Last date for submission of paper: unknown; Contact person: ESCC Director; It will take place on Skiathos Island, Greece, on June 1-3, 2020, under the auspices of the University of Florida, the University of Thessaly, the Rutgers University, the Cyprus University of Technology and BRNO University of Technology. The conference aims on bringing together leading experts in the fields of Energy, Sustainability and Climate Change as well as optimization and computational methods to discuss recent advancements and trending topics.