Grand Isle Gas Plant / Treating Station
Natural gas power plant in Jefferson Parish, Louisiana. 9 MW of nameplate capacity across 3 generators, operated by Cox Operating LLC.
Also known as Grand Isle Gas Plant Cogen · EIA plant 54927
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 9 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- January 1965First generator online
- Operator
- Cox Operating LLCEIA operator ID 62043
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Jefferson Parish, LA29.2521, −89.9721
- EIA plant ID
- 54927EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Grand Isle Gas Plant / Treating Station produces
Free · EIA-923Net generation, 2025
Not reported
Not reported MWh, final. 0 of 12 months reported
Capacity factor, 2025
Not reported
2024: Not reported
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2022
0.0–4.7
GWh a year. Low 2018, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 3,570 | Not reported | 12 of 12 |
| 2002 | 6,132 | Not reported | 12 of 12 |
| 2003 | 3,328 | Not reported | 12 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | 0 | Not reported | 12 of 12 |
| 2006 | 0 | Not reported | 12 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | 3 | 0.0% | 12 of 12 |
| 2015 | 2 | 0.0% | 12 of 12 |
| 2016 | 3 | 0.0% | 12 of 12 |
| 2017 | 4 | 0.0% | 12 of 12 |
| 2018 | 0 | 0.0% | 12 of 12 |
| 2019 | 4,724 | 6.0% | 12 of 12 |
| 2020 | 0 | 0.0% | 12 of 12 |
| 2021 | 0 | 0.0% | 12 of 12 |
| 2022 | 0 | 0.0% | 12 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | Not reported | Not reported | 0 of 12 |
| 2025 | Not reported | Not reported | 0 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | 3.0 | January 1965 |
| 2 | Natural Gas Internal Combustion Engine | 3.0 | January 1965 |
| 3 | Natural Gas Internal Combustion Engine | 3.0 | January 1965 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Cox Operating LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Grand Isle Gas Plant / Treating Station
Questions about Grand Isle Gas Plant / Treating Station
Where is Grand Isle Gas Plant / Treating Station?
Grand Isle Gas Plant / Treating Station is in Jefferson Parish, Louisiana, at 29.2521, −89.9721. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Grand Isle Gas Plant / Treating Station?
EIA-860M for August 2026 lists Cox Operating LLC as the operator (EIA operator ID 62043). The operator is not always the owner.
When did Grand Isle Gas Plant / Treating Station start operating?
Its first generator began operating in January 1965, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page