This paper assesses the three leading technologies for capture of CO2 in power generation plants, i.e., post-combustion capture, precombustion capture and oxy-fuel combustion. Performance, cost and emissions data for coal and natural gas-fired power plants are presented, based on information from studies carried out recently for the IEA Greenhouse Gas R&D Programme by major engineering contractors and process licensors. Sensitivities to various potentially significant parameters are assessed. (C) 2006 Elsevier Ltd. All rights reserved.