Fuel Origin

Flows

How oil reaches each country

Where the EU’s crude oil and fuel come from, as each member state reports its imports; every band’s width is proportional to tonnes.

In June 2026, Slovakia's jet fuel supply was 15 kt: 93% from its own refineries, with imports from Switzerland (7%); tracing one step back, the crude behind it is estimated to come mainly from the Russia (53%), the United Kingdom (10%) and Switzerland (9%), and 12% cannot be traced.

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  • Reported (solid)
  • Our arithmetic on reported figures (dotted)
  • Estimated crude behind the fuel (dashed)
  • Cannot be traced (hatched)
The numbers as a table
Reported: where Slovakia's jet fuel came from
FromToTonnesShareHow we know
Slovakia (own refineries)Slovakia: jet fuel supply14,36092.9%ReportedEurostat nrg_cb_oilm (refinery output)
SwitzerlandSlovakia: jet fuel supply1,1007.1%ReportedEurostat nrg_ti_oilm (imports by partner country, energy basis)
Estimate: the crude oil behind each supplier's fuel
FromToTonnesShareHow we know
RussiaSlovakia (own refineries)8,18957.0%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
United KingdomSlovakia (own refineries)1,61411.2%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
SwitzerlandSlovakia (own refineries)1,3989.7%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
Switzerland: no crude dataSwitzerland1,100100.0%UnknownWe hold no crude import statistics for the supplying country, and we do not assume what its refineries run on.
Slovakia: crude origin not reportedSlovakia (own refineries)7825.4%UnknownThe supplying country's statistics did not say where part of its crude came from.
LibyaSlovakia (own refineries)6854.8%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
NorwaySlovakia (own refineries)6334.4%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
UkraineSlovakia (own refineries)5403.8%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
Saudi ArabiaSlovakia (own refineries)5203.6%EstimatedEstimate: Slovakia's jet fuel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium.
Source & method
Source
EurostatInferred · medium
Period 2026-06 (month)Updated 2026-09-26 13:30 UTCConfidenceMediumMethodologyDownload CSV

Left: the crude oil behind the fuel (an estimate). Middle: the country’s own refineries and the countries the fuel was last shipped from, which may be a trading hub rather than where it was refined; the estimate treats each as the refiner. Right: Slovakia’s supply of jet fuel in 2026-06, in tonnes of fuel. Only the middle-to-right flows are reported figures.

Month: 2026-06 (requested). Crude mixes are pooled over 2026-04 to 2026-06.

Fuel that cannot be traced, and the reason

  • Switzerland: no crude data (1,100 t): We hold no crude import statistics for the supplying country, and we do not assume what its refineries run on.
  • Slovakia: crude origin not reported (782 t): The supplying country's statistics did not say where part of its crude came from.
  • Only the supplier -> country links are reported figures. The crude -> supplier links are an estimate: each supplier's fuel is split by that supplier's own crude-import mix over the latest three months.
  • Exports are assumed to be drawn from every source in proportion to its share of supply.
  • The chain looks back one country only. Imports are counted under the country the fuel was last shipped from; where that country has refineries, fuel that only passed through it is traced as if it had been refined there.
  • Widths are tonnes of this fuel, not tonnes of crude oil: a refinery makes several products from each tonne of crude.

Slovakia: country page