A B Brown
Natural gas power plant in Posey County, Indiana. 647.4 MW of nameplate capacity across 4 generators, operated by Southern Indiana Gas & Elec Co.
Also known as A. B. Brown Generating Station · A.B. Brown · AB Brown · EIA plant 6137
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 647.4 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- June 1991First generator online
- Operator
- Southern Indiana Gas & Elec CoEIA operator ID 17633
- Grid
- MISOBalancing authority MISO
- Price nodes
- 4 MISO nodesResource nodes with prices
- Location
- Posey County, IN37.9053, −87.7150
- EIA plant ID
- 6137EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power A B Brown produces
Free · EIA-923Net generation, 2025
497 GWh
497,391 MWh, final
Capacity factor, 2025
Not reported
2024: 3.2%
January to July 2026
482 GWh
Provisional
Range, 2015 to 2025
0.0–3.0
TWh a year. Low 2024, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 2,989,573 | Not reported | 12 of 12 |
| 2001 | 3,202,163 | Not reported | 12 of 12 |
| 2002 | 3,194,749 | Not reported | 12 of 12 |
| 2003 | 2,993,184 | Not reported | 12 of 12 |
| 2004 | 2,693,557 | Not reported | 12 of 12 |
| 2005 | 3,572,369 | Not reported | 12 of 12 |
| 2006 | 3,409,178 | Not reported | 12 of 12 |
| 2007 | 3,326,453 | Not reported | 12 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | 2,110,412 | Not reported | 12 of 12 |
| 2010 | 2,125,761 | 34.3% | 12 of 12 |
| 2011 | 2,120,824 | 34.3% | 12 of 12 |
| 2012 | 2,369,865 | 38.2% | 12 of 12 |
| 2013 | 2,470,212 | 39.9% | 12 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 2,491,930 | 40.2% | 12 of 12 |
| 2016 | 2,135,061 | 34.4% | 12 of 12 |
| 2017 | 1,942,600 | 31.4% | 12 of 12 |
| 2018 | 2,444,520 | 39.5% | 12 of 12 |
| 2019 | 2,469,960 | 39.9% | 12 of 12 |
| 2020 | 2,075,606 | 33.4% | 12 of 12 |
| 2021 | 2,751,582 | 44.4% | 12 of 12 |
| 2022 | 3,013,017 | 48.7% | 12 of 12 |
| 2023 | 1,783,169 | Not reported | 12 of 12 |
| 2024 | 49,700 | 3.2% | 12 of 12 |
| 2025 | 497,391 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | 482,114 | Not reported | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDCO₂, 2025
96,831
US short tons. 2024: Not reported
SO₂, 2025
1
US short tons
NOx, 2025
46
US short tons
CO₂ per MWh, calculated
0.19 t
About 389 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 6137 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 4 | Natural Gas Fired Combustion Turbine | 88.2 | June 1991 |
| 5 | Natural Gas Fired Combustion Turbine | 88.2 | May 2002 |
| 6 | Natural Gas Fired Combustion Turbine | 235.5 | August 2025 |
| 7 | Natural Gas Fired Combustion Turbine | 235.5 | May 2025 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Southern Indiana Gas & Elec Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near A B Brown
More plants operated by Southern Indiana Gas & Elec Co
Questions about A B Brown
How much power does A B Brown produce?
A B Brown reported 497,391 MWh (497 GWh) of net generation in 2025. From January to July 2026 it reported 482 GWh, which is provisional.
Where is A B Brown?
A B Brown is in Posey County, Indiana, at 37.9053, −87.7150. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates A B Brown?
EIA-860M for August 2026 lists Southern Indiana Gas & Elec Co as the operator (EIA operator ID 17633). The operator is not always the owner.
When did A B Brown start operating?
Its first generator began operating in June 1991, according to EIA-860M.
Does InfraMap have power prices for A B Brown?
Yes. InfraMap has MISO day-ahead and real-time prices at 4 price nodes linked to A B Brown, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page