Streamline Your Disclosure Requests: Letter to the Customer

Consolidate your disclosure requests to reduce your reporting burden as a supplier. Sign the Letter to the Customer and encourage your buyers to request environmental data through CDP.

Sign the Letter now

Received the Letter? Read our FAQs for buyers to learn more, below

Momentum around environmental disclosure continues to build with more buyers and investors seeking this data. New regulations, standards and frameworks now require more rigorous environmental data.

We believe organizations should only need to disclose data once, in a standardized and comparable way – freeing up suppliers and buyers to spend more time integrating environmental action into their operations while capitalizing on new financial opportunities.

Based on 2024–2025 data from CDP, every US$1 spent on addressing climate risks and reporting can deliver a return of up to US$21.

We know we are not alone in this thinking.

If you agree, sign the Letter to the Customer and encourage your buyers to request disclosure through CDP as a Supply Chain member, and help consolidate the number of requests you receive in the process.

Sign the Letter now Read our FAQs below to learn more

cdp-letter-to-the-customer-why-sign-letter

Why should suppliers sign the Letter?

Suppliers that are requested to disclose environmental data through CDP can respond to multiple requests from their buyers (customers) through one platform, reducing the administrative burden of disclosing through multiple platforms.

Over 270 major purchasing organizations use CDP to request environmental data from their suppliers, to manage risk, meet stakeholder expectations and capture the associated economic advantages. This supplier-disclosed data is often used for multiple requests – CDP’s most-requested supplier receives nearly 150 requests.

This allows suppliers to disclose regulatory and investor-aligned data that can inform decision-making, quickly and easily.

As the world’s largest environmental disclosure platform, requesting and reporting through CDP allows more businesses to contribute to a shared foundation of credible, interoperable and decision-useful data that drives actionable change.

Sign the Letter now

Please complete the form below to sign the Letter to the Customer and encourage your buyers to request disclosure as a CDP Supply Chain member, or if you're interested in finding out more.

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FAQs

For suppliers signing the Letter

The Letter to the Customer is designed to act as a catalyst to encourage more companies to make disclosure requests through CDP. This will help further cement CDP as the leading disclosure standard, reducing the number of requests your organization receives through other platforms, and helping to ensure environmental reporting is accurate and consistent.

We believe organizations should only need to disclose accurate, standardized environment data once. By signing the Letter above, you lend your voice to our campaign to encourage your key customers to request through CDP as a Supply Chain Member.

As a supplier that already discloses through CDP, we're asking you to consider supporting our efforts, to reduce the time and effort it takes businesses to respond to data requests while also improving environmental transparency.

Sign the Letter now

Signing the Letter to the Customer can encourage your key industry customers to request disclosure through CDP – directly reducing the time and effort you need to spend reporting via different platforms.

It also positions you as a proactive, transparent organization prepared for emerging global environmental standards and regulations.

We are writing to suppliers that disclose through CDP who have customers in the same industry, having identified steel as a key sector for driving new disclosures and environmental transparency.

We plan to expand this request to suppliers across other sectors in the future.

The signed letter will be shared via steel industry groups and trade association groups within the sector. It will include signatures from all suppliers that are participating in the campaign.

For buyers who’ve received the Letter

You are receiving the signed Letter to the Customer to ask you to consider making disclosure requests through CDP – the world’s only independent environmental disclosure system – as a CDP Supply Chain Member.

CDP has over 18 years of experience connecting businesses with suppliers, to help them minimize risk and drive action at scale. Over 270 major purchasing organizations use CDP to request environmental data from their suppliers and gain visibility to manage risk, meet stakeholder expectations and capitalize on new opportunities.

As a Supply Chain Member, you can gain immediate access to standardized, regulatory-compliant data from suppliers in your value chain who are already reporting through CDP.

When suppliers disclose through CDP means, their data can be used many times by multiple stakeholders – these include companies from 130 countries representing two-thirds of global market capitalization and financial institutions that account for a quarter of all global institutional financial assets.

Requesting data through CDP reduces your suppliers’ administrative burden. This also ensures a consistent, best practice approach to environmental disclosure that is aligned with the most important global environmental frameworks and standards.

Become a Supply Chain Member

CDP’s Supply Chain Membership connects you to the world’s largest supplier network and environmental disclosure platform, giving your company unparalleled access to supplier-level data. With insights across climate, forests, water, biodiversity, and plastics, members gain the visibility needed to make smarter procurement decisions and unlock measurable sustainability impact.

Membership includes access to a range of data products and tools to help you track performance, meet disclosure requirements, and manage Scope 3 emissions with confidence.

Become a Supply Chain Member Download brochure

We know we are not alone in this thinking.

Why should suppliers sign the Letter?

Sign the Letter now

FAQs

For suppliers signing the Letter

Why should I sign the Letter to the Customer?

How does signing this letter benefit me?

Who else are you asking to sign this letter?

How will this letter be shared with my requesters?

For buyers who’ve received the Letter

Why am I receiving this letter?

What is CDP’s Supply Chain Membership?