TransCanada Corporation operates as an energy infrastructure company in North America. The company operates in three segments: Natural Gas Pipelines, Oil Pipelines, and Energy. The Natural Gas Pipelines segment owns and operates energy infrastructure, including natural gas pipelines and regulated natural gas storage facilities. Its natural gas pipeline systems consist of a network of approximately 57,000 kilometers (kms) of wholly owned natural gas pipelines, and approximately 11,500 kms of partially owned natural gas pipelines; and regulated natural gas storage facilities with a total capacity of 250 billion cubic feet (Bcf). The Oil Pipelines segment owns and operates Keystone crude oil pipeline system comprising 3,467 kilometers transporting crude oil from Hardisty, Alberta to Wood River and Patoka in Illinois; and to Cushing in Oklahoma. The Energy segment engages in the acquisition, development, construction, ownership, and operation of electrical power generation plants; purchase and marketing of electricity; provision of electricity account services to energy and industrial customers; and development, construction, ownership, and operation of natural gas storage in Alberta, Canada. It owns, controls, or develops approximately 11,800 megawatts of generation capacity powered by natural gas, nuclear, coal, hydro, wind, and solar assets; and owns and controls approximately 156 Bcf of unregulated natural gas storage capacity. TransCanada Corporation was founded in 1951 and is headquartered in Calgary, Canada.

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