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Portland Natural Gas Transmission System

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Portland Natural Gas Transmission System is an interstate pipeline that provides natural gas for everything from family homes to paper mills and electricity generating plants across New England. The system opened for business on March 10, 1999, and is strategically located between three major pipeline networks originating in Canada and the southern U.S.

TC Energy operates Portland Natural Gas Transmission System and effectively owns 16.3 percent of the pipeline through a 26.4 percent interest in TC PipeLines, LP.

For commercial information, visit PNGTS.com.

Informational Postings.


Proposed Portland XPress Project

More energy for New England

Portland Natural Gas Transmission System (PNGTS) is proposing Portland XPress to increase New England’s supply of energy without construction of new underground facilities. Added to existing capacity, Portland XPress will be capable of transporting 0.2 billion cubic feet a day (Bcf/d) to areas where it is in great demand.

This increase in much-needed natural gas access for New England will be achieved via modifications to the existing compressor station in Westbrook Maine and horsepower addition to the existing compressor station in Eliot, Maine. Both sites are jointly owned by PNGTS and Maritimes and Northeast Pipeline (MNE).

Documents and maps

The Portland pipeline transports natural gas for household use, paper mills and electric generation plants in New England.

Explore the route and facilities that make up this important piece of infrastructure.


Regulatory contact

The Portland Natural Gas Transmission System is governed according to regulations outlined by the Federal Energy Regulatory Commission (FERC). It is also subject to rules and regulations of the Department of Energy administered by the Pipeline and Hazardous Materials Safety Administration and the Environmental Protection Agency.

Federal Energy Regulatory Commission (FERC)
Local 1-202-502-6088
Toll-Free 1-866-208-3372


Ways to reach us

We’re here to answer your questions. For general questions you can contact us by email, but for a quicker response, please call us directly.

Portland Natural Gas Transmissions System (TC Energy)
One Harbour Place
Portsmouth, NH
1-877-287-1782 Toll-Free (North America)


Emergency Response
Our commitment to the safety of our people, pipelines and facilities is unwavering. In case of an emergency, please call the appropriate 24-hour toll-free hotline:
Canada: 1-888-982-7222
US: 1-800-447-8066

Landowner Helpline
A key component in maintaining the integrity of our facilities is input from all stakeholders: Indigenous communities, landowners and governments. If you have questions or concerns, please let us know.

Head Office
700 Louisiana Street
Houston, Texas 77002


Media Relations
TC Energy welcomes enquiries from media. Please direct questions to:
1-800-608-7859 Toll-free (North America)

Investor Relations
We welcome inquiries from analysts, shareholders and prospective shareholders at:
1-800-361-6522 Toll-free (North America)