FOSTER WHEELER MARTINEZ
OperatingNatural Gas power plant
- Capacity
- 114 MW
- Primary fuel
- Natural Gas
- County
- Contra Costa County
- Operator
- FOSTER WHEELER POWER SYS INC
- Status
- Operating
- Commissioned
- 1987
- EIA plant ID
- 10342
- Generators
- 3
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 690 GWh
- Capacity factor (2024, EIA nameplate)
- 69%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 38.0244, -122.0589
FOSTER WHEELER MARTINEZ, a 114 MW Natural Gas power plant in Contra Costa County, California. Operated by FOSTER WHEELER POWER SYS INC, commissioned 1987.
How FOSTER WHEELER MARTINEZ compares
With 114 MW of capacity, FOSTER WHEELER MARTINEZ ranks 148th among the 874 operating power plants Bywatts maps in California and 61st of the 190 operating Natural Gas plants in the state. It accounts for about 0.3% of California's operating Natural Gas capacity and 0.2% of all operating capacity in the state. Nationally it is the 654th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1987, it is older than 69% of the 859 operating California plants with a recorded commissioning year. It shares Contra Costa County with 18 other operating plants, including DELTA ENERGY CENTER and MARSH LANDING GENERATING STATION.
EIA-860 lists 3 generators at the site with 114 MW of nameplate capacity, all natural gas fired combined cycle technology. Net generation was 690 GWh in 2024 (a 69% capacity factor), up 44% from 2022.
Grid neighborhood
The nearest named substation is TIDEWATER (230 kV), about 0.4 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by PACIFIC GAS & ELECTRIC COMPANY, about 0.2 miles away. Another 41 operating power plants totaling 5,314 MW sit within 25 miles; the largest is DELTA ENERGY CENTER (944 MW, Natural Gas). Within 50 miles are 30 mapped data centers; the nearest is Level(3) Oakland in Emeryville, about 18.1 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
FOSTER WHEELER MARTINEZ is a 114 MW natural gas power plant in Contra Costa County, CA, operated by FOSTER WHEELER POWER SYS INC, commissioned in 1987. Contra Costa County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.5 of 5 at the 13th national percentile. Earthquake is the leading peril, rated Relatively High by FEMA at the 99th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Contra Costa County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively High | 99th | 5.0 of 5 | 0.13 |
| Riverine flooding | Very High | 93rd | 4.7 of 5 | 1.2 |
| Wildfire | Relatively Moderate | 91st | 4.6 of 5 | <0.01 |
| Heat wave | Relatively High | 45th | 2.8 of 5 | 8.5 |
| Coastal flooding | Relatively Moderate | 41st | 2.6 of 5 | 1.5 |
| Tornado | Relatively Low | 9th | 1.4 of 5 | 0.10 |
| Hail | Very Low | 4th | 1.2 of 5 | 0.04 |
| Strong wind | Relatively Low | 2nd | 1.1 of 5 | 0.04 |
| Lightning | Relatively High | 2nd | 1.1 of 5 | 4.5 |
| Winter weather | Very Low | 1st | 1.0 of 5 | 0.44 |
Perils not assessed in Contra Costa County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Ice storm | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Contra Costa County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.