- AEGEK
- EVIESK
- AEG
- ALSTOM S.A.
- ATHENA AETEV
- AKTOR S.A.
- ARCHORODON S.A.
- BALLAUF
- VIOMEK
- GENERAL ELECTRIC
- EDAFOSTATIKI S.A.
- EMEK
- ENERGON HELLAS
- THEMELIODOMI S.A.
- MARBLES QUARRIES OF DIONYSOS – PENTELI
- MOTOR OIL
- SHIPBUILDING YARDS OF ELEUSINA – SKARAMAGKA
- NEG MICON
-NORDEX
- PANTECHNIKI S.A.
-TITAN
-HOCHTIEF AG
- J P
- METKA
- TERNA ENERGEIAKI S.A.
-AEG
-ABB
- SIEMENS
- CIMOLAI
- INTRAKOM
- ATHENS METRO
- EUKLEIDIS
- PETZETAKIS
- GEK
- CORINTH PIPEWORKS S.A.
- CRETAN PLASTICS S.A.
- WIND POWER PARKS
- CRETE’S DOMIKI
- HELLENIC TECHNODOMIKI
- ELDA
- TEMKA
- TERNA S.A.
- CHALKOR S.A.
- CHALIVOURGIKI
- VESTAS

- PPC
- JOINT ASSOCIATION OF THE ATHENS’ MUNICIPALITIES AND COMMUNITIES
- ERT
- OSE PROJECTS
- OTE
- MILITARY UNITS

See the customer list of the years 1967 – 1997

YEAR PLANT CONTRACTOR COMPANY
1961 THERMOELECTRIC PLANT PPC/ PTOLEMAIDA I ALSTHOM S.A.
1962 THERMOELECTRIC PLANT PPC/ PTOLEMAIDA II ALSTHOM S.A.
1962 LUBRICANTS PLANT UHDE CASALE
1964 REFINIRIES ESSO PAPPAS VARIOUS
1964 ETHYL HELLAS PETROCHEMICAL PLANT VARIOUS
1965 THERMOELECTRIC PLANT PPC/ KERATSINI ANSALDO
1967 THERMOELECTRIC PLANT PPC/ ALIVERI III ALSTHOM S.A.
1968 THERMOELECTRIC PLANT PPC/ ALIVERI IV ALSTHOM S.A.
1968 THERMOELECTRIC PLANT PPC/ MEGALOPOLI I, II K.W.U./ V.K.W./ AEG
1970 THERMOELECTRIC PLANT PPC/ LAVRIO I AEG - TELEFUNKEN
1971 THERMOELECTRIC PLANT PPC/ LAVRIO II ALSTHOM S.A.
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