According to the World Nuclear Association, as of April 2014, 31 countries derive some of their electrical power from nuclear energy. Furthermore, 56 countries have nuclear reactors dedicated to scientific research. All total there are 430 commercial power-generating nuclear plants, 240 research reactors and 180 nuclear power plants providing electricity for ships at sea.
As of March 2014, the one country that generates the most nuclear energy is the United States, with 100 active nuclear plants generating more than 770,000 gigawatt-hours of electricity and several more power stations under construction. This is in addition to the large number of nuclear-powered vessels in the U.S. Navy. France is the country with the second-highest number of nuclear reactors, with Russia, South Korea and Germany rounding out the list. France actually gets the largest percentage of its national electricity requirements from nuclear, with almost 75 percent of the country's electricity coming from fission sources. China, Canada, Ukraine, United Kingdom and Sweden round out the top 10 nuclear power countries, and many other European and Asian nations derive at least some of their electrical power from nuclear plants. All told, the world generated approximately 11 percent of its electricity from nuclear power in 2014.