Great Plains Energy (NYSE: GXP) announced today that it will release its 2015 second quarter earnings on Thursday, August 6, 2015, after the market close. On Friday, August 7, 2015, at 9:00 a.m. EDT, executive officers of the Company will conduct a webcast and conference call to discuss the Company’s 2015 second quarter earnings and operating results. Supplemental financial information and the earnings webcast presentation will be available after the August 6 market close and after 8:30 a.m. EDT on August 7, respectively, on the Great Plains Energy website at www.greatplainsenergy.com.

Stockholders, analysts and other interested parties may access the earnings call by dialing (888) 353-7071 (U.S./Canada) or (724) 498-4416 (international) using pass code 61888902. A replay of the webcast will be available on Great Plains Energy’s website and telephonically through August 14, 2015, at (855) 859-2056 (U.S./Canada) or (404) 537-3406 (international), pass code 61888902.

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 Company and KCP&L Greater Missouri Operations Company 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.