The Japan Atomic Energy Agency (JAEA) is a government research institution responsible for nuclear energy research and development. It was formed in 2005 from the merger of Japan's two major nuclear research institutions. JAEA conducts research on nuclear fusion in the JT-60SA and J-PARC facilities, as well as developing fast breeder reactors and high-temperature gas-cooled reactors. It also works on nuclear fuel cycle technologies and manages Japan's nuclear fuel recycling program. JAEA has over 4,000 employees across several domestic sites and works to help achieve a sustainable nuclear energy supply for Japan.