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 April 2026, Slovakia's road diesel supply was 318 kt: 70% from its own refineries, with imports mainly from Czechia (12%) and Switzerland (9%); tracing one step back, the crude behind it is estimated to come mainly from Saudi Arabia (17%), the Russia (15%) and the United Kingdom (12%), and 24% cannot be traced.
Country
Saudi Arabia53 kt (est. 17%)Russia49 kt (est. 15%)United Kingdom39 kt (est. 12%)Switzerland32 kt (est. 10%)Norway20 kt (est. 6%)Libya15 kt (est. 5%)Kazakhstan14 kt (est. 4%)Other crude origins20 kt (est. 6%)Slovakia: crude origin not reported34 kt (11%)Switzerland: no crude data28 kt (9%)United Kingdom: no crude data9.9 kt (3%)Smaller flows: crude not from imports5.5 kt (2%)Slovakia (own refineries)222 kt (70%)Czechia37 kt (12%)Switzerland28 kt (9%)Austria15 kt (5%)United Kingdom9.9 kt (3%)Germany7.1 kt (2%)Hungary0.1 kt (<1%)Slovakia: road diesel supply318 kt (100%)
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Crude origin (estimate)
- Colour = where it went:
- Slovakia (own refineries)
- Czechia
- Switzerland
- Austria
- United Kingdom
- Germany
- Hungary
- Saudi Arabia53 kt (est. 17%)
- Russia49 kt (est. 15%)
- United Kingdom39 kt (est. 12%)
- Switzerland32 kt (est. 10%)
- Norway20 kt (est. 6%)
- Libya15 kt (est. 5%)
- Kazakhstan14 kt (est. 4%)
- Other crude origins20 kt (est. 6%)
- Slovakia: crude origin not reported34 kt (11%)
- Switzerland: no crude data28 kt (9%)
- United Kingdom: no crude data9.9 kt (3%)
- Smaller flows: crude not from imports5.5 kt (2%)
Where the fuel was refined
- Reported (solid)
- Our arithmetic on reported figures (dotted)
- Estimated crude behind the fuel (dashed)
- Cannot be traced (hatched)
- Reported (solid)
- Our arithmetic on reported figures (dotted)
- Estimated crude behind the fuel (dashed)
- Cannot be traced (hatched)
The numbers as a table
| From | To | Tonnes | Share | How we know |
|---|---|---|---|---|
| Slovakia (own refineries) | Slovakia: road diesel supply | 221,559 | 69.7% | ReportedEurostat nrg_cb_oilm (refinery output) |
| Czechia | Slovakia: road diesel supply | 36,673 | 11.5% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| Switzerland | Slovakia: road diesel supply | 27,615 | 8.7% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| Austria | Slovakia: road diesel supply | 15,113 | 4.8% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| United Kingdom | Slovakia: road diesel supply | 9,902 | 3.1% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| Germany | Slovakia: road diesel supply | 7,086 | 2.2% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| From | To | Tonnes | Share | How we know |
|---|---|---|---|---|
| Russia | Slovakia (own refineries) | 48,695 | 22.0% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Saudi Arabia | Slovakia (own refineries) | 38,093 | 17.2% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| United Kingdom | Slovakia (own refineries) | 37,177 | 16.8% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Slovakia: crude origin not reported | Slovakia (own refineries) | 33,845 | 15.3% | UnknownThe supplying country's statistics did not say where part of its crude came from. |
| Switzerland | Slovakia (own refineries) | 32,218 | 14.5% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Switzerland: no crude data | Switzerland | 27,615 | 100.0% | UnknownWe hold no crude import statistics for the supplying country, and we do not assume what its refineries run on. |
| Norway | Slovakia (own refineries) | 14,576 | 6.6% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Saudi Arabia | Czechia | 13,785 | 37.6% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Libya | Slovakia (own refineries) | 12,560 | 5.7% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Other crude origins | Czechia | 10,707 | 29.2% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| United Kingdom: no crude data | United Kingdom | 9,902 | 100.0% | UnknownWe hold no crude import statistics for the supplying country, and we do not assume what its refineries run on. |
| Kazakhstan | Austria | 6,809 | 45.1% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Kazakhstan | Czechia | 6,078 | 16.6% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Norway | Czechia | 3,983 | 10.9% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Other crude origins | Austria | 3,915 | 25.9% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Other crude origins | Germany | 3,034 | 42.8% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Other crude origins | Slovakia (own refineries) | 2,276 | 1.0% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Smaller flows: crude not from imports | Czechia | 2,121 | 5.8% | UnknownThe refineries used more crude than the country imported (its own production or stocks). That part is not traced rather than being filled with the import mix. |
| Smaller flows: crude not from imports | Slovakia (own refineries) | 2,118 | 1.0% | UnknownThe refineries used more crude than the country imported (its own production or stocks). That part is not traced rather than being filled with the import mix. |
| Libya | Austria | 1,657 | 11.0% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| United Kingdom | Austria | 1,227 | 8.1% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Norway | Germany | 1,194 | 16.9% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Kazakhstan | Germany | 911 | 12.9% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Smaller flows: crude not from imports | Austria | 823 | 5.4% | UnknownThe refineries used more crude than the country imported (its own production or stocks). That part is not traced rather than being filled with the import mix. |
| United Kingdom | Germany | 759 | 10.7% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Saudi Arabia | Austria | 682 | 4.5% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Libya | Germany | 655 | 9.2% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Smaller flows: crude not from imports | Germany | 339 | 4.8% | UnknownThe refineries used more crude than the country imported (its own production or stocks). That part is not traced rather than being filled with the import mix. |
| Saudi Arabia | Germany | 194 | 2.7% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Smaller flows: crude not from imports | Hungary | 62 | 47.3% | UnknownThe refineries used more crude than the country imported (its own production or stocks). That part is not traced rather than being filled with the import mix. |
| Libya | Hungary | 29 | 22.0% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Russia | Hungary | 15 | 11.8% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Saudi Arabia | Hungary | 9 | 7.2% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Norway | Hungary | 9 | 6.9% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Kazakhstan | Hungary | 3 | 2.5% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
| Other crude origins | Hungary | 3 | 2.3% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-02 to 2026-04. Confidence: medium. |
One flow with a share under 0.1% is not listed here. It is still counted in every total and drawn in the diagram, and the CSV under Source & method lists every flow.
Source & method
Source Period 2026-04 (month)Updated 2026-09-26 13:30 UTCConfidenceMediumMethodologyDownload CSV
EurostatInferred · medium
Provenance
Inferred · mediumMedium- Publisher
- Eurostat
- Dataset id
- Imports of oil and petroleum products by partner country, monthly data (refined products)nrg_ti_oilmeurostat_nrg_ti_oilm_products
- Period
- 2026-04 (month)
- Retrieved
- 2026-09-23 12:11 UTC
- Type
- Inferred · medium
- Transformation
- none applied - stored exactly as published
- Licence
- Commission Decision 2011/833/EU - reuse authorised provided the source is acknowledged
- Supplier -> country links are published figures (OFFICIAL; the unattributed remainder and any 'Other suppliers' sum are CALCULATED).
- Crude -> supplier links are an estimate (INFERRED) from each supplier's crude-import mix; the published crude imports behind each one are in links[].evidence.
- Untraceable volumes are explicit UNKNOWN nodes with their cause. They are never spread over the traced origins.
Left: the crude oil behind the fuel (an estimate). Middle: the countries whose refineries made it. Right: Slovakia’s supply of road diesel in 2026-04, in tonnes of fuel. Only the middle-to-right flows are reported figures.
Month: 2026-04 (requested). Crude mixes are pooled over 2026-02 to 2026-04.
Fuel that cannot be traced, and the reason
- Slovakia: crude origin not reported (33,845 t): The supplying country's statistics did not say where part of its crude came from.
- Switzerland: no crude data (27,615 t): We hold no crude import statistics for the supplying country, and we do not assume what its refineries run on.
- United Kingdom: no crude data (9,902 t): We hold no crude import statistics for the supplying country, and we do not assume what its refineries run on.
- Smaller flows: crude not from imports (5,463 t): The refineries used more crude than the country imported (its own production or stocks). That part is not traced rather than being filled with the import mix.
- 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; fuel re-exported through a supplier is not followed further.
- Widths are tonnes of this fuel, not tonnes of crude oil: a refinery makes several products from each tonne of crude.