RALEIGH, N.C. -- Progress Energy officials say more customers and a higher demand for power are pushing the need for a new nuclear reactor that could be built at its existing Shearon Harris nuclear plant about 20 miles southwest of Raleigh. The energy company, which serves 1.4 million customers in the Carolinas, said it chose Shearon Harris after evaluating 13 potential locations in North Carolina and South Carolina, based on its available transmission lines and proximity to cooling water. The Harris Plant site was originally planned for four nuclear reactors, but due to changing economic conditions in the 1970s and...