X-Energy, Inc. engages in designing nuclear reactor technology and manufacturing nuclear fuels primarily in United States, Canada, and the United Kingdom. The company's flagship product, Xe-100, a high temperature gas-cooled reactor is designed to generate 80 megawatts of electric power or 200 megawatts of thermal output (heat), or a combination. It is also developing TRISO-X fuel and other microreactor technologies. X-Energy, Inc. was founded in 2009 and is headquartered in Rockville, Maryland.