ARCHER DANIELS MIDLAND DECATUR
OperatingCoal power plant
- Capacity
- 335 MW
- Primary fuel
- Coal
- County
- Macon County
- Operator
- ARCHER DANIELS MIDLAND CO
- Status
- Operating
- Commissioned
- 1987
- EIA plant ID
- 10865
- Generators
- 7
- Technology
- Conventional Steam Coal
- Net generation (2024)
- 659 GWh
- Capacity factor (2024, EIA nameplate)
- 22%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 39.8701, -88.8908
ARCHER DANIELS MIDLAND DECATUR, a 335 MW Coal power plant in Macon County, Illinois. Operated by ARCHER DANIELS MIDLAND CO, commissioned 1987.
How ARCHER DANIELS MIDLAND DECATUR compares
With 335 MW of capacity, ARCHER DANIELS MIDLAND DECATUR ranks 31st among the 158 operating power plants Bywatts maps in Illinois and 6th of the 12 operating Coal plants in the state. It accounts for about 4.4% of Illinois's operating Coal capacity and 0.8% of all operating capacity in the state. Nationally it is the 187th-largest of the 324 operating Coal plants in the database. Commissioned in 1987, it is older than 72% of the 150 operating Illinois plants with a recorded commissioning year. Its operator, ARCHER DANIELS MIDLAND CO, runs 2 operating plants in Illinois totaling 353 MW. It shares Macon County with 2 other operating plants, TATE & LYLE DECATUR PLANT COGEN and PPG INDUSTRIES WORKS 14.
EIA-860 lists 7 generators at the site with 335 MW of nameplate capacity, all conventional steam coal technology. Net generation was 659 GWh in 2024 (a 22% capacity factor), down 41% from 2022. Its generators came online between 1987 and 2005.
Grid neighborhood
The closest transmission line found within 10 miles is a 138 kV line owned by AMEREN ILLINOIS COMPANY, about 0.4 miles away. Another 5 operating power plants totaling 1,914 MW sit within 25 miles; the largest is CLINTON POWER STATION (1,138 MW, Nuclear).
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
ARCHER DANIELS MIDLAND DECATUR is a 335 MW coal power plant in Macon County, IL, operated by ARCHER DANIELS MIDLAND CO, commissioned in 1987. Macon County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.3 of 5 at the 58th national percentile. Earthquake is the leading peril, rated Relatively Low by FEMA at the 84th 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.
Macon County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Low | 84th | 4.4 of 5 | <0.01 |
| Tornado | Relatively Moderate | 72nd | 3.9 of 5 | 0.65 |
| Hail | Relatively Moderate | 66th | 3.6 of 5 | 3.2 |
| Riverine flooding | Relatively Moderate | 57th | 3.3 of 5 | 1.4 |
| Winter weather | Relatively Moderate | 52nd | 3.1 of 5 | 8.6 |
| Strong wind | Relatively High | 50th | 3.0 of 5 | 5.0 |
| Ice storm | Relatively Moderate | 44th | 2.7 of 5 | 1.4 |
| Heat wave | Relatively Moderate | 24th | 1.9 of 5 | 7.3 |
| Lightning | Relatively Moderate | 19th | 1.8 of 5 | 47.6 |
| Hurricane | Very Low | 17th | 1.7 of 5 | 0.01 |
| Wildfire | Very Low | 10th | 1.4 of 5 | <0.01 |
Perils not assessed in Macon 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 Macon 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.