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ATCO Group
FormerlyAlberta Trailer Company
TSXACO.X (Non-voting)[1]
TSXACO.Y (Voting)[1]
IndustryElectricity generation and distribution, natural gas, construction, logistics
FoundersS. Don Southern & Ron Southern
HeadquartersCalgary, Alberta, Canada
Key people
Nancy Southern (CEO)
Number of employees
6,500 (2020)

ATCO Ltd., operating as the ATCO Group, is a publicly-traded Canadian engineering, logistics and energy holding company based in Calgary, Alberta. ATCO's subsidiaries include electric utilities, natural gas production and distribution companies, and construction companies.


The ATCO Group of Companies includes the following subsidiaries:

Canadian Utilities, with its subsidiaries:

  • CU Inc., which in turn owns:
  • ATCO Australia - Established in 2010. 'In July 2011, ATCO purchased the largest reticulated gas infrastructure in Western Australia through the acquisition of Western Australia Gas Networks. The $1.1 billion AUD purchase of what is now called ATCO Gas Australia, is one of the largest acquisitions in ATCO's history. ATCO Gas Australia is a gas distribution utility that serves the Perth metropolitan area and major towns and cities throughout the state of Western Australia. Its combined networks constitute approximately 13,100 km of natural gas pipelines connecting more than 650,000 customers ... ATCO Australia also includes ATCO Power Australia, which has three power stations operating in Brisbane, Adelaide and Karratha. In January 2011, these plants were transferred from ATCO Power, based in Calgary, Alberta, Canada, which operates 15 power generating facilities in Canada and the United Kingdom. While not part of ATCO Australia, ATCO Structures & Logistics is an important part of ATCO's Australian operations with three manufacturing facilities and five office locations in the country.'[2]
  • ATCO Energy Solutions (natural gas processing and storage)
  • ATCO Power (electricity generation)
  • ATCOenergy (natural gas and electricity retailing)
  • ATCO Mexico - Established in 2014. (natural gas, electricity, power generation and structure and logistics)

ATCO Structures & Logistics (manufactures, leases, and sells modular buildings; created by the merger of ATCO Structures, ATCO Noise Management and ATCO Frontec)

ATCO Sustainable Communities (sustainable infrastructure for remote and Aboriginal communities)


ATCO was founded in 1947, by S. Don Southern who gave a minority stake to his son Ron Southern, under the name Alberta Trailer Hire, renting fifteen utility trailers in the Calgary area.[3] As the company's operations grew, they also began to sell trailers, first becoming the Alberta Trailer Company, then ATCO. By the early 1960s, the company had operations across North America and in Australia.

ATCO Industries Ltd. became a public company in March 1968, with shares traded on the Toronto Stock Exchange. During the 1970s, the company expanded into the natural gas and petroleum industries, and into the electricity industry in the 1980s.

In 2004, with the deregulation of the retail energy industry in Alberta, ATCO sold the retail operations of ATCO Gas and ATCO Electric to Direct Energy Marketing Ltd. while ATCO Gas and ATCO Electric still operated as "distributors" (owning and operating the infrastructure that delivers natural gas or electricity in its service territories). As part of the sale to DEML, DEML contracted call center and billing services from ATCO I-Tek. In 2016, ATCO re-entered the retail energy industry in Alberta as ATCOenergy.

In 2018, ATCO acquired 40% of the shares in Neltume Ports, a South American port terminal operator.


  1. ^ a b "Stock Information". ATCO Ltd. Archived from the original on 21 May 2017. Retrieved 26 February 2017.
  2. ^ ATCO Expands in Australia
  3. ^ Foran, Max (1982). Calgary, Canada's frontier metropolis : an illustrated history. Windsor Publications. p. 280. ISBN 0-89781-055-4.[permanent dead link]

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