Our Saltillo foundry casts engine and chassis parts. How do we give the carmaker a carbon figure?

Add melting energy, whether electricity for induction furnaces or gas, plus coke if you run a cupola, then add metal bought in: scrap at near zero, pig iron and alloys at supplier figures. Divide by good castings, not metal melted.

Melting

• Induction furnace electricity, at the Mexican grid factor.
• Gas for aluminium melting and holding.
• Coke for cupolas.

Metal inputs

• Purchased scrap, returns and pig iron.
• Alloys and inoculants.
• Sand binders, if the buyer asks for a full footprint.

Yield

Runners, risers and rejects are remelted, so divide by good castings shipped and state the yield.

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.

• Mexico grid factor
• Bajio parts shipments and CBAM
• Aluminium die casting footprint

Sources: GHG Protocol Corporate Standard, GHG Protocol Corporate Value Chain (Scope 3) Standard, GHG Protocol Scope 2 Guidance

Last reviewed 2026-10-22.