BLACK ROCK I
OperatingPower plant
- Capacity
- 70 MW
- County
- Imperial County
- Operator
- CE OBSIDIAN ENERGY LLC
- Status
- Operating
- EIA plant ID
- 57477
- Coordinates
- 33.1594, -115.6144
BLACK ROCK I, a 70 MW power plant in Imperial County, California. Operated by CE OBSIDIAN ENERGY LLC.
Weather peril exposure
BLACK ROCK I is a 70 MW power plant in Imperial County, CA, operated by CE OBSIDIAN ENERGY LLC. Imperial County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.4 of 5 at the 9th 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 this plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Imperial County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively High | 99th | 5.0 of 5 | 0.15 |
| Riverine flooding | Relatively High | 77th | 4.1 of 5 | 1.5 |
| Heat wave | Relatively Moderate | 70th | 3.8 of 5 | 16.9 |
| Wildfire | Relatively Low | 52nd | 3.1 of 5 | <0.01 |
| Strong wind | Relatively Moderate | 16th | 1.6 of 5 | 0.28 |
| Hail | Very Low | 11th | 1.4 of 5 | 0.05 |
| Tornado | Very Low | 4th | 1.2 of 5 | 0.10 |
| Lightning | Very Low | 0th | 1.0 of 5 | 11.3 |
| Hurricane | Very Low | 0th | 1.0 of 5 | 0.02 |
| Winter weather | Very Low | 0th | 1.0 of 5 | <0.01 |
Perils not assessed in Imperial 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 |
|---|---|
| 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 Imperial 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.