J Lamar Stall Unit
Natural gas power plant · Caddo County, Louisiana
Nameplate capacity
624 MW
Rank in Louisiana
#17
of 98 plants
In service since
2010
June 2010
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Southwestern Electric Power Co
- County
- Caddo County
- Generating units
- 3
- Share of state capacity
- 2.13%
- Rank among natural gas plants in Louisiana
- #12 of 53
- EIA plant code
- 56565
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 6STG | Natural Gas Fired Combined Cycle | 256 MW | 189 MW | 2010 | Operating |
| 6A | Natural Gas Fired Combined Cycle | 184 MW | 159 MW | 2010 | Operating |
| 6B | Natural Gas Fired Combined Cycle | 184 MW | 163 MW | 2010 | 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 Louisiana
| Perryville Power Station | Natural gas | 824 MW |
| Magnolia Power | Natural gas | 723 MW |
| Carville Energy LLC | Natural gas | 555 MW |
| RS Cogen | Natural gas | 493 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 624 MW solar plant and a 624 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 Louisiana power plants · What Louisiana actually generates