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Liberty-Winters Branch

Lines 172 and 197 Upgrades and Cannon Branch-Winters Branch Line Extension

This project in Prince William County and the city of Manassas, Virginia involves upgrading two existing 115 kV electric transmission lines to 230 kV and building a new 230 kV electric transmission line between two existing substations.

Update

November 2020 – Sent project announcement postcard to landowners along the right of way corridor.

Overview

Upgrade the existing 115 kV line that runs between our Liberty Substation and the city of Manassas' Lomar Substation to operate at 230 kV
Partially rebuild and upgrade the existing 115 kV line that runs between the City of Manassas' Lomar and Dominion Delivery Point substations and our Cannon Branch Substation to operate at 230 kV
Build a new 230 kV transmission line from our Cannon Branch Substation to our Winters Branch Substation

Purpose

Electric transmission planning engineers conduct studies to evaluate scenarios where the loss of electric transmission assets would result in an overload on the grid. This project proactively addresses the issues identified in these studies to maintain federal reliability standards and strengthen grid resiliency.

Timeline

November 2020 – Notify public of project
November-December 2020 – Complete initial surveying activities
TBA – Hold virtual community meeting
Spring 2021 – File application with SCC
January 2023 (anticipated) – Begin construction
End of 2023 (anticipated) – Complete project

Maps

Existing Project Overview Map

SCC Approval Process

The Virginia State Corporation Commission (SCC) is responsible for verifying the need, determining the route and reviewing the environmental impact of certain transmission lines in Virginia.

The company intends to file its application with the SCC in 2021. Documents related to the case will be available to the public on the SCC Docket Search section of the SCC website in the "Search Cases" section. In addition, interested parties may comment directly to the SCC by sending an email to sccinfo@scc.virginia.gov.

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