- Dobrich Municipality
- Union of Bulgarian Black Sea Local Authorities
- Syndicat Intercommunal d’Energies du Département de la Loire (SIEL), France
- Loirénergie, Agence Technique pour une Energie Respectueuse de l’Environnement
- Lokalna Energetska Agencija za Pomurje
- Regional Energy Agency of Värmland, Energikontor Värmland
- Black Sea Regional Agency for Energy Managment
- Bourgas Regional Agency for Energy Management
- ManagEnergy
- Municipal Energy Efficiency Network EcoEnergy
- Covenant of Mayors for Climate&Energy
- Energy Cities