PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/10342
EIA plant 10342
Martinez · Contra Costa · CA
Marathon Bay Area Cogen
Operated by Tesoro Marketing & Refining Co. LLC (Martinez)
Published location
Where is Marathon Bay Area Cogen?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
38.024400, -122.058900
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 57,551 MWh |
| 2 | 48,507 MWh |
| 3 | 58,999 MWh |
| 4 | 52,792 MWh |
| 5 | 53,420 MWh |
| 6 | 59,179 MWh |
| 7 | 59,866 MWh |
| 8 | 58,853 MWh |
| 9 | 61,265 MWh |
| 10 | 62,926 MWh |
| 11 | 54,445 MWh |
| 12 | 62,011 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| TG1 | Natural Gas Fired Combined Cycle | NG | 40 | OP |
| TG2 | Natural Gas Fired Combined Cycle | NG | 40 | OP |
| TG3 | Natural Gas Fired Combined Cycle | NG | 33.5 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
10342
Sector
IPP CHP
Water source
Wells
Data edition
2024-final