Intregated Combine flue Gas CCS System on Subcritical Coal-Fired Power Plant
Keywords:
carbon dioxide emission, coal-fired power plant, combine flue gas, decarbonization, levelized cost of electricity, net zero emission, post-combustion carbon captureAbstract
Indonesia faces a major challenge in aligning its power sector with the national goal of achieving Net Zero Emissions (NZE) by 2060. The country’s continued reliance on coal for base load electricity due to its low cost and domestic abundance presents a significant barrier to decarbonization. As global energy systems shift toward low-carbon sources, transitional technologies such as Post-Combustion Carbon Capture (PCC) are essential to reduce emissions while maintaining energy reliability. This study evaluates the technical and economic feasibility of applying PCC technology at a subcritical Coal-Fired Power Plant (CFPP) by integrating flue gas from two 315 MW units. Each unit emits flue gas containing approximately 14.3% CO₂, with a capture target of 90%. The research uses literature review, case studies, and Aspen HYSYS V12 simulation to model the PCC system and estimate both capital (CAPEX) and operational (OPEX) costs. Results show that integrating two units into a single PCC system reduces CAPEX by 8.5% compared to separate systems. Additionally, the Levelized Cost of Electricity (LCOE) drops from 103.6–105.2 USD/MWh in individual configurations to 88.6 USD/MWh in the integrated scenario, indicating better economic performance for large-scale CCS deployment.
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