A set of 13 US based experts in post‐combustion and oxy‐fuel combustion CO2 capture systems responded to an extensive questionnaire asking their views on the present status and future expected performance and costs for amine‐based, chilled ammonia, and oxy‐combustion retrofits of coal‐fired power plants. This paper presents the experts' responses for technology maturity, ideal plant characteristics for early adopters, and the extent to which R&D and deployment incentives will impact costs. It also presents the best estimates and 95% confidence limits of the energy penalties associated with amine‐based systems. The results show a general consensus that amine‐based systems are closer to commercial application, but potential for improving performance and lowering costs is limited; chilled ammonia and oxy‐combustion offer greater potential for cost reductions, but not without greater uncertainty regarding scale and technical feasibility.
