American Electric Power and Buckeye Power Inc. plan to construct new emission control systems at their jointly owned Cardinal Plant in Brilliant, Ohio. When in operation, the selective catalytic reduction (SCR) systems will reduce nitrogen oxide (NOx) emissions on each of the plant’s three generating units by about 90%. Both companies are reducing NOx emissions as part of an effort to comply with new US Environmental Protection Agency regulations. Construction of SCRs for the three units is expected to be completed by May 2003. The new emission controls will be in operation during the summer ozone season. Cardinal Units 1 and 2 each have a generating capacity of 600 megawatts, while Unit 3 has a generating capacity of 630mw.