| # | Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|---|
| 1 | Voestalpine Stahl Linz steel plant | Steel Plant | Austria | 10,095,584 |
| 2 | OMV Schwechat Refinery | Refinery | Austria | 2,563,595 |
| 3 | Voestalpine Stahl Donawitz steel plant | Steel Plant | Austria | 1,335,721 |
| 4 | Linz Melamine and Fertilizers Complex | Chemical Plant | Austria | 752,400 |
| 5 | OMV AG , Schwechat | Petrochemical | Austria | 626,939 |
| 6 | Gartenau Cement Plant | Cement Plant | Austria | 367,592 |
| 7 | Retznei Cement Plant | Cement Plant | Austria | 348,955 |
| 8 | Mannersdorf Cement Plant | Cement Plant | Austria | 313,384 |
| 9 | Jungbunzlauer Austria Ag | Food & Beverage | Austria | 310,619 |
| 10 | Gmunden Cement Plant | Cement Plant | Austria | 286,642 |
| 11 | Wietersdorf Cement Plant | Cement Plant | Austria | 165,380 |
| 12 | Kirchdorfer Cement Plant | Cement Plant | Austria | 149,882 |
| 13 | Vils Cement Plant | Cement Plant | Austria | 114,432 |
| 14 | Wopfinger Cement Plant | Cement Plant | Austria | 109,150 |
| 15 | Austria | Chemical Plant | Austria | 60,282 |
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.