Construction is nearly completed at the Columbia Energy Center, near Portage, Wisconsin, where Alliant Energy’s Wisconsin utility is installing baghouse/carbon injection and scrubber systems on Units 1 and 2.
The baghouse/carbon injection and scrubber system will reduce mercury (Hg) emissions for compliance with Wisconsin’s mercury rule and sulfur dioxide (SO2) emissions to comply with state and federal SO2 reductions. They will also provide the additional benefits of capturing fine particulate matter and reducing sulfuric acid mist.
Construction on this approximately $630 million project began in early spring of 2012. WPL continues to anticipate commercial operation of the controls by the end of 2014.
In April 2013, Alliant Energy announced that it plans to install a Selective Catalytic Reduction (SCR) system at Columbia Energy Center Unit 2 to reduce NOx emissions. Alliant Energy currently expects to file an application to gain regulatory approval of the project in the second quarter of 2014.