CORPORATE ACTION → SUPPLY CHAIN & SCOPE 3
Supply Chain & Scope 3
For most small teams, supply chain sustainability arrives as a question from a bigger customer. Here is what they are asking, why, and how to turn a good answer into an advantage.
In 30 Seconds
You did not set out to run a Scope 3 programme. A larger customer sent a questionnaire, a contract clause, or a request for your emissions and targets, and now it is your problem to answer. That is how supply chain sustainability reaches most small teams and SMEs: not as a strategy you chose, but as a request you have to respond to.
Why it landed on you: for the company asking, the bulk of their footprint sits in their supply chain, and that supply chain is you. Their own regulators and reporting rules push the request down to their suppliers. You are the receiving end of a cascade that starts several tiers up.
The good news: a clear, credible answer is not a cost you swallow. It keeps you in the running for the contract, it is cheaper to gather once than to reconstruct under pressure, and the same evidence opens finance and new revenue later.
What you are actually being asked for
The requests look varied, but they cluster into a few types. Knowing which one you have received tells you how much work it really involves, and stops you buying a heavyweight tool for a lightweight ask.
A carbon footprint
Your Scope 1 and 2 emissions, sometimes a slice of Scope 3. Usually the first and most common ask. A basic footprint from activity data (your actual energy use) is what a buyer audit increasingly expects, over figures built from spend averages.
A questionnaire or scorecard
A supplier survey, a CDP Supply Chain request, or an EcoVadis or Sedex assessment. These bundle carbon with wider environmental, labour and ethics questions. The buyer wants comparable answers across all their suppliers, not a bespoke report.
A target or commitment
A request to set a reduction target, or to sign up to a scheme such as the SME Climate Commitment. This is the buyer working towards their own supplier engagement target: a share of their suppliers, by emissions, committing to reduce.
Traceability or due diligence
For physical goods, evidence of where a product or commodity came from: origin, chain of custody, deforestation status. Driven by rules such as the EU Deforestation Regulation. This is documentary evidence, not a carbon number.
Before you buy anything: find out exactly what is being asked and for what deadline. Many requests are satisfied by a free calculator and a short statement. For a full map of the tools, which job each one does, and where to start, see the SME tools guide.
Why the request looks the way it does
The questionnaire feels arbitrary until you see the machine behind it. For the company asking, Scope 1 (their direct emissions) and Scope 2 (their purchased energy) are within their control. Scope 3, everything in their value chain, is usually the majority, and most of it lives in their suppliers. So they run a programme to reach it, and the shape of that programme is why your request looks the way it does.
Engagement beats exclusion
A buyer cannot cut its footprint by dropping suppliers; the emissions just move elsewhere. It reduces Scope 3 by helping suppliers measure and improve. That is why you get a request to engage, not a notice to leave.
The data cascade
The buyer needs figures it can add up across every supplier, so it pushes a standard questionnaire down the chain. You are asked for comparable data because that is the only kind that rolls up into their total.
Tiering
Roughly 20% of suppliers carry 80% of a buyer's Scope 3, so the heaviest requests go to the highest-impact suppliers first. How demanding your ask is often reflects how material you are to them, which is useful leverage to understand.
The underlying rules: the buyer is not asking to be difficult. Standards such as the SBTi require companies to set Scope 3 targets once their value chain exceeds 40% of total emissions, and disclosure regimes such as CSRD require them to report on it. Their obligation becomes your questionnaire.
What is reasonable, and what to push back on
Being asked does not mean you owe a full corporate disclosure. A small supplier and a multinational face very different expectations, and it is fair to right-size your response.
Reasonable: a proportionate footprint
Scope 1 and 2 from your actual activity data, with clear methodology. A reasonable estimate you can explain beats a precise-looking number you cannot defend.
Reasonable: a direction of travel
A commitment to measure and improve, even if the first numbers are rough. Frameworks expect year-on-year improvement in data quality, not perfection on day one.
Push back: deep Scope 3 you cannot see
You are one supplier; you cannot be expected to map your buyer’s whole chain. Report what is in your control and be honest about what is estimated or out of scope.
Push back: duplicate and bespoke formats
If several customers ask for the same data in different formats, it is fair to answer once well and share it. The direction of travel is a common standard, so one dataset should serve many.
The data quality reality
Buyers grade the data behind an answer. Primary data from your own meters and records is the strongest; spend-based estimates are quick but can be rejected in an audit; sector averages are a starting point only. You do not need the best data everywhere, but you should know which kind you are giving and be ready to improve it where it matters.
A good answer is an asset, not just a cost
The request is the stick. There is a carrot too. Gathered properly, the evidence you produce to answer one customer becomes something you own and reuse, and for some businesses it unlocks money.
You keep the contract
Sustainability credentials are increasingly part of purchasing decisions. Answering well keeps you in the running for work you might otherwise quietly lose, and answering faster than your competitors is itself a differentiator.
A baseline you own
Data captured properly, credible and verifiable, is cheap to gather as you go and expensive to reconstruct later. The next request costs you far less because you already hold the answer.
It opens capital and revenue
The same evidence improves your access to finance and, for a land-based business, unlocks ecosystem-service payments: carbon and biodiversity credits, Biodiversity Net Gain, and schemes that reward protecting water and soil. The market pays for evidence.
Claims you can stand behind
Evidenced well, the data lets you make claims you can defend, the difference between a credible story and greenwashing, and turns a compliance file into a brand asset.
The thread: the evidence you gather to answer a buyer is the same evidence that, stored well and made verifiable, attracts investment and unlocks payment. Start it early and it compounds. See traceability for how that evidence chain is built, and the carbon accounting gap for why small teams often already hold most of what they need.
When the ask is about goods, not carbon
If you make, grow or move physical products, some requests are about traceability and due diligence rather than emissions. These are driven by EU rules that reach any supplier selling into an EU value chain, whatever your size.
EUDR
EU Deforestation Regulation
- • Covers cattle, cocoa, coffee, palm oil, rubber, soy and wood, and products made from them
- • Requires traceability to the plot of land
- • Must prove deforestation-free since 31 December 2020
- • Due diligence statements required
- • Applies from 30 December 2026 for large and medium operators, and 30 June 2027 for micro and small operators
CSDDD
Corporate Sustainability Due Diligence Directive
- • Human rights and environmental due diligence across the value chain
- • After the 2025 Omnibus changes, applies to companies with 5,000+ employees and EUR 1.5bn+ turnover
- • Phased application from 26 July 2029
- • Requires risk identification and mitigation
- • It binds large buyers, but they will ask smaller suppliers for the evidence underneath
The convergence
Carbon accounting, deforestation due diligence and human rights due diligence all rest on the same foundation: knowing where your product comes from. A supplier that can trace its goods answers all three kinds of request from one body of evidence.
Supply Chains Meet Landscapes
This is where corporate action connects to the real world. A supply chain does not exist in spreadsheets. It exists in specific places, with specific ecosystems, communities and environmental conditions, and that is where the data ultimately comes from.
Why landscape context matters
Water risk
Suppliers in water-stressed regions face different risks
Deforestation exposure
Commodity sourcing from high-risk jurisdictions
Climate vulnerability
Physical climate risks to supplier operations
Community relations
Social licence in sourcing landscapes
This is why we think about sustainability in layers. A buyer's corporate targets (L5) flow through the supply chain to specific landscapes (L2) and the ecosystem services they depend on (L3). Understanding those connections is what makes a supplier's answer credible, and a buyer's target achievable.
The Pandion View
Most of the writing on Scope 3 is addressed to the corporate buyer running the programme. We spend most of our time at the other end of it, with the small teams and SMEs who receive the request and have to answer without a sustainability department.
A questionnaire from a big customer is not a threat to survive, it is a prompt to build something you own. The goal is not perfect carbon accounting. It is a proportionate, credible answer, given once and reused, that keeps the contract and compounds into finance and new revenue.
We help clients read what is actually being asked, gather the evidence with the least effort, and connect it to the landscapes it comes from. We speak the language of procurement, of sustainability, and of the places where commodities are grown and products are made.