Founded in 1917, Alberta-based Suncor Energy, Inc. is Canada's premier integrated energy company. The company's operations include oil sands development and upgrading, conventional and offshore crude oil and gas production, petroleum refining, and product marketing. Suncor is one of the largest owners of oil sands in the world. The company has gained new oil sands properties to supplement its existing operations in northern Alberta, making it the dominant producer in the region where reserves are second only to Saudi Arabia.

Suncor's business can be divided into three main segments: Oil Sands, Exploration and Production (E&P), and Refining and Marketing.

Oil Sands: This segment mines and upgrades oil sands in Canada's Alberta province to produce refinery-ready synthetic crude oil. Oil Sands' base operations include Millennium and North and Steepbank facilities. The segments in-situ oil sands operations are at MacKay River and Firebag. The in-situ output is either upgraded by Oil Sands Base or blended with diluent and marketed directly to customers. This unit also includes Suncor's 54% and 59% stakes in Fort Hills and Syncrude projects, respectively. The segment accounted for around 43% of the company's 2023 operating revenues.

Exploration and Production (E&P): This unit includes offshore operations off the east coast of Canada and in the North Sea, and onshore operations in Libya and Syria. E&P Canada includes Suncor's stakes in Terra Nova, Hibernia, White Rose and Hebron projects. E&P International has stakes in Buzzard, Golden Eage and Rosebank assets in the North Sea. The company also owns oilfields in Sirte Basin in Libya and stakes in Elba gas development in Syria. The segment accounted for 5% of the company's 2023 operating revenues.

Refining and Marketing: Suncor's refining operations are located in Edmonton, Alberta, Montreal, Quebec, Sarnia, Ontario and Commerce City, CO. Refined products from its refineries are marketed through Sunoco and Petro-Canada branded retail outlets. The segment accounted for 52% of the company's 2023 operating revenues.

As of Dec 31, 2023, Suncor Energy had cash and cash equivalents worth C$1.7 billion and carried a total long-term debt of C$11.1 billion. Its total debt to total capital was about 20.4%.