Climate-zone-based Techno-Economic Assessment of Different Carbon Capture Technologies for Coal-Fired Power Plants

Abstract

As fossil fuels are consumed and proven reserves exist, reducing carbon emissions is crucial to ensuring global energy security. It is imperative to reduce CO2 emissions from coal-fired power plants, which can be done most effectively through capturing and storing CO2 (CCS). Contrary to other aspects of power generation, CCS technologies have not been investigated in terms of their sensitivity to climate zones. Having that information helps decision-makers minimize carbon emissions by making long-term plans. Therefore, in this study, a techno-economic assessment (TEA) model was developed for coal-fired power plants using post- and oxy-fuel combustion CCS technologies. A comparison of minimum and maximum values reveals that rising altitude, as reflected in changes in ambient pressure, decreases avoided CO2 costs by 8% for post-combustion technology and 3% for oxy-combustion technology. It also reveals an increase in temperature reduces post-combustion costs by 10.5% and oxy-fuel costs by 5.8%. © 2023 Elsevier B.V.