EDI has a large client base, comprised of various national and international companies, governments and academic institutes, e.g.:

• Accenture
• Aldel (a major producer of aluminium in the Netherlands)
• Atos Origin
• Baker Hughes
• Borovsky Institute
• Boston Consulting
• Dutch Ministry of Economic Affairs
• Dutch Ministry of Foreign Affairs
• Energy Development Partners
• E.on Ruhrgas
• Electrabel
• Eneco Energie
• Essent
• Foundation JIN (Joint Implementation Network)
• GasTerra (formerly Gasunie Trade & Supply B.V.)
• Gazprom
• GDF Suez
• Group Deloitte
• International Gas Union
• NAM
• N.V. Nederlandse Gasunie
• Nogepa
• Nuon
• Oxxio
• Petrobras
• Petronas
• RWE
• Saudi Aramco
• Shell
• StatoilHydro
• Stork
• TNK BP
• Wingas
• University of Groningen