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The message arrives from procurement or sustainability: please share your carbon footprint and a supplier sustainability report. For many SMEs, that email feels sudden — even though large buyers have been preparing for it for years.
You do not need a perfect programme overnight. You need credible Scope 1 and 2 figures, a clear story on relevant Scope 3, and a report format your customer can actually use. Done well, this protects contracts and opens doors to new ones.
Why customers are asking now
Large companies must report value-chain emissions (their Scope 3). That category includes emissions from suppliers like you. Investor scrutiny, customer expectations, and EU reporting rules all push the same request down the chain.
This is usually not about you being in scope of CSRD yourself. It is about helping your customer meet their obligations and de-risk their supply base.
What happens if you ignore the request
Many buyers already score suppliers on sustainability readiness. Slow or incomplete answers can trigger follow-ups, temporary holds, or preference for competitors who already have data. Treat the request as a commercial deadline, not optional homework.
What data they typically need
- Scope 1: direct emissions you control (fuels, on-site combustion, process emissions).
- Scope 2: emissions from purchased electricity, heat, or steam.
- Relevant Scope 3: often purchased goods, upstream transport, and fuel- and energy-related activities — confirm the exact list with the customer.
Ask for their template or questionnaire early. Matching their format saves weeks of back-and-forth.
A practical response plan for SMEs
- Acknowledge the request and confirm the deadline and required scopes.
- Gather activity data you already have: energy bills, fuel logs, production volumes.
- Calculate emissions with a recognised method (GHG Protocol) and document assumptions.
- Deliver a short report plus the raw figures they asked for — not a 40-page brochure.
- Note what you will improve next year so the relationship stays forward-looking.
Cost without the consultancy shock
Traditional advisory projects can run into tens of thousands of euros. Many SMEs now use structured digital workflows to collect data, apply emission factors, and export customer-ready reports at a fraction of that cost — while keeping ownership of their numbers.
Standards that make your answer credible
The GHG Protocol remains the shared language for carbon figures. For broader SME disclosure, the VSME standard is designed to stay proportionate while still aligning with how larger buyers think about ESG. Using a recognised structure helps your data travel across customers.
Turning a request into an advantage
Suppliers who can answer quickly become easier to keep and easier to recommend. The same measurement work often reveals energy waste and process inefficiencies — savings that show up on the P&L, not only in a PDF.
If you want a structured path from first request to a reusable report, Sustainly is built for that SME workflow — without turning sustainability into a second full-time job.