Source: U.S. Geothermal Inc.

U.S. Geothermal Inc. Announces Voluntary Delisting from Toronto Stock Exchange

BOISE, IDAHO--(Marketwired - Dec. 10, 2015) - U.S. Geothermal Inc. (TSX:GTH)(NYSE MKT:HTM) (the "Company") announced today that it has applied for the voluntary delisting of the Company's securities from the Toronto Stock Exchange ("TSX"). It is expected to take effect as of the close of trading on Dec 31, 2015.

The Company's shares will continue to trade under its existing stock symbol "HTM" on the NYSE MKT LLC ("NYSE").

The decision to voluntarily delist from the TSX is due to the very limited trading volume of the Company's shares on the TSX over a sustained period, with more than 97% of trades in the Company's securities over the past 24 months occurring on the NYSE, and only 3% occurring on the TSX. As such, the Board considers that the regulatory and other costs (listing, compliance, etc.) of the Company in maintaining the additional TSX listing should not be continued.

"We are executing our growth strategy which is very focused on delivering value to our shareholders." said Dennis Gilles, CEO of US Geothermal. "We are also examining all costs and expenses and this is a prudent step which will favorably impact our bottom line."

Canadian shareholders will continue to trade their shares on the NYSE through Canadian broker-dealers who have U.S. registered broker-dealer affiliates.

Following delisting from the TSX, the Company intends to apply under Canadian securities laws for an order that it cease to be a reporting issuer in Canada. Until such order is granted, the Company will continue to comply with its applicable Canadian continuous reporting obligations.

About U.S. Geothermal Inc.:

U.S. Geothermal Inc. is a leading and profitable renewable energy company focused on the development, production and sale of electricity from geothermal energy. The company is currently operating geothermal power projects at: Neal Hot Springs, Oregon, San Emidio, Nevada and Raft River, Idaho for a total power generation of approximately 45 MWs. The company is also developing projects at: the Geysers, California; a second phase project at San Emidio, Nevada; the El Ceibillo project located near Guatemala City, Guatemala; and at Crescent Valley, Nevada. U.S. Geothermal's growth strategy is to reach 200 MWs of generation by 2020 through a combination of internal development and strategic acquisitions.

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

The information provided in this news release may contain forward-looking statements within the definition of the Safe Harbor provisions of the US Private Securities Litigation Reform Act of 1995. Readers are cautioned to review the risk factors identified by the company in its filings with the US and Canadian securities agencies. All statements, other than statements of historical fact, included herein, without limitation, statements relating to the future operating or financial performance of U.S. Geothermal, are forward-looking statements. Forward-looking statements are frequently, but not always, identified by words such as "expects", "anticipates", "believes", "intends", "estimates", "potential", "possible", and similar expressions, or statements that events, conditions, or results "will", "may", "could", or "should" occur or be achieved. These forward-looking statements may include statements regarding perceived merit of properties; interpretation of the results of well tests; project development; resource megawatt capacity; capital expenditures; timelines; strategic plans; or other statements that are not statements of fact. Forward-looking statements involve various risks and uncertainties. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from U.S. Geothermal's expectations include the uncertainties involving the availability of financing in the debt and capital markets; uncertainties involved in the interpretation of results of well tests; the need for cooperation of government agencies in the development and operation of properties; the need to obtain permits and governmental approvals; risks of construction; unexpected cost increases, which could include significant increases in estimated capital and operating costs; and other risks and uncertainties disclosed in U.S. Geothermal's Annual Report on Form 10-K for the year ended December 31, 2014 filed with the United States Securities and Exchange Commission and Canadian securities regulatory authorities and in other U.S. Geothermal reports and documents filed with applicable securities regulatory authorities from time to time. Forward-looking statements are based on management's expectations, beliefs and opinions on the date the statements are made. U.S. Geothermal Inc. assumes no obligation to update forward-looking statements if management's expectations, beliefs, or opinions, or other factors, should change.

The NYSE MKT and the TSX do not accept responsibility for the adequacy of this release.

Contact Information:

Saf Dhillon
Investor Relations
U.S. Geothermal Inc.
Tel: 866-687-7059
saf@usgeothermal.com