CALGARY, Sept. 7 /PRNewswire-FirstCall/ -- Petro-Canada (TSX: PCA, NYSE: PCZ) - Harry Roberts, Executive Vice-President and Chief Financial Officer at Petro-Canada will present at the Ninth Annual Peters & Co. North American Oil & Gas Conference in Toronto on Tuesday, September 13, 2005 at 9:15 a.m. EDT (7:15 a.m. MDT). The presentation will include information on Petro-Canada's performance, growth strategy and outlook. A live webcast of the presentation and an electronic copy of the slides can be accessed from the Petro-Canada website: http://www.petro-canada.ca/eng/investor/9255.htm. A postview of the webcast will be available until December 13, 2005. Petro-Canada is one of Canada's largest oil and gas companies, operating in both the upstream and the downstream sectors of the industry in Canada and internationally. Its common shares trade on the TSX under the symbol PCA and on the New York Stock Exchange under the symbol PCZ. DATASOURCE: Petro-Canada CONTACT: Investor and analyst inquiries: Gordon Ritchie, Investor Relations, Petro-Canada, Calgary, Tel: (403) 296-7691; Media & general inquiries: Michelle Harries, Corporate Communications, Petro-Canada, Calgary, Tel: (403) 296-3648; To request a free copy of this organization's annual report, please go to http://www.newswire.ca/ and click on reports@cnw.

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