CARPENTER
OperatingHydro power plant
- Capacity
- 56 MW
- Primary fuel
- Hydro
- County
- Garland County
- Operator
- ENTERGY ARKANSAS INC
- Status
- Operating
- Commissioned
- 1932
- EIA plant ID
- 166
- Generators
- 2
- Technology
- Conventional Hydroelectric
- Net generation (2024)
- 102 GWh
- Capacity factor (2024, EIA nameplate)
- 21%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 34.4433, -93.0260
CARPENTER, a 56 MW Hydro power plant in Garland County, Arkansas. Operated by ENTERGY ARKANSAS INC, commissioned 1932.
How CARPENTER compares
With 56 MW of capacity, CARPENTER ranks 30th among the 48 operating power plants Bywatts maps in Arkansas and 10th of the 19 operating Hydro plants in the state. It accounts for about 4.2% of Arkansas's operating Hydro capacity and 0.3% of all operating capacity in the state. Nationally it is the 264th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1932, it is older than 95% of the 48 operating Arkansas plants with a recorded commissioning year. Its operator, ENTERGY ARKANSAS INC, runs 7 operating plants in Arkansas totaling 6,977 MW. It shares Garland County with one other operating plant, BLAKELY MOUNTAIN.
EIA-860 lists 2 generators at the site with 56 MW of nameplate capacity, all conventional hydroelectric technology. Net generation was 102 GWh in 2024 (a 21% capacity factor), down 9% from 2022.
Grid neighborhood
The closest transmission line found within 10 miles is a 115 kV line owned by ENTERGY ARKANSAS INC, under 0.1 miles away. Another 6 operating power plants totaling 2,365 MW sit within 25 miles; the largest is LAKE CATHERINE (752 MW, Natural Gas).
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
CARPENTER is a 56 MW hydro power plant in Garland County, AR, operated by ENTERGY ARKANSAS INC, commissioned in 1932. Garland County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.3 of 5 at the 82nd 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 hydro plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Garland County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Ice storm | Very High | 96th | 4.8 of 5 | 1.2 |
| Lightning | Relatively High | 87th | 4.5 of 5 | 65.1 |
| Tornado | Relatively High | 86th | 4.4 of 5 | 0.52 |
| Hail | Relatively High | 84th | 4.3 of 5 | 5.5 |
| Winter weather | Relatively High | 83rd | 4.3 of 5 | 5.2 |
| Riverine flooding | Relatively Moderate | 82nd | 4.3 of 5 | 2.1 |
| Earthquake | Relatively Low | 81st | 4.2 of 5 | <0.01 |
| Strong wind | Relatively High | 56th | 3.3 of 5 | 3.8 |
| Wildfire | Relatively Low | 55th | 3.2 of 5 | <0.01 |
| Heat wave | Relatively Moderate | 55th | 3.2 of 5 | 17.2 |
| Hurricane | Relatively Low | 49th | 3.0 of 5 | 0.02 |
Perils not assessed in Garland 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 Garland 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.