Great Plains Energy Announces Fourth Quarter and Year-End 2009 Earnings Webcast and Conference Call

Great Plains Energy Incorporated (NYSE:GXP) announced today that it will release its 2009 fourth quarter / year-end earnings on Thursday, February 25, 2010, after the market close. On Friday, February 26, 2010, at 9:00 a.m. EST, the Company’s executive officers will conduct a webcast and conference call to discuss the Company’s results for 2009 fourth quarter and full-year earnings and operating results. To access supplemental financial information and the earnings webcast presentation for the call, please visit the Great Plains Energy website at www.greatplainsenergy.com. The information will be available in the Upcoming Events section on the main page after market close on February 25.

Stockholders, analysts and other interested parties can access the earnings call by dialing (877) 791-9323 (U.S./Canada) or (706) 758-1332 (international) using pass code 50890800. The call will also be webcast and can be accessed in a listen-only mode on Great Plains Energy’s website at www.greatplainsenergy.com. A replay of the webcast will be available on Great Plains Energy’s website and also telephonically through March 5, 2010 at (800) 642-1687 (U.S./Canada) or (706) 645-9291 (international), pass code 27038770.

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.