CHARLOTTE, NC - JANUARY 10: The building that houses one of two Duke Energy headquarters is seen January 10, 2011 in Charlotte, North Carolina. Duke Energy announced plans to buy Progress Energy, ... more 
CHARLOTTE, NC - JANUARY 10: The building that houses one of two Duke Energy headquarters is seen January 10, 2011 in Charlotte, North Carolina. Duke Energy announced plans to buy Progress Energy, which is based in Raleigh, North Carolina. If the merger is approved, the combining of the two companies will create the country's largest electric utility and will provide power to over 7 million customers. (Photo by Davis Turner/Getty Images) less 
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Getty Images | Photo By Davis Turner / Getty Images
Mon, Jan 10, 2011 2:41 PM EST