Great Plains Energy Announces First Quarter 2009 Results Webcast and Conference Call

Great Plains Energy Incorporated (NYSE:GXP) announced today that it will release its 2009 first quarter results on Monday, May 11, 2009, after the market close. On Tuesday, May 12, 2009, at 8:00 a.m. EDT, the Company’s executive officers will conduct a webcast and conference call to discuss the Company’s financial and operating results for the 2009 first quarter.

Beginning this quarter, Great Plains Energy will release its results concurrently with its 10-Q or 10-K filings. This approach will enable management to discuss and address investor questions on both documents on the results webcast and conference call.

Stockholders, analysts and other interested parties can access the first quarter 2009 call by dialing 877-791-9323 (U.S./Canada) or 706-758-1332 (international) using pass code 96114208. The call will also be webcast and can 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 96114208 through May 14, 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.