Canadian Utilities Limited, together with its subsidiaries, engages in the electricity, natural gas, renewables, pipelines, and liquids businesses in Canada, Australia, and internationally. It operates through ATCO Energy Systems, ATCO EnPower, ATCO Australia, and Financing & Other segments. The ATCO Energy Systems segment provides regulated electricity transmission and distribution services in northern and central east Alberta, the Yukon, the Northwest Territories, and in the Lloydminster area of Saskatchewan; and international electricity services, as well as offers integrated natural gas transmission and distribution services throughout Alberta and in the Lloydminster area of Saskatchewan.