Nameplate capacity
340 MW
Rank in Arkansas
#14
of 122 plants
In service since
1952
September 1952
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- USCE-Little Rock District
- County
- Marion County
- Generating units
- 8
- Share of state capacity
- 1.78%
- Rank among hydro plants in Arkansas
- #1 of 19
- EIA plant code
- 198
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 5 | Conventional Hydroelectric | 45 MW | 50 MW | 1962 | Out of service but expected to return to service in next calendar year |
| 6 | Conventional Hydroelectric | 45 MW | 50 MW | 1962 | Operating |
| 7 | Conventional Hydroelectric | 45 MW | 50 MW | 1963 | Operating |
| 8 | Conventional Hydroelectric | 45 MW | 50 MW | 1963 | Operating |
| 1 | Conventional Hydroelectric | 40 MW | 45 MW | 1952 | Out of service but expected to return to service in next calendar year |
| 2 | Conventional Hydroelectric | 40 MW | 45 MW | 1952 | Operating |
| 3 | Conventional Hydroelectric | 40 MW | 35 MW | 1952 | Operating |
| 4 | Conventional Hydroelectric | 40 MW | 45 MW | 1953 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Arkansas
| Lake Catherine | Natural gas | 553 MW |
| Harry D Mattison Gas Plant | Natural gas | 349 MW |
| Thomas Fitzhugh | Natural gas | 256 MW |
| Pine Bluff Energy Center | Natural gas | 230 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 340 MW solar plant and a 340 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Arkansas power plants · What Arkansas actually generates