8 partners from 7 countries worked together in the project. These partners were: 

• B.&S.U. Beratungs- und Service-Gesellschaft Umwelt mbH, Germany
• Berliner Energieagentur GmbH, Germany
• MOTIVA, Finland
• Ente per le Nouve Tecnologie l'Energia e l'Ambiente, ENEA, Italy
• Technological Building and Civil Engeneering Institute, ZRMK, Slovenia
• Building Research Establishment BRE, Great Britain
• Ente Público Regional de la Energia de Castilia y Léon EREN, Spain