The Division of Environmental and Energy System Studies is an interdisciplinary research group with roots from the “Environmental program” established at Lund University in 1969. The research began with critical energy systems studies in the 1970s of the then supply-oriented and fossil- and nuclear dominated energy systems in Sweden and the world. Today, we mainly do interdisciplinary energy systems research from both a technical and policy perspective with a focus on climate driven transitions. The research can be group into four main categories. From fossil to bio-based energy systems, the climate transition of energy-intensive industry and it´s role in the energy system, resource and security issues from a supply chain perspective and a climate transition, and studies of sustainable futures. The research is conducted by approximately 15 senior researchers and 10 PhD students.