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Trans Québec & Maritimes Pipeline (TQM)


The Trans Québec & Maritimes Pipeline (TQM) has been operational since 1982 and is owned equally by subsidiaries of two major Canadian companies in the natural gas industry, Énergir and TC Energy. TQM’s system is operated by TC Energy and supplies natural gas through Énergir to residential, commercial and industrial customers in Québec, as well as downstream customers in the Northeastern United States and Atlantic Canada.

The 649 km (403 miles) system includes 37 delivery points and four compressor stations and is interconnected to two storage sites and two renewable natural gas receipts. The system transports natural gas from an interconnect with TC Energy’s Canadian Mainline at Les Cèdres, Québec to a point near Québec City, in the municipality of Lévis on the south shore of the St. Lawrence River. Additionally, the system extends from Terrebonne, north of Montreal, to East Hereford, Québec on the border with New Hampshire, where it interconnects with the Portland Natural Gas Transmission System. In 2022, TQM integrated an existing pipeline into its system, from an interconnection with TC Energy’s Mainline in Sainte-Anne-de-Sabrevois, Québec to Shefford, Québec where it interconnects with the existing TQM pipeline.

The system is also interconnected with Énergir’s distribution system and provides approximately 50 per cent of the natural gas supply to Énergir. TQM crosses the territory of 83 municipalities and the property of approximately 1,900 landowners.

TQM is regulated by the Canada Energy Regulator (CER) with regard to its transportation tolls and its facilities.

For commercial information, visit TQM Pipeline.

649 km (403 miles) in length

Carries natural gas from Ontario, and PNGTS System in the Northeast US to Québec

Delivers fuel for business, industry and customers in Québec, Canada

Documents & maps

The Trans Québec & Maritimes Pipeline (TQM) safely supplies natural gas to business and customers in the province of Québec.

TQM Pipeline Map/Carte de Gazoduc TQM


How are we regulated?

The Trans Québec & Maritimes Pipeline (TQM) is governed according to regulations outlined by the Canada Energy Regulator (CER).

Canada Energy Regulator (CER)
Local 1-403-292-4800 1-403-292-5503
Toll-Free 1-800-899-1265 1-877-288-8803

Ways to reach us

If you have any questions about the Project, please reach out to us via the contact information below. 

TQM Pipeline

Gazoduc Trans Québec & Maritimes Inc. (TQM)
C/O TransCanada Pipelines Limited
450 – 1 St. SW
Calgary, Alberta
T2P 5H1

1-450-462-5300 1-800-661-3805 
1-888-810-8800 Toll-Free (North America) 1-450-462-5388


Emergency Response
Our commitment to the safety of our people, pipelines and facilities is unwavering, visit our Contact page for our complete list of emergency numbers.
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
450 – 1 St. SW
Calgary, Alberta
T2P 5H1

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)