JOHN P MADGETT
OperatingCoal power plant
- Capacity
- 387 MW
- Primary fuel
- Coal
- County
- Buffalo County
- Operator
- DAIRYLAND POWER COOP
- Status
- Operating
- Commissioned
- 1979
- EIA plant ID
- 4271
- Generators
- 1
- Technology
- Conventional Steam Coal
- Net generation (2024)
- 914 GWh
- Capacity factor (2024, EIA nameplate)
- 27%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 44.3031, -91.9126
JOHN P MADGETT, a 387 MW Coal power plant in Buffalo County, Wisconsin. Operated by DAIRYLAND POWER COOP, commissioned 1979.
How JOHN P MADGETT compares
With 387 MW of capacity, JOHN P MADGETT ranks 11th among the 141 operating power plants Bywatts maps in Wisconsin and 6th of the 15 operating Coal plants in the state. It accounts for about 5.9% of Wisconsin's operating Coal capacity and 2.4% of all operating capacity in the state. Nationally it is the 178th-largest of the 324 operating Coal plants in the database. Commissioned in 1979, it is newer than 61% of the 141 operating Wisconsin plants with a recorded commissioning year. Its operator, DAIRYLAND POWER COOP, runs 3 operating plants in Wisconsin totaling 480 MW.
EIA-860 lists 1 generator at the site with 387 MW of nameplate capacity, all conventional steam coal technology. Net generation was 914 GWh in 2024 (a 27% capacity factor), down 56% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 161 kV line owned by NORTHERN STATES POWER CO, under 0.1 miles away. Another 4 operating power plants totaling 32 MW sit within 25 miles; the largest is ARCADIA ELECTRIC (17 MW, Oil). Within 50 miles is one mapped data center, NP Rochester in Rochester, about 33.5 miles away.
Computed by Bywatts from HIFLD power plant and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
JOHN P MADGETT is a 387 MW coal power plant in Buffalo County, WI, operated by DAIRYLAND POWER COOP, commissioned in 1979. Buffalo County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.9 of 5 at the 72nd national percentile. Lightning is the leading peril, rated Relatively Low by FEMA at the 88th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Buffalo County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Lightning | Relatively Low | 88th | 4.5 of 5 | 36.4 |
| Hail | Relatively Low | 77th | 4.1 of 5 | 4.2 |
| Heat wave | Very Low | 76th | 4.0 of 5 | 3.4 |
| Tornado | Relatively Low | 68th | 3.7 of 5 | 0.35 |
| Riverine flooding | Very Low | 62nd | 3.5 of 5 | 1.0 |
| Strong wind | Relatively Low | 58th | 3.3 of 5 | 3.4 |
| Winter weather | Very Low | 45th | 2.8 of 5 | 16.8 |
| Wildfire | Very Low | 20th | 1.8 of 5 | <0.01 |
| Ice storm | Relatively Low | 11th | 1.4 of 5 | 0.56 |
| Earthquake | Very Low | 2nd | 1.1 of 5 | <0.01 |
Perils not assessed in Buffalo 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 "No Rating" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Buffalo 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.