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Electric Transmission Project

Glebe
  • Rebuilding and modernizing the Glebe Substation in Arlington County, which was built in the 1970s and is reaching its end of service life.
  • Converting an existing overhead electric transmission line to an underground line between the Glebe Substation and Potomac Yard Transition Station.
  • Decommissioning of the Potomac Yard Transition Station in the City of Alexandria and the existing overhead line from service.

Construction Updates

December 2022

  • City of Alexandria side - The construction team broke ground in the Potomac Yard Shopping Center to install  a sound wall around the launch pit. The launch pit is needed to install the new underground line using the micro tunnel method. The sound wall is 24-feet tall and designed to reduce construction noise from the launch pit.

In January 2023, construction crews began preparing the launch pit for micro tunneling activities. 

  • Arlington County side – Temporary boardwalk diversion construction is underway, and the anticipated completion is February 2023. 

Contact Us

Call us M - F, 8am - 5pm

(888) 291-0190
Current Construction Timeline

Construction-Related Impacts

Service Interruption

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

Traffic

There may be some traffic delays.

Neighborhood

Access to surrounding neighborhoods will be impacted.

Interactive Portal

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