Gran Tierra Energy to Announce Fourth Quarter and Year End 2007 Results of Operations

    Company to Host Conference Call on March 14, 2008 at 10:00 a.m. Eastern

    CALGARY, Alberta, March 11 /CNW/ -- Gran Tierra Energy Inc. (TSX: GTE,
OTC Bulletin Board:   GTRE) today announced that the company's senior management
will discuss the company's results of operations for the fourth quarter and
year ended December 31, 2007 during a conference call scheduled for Friday,
March 14, 2008, at 10:00 a.m. Eastern Time.  The company's financial results
for the fourth quarter and year 2007 year end are scheduled to be released
earlier that day.

    What:              Gran Tierra Energy Inc.'s Fourth Quarter and Year End
                       2007 Results of Operations Conference Call

    When:              Friday, March 14, 2008, 10:00 a.m. Eastern

    Web cast address:,

    Dial-in Numbers:   (888) 680-0879 (domestic) or
                       (617) 213-4856 (international),
                       pass code # 45103243

    Contact:           Al Palombo, Cameron Associates,
                       (212) 245-8800 Ext. 209,
    Participants may pre-register for the call at:
    Pre-registrants will be issued a pin number to use when dialing into the
live call which will provide quick access to the conference by bypassing the
operator upon connection.
    If you are unable to participate, an audio replay of the call will be
available beginning two hours after the call and will be available until 11:59
p.m. on March 21, 2008, by dialing (888) 286-8010 (domestic) or (617) 801-6888
(international) using confirmation pass code 18215037. An audio replay of the
call will also be available on Gran Tierra Energy's web site,, until the next earnings call.
    About Gran Tierra Energy Inc.:
    Gran Tierra Energy Inc. is an international oil and gas exploration and
production company, headquartered in Calgary, Canada, incorporated in the
United States, trading on the Toronto Stock Exchange (GTE) and the OTC
Bulletin Board (GTRE), and operating in South America. The company holds
interests in producing and prospective properties in Argentina, Colombia and
Peru. The company has a strategy that focuses on establishing a portfolio of
producing properties, plus production enhancement and exploration
opportunities to provide a base for future growth. Additional information
concerning Gran Tierra Energy is available at Investor
inquiries may be directed to or 1-800-916-GTRE (4873).

For further information:

For further information: Dana Coffield, President & Chief Executive 
Officer of Gran Tierra Energy Inc., 1-800-916-4873,; or 
Al Palombo of Cameron Associates Investor Relations, +1-212-245-8800, Ext.
209,, for Gran Tierra Energy Inc. Web Site:

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Gran Tierra Energy Inc.

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