-frame structures and galvanized steel lattice structures. The 14.8-mile, 115 kV electric transmission line between our Tunis and Earleys substations was built on wooden monopole structures. We are proposing to rebuild this line using weathering steel monopole structures. No new right of way is needed.

Timeline (View Full Timeline)

  • Spring 2023 – Project announced; public engagement begins
  • September 12 and 13, 2023 – Project Open Houses
  • November 2023 – File project with the Virginia State Corporation Commission (SCC) for a Certificate of Public Convenience and Necessity (CPCN)
  • Fall 2024 – Anticipated SCC Final Order
  • Early 2025 – Right of way encroachment review
  • January 2026 – Begin forestry activities
  • March 2026 – Prepare construction access
  • Spring 2026–Summer 2028 – Construction activities
    • Phase 1 (Spring 2026–Fall 2027) – 230 kV rebuild between Suffolk and Tunis substations
    • Phase 2 (Fall 2027–Summer 2028) – 230 kV and 115 kV rebuild between Tunis and Earleys substations
  • Late Summer 2028 – Expected rebuild completion
  • Fall 2028–Spring 2029 – Right of way restoration activities

Benefits

  • Maintains current right of way
  • New structures located in the same general location as existing structures
  • Complies with mandatory standards to ensure safety, reliability and to meet future needs
  • Minimizes impact to the community and environment
  • Replaces aging infrastructure

Contact Us

Call us M - F, 8am - 5pm

(888) 291-0190

Email us at

powerline@dominionenergy.com

Documents

Explore the project using this interactive map.

Impacts

Service Interruption

Your electric service is not expected to be impacted by this project.

Traffic

This project is not expected to impact traffic.

Noise

Noise levels will be moderate; permits are in place.

Neighborhood

Access to surrounding neighborhoods will not be impacted.

Photos

Weathering steel lattice towers north of the Chowan River, looking south. The line here shares structures with a distribution line to cross the wetlands and river.
Existing weathering steel lattice towers north of the Chowan River, looking south. The 230 kV electric transmission line here shares structures with a distribution line to cross the wetlands and the river. Photo taken in March 2023.
Transmission lines by Tunis Substation in North Carolina
By Tunis Substation in North Carolina. Existing transmission 230 kV H-frame and 115 kV monopole structures pictured summer 2022.
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