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 road diesel supply was 379 kt: 53% from its own refineries, with imports mainly from Switzerland (24%), Czechia (13%) and Austria (5%); tracing one step back, the crude behind it is estimated to come mainly from the Russia (30%), Saudi Arabia (6%) and the United Kingdom (6%), and 30% cannot be traced.
Country
Russia114 kt (est. 30%)Saudi Arabia24 kt (est. 6%)United Kingdom23 kt (est. 6%)Kazakhstan22 kt (est. 6%)Switzerland20 kt (est. 5%)Azerbaijan15 kt (est. 4%)Norway13 kt (est. 4%)Other crude origins31 kt (est. 8%)Switzerland: no crude data92 kt (24%)Slovakia: crude origin not reported11 kt (3%)United Kingdom: no crude data8.4 kt (2%)Smaller flows: crude not from imports3.7 kt (<1%)Smaller flows: crude origin not reportedless than 0.1 kt (<1%)Slovakia (own refineries)201 kt (53%)Switzerland92 kt (24%)Czechia49 kt (13%)Austria19 kt (5%)Germany8.9 kt (2%)United Kingdom8.4 kt (2%)Hungary0.1 kt (<1%)Slovakia: road diesel supply379 kt (100%)
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Crude origin (estimate)
- Colour = where it went:
- Slovakia (own refineries)
- Switzerland
- Czechia
- Austria
- Germany
- United Kingdom
- Hungary
- Russia114 kt (est. 30%)
- Saudi Arabia24 kt (est. 6%)
- United Kingdom23 kt (est. 6%)
- Kazakhstan22 kt (est. 6%)
- Switzerland20 kt (est. 5%)
- Azerbaijan15 kt (est. 4%)
- Norway13 kt (est. 4%)
- Other crude origins31 kt (est. 8%)
- Switzerland: no crude data92 kt (24%)
- Slovakia: crude origin not reported11 kt (3%)
- United Kingdom: no crude data8.4 kt (2%)
- Smaller flows: crude not from imports3.7 kt (<1%)
- Smaller flows: crude origin not reportedless than 0.1 kt (<1%)
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 | 200,561 | 52.9% | ReportedEurostat nrg_cb_oilm (refinery output) |
| Switzerland | Slovakia: road diesel supply | 92,171 | 24.3% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| Czechia | Slovakia: road diesel supply | 49,462 | 13.0% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| Austria | Slovakia: road diesel supply | 19,477 | 5.1% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| Germany | Slovakia: road diesel supply | 8,921 | 2.4% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| United Kingdom | Slovakia: road diesel supply | 8,400 | 2.2% | ReportedEurostat nrg_ti_oilm (imports by country of origin, energy basis) |
| From | To | Tonnes | Share | How we know |
|---|---|---|---|---|
| Russia | Slovakia (own refineries) | 114,370 | 57.0% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Switzerland: no crude data | Switzerland | 92,171 | 100.0% | UnknownWe hold no crude import statistics for the supplying country, and we do not assume what its refineries run on. |
| United Kingdom | Slovakia (own refineries) | 22,538 | 11.2% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Switzerland | Slovakia (own refineries) | 19,532 | 9.7% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Other crude origins | Slovakia (own refineries) | 17,105 | 8.5% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Saudi Arabia | Czechia | 16,755 | 33.9% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Azerbaijan | Czechia | 14,564 | 29.4% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Kazakhstan | Austria | 12,024 | 61.7% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Slovakia: crude origin not reported | Slovakia (own refineries) | 10,923 | 5.4% | UnknownThe supplying country's statistics did not say where part of its crude came from. |
| Kazakhstan | Czechia | 8,886 | 18.0% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Norway | Slovakia (own refineries) | 8,837 | 4.4% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| United Kingdom: no crude data | United Kingdom | 8,400 | 100.0% | UnknownWe hold no crude import statistics for the supplying country, and we do not assume what its refineries run on. |
| Saudi Arabia | Slovakia (own refineries) | 7,256 | 3.6% | EstimatedEstimate: Slovakia's road diesel to Slovakia split by Slovakia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Other crude origins | Austria | 6,095 | 31.3% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Other crude origins | Germany | 4,688 | 52.6% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Other crude origins | Czechia | 3,302 | 6.7% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Norway | Czechia | 3,240 | 6.6% | EstimatedEstimate: Czechia's road diesel to Slovakia split by Czechia's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Smaller flows: crude not from imports | Czechia | 2,715 | 5.5% | 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. |
| Kazakhstan | Germany | 1,405 | 15.8% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Norway | Germany | 1,394 | 15.6% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| United Kingdom | Germany | 789 | 8.8% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Smaller flows: crude not from imports | Austria | 771 | 4.0% | 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. |
| Saudi Arabia | Austria | 319 | 1.6% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Azerbaijan | Germany | 316 | 3.5% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Azerbaijan | Austria | 267 | 1.4% | EstimatedEstimate: Austria's road diesel to Slovakia split by Austria's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Smaller flows: crude not from imports | Germany | 223 | 2.5% | 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 | 103 | 1.2% | EstimatedEstimate: Germany's road diesel to Slovakia split by Germany's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Russia | Hungary | 78 | 59.5% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Other crude origins | Hungary | 38 | 29.3% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Smaller flows: crude not from imports | Hungary | 10 | 8.0% | 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. |
| Kazakhstan | Hungary | 3 | 2.3% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
| Norway | Hungary | 1 | 0.9% | EstimatedEstimate: Hungary's road diesel to Slovakia split by Hungary's crude-import mix over 2026-04 to 2026-06. Confidence: medium. |
2 flows with a share under 0.1% are not listed here. They are still counted in every total and drawn in the diagram, and the CSV under Source & method lists every flow.
Source & method
Source Period 2026-06 (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
- 2026-06 (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 2026-06, in tonnes of fuel. Only the middle-to-right flows are reported figures.
Month: 2026-06 (latest month all EU member states reported). Crude mixes are pooled over 2026-04 to 2026-06.
Fuel that cannot be traced, and the reason
- Switzerland: no crude data (92,171 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 (10,923 t): The supplying country's statistics did not say where part of its crude came from.
- United Kingdom: no crude data (8,400 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 (3,719 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.
- Smaller flows: crude origin not reported (3 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; 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.