A Transurban project team sends through a sustainability requirement: they need the emissions behind your work, or the materials you supply, to feed their construction emissions target. Two questions follow: what counts, and how do you give them something that holds up?
About this guide
CO2 Lab is not affiliated with, endorsed by, or partnered with Transurban. This guide explains their publicly stated emissions targets and supplier engagement, 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 Transurban is asking
Transurban has a science-based target to cut emissions intensity across its major construction and development projects by 55% by 2030. Capital goods, the fuel, materials and plant used to build and widen toll roads, are a major part of its Scope 3, and that is where the target bites. It cannot be met from Transurban's own operations, so the contractors and materials suppliers on those projects are asked for the emissions of their work and products.
What Transurban asks, by supplier type
| If you are | What they'll want from you |
|---|---|
| A materials supplier (concrete, steel, asphalt) | Emissions per unit of product, with the method behind the figure |
| A civil contractor on a project | The emissions of the work you perform, fuel and plant first |
| An operations or maintenance supplier | Your Scope 1 and 2, and the emissions of goods you supply |
Embodied carbon is the number they want
In civil construction the biggest lever is embodied carbon, the emissions locked into materials when they are made, and concrete, steel and asphalt dominate it. So a materials supplier faces the most specific ask: the emissions per unit of product. A civil contractor is asked for the emissions of the work performed, which is fuel and plant first. Either way it is the same discipline as any customer's data request: a number with the method behind it.
“A 55% intensity target on construction is met one project at a time. A figure you can trace to its method is the one that survives into Transurban's account.”
Why your number matters to TransurbanHow to respond
A first response to a Transurban request
- Build Scope 1 and 2 from your fuel, plant and energy 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 Transurban request into a traceable number. What our AI Sustainability Analyst gives a contractor or supplier:
Answer the Scope 3 request with something traceable
Our AI Sustainability Analyst builds your footprint from your own fuel, plant and energy records, with the method and evidence behind every figure, ready to share.
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