Lake Catherine
Natural gas power plant · Hot Spring County, Arkansas
Nameplate capacity
553 MW
Rank in Arkansas
#12
of 122 plants
In service since
1970
April 1970
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Steam Turbine
- Operator
- Entergy Arkansas LLC
- County
- Hot Spring County
- Generating units
- 1
- Share of state capacity
- 2.89%
- Rank among natural gas plants in Arkansas
- #6 of 18
- EIA plant code
- 170
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 4 | Natural Gas Steam Turbine | 553 MW | 522 MW | 1970 | 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
| Harry L. Oswald | Natural gas | 600 MW |
| Flint Creek | Coal | 558 MW |
| Harry D Mattison Gas Plant | Natural gas | 349 MW |
| Bull Shoals | Hydro | 340 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 553 MW solar plant and a 553 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