Wisconsin Power and Light Company (WPL) recently completed the installation of a Selective Catalytic Reduction (SCR) system at Edgewater Generating Station Unit 5. The SCR will further reduce nitrogen oxides (NOx) emissions from Unit 5 to comply with Wisconsin’s Reasonably Available Control Technology (RACT) requirements. Our previous projects met Phase I RACT requirements and the SCR project allows WPL to meet the Phase II RACT requirement which begins May 1, 2013.
Construction on the approximately $153 million investment began in September 2010 and the SCR was operational by the end of 2012.
With the completion of the SCR, approximately 65% of NOx emissions will be removed from Unit 5 per year as a result of the Phase I and II projects.
In July 2012, WPL filed a construction application with the Public Service Commission of Wisconsin (PSCW) for authority to install a scrubber/baghouse system to reduce sulfur dioxide (SO2) emissions from Edgewater Unit 5.
WPL anticipates a decision from the PSCW by the second quarter of 2013. If approved, construction is expected to begin in 2014 and be completed in 2016. Upon its completion, SO2 emissions from Unit 5 are expected to be reduced by approximately 90% per year from current levels.