Beyond Surveys: Supplier Buy-In for Climate Action

Howden manages Scope 3 PG&S emissions across 55 countries with DitchCarbon.
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You send the annual supplier survey, hoping for the clear, actionable data you need to hit your climate targets. Instead, you get a trickle of incomplete responses, a few out-of-date PDFs, and silence from the vast majority of your supply chain. The entire exercise feels more like chasing paperwork than driving decarbonisation. Your suppliers see it as another compliance burden, and frankly, you’re starting to agree.
This is a common story. The goal is to reduce emissions, but the process gets stuck on collecting data. If you want to make real progress, the approach needs to change fundamentally.
Why most supplier engagement stalls
Teams often get bogged down for three reasons. First, the entire process is framed as a one-way, extractive request. We ask suppliers for their data to help us with our reporting and our targets. There is rarely a compelling reason for them to prioritise it. It’s a tax on their time with no clear return.
Second, we tend to treat all suppliers the same. The questionnaire sent to a global strategic partner is often the same one sent to a small, family-run business that provides a single component. This one-size-fits-all approach simultaneously underwhelms your most important partners and overwhelms the long tail, guaranteeing low-quality engagement across the board.
Finally, the request is often disconnected from commercial reality. It comes from a sustainability team, not a procurement manager. It isn't linked to sourcing decisions, contract renewals, or supplier performance reviews. Without that commercial grounding, it’s just another nice-to-have request that will always be trumped by delivery deadlines and cost pressures.
What a better approach looks like
Imagine a different scenario. Instead of a mass survey, you run a segmented, strategic engagement programme. Your most critical suppliers-the 20% who often account for 80% of your emissions-are treated like genuine partners in decarbonisation. The conversation is not about filling in a form; it’s a collaborative discussion about joint business planning, innovation, and shared goals.
For example, a large industrial manufacturer we know identified that just 50 of its 6,000+ suppliers were responsible for the vast majority of its Scope 3 footprint. Instead of another survey blast, their procurement and sustainability teams ran joint workshops with those 50 partners. They focused on specific, tangible levers like material substitution, logistics optimisation, and renewable energy adoption. The result was a pipeline of real reduction projects, not just a more complete spreadsheet.
Supplier engagement isn't about perfecting the survey. It’s about embedding decarbonisation into the commercial core of your business and treating suppliers as partners in your climate mission.
In this model, emissions performance becomes a standard part of the conversation, sitting alongside cost, quality, and reliability. It’s a data point that informs sourcing decisions, not an afterthought for an annual report. For the rest of the supply chain, the process is lighter, using existing public data where possible and simple tools to make responding easy.
A practical playbook for driving action
Getting this right doesn't require a complete overhaul of your operations. It requires a smarter, more focused approach.
First, segment your suppliers. Stop treating everyone the same. Use your spend data and emissions hotspots to identify the critical few whose engagement will make a material difference. A good platform can help you cut through the noise, interpreting messy data to show you precisely where to focus your energy for the biggest climate return.
Second, change the conversation. For your strategic suppliers, move beyond data collection. Frame the discussion around partnership and mutual value. Share scorecards that show them how they benchmark against their peers and work with them to build a credible reduction plan. The question should be, "How can we work together to decarbonise?" not "Can you please complete this questionnaire?"
Third, integrate with procurement. This is the most powerful lever you have. Work with your buying teams to make emissions a key performance indicator in supplier selection and management. When suppliers see that lower emissions can lead to more business, their motivation changes instantly. This is about making better decisions before the purchase order is raised.
Finally, make it easy for everyone else. For the thousands of suppliers in your long tail, reduce the burden. Use technology to pull in existing disclosures and public data automatically. Where you do need to ask for information, use a simple, streamlined portal that remembers their previous answers and helps them through the process.
Your best first step this quarter
Trying to do all of this at once can be daunting. So, don’t.
This quarter, pick just one strategic supplier. Forget the survey. Arrange a meeting with your procurement lead and their commercial and operational counterparts. Put the data to one side and have a simple conversation about building a joint plan to reduce the carbon footprint of one specific product or service you buy from them.
Your goal is to prove the model-that a collaborative, commercially-focused approach yields far better results than a compliance-led one. That single success story will give you the internal momentum and the practical blueprint you need to scale real climate action across your supply chain. The data is a starting point, not the destination.
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