climate action
Climate action at Diploma is about taking steps that matter today and set us up for tomorrow. We use more renewable energy, improve energy efficiency and work hard to strengthen the quality of our data so we can track our progress with clarity and confidence.
We are taking decisive action to improve our impact on the climate, underpinned by a transparent and scientific approach.
Our net zero roadmap
Our journey to net zero is guided by science and built on steady, continuous improvement. We are:
Expanding our use of renewable electricity
Reducing the amount of energy we use per unit of output
Improving supplier data so we can take targeted action on Scope 3 emissions
Each of these steps helps us reduce our impact today and build resilience for the future emissions.
Our commitments
By 2030
50%
reduction in Scope 1 and 2 emissions
By 2030
30%
reduction in Scope 3 emissions
Net zero by
2045
Climate action in practice
Improved access to Scope 3 data
Our partnership with Ecovadis is accelerating our ability to better engage with suppliers and enabling improved access to Scope 3 data across our value chain. This will enable us to focus better on identifying and embedding decarbonisation initiatives across our businesses and driving supplier engagement at scale.
Momentum towards net zero
In FY25, we completed third-party verification of our FY23 and FY24 greenhouse gas inventories – with FY25 verification in progress – across both market-based and location-based reporting. This progress is reflected in our CDP rating of B in FY25, marking a step-change improvement from D in prior years and demonstrating our momentum towards net zero.
waste reduction
Reducing our waste intensity and, specifically, the proportion of waste that we send to landfill is one of our sustainability priorities.
A growing internal network helps teams learn from each other and share solutions that work. By making small, thoughtful changes at the source, our businesses are reducing waste and embedding more circular ways of working.
Our commitments
By 2030
<15%
waste to landfill
FY25 waste to landfill
18%
FY25 recycling rate
74%
Waste reduction in practice
Recycling through community partnership in Australia
In Australia, we work with a local charity to find practical ways to recycle materials that would otherwise go to landfill.
Some medical shipments use special insulated packaging that cannot be recycled as-is. Through this partnership, the charity’s team works with our life sciences business one day each month to separate the packaging layers by hand, allowing most of the materials to be recycled.
The programme improves our recycling outcomes while creating meaningful jobs and skills-building opportunities for people with disabilities.
Improving waste management across our US sites
In the US, many of our businesses generate relatively small amounts of waste. To manage this more effectively, we work with waste consolidators who help us reduce landfill disposal and improve recycling outcomes.
These partners support our sites in managing all types of materials, making it easier to increase diversion rates while keeping costs and operations under control.
Better access to waste data helps ensure materials are properly sorted, tracked, and sent to recycling or recovery facilities instead of landfill.