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899 MW Natural Gas operating in Choctaw, MS — Tennessee Valley Authority
899 MW
Nameplate Capacity
4
Generators
units
Natural Gas Fired Combined Cycle
Technology
2003
Operating Since
Coordinates
33.2881, -89.4201
County
Choctaw, MS
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Mississippi LLC | Entergy Mississippi | — |
| Owner(s) | Entergy Mississippi LLC | Entergy | — |
| Status | Operating | — | — |
The Choctaw County power plant is located in Choctaw County, Mississippi. It is owned by Entergy and operated by Entergy Mississippi LLC. The plant has a total capacity of 899 MW consisting of four generators using natural gas fired combined cycle technology. The plant began operating in 2003. It is the 5th largest power plant in Mississippi out of 20, and the 206th largest in the United States out of 945.
In the latest year of reported data, the plant generated 4,486,092 MWh, achieving a capacity factor of 62.1%. The plant operates within the Tennessee Valley Authority balancing authority and the SERC NERC region. Financial data indicates an installed cost of $546.47 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
582.8K MWh
Latest Month
4.5M MWh
Annual Generation
62.1%
Capacity Factor
CO₂ Intensity
835 lb/MWh
NOx
0.074 lb/MWh
SO₂
Combined cycle · entergy mississippi, llc · Data from 2020–2024
$564/kW
Installed Cost
$1/kW
Annual CapEx
$20.0/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-04-09
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ask pi about Choctaw CountyTennessee Valley Authority (TVA)
Grid Voltage
500.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.004 lb/MWh
CH₄
0.015 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
65.3%
Annual Net Gen
5144 GWh
CO₂eq
836 lb/MWh
Subregion
SERC Tennessee Valley