| # | Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|---|
| 1 | ExxonMobil Singapore Refinery | Refinery | Singapore | 5,634,555 |
| 2 | ExxonMobil Chemical Jurong Island, Jurong Island | Petrochemical | Singapore | 3,896,724 |
| 3 | Shell Eastern Petroleum, Bukom Island | Petrochemical | Singapore | 2,358,543 |
| 4 | Singapore Refining Corporation Refinery | Refinery | Singapore | 2,337,565 |
| 5 | Shell Energy and Chemicals Park Singapore Refinery | Refinery | Singapore | 2,265,996 |
| 6 | Petrochemical Corporation of Singapore, Pulau Ayer Merbau | Petrochemical | Singapore | 2,255,998 |
| 7 | Natsteel Singapore plant | Steel Plant | Singapore | 24,000 |
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.
