Indicative Projects
- EIA and Appropriate Assessment (AA) for the new underground–submarine HVDC transmission line (up to ±525 kV DC) between the new Thesprotia Substation and Galatina Substation (Italy) for the new Greece–Italy interconnection, with an estimated route length of 165–240 km, including 25 km within Natura 2000 Special Areas of Conservation (SACs) (ADMIE S.A., 2025).
- Appropriate Assessment (Category A1) for the 150 kV submarine transmission line across the Makronisos Strait, interconnecting the wind farm cluster on Kythnos Island with the Hellenic Transmission System at Lavrio, total length 9.7 km (Aiolos Kritis S.A., 2022, 2025).
- Appropriate Assessment for the 150 kV transmission line between the South Rhodes Substation and the Karpathos Substation, comprising 58 km of submarine cable, 3.8 km of underground cable on Rhodes, and 47.4 km of underground cable on Karpathos (ADMIE S.A., 2025).
- EIA and Appropriate Assessment for the 150 kV transmission line on Menikio Mountain, approximately 30 km long, including a 33/150 kV Substation and a 150/400 kV Extra High Voltage Substation (GIS/KYT) (Category A2), within the Municipalities of Amfipoli, Nea Zichni, Emmanouil Pappas (Serres Regional Unit) and Prosotsani (Drama Regional Unit) (MAGNA ENERGIA S.A., 2024).
- Appropriate Assessment for the 150 kV submarine transmission line between Chios and Lesvos, approximately 90 km long (ADMIE S.A., 2024).
- Appropriate Assessment for the 150 kV submarine transmission line between Samos and Mastichari (Kos), approximately 102 km long (ADMIE S.A., 2024).
- Appropriate Assessment for the 150 kV overhead transmission line between the Lesvos Interconnection Substation and the Lesvos Substation, comprising 37.6 km of overhead line and 4.6 km of underground cable ADMIE S.A., 2024, 2026).
- EIA and Appropriate Assessment (Category A1) for the new 150 kV Chania–Damasta transmission line, with a total length of 101.3 km (ADMIE S.A., 2025).
- Appropriate Assessment (Category A1) for the new 400 kV overhead transmission line between Nea Santa EHV Substation and Filippoi EHV Substation (400 kV Nea Santa–Filippoi Transmission Line II), with a total length of 138 km (ADMIE S.A., 2024).
- EIA for the 150 kV transmission line on Menikio Mountain, approximately 30 km long, including a 33/150 kV Substation and a 150/400 kV Extra High Voltage Substation (Category A2), within the Municipalities of Amfipoli, Nea Zichni, Emmanouil Pappas (Serres Regional Unit) and Prosotsani (Drama Regional Unit) (MAGNA ENERGIA S.A., 2024).
- Appropriate Assessment for the undergrounding and route deviation of a section of the existing 150 kV Nea Moudania–Kassandra transmission line (ADMIE S.A., 2023).
- Appropriate Assessment for the 150 kV submarine transmission line between Zakynthos and Kefalonia, approximately 20 km long (ADMIE S.A., 2022)
- Appropriate Assessment for the 400 kV grid connection transmission lines of the 900 MW Larissa Combined Cycle Natural Gas Power Plant, located within the Larissa Industrial Area, connecting the plant to the Hellenic Electricity Transmission System (HETS) (Larissa Thermoelectriki S.A., 2022).
- EIA and Appropriate Assessment for a new 400 kV interconnection transmission line and a 33/400 kV Extra High Voltage Substation, within the Municipalities of Xiromero, Aktio–Vonitsa, and Amfilochia (Aetolia-Acarnania Regional Unit) (Rokas S.A., 2021).
- EIA and Appropriate Assessment (Category A1) for the Crete–Attica Electrical Interconnection via High Voltage Direct Current (HVDC), consisting of an underground, submarine and overhead HVDC cable system, including ±500 kV HVDC transmission lines and 150 kV and 400 kV HVAC transmission infrastructure, extending underground, overhead and submarine over a total length of approximately 420 km (Ariadne Interconnection S.A., 2020).
- EIA of the existing 400/150kV Arachthos High Voltage Centre. ADMIE 2020
- Environmental Study for the Modification of the AEPO for the 150kV power transmission line, Servion - Velventos and the 400kV power transmission line of Kozani. ADMIE, 2019
- EIA for the interconnection of the Electricity Transmission System of Crete with the National Electricity Transmission System, Attica - Crete (Korakia). ARIADNE INTERCONNECTION A.E.E.S., 2018
- EIA of 400 kV extra high voltage transmission line between the substations Maritsa East 1 (BG) and Nea Santa (EL). Independent Power Transmission Operator, 2016.
- Preliminary Environment Impact for the construction and operation of the South Stream Gas Pipeline in Greece, DIEM LtD, 2009.
- Screening, scoping and EIA of the natural gas pipeline in Volos Great Area. NATIONAL COMPANY OF NATURAL GAS, 1996.








