ARSENAL HILL
OperatingNatural Gas power plant
- Capacity
- 125 MW
- Primary fuel
- Natural Gas
- County
- Caddo Parish
- Operator
- SOUTHWESTERN ELECTRIC POWER CO
- Status
- Operating
- Commissioned
- 1960
- EIA plant ID
- 1416
- Generators
- 1
- Technology
- Natural Gas Steam Turbine
- Net generation (2024)
- 192 GWh
- Capacity factor (2024, EIA nameplate)
- 17%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 32.5179, -93.7619
ARSENAL HILL, a 125 MW Natural Gas power plant in Caddo Parish, Louisiana. Operated by SOUTHWESTERN ELECTRIC POWER CO, commissioned 1960.
How ARSENAL HILL compares
With 125 MW of capacity, ARSENAL HILL ranks 30th among the 72 operating power plants Bywatts maps in Louisiana and 21st of the 41 operating Natural Gas plants in the state. It accounts for about 0.8% of Louisiana's operating Natural Gas capacity and 0.5% of all operating capacity in the state. Nationally it is the 637th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 1960, it is older than 80% of the 72 operating Louisiana plants with a recorded commissioning year. Its operator, SOUTHWESTERN ELECTRIC POWER CO, runs 3 operating plants in Louisiana totaling 1,027 MW. It shares Caddo Parish with 2 other operating plants, J LAMAR STALL UNIT and LIEBERMAN.
EIA-860 lists 1 generator at the site with 125 MW of nameplate capacity, all natural gas steam turbine technology. Net generation was 192 GWh in 2024 (a 17% capacity factor), about 2.3 times its 2022 output.
Grid neighborhood
The closest transmission line found within 10 miles is a 138 kV line, under 0.1 miles away. Another 2 operating power plants totaling 902 MW sit within 25 miles; the largest is J LAMAR STALL UNIT (624 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
ARSENAL HILL is a 125 MW natural gas power plant in Caddo Parish, LA, operated by SOUTHWESTERN ELECTRIC POWER CO, commissioned in 1960. Caddo Parish carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.1 of 5 at the 79th national percentile. Ice storm 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.
Caddo Parish hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Very High | 96th | 4.8 of 5 | 1.5 |
| Hail | Relatively High | 81st | 4.3 of 5 | 5.4 |
| Winter weather | Relatively High | 68th | 3.7 of 5 | 2.8 |
| Hurricane | Relatively Moderate | 66th | 3.6 of 5 | 0.05 |
| Heat wave | Relatively High | 64th | 3.6 of 5 | 20.7 |
| Strong wind | Very High | 55th | 3.2 of 5 | 6.2 |
| Lightning | Very High | 53rd | 3.1 of 5 | 64.2 |
| Earthquake | Relatively Low | 52nd | 3.1 of 5 | <0.01 |
| Wildfire | Very Low | 38th | 2.5 of 5 | <0.01 |
| Tornado | Relatively Moderate | 37th | 2.5 of 5 | 0.86 |
| Riverine flooding | Relatively Moderate | 31st | 2.2 of 5 | 3.1 |
Perils not assessed in Caddo Parish
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 Caddo Parish 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.