Suncor Energy's refining and marketing operations provide a vital link between our large Canadian resource base and the growing North American energy market. We process oil sands crude into the high-quality refined products that consumers demand.

Suncor operates refineries in Alberta, Ontario, Quebec and Colorado.

• Edmonton, Alberta: 135,000-barrel-per-day refinery runs entirely on oil sands-based feedstocks and produces a high yield of light oils
• Montreal Quebec: 130,000-barrel-per-day refinery produces gasoline, distillates, asphalts, heavy fuel oil, petrochemicals, solvents and feedstock for lubricants
• Commerce City, Colorado: 93,000-barrel-per-day refinery produces gasoline, diesel fuel and paving-grade asphalt
• Sarnia, Ontario: 85,000-barrel-per-day refinery produces gasoline, kerosene, jet and diesel fuels

We've completed major improvements to our refineries, greatly increasing the amount of oil sands crude that can be refined, while improving environmental performance.

• In 2008, the Edmonton refinery completed project that optimized the facility for processing oil-sands crude feedstocks.
• At the Sarnia refinery, a $1-billion investment in new equipment has enabled the production of lower sulphur diesel fuel and improved operational efficiency
• At the Commerce City refinery, a $540-million (US$445-million) upgrade has enabled the refinery to meet clean fuels regulations and handle a wider range of oil sands products
• In addition to work already completed to improve refinery efficiency, the addition of cokers to allow processing of heavier crude feedstocks is being considered for the Montreal refinery.