A sustainability data request arrives: a spreadsheet with 60 columns, an automated invitation to EcoVadis or Sedex, or a short email asking for your carbon footprint and environmental policy. Whatever the form, the work is the same.
| First question | Short answer |
|---|---|
| Why now? | The customer reports on its supply chain, usually under CSRD, and its auditors need figures that trace back to suppliers. |
| What do they need? | Four things: emissions data, environmental policy and targets, social and governance basics, and the documents that evidence them. |
| Platform or spreadsheet? | Check. Platforms have structured flows and scoring and usually renew annually; spreadsheets are the customer's own design. |
| What do I do first? | Acknowledge receipt within a day or two with a realistic completion date. |
| What if I lack data? | Say what you do not measure and when tracking will start. Do not guess. |
Why the request is arriving now
Legislation. The EU's Corporate Sustainability Reporting Directive requires large companies to report on their environmental and social impact in detail, including their supply chain and particularly Scope 3 emissions — what suppliers emit producing the goods and services the customer buys.
The customer has a reporting deadline and auditors who need figures that trace through you. Without your data they estimate, flag a gap, or consider a supplier who can provide it.
Beyond CSRD, customers face investors, industry standards bodies, and their own customers. The request is not a one-off. Data transparency is now part of the procurement relationship.
What they are asking for
Long questionnaires reduce to four areas.
Emissions data. The core of most requests. The customer accounts for Scope 3 Category 1 (purchased goods and services) and needs the greenhouse gas emissions associated with what you supply: total annual emissions, per-unit intensity, or a product carbon footprint. An estimate from industry averages is better than nothing; primary data is increasingly required.
Environmental policy and targets. A written policy, reduction targets, efficiency measures. The customer shows its auditors that suppliers manage these issues in a structured way. A short documented policy counts; informal intentions do not.
Social and governance basics. Labor practice, health and safety records, diversity figures, anti-corruption policy. Depth varies by customer and sector. The answers exist; the information needs locating.
Evidence and certificates. Attachments: policy documents, ISO certificates, energy audit reports, safety records. Include ISO 14001, ISO 45001, or similar if held. Otherwise document what exists.
The ESG response checklist covers the full data set across EcoVadis, CDP, and common custom questionnaires.
Working through the request
Step 1: acknowledge receipt
Within a day or two, even if the deadline cannot be met. The procurement contact has usually forwarded the request from a sustainability team, and silence reads as non-engagement. Confirm receipt; give a realistic completion date.
Step 2: identify format and scope
Platform assessment (EcoVadis, Sedex, IntegrityNext) or custom spreadsheet? Platforms have structured submission and scoring; spreadsheets have no standardization. Also establish whether this is a one-off data pull or an ongoing relationship. EcoVadis assessments renew annually; set-up once makes later rounds faster.
Step 3: map the questionnaire against what you have
Section by section, mark each question: data you have, data you can get, data you do not have.
Have: energy bills (kWh), headcount, accident records, HR policies, ISO certificates. Usually more than expected.
Can get: estimates, supplier figures, industry benchmarks. The energy provider can supply annual consumption. Emission factors are published. The Scope 3 data guide explains what is acceptable without primary data.
Do not have: state what is not measured and what is being done about it. Customers expect transparency, not completeness.
Step 4: get the numbers
Energy and emissions. Electricity bills: kilowatt-hours × grid factor = Scope 2. Scope 1 is direct fuel combustion: gas boilers, vehicles, generators. The free carbon calculator produces both from bills and fuel records.
Environmental policy. If none exists, a one-page document stating commitments, responsibility, and what is tracked. The ESG policy template guide provides one to download.
Social data. HR records: headcount, gender split, training hours, accident frequency rate. Usually already tracked for internal or legal reasons.
Governance. Anti-bribery policy, code of conduct, supplier policy. If undocumented, basic one-page versions. They show the risks have been considered.
Step 5: handle gaps
For data you do not have: "We do not currently measure [X]. We plan to implement tracking by [date]." Do not guess. Customers understand that smaller suppliers are earlier in data maturity. What damages the relationship is an inaccurate answer that fails an audit. Missing ESG data covers the options.
Step 6: compile and submit
Gather the evidence documents first. Label them clearly: "Environmental Policy v1 March 2026", not "policy_FINAL_v3b". On a platform, upload documents to the relevant sections. In a spreadsheet, add a tab with document references. Submit on or before the agreed date. If late, say so first.
When several customers ask at once
With more than a handful of customers, questionnaires arrive in the same quarter in different formats with overlapping questions. The only efficient answer is a central data store: emissions, policies, headcount, certificates in one place, so each questionnaire is extraction rather than assembly. Responding to multiple ESG questionnaires covers platform accounts and reuse.
What to track from now
Treat the first request as the setup cost for every later one. Store and update annually rather than reassemble:
- Annual electricity consumption (kWh) and cost
- Annual gas and fuel consumption
- Headcount with gender breakdown
- Lost-time accident frequency rate
- Current environmental and social policies with version dates
- Certifications with expiry dates
With these on file, most questionnaires are answered from records.
Common mistakes
Ignoring the request. Customers track response rates. Persistent non-response affects procurement decisions.
Answering without evidence. "Yes" to a policy question without a policy document is a common audit failure.
Treating it as a one-off. The questionnaire returns next year. Updated data on file turns a week into an hour.
Overcomplicating the first response. A clear, evidenced response to 70% of the questions beats a rushed, unsupported response to all of them.