CALGARY, July 7 /PRNewswire-FirstCall/ -- Suncor Energy Inc. reported today that production at its oil sands facility during June averaged approximately 144,000 barrels per day (bpd). Production volumes reflect planned and unplanned maintenance during the month, including a complete shutdown of one of the company's two upgraders. The maintenance is now substantially complete and operations have ramped up to regular volumes. Year-to-date oil sands production at the end of June averaged approximately 211,000 bpd. On a monthly basis, Suncor reports production numbers from its oil sands operation in order to provide stakeholders with a more timely review of operational performance. These numbers are preliminary and subject to adjustment. Monthly totals may differ from year-to-date total due to rounding, the impact of sales and changes in inventory. Production volumes will be confirmed when Suncor's second quarter results are released on July 24, 2008. 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 refining operations in Colorado and retail sales in the Denver area under the Phillips 66(R) brand. Suncor's common shares (symbol: SU) are listed on the Toronto and New York stock exchanges. Sunoco in Canada is separate and unrelated to Sunoco in the United States, which is owned by Sunoco Inc. of Philadelphia. Suncor Energy (U.S.A.) Inc. is an authorized licensee of the Phillips 66(R) brand and marks in the state of Colorado. DATASOURCE: Suncor Energy Inc. CONTACT: Brad Bellows, (403) 269-8717

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