COP30: Carbon Markets Move from Framework to Execution
COP30 marked a clear shift in global climate discussions—from ambition-setting toward execution.
The focus in Belém moved beyond whether climate finance is needed, centering instead on how carbon markets and international cooperation mechanisms can effectively convert capital into measurable and verifiable emission reductions.
A key signal from COP30 was the continued acceleration of Article 6 of the Paris Agreement. Article 6.2 remains the most advanced pathway, with bilateral cooperation already being operationalized by countries such as Japan and Switzerland through ITMO transfers supported by increasingly robust MRV frameworks. These developments are laying the foundation for a more interoperable international carbon market with stronger linkages to compliance systems.
Progress under Article 6.4 has been slower, but COP30 delivered an important milestone with the approval of the first UN-sanctioned mitigation methodology. With the first issuance of A6.4ERs expected as early as 2026, the market is moving closer to a globally supervised crediting mechanism that could, over time, bridge voluntary and compliance demand.
Beyond the UN framework, COP30 also highlighted emerging efforts to reshape the global carbon market architecture. Brazil’s proposed “Open Coalition on Compliance Carbon Markets” signals a shift toward coordinated carbon pricing systems across jurisdictions. The initiative aims to align market rules, enhance transparency, and strengthen consistency in MRV systems and crediting standards, thereby reducing disparities across national compliance markets.
Under the current landscape, regulated carbon markets vary significantly in design and credit usage rules. For companies operating across jurisdictions, this creates a fragmented regulatory environment—requiring them to navigate multiple systems simultaneously, increasing compliance costs and operational complexity. The coalition reflects a growing ambition among countries to reduce these frictions through coordination, and to actively shape global carbon market rules rather than passively responding to unilateral mechanisms such as the EU’s CBAM.
These developments reinforce a broader structural trend: regulated carbon markets are expected to become the primary driver of global carbon demand. According to BNEF, there are now over 80 carbon pricing systems globally, with approximately 40% already allowing the use of carbon credits—a share that continues to rise.
In this context, the voluntary carbon market (VCM) is not disappearing, but evolving. Originally viewed as a transitional mechanism, the VCM is increasingly becoming a complementary tool that supports the implementation of Article 6 and broader compliance markets. As a result, the carbon market is no longer a single system, but a structurally segmented ecosystem—where different types of credits serve different buyer needs across voluntary and regulated contexts.
At the same time, recent developments highlight an important nuance: alignment with Article 6 does not necessarily equate to high-quality carbon credits.
Criticism from organizations such as Carbon Market Watch suggests that the Article 6 framework does not inherently guarantee environmental integrity, as credit quality remains heavily dependent on host-country governance. This concern is further supported by rating agency analysis indicating that a significant portion of CORSIA Phase 1 (2024–2026) eligible credits—up to 81%—are rated “BB” or “B”, reflecting a low likelihood of delivering the claimed emission reductions.
In addition, market discussions around the Paris Agreement Crediting Mechanism (PACM) have raised concerns that a substantial share of A6.4 credits may originate from the transition of legacy CDM projects. Given longstanding criticisms of CDM credit quality, some market participants question whether A6.4 represents a fundamental improvement, or a continuation of existing structural weaknesses.
These dynamics suggest that while Article 6.2 and 6.4 represent important progress at the policy level, quality differentiation will remain a critical factor at the market level. Market participants should avoid assuming that Article 6-aligned credits are inherently high-quality, and instead continue to rely on independent assessment frameworks and rigorous due diligence.
At the same time, it is important to recognize that Article 6-aligned credits are already demonstrating stronger pricing signals in the market, reflecting their policy relevance and potential compliance linkage.
Welhunt View
We believe COP30 marks the beginning of a policy-integrated carbon market, where compliance systems, international cooperation mechanisms, and voluntary markets are becoming increasingly interconnected.
In this evolving landscape, the carbon market is shifting from a single, voluntary-driven system toward a structurally segmented ecosystem shaped by policy alignment, regulatory demand, and buyer-specific needs.
While Article 6 will play a central role in shaping future market architecture, quality and credibility will remain the key differentiators. The ability to navigate the gap between policy alignment, credit integrity, and pricing signals will define competitive advantage in the next phase of carbon market development.