Poul Alberg Østergaard is a professor in energy planning at the Department of Planning at Aalborg University. From a background in electrical engineering, Poul Alberg Østergaard went on to focus on energy systems from a more holistic perspective. Thus, his research is primarily focused on the scenarios for and simulations of future energy systems based highly on fluctuating renewable energy sources. He is involved in a number of Danish and international research projects on renewable energy systems including for instance SMILE on smart renewable energy islands, MUSE GRIDS on integrated energy systems, RE-INVEST on robust energy investment strategies for Denmark in a future renewable energy Europe and 4DH on 4th generation district heating systems. In addition, he is the programme director of the M.Sc. Eng. programme in Sustainable Energy Planning and Management at Aalborg University and has been involved in various other teaching and training activities notably energy systems analyses work-shops on three continents.