Duke-American Transmission Co.

We bring together the strengths of two leading electric industry companies to build, own and operate new electric transmission facilities throughout North America.

Zephyr Power Transmission to seek EIS contractor

CHARLOTTE, N.C. – Zephyr Power Transmission, LLC (“Zephyr”) will be soliciting bids from potential contractors to prepare an Environmental Impact Study at the direction of the Bureau of Land Management in response to a right of way application for the Zephyr Power Transmission Project. Interested parties should contact Zephyr by email prior to January 1, 2013.

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About DATC

Duke-American Transmission Co. is a transmission developer equally owned by Duke Energy and American Transmission Co. DATC was formed in 2011 to plan and develop strategic transmission projects across the U.S. and Canada. For more information, visit: www.datcllc.com.

About Duke Energy

Duke Energy is the largest electric power holding companies in the United States. Its regulated utility operations serve approximately 7.1 million customers located in six states in the Southeast and Midwest, with approximately 32,000 miles of line. 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 and transmission projects 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.

About American Transmission Company

American Transmission Co. is a Wisconsin-based company that owns and operates the electric transmission system in portions of the Upper Midwest. Formed in 2001 as the nation’s first multi-state transmission-only utility, ATC has invested $2.8 billion to improve the adequacy and reliability of its infrastructure. ATC now is a $3.3 billion company with 9,480 miles of transmission lines and 529 substations. The company is a member of the Midwest ISO regional transmission organization, and provides nondiscriminatory service to all customers, supporting effective competition in energy markets without favoring any market participant. For more information, visit atcllc.com.