A We Energies coal-fired power plant in Wisconsin is set to launch a carbon dioxide capture project. The plant will capture 3% of its CO2 using a technology provided by Alstom. Once the CO2 is captured, it will be released back into the atmosphere, rather than stored. The CO2 capture process employed at the plant will use chilled ammonia. The process works after the coal is burned in a boiler, where ammonium carbonate absorbs about 90% of the CO2 and forms ammonium bicarbonate; it is then separated at a high pressure and released into the air.