- ATCO Land and Development Ltd. includes commercial real estate investments held for sale, lease or development.
- ASHCOR Technologies Ltd. (ASHCOR) is an Alberta-based company engaged in the processing and marketing of ash.
- Canadian Utilities’ 100 per cent owned subsidiary CU Inc. includes electricity distribution, electricity transmission, natural gas distribution and natural gas transmission.
- International Electricity Operations includes Canadian Utilities’ 50 per cent ownership in LUMA Energy, LLC (LUMA Energy), a company formed to transform, modernize and operate Puerto Rico’s 30,000 km electricity transmission and distribution system under an Operations and Maintenance Agreement with a 15-year term after a one-year transition period, which began on June 22, 2020.
- Canadian Utilities owns 296-MW of non-regulated electricity generation assets in Australia, Mexico, Canada and Chile.
- Retail Energy, through ATCO Energy Ltd. (ATCOenergy), provides retail electricity and natural gas service in Alberta.