As Scope 3 emissions come under more scrutiny, distributors are being asked to map and disclose emissions across multiple supplier tiers—not just their direct vendors.
Challenges in Tiered Emissions Tracking
Inconsistent or missing carbon data from Tier 2 and Tier 3 suppliers
Freight and transport emissions that vary by route or mode
Complexities in calculating emissions for imported materials (especially from Asia or the EU)
Solutions and Tools
GHG Protocol Scope 3 Standard
Supplier questionnaires with carbon-specific metrics
Platforms like Sourcemap, EcoVadis, or Sustain.Life
Best Practices
Start with hotspot mapping: focus on top 10 materials by weight or spend
Use default values (e.g., ecoinvent) when vendor data is unavailable
Align with clients’ preferred LCA tools and disclosure formats
Distributor Action Plan
Train procurement on how to request emissions data upstream
Flag “high-opacity” SKUs in your own catalog
Develop baseline Scope 3 estimates by material class (tile, brick, float glass, etc.)
