Westcoast Energy Inc. is an integrated natural gas and natural gas liquids company comprised of gathering, processing, transmission, storage and distribution assets located in Canada. It operates through two segments: Transmission & Processing segment which provides transmission of natural gas, gathering and processing services, transportation, storage and marketing to customers in western Canada, the northern tier of United States and Maritime Provinces in Canada and the Distribution segment provides retail natural gas distribution service in Ontario, as well as natural gas transmission and storage services to other utilities and energy market participants. It derives most of the revenue from the transmission, storage, processing, distribution and sales of natural gas.