DEMPSEY RIDGE WIND FARM
OperatingWind power plant
- Capacity
- 132 MW
- Primary fuel
- Wind
- County
- Roger Mills County
- Operator
- ACCIONA WIND ENERGY USA LLC
- Status
- Operating
- Commissioned
- 2012
- EIA plant ID
- 56665
- Coordinates
- 35.5438, -99.8791
DEMPSEY RIDGE WIND FARM, a 132 MW Wind power plant in Roger Mills County, Oklahoma. Operated by ACCIONA WIND ENERGY USA LLC, commissioned 2012.
Weather peril exposure
DEMPSEY RIDGE WIND FARM is a 132 MW wind power plant in Roger Mills County, OK, operated by ACCIONA WIND ENERGY USA LLC, commissioned in 2012. Roger Mills County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.7 of 5 at the 92nd national percentile. Strong wind is the leading peril, rated Relatively Moderate by FEMA at the 100th 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.
Roger Mills County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Strong wind | Relatively Moderate | 100th | 5.0 of 5 | 3.5 |
| Ice storm | Relatively Moderate | 96th | 4.9 of 5 | 0.83 |
| Wildfire | Relatively Moderate | 94th | 4.7 of 5 | 0.01 |
| Hail | Relatively Low | 91st | 4.6 of 5 | 7.8 |
| Winter weather | Relatively Low | 90th | 4.6 of 5 | 9.0 |
| Heat wave | Very Low | 77th | 4.1 of 5 | 6.1 |
| Tornado | Relatively Low | 67th | 3.7 of 5 | 0.89 |
| Lightning | Very Low | 58th | 3.3 of 5 | 48.1 |
| Riverine flooding | Very Low | 53rd | 3.1 of 5 | 0.36 |
| Earthquake | Very Low | 37th | 2.5 of 5 | <0.01 |
| Hurricane | Very Low | 24th | 2.0 of 5 | <0.01 |
Perils not assessed in Roger Mills 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 |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Roger Mills 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.