Attica – Crete HVDC Line is a 500kV underground line with a length of 335km from Attica Converter Station, Attica, Attica, Greece, to Damasta Substation, Crete, Crete, Greece.

The project, which is currently under construction, is expected to be commissioned in 2023.


Attica – Crete HVDC Line is an underground line that will be operated by IPTO. The line will carry direct current (AC) through double circuit cable.

Approximately $1,186m was financed by the authorities to undertake the construction works of the project.

The development of the Attica – Crete HVDC Line project has been approved by the Regulatory authority for energy, Greece.

Attica – Crete HVDC Line project development status

The construction works on the Attica – Crete HVDC Line project were commenced in 2020 and commissioning is expected in 2023.

Contractors involved

GEK TERNA Group of Companies, Nexans, NKT, Prysmian Group Sverige and Siemens was appointed by IPTO to undertake the construction works on the Attica – Crete HVDC Line project.

About IPTO

IPTO SA (IPTO), a subsidiary of Public Power Corporation SA, is a power distribution company. The company provides electrical transmission system operation solutions. Its services include system supervision, control and operation; and operation scheduling. The company also offers training and education services. IPTO also provides legal and functional unbundling of the transmission and distribution functions of vertically integrated undertakings participating in member states. Its installed transmission lines such as overhead transmission line, submarine transmission line, underground transmission line, substation and interconnection.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.