Independent Power Transmission Operator

KARELIA 

FIBRAN

ORGREZ

LAVEL

PORTO CARRAS

TUV AUSTRIA HELLAS

ALUMINIUM OF GREECE

PROTERGIA

HELLENIC COMPANY FOR ROLLING STOCK MAINTENANCE S.A

Hellenic Electricity Distribution Network Operator

EURICOM

Albarrie

GlobiLED

NOSTIRA

SEMAN