The European Public Prosecutor’s Office (EPPO) has formally confirmed that it is investigating the Great Sea Interconnector (GSI), the undersea electricity link between Cyprus and Greece. Responding to press inquiries, an EPPO spokesperson said a probe is underway but gave no further details to avoid jeopardizing the investigation.

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The confirmation followed remarks from Cyprus’s President Nikos Christodoulides, who said he had been briefed by the state Legal Service that EPPO opened a case examining potential criminal offences linked to the project.

Cyprus’s government maintains its stance that the interconnector remains a project of strategic importance. However, its viability depends on specific conditions already accepted by the implementing entity, which Nicosia expects to be fulfilled “as soon as possible.”

Government spokesman Konstantinos Letymbiotis stressed that Cyprus has no differences with Athens and wants any “shadows” around the project cleared. He said the government supports a swift conclusion of the EPPO investigation but declined to specify the complaints that triggered the probe, noting Cyprus has no further details at this stage.

In Athens, government spokesman Pavlos Marinakis stated that Greece has not received any approach from EPPO regarding the GSI. While reiterating Athens’s support for the project, he noted that Cyprus’s recent statements about economic viability raise reasonable questions, particularly concerning financing and fair cost-sharing.

Marinakis added that Athens has not yet seen the viability studies cited by Cyprus’s finance minister. He also pointed out that Cyprus’s energy regulator approved a €25 million revenue allowance for the project at the end of July, indicating that work is moving forward on the regulatory side.

From Brussels, the European Commission again underlined the interconnector’s strategic value. Energy spokesperson Anna Kaiza said the GSI is crucial for ending Cyprus’s energy isolation and enabling greater integration of renewables—developments that should ultimately reduce energy costs for businesses and consumers.

She highlighted the project’s PCI (Project of Common Interest) status, emphasizing that EU financing approvals underwent strict economic scrutiny. While declining to comment directly on the EPPO probe, Kaiza urged all stakeholders—the implementing entity, regulators, and national authorities—to honor commitments and advance the project without further delay.

Although the Commission sets no fixed deadlines for PCI projects, she warned that additional setbacks would harm all parties involved, especially Cyprus, which stands to benefit most.