SEVEN MILE HILL
OperatingWind power plant
- Capacity
- 124 MW
- Primary fuel
- Wind
- County
- Carbon County
- Operator
- PACIFICORP
- Status
- Operating
- Commissioned
- 2008
- EIA plant ID
- 56843
- Generators
- 2
- Technology
- Onshore Wind Turbine
- Net generation (2024)
- 400 GWh
- Capacity factor (2024, EIA nameplate)
- 31%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 41.9366, -106.3757
SEVEN MILE HILL, a 124 MW Wind power plant in Carbon County, Wyoming. Operated by PACIFICORP, commissioned 2008.
How SEVEN MILE HILL compares
With 124 MW of capacity, SEVEN MILE HILL ranks 10th among the 53 operating power plants Bywatts maps in Wyoming and 4th of the 14 operating Wind plants in the state. It accounts for about 9.6% of Wyoming's operating Wind capacity and 1.4% of all operating capacity in the state. Nationally it is the 179th-largest of the 708 operating Wind plants in the database. Commissioned in 2008, it is newer than 67% of the 53 operating Wyoming plants with a recorded commissioning year. Its operator, PACIFICORP, runs 10 operating plants in Wyoming totaling 4,823 MW. It shares Carbon County with 4 other operating plants, including DUNLAP and SEMINOE.
EIA-860 lists 2 generators at the site with 146 MW of nameplate capacity, all onshore wind turbine technology (this page's HIFLD capacity figure is 124 MW). Net generation was 400 GWh in 2024 (a 31% capacity factor), down 20% from 2022.
Grid neighborhood
The nearest named substation is FREEZEOUT (230 kV), about 1.9 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by PACIFICORP, under 0.1 miles away. One other operating power plant sits within 25 miles: DUNLAP (116 MW, Wind).
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
SEVEN MILE HILL is a 124 MW wind power plant in Carbon County, WY, operated by PACIFICORP, commissioned in 2008. Carbon County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 5th national percentile. Riverine flooding is the leading peril, rated Relatively Low by FEMA at the 87th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a wind plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Carbon County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Riverine flooding | Relatively Low | 87th | 4.5 of 5 | 0.29 |
| Wildfire | Relatively Low | 81st | 4.2 of 5 | <0.01 |
| Earthquake | Relatively Low | 78th | 4.1 of 5 | <0.01 |
| Ice storm | Relatively Low | 60th | 3.4 of 5 | 0.02 |
| Winter weather | Relatively Moderate | 44th | 2.8 of 5 | 24.5 |
| Lightning | Relatively High | 22nd | 1.9 of 5 | 44.2 |
| Hail | Very Low | 15th | 1.6 of 5 | 0.23 |
| Tornado | Very Low | 10th | 1.4 of 5 | 0.37 |
| Strong wind | Very Low | 9th | 1.4 of 5 | 0.23 |
Perils not assessed in Carbon 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 |
| Heat wave | FEMA rating is "No Rating" for this county |
Model hail, wind and flood exposure for Carbon 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.