Witkowski and Majkut investigated 13 different CO 2 compression concepts for post-combustion capture from a 900 MW pulverised coal-fired power plant including heat integration. All cases considered compression from 1.51 bar to 153 bar. Some of their findings include a reduction in power by increasing the number of compression stages, increasing power with higher inter-stage temperatures, and also that a compression path from the initial pressure to an intermediate pressure followed by liquefaction and pumping to the final pressure offers significant reduction in compression power. However, the authors do not include a quantification of the compression power required for the refrigeration cycle.