Abstract
Abstract: Oxy-coal steam electric plants are a third option for capturing CO 2 , an alternative to air-fired combustion with post-combustion CO 2 capture, and gasification/combined cycle power plants with pre-combustion CO 2 capture. The decision on which technology to deploy will largely be made on a comparative cost basis. Comparable costs estimates for the three technology options indicate that oxy-coal with CO 2 capture may out-perform the other two options on capital cost, levelized cost of electricity, and cost of CO 2 emissions avoided. The analysis must be tempered by the fact that costs for oxy-coal steam electric power plants embody significant uncertainties associated with scaling the air separation and CO 2 purification technologies and with designbasis specification for CO 2 purity delivered to CO 2 transport/storage.
Published Version
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