Transportadora de Gas del Sur S.A. engages in transportation of natural gas, and production and commercialization of natural gas liquids in Argentina and internationally. The company operates through four segments: Natural Gas Transportation Services; Liquids Production and Commercialization; Midstream; and Telecommunications. The Natural Gas Transportation segment transports natural gas through pipeline system to distribution companies, power plants, and industrial customers. It provides operation and maintenance services for the natural gas transportation facilities. The Liquids Production and Commercialization segment produces and commercializes natural gas liquids, such as ethane, liquid petroleum gas, natural gasoline, propane, and butane. This segment offers certain related services comprising reception, storage, and dispatch of the liquids. The Midstream segment provides natural gas conditioning services; treatment, removal of impurities and natural gas compression, including the collection and transport of natural gas; and inspection and maintenance of pipelines and compressor plants services. In addition, this segment offers steam generation for electricity production and management services for expansion works and steam generation for the production of electricity. The Telecommunications segment offers data transmission services through a network of digital terrestrial radio relay. It serves residential, commercial, industrial, and electric power generation end users. The company was incorporated in 1992 and is headquartered in Buenos Aires, Argentina. Transportadora de Gas del Sur S.A. is a subsidiary of Compa?ía de Inversiones de Energía S.A.