At 2,233 megawatts of capacity, the W. H. Sammis Plant, is FirstEnergy’s largest power generation facility in Ohio. Situated along the Ohio River in Stratton, it is the site of one of the largest air quality control retrofits in U.S. history. The five-year, $1.8 billion environmental project included the installation of scrubbers and selective catalytic reduction equipment designed to reduce emissions of sulfur-dioxide by 95 percent, nitrogen oxides by up to 90 percent, and mercury by about 75 percent. The retrofit was named Construction Project of the Year by Platts Global Energy Awards in 2010 and received an honorable mention from Power Engineering magazine.