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673 MW Natural Gas operating in Posey, IN — Midcontinent Independent Transmission System Operator, Inc..
673 MW
Nameplate Capacity
4
Generators
units
Natural Gas Fired Combustion Turbine
Technology
1991
Operating Since
Coordinates
37.9053, -87.7150
County
Posey, IN
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southern Indiana Gas & Elec Co | — | — |
| Owner(s) | Southern Indiana Gas & Elec Co | — | — |
| Status | Operating | — | — |
The A. B. Brown Generating Station is a four-unit, 700 megawatt (MW) power plant, located on the northern bank of Ohio River, 8 miles (10 km) east of Mount Vernon, Indiana and 5 miles (8 km) southwest of Evansville, Indiana just west of the Posey-Vanderburgh County Line. Each of the two coal-fired units has a name-plate capacity of 265.2 MW. Bituminous coal is used as the primary fuel type, which can be substituted for natural gas. There are also two gas turbine units, 88.2 MW of nameplate capacity each. The facility is owned by Centerpoint Energy. Vectren announced a plan to retire the plant in 2023 and replace it with a natural gas power plant; however, this plan needs to be approved by the Indiana Utility Regulatory Commission.
Read more on WikipediaThe A B Brown power plant is located in Posey County, Indiana. The plant, which began operating in 1991, has a total capacity of 673 MW across four natural gas-fired combustion turbine generators. Southern Indiana Gas & Electric Co. operates the facility, which is interconnected to the Midcontinent Independent Transmission System Operator (MISO) balancing authority within the ReliabilityFirst Corporation (RFC) NERC region. A B Brown ranks as the 5th largest power plant in Indiana out of 20, and 344th nationally out of 945 plants.
In the most recent year with available data, the plant generated 497,391 MWh, achieving a capacity factor of 8.4%. Financial data indicates an installed cost of $455.35 per kW, based on FERC filings. The plant has been the subject of 10 news articles, covering industry trends, regulatory matters, and deals.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
26.3K MWh
Latest Month
497.4K MWh
Annual Generation
8.4%
Capacity Factor
CO₂ Intensity
2431 lb/MWh
NOx
1 lb/MWh
SO₂
Steam turbine · Southern Indiana Gas and Electric Company · Data from 2024
$455/kW
Installed Cost
$0.0/MWh
Operating Cost
Market Position
ISO/RTO Market
MISO
LMP Node
SIGE.10ABGTGT
Pricing Hub
INDIANA.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
View all 5 articlesNo ask pi reports yet for this entity.
ask pi about A B BrownMidcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
3 lb/MWh
CH₄
0.277 lb/MWh
N₂O
0.040 lb/MWh
Capacity Factor
28.8%
Annual Net Gen
1783 GWh
CO₂eq
2450 lb/MWh
Subregion
RFC West