| # | Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|---|
| 1 | Motor Oil Hellas Corinth Refinery | Refinery | Greece | 2,450,025 |
| 2 | Agria Cement Plant | Cement Plant | Greece | 1,622,464 |
| 3 | Hellenic Petroleum Aspropyrgos Refinery | Refinery | Greece | 1,528,776 |
| 4 | Hellenic Petroleum Elefsina Refinery | Refinery | Greece | 1,094,934 |
| 5 | Aliveri Cement Plant | Cement Plant | Greece | 990,661 |
| 6 | Pio Cement Plant | Cement Plant | Greece | 741,582 |
| 7 | Efkarpia Cement Plant | Cement Plant | Greece | 563,869 |
| 8 | Hellenic Petroleum Thessaloniki Refinery | Refinery | Greece | 562,937 |
| 9 | Magoula Cement Plant | Cement Plant | Greece | 533,322 |
| 10 | St. Nicolas aluminium plant | Aluminium Smelter | Greece | 410,921 |
| 11 | Apropyrgos Cement Plant | Cement Plant | Greece | 293,439 |
| 12 | Nea Karvali Fertilizers | Chemical Plant | Greece | 146,520 |
| 13 | ELVALHALCOR S.A. - ALUMINIUM ROLLING DIVISION | Metals Plant | Greece | 114,000 |
| 14 | Sovel Almyros steel plant | Steel Plant | Greece | 50,627 |
| 15 | Sidenor Steel Industry Thessaloniki plant | Steel Plant | Greece | 30,001 |
| 16 | Hellenic Halyvourgia Velestino steel plant | Steel Plant | Greece | 26,251 |
| 17 | Central Greece Region | Aluminium Smelter | Greece | 12,315 |
Method: ranked from open data — capacity and CO₂e from Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0). Sorted server-side; company-level data only.
