| # | Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|---|
| 1 | Obajana Cement Plant | Cement Plant | Nigeria | 5,910,670 |
| 2 | Sokoto Cement Plant | Cement Plant | Nigeria | 4,320,860 |
| 3 | Ojibawo Cement Plant | Cement Plant | Nigeria | 3,202,735 |
| 4 | Port Harcourt Fertilizer Complex | Chemical Plant | Nigeria | 3,150,986 |
| 5 | Okpotu Cement Plant | Cement Plant | Nigeria | 2,874,721 |
| 6 | Dangote Petroleum Refinery | Refinery | Nigeria | 2,656,212 |
| 7 | Sagamu Cement Plant | Cement Plant | Nigeria | 2,479,710 |
| 8 | Ewekoro 1 Cement Plant | Cement Plant | Nigeria | 1,812,170 |
| 9 | Onne (Port Harcourt) Fertilizer Complex | Chemical Plant | Nigeria | 1,643,014 |
| 10 | Gboko Cement Plant | Cement Plant | Nigeria | 1,223,364 |
| 11 | Ewekoro 2 Cement Plant | Cement Plant | Nigeria | 1,037,150 |
| 12 | Iddo Cement Plant | Cement Plant | Nigeria | 919,241 |
| 13 | Indorama Eleme Petrochemical, Port Harcourt | Petrochemical | Nigeria | 414,464 |
| 14 | Ashaka Cement Plant | Cement Plant | Nigeria | 404,790 |
| 15 | NGA-Obio/Akpor_methanol | Chemical Plant | Nigeria | 219,041 |
| 16 | PHRC Port Harcourt Refinery | Refinery | Nigeria | 185,439 |
| 17 | NGA-Port Harcourt_methanol | Chemical Plant | Nigeria | 182,360 |
| 18 | Edo Modular Refinery | Refinery | Nigeria | 78,986 |
| 19 | NNPC Warri Refinery | Refinery | Nigeria | 76,189 |
| 20 | Kam Industries Kwara steel plant | Steel Plant | Nigeria | 69,290 |
| 21 | Aradel Modular Refinery | Refinery | Nigeria | 48,269 |
| 22 | OPAC Modular Refinery | Refinery | Nigeria | 43,881 |
| 23 | Waltersmith Modular Refinery | Refinery | Nigeria | 21,940 |
| 24 | Nigerian Newsprint Manufacturing Company Pulp Mill | Pulp & Paper Mill | Nigeria | 13,363 |
| 25 | DMCL Modular Refinery | Refinery | Nigeria | 10,970 |
Method: ranked from open data — capacity & CO₂e from Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0). Sorted server-side; click any column to re-sort. Company-level data only.
