Duke Energy's nuclear fleet provides electricity to approximately half of the utility's customers in the Carolinas. The 2,538-MW Oconee Nuclear Station is part of that fleet and has been a pacesetter among U.S. nuclear plants since it began operation in 1973. In order to maintain the plant's productivity and reliability, its staff implemented a comprehensive controls modernization project that spanned a decade. With its new state-of-the-art upgrades, the facility has become a leader in applying digital electronic technology in the nuclear power industry.