Suncor Energy Inc.
TSX : SU
NYSE : SU

Suncor Energy Inc.

26 nov. 2007 23h59 HE

Suncor Energy's Sarnia refinery completes project to improve environmental performance and strengthen integration with oil sands operation

All financial figures in Canadian dollars.

Sarnia, Ontario (November 26, 2007) — Suncor Energy Inc. announced today that the final phase of a three year project that resulted in nearly $1 billion being invested in its Sarnia refinery is nearing completion.

A shutdown of some units during the past three months to tie-in the new facilities is now complete and the refinery is ramping up to full production. During start-up, community members may observe increased flaring and noise; precautions have been taken to minimize potential disruptions.

The shutdown to complete the tie-ins is the last step in a multi-phased project that began in 2004 and is estimated to cost about $960 million. Suncor made the investments to increase the amount of oil sands crude oil the refinery can upgrade, improve the facility's environmental performance, and enable the production of ultra low sulphur diesel fuel. The upgrades to enable the production of ultra low sulphur diesel fuel were completed in 2006.

"Suncor made a substantial investment to strengthen the integration between our oil sands operation in Northern Alberta and our Ontario-based businesses," said Tom Ryley, Suncor's executive vice president. "In this era of tight supply and high costs we now have a stronger, more direct connection to the growing supply generated through oil sands development and more options for producing the quality energy products Ontario consumers demand."

The investment also generated additional benefits, said Ryley. "The project reduced sulphur dioxide emissions, which is good for the environment, while the economy also benefited from spinoffs created through job creation and the purchase of goods and services."

At peak construction, the project employed a temporary workforce of approximately 1,600 people. Suncor employees and contractors demonstrated excellent safety performance on the project by achieving a significant safety milestone: 5.8 million hours of work without a lost-time injury.

This news release contains forward-looking statements. The forward-looking statements may be identified by words like "ramping up," "estimated," "is nearing" and similar expressions. These forward-looking statements are based on current conditions and assumptions and are not a guarantee of future events. Actual events could differ materially as a result of changes to Suncor's plans and the impact of certain events, risks and uncertainties.

Suncor Energy Inc. is an integrated energy company headquartered in Calgary, Alberta. Suncor's oil sands business, located near Fort McMurray, Alberta, extracts and upgrades oil sands and markets refinery feedstock and diesel fuel, while operations throughout Western Canada produce natural gas. Suncor operates a refining and marketing business in Ontario with retail distribution under the Sunoco brand. U.S.A. downstream assets include pipeline and refining operations in Colorado and Wyoming and retail sales in the Denver area under the Phillips 66® brand. Suncor's common shares (symbol: SU) are listed on the Toronto and New York stock exchanges.

Suncor's Sarnia refinery is operated by Suncor Energy Products Inc., a wholly-owned subsidiary of Suncor Energy Inc., an integrated energy company. In addition to a refinery in Sarnia, Suncor Energy Products has a network of more than 300 Sunoco-branded retail and Fleet Fuel cardlock sites and has a 50 per cent joint venture interest in more than 200 Pioneer and UPI retail sites. Suncor Energy Products Inc. manufactures, distributes and markets transportation fuels, heating oils and petrochemicals primarily in Ontario. Sunoco in Canada is separate and unrelated to Sunoco in the United States, which is owned by Sunoco, Inc. of Philadelphia.

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For more information, contact: 
Jason Vaillant, media relations, 519-383-3691
John Rogers, investor relations, 403-269-8670