Dynegy's Coffeen Plant: Honored for the best SO2 emissions rate among U.S. coal plants. The Coffeen plant has a SO2 emissions profile that is 99 percent better than the U.S. coal fleet average. The 915-megawatt power plant operates in Central Illinois and is over 50 years old. The Coffeen Plant uses low-sulfur Powder River Basin coal and added a wet scrubber in 2009.
Southwestern Electric Power Company's (SWEPCO) John W. Turk Jr. Plant: Honored for the best NOx emissions rate among U.S. coal plants. The Turk plant has a NOx emissions profile that is 79 percent better than the U.S. coal fleet average. The 600-megawatt ultra-supercritical power plant was built in Fulton, Arkansas, by SWEPCO, a unit of American Electric Power, and began commercial operation in 2012.
Longview Power LLC's Longview Power Plant: Honored for the lowest heat rate among U.S. coal plants. The Longview plant operates at a level of efficiency 15 percent better than the U.S. coal fleet average. Longview's best-in-class heat rate of 9,003 Btu per kilowatt hour in 2015 continues to improve, and the company's current efficiency performance is on track to be well below 8,900 Btu per kilowatt hour. The 705-megawatt supercritical power plant located in Maidsville, West Virginia, was commissioned in 2011.
Mississippi Power's Kemper County Energy Facility: Honored as Carbon Capture, Use and Storage Pioneer. The 582-megawatt Kemper facility located in Kemper County, Mississippi, employs Transport Integrated Gasification technology that is expected to reduce CO2 emissions by 65 percent. Judges applauded the facility's innovation in the areas of ash removal and CO2 separation, noting "the technology holds great promise for future new electric power plants."
NRG Energy and JX Nippon Oil & Gas Exploration's Petra Nova Carbon Capture Project: Honored as Carbon Capture, Use and Storage Pioneer. The Petra Nova project demonstrates commercial-scale deployment of post-combustion carbon capture and is designed to capture approximately 90 percent of CO2 emissions from a 240-megawatt equivalent slipstream of flue gas from the W.A. Parish plant in Thompsons, Texas, southwest of Houston. Judges commended the project's innovative capture technology, observing that it "represents the first large-scale retrofit of an existing coal-fired power plant."