- Northern REB, led by VTT, (Teknologian tutkimuskeskus VTT Oy)
- Western REB, led by VITO (Vlaamse Instelling voor Technologisch Onderzoek N.V)
- Central REB, led by EASt (Energy Agency of Styria)
- Southwestern REB, led by CENER (National Renewable Energy Centre of Spain)
- Southeastern REB, led by CRES (Centre for Renewable Energy Sources and Saving)