Grand Isle Gas Plant / Treating Station
Natural gas power plant · Jefferson County, Louisiana
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Internal Combustion Engine
- Operator
- Cox Operating LLC
- County
- Jefferson County
- Generating units
- 3
- Share of state capacity
- 0.03%
- Rank among natural gas plants in Louisiana
- #48 of 53
- EIA plant code
- 54927
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | 3.0 MW | 2.9 MW | 1965 | Operating |
| 2 | Natural Gas Internal Combustion Engine | 3.0 MW | 2.9 MW | 1965 | Operating |
| 3 | Natural Gas Internal Combustion Engine | 3.0 MW | 2.9 MW | 1965 | 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
| Agrilectric Power Partners Ltd | Other | 12 MW |
| New Roads | Other | 9.4 MW |
| Rayne | Other | 8.2 MW |
| Port Allen (LA) | Natural gas | 7.6 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 9.0 MW solar plant and a 9.0 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