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Scope 3 Upstream
Category 1: Purchased Goods and Services
Upstream emissions from the production of goods and services purchased or acquired by your company.
GHG Protocol Reference
The following content is extracted from the GHG Protocol Corporate Value Chain (Scope 3) Accounting and Reporting Standard.
View original GHG Protocol Standard (PDF)Selko Emissions
Category 1
Selko Emissions
Category 1 is for many companies (especially in goods-heavy sectors) the most carbon intensive Scope 3 category. It encompasses all upstream emissions from purchased goods and services.
Emission Factor Methods
Tier 1
Supplier-specific
Primary data from suppliers on actual emissions
Tier 2
Average-data
Based on mass/units of goods (e.g., kg CO₂e per kg of material)
Tier 3
Spend-based
Based on spend data and EEIO emission factors
Methods range from primary data (left) to modeled estimates (right)