VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 01/08/10 -- Sierra Geothermal Power Corp. ("Sierra" or the "Company" or "SGP") Concerned Shareholder invites its fellow shareholders to attend a conference call on Monday, January 11, 2010 at 11:00 a.m. PST / 2:00 p.m. EST to discuss its Proxy Circular in advance of the Company's Special Meeting of Shareholders ("Meeting"). During the call, the Concerned Shareholder will address how shareholders' investments in the Company are at risk and why additions to strengthen Sierra's Board are required. Shareholders are invited to submit any questions they may have ahead of time to jshaffer@kingsdalecommunications.com. Attendees to the call will be in listen-only mode during the conference call.

The call will be hosted by Mr. Rick Rule, President of Resource Capital Investments Corp., General Partner to Exploration Capital Partners 2005 Limited Partnership and Mr. Murray Sinclair, Concerned Shareholder Director Nominee, who will present the Concerned Shareholder rationale behind requisitioning the Meeting and outline the many important reasons why Sierra's shareholders should support the Concerned Shareholder by voting their YELLOW proxy.

The dial-in numbers for the call are:

Toll-free number (US/Canada): 1-800-319-4610

Toll number (US/Canada): 604-638-5340

Shareholder questions should be submitted prior to the call to jshaffer@kingsdalecommunications.com

Taped Replay

A taped replay will be available to listeners following the call until January 26, 2010. To access the replay, please dial toll-free number (US/Canada): 1-800-319-6413 or toll number (US/Canada): 604-638-9010 and enter the Access code 5728.

Proxy Voting Deadline

Shareholders are reminded to not delay and vote the YELLOW proxy form so that it can be received no later than 5:00 p.m. (Vancouver Time) on Thursday, January 21, 2010. Detailed voting instructions are included in the Concerned Shareholder Proxy Circular that is being distributed to Sierra's shareholders.

Further information about voting the YELLOW proxy is available from Kingsdale Shareholder Services at 1-800-775-4067 or by visiting www.YourSierra.com.

About the Concerned Shareholder

The Concerned Shareholder is Exploration Capital Partners 2005 Limited Partnership ("Exploration"). Exploration and Rick Rule, President of Resource Capital Investments Corp., General Partner to Exploration, are among the largest and most experienced investors in the small to mid-cap geothermal space. The Concerned Shareholder holds 6,927,019 shares or approximately 5.40% of Sierra's issued and outstanding shares as of the Record Date.