HARRY L. OSWALD
OperatingNatural Gas power plant
- Capacity
- 600 MW
- Primary fuel
- Natural Gas
- County
- Pulaski County
- Operator
- ARKANSAS ELECTRIC COOP CORP
- Status
- Operating
- Commissioned
- 2002
- EIA plant ID
- 55221
- Generators
- 9
- Technology
- Natural Gas Fired Combined Cycle
- Net generation (2024)
- 1,149 GWh
- Capacity factor (2024, EIA nameplate)
- 22%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 34.5919, -92.2164
HARRY L. OSWALD, a 600 MW Natural Gas power plant in Pulaski County, Arkansas. Operated by ARKANSAS ELECTRIC COOP CORP, commissioned 2002.
How HARRY L. OSWALD compares
With 600 MW of capacity, HARRY L. OSWALD ranks 11th among the 48 operating power plants Bywatts maps in Arkansas and 6th of the 15 operating Natural Gas plants in the state. It accounts for about 8.3% of Arkansas's operating Natural Gas capacity and 3.7% of all operating capacity in the state. Nationally it is the 259th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2002, it is newer than 68% of the 48 operating Arkansas plants with a recorded commissioning year. Its operator, ARKANSAS ELECTRIC COOP CORP, runs 9 operating plants in Arkansas totaling 2,033 MW. It shares Pulaski County with 3 other operating plants, including MURRAY and TWO PINE LANDFILL GAS RECOVERY.
EIA-860 lists 9 generators at the site with 600 MW of nameplate capacity, all natural gas fired combined cycle technology. Net generation was 1,149 GWh in 2024 (a 22% capacity factor), up 15% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 500 kV line owned by ENTERGY ARKANSAS INC, under 0.1 miles away. Another 4 operating power plants totaling 1,852 MW sit within 25 miles; the largest is WHITE BLUFF (1,800 MW, Coal).
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
HARRY L. OSWALD is a 600 MW natural gas power plant in Pulaski County, AR, operated by ARKANSAS ELECTRIC COOP CORP, commissioned in 2002. Pulaski County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.2 of 5 at the 55th national percentile. Lightning is the leading peril, rated Very High by FEMA at the 96th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Pulaski County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Lightning | Very High | 96th | 4.9 of 5 | 61.6 |
| Ice storm | Very High | 92nd | 4.7 of 5 | 1.1 |
| Earthquake | Relatively High | 91st | 4.7 of 5 | <0.01 |
| Tornado | Very High | 83rd | 4.3 of 5 | 0.64 |
| Winter weather | Very High | 81st | 4.2 of 5 | 5.0 |
| Riverine flooding | Relatively High | 75th | 4.0 of 5 | 4.9 |
| Hail | Relatively High | 59th | 3.4 of 5 | 5.1 |
| Heat wave | Relatively Moderate | 57th | 3.3 of 5 | 18.7 |
| Hurricane | Relatively Low | 48th | 2.9 of 5 | 0.03 |
| Wildfire | Relatively Low | 39th | 2.5 of 5 | <0.01 |
| Strong wind | Relatively High | 22nd | 1.9 of 5 | 3.3 |
Perils not assessed in Pulaski 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 Pulaski 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.