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781.4 MW Natural Gas operating in Washington, MS — Midcontinent Independent Transmission System Operator, Inc..
781.4 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Steam Turbine
Technology
1975
Operating Since
Coordinates
33.3500, -91.1167
County
Washington, MS
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Mississippi LLC | Entergy Mississippi | — |
| Owner(s) | Entergy Mississippi LLC | Entergy | — |
| Status | Operating | — | — |
The Gerald Andrus plant is a 781.4 MW natural gas-fired power plant located in Washington County, Mississippi. It began operating in 1975 and is owned and operated by Entergy Mississippi LLC, a subsidiary of Entergy. The plant utilizes a single natural gas steam turbine generator. According to available data, the installed cost was $204.24 per kW.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region. In the most recent year with available data, the Gerald Andrus plant generated 388,516 MWh of electricity, achieving a capacity factor of 5.6%. The plant is ranked as the 11th largest in Mississippi out of 20 plants, and 263rd nationally out of 945 plants.
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
0 MWh
Latest Month
388.5K MWh
Annual Generation
5.6%
Capacity Factor
CO₂ Intensity
1480 lb/MWh
NOx
3 lb/MWh
SO₂
0.008 lb/MWh
CH₄
0.026 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
3.1%
Annual Net Gen
213 GWh
CO₂eq
1481 lb/MWh
Subregion
SERC Mississippi Valley
Steam turbine · entergy mississippi, llc · Data from 2015–2024
$265/kW
Installed Cost
$2/kW
Annual CapEx
$58.1/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Gerald Andrus Station · 230 kV
Substation Distance
< 10 km
Operator
Entergy Mississippi
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
EES.G_ANDRUS1
Pricing Hub
MS.HUB
Node Source
EIA-860 direct report
Last updated 2026-03-26
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