A public-sector tender arrives with sustainability and social-value requirements, some scored and some pass/fail. A technically strong bid can lose on them. Before writing, establish which requirements are gates and which are scored, and what evidence each one needs.
| First question | Short answer |
|---|---|
| Where does ESG appear in a tender? | Twice: at selection (pass/fail minimums) and at award (scored criteria). |
| What are the usual pass/fail items? | Mandatory policies, a modern slavery statement, no relevant convictions, sometimes ISO 14001 or 45001 or equivalent measures. |
| What is scored? | Carbon and environmental commitments, social value, and how you will deliver this contract sustainably. |
| What scores well? | Specific, measurable, contract-linked commitments. Generic statements score nothing. |
| Can an SME compete? | Yes. Requirements are written down, and SMEs often have a real edge on local and social value. |
Links checked 18 July 2026.
Why public tenders ask about ESG
Public bodies spend public money and are required, by policy and often by law, to buy for environmental and social value, not only lowest price. The names vary: Green Public Procurement, sustainable procurement, social value. For a bidder it means ESG criteria are built into the tender, some as minimum requirements to qualify and others as scored criteria that affect ranking.
Unlike a private customer's questionnaire, tender ESG requirements are written down explicitly: the documents state what is assessed and how it is weighted. Reading them carefully is the advantage.
The two stages
Selection or qualification: pass/fail
Before scoring, minimum requirements must be cleared:
- Mandatory policies — environmental, health and safety, equality and diversity, sometimes a supplier code of conduct
- Modern slavery — a statement or confirmation of compliance
- No exclusions — no convictions for relevant environmental or labor offenses
- Certifications — some tenders require ISO 14001, ISO 45001, or equivalent, or evidence of equivalent measures
A missed mandatory item excludes the bid regardless of price or quality. Read the selection criteria first.
Award: scored
- Carbon and environment — emissions, reduction commitments, and how the contract's environmental impact will be minimized. Some tenders require a carbon reduction plan.
- Social value — local employment, apprenticeships, community benefit, support for other SMEs, fair work.
- Sustainable delivery — contract-specific commitments: low-emission delivery, waste reduction, sustainable materials.
Scored criteria reward specific, credible commitments tied to the contract. "We are committed to sustainability" scores nothing. "We will deliver using [X], reducing [Y], measured by [Z]" scores.
The evidence buyers want
- Real policies — signed, dated, sized to the company
- Carbon data — a footprint and, where required, a reduction plan with actual targets; the carbon calculator gives a baseline
- Certifications — current and in scope, or a credible account of equivalent measures
- Contract-linked commitments — what you will do on this contract, measurably
- Track record — examples of delivering the same elsewhere
How SMEs compete
Public procurement is often required to be SME-friendly.
- Read the ESG criteria before writing. Note every mandatory item and every scored one with its weighting.
- Clear the mandatory items first. Policies and statements in place.
- Make specific, honest commitments on the scored criteria, tied to the contract and measurable.
- Show local and social value. Local jobs and community roots are a genuine SME advantage.
- Reuse the evidence. Policies, carbon data, and certificates built for customer questionnaires answer most tender ESG questions; see the response system guide.
What not to do
- Do not overpromise for points. Public contracts often require reporting against ESG commitments during delivery.
- Do not invent carbon figures or a reduction plan you will not follow. They can become contractual and monitored.
- Do not submit generic statements on scored criteria.
- Do not miss a mandatory item. One overlooked pass/fail requirement sinks the bid.
The bottom line
ESG in public tenders is mandatory items to qualify and scored criteria — carbon, social value, sustainable delivery — that shape ranking. The requirements are written down. Read them first, clear the mandatory ones, make specific and honest contract-linked commitments on the rest, and reuse the ESG groundwork built elsewhere.
Official References
- European Commission — Green Public Procurement criteria
- UK PPN 006 — carbon reduction plans in major government contracts