Tensions are rising over the Adriatic oil pipeline. Hungarian energy group MOL points to technical failures, while Croatia’s state operator Janaf flatly denies the allegations. Speaking in New York, Foreign Minister Péter Szijjártó sharply criticised Croatia, accusing it of charging a “war surcharge” and exploiting Hungary’s vulnerable position.

The European Union and the United States have for months been pressing member states to halt imports of Russian oil and gas. One alternative would be to rely on the Adriatic pipeline, but Budapest insists the system cannot provide secure supplies for Hungary and Slovakia in its current state.

Szijjártó rejects the Adriatic option

According to a report by hvg.hu on MOL, September’s trial runs revealed multiple technical failures, showing that the Croatian system cannot guarantee long-term supply to Hungary and Slovakia. Janaf, however, strongly rejected the claim. The issue even surfaced at the UN General Assembly in New York, where Szijjártó was asked to respond to the contradictory reports.

The foreign minister stuck to his position: the Adriatic pipeline cannot deliver the volumes required, and relying on it alone would be dangerous.

“If we can only import oil through Croatia, that pipeline simply cannot deliver enough to guarantee uninterrupted supplies for Hungary and Slovakia,” Szijjártó said.

He added that Croatia’s energy infrastructure is less advanced than Hungary’s, making it, in his words, impossible to base Hungary’s energy security on Zagreb.

Szijjártó says Croatia is charging ‘war surcharge’ on oil

Beyond technical doubts, Szijjártó voiced deep distrust toward Croatia. He argued that Zagreb had not acted as a fair partner in recent years and is now profiting from the war at Hungary’s expense.

“The Croats are exploiting the situation that there is a war, and that Hungary sometimes needs crude oil through the Adriatic pipeline. They are charging us a war surcharge (…) and we will not allow the results of our utility price cuts to be destroyed by Croatian profiteering.”

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Péter Szijjártó during an interview in New York at the UN General Assembly. Photo: Screenshot – Facebook / Péter Szijjártó

According to the minister, since the war began, Croatia has continuously raised transit fees, now five times the European benchmark – proof, he said, that Croatia is taking advantage of Hungary’s reliance.

MOL vs. Janaf

In September, several trial runs tested whether the Adriatic pipeline could supply Hungary and Slovakia in the long term. MOL reported outages and pressure drops, claiming these showed the system cannot sustain high-volume, continuous deliveries.

Janaf, by contrast, called the tests successful, insisting the pipeline can transport over 12 million tonnes of oil per year.

“We are prepared, whether technically, organizationally or otherwise, to cover the full annual crude oil needs of MOL Group’s Hungarian and Slovak refineries,” the company said in a statement.

Janaf also argued that reduced throughput during the third test was not due to technical failure, but because MOL requested lower volumes. The tests, it noted, were carried out on the section between the Sisak terminal and the Hungarian border.

Hungary faces growing pressure to cut Russian energy dependence

The past months have seen the EU and the US ramp up pressure on member states to cut their dependence on Russian energy. Brussels is phasing out Russian oil and gas as part of its sanctions policy, while Washington has issued tougher warnings.

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U.S. Senator Lindsey Graham with the 2023 delegation to Ukraine. The senator recently warned Hungary that continuing to import Russian oil will have ‘consequences’. Photo: Wikimedia Commons

U.S. Senator Lindsey Graham recently warned that “if Hungary and Slovakia do not end their imports of Russian oil, there will be consequences – and there must be.”

Former President Donald Trump has also repeatedly urged NATO allies to stop buying Russian oil. “No excuses,” he said earlier, arguing that NATO members must act in unison to cut Moscow off from global energy markets.

At the UN General Assembly in New York, and in a meeting with Ukrainian President Volodymyr Zelenskyy, Trump again demanded an end to Europe’s “inexcusable” purchases of Russian energy. Referring specifically to Hungary, he added:

“Viktor Orbán is a friend of mine. I haven’t spoken to him about importing Russian oil yet, but I have a feeling that if I did, he would stop – and I think I will.”

What comes next for Hungary?

With international pressure intensifying, Hungary remains defiant. Péter Szijjártó has made clear that his government does not consider the Adriatic pipeline a safe alternative. In the coming months, the key question will be whether Hungary can find a solution that both satisfies its allies and secures reliable supplies for its own people.