CDP Reporting Explained: How to Disclose Through CDP

The global movement toward environmental transparency has fundamentally shifted how companies approach sustainability reporting. One platform stands at the forefront of this shift: the Carbon Disclosure Project, or CDP. If your organization is serious about demonstrating environmental leadership, understanding CDP reporting and disclosure requirements is essential.

What is CDP and Why Environmental Disclosure Matters

The Carbon Disclosure Project is a global non-profit organization that manages the world's largest environmental disclosure system. Since its inception, CDP has become the gold standard for corporate environmental transparency, with over 580,000 companies from around the world using the platform to disclose their environmental impact and management strategies.

The Scale and Influence of CDP

CDP's reach extends far beyond a simple reporting database. The organization works with institutional investors managing over $130 trillion in assets, major multinational corporations, and regulatory bodies across multiple jurisdictions. When a company discloses through CDP, it's communicating with some of the world's most influential decision-makers regarding corporate sustainability.

The platform operates on a voluntary basis globally, yet its influence has made disclosure increasingly expected - particularly among large enterprises, multinational corporations, and suppliers within major supply chains. This voluntary-yet-expected dynamic creates a unique position where CDP participation has become virtually essential for companies seeking capital, customers, and talent from environmentally conscious markets.

Why Companies Disclose to CDP

Organizations disclose through CDP for several compelling reasons. First, investor pressure has become substantial. Shareholders want to understand climate risks and opportunities facing their investments. Second, major customers now require supply chain transparency, often requesting or mandating CDP disclosure from their suppliers. Third, regulatory bodies increasingly reference or align with CDP metrics when developing climate-related reporting standards.

Understanding CDP Questionnaires: Climate Change, Water Security, and Forests

CDP operates three distinct questionnaires, each addressing a critical environmental issue. The Climate Change questionnaire is by far the most widely completed, attracting the largest number of disclosers globally. The Water Security questionnaire targets companies whose operations depend heavily on freshwater resources. The Forests questionnaire addresses companies involved in commodity supply chains linked to deforestation.

The CDP Climate Change Questionnaire

The Climate Change questionnaire is the cornerstone of CDP disclosure. It asks companies to detail their greenhouse gas emissions, climate governance, risk management processes, and climate-related strategy. The questionnaire is structured around 16 core modules that progressively move from emissions data through to strategy and targets.

The questionnaire requires companies to provide comprehensive Scope 1, Scope 2, and Scope 3 greenhouse gas emissions data. This aligns directly with the GHG Protocol framework, making it essential that your organization has established accurate carbon accounting practices before completing CDP disclosure. The questionnaire also asks about emissions verification, science-based targets, and alignment with climate scenarios.

Companies must disclose their climate governance structure, including board oversight of climate issues, executive accountability for climate performance, and incentive mechanisms tied to climate outcomes. The questionnaire then moves into detailed questions about climate risks, opportunities, and financial impact - areas where many organizations struggle due to incomplete data or insufficient climate risk analysis.

Water Security and Forests Questionnaires

The Water questionnaire is typically completed by companies in water-intensive sectors such as agriculture, food and beverage, energy, and mining. It requires disclosure of water withdrawals, consumption, and quality impacts, along with water-related governance and strategy.

The Forests questionnaire targets companies with exposure to commodity-driven deforestation, including agricultural producers, food companies, and forestry-related businesses. It assesses supply chain transparency and commitment to deforestation-free sourcing.

How the CDP Scoring System Works: From D to A

CDP evaluates company disclosures through a rigorous scoring methodology that assigns letter grades from D to A. Understanding these scoring levels is crucial for setting realistic disclosure targets and measuring progress.

The Four Scoring Levels Explained

Disclosure (D): This entry-level score indicates that a company has completed the CDP questionnaire and provided some level of environmental data. However, a D score signals incomplete or underdeveloped environmental management systems. The company may lack comprehensive emissions data, clear governance structures, or credible climate strategy.

Awareness (C): A C score represents awareness of environmental issues and some management systems in place. Companies at this level have typically completed more thorough emissions inventories and identified climate risks. However, they may lack clear targets, science-based commitments, or comprehensive Scope 3 emissions management.

Management (B): B-score companies demonstrate active management of environmental issues. They've established emissions reduction targets, implemented climate strategy, and show progress against stated objectives. Scope 3 emissions are typically calculated and managed, and governance structures are well-defined.

Leadership (A): The A score represents environmental leadership. These companies excel in transparency, target-setting, and emissions reduction performance. They typically have science-based targets, comprehensive supply chain engagement, and demonstrated emissions reductions year-over-year. Only a small percentage of disclosers achieve an A score.

What Each Score Requires

Reaching each scoring level requires progressively more robust environmental management. To move from D to C, strengthen your emissions quantification and establish basic governance oversight. To achieve B status, develop credible targets with timelines and demonstrate early-stage implementation. Reaching A requires sustained performance, comprehensive Scope 3 management, and leadership visibility on climate commitments.

Who Asks Companies to Disclose: Investors, Customers, and Regulators

CDP's power derives from the organizations requesting disclosure. Understanding who is asking - and why - helps companies prioritize CDP completion within their broader ESG strategy.

Investor Demand for Climate Transparency

Institutional investors have become increasingly vocal about climate risks in their portfolios. Over $130 trillion in assets are now managed by organizations that factor climate change into investment decisions. Many of these investors directly request or require CDP disclosure from their portfolio companies. This investor pressure has made CDP disclosure effectively mandatory for publicly listed companies in developed markets.

Supply Chain Requirements from Multinational Customers

Major multinational corporations now routinely request or require CDP disclosure from suppliers. Technology companies, consumer goods manufacturers, and retailers use CDP data to assess supply chain climate risks. Many Tier 1 suppliers report that customer requests represent their primary motivation for CDP disclosure.

Regulatory Alignment and Evolution

Regulatory bodies are increasingly aligning national and regional climate-related reporting standards with CDP's methodology. The CSRD, SECR in the UK, and other regulations reference or mirror CDP's questionnaire structure. Understanding this regulatory alignment helps companies use single disclosures to satisfy multiple regulatory obligations simultaneously.

CDP and CSRD Alignment: Streamlining Your Disclosure

For companies subject to the Corporate Sustainability Reporting Directive (CSRD), understanding how CDP data maps to CSRD requirements can dramatically streamline reporting workflows.

How CSRD Data Maps to CDP Questions

The CSRD requires double materiality assessment, which identifies both financial and environmental impacts. CDP's questionnaire similarly requires companies to assess climate impacts and financial consequences. The emissions data required by CSRD - Scope 1, 2, and 3 - directly corresponds to CDP Climate questionnaire sections.

CSRD materiality findings essentially determine which CDP questions are most relevant to your organization. A company that identifies climate risk as material to stakeholders will need to provide substantive answers to CDP's climate risk questions. This alignment means that thorough CSRD double materiality analysis directly informs comprehensive CDP disclosure.

The CSRD requires climate scenario analysis under both 1.5°C and current policy trajectories. CDP's questionnaire includes questions about climate scenario alignment. Companies can use identical scenario analysis to address both regulatory frameworks, reducing duplication and ensuring consistency across reports.

Timing and Compliance Strategy

CSRD mandates climate disclosure starting in 2026 for large in-scope companies, with phased implementation extending through 2028. CDP disclosure timelines vary but typically align with calendar years. Strategic companies structure their climate data collection to support both CSRD and CDP disclosure simultaneously, using single carbon accounting systems - like Greenio - to generate compliant data for multiple regulatory frameworks.

Getting Started: Building Your CDP Disclosure Strategy

Successful CDP disclosure requires more than simply answering the questionnaire. It demands foundational work in emissions accounting, governance alignment, and strategic planning.

Start by establishing comprehensive emissions inventories covering Scope 1, Scope 2, and Scope 3 emissions using the framework. Most organizations using carbon accounting platforms like Greenio can generate this data systematically. Second, assess which of your operations and supply chain segments represent material climate risks. This assessment informs which questionnaire sections require detailed response.

Third, develop or refine climate governance structures. CDP explicitly evaluates board and executive accountability for climate performance. Ensure your organization can clearly articulate who owns climate strategy, how performance is monitored, and how accountability is enforced. Finally, establish or clarify climate targets aligned with science-based methodologies like SBTi. CDP scoring heavily weights companies with credible, science-based targets.

Frequently Asked Questions About CDP Reporting

What is CDP and why should my company disclose?

CDP is the world's largest environmental disclosure platform, used by institutional investors managing $130+ trillion in assets. Disclosure demonstrates climate transparency, satisfies investor and customer demands, and increasingly aligns with regulatory requirements. For companies subject to CSRD or seeking capital from global investors, CDP disclosure has become effectively mandatory.

How does the CDP scoring system work?

CDP assigns scores from D (Disclosure) to A (Leadership). D indicates basic questionnaire completion. C shows environmental awareness and some management systems. B demonstrates active management with targets and implementation. A represents leadership with science-based targets, verified progress, and comprehensive supply chain engagement. Only about 5-10% of disclosers achieve A scores.

Is CDP mandatory or voluntary?

CDP disclosure is technically voluntary globally. However, investor requests and supply chain requirements have made it effectively mandatory for large publicly listed companies and multinational suppliers. Regulatory developments are gradually converting voluntary disclosure into compliance obligations in jurisdictions like the EU under CSRD requirements.

How do I get an A score on CDP?

Achieving an A score requires: science-based emissions reduction targets, comprehensive Scope 3 emissions management with supplier engagement, verified emissions data, demonstrated year-over-year emissions reductions, climate scenario alignment, and transparent board-level governance. Most A-scoring companies have invested substantially in climate strategy implementation, not just disclosure.

Can I use the same emissions data for both CDP and CSRD?

Yes - in fact, this is a recommended strategy. Both frameworks require Scope 1, 2, and 3 emissions calculated using the GHG Protocol. CSRD materiality findings inform which CDP questions are most relevant. Companies using integrated carbon accounting platforms can generate single, verified emissions datasets that satisfy both requirements, reducing duplication and ensuring consistency across regulatory filings.

Conclusion: Making CDP Disclosure Strategic

CDP reporting represents far more than a checkbox compliance exercise. It's a strategic opportunity to demonstrate climate leadership, satisfy investor and customer demands, and build the emissions management infrastructure required by emerging regulations like the CSRD.

The most successful companies approach CDP disclosure as an integrated component of broader climate strategy, not a separate reporting burden. By establishing robust greenhouse gas accounting, developing credible climate targets, and communicating genuine commitment to emissions reduction, organizations can transform CDP disclosure into a competitive advantage.

Whether you're beginning your climate disclosure journey or targeting A-level performance, thoughtful CDP participation signals serious commitment to the net-zero transition. The companies excelling in this space aren't those simply answering questionnaires - they're those embedding climate accountability into governance structures and business strategy from the top down.