Progress Energy, headquartered in Raleigh, North Carolina, is a subsidiary of Duke Energy and prior to its merger with Duke Energy was a Fortune 500 energy company with more than 21,000 megawatts of generation capacity and $9 billion in annual revenues. Progress Energy includes two major electric utilities that serve approximately 3.1 million customers in the Carolinas and Florida. As an independent company, the last chairman and CEO of Progress Energy was William D.