CALGARY, Canada, February 14, 2008 - Gran Tierra Energy Inc. (OTC BB: GTRE), a company focused on oil exploration and production in South America, today announced that its application has been granted for the original listing of its common shares on the Toronto Stock Exchange ("TSX"). The common shares of Gran Tierra Energy will be listed and posted for trading under the symbol "GTE" on Tuesday, February 19, 2008.

"A listing on the Toronto Stock Exchange represents a significant milestone for Gran Tierra Energy, our shareholders, and our employees. We take great pride in this accomplishment which is one more step in the building of a solid foundation upon which we can continue to grow our business", commented Dana Coffield, President and Chief Executive Officer of Gran Tierra Energy. "We expect this listing will provide the opportunity to create greater visibility for "GTE," broaden our investor base, and potentially create additional liquidity for our shareholders. In the United States, the company's shares will continue to trade on the OTC Bulletin Board under the symbol "GTRE."

About Gran Tierra Energy, Inc.:

Gran Tierra Energy Inc. is an international oil and gas exploration and production company, headquartered in Calgary, Canada, incorporated and traded in the United States and operating in South America. Gran Tierra Energy holds interests in producing and prospective properties in Argentina, Colombia and Peru. The company's strategy is focused on establishing a portfolio of drilling opportunities to exploit undeveloped reserves to grow production, as well as undertaking exploration to grow future reserves. Additional information concerning Gran Tierra Energy is available at www.grantierra.com. Investor inquiries may be directed to [email protected] or 1-800-916-GTRE (4873).