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 September 2023, Bulgaria's petrol supply was 164 kt: 89% from its own refineries, with imports mainly from Romania (10%); tracing one step back, no single crude origin reaches 5% of it, and 95% cannot be traced.
Country
Kazakhstan5.3 kt (est. 3%)Libya1.0 kt (est. <1%)Azerbaijan0.9 kt (est. <1%)Norway0.6 kt (est. <1%)Oman0.5 kt (est. <1%)Bulgaria: crude origin not reported146 kt (89%)Romania: crude not from imports6.3 kt (4%)Serbia: no crude data1.8 kt (1%)Romania: crude origin not reported1.7 kt (1%)Bulgaria (own refineries)146 kt (89%)Romania16 kt (10%)Serbia1.8 kt (1%)Bulgaria: petrol supply164 kt (100%)
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Crude origin (estimate)
- Colour = where it went:
- Bulgaria (own refineries)
- Romania
- Serbia
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 |
|---|---|---|---|---|
| Bulgaria (own refineries) | Bulgaria: petrol supply | 146,022 | 88.9% | ReportedEurostat nrg_cb_oilm (refinery output) |
| Romania | Bulgaria: petrol supply | 16,417 | 10.0% | ReportedEurostat nrg_ti_oilm (imports by partner country, energy basis) |
| Serbia | Bulgaria: petrol supply | 1,806 | 1.1% | ReportedEurostat nrg_ti_oilm (imports by partner country, energy basis) |
| From | To | Tonnes | Share | How we know |
|---|---|---|---|---|
| Bulgaria: crude origin not reported | Bulgaria (own refineries) | 146,022 | 100.0% | UnknownThe supplying country's statistics did not say where part of its crude came from. |
| Romania: crude not from imports | Romania | 6,315 | 38.5% | 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 | Romania | 5,350 | 32.6% | EstimatedEstimate: Romania's petrol to Bulgaria split by Romania's crude-import mix over 2023-07 to 2023-09. Confidence: medium. |
| Serbia: no crude data | Serbia | 1,806 | 100.0% | UnknownWe hold no crude import statistics for the supplying country, and we do not assume what its refineries run on. |
| Romania: crude origin not reported | Romania | 1,694 | 10.3% | UnknownThe supplying country's statistics did not say where part of its crude came from. |
| Libya | Romania | 1,015 | 6.2% | EstimatedEstimate: Romania's petrol to Bulgaria split by Romania's crude-import mix over 2023-07 to 2023-09. Confidence: medium. |
| Azerbaijan | Romania | 903 | 5.5% | EstimatedEstimate: Romania's petrol to Bulgaria split by Romania's crude-import mix over 2023-07 to 2023-09. Confidence: medium. |
| Norway | Romania | 610 | 3.7% | EstimatedEstimate: Romania's petrol to Bulgaria split by Romania's crude-import mix over 2023-07 to 2023-09. Confidence: medium. |
| Oman | Romania | 529 | 3.2% | EstimatedEstimate: Romania's petrol to Bulgaria split by Romania's crude-import mix over 2023-07 to 2023-09. Confidence: medium. |
Source & method
Source Period 2023-09 (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
- 2023-09 (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: Bulgaria’s supply of petrol in 2023-09, in tonnes of fuel. Only the middle-to-right flows are reported figures.
Month: 2023-09 (requested). Crude mixes are pooled over 2023-07 to 2023-09.
Fuel that cannot be traced, and the reason
- Bulgaria: crude origin not reported (146,022 t): The supplying country's statistics did not say where part of its crude came from.
- Romania: crude not from imports (6,315 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.
- Serbia: no crude data (1,806 t): We hold no crude import statistics for the supplying country, and we do not assume what its refineries run on.
- Romania: crude origin not reported (1,694 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.