Cases — 4338675

As of Oct 2, 2026.

Activity name

DUKE ENERGY - ACO

Case number

05-2015-5003

Case name

DUKE ENERGY - ACO

Region code

05

Fiscal year

2015

Activity type code

AFR

Activity type desc

Administrative - Formal

Activity status code

FOI

Activity status desc

Final Order Issued

Activity status date

2014-10-30

Lead agency

EPA

Case status date

2014-10-30

Voluntary self disclosure

false

Multimedia flag

false

Summary text

U.S. EPA Region 5 issued an Administrative Consent Order (ACO) to Duke Energy Indiana, Inc., Gibson Station to resolve violations of the Clean Air Act (CAA). EPA alleged that Duke exceeded opacity limits for all 5 fossil fueled steam generating units at it's Gibson Station in violation of it's Title V permit, New Source Performance Standards for Fossil-Fuel-Fired Steam Generators at 40 C.F.R. Part 60, Subpart D (for Unit 5 only), and the Indiana State Implementation Plan provisions. EPA issued a NOV/FOV to Duke on June 23, 2011 and July 16, 2013. The ACO requires Duke to install PM CEMS at each of the fossil fueled steam generating units at Gibson Stations (Units 1 thru 5) on or before December 31, 2014. The installation of PM CEMS cost Duke $2 million. Additionally, Duke completed upgrades to their EPS at a cost of $10 million.

Created at

2026-10-02T02:02:59.061315+00:00

Updated at

2026-10-02T02:02:59.061315+00:00

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