With four congenerating plants in Alberta, TransCanada manages, operates and markets close to 450 megawatts (MW) of electricity. Alberta Power Marketing offers wholesale power for a range of industries, including agriculture, oil and gas, commercial real estate, large scale commercial and industrial, public institutions and brokers and consultants.

The TQM Pipeline System is a 573 km natural gas pipeline network in the Province of Quebec between Saint-Lazare, located west of Montreal, and Saint-Nicolas, located on the South Shore of Quebec City, and between Lachenaie, located East of Montreal, and East Hereford on the New Hampshire border.

The Tamazunchale Pipeline is a 370 km (230 miles) natural gas pipeline, comprised of two segments: Naranjos – El Sauz (130 km) and Tamazunchale - El Sauz, better known as the Tamazunchale Extension (240 km). The pipeline serves communities on the East Coast of Mexico and Central Mexico.

The Guadalajara Pipeline connects to an LNG facility located near Manzanillo on the Pacific Coast of Mexico. It has capacity to transport 500 million cubic feet of natural gas per day to a nearby power plant and transport 320 million cubic feet per day to a pipeline system near Guadalajara.

TransCanada Corporation announced its Leach XPress (LXP) project was placed in-service on January 1, 2018, and that the Federal Energy Regulatory Commission (FERC) has issued a certificate of public convenience and necessity for its Mountaineer XPress (MXP) and Gulf XPress (GXP) projects on December 29, 2017.