September 5, 2008

Great Plains Energy (NYSE:GXP) Conference Call Advisory

Great Plains Energy Incorporated (NYSE: GXP):

 Who:  Terry Bassham, EVP - Finance & Strategic Development & CFO - Great Plains Energy Incorporated  Chris Giles, VP - Regulatory Affairs - Great Plains Energy Incorporated  When:  Tuesday, September 9, 2008, 1:00 p.m. CT / 2:00 p.m. ET  What:  Discuss the rate case increase requests in Missouri and Kansas  How To View:  1. Go to the Company's website:; 2. Click on the Webcast link on the home page; 3. If you have not previously accessed a Great Plains Energy webcast, provide the requested information on the registration page.  How To Listen:  1. Please dial toll-free 800-366-3908 or for international callers dial 303-262-2130 fifteen minutes prior to the call. 2. When ask, please reference access code 11119619.  A replay of the webcast will be available for 90 days following the conference call at the same website 

About The Companies:

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