July 6, 2011

Duke Energy to Release Second Quarter 2011 Earnings Aug. 2

CHARLOTTE, N.C., July 6, 2011 /PRNewswire/ -- Duke Energy will release its second quarter 2011 earnings results at 7 a.m. ET on Tuesday, Aug. 2.

(Logo: http://photos.prnewswire.com/prnh/20040414/DUKEENERGYLOGO )

An earnings conference call for analysts is scheduled for 10 a.m. ET Tuesday, Aug. 2. The conference call can be accessed via the investors' section (http://www.duke-energy.com/investors/) of Duke Energy's website or by dialing 888-740-6144 in the United States or 913-312-0830 outside the United States. The confirmation code is 2708091. Please call in 10 to 15 minutes prior to the scheduled start time. A replay of the conference call will be available until 2 p.m. ET, Aug. 12, 2011, by calling 888-203-1112 in the United States or 719-457-0820 outside the United States and using the code 2708091. A replay and transcript also will be available by accessing the investors' section of the company's website.

Headquartered in Charlotte, N.C., Duke Energy is a Fortune 500 company traded on the New York Stock Exchange under the symbol DUK. More information about the company is available on the Internet at: www.duke-energy.com.

    Tom Shiel            704-382-2355
    24-Hour:             800-559-3853

    Stephen De May       704-382-2620
    Bill Currens         704-382-1603

SOURCE Duke Energy