AUI commenced operations as an Alberta, provincially regulated, natural gas distribution utility in 1954. Its head office is located in Leduc, Alberta. AUI delivers natural gas to residential, farm and C&I consumers in more than 90 communities throughout Alberta. At the end of 2018, AUI served approximately 80,400 customers
AUI also owns transmission facilities, including, without limitation, high-pressure pipelines that deliver natural gas from gas sources to the distribution systems.