Our verifier asked for a data flow diagram. What should it show?
A simple picture of how each emission figure is produced: where the data starts (meter, invoice, register), who records it, where it is stored, how it is calculated and who checks it. One page is enough for a small company. It helps the verifier choose what to test.
One line per source
- Source: grid power, diesel, coal, refrigerant.
- Starting document: bill, invoice, issue register.
- Who enters it and where.
- How it is converted to CO2, and with which factor.
- Who reviews it before reporting.
Controls to mark
Mark the points where someone checks the data, such as matching bills to payments. Verifiers test these.
Keep it current
Update it when a person, system or supplier changes.
What Senseible does here
Senseible keeps each figure tied to its invoice, factor and method version, so a verifier can trace any number back to the document it came from.
Sources: ISO 14064-3, verification of greenhouse gas statements, GHG Protocol Corporate Standard
Last reviewed 2026-10-22.