CHARLES CITY WIND FARM
OperatingWind power plant
- Capacity
- 75 MW
- Primary fuel
- Wind
- County
- Floyd County
- Operator
- MIDAMERICAN ENERGY CO
- Status
- Operating
- Commissioned
- 2008
- EIA plant ID
- 56677
- Generators
- 1
- Technology
- Onshore Wind Turbine
- Net generation (2024)
- 274 GWh
- Capacity factor (2024, EIA nameplate)
- 39%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 43.0365, -92.7291
CHARLES CITY WIND FARM, a 75 MW Wind power plant in Floyd County, Iowa. Operated by MIDAMERICAN ENERGY CO, commissioned 2008.
How CHARLES CITY WIND FARM compares
With 75 MW of capacity, CHARLES CITY WIND FARM ranks 56th among the 198 operating power plants Bywatts maps in Iowa and 31st of the 63 operating Wind plants in the state. It accounts for about 1.5% of Iowa's operating Wind capacity and 0.5% of all operating capacity in the state. Nationally it is the 323rd-largest of the 708 operating Wind plants in the database. Commissioned in 2008, it is newer than 70% of the 198 operating Iowa plants with a recorded commissioning year. Its operator, MIDAMERICAN ENERGY CO, runs 28 operating plants in Iowa totaling 8,028 MW. It shares Floyd County with 2 other operating plants, MERLE PARR and ROCKFORD.
EIA-860 lists 1 generator at the site with 80 MW of nameplate capacity, all onshore wind turbine technology. Net generation was 274 GWh in 2024 (a 39% capacity factor), down 11% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 161 kV line owned by MIDAMERICAN ENERGY CO, about 0.4 miles away. Another 7 operating power plants totaling 108 MW sit within 25 miles; the largest is MERLE PARR (36 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
CHARLES CITY WIND FARM is a 75 MW wind power plant in Floyd County, IA, operated by MIDAMERICAN ENERGY CO, commissioned in 2008. Floyd County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.9 of 5 at the 71st national percentile. Tornado 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.
Floyd County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Tornado | Relatively Moderate | 97th | 4.9 of 5 | 0.45 |
| Riverine flooding | Relatively Low | 93rd | 4.7 of 5 | 1.8 |
| Heat wave | Very Low | 90th | 4.6 of 5 | 3.9 |
| Hail | Relatively Moderate | 74th | 4.0 of 5 | 4.5 |
| Winter weather | Relatively Moderate | 67th | 3.7 of 5 | 18.1 |
| Strong wind | Relatively Low | 64th | 3.6 of 5 | 4.1 |
| Lightning | Very Low | 51st | 3.0 of 5 | 40.6 |
| Ice storm | Relatively Low | 38th | 2.5 of 5 | 0.58 |
| Wildfire | Very Low | 30th | 2.2 of 5 | <0.01 |
| Earthquake | Very Low | 9th | 1.4 of 5 | <0.01 |
| Hurricane | Very Low | 5th | 1.2 of 5 | 0.01 |
Perils not assessed in Floyd 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 Floyd 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.