The conference is organized by Aalborg University and Energy Cluster Denmark with the aim to establish a venue for presenting and discussing scientific findings and industrial experiences related to the subject of Smart Energy Systems – including renewable energy, 4th Generation District Heating Technologies and Systems (4GDH), electrification of heating and transport sectors, electrofuels and energy efficiency. This 8th conference in the series cements it as a main venue for presentations and fruitful debates on subjects that are pertinent to the development and implementation of smart energy systems to fulfil national and international objectives.