Oak Ridge National Laboratory (ORNL) is a science and technology national laboratory managed for the United States Department of Energy (DOE) by UT-Battelle. ORNL is the largest science and energy national laboratory in the Department of Energy system by size and by annual budget. ORNL conducts research and development activities in a variety of scientific and technical disciplines. ORNL's scientific programs focus on materials, neutron science, energy, high-performance computing, systems biology and national security. ORNL partners with other national laboratories, universities and industry to solve complex problems and transfer knowledge and technology. ORNL is home to several of the world's most powerful supercomputers, including Summit, the world's most powerful supercomputer as of November 2018.