AMES GT
OperatingOil power plant
- Capacity
- 79 MW
- Primary fuel
- Oil
- County
- Story County
- Operator
- CITY OF AMES - (IA)
- Status
- Operating
- Commissioned
- 1972
- EIA plant ID
- 6463
- Generators
- 2
- Technology
- Petroleum Liquids
- Net generation (2024)
- 0.42 GWh
- Capacity factor (2024, EIA nameplate)
- under 0.1%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 42.0269, -93.5830
AMES GT, a 79 MW Oil power plant in Story County, Iowa. Operated by CITY OF AMES - (IA), commissioned 1972.
How AMES GT compares
With 79 MW of capacity, AMES GT ranks 55th among the 198 operating power plants Bywatts maps in Iowa and 3rd of the 77 operating Oil plants in the state. It accounts for about 8.3% of Iowa's operating Oil capacity and 0.5% of all operating capacity in the state. Nationally it is the 47th-largest of the 544 operating Oil plants in the database. Commissioned in 1972, it is older than 74% of the 198 operating Iowa plants with a recorded commissioning year. Its operator, CITY OF AMES - (IA), runs 2 operating plants in Iowa totaling 188 MW. It shares Story County with 5 other operating plants, including FPL ENERGY STORY WIND LLC and AMES ELECTRIC SERVICES POWER PLANT.
EIA-860 lists 2 generators at the site with 79 MW of nameplate capacity, all petroleum liquids technology. Net generation was 0.42 GWh in 2024 (a capacity factor under 0.1%). Its generators came online between 1972 and 2005.
Grid neighborhood
The closest transmission line found within 10 miles is a 161 kV line, about 0.3 miles away. Another 8 operating power plants totaling 495 MW sit within 25 miles; the largest is FPL ENERGY STORY WIND LLC (150 MW, Wind).
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
AMES GT is a 79 MW oil power plant in Story County, IA, operated by CITY OF AMES - (IA), commissioned in 1972. Story County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.7 of 5 at the 42nd national percentile. Tornado is the leading peril, rated Relatively High by FEMA at the 97th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to an oil plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Story County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Tornado | Relatively High | 97th | 4.9 of 5 | 0.59 |
| Heat wave | Very Low | 92nd | 4.7 of 5 | 5.4 |
| Lightning | Relatively Low | 77th | 4.1 of 5 | 42.9 |
| Winter weather | Relatively High | 58th | 3.3 of 5 | 15.9 |
| Strong wind | Relatively Moderate | 56th | 3.3 of 5 | 6.1 |
| Ice storm | Relatively Moderate | 53rd | 3.1 of 5 | 0.68 |
| Hail | Relatively Moderate | 49th | 2.9 of 5 | 6.2 |
| Riverine flooding | Relatively Low | 34th | 2.4 of 5 | 2.7 |
| Wildfire | Very Low | 19th | 1.7 of 5 | <0.01 |
| Earthquake | Very Low | 17th | 1.7 of 5 | <0.01 |
| Hurricane | Very Low | 3rd | 1.1 of 5 | 0.01 |
Perils not assessed in Story 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 Story 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.