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Duke Energy and county officials to test nuclear and hydro sirens July 9, 2013

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CHARLOTTE, N.C. -

Duke Energy will be testing nuclear sirens at the Catawba and McGuire nuclear stations and hydro plant sirens at Bridgewater, Rhodhiss and Mountain Island Lake. Residents near lakes Hickory, Lookout Shoals, Norman and Wylie also may hear these sirens. The tests will be conducted from 11:50 a.m. until noon on Wednesday, July 10.

No public action is required during these three-minute tests. By testing the sirens, state and county officials and Duke Energy ensure the sirens are operating properly. These siren tests are performed once each quarter.

Nuclear siren response
County emergency officials are responsible for sounding nuclear plant sirens. These sirens are a signal for residents to tune into a radio or TV station in their area that carries emergency alert messages. County officials use these stations to provide information to the public.

Hydro siren response
Sirens located at the hydro plants are used to warn of an impending dam failure. If the sirens are sounded in an actual event, residents living downstream of these facilities should evacuate immediately. Residents should be aware that Duke Energy does not sound sirens for high water events.

Catawba Nuclear Station, located in York, S.C., is owned jointly by North Carolina Municipal Power Agency Number 1, North Carolina Electric Membership Corp., Piedmont Municipal Power Agency and Duke Energy.

McGuire Nuclear Station, located in Huntersville, N.C., is owned by Duke Energy.

Duke Energy Carolinas owns nuclear, coal-fired, natural gas and hydroelectric generation. That diverse fuel mix provides approximately 20,000 megawatts of owned electric capacity to approximately 2.4 million customers in a 24,000-square-mile service area of North Carolina and South Carolina.

Duke Energy is the largest electric power holding company in the United States with more than $110 billion in total assets. Its regulated utility operations serve approximately 7.2 million electric customers located in six states in the Southeast and Midwest. Its commercial power and international business segments own and operate diverse power generation assets in North America and Latin America, including a growing portfolio of renewable energy assets in the United States.

Headquartered in Charlotte, N.C., Duke Energy is a Fortune 250 company traded on the New York Stock Exchange under the symbol DUK. More information about the company is available at: www.duke-energy.com

CONTACT: Duke Energy Media Line
24-Hour: 800-559-3853


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