Alberta EnviroFuels (AEF) is the largest iso-octane manufacturing facility in the world, located in Edmonton, Alberta. With a 13,600 barrel per day capacity, AEF utilizes butane as its primary feedstock and has pipelines connected to Keyera's NGL infrastructure. The facility's iso-octane production is distributed to various customers, including major refiners in California and Alberta. Keyera Corp acquired AEF, further enhancing its position in the natural gas midstream business in Canada.