RATHDRUM

Operating

Natural Gas power plant

Capacity
166 MW
Primary fuel
Natural Gas
County
Kootenai County
Operator
AVISTA CORP
Status
Operating
Commissioned
1994
EIA plant ID
7456
Generators
2
Technology
Natural Gas Fired Combustion Turbine
Net generation (2024)
866 GWh
Capacity factor (2024, EIA nameplate)
59%
Data vintage
EIA-860 2024 final; EIA-923 2022-2024 final
Coordinates
47.7857, -116.9213

See it on the map

RATHDRUM, a 166 MW Natural Gas power plant in Kootenai County, Idaho. Operated by AVISTA CORP, commissioned 1994.

How RATHDRUM compares

With 166 MW of capacity, RATHDRUM ranks 9th among the 123 operating power plants Bywatts maps in Idaho and is the smallest of the 4 operating Natural Gas plants in the state. It accounts for about 18% of Idaho's operating Natural Gas capacity and 3.4% of all operating capacity in the state. Nationally it is the 584th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1994, it is newer than 57% of the 121 operating Idaho plants with a recorded commissioning year. Its operator, AVISTA CORP, runs 3 operating plants in Idaho totaling 446 MW. It shares Kootenai County with 3 other operating plants, including RATHDRUM POWER LLC and POST FALLS.

EIA-860 lists 2 generators at the site with 166 MW of nameplate capacity, all natural gas fired combustion turbine technology. Net generation was 866 GWh in 2024 (a 59% capacity factor), about 4 times its 2022 output.

Grid neighborhood

The nearest named substation is LANCASTER (230 kV), about 0.1 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by BONNEVILLE POWER ADMINISTRATION, under 0.1 miles away. Another 8 operating power plants totaling 448 MW sit within 25 miles; the largest is RATHDRUM POWER LLC (302 MW, Natural Gas). Within 50 miles are 2 mapped data centers; the nearest is TierPoint Spokane in Liberty Lake, about 11.1 miles away.

Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology

Weather peril exposure

RATHDRUM is a 166 MW natural gas power plant in Kootenai County, ID, operated by AVISTA CORP, commissioned in 1994. Kootenai County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.0 of 5 at the 1st national percentile. Wildfire is the leading peril, rated Relatively Low by FEMA at the 62nd 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.

1.0 of 5Modeled catastrophe exposure
LowExposure band
WildfireLeading peril
Relatively LowFEMA county risk rating

Kootenai County hazard ratings

PerilFEMA ratingNational percentilePeril scoreEvents per year
WildfireRelatively Low62nd3.5 of 5<0.01
EarthquakeRelatively Low60th3.4 of 5<0.01
Heat waveRelatively Moderate59th3.4 of 53.3
Riverine floodingRelatively Moderate49th2.9 of 51.2
Winter weatherRelatively High44th2.8 of 526.8
Ice stormRelatively High15th1.6 of 50.25
Strong windRelatively Low11th1.5 of 50.24
LightningRelatively Low7th1.3 of 517.9
HailVery Low6th1.3 of 50.26
TornadoVery Low6th1.2 of 50.04

Perils not assessed in Kootenai 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.

PerilWhy it is not scored
HurricaneFEMA rating is "Not Applicable" for this county
Coastal floodingFEMA rating is "Not Applicable" for this county

Model hail, wind and flood exposure for Kootenai 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.