Mountain Valley Pipeline (MVP) Southgate Amendment Project

Introduction

In February 2020, Federal Energy Regulatory Commission (FERC or Commission) staff issued a final Environmental Impact Statement (EIS) that analyzed the Southgate Project.  On June 18, 2020, the Commission authorized the Southgate Project.  Mountain Valley Pipeline, LLC (MVP) further evaluated the Southgate Project and proposes modifications as part of the Southgate Amendment Project (Amendment Project). Please note that the Commission has not issued a decision on the project.

On February 3, 2025, MVP filed an application with FERC for the Amendment Project in Docket No. CP25-60-000. 

The Commission has prepared an Environmental Assessment that discusses the environmental impacts of the Mountain Valley Pipeline (MVP) Amendment Project involving construction and operation of facilities by Mountain Valley Pipeline, LLC in Pittsylvania County, Virginia and Rockingham County, North Carolina.  The Commission will use this environmental document in its decision-making process to determine whether the Amendment Project is in the public convenience and necessity.

Project Route and Facilities

The Amendment Project includes the following modifications to the previously authorized Southgate Project.

• The Lambert Compressor Station has been removed and is no longer proposed;
• The length of the pipeline has decreased from 75.1 miles to 31.3 miles;
• The pipeline diameter would increase from 16- and 24-inch diameters to 30-inch diameter;
• The pipeline's operating capacity would increase from 375,000 dekatherms per day (Dth/d) to 550,000 Dth/d;
• The Southgate Project included four meter (interconnect) stations. The Amendment Project would also include four meter (interconnect) stations, one of which would include a pig launcher and one which would include a pig receiver. Two of the four meter stations are new facilities identified for the Amendment Project, but are entirely located within Southgate Project certificated workspace;

• Six route deviations from the Southgate Project (totaling 3.1 miles) have been incorporated into the Amendment Project. Centerline shifts for the route deviations generally range from 25 feet to about 1,410 feet, for engineering and environmental reasons;
• Eight mainline valves were in the Southgate Project; four have been removed and are no longer proposed;
• Four cathodic protection groundbeds were in the Southgate Project; two have been removed and are no longer proposed;
• 13.5 acres of additional temporary workspaces were added;
• Two new contractor yards were added; and
• 3.8 acres of temporary access roads were added.

The purpose of the pipeline is to transport natural gas from an interconnection point with the MVP Main Line project in Virginia to an interconnection point with the East Tennessee Natural Gas, LLC, system in North Carolina.   

More Information and Staying Updated

You may learn more about the Project through FERC’s eLibrary. When searching for the Project, please enter Docket No. CP25-60-000 in the “Enter Docket Number” text box.

FERC’s Office of Public Participation provides an educational video and demonstration on using eLibrary: WorkshOPP and Demonstration: FERC’s eLibrary.

Stay Informed:

Follow OPP on its social media channels:  

• X  
• Facebook 
• LinkedIn 
• Instagram 
• Bluesky 

OPP regularly sends announcements about upcoming participation opportunities and meetings with interested stakeholders and organizations via its social media channels.  

You may also sign up for FERC’s eSubscription service. eSubscription notifies you via email about submittals and issuances on the project. Please visit www.ferc.gov/esubscription.

You are also encouraged to contact OPP staff to learn more about the Project and participation at FERC by email at [email protected] or phone at 202-502-6595. All media inquiries should be directed to [email protected].

Resources

Guides on Public Participation 

• Step-by-step guide on how to file a comment 
• Step-by-step guide on how to intervene 

Educational Videos 

• Learn to eFile, eComment, and eSubscribe 
• How to File an Intervention Using FERC’s Online System 
• Filing Comments Workshop and Demonstration
• Submitting Powerful Comments Workshop

Tips on Public Participation 

• How to Submit Effective Comments 
• Powerful Comments 
• Filing an Intervention

Informational Handouts 

• About FERC 
• About OPP 
• Natural Gas Pre-filing Open Houses: Public Participation and What to Expect
• Natural Gas Scoping Sessions: Public Participation and What to Expect

Project Background

October 3, 2025: FERC issued Notice of Availability of the Environmental Assessment for the Proposed Mountain Valley Pipeline Southgate Amendment Project

June 16 &17, 2025: FERC held Scoping Sessions in Chatham, VA and Wentworth, NC, respectively.

May 22, 2025: FERC issued a Notice of Scoping Period

February 3, 2025: MVP filed an application with FERC for the Amendment Project in Docket No. CP25-60-000. 

Office of Public Participation's Outreach Corner

The Office of Public Participation (OPP) is authorized to support public participation in FERC proceedings pursuant to Section 319 of the Federal Power Act. OPP coordinates with and provides assistance to members of the public as to participation in, and understanding of, FERC proceedings. OPP provides outreach to community groups, community members, landowners and other interested parties potentially impacted by infrastructure projects.

• In June 2025, OPP staff attended the Scoping Sessions in Chatham, Virginia and Wentworth, North Carolina.

How to Contact