TransCanada Corp. operates crude oil and natural gas pipelines, storage terminals, and power plants with assets in Canada, the United States, and Mexico. Affiliates include TransCanada Pipelines, NOVA Gas Transmission (NGTL), Columbia Gas Transmission, Columbia Gulf Transmission, Northern Border Pipeline (NBPL), ANR Pipeline, Great Lakes Gas Transmission (GLGT), Keystone Pipeline, Athabasca Pipeline, Iroquois Pipeline Operating (IPOC), Millennium Pipeline, North Baja Pipeline, and Gas Transmission Northwest (GTN). Operations are organized into five business units: Canadian Natural Gas Pipelines, U.S. Natural Gas Pipelines, Mexico Natural Gas Pipelines, Liquids Pipelines, and Power & Storage. Common shares are listed on the TSX (TRP) and NYSE (TRP) exchanges with common units in TC PipeLine listed on the NYSE (TCP) exchange.
Trans-Canada Pipe Lines was incorporated in 1951 by the Canadian parliament to develop the TransCanada pipeline (now called the Canadian Mainline) to deliver natural gas from western Canada to eastern Canada. The company acquired the Columbia Pipeline in 2016, expanding into the northeast United States. TransCanada was renamed TC Energy in 2019, and François Poirier replaced Russ Girling as CEO in 2020. The company offered to buy all outstanding units in MLP TC PipeLine in October 2020 with TC Energy shares.