pipelines

April 30, 2026

WASHINGTON, DC – Today, the U.S. Court of Appeals for the Fourth Circuit denied motions for stay, pending judicial review, of both the Virginia Department of Environmental Quality’s (VDEQ) and the North Carolina Department of Environmental Quality’s (NCDEQ) Clean Water Act Section 401 Certifications for Mountain Valley Pipeline’s (MVP) Southgate Amendment pipeline project. 

April 29, 2026

WASHINGTON, D.C. - Several environmental groups filed a challenge to the Federal Energy Regulatory Commission’s (FERC) certificate for the controversial Southeast Supply Enhancement Project, or SSEP pipeline. 

April 23, 2026

The U.S. Supreme Court ruled unanimously against Enbridge Energy, saying the company cannot move a case from state to federal court. The lawsuit in question was brought by Enbridge in response to Michigan Attorney General Dana Nessel’s lawsuit to decommission the aging Line 5 pipeline under the Straits of Mackinac, a critical waterway. 

April 20, 2026

RICHMOND, Va. - Today, several environmental groups filed a lawsuit challenging the U.S. Army Corps of Engineers’ Clean Water Act permit for the controversial Southeast Supply Enhancement Project, or SSEP pipeline

March 31, 2026

WASHINGTON, DC – Today, seven conservation and community groups filed a court challenge to the Federal Energy Regulatory Commission’s (FERC) authorization for Mountain Valley Pipeline, LLC, to construct the MVP Southgate gas pipeline. The petition for review, filed by the Southern Environmental Law Center (SELC), Appalachian Mountain Advocates, and Sierra Club in the United States Court of Appeals for the District of Columbia Circuit, asks the court to vacate the amended certificate of convenience and public necessity issued by FERC in December 2025.

March 27, 2026

RALEIGH, N.C. – Today, a group of clean air and water advocates announced the launch of the NC Pipeline Watch to monitor construction of the Southeast Supply Enhancement Project pipeline (SSEP).

March 3, 2026

WASHINGTON, D.C. — Environmental groups filed a request for rehearing for the dangerous, expensive, and unnecessary Southeast Supply Enhancement Project, or SSEP.

February 20, 2026

Yesterday, the U.S. Army Corps of Engineers issued a permit for the Southeast Supply Enhancement Project, an interstate pipeline proposed by Transcontinental Gas Pipe Line Company, LLC. The Corps’ permit, issued under Section 404 of the Clean Water Act, authorizes Transco to cut crossings through more than 150 streams and wetlands.

January 30, 2026

WASHINGTON, D.C. — Yesterday, the Federal Energy Regulatory Commission (FERC) authorized the dangerous, expensive, and unnecessary Southeast Supply Enhancement Project, or SSEP.

December 19, 2025

RALEIGH, N.C. - Today, the North Carolina Department of Environmental Quality has approved the water and air permits for Transco’s proposed Southeast Supply Enhancement Project pipeline.

November 19, 2025

WASHINGTON, D.C. - The Sierra Club and its partners are asking the Federal Energy Regulatory Commission to release vital information from Mountain Valley Pipeline’s biological assessment for the proposed Southgate extension.

November 13, 2025

WASHINGTON, D.C. — Today, the North Carolina Department of Environmental Quality issued a Clean Water Act Section 401 certification for Mountain Valley Pipeline, LLC’s proposed methane gas pipeline “Southgate,” rejecting concerns raised by North Carolina community members that the project would pollute streams and wetlands and harm protected aquatic species. More than 2,400 comments were submitted to the DEQ during the public input period.