How does a buyer count Kuwaiti polyethylene in Scope 3?
Multiply tonnes bought by a per tonne footprint for that grade, ideally from the producer, cradle to gate. Polyethylene is not a CBAM good, so this is a Scope 3 figure, not a border charge. Without producer data, use a database value for gas based ethylene and say so.
What to ask
- Cradle to gate CO2 per tonne for the grade.
- Whether it includes feedstock extraction.
- Method and year.
Records
Purchase invoices with tonnes per grade, and the producer named on the delivery note.
Your own share
Add the power for extrusion or moulding to get a footprint per tonne of finished product.
What Senseible does here
Senseible turns supplier invoices into a Scope 3 record with the supplier, quantity and factor behind every figure, so you can see which supplier data is still missing.
Sources: GHG Protocol Corporate Value Chain (Scope 3) Standard, GHG Protocol Corporate Standard
Last reviewed 2026-10-21.