OGLETHORPE POWER THIRD QUARTER INVESTOR BRIEFING CALL TO BE HELD NOVEMBER 23

TUCKER, GA (November 18, 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 third quarter results during a conference call at 1:00 p.m. Eastern on Monday, November 23, 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: 866-383-8003

International Dial-in Number: 617-597-5330

Passcode: 54960037

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=2562088

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

OPC is the nation's largest power supply cooperative with approximately $6 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, OPC balances reliable 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 combined capacity of approximately 5,500 MW, as well as purchased power.  OPC was established in 1974 and is owned by its 38 member systems.  It is headquartered in Tucker, GA.