| | Participant name | Participant short name | Country |
| 1 |
Berliner Energieagentur GmbH |
BE |
Germany |
| 2 |
B.&S.U. Beratungs- und Service-Gesellschaft Umwelt mbH |
B.&S.U. |
Germany |
| 3 |
O.Ö. Energiesparverband |
OÖ ESV |
Austria |
| 4 |
Motiva Oy |
MOTIVA |
Finland |
| 5 |
Ente per le Nuove Tecnologie, l’Energia e l’Ambiente |
ENEA |
Italy |
| 6 |
Building and Civil Engineering Institute ZRMK |
ZRMK |
Slovenia |
| 7 |
Efeko Ltd |
Efeko |
Finland |
| 8 |
Centre for Energy Efficiency |
EnEffect |
Bulgaria |
| 9 |
Ekodoma |
Ekodoma |
Latvia |
| 10 |
Budapest University of Technology and Economics |
BUTE |
Hungary |
| 11 |
Krajowa Agencja Poszanowania Energii |
KAPE |
Poland |
| 12 |
Centre for Environmental Studies Foundation |
CES |
Hungary |
