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News release via Canada NewsWire

Attention Business Editors:
Anterra changes date of Special and Annual Meeting of Shareholders

TSXV Symbol: AE.A
244,488,032 Class A Shares

CALGARY, June 21 /CNW/ – Anterra Energy Inc. (Anterra or the Company) advises that it has changed the date of the Special and Annual Meeting of Shareholders to Tuesday July 13, 2010 at 9.30 a.m. (Calgary time) from Thursday June 24, 2010. The meeting will be held at the same location, namely
at the office of Macleod Dixon LLP at 3700 Canterra Tower, 400, Third Avenue S.W., Calgary. There are no changes to the agenda of the meeting.

About Anterra Energy
Anterra Energy is an independent exploration, development and production company with an emerging focus on the use of advanced exploration technologies including 3-D imaging, horizontal drilling and multi-stage completions to systematically develop its portfolio of conventional and non-conventional oil and gas projects. Complementing this strong exploitation and development focus, the Company owns and operates fee-based midstream facilities in western Canada. Anterra is a public Canadian company listed on the TSXV under the symbol AE.A. More information about Anterra is available on the Company’s website at www.anterraenergy.com.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts
responsibility for the adequacy or accuracy of this release.

%SEDAR: 00025272E

/For further information: Owen C. Pinnell, Chairman and Chief Executive
Officer, Anterra Energy Inc., Telephone: (403) 215-2427, Facsimile: (403)
261-6601, E-mail: pinnello(at)anterraenergy.com; Bill Johnson, President and
Chief Operating Officer, Anterra Energy Inc., Telephone: (403) 215-2384,
Facsimile: (403) 261-6601, E-mail: johnsonb(at)anterraenergy.com/

(AE.A. AE.B.)
CO: Anterra Energy Inc.
CNW 17:19e 21-JUN-10

Filed under: 2010
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