Sofia Shields Lukoil Refinery

A barrel of crude lands at a Black Sea port. The papers say it is not Russian. The ship’s tracking looks clean. Customs have no obvious problem with the file. But the real questions sit behind the stamp: who sold the cargo, who financed it, who insured the vessel, and who captured the margin? Those questions matter more than the certificate of origin, and the EU still cannot answer them properly when it comes to Neftochim Burgas, the Lukoil-linked refinery that supplies most of Bulgaria’s fuel.

A plant that is the fuel supply

Neftochim is estimated to account for 80–90% of Bulgaria’s fuel market, as well as most of its jet fuel and strategic reserves. If the refinery stumbles, Bulgaria is not merely short of one supplier. It is short of the infrastructure on which the country’s fuel system depends.

That dominance gave Sofia bargaining power in Brussels. When the EU banned Russian seaborne crude in 2022, Bulgaria secured a temporary exemption allowing Neftochim to keep buying Russian oil (EUR-Lex). The exemption has since been narrowed. A July 2026 report says the plant is now under state administration and "no longer uses Russian oil" (Euronews). That claim has not been verified against customs or refinery data.

It also avoids the harder issue. Sanctions evasion does not require a Russian-flagged tanker to sail into Burgas. It only requires the commercial machinery around the oil trade, the traders, banks, insurers and buyers, to keep operating in ways that preserve the old margins.

What real separation looks like

EU oil sanctions run on two tracks. One bans Russian oil imports. The other bars EU firms from shipping, brokering, financing or insuring Russian oil sold above a fixed price cap (EU Council, EU Council). The European Commission’s own guidance makes clear that compliance is not only about the oil itself. It is also about who owns, controls and trades with a sanctioned entity (European Commission).

Italy showed what a cleaner break looks like. When Lukoil’s ISAB refinery in Sicily became a sanctions problem, Rome put it under temporary administration. The change did not stop at the shareholder. It covered the supply chain too: who bought the crude, who financed it, and who sold the refined products. Trafigura took over that role (Reuters, Reuters).

Has Bulgaria done the equivalent? Sofia recently pushed to keep Lukoil founder Vagit Alekperov and Patriarch Kirill out of the EU’s 21st sanctions package, arguing that sanctioning them could disrupt refinery operations (BTA, RFE/RL). If the plant is genuinely state-run and no longer dependent on Russian oil, the case for that exemption becomes difficult to square.

Who pays for the opacity

The Centre for Research on Energy and Clean Air estimated that full enforcement of a $44.1-per-barrel price cap in June 2026 would have cut Russian oil revenues by 36%, or about €5 billion in that month alone (CREA). Neftochim is not the only weak point. But every refinery whose commercial chain remains opaque is a place where money can still leak back towards Moscow.

Compliant refiners lose as well. A plant buying more expensive non-Russian crude has to compete with one that may still be benefiting from cheaper or Russian-linked supply. Bulgarian products can then unsettle neighbouring markets. Romania, for example, imports Bulgarian bitumen while exporting its own bitumen to Ukraine (Economica).

Bulgarian consumers may be the most telling losers. Sofia argued that protecting the refinery would keep pump prices down. But the Center for the Study of Democracy found that the earlier exemption did not meaningfully reduce prices for consumers, while Lukoil earned at least $2.4 billion in extra profit in 2022–2023 (Direktno). Bulgarians were told the exemption was shielding their fuel bills. The margin went to the company.

Lithuania’s foreign minister Kestutis Budrys called the new sanctions exceptions a "very bad tendency" driven by energy and shipping interests (TV3/BNS). His point goes to the weakness in the EU design. Sanctions require unanimity, meaning every member state must agree. One country’s refinery dependency can therefore dilute an entire package.

There is no public evidence proving that Neftochim is processing banned Russian crude today. But compliance cannot be taken on trust. It requires cargo-level customs records, refinery audits and transfer-pricing data, none of which is public. Until then, the EU has not shown that the commercial system around one of Europe’s most concentrated refineries has been properly cut off from the network that built it.