Nameplate capacity
558 MW
Rank in Arkansas
#11
of 122 plants
In service since
1978
May 1978
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- Southwestern Electric Power Co
- County
- Benton County
- Generating units
- 1
- Share of state capacity
- 2.92%
- Rank among coal plants in Arkansas
- #5 of 5
- EIA plant code
- 6138
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | 558 MW | 494 MW | 1978 | 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
| John W Turk Jr Power Plant | Coal | 609 MW |
| Harry L. Oswald | Natural gas | 600 MW |
| Lake Catherine | Natural gas | 553 MW |
| Harry D Mattison Gas Plant | Natural gas | 349 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 558 MW solar plant and a 558 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