TOP OF IOWA WINDFARM
OperatingWind power plant
- Capacity
- 80 MW
- Primary fuel
- Wind
- County
- Worth County
- Operator
- NORTHERN IOWA WINDPOWER LLC
- Status
- Operating
- Commissioned
- 2001
- EIA plant ID
- 55804
- Generators
- 1
- Technology
- Onshore Wind Turbine
- Net generation (2024)
- 78.4 GWh
- Capacity factor (2024, EIA nameplate)
- 11%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 43.3604, -93.4075
TOP OF IOWA WINDFARM, an 80 MW Wind power plant in Worth County, Iowa. Operated by NORTHERN IOWA WINDPOWER LLC, commissioned 2001.
How TOP OF IOWA WINDFARM compares
With 80 MW of capacity, TOP OF IOWA WINDFARM ranks 52nd among the 198 operating power plants Bywatts maps in Iowa and 28th of the 63 operating Wind plants in the state. It accounts for about 1.6% of Iowa's operating Wind capacity and 0.5% of all operating capacity in the state. Nationally it is the 302nd-largest of the 708 operating Wind plants in the database. Commissioned in 2001, it is newer than 53% of the 198 operating Iowa plants with a recorded commissioning year. It shares Worth County with 5 other operating plants, including BARTON WINDPOWER LLC and NORTHERN IOWA WINDPOWER II.
EIA-860 lists 1 generator at the site with 80 MW of nameplate capacity, all onshore wind turbine technology. Net generation was 78.4 GWh in 2024 (an 11% capacity factor), down 51% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 161 kV line, about 5.9 miles away. Another 16 operating power plants totaling 1,587 MW sit within 25 miles; the largest is EMERY STATION (603 MW, Natural Gas).
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
TOP OF IOWA WINDFARM is an 80 MW wind power plant in Worth County, IA, operated by NORTHERN IOWA WINDPOWER LLC, commissioned in 2001. Worth County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.2 of 5 at the 56th national percentile. Heat wave is the leading peril, rated Very Low by FEMA at the 99th 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.
Worth County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Heat wave | Very Low | 99th | 5.0 of 5 | 3.4 |
| Tornado | Relatively Low | 94th | 4.8 of 5 | 0.34 |
| Strong wind | Relatively Low | 91st | 4.6 of 5 | 3.7 |
| Winter weather | Relatively Low | 73rd | 3.9 of 5 | 19.6 |
| Lightning | Very Low | 65th | 3.6 of 5 | 40.3 |
| Hail | Very Low | 60th | 3.4 of 5 | 4.4 |
| Riverine flooding | Very Low | 43rd | 2.7 of 5 | 1.1 |
| Ice storm | Very Low | 39th | 2.6 of 5 | 0.71 |
| Wildfire | Very Low | 11th | 1.5 of 5 | <0.01 |
| Earthquake | Very Low | 10th | 1.4 of 5 | <0.01 |
Perils not assessed in Worth 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 Worth 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.