Suncor Energy Inc.
TSX : SU
NYSE : SU

Suncor Energy Inc.

19 janv. 2007 23h59 HE

Suncor Energy begins planned maintenance activities at Commerce City refinery

Denver, Colorado (January 19, 2007) — Suncor Energy (U.S.A.) Inc. announced that a planned maintenance shutdown on one of the refinery's crude units will begin today.

The remainder of the plant will remain in operation and Suncor will continue to produce products throughout the shutdown. Suncor has made the necessary preparations for the shutdown to ensure all customer supply agreements will be met.
 
The maintenance activities on the crude unit are expected to take approximately 16 days, including shutdown and start-up.

Suncor's objective is to complete all work safely while minimizing any impacts on our neighbors, our customers and the environment.

Suncor Energy (U.S.A.) Inc. is a wholly-owned subsidiary of Suncor Energy Inc., an integrated energy company based in Calgary, Canada. Suncor Energy U.S.A.'s business includes refining operations and retail sales in the Denver area under the Phillips 66® brand, and pipeline operations in Colorado and Wyoming. Suncor's common shares (symbol: SU) are listed on the New York and Toronto stock exchanges.

- 30 -

For further information, contact:
Lisha Burnett
(303) 570-2540