Abstract
The study aims to provide a comprehensive environmental life cycle assessment of electricity production from a steam power plant fuelled only by natural gas. LCA includes the complete phases of the gate to gate, from raw material acceptance until electricity produced as a gate to gate approach. The LCA study was performed using manual calculation and Open LCA 1.9, where the selected impact assessment methodology is CML. A Combined cycle steam power plant is used in generating electricity due to its efficiency by re-using flue gas from the gas turbine by a steam turbine. This LCA study divided all boundaries into four Subsystems: energy preparation package, water production package, electricity production, and support Subsystem. From the calculation, it was found that Acidification Potential (AP) is the most impact, and 50.22% comes from NOx as the most significant resource from the combustion chamber process, followed by Photochemical Oxidant Potential (POCP) and Global Warming Potential (GWP).
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