Canadian Mainline

Overview

The Canadian Mainline, still connecting customers more than 60 years later.

The Canadian Mainline safely carries natural gas from the Western Canada Sedimentary Basin (WCSB) to markets in the Prairies, Eastern Canada (Ontario, Quebec and Atlantic Canada), the Midwestern U.S. and Northeastern U.S. through reliable Firm Transportation (FT) Services, Long-Term Fixed Price (LTFP) Services and a variety of other services to meet our customers' needs. Throughout its history, this 14,082 km (8,750 mile) pipeline has helped create jobs, spurred development and powered industries in communities nationwide.

For commercial information, visit TCCustomerExpress.com.

How are we regulated

The Canadian Mainline (Mainline) is governed according to regulations outlined by the Canada Energy Regulator (CER).

The Mainline currently operates under fixed tolls as negotiated in the 2021-2026 Mainline Settlement, which ends December 31, 2026.

The Settlement is the product of a comprehensive, collaborative process of engagement and negotiation between TC Energy and interested Mainline stakeholders. It enhances competitiveness and provides toll certainty for customers while maintaining stable revenue for the Mainline. The Settlement addresses a broad range of inter-related services and tolling matters on the Mainline system, including the approach to establishing fixed-tolls during the six-year term of the Settlement, the derivation of the revenue requirement, toll design and tariff provisions, and various services and tolling matters. The Settlement represents a balance of interests resulting from compromises of the diverse interests and positions of the parties.

Regulatory contact

The Canadian Mainline System is governed according to regulations outlined by the Canada Energy Regulator (CER).

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