CDP Reporting: Why It Matters for Irish Companies

CDP is the global standard for corporate environmental disclosure. More than 23,000 companies worldwide report through CDP each year, driven by investor demand, supply chain requirements, and the growing overlap between voluntary disclosure and mandatory EU reporting. For Irish companies already preparing for CSRD, CDP is both a complement and a proving ground — a way to benchmark your environmental data against global peers before regulatory deadlines arrive.

What CDP Is

CDP is a not-for-profit organisation that runs the global disclosure system for companies, cities, states, and regions to report their environmental impact. Founded in 2000 as the Carbon Disclosure Project, it started with a single question: what are your carbon emissions? It has since expanded into a comprehensive environmental reporting platform covering climate change, deforestation, and water security.

The system works through a request mechanism. Investors sign up to CDP and request that companies in their portfolios disclose environmental data. Customers do the same through CDP Supply Chain — requesting that their suppliers complete CDP questionnaires. When you receive a CDP request, it means a specific investor or customer wants to see your environmental data — and how you respond (or whether you respond at all) sends a signal about how seriously you manage environmental risk.

More than 23,000 companies disclosed through CDP in 2025, including a significant and growing number of Irish businesses. CDP holds the largest global database of corporate environmental information, and its data is used by credit rating agencies, ESG research firms, and sustainability indices worldwide.

The distinction matters: CDP is not a regulation. It is a voluntary disclosure system. But the line between voluntary and mandatory is narrowing. CDP data feeds into indices, ratings, and procurement decisions that have direct commercial consequences. And for companies entering CSRD scope, a strong CDP disclosure builds the internal data infrastructure you will need for mandatory reporting.

The Three CDP Questionnaires

CDP operates three questionnaires, each targeting a different environmental domain:

Climate Change — The most widely completed questionnaire. It covers greenhouse gas emissions (Scope 1, 2, and 3), emissions reduction targets, climate risks and opportunities, governance, strategy, and transition planning. This is the questionnaire most relevant to Irish companies.

Forests — Covers commodities linked to deforestation: timber, palm oil, soy, cattle, rubber, cocoa, and coffee. Relevant if your supply chain includes these commodities.

Water Security — Covers water withdrawals, consumption, discharge, water-related risks, and governance. Relevant for water-intensive industries such as food and beverage, pharmaceuticals, and semiconductor manufacturing.

Most Irish companies completing CDP for the first time will focus solely on the Climate Change questionnaire. The questionnaire is detailed — typically 80+ questions across governance, risks and opportunities, business strategy, targets and performance, emissions methodology, emissions data, energy, and value chain engagement.

How CDP Scoring Works

CDP scores companies on a scale from D- to A, structured across four progressive levels:

D / D- (Disclosure) — You submitted a response, but the data lacks the depth and completeness needed to progress.

C / C- (Awareness) — You have identified impacts and risks, but need to demonstrate comprehensive management processes to move higher.

B / B- (Management) — You have implemented policies and targets and can evidence actions taken — reaching this level on a first submission requires careful preparation.

A / A- (Leadership) — Best practice across governance, science-aligned targets, verified data, and value chain engagement — a level that typically takes multiple disclosure cycles and specialist guidance to achieve.

Scores are calculated through a points-based system that rewards completeness, specificity, and evidence of action. Verified data, third-party certifications (such as ISO 14001), and science-based targets all contribute to higher scores.

The scoring methodology is significantly more nuanced than many companies expect. CDP penalises unanswered questions more heavily than honest answers that reveal challenges — but knowing how to frame responses to capture maximum credit at each scoring level requires specialist understanding of CDP’s expectations. The difference between a B and a C often comes down to how information is presented, not just what information you have. If you want to make sure your first submission lands where it should, talk to our team before the April window opens.

Why Irish Companies Disclose Through CDP

Investor Requests

The most common trigger is a direct request from an investor. CDP’s investor signatories collectively manage over USD 127 trillion in assets. If your company has institutional investors — particularly international fund managers or pension funds — there is a reasonable probability you have already received a CDP request or will receive one. Ignoring an investor CDP request sends a clear signal: we are not managing our environmental risks.

Customer Supply Chain Programmes

CDP Supply Chain allows large companies to request environmental data from their suppliers. If you supply goods or services to multinationals with net-zero commitments, they may require you to disclose through CDP as a condition of continued business. This is increasingly common in manufacturing, food and beverage, and professional services. If you have received a supply chain disclosure request and are not sure where to start, talk to us — we help companies respond efficiently to their first CDP request.

CSRD Alignment

For Irish companies entering CSRD scope, CDP disclosure provides a structured trial run. The Climate Change questionnaire covers many of the same data points required by ESRS E1 (Climate Change) — greenhouse gas emissions, climate governance, transition planning, and risk assessment. Completing CDP first gives you a dataset, identifies gaps, and builds internal capacity before CSRD deadlines.

Benchmarking

CDP scores are published and comparable. Your score places your company against sector peers globally and within Ireland. For companies that take sustainability seriously, a strong CDP score is a credible, third-party-validated signal — more meaningful than self-published sustainability reports.

Competitive Advantage in Procurement

Green public procurement in Ireland and across the EU increasingly references environmental disclosure. A CDP score provides verifiable evidence of environmental management that procurement teams can assess objectively.

CDP and CSRD — How They Connect

CDP and CSRD are different instruments, but they are converging. CDP has deliberately aligned its questionnaire with EU reporting standards, creating significant overlap:

Data overlap — Both require Scope 1, 2, and 3 emissions data, climate governance disclosures, transition plans, and risk assessments. If you collect data for one, you have a substantial head start on the other.

TCFD and ESRS alignment — CDP’s Climate Change questionnaire is structured around the TCFD (Task Force on Climate-related Financial Disclosures) framework, which is also the foundation for ESRS E1. The categories — governance, strategy, risk management, metrics and targets — map directly.

Using CDP data for CSRD — Companies that have been disclosing through CDP can repurpose their responses as the basis for ESRS E1 disclosures. The data collection processes, governance structures, and verification procedures you build for CDP are directly transferable.

CDP as a practice round — CSRD reports are legally mandated, publicly available, and subject to assurance. CDP disclosure, while public, carries lower stakes. It is a practical way to test your data systems, identify weaknesses, and refine your reporting before the regulatory version is due.

The practical implication: if you are preparing for CSRD, disclosing through CDP in the same year or the year before compounds the value of your effort rather than duplicating it. But maximising that synergy requires deliberate planning — aligning your data collection, methodology, and governance structures so they serve both purposes from the outset. We help Irish companies design this integrated approach so that one investment in data serves both CDP and CSRD.

Why CDP Disclosure Is Harder Than It Looks

Companies approaching CDP for the first time frequently underestimate the effort involved. The Climate Change questionnaire is not a survey — it is a comprehensive interrogation of your environmental management maturity across 80+ questions that demand specific, verifiable data. This is where most internal teams hit the limits of what they can handle without specialist support.

The Data Challenge

The questionnaire requires, at minimum, Scope 1 and 2 GHG emissions (both location-based and market-based), Scope 3 emissions for material categories, energy consumption broken down by fuel type, and additional governance, strategy, target-setting, and verification requirements that span the full range of your environmental management maturity. Most companies do not have this data readily available in the format and granularity CDP requires — and assembling it for the first time is a project in itself.

The Scoring Nuances

The difference between a B score and a C score — or between a B and an A — often comes down to how responses are framed, not just what data is provided. CDP’s scoring methodology rewards specific patterns of disclosure at each level, and the gap between what a company knows and what it communicates effectively in the questionnaire format can be significant.

The Consistency Requirement

CDP responses are public. Investors, customers, and rating agencies compare your CDP data against your annual report, your CSRD disclosures, and your website claims. Inconsistencies erode credibility. Ensuring your CDP responses are consistent with your other disclosures — and with your carbon accounting methodology — requires careful coordination across teams.

Common Pitfalls

We regularly see companies lose an entire scoring tier — or worse — through avoidable mistakes: blank questions that trigger heavy penalties, vague responses that score zero points, missing Scope 3 emissions that signal immaturity to investors, and unverified data that caps your score below Management level regardless of how strong the rest of your submission is. Each of these errors has a specific, compounding impact on your final score, and most companies only discover them when the results arrive in December — too late to fix. Get in touch and we will identify exactly where you are leaving points on the table before your next submission.

How Clearscope Helps

CDP disclosure sits at the intersection of carbon accounting, environmental management, climate risk assessment, and strategic communications. Doing it well — and scoring well — requires expertise across all four domains, plus an understanding of CDP’s specific scoring methodology.

We work with Irish companies through every stage of CDP disclosure and ESG reporting:

• Readiness assessment — evaluating your current data, governance, and environmental management processes against CDP questionnaire requirements, identifying gaps, and building a realistic preparation timeline
• Carbon accounting — building the Scope 1, 2, and 3 emissions inventory that forms the foundation of your CDP response, using methodologies that also satisfy CSRD and EU Taxonomy requirements
• Response strategy and drafting — developing responses that accurately represent your environmental management maturity while maximising score at each level of the CDP methodology
• CSRD integration — designing your data collection and governance structures so they serve both CDP and CSRD from the outset, avoiding duplicated effort and ensuring consistency across disclosures
• Verification preparation — preparing your emissions data and methodology documentation for third-party verification, which significantly improves your CDP score and strengthens your CSRD assurance readiness
• Year-on-year improvement — analysing your score feedback, benchmarking against sector peers, and building a multi-year plan to move from Disclosure through to Management or Leadership

CDP disclosure is a strategic investment, not just a reporting obligation. Done right, it builds the data infrastructure, governance processes, and internal expertise you need for CSRD, investor relations, green procurement, and supply chain engagement — all at once. Done poorly, it exposes gaps and inconsistencies that are visible to every investor and customer who requested your disclosure.

Contact us to prepare your CDP disclosure.

Frequently Asked Questions

What is CDP reporting?

CDP is a global voluntary disclosure system where companies report environmental data through standardised questionnaires on climate change, forests, and water security. Responses are scored from D- to A and shared with the investors and customers who requested them.

Is CDP reporting mandatory in Ireland?

CDP is voluntary, but effectively mandatory for companies whose investors or supply chain customers request it. Ignoring a request carries commercial consequences, and the data overlaps significantly with mandatory CSRD requirements.

How is a CDP score calculated?

Scores run from D- to A across four levels: Disclosure, Awareness, Management, and Leadership. Points are awarded for completeness, specificity, and evidence of action. The methodology is nuanced — how responses are framed matters as much as the underlying data.

When is the CDP submission deadline?

The platform opens in April with the deadline in late July, and scores are published in December. Preparation should begin at least three months before the window opens.

How does CDP relate to CSRD?

CDP and CSRD require much of the same data. CDP has aligned its questionnaire with the TCFD framework and ESRS standards, so data collected for CDP feeds directly into CSRD reporting — but maximising that synergy requires deliberate planning.