Revised Webcast and Conference Call Date Great Plains Energy Fourth Quarter and Year-End 2008 Earnings Webcast and Conference Call Moved to February 11, 2009

In light of today’s announcements of Great Plains Energy’s fourth quarter and year-end 2008 earnings, revised 2009 earnings guidance and the declaration of a quarterly common stock dividend that is a 50 percent reduction from the prior quarterly amount, the previously scheduled call for Thursday, February 12, 2009 at 9:00 a.m. EST, has been moved. Great Plains Energy’s executive officers will now conduct a webcast and conference call to discuss these announcements on Wednesday, February 11, 2009 at 9:00 a.m. EST.

Stockholders, analysts and other interested parties can access the call by dialing 877-791-9323 (U.S./Canada) or 706-758-1332 (international) using pass code 82655211. The call will also be webcast and may be accessed in a listen-only mode on Great Plains Energy’s web site at www.greatplainsenergy.com.

If you are unable to participate during the call, a replay will be available on Great Plains Energy’s website for future review. You may also access the telephone replay by dialing 800-642-1687 (U.S./Canada) or 706-645-9291 (international) using pass code 82655211 through February 19, 2009.

ABOUT GREAT PLAINS ENERGY

Headquartered in Kansas City, Mo., Great Plains Energy Incorporated (NYSE: GXP) is the holding company of Kansas City Power & Light Company and KCP&L Greater Missouri Operations Company, two of the leading regulated providers of electricity in the Midwest. Kansas City Power & Light and KCP&L Greater Missouri Operations use KCP&L as a brand name. More information about the companies is available on the Internet at: www.greatplainsenergy.com or www.kcpl.com.