The Main Campus of the Jožef Stefan Institute, located in Ljubljana, serves as the primary hub for multidisciplinary scientific research, encompassing physics, chemistry, biology, biotechnology, and information technologies. This campus hosts the majority of the institute's departments and centers, fostering groundbreaking research in basic and applied sciences. It supports advanced studies and training programs in cutting-edge fields, contributing significantly to Slovenia's scientific landscape.
The Reactor Infrastructure Centre (also known as Podgorica Reactor Centre) specializes in nuclear science and technology, operating the TRIGA Mark II research reactor. This satellite campus focuses on reactor physics, engineering, radiation safety, neutron studies, and radioactive waste management. It provides unique facilities for experimental nuclear research, training, and education in nuclear-related disciplines.