A buyer at Bunnings sends through a sustainability requirement, or an invitation to supplier Scope 3 training: they want the emissions behind the products you supply. Two questions follow: what is Bunnings actually asking, and how do you give them something that holds up?
About this guide
CO2 Lab is not affiliated with, endorsed by, or partnered with Bunnings or Wesfarmers. This guide explains their publicly stated supplier engagement and targets, as at October 2026, to help suppliers respond, and is based on the sources linked below. All trademarks are the property of their respective owners.
Why Bunnings is asking
Purchased goods and services are the largest source of Scope 3 across the Wesfarmers group, and parent Wesfarmers targets a 50% reduction in Scope 3 intensity across purchased goods and logistics by 2040. That target cannot be met from Bunnings' own operations, so Bunnings invited its top 100 suppliers, by expenditure and emissions, into Scope 3 training to lift supplier engagement and data quality. The request for your numbers follows from there.
What Bunnings asks, by supplier type
| If you are | What they'll want from you |
|---|---|
| A materials supplier (steel, aluminium, plastic, textiles) | Emissions per unit of product, with the method behind the figure |
| A manufacturer or finished-goods supplier | Your Scope 1 and 2, and increasingly a reduction target over time |
| A logistics or transport supplier | The emissions of the freight you move, fuel first |
The footprint comes before the target
Most of the Group's purchased-goods footprint concentrates in a few emissions-intensive inputs, so a materials or manufacturing supplier faces the most specific ask: the emissions per unit of product. A wholesale or finished-goods supplier is asked for its own Scope 1 and 2 first. Either way it is the same discipline as any customer's data request: a number with the method behind it, not a one-line total.
“Bunnings is lifting supplier data quality, not collecting round numbers. A figure you can trace to its method is the one that survives into their Scope 3 account.”
What the training programme is really afterHow to respond
A first response to a Bunnings request
- Build Scope 1 and 2 from your energy, fuel and production records
- For materials, work out emissions per unit of product supplied
- Apply the current NGA Factors and recognised materials data, method shown
- Flag what is measured and what is estimated
- Keep the evidence together, so a product-level figure is defensible
Turn the Bunnings request into a traceable number. What our AI Sustainability Analyst gives a supplier:
Answer the Bunnings request with something traceable
Our AI Sustainability Analyst builds your footprint from your own energy, fuel and production records, with the method and evidence behind every figure, ready to share.
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