Plug-n-Harvest is a 4-year project, funded by the EU’s Horizon 2020 program. The main strategic goal is to design, develop, demonstrate and exploit a new model for residential and non-residential buildings – which will be able to provide high energy use reductions and high energy harvesting from RES(Renewable Energy Sources) both at the single-building and the district scale. It wants to achieve this proposal requiring medium or low installation costs and almost zero operational costs.