Co-funded by
the European Union
Initial Capacity
MW
Subsea Route
km
EU Grant
m
A Strategic Connection for Europe’s Energy Future
The Great Sea Interconnector (GSI) will establish a new electricity connection between Greece and Cyprus, ending the electricity isolation of Cyprus, the last European Union Member State without an interconnection to the European electricity network.
Through a bidirectional high-voltage direct-current (HVDC) link spanning approximately 900 kilometers beneath the Mediterranean Sea, the project will enable electricity to flow between Cyprus and the interconnected European electricity system.
The Great Sea Interconnector is progressing through the technical, regulatory and financing activities required to deliver a high-capacity electricity connection between Greece and Cyprus.
Project development involves detailed seabed surveys, cable manufacturing, onshore infrastructure planning, regulatory coordination as well as the negotiation of financing and implementation agreements.
GSI S.A. is working closely with both Transmission System Operators, Regulators and other project stakeholders to advance the technical, regulatory and financing activities required for the next phase of implementation.
The Vision Takes Shape
The EuroAsia Interconnector initiative is launched to explore an electricity connection between Greece, Cyprus and Israel.
European Recognition
The project is included in the EU’s first list of Projects of Common Interest (PCIs), establishing its strategic importance for European energy connectivity. Its PCI status has been maintained through successive updates.
Supporting Project Development
The project secures EU Connecting Europe Facility (CEF) funding for design, technical and environmental studies.
Regulatory Milestone
The energy regulators of Greece and Cyprus agree on the cross-border allocation of project costs, establishing the regulatory foundation for the interconnection.
The Project Scope Evolves
The Crete–Attica section is separated from the EuroAsia interconnector and taken forward independently by IPTO, while the Greece–Cyprus and Cyprus–Israel sections retain their PCI status.
Regional Cooperation Strengthens
Greece, Cyprus and Israel sign an MoU supporting the original interconnection initiative. IPTO becomes involved as technical adviser.
Major European Funding Secured
The Greece–Cyprus interconnection secures €657 million in Connecting Europe Facility financing for its construction.
New Development Phase
IPTO assumes responsibility for the project from Crete to Israel through Cyprus, which is renamed Great Sea Interconnector. GSI S.A. is established.
Technical Development Advances
Preparatory activities, including seabed surveys and regulatory decisions, progress on the Greece–Cyprus interconnection.
New Investment Partnership
Meridiam and IPTO sign an agreement under which Meridiam became the majority shareholder in GSI S.A., the company responsible for developing the Greece–Cyprus interconnection.