LANGLEY GULCH POWER PLANT
OperatingPower plant
- Capacity
- 319 MW
- County
- Payette County
- Operator
- IDAHO POWER CO
- Status
- Operating
- Commissioned
- 2012
- EIA plant ID
- 57028
- Coordinates
- 43.9042, -116.8202
LANGLEY GULCH POWER PLANT, a 319 MW power plant in Payette County, Idaho. Operated by IDAHO POWER CO, commissioned 2012.
Weather peril exposure
LANGLEY GULCH POWER PLANT is a 319 MW power plant in Payette County, ID, operated by IDAHO POWER CO, commissioned in 2012. Payette County carries moderate modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.8 of 5 at the 21st national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 92nd 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.
Payette County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 92nd | 4.7 of 5 | <0.01 |
| Earthquake | Very Low | 73rd | 3.9 of 5 | <0.01 |
| Heat wave | Relatively Low | 62nd | 3.5 of 5 | 4.5 |
| Riverine flooding | Very Low | 52nd | 3.1 of 5 | 0.25 |
| Hail | Very Low | 36th | 2.4 of 5 | 0.25 |
| Lightning | Very Low | 12th | 1.5 of 5 | 18.6 |
| Tornado | Very Low | 8th | 1.3 of 5 | 0.02 |
| Strong wind | Very Low | 5th | 1.2 of 5 | 0.32 |
| Winter weather | Relatively Low | 4th | 1.1 of 5 | 8.3 |
| Ice storm | Very Low | 4th | 1.1 of 5 | 0.02 |
Perils not assessed in Payette 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 |
Model hail, wind and flood exposure for Payette 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.