DAY COUNTY WIND LLC
OperatingWind power plant
- Capacity
- 99 MW
- Primary fuel
- Wind
- County
- Day County
- Operator
- NEXTERA ENERGY RESOURCES
- Status
- Operating
- Commissioned
- 2010
- EIA plant ID
- 57194
- Generators
- 1
- Technology
- Onshore Wind Turbine
- Net generation (2024)
- 429 GWh
- Capacity factor (2024, EIA nameplate)
- 49%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 45.2150, -97.9056
DAY COUNTY WIND LLC, a 99 MW Wind power plant in Day County, South Dakota. Operated by NEXTERA ENERGY RESOURCES, commissioned 2010.
How DAY COUNTY WIND LLC compares
With 99 MW of capacity, DAY COUNTY WIND LLC ranks 13th among the 28 operating power plants Bywatts maps in South Dakota and 4th of the 8 operating Wind plants in the state. It accounts for about 13% of South Dakota's operating Wind capacity and 2.3% of all operating capacity in the state. Nationally it is the 261st-largest of the 708 operating Wind plants in the database. Commissioned in 2010, it is newer than 84% of the 26 operating South Dakota plants with a recorded commissioning year. Its operator, NEXTERA ENERGY RESOURCES, runs 3 operating plants in South Dakota totaling 191 MW.
EIA-860 lists 1 generator at the site with 99 MW of nameplate capacity, all onshore wind turbine technology. Net generation was 429 GWh in 2024 (a 49% capacity factor), down 3% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 115 kV line, under 0.1 miles away. One other operating power plant sits within 25 miles: CLARK (3 MW, Oil).
Computed by Bywatts from HIFLD power plant and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
DAY COUNTY WIND LLC is a 99 MW wind power plant in Day County, SD, operated by NEXTERA ENERGY RESOURCES, commissioned in 2010. Day County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.8 of 5 at the 45th national percentile. Winter weather is the leading peril, rated Relatively Moderate by FEMA at the 97th 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.
Day County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Winter weather | Relatively Moderate | 97th | 4.9 of 5 | 22.6 |
| Ice storm | Relatively Moderate | 85th | 4.4 of 5 | 0.51 |
| Heat wave | Very Low | 81st | 4.3 of 5 | 2.5 |
| Wildfire | Relatively Low | 78th | 4.1 of 5 | <0.01 |
| Strong wind | Relatively Moderate | 76th | 4.1 of 5 | 2.9 |
| Tornado | Relatively Low | 71st | 3.9 of 5 | 0.59 |
| Hail | Relatively Low | 52nd | 3.1 of 5 | 4.0 |
| Lightning | Very Low | 30th | 2.2 of 5 | 32.5 |
| Earthquake | Very Low | 13th | 1.5 of 5 | <0.01 |
| Riverine flooding | Very Low | 11th | 1.4 of 5 | 1.1 |
Perils not assessed in Day 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 Day 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.