Iatan 2

The Iatan Power Station, just outside of Weston, MO, currently consists of a single 670 MW (net) unit that was placed in service in 1980. The second unit at the site, Unit 2, will generate 850 MW (net)  utilizing a single supercritical, pulverized coal-fired boiler of balanced draft combustion design and a single reheat steam turbine. The primary fuel for Unit 2 will be the same low sulfur coal from mines in the Powder River Basin area of Wyoming and Montana used in Unit 1. KCPL will arrange for coal freight service utilizing the existing rail infrastructure from the BNSF Railway.

Iatan Unit 2 will employ state-of-the-art technology to control emissions of nitrogen oxides, sulfur dioxide, mercury, and particulate matter. The planned air quality control system will include low NOx burners, overfire air, and a selective catalytic reduction system to manage NOx emissions, and fabric filters to manage emissions of particulates. A powdered activated carbon system will be installed to remove mercury from the boiler flue gas, if necessary. Emissions controls will include a wet flue gas desulfurization (scrubber) system that is designed to utilize a limestone slurry solution to remove SO2.

Iatan Unit 2 turbine generator will be connected through a generator step-up transformer to an existing 345 kV switchyard at the plant site, which connects directly to KCPL’s existing 345 kV transmission system. The existing switchyard will be expanded to support installation of generator step-up and start-up transformers for the Unit. The Unit also includes a new transformer for interconnection to a new 161 kV portion of the substation and a tie to the existing 161 kV transmission system nearby.

Under the Unit Power Purchase Agreements, MJMEUC is obligated to deliver Iatan 2 power and energy to the Unit Power Purchasers at the interconnection point with the KCPL 345 kV and 161 kV transmission systems. It is anticipated that the transmission services required to deliver Iatan Unit 2 power and energy to the Power Purchasers’ systems will be provided by the Southwest Power Pool, and possibly other transmission providers, pursuant to their respective tariffs and/or agreements with MJMEUC.

KCPL will serve as the plant operator and will provide routine maintenance activities. They will coordinate operations and maintenance of the two units for efficiency. Maintenance support for major shut-down work is expected to be performed by third parties. Of MJMEUC’s 100 MW ownership of the project, MoPEP has 30 MW, Independence City Power & LIght has 50 MW, and Columbia Water and Light has 20 MW.