The Wisconsin Public Service Commission granted preliminary approval on March 20, 2013, to a proposal from Wisconsin Public Service Corp. (WPS) to install Regenerative Activated Coke Technology (ReACT™) on an existing coal-fired generating facility. The ReACT™ installation will evidently be the first commercial application of this technology in the United States, although sources indicate that it has successfully been used in Japan for many years. According to WPS, the system uses activated coke absorption to reduce sulfur dioxide, nitrogen oxides, mercury, and other emissions from the exhaust flow, and it can attain emission levels of natural gas-fired systems.