When a customer asks you to disclose through CDP, start by clarifying what they expect: a completed response, specific environmental data, or progress toward a target. That conversation gives your sustainability lead a practical scope and helps procurement understand what your business can deliver.
CDP Supply Chain connects corporate buyers with supplier environmental disclosure. For suppliers, preparing a credible response means bringing together emissions calculations, governance, risks, and evidence of environmental action. For buyers, the work continues after disclosure: using supplier information to guide purchasing and collaboration.
What is CDP Supply Chain?
CDP, formerly the Carbon Disclosure Project, operates an environmental disclosure system. Through CDP supply chain membership, buyers request information from chosen suppliers and receive tools and support for supplier engagement. Suppliers answer the main questionnaire alongside supply chain questions relevant to requesting customers. Members use the resulting primary data for reporting, Scope 3 accounting, and collaborative initiatives.
Membership options differ in supplier request capacity, data products, and support. A dedicated account manager is included in some tiers; buyers should confirm which services their agreement covers.
Why buyers request supplier environmental data
A company’s carbon footprint extends beyond its operational emissions. Under the GHG Protocol, Scope 3 emissions cover upstream and downstream value chain activities, including purchased goods and services, transport, and the use of sold products. Supplier information can help buyers understand the emissions associated with what they purchase.
Managing risk also requires attention beyond carbon. CDP’s supplier selection guidance addresses climate change, deforestation through forest-related exposure, and water security. These issues can affect which suppliers a buyer prioritizes for disclosure.
For your team, a useful starting question is: which customer decision will this information support? Ask whether the buyer needs emissions allocations, target progress, or information about specific environmental risks. Record that answer alongside the request, rather than assuming every customer uses CDP data in the same way.
How suppliers should prepare a response
Confirm the request and assign ownership
Check the requesting customers, applicable questionnaire, and current cycle guidance in the CDP Portal. CDP provides integrated corporate and SME questionnaires; the questions presented depend on the applicable route and environmental issues.
Name one submission owner, then assign contributors for facilities data, finance records, procurement, and leadership approvals. Give each contributor a specific deliverable and internal due date. Ask your customer to clarify any expectations beyond CDP’s submission requirements.
Build a traceable emissions inventory
Organize the reporting period, organizational boundary, activity data, emission factors, and calculation methods. Keep evidence beside the figures so reviewers can understand how totals were produced.
Supply chain emissions require particular care. A supplier’s total corporate emissions are not automatically the emissions attributable to one customer. GHG Protocol guidance distinguishes supplier-specific, hybrid, average-data, and spend-based calculation methods for purchased goods and services. Select an appropriate method and document allocation where needed.
Explain practices with supporting evidence
Gather approved policies, risk assessments, oversight responsibilities, reduction initiatives, and target documentation. If your organization has science-based targets, describe their status accurately and retain the supporting records. Separate approved commitments from proposals awaiting approval.
Explain how you assessed environmental impacts and climate-related opportunities in your own business. Avoid generic answers that describe what companies could do. Show what your organization has evaluated, implemented, or measured.
Review before submission
Reconcile figures across answers, check units and reporting periods, and confirm that narrative claims match the evidence. Use the current scoring guidance when reviewing your CDP score priorities. CDP evaluates responses across Disclosure, Awareness, Management, and Leadership levels; completing fields alone does not demonstrate leadership.
How buyers can turn disclosure into action
Treat disclosure as a starting point for supply chain strategies. Prioritize follow-up by emissions relevance, environmental exposure, and the importance of the supplier relationship. Ask suppliers with incomplete data for a defined improvement plan, and discuss joint projects with suppliers ready to pursue emissions reductions.
For sustainable supply chains, track participation separately from performance. A response rate tells you who disclosed. Progress on data quality, targets, and reduction projects tells you what changed. Bring those findings into procurement reviews so environmental transparency informs recurring decisions.
Make your customer request manageable
Greenplaces supports CDP reporting across climate, water, and forests, including questionnaire preparation, evidence development, response structuring, and submission. If your team needs help responding to a customer request, book a strategy call to discuss the scope, available data, and support required.