Only Petro Canada and only from two stations in Edmonton...the ones on Calgary Trail by the Chapters (just north of the new 23rd ave interchange) or on 97th st before 163rd Ave.
Both of these stations have dedicated premium pumps so no mixing of lower grade gas with the premium.
Personally speaking, the NEP is 30yrs old...time to move on. Do what's right for your car. Petro Canada is a private company now and the NEP is long dead. Otherwise, would you consider boycotting BMW's, seeing that they are a product of former Nazi Germany?