BOISE, IDAHO -- (Marketwire) -- 08/28/08 -- U.S. Geothermal Inc. (TSX: GTH)(AMEX: HTM) will host a telephone conference call for investors and analysts on Thursday September 4th at 4:30 p.m. EDT (2:30 p.m. MDT) to discuss 1st Quarter 2008 Financials, which were filed on August 08, 2008.

The conference call may be accessed by dialing 866-585-6398 in Canada and the United States, or 416-849-9626 internationally. A simultaneous webcast of the conference call will be provided through http://www.investorcalendar.com/IC/CEPage.asp?ID=133558.

U.S. Geothermal Inc., a renewable energy company focused on the production of electricity from geothermal energy, owns and operates geothermal power plants at Raft River, Idaho and San Emidio, Nevada, is drilling a new production well at San Emidio, Nevada, and has recently drilled a successful production well at Neal Hot Springs in eastern Oregon where additional new geophysical work is currently taking place.

Please visit our Website at: www.usgeothermal.com.