Public bodies
- MUNICIPALITY OF DIKAIOU, KOS
- MUNICIPALITY OF TILOS
- MUNICIPALITY OF XILOKASTRO
- PREFECTURE OF ARTA
- PREFECTURE OF EVIA
- PREFECTURE OF ILEIA
- PREFECTURE OF PREVEZA
- PREFECTURE OF THESPROTIA
- MINISTRY OF AGRICULTURE, NATURAL RESOURCES AND ENVIRONMENT, DEPARTMENT OF ENVIRONMENT, CYPRUS
- MINISTRY OF RURAL DEVELOPMENT AND FOOD
- MINISTRY OF THE ENVIRONMENT, PLANNING AND PUBLIC WORKS – GENERAL SECRETARIAT OF PUBLIC WORKS (NOW MINISTRY OF THE ENVIRONMENT, ENERGY AND CLIMATE CHANGE)
- PPC RENEWABLES S.A.
- REGION OF EPIRUS
- REGION OF CRETE
- REGION OF PELOPONNESE
- EPHORATE OF CONTEMPORARY AND MODERN MONUMENTS OF ATTICA, MINISTRY OF CULTURE
Private companies
- PIRAEUS BANK
- AIOLIAN DEVELOPMENT S.A.
- ANEMOPYLI S.A.
- ANEMOS MANIS S.A.
- CENTIMI S.A.
- C. ROKAS S.A. / ROKAS RENEWABLES S.A.
- DAMCO ENERGY S.A.
- DIETHNIS CONSTRUCTION ATTNE
- EDRASIS – C. PSALLIDAS S.A.
- ELIKA S.A.
- GAMESA ENERGY HELLAS S.A.
- JOINT MANAGEMENT VENTURE OF AMVRAKIKOS BAY ENVIRONMENT
- JOINT MANAGEMENT VENTURE OF AMVRAKIKOS BAY AQUATIC RESOURCES
- KARRE PROJECTS S.A.
- L & G GEORGOPOULOS & CO
- OSTRIA ENERGY S.A.
- RETD S.A.
- SOFIOS CONSULTING ENGINEERS S.A.
- SPRIDER ENERGY S.A.
- TERNA ENERGY S.A.
- TRITON ENERGY S.A.
- UNIGEA HELLAS LTD
- VENTAVEL ENERGY LTD
- VOLTERA S.A.
- WINDWAERTS HELLAS SA
- ZEPHYROS LTD
- Z & A – P. ANTONAROPOULOS AND ASSOCIATES S.A.
Companies of the wider public sector
- FORESTRY DEPARTMENT OF CHANIAEVOIA DEVELOPMENT AGENCY S.S.
- GREVENA DEVELOPMENT AGENCY
- HELLENIC RAILWAYS ORGANISATION S.A.
- RESEARCH COMMITTEE, UNIVERSITY OF IOANNINA
- EPIRUS S.A.
- MANAGING BODY OF PAMVOTIDA LAKE OF IOANNINA
- MANAGING BODY OF THE STRAITS AND ESTUARY OF RIVERS ACHERONTAS AND KALAMAS
- MANAGING BODY OF EVROS DELTA
- MANAGING BODY OF SAMARIA NATIONAL PARK
- MANAGING BODY OF KARPATHOS AND SARIA