Carbon footprint: data collection, calculation and reporting
Start a corporate footprint assignment with the reporting entity, period, included sites and consolidation approach.
Build an inventory that another person can reconstruct
Start a corporate footprint assignment with the reporting entity, period, included sites and consolidation approach. Map fuel combustion, purchased energy and relevant value-chain activities against the selected accounting framework. A product footprint instead needs the defined product and life-cycle boundary. The useful deliverable is a traceable calculation and report: source quantities, units, factors, assumptions and exclusions must support the totals. A decorative certificate or a low number does not replace this evidence.
A missing fuel record changes the preparation plan
In a hypothetical inventory, electricity invoices are complete but a standby generator has no consolidated fuel record. Do not quietly treat the generator as zero emissions. Identify the operator and period, seek purchase or stock records and document the selected treatment of missing data. An unexplained estimate and a documented approximation are not equivalent. Record the gap and its effect on the result before presenting an apparently complete inventory to a customer or independent assessor.
Agree the handover and intended use
Preparation normally produces a source register, controlled calculation file, report and open-issues record. Agree whether the engagement also includes support for an independent assessment or a customer questionnaire; these are different tasks. If the objective is a reduction plan, retain the baseline and monitoring method. Buying offsets does not correct an incomplete inventory or itself prove a carbon-neutrality claim. Draft methodology updates are not automatically applicable rules; identify the published method used and review any additional reporting-programme requirements.
Preparation support and its limits
Kayra can support boundary definition, data mapping, calculation review and report preparation within an agreed consultancy scope. The organisation supplies and approves its underlying information. Independent assessment, programme acceptance and official decisions remain separate. These worked examples are hypothetical, not local customer events. No QRS or Kayra verification accreditation, fixed fee, guaranteed conclusion or universal legal obligation is asserted here.
Primary method sources and application limits
Updated: 3 October 2026. Use the authorised text of the selected published method and identify any additional reporting-programme requirements. If independent assurance is required, check the assessor’s actual activity and scope through the relevant official register before commissioning the work.
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