article · Energy Science & Engineering
Mitigating carbon dioxide emissions from power generation requires deploying effective carbon capture systems. A comprehensive techno-economic evaluation was conducted to assess pre-combustion, post-combustion, and oxy-fuel combustion capture technologies integrated into natural gas power plants. Using process simulations and economic modelling, the options were analysed across key indicators including levelised cost of energy, carbon emission intensity, cost of carbon avoidance, investment costs, and net present value. A multi-criteria framework using dimensional analysis identified post-combustion capture as the most viable technology, achieving a cost factor of 0.85 and providing an optimal balance among efficiency, expense, and environmental performance. Oxy-fuel combustion proved least profitable due to high investment and production costs, while pre-combustion demonstrated higher emissions intensity and avoidance costs. These findings offer structured guidance for reducing costs in carbon capture deployment.
Power generation contributes around 40 percent of global carbon dioxide emissions. Identifying the most cost-effective and environmentally sound capture methods helps power plant operators and policy planners invest in feasible decarbonisation routes, facilitating a smoother transition towards lower-carbon energy systems.
The dimensional analysis evaluation framework can assist power plant developers, engineering firms, and energy planners in selecting viable carbon capture technologies for natural gas facilities. Based on process simulations, the research is at an applied assessment stage, indicating that future work must focus on optimizing configurations specifically for commercial-scale post-combustion deployment.
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ABSTRACT The imperative to mitigate anthropogenic CO 2 emissions from power generation plants, which account for approximately 40% of global emissions, necessitates developing and deploying carbon capture, utilization, and storage (CCUS) technologies. This study undertakes a comprehensive techno‐economic evaluation of three primary CO 2 capture technologies—pre‐combustion, post‐combustion, and oxy‐fuel combustion—integrated with natural gas power plants. Utilizing Aspen HYSYS design simulation and economic assessments, the technical and economic viability of each technology were investigated, considering key metrics such as levelized cost of energy (LCOE), carbon emission intensity (CEI), cost of carbon avoidance (COA), investment costs, production costs, net present value, and rate of return. A multi‐criteria evaluation framework incorporating dimensional analysis was employed to compare the technologies, and the results revealed post‐combustion capture as the most viable option with a cost factor (CF) value of 0.85, striking an optimal balance between efficiency, costs, and environmental impact. With minimized TIC and TPC, well below the conventional processes, this study produced a unique framework for reducing costs in CCS technology deployment. Conversely, oxy‐fuel combustion has huge drawbacks regarding low profitability as it was found to have the highest total investment cost (TIC) of $8,258,483.99 and annual production cost (APC) of $9,234,870. In contrast, a higher CEI of 0.05 tCO 2 /MWh and COA of $150.33/tCO 2 make pre‐combustion less environmentally friendly than the three technologies. The findings of this study provide critical insights to inform decision‐making in CCUS development, supporting a low‐carbon energy transition. Future research directions should focus on evaluating feasible configurations and optimizing post‐combustion capture technology for commercial‐scale deployment.
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DOI: 10.1002/ese3.2089
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