Measuring Scope 3 emissions is crucial for a comprehensive understanding of an organization's total greenhouse gas (GHG) footprint, which allows the effective carbon management. While Scope 3 emissions account for more than 75% or more of a corporate’s GHG emissions, they are not yet accurately and comprehensively measured. Scope 3 measurement is complex and resource-intensive. Therefore, small and medium-sized enterprises (SMEs) without sufficient capacity for direct measurement rely on some industry-average emissions factors provided by third-party organizations. To assist SMEs’ responses towards diverse ESG disclosure requests, we have developed a highly detailed and comprehensive Environmental Extended Input-Output (EEIO) table segmented into 388 distinct sectors, including disaggregation of the power sector and road transport sectors. This offers the highest granularity for energy and non-energy emissions in Korea. By applying EEIO analysis, this study estimates and traces Scope 3 emissions in Korea. Additionally, this fine-grained approach allows for a more precise attribution of indirect emissions associated with various economic activities, informing a sector of the hotspot regarding value-chain emissions measurements. Furthermore, the developed emissions factors can be used as spend-based scope 3 emissions calculation.

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# Location: E2 1501

# Presenter: prof. Hana Kim, KAIST

Measuring Scope 3 emissions is crucial for a comprehensive understanding of an organization's total greenhouse gas (GHG) footprint, which allows the effective carbon management. While Scope 3 emissions account for more than 75% or more of a corporate’s GHG emissions, they are not yet accurately and comprehensively measured. Scope 3 measurement is complex and resource-intensive. Therefore, small and medium-sized enterprises (SMEs) without sufficient capacity for direct measurement rely on some industry-average emissions factors provided by third-party organizations. To assist SMEs’ responses towards diverse ESG disclosure requests, we have developed a highly detailed and comprehensive Environmental Extended Input-Output (EEIO) table segmented into 388 distinct sectors, including disaggregation of the power sector and road transport sectors. This offers the highest granularity for energy and non-energy emissions in Korea. By applying EEIO analysis, this study estimates and traces Scope 3 emissions in Korea. Additionally, this fine-grained approach allows for a more precise attribution of indirect emissions associated with various economic activities, informing a sector of the hotspot regarding value-chain emissions measurements. Furthermore, the developed emissions factors can be used as spend-based scope 3 emissions calculation.