Make the claim reviewable.
Use these sixteen checks to connect a fuel claim with its delivery records, calculation basis and supporting evidence.
Author companion guidance for reviewing a fuel claim. Completion records your review; it does not certify fuel eligibility or regulatory compliance. Record a reason when a check is not applicable.
For each check, record a document reference and review status. Assign missing or inconsistent evidence to an owner, with a due date and closure record. Apply the checks proportionately to the fuel and the purpose of the claim.
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Identify the claim and delivery
Establish what the evidence is intended to support and which delivery it concerns.
01 Intended claim and reporting period
Identify the intended use, reporting framework and period. Keep physical, regulatory and commercial claims distinguishable.
02 Ship and delivery reference
Record the ship's IMO number, delivery port and date, and bunker delivery note reference.
03 Supplier and evidence issuer
Identify the supplier and each document issuer, with a contact for clarification or correction.
04 Batch and consignment links
Cross-reference batch or consignment identifiers across the delivery, claim and supporting documents.
05 Quantity and measurement basis
Reconcile delivered quantities, units and measurement records. Identify any unexplained difference.
06 Product and blend description
Record fuel description, blend fractions and whether the fractions use a mass or energy basis.
Trace the fuel characteristics
Check that the evidence route supports the particular characteristics being claimed.
07 Feedstock and production pathway
Link feedstock, origin and production-pathway claims to their evidence and relevant assessment.
08 Chain of custody and allocation
Identify the applicable chain-of-custody method and references supporting allocation and reconciliation.
09 Sustainability evidence, where applicable
Record the PoS or other accepted evidence, quantity covered and any pending delivery date. Explain non-applicability.
10 Certification scope and validity
Check scheme recognition, operator certificate, covered activities and fuels, and validity for the claim.
11 GHG value, boundary and unit
Identify the claimed value, gCO2e/MJ or other unit, and whether the boundary is WtT, TtW or WtW.
Review the method and close discrepancies
Preserve the assumptions, verification limits and responsibility for corrections.
12 Method, factors and energy basis
Record the method/version, default or actual factors, calorific value, greenhouse gases and GWP basis.
13 Onboard conversion assumptions
Identify the engine/converter basis and relevant CH4, N2O and methane-slip treatment.
14 Verification scope and conclusion
Record the reviewer or verification body, date, purpose, conclusion and unresolved qualifications.
15 Attribute allocation and prior use
Reconcile claimed quantities and prior allocations. Test for unsupported duplicate claims under the relevant rules.
16 Correction owner and closure
Assign material discrepancies, action deadlines and review authority. Retain document versions and closure evidence.
Resolve the gap before relying on the claim.
A completed checklist records the work performed. It does not establish that a fuel is eligible for a particular accounting treatment or that a verifier has accepted it. Keep qualifications visible until the responsible reviewer has resolved them.
Read what evidence should follow the fuel, check the emissions boundary, or compare EU ETS and FuelEU requirements.
Sources and review
Published and sources reviewed 14 October 2026. Official guidance supports the regulatory explanations; the practical controls and examples are original companion guidance. The Carbon Basel Accord remains an independent policy proposal.
- European Commission: FuelEU Maritime questions and answers
- European Commission: FuelEU enforcement guidance, June 2026, chapter 2 (PDF)
- IMO: 2024 LCA Guidelines, resolution MEPC.391(81), especially sections 3 and 8 (PDF)
- European Commission: recognised voluntary and national certification schemes
Rules and their application can change. Recheck the linked primary sources for the relevant reporting year and circumstances.