The Cruas Nuclear Power Station is a Nuclear power plant located in Cruas and Meysse communes, Ardèche next to the Rhône River in France. The site is 35km north of Tricastin Nuclear Power Center and near the town of Montélimar. The site contains 4 pressurized water reactors of 900 MW each, totaling 3600 MW total. The construction began in 1978, the reactors were built between 1983 and 1984. The power station accounts for 4 to 5% of the electric energy production in France, and 40% of the annual usage by the Rhone-Alps area. The site employs about 1,200 workers and has an area of 148 hectares. Cooling water comes from the Rhône river.