OXBOW
OperatingHydro power plant
- Capacity
- 190 MW
- Primary fuel
- Hydro
- County
- Baker County
- Operator
- IDAHO POWER CO
- Status
- Operating
- Commissioned
- 1961
- EIA plant ID
- 3014
- Generators
- 4
- Technology
- Conventional Hydroelectric
- Net generation (2024)
- 965 GWh
- Capacity factor (2024, EIA nameplate)
- 58%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 44.9711, -116.8471
OXBOW, a 190 MW Hydro power plant in Baker County, Oregon. Operated by IDAHO POWER CO, commissioned 1961.
How OXBOW compares
With 190 MW of capacity, OXBOW ranks 19th among the 130 operating power plants Bywatts maps in Oregon and 7th of the 58 operating Hydro plants in the state. It accounts for about 2.3% of Oregon's operating Hydro capacity and 1.3% of all operating capacity in the state. Nationally it is the 93rd-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1961, it is older than 72% of the 128 operating Oregon plants with a recorded commissioning year. Its operator, IDAHO POWER CO, runs 2 operating plants in Oregon totaling 582 MW. It shares Baker County with one other operating plant, LIME WIND.
EIA-860 lists 4 generators at the site with 190 MW of nameplate capacity, all conventional hydroelectric technology. Net generation was 965 GWh in 2024 (a 58% capacity factor), up 37% from 2022.
Grid neighborhood
The nearest named substation is HUNTER CREEK (230 kV), about 1.2 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by IDAHO POWER CO, under 0.1 miles away. Another 3 operating power plants totaling 983 MW sit within 25 miles; the largest is BROWNLEE (585 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
OXBOW is a 190 MW hydro power plant in Baker County, OR, operated by IDAHO POWER CO, commissioned in 1961. Baker County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.5 of 5 at the 11th 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 hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Baker County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Relatively Moderate | 95th | 4.8 of 5 | <0.01 |
| Earthquake | Relatively Low | 83rd | 4.3 of 5 | <0.01 |
| Heat wave | Relatively Low | 56th | 3.2 of 5 | 3.3 |
| Riverine flooding | Relatively Low | 27th | 2.1 of 5 | 0.46 |
| Hail | Relatively Low | 19th | 1.8 of 5 | 0.26 |
| Ice storm | Very Low | 19th | 1.7 of 5 | 0.01 |
| Lightning | Very Low | 17th | 1.7 of 5 | 21.1 |
| Tornado | Very Low | 5th | 1.2 of 5 | 0.09 |
| Winter weather | Relatively Moderate | 4th | 1.2 of 5 | 14.4 |
| Strong wind | Very Low | 4th | 1.2 of 5 | 0.13 |
Perils not assessed in Baker 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 Baker 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.