Canadian Utilities Limited (CU) is a Canada-based holding company. CU is organized in four segments: The Utilities, Power Generation, Global Enterprises, and Corporate and other. Utilities include the regulated distribution of natural gas by ATCO Gas, the regulated transmission and distribution of water by CU Water, the regulated transmission of natural gas by ATCO Pipelines, the regulated distribution and transmission of electric energy by ATCO Electric and its subsidiaries, Northland Utilities (NWT), Northland Utilities (Yellowknife) and Yukon Electrical, and the provision of non-regulated projects by ATCO Energy Solutions. Power Generation includes the non-regulated supply of electricity and cogeneration steam by ATCO Power, the regulated supply of electricity by Alberta Power (2000), and the sale of fly ash and other combustion by-products. Global Enterprises includes the non-regulated gathering, processing, storage, purchase and sale of natural gas by ATCO Midstream.