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AltaGas Ltd.
Traded asTSXALA
IndustryPetroleum Industry
Power Generation
Gas Utilities
FoundedApril 1, 1994
HeadquartersCalgary, Alberta, Canada
Areas served
United States
Key people
  • Pentti Karkkainen
    Chairman of the Board
  • Randall Crawford
    Chief Executive Officer
ProductsElectricity generation, natural gas
RevenueIncreaseC$ 4.26 Billion (2018)[1]
DecreaseC$ -454 Million (2018)[1]
Total assetsIncreaseC$ 23.49 Billion (2018)[1]
Total equityIncreaseC$ 7.64 Billion (2018)[1]
Number of employees
SubsidiariesWGL Holdings

AltaGas is a North American energy infrastructure company based in Calgary, Alberta. The company operates in three business segments: Utilities, Midstream, and Power.


AltaGas began operations in Calgary in 1994 in the natural gas business, with the goal of building a western Canadian midstream business. The company later began its utility segment in 1998 in Alberta, and entered the power business in 2001.

In 2017 AltaGas agreed to purchase WGL Holdings, significantly expanding its presence in the United States.[2]



AltaGas operates regulated utilities that store and deliver natural gas to end‑users across North America. The utility businesses serve approximately 1.8 million customers.


The Midstream segment serves customers primarily in the Western Canadian Sedimentary Basin and transacts more than 2 billion cubic feet (57 million cubic metres) per day of natural gas. The division serves many purposes including natural gas gathering and processing, natural gas liquids extraction and separation, transmission pipelines delivery for both gas and liquids, storage and marketing.


AltaGas generates and sells electricity through both natural gas power plants and renewable sources, with a total capacity of 1,708 megawatts. The company also owns 20MW of battery storage in Pomona, California.


  1. ^ a b c d "AltaGas Announces Fourth Quarter and Full-Year 2018 Results and Reaffirms 2019 Outlook and Balanced Funding Plan | AltaGas". Retrieved 2019-03-05.
  2. ^ "AltaGas to buy WGL Holdings for $4.5-billion in major U.S. push". Retrieved 2018-04-27.