A buyer's RFQ asks for a carbon figure per unit. What do we put?

Give a cradle-to-gate figure per unit from your last 12 months of bills and production, with the boundary stated. If you have not measured it, give a clearly labelled estimate and the date you will have a measured figure. A number you cannot back up can cost you the contract later.

What to include

• Figure per unit and the unit used.
• Boundary: own operations only, or including materials.
• Period and data source.
• Whether it is measured or estimated.

If time is short

Use your energy bills for Scope 1 and 2 per unit now, and add materials later. Say which parts are in.

What Senseible does here

Senseible reads bills, fuel invoices and production records into dated, fingerprinted records, so the figure you send a buyer can be traced to its documents.

• Footprint of a new product
• Contractor carbon data for tenders

Sources: ISO 14067:2018, Carbon footprint of products (iso.org), GHG Protocol Product Standard

Last reviewed 2026-10-22.