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Scope 3 spend-based estimate
Estimate supply-chain emissions from spend and emission factors by category.
Sustainability & ESGHow it's worked out
- Emissions = spend × factor ÷ 1000 (t CO₂e)
- Factors in the same currency and price year as spend (for example from EEIO tables)
NoteSpend-based estimates are a starting point; replace the largest categories with supplier-specific data over time.
Source: GHG Protocol Corporate Value Chain (Scope 3) Standard; US EPA USEEIO factors
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