What should we check ourselves before an external verifier looks at our emissions?
Run the checks a verifier would: totals match the invoices, units are right, factors are from the right year, every month is there and estimates are labelled. A one-day internal review usually finds the errors that would otherwise come back as findings and cost a second round.
The checklist
- Twelve months of bills and invoices for every source.
- Units: kWh not kVAh, litres not kg, SCM not MMBTU unless converted.
- Factors: source and year stated.
- Fuel used, not just bought.
- Estimates marked with the method.
Sense checks
- Emissions per tonne of output against last year.
- Litres per unit for DG sets.
- Fuel per tonne of steam for boilers.
Who does it
Someone who did not prepare the figures, even a colleague from accounts.
What Senseible does here
Senseible keeps every figure linked to its source invoice or bill with a fingerprint, so a verifier can trace a total back to the documents it came from.
Sources: ISO 14064-1, 14064-3 and 14067 (iso.org), GHG Protocol Corporate Standard, GHG Protocol standards
Last reviewed 2026-10-22.