Chevron and HELLENiQ ENERGY have signed a landmark agreement with the Hellenic Republic granting exploration rights to four major offshore blocks, opening one of the largest unexplored maritime areas in the European Union to potential natural gas development.
Under the agreement, Chevron will hold a 70% stake and act as operator, while HELLENiQ ENERGY will retain the remaining 30%. The blocks are located south of Crete and the Peloponnese and cover a combined area of approximately 47,000 sq km.
The move is seen as a significant step in Europe’s ongoing efforts to diversify energy supplies and reduce reliance on Russian gas, which still accounts for roughly one-fifth of the EU’s imports. By unlocking new exploration acreage in the Eastern Mediterranean, Greece is positioning itself as a potential contributor to future regional gas supply.
The joint venture partners confirmed that the exploration programme will proceed in phases, beginning with seismic surveys scheduled to commence later this year. The initial data acquisition will help assess the hydrocarbon potential of the largely untapped offshore area before any drilling decisions are made.
Speaking at the signing ceremony in Athens, Prime Minister Kyriakos Mitsotakis described the agreement as a strategic development for both Greece and the wider European energy market. He noted that the European Union’s decision to curb dependence on Russian gas had created new opportunities for member states to strengthen domestic and regional energy production.
Mitsotakis highlighted Greece’s ambition to enhance its role as a regional energy hub, citing existing and planned infrastructure projects that connect South-Eastern Europe with broader European gas networks. He emphasised that, despite the EU’s long-term climate goals and transition towards renewable energy, natural gas would remain an essential component of Europe’s energy mix for years to come.
Industry observers view the agreement as a potential catalyst for further exploration activity in Greek waters, which have historically been underexplored compared with other parts of the Mediterranean. The size of the concession area makes it one of the most significant offshore licensing arrangements within the EU in recent years.
For Chevron, the deal strengthens its presence in the Eastern Mediterranean, while HELLENiQ ENERGY consolidates its role in domestic upstream development. The success of the initial seismic phase will be critical in determining whether the region can deliver commercially viable gas resources capable of contributing to Europe’s long-term energy security.
