Three nuclear energy plants owned by Constellation Energy Nuclear Group (CENG) officially joined Exelon Generation's fleet of nuclear plants. The three CENG plants include five reactors capable of generating more than 4,200 MW at full power, they include: R.E. Ginna Nuclear Power Plant in Ontario, NY, a single 583-MW, Nine Mile Point Nuclear Station in Scriba, NY, 1,937 MW, Calvert Cliffs Nuclear Power Plant in Lusby, Md., 1,768 MW. Electricite de France (EDF) and Exelon remain co-owners of CENG, with Exelon owning 50.01 percent of CENG and EDF 49.99 percent. Exelon Corporation and Constellation Energy completed their merger on March 12, 2012.