Ringhals is a Swedish nuclear power plant with 4 reactors, one boiling water reactor (R1) and three pressurized water reactors (R2, R3 and R4). It is situated on the Värö Peninsula (Swedish: Väröhalvön) in Varberg Municipality approximately 60 km south of Gothenburg. With a total power rating of 3560 MWe, it is the largest power plant in Sweden and generates 24 TWh of electricity a year, the equivalent of 20% of the electrical power usage of Sweden.