Great Sea Interconnector project faces new geopolitical tensions

Plans to resume seabed surveys for the Great Sea Interconnector (GSI), a major undersea power link connecting Greece and Cyprus, have triggered a series of diplomatic and maritime disputes in the Eastern Mediterranean. French cable manufacturer Nexans submitted a request to Greek authorities on 8 October to resume research activities using the vessel VB Abeille Marengo, with operations tentatively scheduled for late October. The project, intended to connect the power grids of the two nations, involves a 1.9 billion euro investment and remains a strategic priority for both governments.

Energy Minister of Cyprus, Michalis Damianos, confirmed that the government is prepared to release 25 million euros to the project operator, ADMIE, as the process advances. However, progress is being challenged by Turkey, which issued multiple counter-NAVTEX notices claiming that the survey areas fall within its jurisdiction and that the Heraklion hydrographic station lacks authority. Ankara is also contesting surveys related to the separate East to Med Corridor (EMC) data cable project.

While Athens maintains that its maritime actions are legally sound under international maritime law and International Maritime Organization (IMO) standards, the situation remains fluid. Diplomatic maneuvering continues as Cyprus briefs European leaders on Turkish efforts to obstruct the project. Further developments are expected as Greece processes the remaining permit applications, with full project completion currently estimated for late 2031.