- A-plus
- Arcadis
- AvEPA
- CCS Energie-advies
- CE Delft
- Ceelie Management Consultants
- CLD energie management
- Connerga B.V.
- Drenthe + Vinke
- DWA
- E-ck advies
- Effectual
- Energiefocus
- Energiesparen
- Energy consulting
- Energy Experts International
- Entel
- EPA - Eneco
- EPA - energieprestatieadvies
- EPA Professionals
- Exergie
- GEN Group
- Groen adviesbureau
- Intechno
- INTEGeR consult (
- KEMA consulting
- Meijer Energiemanagement
- Slowenergy
- Waterontharder
- Wooninspiratie