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.

DATC to purchase interest in California’s Path 15 transmission line

CHARLOTTE, N.C. – Duke-American Transmission Co. (DATC) has reached an agreement to purchase Atlantic Power Corporation’s interest in the Path 15 transmission project, an existing 84-mile, 500-kilovolt transmission line in central California.

“Path 15, which connects the transmission grids between northern and southern California, plays an important role in maintaining regional electric system reliability and market efficiency,” said Phil Grigsby, president, DATC. “Path 15 was a ground-breaking project that launched the competitive transmission industry by using private capital to fund much-needed new transmission infrastructure, and we’re excited to be a part of that legacy.”

Path 15 has had a strong operating track record since it was placed into service in 2004. It is fully integrated into the California Independent System Operator (CAISO) grid. With a capacity of approximately 1,500 megawatts of power, the line provides access to several California load centers.

Under the terms of the agreement, DATC will acquire a 72 percent interest in the Path 15 transmission line. Pacific Gas & Electric has an 18 percent interest through its ownership and operation of the connecting Los Banos and Gates substations. The remaining 10 percent interest in Path 15 is owned by Western Area Power Administration, which will continue to operate and maintain the line.

“This purchase is an important step forward for DATC,” said John Flynn of the DATC board of managers.  “We formed DATC to acquire and build strong, strategic projects that would position us to be leaders in the commercial transmission business – this is one of those opportunities.”

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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.