Ouachita — Plant Summary
- EIA Plant ID
- 55467
- Capacity
- 903.9 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Ouachita, LA
- Operating Since
- 2002
- Generators
- 6
- Operator
- Entergy Louisiana LLC
- Parent Company
- Entergy
- Annual Generation
- 3,944,657 MWh
- Capacity Factor
- 49.7%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
Ouachita
OperatingNatural Gas
Ranked #9 of 52 Natural Gas plants in LA#196 of 2009 nationally
903.9 MW Natural Gas operating in Ouachita, LA — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
903.9 MW
Nameplate Capacity
6
Generators
units
Natural Gas Fired Combined Cycle
Technology
2002
Operating Since
Location
Coordinates
32.7061, -92.0683
County
Ouachita, LA
Nearby Plants
- SterlingtonNatural Gas59.3 MW · 1.1 km
- Sterlington SolarSolar49 MW · 1.5 km
- Perryville Power StationNatural Gas824.1 MW · 5.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Louisiana LLC | Entergy Arkansas | — |
| Owner(s) | Entergy Arkansas LLC, Entergy Louisiana LLC | Entergy | — |
| Status | Operating | — | — |
Ownership Chain
About
The Ouachita power plant is a 903.9 MW natural gas-fired combined cycle facility located in Ouachita County, Louisiana. The plant began operating in 2002 and consists of 6 generators. It is owned by Entergy and operated by Entergy Louisiana LLC. The plant is interconnected to the Midcontinent Independent Transmission System Operator (MISO) and falls within the SERC NERC region.
In the most recent year of data, the plant generated 3,944,657 MWh, achieving a capacity factor of 49.7%. The installed cost of the plant was $485.25 per kW, according to FERC data. The Ouachita plant is ranked as the 10th largest in Louisiana out of 32 plants, and 200th nationally out of 945 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
500 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
140.9K MWh
Latest Month
3.9M MWh
Annual Generation
49.7%
Capacity Factor
Dec 2022 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$520/kW
Installed Cost
$20.0/MWh
Operating Cost
Entergy Louisiana, LLC
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Sterlington Substation · 500 kV
Substation Distance
0.048 km
Operator
Entergy Louisiana
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
EES.OUACH_2
Pricing Hub
LOUISIANA.HUB
Location Type
Generation Node
Node Source
Curated node match
News & Articles (10)Beta
Hazards·extreme cold
Entergy is working to restore power in Ouachita Parish
OUACHITA PARISH, La. (KTVE/KARD) – Across Ouachita Parish, more than 47000 residents are still without power following severe winter weather...
Entergy (operator)
myarklamiss.com·4 weeks ago
General
Freezing weather starts to relent in Louisiana, though thousands still without power
It has been nine days since thousands of people in North Louisiana lost power when an Arctic blast knocked out energy infrastructure.
Louisiana Illuminator·4 weeks ago
General
Louisiana toddler shocked by downed power line in Ouachita after storm
A 2-year-old Ouachita Parish boy is in critical condition after being shocked by a downed power line caused by Winter Storm Fern,...
Shreveport Times·4 weeks ago
General
Louisiana toddler shocked by downed power line in Ouachita after storm
A 2-year-old Ouachita Parish boy is in critical condition after being shocked by a downed power line caused by Winter Storm Fern,...
Shreveport Times·4 weeks ago
Last updated 2026-03-14
View all 10 articles