PrimeWest Energy Trust Announces Securityholder Approval of Arrangement With TAQA

CALGARY, ALBERTA--(Marketwire - Nov. 21, 2007) - PrimeWest Energy Trust ("PrimeWest") (TSX:PWI.UN) (TSX:PWX) (TSX:PWI.DB.A) (TSX:PWI.DB.B) (TSX:PWI.DB.C) (NYSE:PWI) announces that at a special meeting of Securityholders held earlier today, over 95% of the voting Securityholders voted in favour of the arrangement (the "Arrangement") which provides for the acquisition by 1350849 Alberta Ltd. ("Purchaser") a wholly-owned subsidiary of Abu Dhabi National Energy Company PJSC ("TAQA"), of all of the issued and outstanding securities of PrimeWest for a cash consideration equivalent to C$26.75 per Trust Unit. Application will be made to the Court of Queen's Bench tomorrow for a final order approving the Arrangement.

PrimeWest is a Calgary-based conventional oil and gas royalty trust that actively acquires, develops, produces and sells natural gas, crude oil and natural gas liquids for the generation of monthly cash distributions to Unitholders. Trust Units of PrimeWest trade on the Toronto Stock Exchange (TSX) under the symbol "PWI.UN" and on the New York Stock Exchange under the symbol "PWI". Exchangeable Shares of PrimeWest Energy Inc. trade on the TSX under the symbol "PWX". Series I Convertible Debentures of PrimeWest trade on the TSX under the symbol "PWI.DB.A", Series II Convertible Debentures trade under the symbol "PWI.DB.B" and Series III Convertible Debentures trade under the symbol "PWI.DB.C".