A. B. Brown Generating Station
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 a 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 Vectren (formerly Southern Indiana Gas and Electric Company).
|A. B. Brown Generating Station|
A.B. Brown Generating Station in 2011
Location of the A. B. Brown Generating Station in Indiana
|Location||Marrs Township, Posey County, near Mount Vernon, Indiana|
|Commission date||Unit 1 (coal): March, 1979|
Unit 2 (coal): Feb, 1986
Unit 3 (gas): June, 1991
Unit 4 (gas): May, 2002
|Thermal power station|
|Primary fuel||Bituminous coal|
|Secondary fuel||Natural gas|
Combustion gas turbine
|Nameplate capacity||700 MW|
In 1979, Unit 1 was constructed with a dual-alkali scrubber to help reduce sulphur dioxide (SO
2) emissions. In 1986, was completed and also uses a dual-alkali scrubber. From 2001 to 2005, Vectren installed four selective catalytic reduction (SCR) devices on all of the coal-fired units, which successfully cut nitrogen oxide (NO
x ) emissions by 80 percent. In 2004, Vectren replaced an existing electrostatic precipitator at Unit 1 with a fabric filter. The investment increased the particulate matter removal efficiency to 99 percent at that unit.
The A. B. Brown Station ash management impoundment was formed by building a dam to block off the outlet of a natural ravine about 0.5 miles (0.8 km) from the Ohio river. The ash pond consists of two dams. The Lower dam (built in 1978) has been classified by the Indiana DNR as a Significant Hazard (State ID#65-7, permit #D-4405, rev 1). The Upper dam (constructed in two phases in 2002 and 2007) was not classified, but has a permit #FW-21909. Liquid wastes being sluiced into the pond include fly ash, bottom ash, boiler slag, FGD belt filter wash down and water sump wastes, pyrites, material removed from the coal pile run-off pond, plant floor drain wash downs, boiler chemical leaning wastes, reverse osmosis system rejects, and rainfall/runoff from the surrounding area. According to Vectren, no discernible amount of material has been removed from the pond since it first began operation in 1978.
- "Southern Indiana Gas and Electric Company". Statement by a Holding Company Claiming Exemption, Form U-3A-2. U.S. Securities and Exchange Commission. February 29, 1996. Retrieved July 14, 2008.
- "Existing Electric Generating Units in the United States, 2006" (Excel). Energy Information Administration, U.S. Department of Energy. 2006. Archived from the original on June 16, 2008. Retrieved July 14, 2008.
- White, Beth (May 30, 2006). "Vectren considers installing new pollution control equipment at AB Brown Power Plant". Channel 14 News. Retrieved July 14, 2008.
- Angila M. Retherford (2009). "Vectren - A.B. Brown Power Station and F.B. Culley Power Station Coal Ash Survey" (PDF). U.S. EPA. Archived from the original (PDF) on February 4, 2011. Retrieved December 6, 2009.