KETTLE FALLS GENERATING STATION
OperatingBiomass power plant
- Capacity
- 58 MW
- Primary fuel
- Biomass
- County
- Stevens County
- Operator
- AVISTA CORP
- Status
- Operating
- Commissioned
- 1983
- EIA plant ID
- 550
- Generators
- 2
- Technology
- Wood/Wood Waste Biomass
- Net generation (2024)
- 330 GWh
- Capacity factor (2024, EIA nameplate)
- 65%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 48.6204, -118.1109
KETTLE FALLS GENERATING STATION, a 58 MW Biomass power plant in Stevens County, Washington. Operated by AVISTA CORP, commissioned 1983.
How KETTLE FALLS GENERATING STATION compares
With 58 MW of capacity, KETTLE FALLS GENERATING STATION ranks 65th among the 126 operating power plants Bywatts maps in Washington and 2nd of the 7 operating Biomass plants in the state. It accounts for about 24% of Washington's operating Biomass capacity and 0.2% of all operating capacity in the state. Nationally it is the 63rd-largest of the 350 operating Biomass plants in the database. Commissioned in 1983, it is older than 54% of the 125 operating Washington plants with a recorded commissioning year. Its operator, AVISTA CORP, runs 8 operating plants in Washington totaling 298 MW. It shares Stevens County with 3 other operating plants, including SHEEP CREEK HYDRO and MEYERS FALLS.
EIA-860 lists 2 generators at the site with 58 MW of nameplate capacity, mainly wood/wood waste biomass technology. Net generation was 330 GWh in 2024 (a 65% capacity factor), up 7% from 2022. Its generators came online between 1983 and 2002.
Grid neighborhood
The nearest named substation is COLVILLE (115 kV), about 12.7 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by AVISTA CORP, under 0.1 miles away. One other operating power plant sits within 25 miles: MEYERS FALLS (1 MW, Hydro).
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
KETTLE FALLS GENERATING STATION is a 58 MW biomass power plant in Stevens County, WA, operated by AVISTA CORP, commissioned in 1983. Stevens County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 6th national percentile. Wildfire is the leading peril, rated Relatively Moderate by FEMA at the 95th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a biomass plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Stevens County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 95th | 4.8 of 5 | <0.01 |
| Riverine flooding | Relatively Low | 78th | 4.1 of 5 | 0.64 |
| Heat wave | Relatively Low | 58th | 3.3 of 5 | 3.6 |
| Winter weather | Relatively Moderate | 48th | 2.9 of 5 | 24.4 |
| Earthquake | Very Low | 35th | 2.4 of 5 | <0.01 |
| Strong wind | Very Low | 13th | 1.5 of 5 | 0.19 |
| Ice storm | Relatively Low | 7th | 1.3 of 5 | 0.09 |
| Tornado | Very Low | 7th | 1.3 of 5 | 0.09 |
| Hail | Very Low | 4th | 1.2 of 5 | 0.20 |
| Lightning | Very Low | 3rd | 1.1 of 5 | 20.6 |
Perils not assessed in Stevens 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 Stevens 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.