WALNUT
OperatingNatural Gas power plant
- Capacity
- 50 MW
- Primary fuel
- Natural Gas
- County
- Stanislaus County
- Operator
- TURLOCK IRRIGATION DISTRICT
- Status
- Operating
- Commissioned
- 1986
- EIA plant ID
- 4256
- Generators
- 2
- Technology
- Natural Gas Fired Combustion Turbine
- Net generation (2024)
- 0.429 GWh
- Capacity factor (2024, EIA nameplate)
- 0.1%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 37.4903, -120.9044
WALNUT, a 50 MW Natural Gas power plant in Stanislaus County, California. Operated by TURLOCK IRRIGATION DISTRICT, commissioned 1986.
How WALNUT compares
With 50 MW of capacity, WALNUT ranks 249th among the 874 operating power plants Bywatts maps in California and 93rd of the 190 operating Natural Gas plants in the state. It accounts for about 0.1% of California's operating Natural Gas capacity and under 0.1% of all operating capacity in the state. Nationally it is the 807th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1986, it is older than 72% of the 859 operating California plants with a recorded commissioning year. Its operator, TURLOCK IRRIGATION DISTRICT, runs 7 operating plants in California totaling 792 MW. It shares Stanislaus County with 8 other operating plants, including WALNUT ENERGY CENTER and ALMOND POWER PLANT.
EIA-860 lists 2 generators at the site with 50 MW of nameplate capacity, all natural gas fired combustion turbine technology. Net generation was 0.429 GWh in 2024 (a 0.1% capacity factor).
Grid neighborhood
The nearest named substation is WALNUT (230 kV), about 0.1 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by TURLOCK IRRIGATION DISTRICT, about 0.1 miles away. Another 10 operating power plants totaling 1,071 MW sit within 25 miles; the largest is WALNUT ENERGY CENTER (301 MW, Natural Gas). Within 50 miles is one mapped data center, 801 Tenth Street Modesto (Ayera) in Modesto, about 11.5 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
WALNUT is a 50 MW natural gas power plant in Stanislaus County, CA, operated by TURLOCK IRRIGATION DISTRICT, commissioned in 1986. Stanislaus County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.5 of 5 at the 12th national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 97th 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.
Stanislaus County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 97th | 4.9 of 5 | <0.01 |
| Earthquake | Relatively High | 94th | 4.8 of 5 | 0.07 |
| Heat wave | Relatively Moderate | 71st | 3.9 of 5 | 7.2 |
| Riverine flooding | Relatively High | 52nd | 3.1 of 5 | 0.57 |
| Lightning | Relatively High | 9th | 1.3 of 5 | 7.0 |
| Hail | Relatively Low | 7th | 1.3 of 5 | 0.09 |
| Tornado | Relatively Low | 7th | 1.3 of 5 | 0.18 |
| Strong wind | Relatively Low | 3rd | 1.1 of 5 | 0.04 |
| Winter weather | Relatively Low | 1st | 1.1 of 5 | 0.22 |
Perils not assessed in Stanislaus 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 |
| Coastal flooding | 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 Stanislaus 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.