Spectra Energy Corp engages in the ownership and operation of a portfolio of natural gas-related energy assets in North America. The company’s U.S. Transmission segment engages in the transportation and storage of natural gas for customers in various regions of the northeastern and southeastern United States and the Maritime provinces in Canada. This segment’s natural gas pipeline systems consist of approximately 19,000 miles of transmission pipelines; and storage capacity comprises 305 billion cubic feet (Bcf). Its Distribution segment provides natural gas storage, transmission, and distribution services for residential, commercial, and industrial customers primarily in Canada. This segment has approximately 39,000 miles of distribution main and service pipelines; storage capacity of approximately 155 Bcf; and transmission system of approximately 2,900 miles of high-pressure pipeline and 6 mainline compressor stations. The company’s Western Canada Transmission and Processing segment offers natural gas transportation, and gas gathering and processing services; and provides services to natural gas producers to remove impurities from the raw gas stream, including water, carbon dioxide, hydrogen sulfide, and other substances. It is involved in the extraction, fractionation, transportation, storage, and marketing of natural gas liquids (NGLs) for western Canadian producers and NGL customers. This segment serves local distribution companies, end-use industrial and commercial customers, marketers, and exploration and production companies. Spectra’s Field Services segment gathers, processes, treats, compresses, transports, and stores natural gas, as well as fractionates, transports, gathers, treats, processes, stores, markets, and trades NGLs. It owns or operates approximately 62,000 miles of gathering and transmission pipelines. This segment also markets propane in the northeastern United States. The company was incorporated in 2006 and is headquartered in Houston, Texas.