My buyer wants only the emissions for the goods I supplied them. How do I work that out?

Share your plant's emissions for the period by a physical measure, such as tonnes or pieces, in proportion to that buyer's orders. If products differ a lot, allocate by line or by machine hours first. State the method so the buyer can compare suppliers.

Steps

1. Plant Scope 1 and 2 for the period.
2. Output in the chosen unit for all customers.
3. Buyer's output ÷ total × plant emissions.

When to refine

If the buyer's products use a different process or much more energy, split emissions by line first, then share within the line.

Example: one buyer

• Plant emissions 1,200 t CO2 a year
• Buyer's share of output: 250 of 2,000 t = 12.5%
• 1,200 × 12.5% = 150 t CO2

What Senseible does here

Senseible reads fuel, electricity and production documents into dated, fingerprinted plant records, so the monthly intensity behind a compliance figure can be traced to its source.

• Allocating footwear emissions per pair
• What primary data share means
• Benchmarking plant energy

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

Last reviewed 2026-10-22.