BOISE, IDAHO--(Marketwire - Aug. 28, 2008) - 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.

FOR FURTHER INFORMATION PLEASE CONTACT:

U.S. Geothermal Inc.
Saf Dhillon
Investor Relations
1-866-687-7059
(604) 688-9895 (FAX)
Email: saf@usgeothermal.com
Website: www.usgeothermal.com


Scott Peyron & Associates, Inc.
Patrick Cusick

(208) 388-3800
(208) 388-8898 (FAX)
Email: pcusick@peyron.com