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 2025, Slovenia's petrol supply was 47 kt, all of it imported, from Greece (55%), Croatia (28%) and Austria (17%); tracing one step back, the crude behind it is estimated to come mainly from Kazakhstan (32%), Iraq (19%) and Azerbaijan (16%), and 2% cannot be traced.
Country
Kazakhstan15 kt (est. 32%)Iraq8.7 kt (est. 19%)Azerbaijan7.5 kt (est. 16%)Libya6.2 kt (est. 13%)Saudi Arabia4.1 kt (est. 9%)Norway1.8 kt (est. 4%)Nigeria1.4 kt (est. 3%)Other crude origins1.4 kt (est. 3%)Smaller flows: crude not from imports0.4 kt (<1%)Smaller flows: crude origin not reported0.3 kt (<1%)Greece26 kt (55%)Croatia13 kt (28%)Austria8.0 kt (17%)Slovenia: petrol supply47 kt (100%)
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Crude origin (estimate)
- Kazakhstan15 kt (est. 32%)
- Iraq8.7 kt (est. 19%)
- Azerbaijan7.5 kt (est. 16%)
- Libya6.2 kt (est. 13%)
- Saudi Arabia4.1 kt (est. 9%)
- Norway1.8 kt (est. 4%)
- Nigeria1.4 kt (est. 3%)
- Other crude origins1.4 kt (est. 3%)
- Smaller flows: crude not from imports0.4 kt (<1%)
- Smaller flows: crude origin not reported0.3 kt (<1%)
Last shipped from
- 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 |
|---|---|---|---|---|
| Greece | Slovenia: petrol supply | 26,000 | 55.3% | ReportedEurostat nrg_ti_oilm (imports by partner country, energy basis) |
| Croatia | Slovenia: petrol supply | 13,000 | 27.7% | ReportedEurostat nrg_ti_oilm (imports by partner country, energy basis) |
| Austria | Slovenia: petrol supply | 8,000 | 17.0% | ReportedEurostat nrg_ti_oilm (imports by partner country, energy basis) |
| From | To | Tonnes | Share | How we know |
|---|---|---|---|---|
| Iraq | Greece | 8,454 | 32.5% | EstimatedEstimate: Greece's petrol to Slovenia split by Greece's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Kazakhstan | Greece | 8,093 | 31.1% | EstimatedEstimate: Greece's petrol to Slovenia split by Greece's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Azerbaijan | Croatia | 7,113 | 54.7% | EstimatedEstimate: Croatia's petrol to Slovenia split by Croatia's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Kazakhstan | Austria | 3,929 | 49.1% | EstimatedEstimate: Austria's petrol to Slovenia split by Austria's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Libya | Greece | 3,681 | 14.2% | EstimatedEstimate: Greece's petrol to Slovenia split by Greece's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Kazakhstan | Croatia | 3,072 | 23.6% | EstimatedEstimate: Croatia's petrol to Slovenia split by Croatia's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Saudi Arabia | Greece | 2,577 | 9.9% | EstimatedEstimate: Greece's petrol to Slovenia split by Greece's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Norway | Greece | 1,832 | 7.0% | EstimatedEstimate: Greece's petrol to Slovenia split by Greece's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Saudi Arabia | Austria | 1,511 | 18.9% | EstimatedEstimate: Austria's petrol to Slovenia split by Austria's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Libya | Croatia | 1,408 | 10.8% | EstimatedEstimate: Croatia's petrol to Slovenia split by Croatia's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Nigeria | Croatia | 1,408 | 10.8% | EstimatedEstimate: Croatia's petrol to Slovenia split by Croatia's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Other crude origins | Greece | 1,363 | 5.2% | EstimatedEstimate: Greece's petrol to Slovenia split by Greece's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Libya | Austria | 1,127 | 14.1% | EstimatedEstimate: Austria's petrol to Slovenia split by Austria's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Smaller flows: crude not from imports | Austria | 447 | 5.6% | 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. |
| Azerbaijan | Austria | 433 | 5.4% | EstimatedEstimate: Austria's petrol to Slovenia split by Austria's crude-import mix over 2025-04 to 2025-06. Confidence: medium. |
| Smaller flows: crude origin not reported | Austria | 302 | 3.8% | UnknownThe supplying country's statistics did not say where part of its crude came from. |
| Iraq | Austria | 247 | 3.1% | EstimatedEstimate: Austria's petrol to Slovenia split by Austria's crude-import mix over 2025-04 to 2025-06. 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 2025-06 (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
- 2025-06 (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 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: Slovenia’s supply of petrol in 2025-06, in tonnes of fuel. Only the middle-to-right flows are reported figures.
Month: 2025-06 (requested). Crude mixes are pooled over 2025-04 to 2025-06.
Fuel that cannot be traced, and the reason
- Smaller flows: crude not from imports (447 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 (302 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.