What does Scope 3 mean for SMEs in the supply chain, and how does it impact their ESG reporting?
Scope 3 emissions comprise all indirect greenhouse gas emissions across a company's upstream and downstream supply chain. For SMEs operating as suppliers, this means that major corporate clients subject to CSRD reporting requirements must incorporate their suppliers' emissions into their own disclosures, actively requesting carbon footprint data. A VS report featuring Scope 1, 2 and 3 accounting meets this requirement in full compliance with ESG standards.
What Are Scope 3 Emissions?
According to the GHG Protocol (Greenhouse Gas Protocol), greenhouse gas emissions are classified into three distinct scopes:
• Scope 1: Direct emissions from owned or controlled sources (e.g., company vehicles, heating systems)
• Scope 2: Indirect emissions from the generation of purchased energy (e.g., electricity, district heating)
• Scope 3: All other indirect upstream and downstream value chain emissions (e.g., suppliers, logistics, waste disposal)
Why Is Scope 3 Carbon Accounting Critical for SME Suppliers?
For companies subject to CSRD reporting regulations, Scope 3 greenhouse gas emissions frequently account for 70–90% of their total corporate carbon footprint. To comply with ESG reporting mandates, these larger enterprises must track these metrics—which is only possible if their SME suppliers deliver reliable greenhouse gas emissions data.
Which Scope 3 Categories Typically Apply to SMEs in the Supply Chain?
The most material Scope 3 categories for SME suppliers include:
• Category 1: Purchased goods and services
• Category 4: Upstream transportation and distribution
• Category 11: Use of sold products
• Category 12: End-of-life treatment of sold products
How Can SMEs Efficiently Respond to Corporate Scope 3 Data Requests?
By leveraging the VS Standard, SMEs can systematically measure, manage, and share structured carbon data (including Scope 1, Scope 2, and relevant Scope 3 categories). ESG Lift provides a hybrid carbon footprint calculator that computes emissions in alignment with the GHG Protocol and generates VS-compliant ESG reporting exports. This enables SMEs to streamline supplier sustainability questionnaires, turning weeks of work into hours.
Scope 3 emissions and the supply chain: What SMEs as suppliers need to know and how a VS report addresses inquiries from corporate clients subject to CSRD and ESG reporting requirements.