- 9REN Group, Luxemburg – Solar developer
- AFC (Ansaldo Fuel Cells), Italy – High-tech manufacturing
- AMKA Onlus, Guatemala and Congo – Non-profit organization
- Ardian, France – Investment Company
- Ariya Capital, Guersey Island – commercial energy projects developer in Africa
- Bologna Business School, Italy – University
- City Parks Foundation, New York – Non-profit
- Contourglobal, USA – Energy utility
- DeBesiDiGiacomo, Italy, UK – Insurance broker
- Element Power, Spain – Renewable energy developer
- Enovos, Luxembourg – Energy utility
- ESI, Italy – Independent Solar Power Producer
- ERG Power & Gas, Italy – Oil company
- EF Solare, Italy – Energy utility
- Ergycon, Italy, Original Equipment Manufacturer (wind turbines)
- Atmos Holding, Italy – Venture Capital, clean tech
- First Reserve Corporation, USA – Private Equity
- Gemmo, Italy – electrical systems contractor, facility management and ESCO
- Govecs, Germany – Electric vehicle manufacturer
- GWM Greentech, Denmark – Independent Solar power poroducer
- Hudson Clean Energy Partners, Teaneck, NJ– Private Equity
- Intrauma, Italy – Orthopedic implants
- MARO Lavori, Italy – Asphalt mfr & road construction
- Millenium Partecipazioni, Italy – Investment fund
- Ministero dell’Ambiente, Italy – Government
- SBG SrL, Italy – Photovoltaic generator, rooftop
- SoloPower Corporation, San Jose, CA– High-tech manufacturing
- Sviluppo Umbria, Italy – Local development agency
- Vimar, Italy– Electrical socket and outlets