Cyprus Cable Waits On Athens

Somewhere between Crete and Cyprus, a survey vessel is waiting for Greece to clear its route. The navigational notice has not yet been issued. Until it is, one of Europe’s most ambitious undersea electricity projects remains where it has been for two years: on paper, stopped at sea by a sovereignty dispute nobody has settled.

The cable, the gap, the blocked ship

The Great Sea Interconnector (GSI) is meant to end Cyprus’s isolation as the only EU member state still cut off from the European electricity grid. The cable would run 1,208 km from Crete to Cyprus, at depths close to 3,000 metres, with an estimated cost of €1.9 billion (Enerdata). The European Commission has labelled it a Project of Common Interest, the status Brussels gives to infrastructure it considers strategically important, and has committed almost €658 million through the Connecting Europe Facility, its fund for cross-border infrastructure (Euronews, Cyprus Mail).

Roughly 60% of the seabed mapping has been completed. The remaining 40% lies in waters claimed by both Greece and Turkey (Greek News Agenda). That is the real obstacle. In July 2024, when an Italian-flagged survey vessel entered the corridor south of Kasos and Karpathos, Turkey sent warships and the vessel stopped. No survey work has advanced since (DW).

France bought a stake, not a guarantee

On 5 August, French infrastructure investor Meridiam bought majority control of the project company. IPTO, the Greek grid operator, remains in technical charge of the engineering (Prime Minister of Greece). A separate arrangement between IPTO and French cable manufacturer Nexans, which already holds a cable contract worth about €1.43 billion, covers the seabed surveys needed before the cable can be laid (Energynews.pro, Powergame).

France now has money, industrial contracts and diplomatic credibility tied to the project. Reports say Greek Prime Minister Kyriakos Mitsotakis, Cypriot President Nikos Christodoulides and French President Emmanuel Macron discussed speeding up the navigational notice once operational decisions are ready (Cyprus Mail). Greek media have floated the possibility of a French naval escort, but Paris, Athens and Nicosia have not confirmed it (RUA). French involvement raises the political cost of blocking the cable. It does not remove Greece’s problem of sending a survey ship into disputed waters (Kathimerini).

Ankara has not shifted. Turkish officials say seabed work in waters Turkey claims requires Turkish permission (Hürriyet). The legal dispute is not theatre. Greece and Cyprus rely on the UN Convention on the Law of the Sea, the treaty that sets rules for maritime jurisdiction, and argue that islands create exclusive economic zones. Turkey has not signed the convention and argues that islands do not generate such zones where they overlap with a mainland continental shelf. On Turkey’s reading, the waters between Crete and Cyprus fall within its claim. On Greece’s reading, Greek and Cypriot zones meet. A seabed survey therefore becomes more than technical work: it marks a route that either side may later treat as evidence for its maritime position. Turkey’s intervention in 2024 showed that Ankara sees permission for surveys as the point at which the dispute becomes operational (Daily Sabah).

Cyprus pays the most, sees the least

Cyprus would carry 63% of the cable’s cost, around €786 million, because it is the EU’s last isolated electricity market (Euronews). Of the €251 million IPTO says it has already spent, Cyprus’s energy regulator assessed only 32% as recoverable (ProtoThema). Opposition leader Stefanos Stefanou has asked the finance minister how Meridiam’s entry affects the total cost, viability and burden on consumers. For Cypriot taxpayers and bill-payers, the issue is blunt: they are funding a cable whose next physical step depends on a confrontation they do not control.

For Malta, the lesson is familiar enough. Small island states in the EU can find that Brussels treats infrastructure as European until the political risk arrives at the water’s edge. Cyprus needs the cable because energy isolation is expensive. Malta knows the same geography in a different form: interconnection, security of supply and the cost of being at the end of the system are not abstract policy lines, but matters that turn up in bills and in decisions taken far from the pjazza.

ENTSO-E, the body that coordinates Europe’s electricity grid operators, confirmed in April that GSI is the only recognised interconnector for Cyprus. It refused to consider any alternative routed through Turkey or northern Cyprus (ENTSO-E). The Commission says its commitment is "crystal clear". The navigational notice that would test that clarity is expected around October.

Brussels has spent almost €658 million designating, funding and planning a cable whose next step requires a survey vessel to enter waters where a non-EU state sent warships two years ago. So far, the Commission has treated GSI as an energy project. The next navigational notice will show whether it is prepared to treat it as a sovereignty problem.