Offshore activity marks key turning point for Greece’s maritime strategy

The recent launch of offshore exploration by a Chevron-led consortium in two deep-water zones south of Crete, along with activity in the southern Ionian Sea, represents a significant shift in Greece’s maritime and energy policy. These frontier areas — among the deepest and most technically challenging in the Mediterranean — are now entering their initial operational stage of geophysical surveys.

Their renewed prioritization is deliberate, with an analysis by Modern Diplomacy arguing that successive Greek governments showed limited operational engagement in the southern offshore regions for decades, even as exploration westward progressed gradually. Yet, according to the article, the southern zones had already been technically and regulatorily prepared since late 2019.

The piece contends that the delay stemmed not from geology or licensing hurdles, but from political considerations. Greece’s offshore trajectory has historically followed cycles of momentum followed by stagnation. Early drilling in the Ionian Sea in the late 1970s generated optimism that ultimately faded. Interest resurfaced in the 1990s, but administrative fragmentation and regional tensions undermined sustained progress. Even after major gas discoveries in Israel, Cyprus and Egypt transformed the Eastern Mediterranean landscape after 2010, Greece remained cautious, frequently placing diplomatic sensitivities ahead of geological opportunity.

The offshore blocks south and west of Crete were designed and assessed by the Hellenic Hydrocarbon Resources Management Authority — now known as Hellenic Hydrocarbon and Energy Resources Management Company (HEREMA) — as a unified geological system. This effort unfolded during a period when Greece invested heavily in rebuilding its hydrocarbons authority, updating its regulatory framework and promoting its geological potential to international energy firms and institutions.

According to the article, these preparations established the technical and legal groundwork enabling exploration to move forward today. It also underscores the importance of shielding exploration policy from political pressures that have historically distorted decision-making.

A key turning point came in 2021, when TotalEnergies withdrew from offshore blocks west of Crete and in the Ionian Sea, followed shortly by Repsol. The article argues these exits reflected global portfolio strategy rather than doubts about Greek geology. International energy firms operate on a straightforward principle: they must replace the molecules they sell. When a basin no longer aligns with their replacement strategy, they move on.

Simultaneously, Greece embraced a more assertive “green” political direction, a shift that HEREMA also reflected in its orientation. The combination of corporate withdrawals and political repositioning contributed to a broad deceleration in offshore activity and the near-total halt of onshore exploration.

According to the Modern Diplomacy analysis, the renewed focus on southern Crete signals a transition toward a more economically driven strategy. Exploration is now framed not only as a means of expanding geological knowledge, but also as a potential investment pillar within the emerging LNG corridor linking Greece to Eastern Europe and the Balkans.

The timing, the piece suggests, is significant. The Greek Corridor is advancing, US engagement with North Africa’s extensive gas reserves is intensifying, and the western reaches of the deep Herodotus Basin — long regarded as a theoretical asset — have acquired fresh operational urgency.

Without the political shift in governance in the United States and Europe’s subsequent alignment with Washington’s energy-security priorities, the article argues, this renewed momentum would have been unlikely to have materialized in the same way. A revitalized transatlantic emphasis on diversification, LNG infrastructure and North African gas resources has created conditions for Greece’s offshore agenda to return to the forefront with renewed urgency.

By Nazrin Sadigova