NORTH VALMY
OperatingCoal power plant
- Capacity
- 567 MW
- Primary fuel
- Coal
- County
- Humboldt County
- Operator
- SIERRA PACIFIC POWER CO
- Status
- Operating
- Commissioned
- 1981
- EIA plant ID
- 8224
- Generators
- 2
- Technology
- Conventional Steam Coal
- Net generation (2024)
- 1,165 GWh
- Capacity factor (2024, EIA nameplate)
- 23%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 40.8813, -117.1516
NORTH VALMY, a 567 MW Coal power plant in Humboldt County, Nevada. Operated by SIERRA PACIFIC POWER CO, commissioned 1981.
How NORTH VALMY compares
With 567 MW of capacity, NORTH VALMY ranks 9th among the 50 operating power plants Bywatts maps in Nevada and is the largest of the 2 operating Coal plants in the state. It accounts for about 72% of Nevada's operating Coal capacity and 4.8% of all operating capacity in the state. Nationally it is the 152nd-largest of the 324 operating Coal plants in the database. Commissioned in 1981, it is older than 83% of the 49 operating Nevada plants with a recorded commissioning year. Its operator, SIERRA PACIFIC POWER CO, runs 3 operating plants in Nevada totaling 1,871 MW. It shares Humboldt County with one other operating plant, NGP BLUE MOUNTAIN I LLC.
EIA-860 lists 2 generators at the site with 567 MW of nameplate capacity, all conventional steam coal technology. Net generation was 1,165 GWh in 2024 (a 23% capacity factor), down 17% from 2022. Its generators came online between 1981 and 1985.
Grid neighborhood
The nearest named substation is VALMY (345 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 120 kV line owned by SIERRA PACIFIC POWER COMPANY, about 0.1 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
NORTH VALMY is a 567 MW coal power plant in Humboldt County, NV, operated by SIERRA PACIFIC POWER CO, commissioned in 1981. Humboldt County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.9 of 5 at the 23rd national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 100th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Humboldt County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 100th | 5.0 of 5 | 0.02 |
| Earthquake | Relatively Low | 90th | 4.6 of 5 | 0.01 |
| Winter weather | Relatively Moderate | 81st | 4.2 of 5 | 11.7 |
| Heat wave | Relatively Low | 62nd | 3.5 of 5 | 4.5 |
| Riverine flooding | Very Low | 13th | 1.5 of 5 | 0.46 |
| Lightning | Very Low | 11th | 1.4 of 5 | 19.5 |
| Hail | Very Low | 8th | 1.3 of 5 | 0.02 |
| Strong wind | Very Low | 4th | 1.2 of 5 | 0.09 |
| Tornado | Very Low | 3rd | 1.1 of 5 | 0.13 |
Perils not assessed in Humboldt 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 Humboldt 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.