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2439.7 MW Natural Gas Fired Combined Cycle (650 MW) + Natural Gas Steam Turbine (1790 MW) operating in Jefferson, LA — Midcontinent Independent Transmission System Operator, Inc..
2,439.7 MW
Nameplate Capacity
5
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combined Cycle + Natural Gas Steam Turbine
1971
Operating Since
Coordinates
29.9472, -90.1458
County
Jefferson, LA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Louisiana LLC | Entergy Louisiana | — |
| Owner(s) | Entergy Louisiana LLC | Entergy | — |
| Status | Operating | — | — |
Nine Mile Point is a natural gas-fired power plant located in Jefferson County, Louisiana. The plant, which began operating in 1971, has a total capacity of 2439.7 MW across 5 generators, making it the largest power plant in Louisiana and the 15th largest in the United States. It is owned by Entergy and operated by Entergy Louisiana LLC. The plant utilizes both natural gas-fired combined cycle and natural gas steam turbine technologies and is considered a hybrid plant.
In the most recent year of data, Nine Mile Point generated 7,744,883 MWh of electricity, operating at a capacity factor of 39.5%. The plant is located within the balancing authority of the Midcontinent Independent Transmission System Operator, Inc. (MISO) and the NERC reliability region of SERC.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
636.0K MWh
Latest Month
7.7M MWh
Annual Generation
39.5%
Capacity Factor
CO₂ Intensity
1015 lb/MWh
NOx
1 lb/MWh
SO₂
0.005 lb/MWh
CH₄
0.019 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
37.7%
Annual Net Gen
8049 GWh
CO₂eq
1016 lb/MWh
Subregion
SERC Mississippi Valley
2013
$965/kW
Est. Construction Cost
Total estimated cost: $2.4B
Point of Interconnection
Nearest Substation
Ninemile Point Substation · 230 kV
Substation Distance
< 10 km
Operator
Entergy Louisiana
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
EES.NINEMILE5
Pricing Hub
LOUISIANA.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-04-09
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