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Great Lakes Gas Transmission

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Since 1967, Great Lakes Gas Transmission (GLGT) has delivered Canadian natural gas to communities on both sides of the border. The 2,115-mile (3,404-km) system provides the most direct and cost-effective link between Western Canada’s natural gas basins and population centers in Minnesota, Wisconsin, Michigan and Eastern Canada.

Along the way, the system employs hundreds of people, contributes to local economies and generates tax dollars that municipalities can use to build schools, hospitals, roads and more.

TC Energy effectively owns 66.6 percent of GLGT—53.6 percent through direct ownership and 26.8 percent through TC PipeLines LP.

For commercial information, visit TC Plus.com

Extends 2,115 miles (3,404 km)

Cost-effective link between Western Canada natural gas basin and the US Midwest

Proudly serving Canadian and American families since 1967

Documents and maps

How are we regulated?

GLGT is governed according to regulations outlined by the U.S. Federal Energy Regulatory Commission (FERC). It is also subject to rules and regulations of the Department of Energy (DOE) administered by the Pipeline and Hazardous Materials Safety Administration (PHMSA) and the Environmental Protection Agency (EPA).


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.

Great Lakes Gas Transmission Ltd. Partnership (TC Energy)

700 Louisiana Street
Houston, Texas 77002


Emergency Response
Our commitment to the safety of our pipelines and facilities is unwavering. In case of an emergency, please call the appropriate 24-hour toll-free hotline:
Great Lakes Gas Transmission Ltd. Partnership: 1-800-573-0640
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)