| Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|
| Hellenic Petroleum Aspropyrgos Refinery | Refinery | Greece | 1,528,776 |
| Hellenic Petroleum Elefsina Refinery | Refinery | Greece | 1,094,934 |
| Hellenic Petroleum Thessaloniki Refinery | Refinery | Greece | 562,937 |
| Hellenic OKTA Skopje Refinery | Refinery | North Macedonia | 190,123 |
Ownership, capacity & CO₂: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).