| # | Facilité | barils/jour | t CO₂e/an |
|---|---|---|---|
| 1 | ENEOS Mizushima Refinery | 350 200 | 2 996 525 |
| 2 | Idemitsu Kosan Yokkaichi Refinery | 255 000 | 2 181 935 |
| 3 | ENEOS Kawasaki Refinery | 249 100 | 2 080 342 |
| 4 | ENEOS Kashima Refinery | 203 100 | 1 640 471 |
| 5 | Idemitsu Kosan Chiba Refinery | 190 000 | 1 625 756 |
| 6 | Cosmo Oil Chiba Refinery | 177 000 | 1 940 569 |
| 7 | Idemitsu Kosan Aichi Refinery | 170 000 | 1 454 624 |
| 8 | ENEOS Negishi Refinery | 153 000 | 1 364 480 |
| 9 | Idemitsu Hokkaido Refinery | 150 000 | 1 644 550 |
| 10 | ENEOS Sendai Refinery | 145 000 | 1 193 308 |
| 11 | Fuji Oil Sodegaura Refinery | 143 000 | 736 584 |
| 12 | ENEOS Sakai Refinery | 141 000 | 1 206 482 |
| 13 | Taiyo Oil Shikoku Refinery | 138 000 | 1 069 669 |
| 14 | ENEOS Oita Refinery | 136 000 | 1 090 460 |
| 15 | OIREC Chiba Refinery | 129 000 | 1 103 803 |
| 16 | ENEOS Marifu Refinery | 128 000 | 659 320 |
| 17 | Idemitsu Kosan Tokuyama Refinery | 120 000 | 179 808 |
| 18 | Cosmo Oil Sakai Refinery | — | 855 661 |
| 19 | Cosmo Oil Yokkaichi Refinery | 86 000 | 655 429 |
| 20 | Idemitsu Kosan Keihin Refinery | 70 000 | 767 457 |
| 21 | ENEOS Wakayama Refinery | — | — |
Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).
