Duke Energy to Release Second Quarter 2010 Earnings Aug. 3

CHARLOTTE, N.C. - Duke Energy will release its second quarter 2010 earnings results at 7 a.m. ET on Tuesday, Aug. 3.

An earnings conference call for analysts is scheduled for 10 a.m. ET Tuesday, Aug. 3. The conference call can be accessed via the investors’ section (http://www.duke-energy.com/investors/) of Duke Energy’s Web site or by dialing 913-312-0645 outside the United States or 866-454-4209 in the United States. The confirmation code is 4865293. Please call in 10 to 15 minutes prior to the scheduled start time. A replay of the conference call will be available until midnight ET, Sept. 3, 2010, by calling 719-457-0820 outside the United States or 888-203-1112 in the United States, and using the code 4865293. A replay and transcript also will be available by accessing the investors’ section of the company’s Web site.

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.