- Ministerul Energiei
- Ministerul Economiei, Comertului si Mediului de Afaceri
- Ministerul Finantelor Publice
- Ministerul Mediului si Padurilor
- European Petroleum Industry Association
- Asociacion Espagnola de Operadores de Productos Petroliferos – AOP
- Associação Portuguesa de Empresas Petrolifera
- Bulgarian Petroleum and Gas Association
- Ceska asociace petrolejarskeho prumyslu a obchodu – CAPPO
- Erdöl-Vereinigung – EV
- Estonian Oil Association
- Fachverband der Mineralölindustrie Österreichs
- Fédération Pétrolière Belge – Belgische Petroleum Federatie – FPB-BPF
- Finnish Oil and Gas Federation
- Groupement Pétrolier Luxembourgeois
- Hellenic Petroleum Marketing Companies Association – SEEPE
- Irish Petroleum Industry Association – IPIA
- Latvian fuel Traders Association
- Magyar Ásvãnyolaj Szövetseg
- Mineralölwirtschaftsverband – MWV
- Netherlands Oil Industry Association – VNPI
- Norsk Petroleumsinstitutt
- Polska Organizacja Przemystu i Handlu Naftowego
- Slovenská asociácia petrolejárskeho priemyslu a obchodu
- Svenka Petroleum Institutet – SPI
- Union Française des Industries Petrolières – UFIP
- Unione Petrolifera
- UK Petroleum Industry Association – UKPIA
