AltaGas Ltd. is a North American energy infrastructure Company that connects natural gas liquids (NGLs) and natural gas to domestic and global markets. It operates through the following segments: Utilities, Midstream, and Corporate and Other. The Utilities segment serves its customers through ownership of regulated natural gas distribution utilities and regulated natural gas storage utilities in the United States, delivering clean and affordable natural gas to homes and businesses. The Utilities segment also includes storage facilities and contracts for interstate natural gas transportation and storage services, as well as the affiliated retail energy marketing business. The Midstream segment includes field gathering and processing facilities, extraction facilities, storage facilities, truck hauling services, rail and truck loading and unloading terminalling, and transmission systems. The Corporate and Other segment consists of AltaGas' corporate activities and a small portfolio of remaining power assets. The company was founded by David Wallace Cornhill on April 1, 1994 and is headquartered in Calgary, Canada.