Understanding CO₂e requests — Case #2
Carbon attestation for tenders: what is actually requested
A carbon criterion in a tender does not necessarily mean a full carbon audit is required. In most cases, buyers want a comparable CO₂e indicator across candidates, usable for scoring or internal documentation.
1. Why carbon appears in tenders
Environmental criteria are progressively introduced into public and private tenders. This comes mainly from responsible procurement policies and the need to document the environmental impact of suppliers.
The real purpose of a carbon criterion
- compare candidates on a common indicator
- document a purchasing decision
- support internal ESG requirements
- anticipate future expectations
2. Scoring criterion vs regulatory obligation
In most tenders, carbon is a scoring criterion or an informative element, not a regulatory requirement. The distinction matters: a scoring criterion often accepts a coherent estimate, while a regulatory obligation requires a precise normative framework.
Most common case
- weighted environmental criterion
- indicator requested for comparison
- document attached to the bid
- no method imposed
Less common case
- explicit ISO requirement or external audit
- full carbon footprint requested
- detailed technical evidence required
- regulatory publication expected
3. What buyers actually expect
In a tender, the carbon document should be readable, comparable and verifiable. The goal is not maximum scientific precision, but consistency across candidates.
Generally accepted format
- aggregated CO₂e result
- coverage year and issue date
- declared method
- identifiable PDF document
- clear limitation statements
- verification elements
4. When an indicative attestation is enough
An indicative attestation is usually sufficient when the carbon criterion is used to differentiate offers or document a decision. It becomes insufficient only when the specification explicitly requires an audited standard.
- non-eliminatory environmental criterion
- limited weight in the final score
- no imposed standard
- request for an indicative indicator
5. When a full carbon footprint becomes necessary
A full carbon footprint is required only when the contracting authority explicitly demands a normative framework or external assurance. This remains minority in standard tenders, but can appear in highly regulated sectors.
6. Frequently asked questions (tenders)
Is it disqualifying not to have a full carbon footprint?
In most cases, no. The carbon criterion is used to compare offers. A coherent estimate is often sufficient when clearly presented.
Can we provide a spend-based estimate?
Yes, when no specific method is imposed. The condition is to clearly state the method and its limitations.
Why are carbon criteria becoming common?
Organizations need to document responsible procurement decisions and anticipate future ESG expectations, which leads to the progressive inclusion of CO₂e indicators.
Respond fast to a tender with a clear document
When a carbon indicator is requested in a tender, the objective is usually a comparison across candidates. A standardized, indicative attestation lets you respond without overbuilding the process.