In order to meet future energy needs, E.ON U.S. LLC and other project participants are seeking approvals from regulators to build a new pulverized coal-fired unit at the existing generating station located in Trimble County, Kentucky.

The Trimble County Station, with 80 full-time employees, has one 514-megawatt (net) coal-fired unit which went commercial in 1990. Since 2002, the station has added six natural-gas-fired, simple-cycle combustion turbines with a combined capacity of more than 900 megawatts (net) for peak load demand.

The existing coal-fired unit at the Trimble County plant is jointly owned by the Illinois Municipal Electric Agency (IMEA,12.12% of generating capacity), the Indiana Municipal Power Agency (IMPA, 12.88% of generating capacity) and E.ON U.S. (balance). The same three parties executed a participation agreement on February 10, 2004, outlining their rights and responsibilities during construction of the new unit.


Description of Project


The proposed Unit Two would have a nominal power output of 750 MW. The current timeline — subject to obtaining internal, environmental, regulator, and all other required approvals in a timely manner — calls for construction to begin during 2006 and conclude by spring 2010.

Proposed New Infrastructure
The new unit will consist of one pulverized-coal boiler,associated control equipment and new fly ash handling equipment. The boiler will be fired primarily by eastern bituminous coal delivered to the existing barge unloading facility located on site. The new coal-fired boiler will utilize high efficiency, supercritical pulverized coal technology to generate steam that, in turn, will be used to power a 750 MW (net) generating unit. Unit Two will provide baseload power to the electric grid on a continous basis.

Environmental Considerations
Unit Two will employ Best Available Control Technologies (BACT) to control emissions:

• Low-NOx burners and selective catalytic reduction (SCR) to control NOx;
• Electrostatic precipitators (ESP) to control emissions of particulates; and
• Forced-oxidation wet limestone flue gas desulfurization (FGD) to control SO₂.

Unit Two will be constructed on an existing power plant site,and will utilize existing water intake structures and coal/limestone unloading facilities — which will minimize construction impacts on the Ohio River.