Possum Point – Smoketown Electric Transmission Improvement Project

We are committed to continually reviewing and analyzing our energy infrastructure to provide the most safe and reliable electric service to our neighbors. It has become necessary for us to address two existing transmission lines that have been in operation for nearly 70 years.

Project Update

Interstate 95 Traffic Impacts in Dumfries, Virginia

What? Traffic impacts due to wire-pulling across I-95

Where? Northbound and southbound lanes at mile-marker 154 (between exits 152A and 156)

When? Saturdays and Sundays, sunrise to 10 a.m., Sept. 29-30; Oct. 13-14, 27-28; Nov. 3-4

Why? Maintain public safety while working to bring reliable electricity to the area

How? Pace cars slow all traffic lanes for a period of 10-15 minutes while crews work across the highway. Express lanes in the area close from 5:30-10:00 a.m.

Contingency Dates: Nov. 17-18

Project Update

Route 1 Traffic Impacts in Dumfries, Virginia

What? Traffic impacts due to wire-pulling across Route 1

Where? Northbound and southbound lanes between River Ridge Boulevard and Chesapeake Drive

When? Tuesdays, Wednesdays, Thursdays, 9:30 a.m. to 1 p.m., Oct. 23-25, Oct. 30-Nov. 1, Nov. 7

Why? Maintain public safety while working to bring reliable electricity to the area

How? Flaggers stop traffic for a period of 10-15 minutes while crews work across the highway.

Contingency Dates: Nov. 8, 13 and 14

Overview

Dominion Energy has an existing electric transmission corridor that runs from its Possum Point facility in Prince William County up through Dumfries and north into the Dale City area west of I-95. In this corridor, there are two 115 kilovolt (kV) electric transmission lines that exclusively serve three NOVEC substations which provide power to more than 11,000 NOVEC customers. The Virginia State Corporation Commission approved this project on February 5, 2018.

Purpose

The key purpose of this project is to replace old infrastructure. The 115kV lines were originally built in 1948 and 1954 on wooden poles. Although well maintained, it has come time to completely replace these old transmission lines before they become a reliability concern.

Benefits

  • Requires no new right of way
  • Replaces the lines consistent with current electrical and safety standards
  • Creates flexibility in the network to address potential future needs
  • New structures are generally comparable in height and location to the existing 230kV lattice structures

Maps

Construction access map – review where construction entrances will be built and how we plan to reach each structure.

Existing project map

Construction Activities

  Timeline Starting Point Ending Point
Phase 1 July 2018 - February 2019*
Dominion Energy’s Possum Point Switching Station
NOVEC’s Country Club Substation
Phase 2 and 3 February 2019 - August 2019* NOVEC’s Country Club Substation
NOVEC’s Smoketown Substation

Project Overview Map

Phase 1 Schedule*:

  • Spring/Summer 2018 – Launch surveying and preconstruction activities
  • May/June 2018 – Begin constructing access roads
  • July 2018 – Begin active construction (working north from Possum Point)
    • Install new foundations
    • Remove old line(s)
    • Erect new structures
    • Pull new wire
  • Spring 2019 – Begin right of way restoration (phase 1)

*Schedule is dependent on weather and other factors.