| # | Facility | t of steel | t CO₂e/yr |
|---|---|---|---|
| 1 | ArcelorMittal Lázaro Cárdenas steel plant | 6,500,000 | 5,979,126 |
| 2 | Altos Hornos De Mexico SA AHMSA steel plant | 5,500,000 | 4,044,261 |
| 3 | Ternium Guerrero San Nicolás de los Garza steel plant | 2,400,000 | 1,076,601 |
| 4 | DEACERO Celaya steel plant | 2,300,000 | 205,778 |
| 5 | DEACERO Ramos Arizpe steel plant | — | 136,979 |
| 6 | TYASA steel plant | 1,650,000 | 81,786 |
| 7 | Ternium Puebla steel plant | 1,330,000 | 596,616 |
| 8 | Tenaris TAMSA Veracruz steel plant | 1,230,000 | 138,092 |
| 9 | Grupo Simec Apizaco Cholula steel plant | 1,140,000 | 56,507 |
| 10 | Gerdau Corsa Ciudad Sahagún steel plant | — | 49,567 |
| 11 | Grupo Simec San Luis steel plants | 816,000 | 40,447 |
| 12 | Grupo Acerero steel plant | 725,000 | 40,069 |
| 13 | Ternium Apodaca steel plant | — | 29,740 |
| 14 | Gerdau Corsa Tultitlán steel plant | — | 24,784 |
Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).