The following is the list of IENE's current corporate membership.
COMPANY/ORGANIZATION NAME
- AERS (Energy Agency of the Republic of Serbia)
- AES Corporation
- ASPROFOS
- ATHENS INTERNATIONAL AIRPORT
- ATHEX GROUP
- BANK OF GREECE
- BLUE GRID GAS & POWER SA
- CORAL A.E.
- CORINTH PIPEWORKS
- DAPEEP
- DEDA
- DELOITTE BUSINESS SOLUTIONS ΑΕ
- DEPA COMMERCIAL (DEPA)
- DNV ΕΛΛΑΣ ΜΟΝΟΠΡΟΣΩΠΗ ΑΕ
- E3M
- EDA ATTIKIS SA
- EDF EN HELLAS A.E.
- ELECRIP HELLAS IKE
- ELECTRICITY AUTHORUTY OF CYPRUS
- ELINOIL
- ELPEDISON ΕΝΕΡΓΕΙΑΚΗ Α.Ε.
- ELVAL SA
- EMI
- EMTECH ΔΙΑΣΤΗΜΙΚΗ ΜΟΝ. ΙΚΕ
- ENEL GREEN POWER HELLAS A.E.
- ENERGEAN OIL & GAS
- ENERTA
- ENEX
- ENSCO AE
- ENTEKA SA
- EPIAS (Enerji Piyasaları İşletme A.Ş)
- EPS -PE Electric Power Industry of Serbia
- EREN Hellas SA
- EUNICE TRADING MAE
- EUROASIA INTERCONNECTOR
- EUROBANK
- EVDITI
- EVIKEN
- EYDAP
- GASTRADE SA
- GOLDECO A.E.
- GRANT THORTON
- GREEN TOP ENERGY
- HELLENIC CABLES
- HELLENIC ELECTRICITY DISTRIBUTION NETWORK OPERATOR S.A. (HEDNO)
- HELLENIC GAS TRANSMISSION SYSTEM OPERATOR S.A. (DESFA)
- HELLENIC HALYVOURGIA S.A.
- HELLENiQ ENERGY
- HEREMA
- HERON
- HITACHI ENERGY SA
- IPTO
- ITA SA
- KYRIAKIDES GEORGOPOULOS LAW FIRM
- LDK Consultants
- McKINSEY
- MESSARITIS RENEWABLES LTD
- MICHANIKI SA
- MOTOROIL
- MYTILINEOS SA
- NATIONAL BANK OF GREECE
- NAVRIDIS ASSOCIATES LAW FIRM
- NIS
- NORTON ROSE FULBRIGHT GREECE
- OLYMPIA GROUP SA
- ONE-CYCLE CONTROL, INC
- PIRAEUS BANK
- PHOTOS PHOTIADES GROUP Ltd
- PPC GROUP
- PPC RENEWABLES
- PROMETHEUS GAS
- PWC
- REGULATORY AUTHORITY FOR ENERGY (RAE)
- ROEC
- SGS GREECE SA
- SRIBJAGAS
- TAP (Trans Adriatic Pipeline AG)
- TEMPORARY WORKS DESIGN GREECE Μ.I.K.E. (TWD)
- TERNA ENERGY
- TRITOXO PROJECT MANAGEMENT
- VOLTON
- VSB RENEWABLE ENERGY HELLAS Ε.Π.Ε.
- ZENITH