Reliable greenhouse gas (GHG) emissions data are becoming essential not only for climate policy but also for financial decision-making. Across Asia, governments are expanding monitoring, reporting, and verification (MRV) systems to support carbon pricing, while financial regulators are introducing corporate climate disclosure frameworks aligned with the International Sustainability Standards Board (ISSB).
Although both systems rely on emissions data, they serve different governance purposes. MRV systems generate facility-level emissions data used to determine regulatory obligations under carbon pricing mechanisms. Corporate disclosure frameworks, in contrast, organize emissions information at the enterprise level for investors and financial markets. As climate policies expand across the region, one of the key challenges is making sure these two systems develop in a more connected and coherent way.
Two Systems of Emissions Data
Carbon pricing mechanisms require accurate emissions measurement to determine legal obligations. The most established example is the European Union Emissions Trading System (EU ETS), launched in 2005. Under this cap-and-trade system, the European Union sets an overall emissions cap and distributes emissions allowances to regulated entities. Companies must surrender allowances equivalent to their verified emissions at the end of each compliance period.
If emissions fall below a company’s allowance allocation, the firm may sell surplus allowances. If emissions exceed its allowances, it must purchase additional permits on the market. Emissions therefore translate directly into financial costs, making emissions management part of corporate decision-making.
Similar systems have emerged in Asia. The Republic of Korea introduced its emissions trading system in 2015, covering companies emitting more than about 125,000 tons annually or facilities exceeding 25,000 tons. Singapore has adopted a carbon tax covering facilities emitting more than 25,000 tons per year. Although the institutional designs differ, these systems share a common foundation: strict MRV procedures.
Under MRV frameworks, facilities monitor emissions using regulator-approved methodologies and submit reports subject to independent third-party verification. Verified emissions determine regulatory obligations, such as allowance surrender or tax payments. In this context, verification focuses on measurement accuracy and regulatory compliance.
Corporate climate disclosure frameworks serve a different governance function. Standards such as the ISSB’s IFRS S2 integrate emissions data into financial and sustainability reporting to inform investors. Unlike MRV systems, corporate disclosure operates at the enterprise level. Companies report emissions on a consolidated basis across their entire corporate group, including overseas subsidiaries. Emissions are categorized according to the GHG Protocol framework: Scope 1 for direct emissions, Scope 2 for purchased energy, and Scope 3 for value-chain emissions.
Here, emissions data are used to evaluate corporate transition risks, climate strategies, and financial exposure to climate policy. Verification procedures therefore differ from those used in MRV systems. Corporate disclosure frameworks typically begin with limited assurance, which assesses whether reported information is free from material misstatements rather than determining regulatory compliance.
Strengthening Climate Data Governance in Asia
Across Asia, MRV systems and corporate climate disclosure frameworks are expanding simultaneously, often under different regulatory authorities. Environmental ministries typically oversee emissions reporting linked to carbon pricing, while financial regulators supervise corporate disclosure frameworks aligned with international reporting standards.
This institutional separation can create coordination challenges. Companies subject to both systems may face duplicative reporting requirements, while differences in reporting boundaries and timelines can lead to fragmented emissions datasets.
Evidence from an Asian Development Bank Institute survey of financial regulators in Asia highlights these challenges. The results show that capacity building remains the most urgent priority. About 50% of respondents identified training and technical capacity development as the most important form of international support. Approximately one-third highlighted the need to strengthen emissions management systems, including emissions trading system design and improvements in data quality. By contrast, fewer respondents prioritized technical guidance for ISSB implementation, interoperability between reporting systems, or digital reporting infrastructure. Each of these areas received about 16.6% of responses. These findings suggest that many Asian economies are still in the early stages of developing the institutional capacity required to operate emissions management systems effectively.
More broadly, a common pattern is emerging across the region. Corporate climate disclosure systems often develop first, driven by capital market integration and investor demand for climate-related information. Carbon pricing systems tend to follow later as environmental regulatory frameworks evolve.
A Practical Way Forward
Given the diversity of institutional arrangements across Asia, full harmonization between MRV systems and corporate disclosure frameworks is neither feasible nor necessary. Instead, policymakers should focus on improving coordination through what might be called “structured interoperability.”
Under this approach, MRV systems and corporate disclosure frameworks remain institutionally distinct, but they become better connected through data compatibility and institutional coordination. Facility-level MRV data can provide a reliable basis for Scope 1 emissions reporting in corporate disclosures. Stronger cooperation between environmental ministries and financial regulators can help align reporting timelines, definitions, and verification practices. Regional cooperation can also support capacity building in verification standards, emissions data management, and digital reporting systems.
As climate policies expand, emissions data are increasingly being used both for regulatory compliance and for investor information. Strengthening climate data governance by connecting these two systems will therefore be a central challenge for climate policy in Asia.
Read the ADBI policy brief on Climate Data Governance in Asia.
