EXCESS - FleXible user-CEntric Energy poSitive houseS – brings together 21 partners from 8 countries to showcase how nearly-zero energy buildings can be transformed into positive energy buildings. Funded by the EU Horizon 2020 research and innovation programme over a 4-year period, EXCESS will spearhead four innovative demonstration projects, introducing technical solutions that enable buildings to produce more renewable energy than they consume over the course of a year. By implementing demonstration projects that span across the Nordic, Continental, Oceanic and Mediterranean climate zones, EXCESS seeks to test, validate and share PEB solutions with potential replicability across Europe.