Great Plains Gains Ground with 2007 Year-End Reserves

Great Plains Exploration Inc. provided the following summary information from its annual independent reserve evaluation completed by GLJ Petroleum Consultants Ltd. (GLJ), as at December 31, 2007. These estimates were prepared in accordance with National Instrument 51-101 Standards of Disclosure of Oil and Gas Activities.

The highlights of the reserves (based on forecast prices and costs) included total proved plus probable reserves of 4.0 million barrels of oil equivalent; approximately 57 percent are crude oil and natural gas liquids and 43 percent are natural gas; proved producing reserves represent 73 percent of total proved reserves; Great Plains increased its reserve values three percent, with reserve volumes only 13 percent lower compared to the prior year, of which 8 percent is the net result of strategic non-core asset sales over the last year; and Great Plains significantly increased reserves in its core area at Randell, and added initial reserves from recent drilling successes in Pembina/Crossfire and Morinville.