Plant Vogtle, a nuclear power plant in Waynesboro, Georgia, is the largest source of clean energy in the U.S. following the addition of two new reactors, according to Georgia Power.The plant's unit 4 reactor began commercial operations in April and unit 3 went online last year. They are the first reactors built from scratch and connected to the grid in over three decades and together can power over a million homes and businesses, according to the utility provider.But bringing a nuclear power plant to life i ...