Suncor Energy Inc. is an integrated Canadian energy company based in Calgary, Alberta, whose operations include oil-sands development and upgrading, conventional and offshore oil and gas production, petroleum refining and product marketing under the Petro-Canada and Sunoco brands. In March 2009, Suncor and Petro-Canada agreed to a merger worth approximately $15.5 billion in U.S. dollars.

The company's combined retail network comprises as many as 1,500 Petro-Canada company-controlled and dealer locations nationwide, many of which have Glide or SuperWash car washes. Of the Petro-Canada-branded sites, about 600 are company-controlled SuperStop or Neighbours operations. Non-truckstop stores measure as small as 800 square feet and as large as 4,000 square feet; on average newly built stores span 1,500 square feet. The Petro-Canada name has extremely strong brand recognition in Canada, as evidenced by the company tagline "Canada's Gas Station."

Headquarters:Mississauga, Ontario
No. of Stores:752
Average Store Size:1,000-2,500 sq. ft.
Rank Last Year:11
States of Operation: Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Northwest Territories, Nunavut, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon