| # | Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|---|
| 1 | Aughinish Alumina Refinery | Aluminium Smelter | Ireland | 2,325,266 |
| 2 | Drogeheda Cement Plant | Cement Plant | Ireland | 984,891 |
| 3 | Balleyconnell Cement Plant | Cement Plant | Ireland | 649,735 |
| 4 | Kinnegad Cement Plant | Cement Plant | Ireland | 293,265 |
| 5 | Irving Oil Whitegate Refinery | Refinery | Ireland | 289,439 |
| 6 | Limerick Cement Plant | Cement Plant | Ireland | 237,549 |
| 7 | Premier Periclase Limited | Lime Plant | Ireland | 173,206 |
| 8 | Adare-Rathkeale Municipal District | Aluminium Smelter | Ireland | 138,729 |
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.
