Vectren said it is in a position to largely comply with new Environmental Protection Agency rules regulating mercury and other emissions without "significant additional" customer impact.

Vectren has nearly 1,300 MW of generating capacity of which 1,000 MW is coal-fired. Vectren has two power plants: F.B. Culley in Warrick County and A.B. Brown. The utility shares ownership of Warrick Unit 4, a 150 MW unit, with Alcoa. 

Since 2001, Vectren said it has installed more than $410 million in emissions control equipment on its predominantly coal-fired generation fleet in southwestern Indiana. The company said its fleet is now 100 percent scrubbed for sulfur dioxide, 90 percent controlled for nitrogen oxide and "substantially controlled" for particulate matter and a "significant portion" of mercury.

"Although we are still reviewing the complete details of the EPA's report, we are pleased our previous investment in air quality for this region will help to address these new air quality rules," said Carl Chapman, Vectren's president and CEO.

Read more news and features on emissions controls.

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