- Hellenic Association of Photovoltaic Companies
- Greek Association of RES Electricity Producers
- ENERGIA.gr
- Hellenic wind Energy Association
- Greenpeace
- Centre for Renewable Energy Sources (CRES)
- Regulatory Authority for Energy (RAE)
- Ministry of Development
- Hellenic Association for the Cogeneration of Heat and Power
- Greek Solar Industry Association
http://www.gsrt.gr/default.asp?V_ITEM_ID=15&V_LANG_ID=1
- Public Gas Corporation
- Hellenic Transmission System Operator S.A.
- National Centre for Environment & Sustainable Development
- Ministry for Environment, Physical Planning and Public Works