KEOKUK
OperatingHydro power plant
- Capacity
- 125 MW
- Primary fuel
- Hydro
- County
- Lee County
- Operator
- UNION ELECTRIC CO - (MO)
- Status
- Operating
- Commissioned
- 1913
- EIA plant ID
- 1109
- Generators
- 15
- Technology
- Conventional Hydroelectric
- Net generation (2024)
- 888 GWh
- Capacity factor (2024, EIA nameplate)
- 81%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 40.3985, -91.3710
KEOKUK, a 125 MW Hydro power plant in Lee County, Iowa. Operated by UNION ELECTRIC CO - (MO), commissioned 1913.
How KEOKUK compares
With 125 MW of capacity, KEOKUK ranks 35th among the 198 operating power plants Bywatts maps in Iowa and is the largest of the 3 operating Hydro plants in the state. It accounts for about 97% of Iowa's operating Hydro capacity and 0.8% of all operating capacity in the state. Nationally it is the 146th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1913, it is older than 99% of the 198 operating Iowa plants with a recorded commissioning year. It shares Lee County with one other operating plant, ROQUETTE AMERICA.
EIA-860 lists 15 generators at the site with 125 MW of nameplate capacity, all conventional hydroelectric technology. Net generation was 888 GWh in 2024 (an 81% capacity factor), down 1% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 138 kV line, about 0.5 miles away. Another 2 operating power plants totaling 92 MW sit within 25 miles; the largest is ROQUETTE AMERICA (84 MW).
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
KEOKUK is a 125 MW hydro power plant in Lee County, IA, operated by UNION ELECTRIC CO - (MO), commissioned in 1913. Lee County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.2 of 5 at the 81st national percentile. Heat wave is the leading peril, rated Relatively Moderate by FEMA at the 86th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Lee County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Heat wave | Relatively Moderate | 86th | 4.4 of 5 | 9.3 |
| Hail | Relatively Moderate | 84th | 4.3 of 5 | 3.6 |
| Riverine flooding | Relatively Low | 80th | 4.2 of 5 | 2.4 |
| Strong wind | Relatively Moderate | 77th | 4.1 of 5 | 4.7 |
| Tornado | Relatively Moderate | 76th | 4.0 of 5 | 0.38 |
| Earthquake | Very Low | 49th | 3.0 of 5 | <0.01 |
| Lightning | Relatively Moderate | 48th | 2.9 of 5 | 45.8 |
| Wildfire | Very Low | 42nd | 2.7 of 5 | <0.01 |
| Ice storm | Relatively Low | 40th | 2.6 of 5 | 0.33 |
| Winter weather | Relatively Low | 30th | 2.2 of 5 | 11.8 |
| Hurricane | Very Low | 9th | 1.4 of 5 | <0.01 |
Perils not assessed in Lee 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 Lee 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.