Pengrowth Energy Trust announces Cash Distribution for October 15, 2004 Stock Symbol: (PGF.A/PGF.B) - TSX; (PGH) - NYSE CALGARY, Sept. 21 /PRNewswire-FirstCall/ -- Pengrowth Corporation ("Pengrowth"), administrator of Pengrowth Energy Trust ("Trust"), announced today that the cash distribution for October 15, 2004 will be Cdn $0.22 per trust unit. The distribution is net of amounts withheld to finance capital expenditures. Continued strength in commodity prices and the additional production associated with the Murphy acquisition have also allowed Pengrowth to implement an additional holdback for the benefit of unitholders. The ex-distribution date is September 28, 2004. The distribution will be payable to all unitholders who hold Class A or Class B trust units on the record date of September 30, 2004. The distribution of Cdn $0.22 per trust unit is equivalent to approximately U.S. $0.17 per trust unit using a U.S./Canadian dollar exchange ratio of 1.2878. The actual U.S. dollar equivalent distribution will be based upon the actual U.S./Canadian exchange rate applied on the payment date, net of applicable Canadian withholding taxes. This distribution relates to the production month of August, 2004 which represents the third full month of net revenue and cash flow from the Murphy acquisition. Cash distributions paid over the past 12 months now total Cdn $2.55 per trust unit or approximately U.S. $1.92 per trust unit. PENGROWTH CORPORATION James S. Kinnear, President DATASOURCE: Pengrowth Energy Trust CONTACT: please visit our website http://www.pengrowth.com/ or contact: Investor Relations, E-mail: , Telephone: (403) 233-0224, Toll Free: 1-800-223-4122, Facsimile: (403) 294-0051; Investor Relations, Toronto, Toll Free: 1-888-744-1111, Facsimile: (416) 362-8191

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