| Facility | Type | Country | t CO₂e/yr |
|---|---|---|---|
| Marathon Galveston Bay Refinery | Refinery | United States | 7,124,794 |
| Marathon Garyville Refinery | Refinery | United States | 5,993,065 |
| Tesoro Carson Refinery | Refinery | United States | 4,764,651 |
| Marathon Catlettsburg Refinery | Refinery | United States | 3,009,254 |
| Marathon Robinson Refinery | Refinery | United States | 2,740,271 |
| Marathon Detroit Refifnery | Refinery | United States | 1,543,396 |
| Marathon El Paso Refinery | Refinery | United States | 1,428,369 |
| Tesoro Anacortes Refinery | Refinery | United States | 1,308,701 |
| Marathon Saint Paul Refinery | Refinery | United States | 1,153,039 |
| Marathon Canton Refinery | Refinery | United States | 1,015,626 |
| Marathon Mandan Refinery | Refinery | United States | 779,674 |
| Marathon Kenai Refinery | Refinery | United States | 733,863 |
| Marathon Salt Lake City Refifnery | Refinery | United States | 657,241 |
Ownership, capacity & CO₂: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).