Discussion on the Life Cycle of Greenhouse Gas Emissions from the 2021 UNECE LCA Report and Korean LCI DB for Electricity Generation

Objectives : The greenhouse gas (GHG) emissions of coal, natural gas, wind, solar, hydropower, and nuclear electricity generation mentioned in the United Nations Economic Commission for Europe (UNECE) LCA report were discussed. Korean GHG calculated from database (DB) national life cycle inventory (LCI), compared with international average, then aim this study was to discuss necessity updating internationalizing LCI DB.Methods coal power, wind onshore solar hydropower UNECE analyzed, climate change, that is, emissions, among environmental impact assessment categories per 1 kWh functional unit DB by applying global warming potential GHGs.Results Discussion (452 g CO<sub>2</sub>-eq./kWh), (6.3 power (53 CO<sub>2</sub>-eq./kWh) presented within range results report. However, exceeded average highest ranges. hard bituminous 1,351 CO<sub>2</sub>-eq./kWh 1,160 CO<sub>2</sub>-eq./kWh, respectively, which higher than value, 1,095 CO<sub>2</sub> eq./kWh (China). Analysis plants showed coal-fired use more brown is known be relatively low-quality produce less anthracite plants. In plants, it necessary check whether generated processes other combustion process significant.Conclusion Electricity accounts largest portion when calculating therefore, accurate data necessary. Korea, highly dependent on production, should update its as soon possible increase competitiveness a basis realizing carbon neutrality 2050.