Techno-Economic Analysis of CCS Implementation for Decarbonization at the Tidore Coal-Fired Power Plant
Keywords:
ccs, MEA, MDEA, Piperazine, Coal-Fired Power Plant, Energy Penalty, Economic Analysis, LCOEAbstract
This study presents a techno-economic analysis of Carbon Capture and Storage (CCS) implementation at the Tidore Coal-Fired Power Plant (PLTU Tidore) using post-combustion technology with amine-based solvents. Two solvent formulations—30% monoethanolamine (MEA) with 10% piperazine (PZ) and 30% methyldiethanolamine (MDEA) with 10% PZ—were evaluated through process simulation in Aspen Plus to assess their technical performance and economic feasibility. The MDEA + PZ system demonstrated lower regeneration energy requirements (4.261 MJ/kg CO₂) compared to MEA + PZ (4.315 MJ/kg CO₂), with comparable CO₂ product purity of 99%. Despite MEA's higher absorption reactivity, MDEA showed superior energy efficiency and operational stability. Economic analysis revealed that the CCS investment cost reached IDR 139.17 billion, with annual O&M costs of IDR 65.74 billion. Under a carbon pricing scheme of USD 100/ton CO₂ and LCOE of IDR 2,486/kWh, the project achieved financial viability with a Net Present Value (NPV) of IDR 31 billion, Internal Rate of Return (IRR) of 9.79%, Benefit-Cost Ratio (B/C) of 1.00, and a payback period of 8 years. Additionally, scenario analysis demonstrated that increasing carbon pricing significantly lowers the required LCOE for breakeven, enhancing the attractiveness of CCS.
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