Regional spotlight: Corporate climate disclosures in China — what's different and why it matters

In May 2025, China's Ministry of Finance and nine other government agencies jointly released the country's first mandatory sustainability disclosure standards for listed companies, requiring approximately 5,300 firms on the Shanghai and Shenzhen stock exchanges to report Scope 1 and Scope 2 greenhouse gas emissions beginning with fiscal year 2027 filings. The standards, formally titled the China Sustainability Disclosure Standards (CSDS), arrived just 18 months after the International Sustainability Standards Board published its IFRS S1 and S2 baselines, making China one of the fastest major economies to adopt mandatory climate disclosure. Yet the Chinese framework diverges from its Western counterparts in fundamental ways: it prioritizes alignment with national carbon peaking and neutrality goals over investor-driven materiality, embeds state-directed industrial policy objectives directly into reporting requirements, and operates within a regulatory ecosystem where enforcement mechanisms, data verification infrastructure, and corporate disclosure cultures differ markedly from those in the EU or the United States.

Why It Matters

China accounts for roughly 30% of global greenhouse gas emissions, more than the EU and the United States combined. Any global assessment of corporate climate disclosure effectiveness that excludes China is incomplete by definition. For multinational corporations with Chinese supply chain exposure, understanding China's disclosure regime is operationally critical: approximately 40% of global manufacturing supply chains pass through Chinese facilities at some stage, and buyer-side disclosure requirements under the EU's CSRD and California's SB 253 increasingly require upstream Scope 3 data from Chinese suppliers (McKinsey, 2025).

The financial stakes are significant. Foreign direct investment into China reached $163 billion in 2024, with climate-related sectors including renewables, electric vehicles, and battery manufacturing representing 28% of total inflows (MOFCOM, 2025). International investors subject to SFDR, TCFD, or SEC reporting obligations need to understand how Chinese portfolio companies measure and report climate data, and where disclosures may not be directly comparable to global standards.

China's dual carbon targets, peaking emissions before 2030 and achieving carbon neutrality by 2060, function as the central organizing principle for climate policy. Corporate disclosure requirements are designed to serve these targets, not primarily to inform capital allocation decisions by global investors. This distinction shapes every aspect of the Chinese disclosure framework, from materiality definitions to assurance requirements to the role of state-owned enterprises.

Key Concepts

CSDS vs. ISSB: Structural Differences

The China Sustainability Disclosure Standards draw on ISSB frameworks but depart in several critical areas. First, materiality under CSDS follows a "double materiality plus policy alignment" model: companies must disclose both financial impacts and environmental impacts, but the environmental dimension is explicitly framed around contributions to national carbon peaking and neutrality targets rather than general stakeholder interests. Second, CSDS introduces sector-specific disclosure modules for 14 high-emission industries including steel, cement, aluminum, petrochemicals, and power generation. These modules prescribe specific emission calculation methodologies aligned with China's national emission factor databases rather than allowing companies to select from globally recognized protocols such as the GHG Protocol.

Third, CSDS mandates disclosure of "green transition plans," requiring companies to articulate how their capital expenditure, technology roadmaps, and operational changes align with sector-specific decarbonization pathways defined by the National Development and Reform Commission (NDRC). This goes beyond TCFD-style transition planning by linking corporate strategy directly to government industrial policy.

The Role of State-Owned Enterprises

State-owned enterprises (SOEs) occupy a unique position in China's disclosure landscape. The 97 centrally administered SOEs under the State-owned Assets Supervision and Administration Commission (SASAC) collectively account for an estimated 35 to 40% of China's industrial emissions. SASAC issued its own ESG disclosure guidelines for central SOEs in 2023, predating the broader CSDS framework. These guidelines require SOEs to publish standalone sustainability reports with climate-specific chapters, report progress against enterprise-level carbon reduction targets set by SASAC, and demonstrate alignment with Five-Year Plan energy intensity and carbon intensity targets.

In practice, SOE disclosures tend to be more comprehensive than private sector filings but carry distinct limitations: they emphasize absolute metrics such as total investment in green projects and number of clean energy installations rather than intensity-based performance indicators that allow comparison across companies and sectors. Independent verification of SOE climate data remains limited, with SASAC accepting internal audit as sufficient assurance for most reporting categories.

National Carbon Market Integration

China's national emissions trading system (ETS), launched in 2021 and covering approximately 2,200 power generation companies responsible for roughly 5 billion tons of CO2 annually, creates a direct link between corporate climate data and regulatory compliance. ETS-covered entities must submit verified annual emissions reports using methodologies prescribed by the Ministry of Ecology and Environment (MEE). These verified emissions data increasingly serve as the foundation for CSDS climate disclosures, providing a level of data consistency that voluntary disclosure frameworks in other jurisdictions often lack.

However, the ETS currently covers only the power generation sector. Expansion to seven additional sectors, including steel, cement, and aluminum, is planned for 2026 to 2028 but has experienced repeated delays. Companies in sectors not yet covered by the ETS face significant measurement infrastructure gaps: a 2025 survey by the China ESG Research Institute found that only 38% of listed companies outside the power sector had implemented continuous emissions monitoring systems, with the remainder relying on emission factor calculations with varying degrees of accuracy (China ESG Research Institute, 2025).

What's Working

China's top-down regulatory approach has achieved rapid adoption rates that voluntary frameworks struggled to match. Within 12 months of the draft CSDS release, 78% of CSI 300 index companies (China's equivalent of the S&P 500) had published some form of climate-related disclosure, up from 51% in 2023 (ChinaAMC, 2025). The integration of disclosure requirements with the national carbon market has created a verified emissions data foundation for the power sector that is arguably more robust than voluntary corporate reporting in many Western economies.

The Green Finance Committee of the China Society for Finance and Banking has developed standardized templates and reporting tools that reduce implementation costs for smaller listed companies. These tools, available free of charge through the China Securities Regulatory Commission (CSRC) portal, include automated emission factor lookups for 180 industry categories and pre-formatted reporting templates aligned with CSDS requirements. Early adopters report that template-based reporting reduces initial disclosure preparation time by 40 to 60% compared to building reports from scratch (PwC China, 2025).

Several Chinese companies have emerged as regional disclosure leaders. Contemporary Amperex Technology (CATL), the world's largest battery manufacturer, publishes climate disclosures aligned with both CSDS and ISSB standards, including Scope 3 emissions estimates across its global supply chain. LONGi Green Energy, the largest solar module manufacturer, has achieved third-party verified Scope 1 and 2 emissions reporting since 2022 and discloses product-level carbon footprints for its mono-crystalline silicon modules. BYD publishes transition plans that map capital expenditure to specific decarbonization milestones across its automotive, battery, and energy storage business segments.

What's Not Working

Data quality remains the most significant challenge. Outside the ETS-covered power sector, corporate emissions data in China relies heavily on default emission factors published by the MEE rather than facility-level measurements. These default factors, last comprehensively updated in 2022, do not reflect regional grid intensity variations, facility-specific fuel compositions, or process efficiency differences. A comparative study by Tsinghua University's Institute of Energy, Environment, and Economy found that emissions calculated using national default factors diverged from measured emissions by 15 to 45% across a sample of 87 industrial facilities, with systematic overestimation in some sectors and underestimation in others (Tsinghua University, 2025).

Third-party assurance infrastructure is underdeveloped relative to disclosure requirements. China currently has approximately 120 accredited verification bodies for carbon-related reporting, compared to over 400 in the EU. Many of these verification bodies are recently established entities with limited track records, and the accreditation framework does not differentiate between limited and reasonable assurance levels in the way that international standards do. CSDS Phase 1 requires only limited assurance for Scope 1 and 2 data, with reasonable assurance mandated from fiscal year 2029, giving the market four years to build verification capacity.

Scope 3 reporting presents particular difficulties. Global supply chain complexity, combined with limited upstream data sharing norms among Chinese suppliers, means that most companies default to spend-based estimation methods for purchased goods and services. The China Federation of Logistics and Purchasing estimates that fewer than 12% of Chinese manufacturing suppliers can provide product-level carbon footprint data to downstream buyers (CFLP, 2025). This creates a gap for multinationals attempting to build Scope 3 inventories from Chinese supply chain data.

Cross-border data comparability is hampered by methodological differences. Chinese grid emission factors, calculated by the MEE, use a generation-based approach that excludes transmission and distribution losses, while GHG Protocol-aligned factors typically include these losses. This means that Chinese companies reporting Scope 2 emissions using national factors will show systematically lower numbers than the same facilities calculated using GHG Protocol market-based or location-based methods. The discrepancy ranges from 5 to 12% depending on regional grid composition (World Resources Institute, 2025).

Key Players

Established Organizations

China Securities Regulatory Commission (CSRC): the primary regulator overseeing CSDS implementation and compliance for listed companies on the Shanghai and Shenzhen exchanges.

State-owned Assets Supervision and Administration Commission (SASAC): sets ESG disclosure requirements for 97 centrally administered state-owned enterprises, covering roughly 35 to 40% of industrial emissions.

Ministry of Ecology and Environment (MEE): administers the national carbon market, publishes emission factor databases, and oversees verification body accreditation.

PwC China: provides advisory services for CSDS implementation and has published benchmark analyses of disclosure quality across CSI 300 companies.

Startups and Innovators

Carbon Trust China: offers carbon footprint verification and supply chain emissions measurement services tailored to Chinese manufacturing companies supplying international buyers.

Carbonstop (Beijing): develops software-as-a-service carbon accounting platforms used by over 2,000 Chinese enterprises for emissions measurement and CSDS-aligned reporting.

ESG Enterprise (Shanghai): provides AI-powered ESG data extraction and reporting automation tools designed for Chinese regulatory frameworks.

Investors and Institutions

ChinaAMC (China Asset Management): one of China's largest asset managers, actively engages portfolio companies on CSDS compliance and publishes annual assessments of disclosure quality.

Climate Action 100+ Asia: coordinates investor engagement with Chinese high-emitting companies on transition planning and disclosure improvement.

Asia Investor Group on Climate Change (AIGCC): facilitates cross-border investor dialogue on disclosure comparability between Chinese and international standards.

Action Checklist

• Map Chinese supplier exposure across your supply chain and identify which suppliers fall under CSDS mandatory reporting requirements beginning fiscal year 2027
• Assess data comparability gaps between Chinese disclosure methodologies (MEE emission factors) and your organization's GHG Protocol-aligned Scope 3 calculations
• Engage key Chinese suppliers on product-level carbon footprint data availability using standardized request templates aligned with both CSDS and ISSB formats
• Review portfolio company disclosures for SOE-specific reporting patterns, noting the emphasis on absolute metrics versus intensity-based indicators
• Monitor ETS sector expansion timelines (steel, cement, and aluminum expected 2026 to 2028) as these will significantly improve verified emissions data availability
• Establish relationships with accredited Chinese verification bodies for supply chain data assurance, prioritizing those with cross-border accreditation
• Build internal capability to reconcile Chinese generation-based Scope 2 factors with GHG Protocol market-based and location-based methodologies

FAQ

Q: How do China's CSDS standards compare to the EU's CSRD for companies reporting under both? A: The most significant differences are in materiality framing, Scope 3 requirements, and assurance timelines. CSRD uses a double materiality approach focused on financial and impact perspectives, while CSDS adds a policy alignment dimension tied to national carbon targets. CSRD requires Scope 3 reporting from the outset for large companies, while CSDS Phase 1 covers only Scope 1 and 2 with Scope 3 requirements phased in from fiscal year 2029. CSRD requires limited assurance from 2024 with reasonable assurance from 2028, while CSDS requires limited assurance from 2027 with reasonable assurance from 2029. Companies subject to both regimes should expect to maintain parallel reporting processes for at least the initial compliance cycles.

Q: Can international investors rely on Chinese corporate climate disclosures for portfolio-level reporting? A: With important caveats. ETS-covered companies in the power sector provide verified emissions data of comparable quality to Western disclosures. For companies outside the ETS, data quality is more variable, and investors should apply adjustment factors to account for methodological differences in emission factor calculations. The 5 to 12% Scope 2 discrepancy from generation-based versus consumption-based grid factors should be explicitly noted in portfolio aggregation. Third-party verification by internationally accredited bodies provides additional confidence but is currently available for only a small fraction of Chinese listed companies.

Q: What are the enforcement mechanisms for non-compliance with CSDS? A: CSRC enforcement follows a phased approach. During the 2027 to 2028 transition period, non-compliant companies face "regulatory attention letters" and required corrective action plans rather than financial penalties. From fiscal year 2029, non-compliance can result in trading suspensions, restrictions on refinancing activities, and mandatory remediation under CSRC supervision. For SOEs, SASAC applies separate accountability mechanisms including executive performance evaluation adjustments tied to disclosure compliance. The practical enforcement intensity will depend significantly on CSRC's capacity to review filings at scale, which remains untested.

Q: How should multinationals approach Scope 3 data collection from Chinese suppliers? A: Start with high-impact supplier categories where emissions are concentrated, typically raw materials, components manufacturing, and logistics. Use Carbonstop or similar Chinese carbon accounting platforms that can generate supplier-specific emission estimates aligned with Chinese methodologies, then apply conversion factors for GHG Protocol compatibility. Participate in industry coalitions such as the China-EU Supply Chain Carbon Data Initiative to benefit from standardized data exchange protocols. Accept that spend-based estimates will be necessary for tier 2 and tier 3 suppliers for the foreseeable future, and document methodology limitations transparently in your Scope 3 disclosures.

Sources

• McKinsey & Company. (2025). China's Role in Global Supply Chains: Climate Data and Disclosure Implications. Shanghai: McKinsey Global Institute.
• Ministry of Commerce of the People's Republic of China (MOFCOM). (2025). 2024 Foreign Direct Investment Report. Beijing: MOFCOM.
• China ESG Research Institute. (2025). Corporate Emissions Monitoring Infrastructure Survey: Listed Company Readiness Assessment. Beijing: CESRI.
• ChinaAMC. (2025). CSI 300 ESG Disclosure Quality Report 2024-2025. Beijing: China Asset Management Co., Ltd.
• PwC China. (2025). CSDS Implementation Readiness: Benchmarking Chinese Listed Company Preparedness. Shanghai: PricewaterhouseCoopers Zhong Tian LLP.
• Tsinghua University Institute of Energy, Environment, and Economy. (2025). Emission Factor Accuracy Assessment: Comparing Default Factors with Measured Industrial Emissions. Beijing: Tsinghua University Press.
• China Federation of Logistics and Purchasing (CFLP). (2025). Supply Chain Carbon Data Capability Survey. Beijing: CFLP.
• World Resources Institute. (2025). Grid Emission Factor Methodologies: Cross-Jurisdiction Comparability Analysis. Washington, DC: WRI.