OGLETHORPE POWER SECOND QUARTER INVESTOR BRIEFING CALL TO BE HELD AUGUST 18

TUCKER, GA (August 13, 2009) – Oglethorpe Power Corporation President and Chief Executive Officer Thomas A. Smith and Executive Vice President and Chief Financial Officer Elizabeth B. Higgins will discuss second quarter results during a conference call at 11:30 a.m. Eastern on Tuesday, August 18, 2009.  Investors, media and the public may view a live internet webcast or join via telephone.

How to Participate:

Joining Via Telephone:

Domestic Toll-Free Dial-in Number:  866-713-8395

International Dial-in Number:  617-597-5309

Passcode:  95763937

Joining Via the Internet:

Please navigate to the following web address to view the webcast:

http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=228245&eventID=2381362         

Instructions on how to submit questions will be provided during the call.  If you have additional questions, please contact Thomas J. Brendiar, Oglethorpe's Director of Bank and Investor Relations at 770-270-7173.

A replay of the webcast will be accessible from the company's website www.opc.com following the webcast (click on “About Us”, then click on “Investor Relations”).

About Oglethorpe Power

Oglethorpe Power Corporation is the nation's largest power supply cooperative with approximately $5 billion in assets serving 38 Electric Membership Corporations which, collectively, provide electricity to 4.1 million Georgia citizens. A proponent of conscientious energy development and use, Oglethorpe Power balances reliable and affordable energy with environmental responsibility and has an outstanding record of regulatory compliance.  Its diverse energy portfolio includes natural gas, hydroelectric, coal and nuclear generating plants with a combined capacity of approximately 5,200 megawatts (MW), as well as purchased power.  Oglethorpe Power was established in 1974 and is owned by its 38 Member Systems.  It is headquartered in Tucker, Georgia, in the Atlanta metropolitan area.