General Secretariat of the Goverment – Department of Sustainable Development Ministry of Environment, Waters and Forests National Institute for Research and Development in Construction, Urban Planning and Sustainable Spatial Development “URBAN-INCERC” National Research and Development Institute for Soil Science, Agrochemistry and Environment Bucharest (ICPA) Dep. of Wetland Ecology, Institute for Geography and Geoecology, Karlsruhe Institute of Technology – KIT Regional Energy Agency North Da-Di-Werk Gebäudemanagement HELLENIC PASSIVE HOUSE INSTITUTE National and Kapodistrian University of Athens CYPRUS ENERGY AGENCY (CEA)