ETIWANDA GENERATING STATION
Retired 2018Natural Gas power plant
- Capacity
- 640 MW
- Primary fuel
- Natural Gas
- County
- San Bernardino County
- Operator
- NRG CALIFORNIA SOUTH LP
- EIA plant ID
- 331
- Coordinates
- 34.0912, -117.5266
ETIWANDA GENERATING STATION, a retired 640 MW Natural Gas power plant in San Bernardino County, California. It was retired in 2018, according to EIA-860.
How ETIWANDA GENERATING STATION compares
It was retired in 2018 according to EIA-860, so it is not counted in California's operating fleet. Its operator, NRG CALIFORNIA SOUTH LP, runs 2 operating plants in California totaling 1,670 MW. It shares San Bernardino County with 65 other operating plants, including MOUNTAINVIEW GENERATING STATION and HIGH DESERT POWER PLANT.
Grid neighborhood
The nearest named substation is ETIWANDA (230 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by AZUSA LIGHT & POWER, about 0.2 miles away. Another 35 operating power plants totaling 2,171 MW sit within 25 miles; the largest is MOUNTAINVIEW GENERATING STATION (1,018 MW, Natural Gas). Within 50 miles are 15 mapped data centers; the nearest is OCDC Orange County Datacenter Santa Ana in Santa Ana, about 31.2 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860 retirement records and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
ETIWANDA GENERATING STATION is a retired 640 MW natural gas power plant in San Bernardino County, CA, formerly operated by NRG CALIFORNIA SOUTH LP. San Bernardino County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.3 of 5 at the 33rd national percentile. Earthquake is the leading peril, rated Very 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.
San Bernardino County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Very High | 99th | 5.0 of 5 | 0.11 |
| Wildfire | Very High | 99th | 4.9 of 5 | <0.01 |
| Riverine flooding | Very High | 97th | 4.9 of 5 | 13.0 |
| Heat wave | Relatively High | 43rd | 2.7 of 5 | 11.6 |
| Hail | Relatively Moderate | 20th | 1.8 of 5 | 0.07 |
| Strong wind | Relatively High | 10th | 1.4 of 5 | 0.18 |
| Tornado | Relatively Moderate | 10th | 1.4 of 5 | 0.76 |
| Lightning | Relatively High | 3rd | 1.1 of 5 | 16.8 |
| Winter weather | Relatively Low | 1st | 1.0 of 5 | 2.1 |
Perils not assessed in San Bernardino 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 "No Rating" 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 San Bernardino 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.