Canadian company Suncor Energy, which owns Colorado’s two oil refineries in Commerce City, on Thursday said it has signed a marketing agreement with Shell Oil Products.

The agreement allows Suncor and its marketers to sell Shell-branded fuel in the state.

“Suncor views our branded sales channel as key to our success in Colorado,” said Steve Douglas, Suncor’s vice president of supply and marketing. “This agreement positions Suncor well to continue to provide quality fuels to our marketers and consumers under the Shell brand, the No. 1-selling gasoline brand in America.”

The Commerce City refineries have a combined capacity of more than 90,000 barrels a day, supplying about a third of Colorado’s gasoline and diesel-fuel demand.

Suncor has an existing agreement to sell fuel under the Phillips 66 brand in Colorado through July 2013. It will sell Phillips 66- and Shell- branded fuel through the end of the agreement, the company said.

Suncor owns 44 Phillips 66 gas stations throughout Colorado and supplies fuel to an additional 140 Phillips 66 pumps through its marketers.

Gargi Chakrabarty: 303-954-2976 or [email protected]