- Alstom - World's leading energy solutions and transport company.
- Areva - World's leading nuclear energy company.
- EDF - French leading energy company, active in all major electricity businesses.
- General Electric - Major industrial company.
- Iberdrola - Spanish private multinational electric utility company based in Bilbao.
- Mitsubishi - Japanese large industrial company.
- Veolia Environnement - Veolia Environnement is world leader in environmental services.
- Vinci - Numéro un mondial des concessions, de la construction et des services associés. World leader in concessions, contruction and related services.