Across Asia, carbon markets are taking shape with remarkable speed and ambition.
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Governments are designing compliance systems, passing legislation, and setting increasingly clear climate targets, building national frameworks that simply did not exist a decade ago.
This momentum is worth recognising. It reflects a region moving decisively to translate climate ambition into practical systems that can mobilise finance and drive emissions reductions at scale.
But this progress is also creating a new reality: a growing ecosystem of carbon markets, each designed around distinct national priorities, policy frameworks, and economic contexts.
Countries are building systems that reflect their own development pathways and priorities, whether through emissions trading schemes, carbon taxes, or hybrid approaches that incorporate carbon credits.
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Many national markets will function effectively on their own. But without coordination, they risk becoming isolated, limiting the ability of carbon finance to flow efficiently across borders and unfold its full impact.
Countries that include carbon credits, are doing so with a clear understanding that carbon finance, generated by the sale of these credits, can play a critical role in supporting domestic targets while connecting to global climate goals. The opportunity now is to ensure that this diversity evolves into something greater than the sum of its parts.
Because as more national systems come online, a new question related to carbon markets in particular is emerging: not whether these markets will work individually, but whether they will work together. If they do, the result could be a connected, efficient, and scalable global carbon market. If they do not, the risk is fragmentation.
Many national markets will function effectively on their own. But without coordination, they risk becoming isolated, limiting the ability of carbon finance to flow efficiently across borders and unfold its full impact. In concrete terms, this can create friction. Credits generated in one system may not be recognised in another one.
Standards underpinning the markets may diverge. Verification processes may need to be repeated. Projects that could supply into multiple markets may be constrained to just one. Over time, these inefficiencies can slow investment, increase costs, and make it harder to scale climate action at the pace required.
There is also a broader consideration: trust.
The success of carbon markets as a whole depends on confidence, that a credit represents real, measurable impact, and that it can be understood and valued consistently across jurisdictions.
As markets grow, maintaining that confidence becomes even more important. And that requires a degree of alignment. This is where interoperability comes in.
Interoperability is not about creating a single, uniform market. Nor is it about reducing national control. It is about ensuring that different systems can recognise and work with one another, so that credits move efficiently across borders without duplication or delay, and so that confidence in what a credit represents holds regardless of where it was generated or where it is used.
In practice, this means aligning national markets around common denominators, independent crediting programmes like Verra’s Verified Carbon Standard (VCS) Programme, building registry infrastructure that can be read across jurisdictions, and ensuring accounting frameworks are consistent with international mechanisms such as Article 6 of the Paris Agreement.
Encouragingly, this is already beginning to happen.
Singapore, for example, has taken a proactive approach to enabling cross-border cooperation, establishing bilateral agreements that allow credits to move between jurisdictions while maintaining national oversight. At the same time, it has introduced additional safeguards, demonstrating that interoperability and high standards can reinforce one another.
Indonesia offers a complementary model, building a carbon market that is nationally governed but internationally recognised: credible to buyers, accessible to investors, and functional for project developers operating across borders.
These examples show that interoperability is not a theoretical concept, but one that is already being built deliberately and pragmatically. The next step is to scale it. And this is where the voluntary carbon market (VCM) has an even more important role to play.
For nearly two decades, the VCM has developed much of the infrastructure that today’s systems now look to: methodologies, registries, and verification processes that allow carbon credits to be issued, tracked, and trusted across geographies.
It has done so while continuously evolving, strengthening integrity, improving transparency, and channeling climate finance to projects and communities that would otherwise struggle to access it.
In a world of increasingly diverse national systems, this matters. Because the VCM provides a shared foundation; a common language that enables different systems to connect without requiring them to be identical.
It offers a way to bridge national markets.
This does not mean that all systems must rely on the same standards, or that national priorities should be overridden. But it does mean that building on a selection of common proven, high-integrity frameworks can accelerate progress and reduce unnecessary complexity.
It also helps ensure that quality and credibility remain consistent as markets scale.
The VCM did not reach its current level of rigour overnight. It is the result of years of iteration, learning, and improvement. Maintaining that trajectory, in support of newer emerging systems, will be critical to sustaining trust across the broader ecosystem.
Building interoperability into these systems from the outset is significantly easier than trying to retrofit it later. And doing so can unlock a more connected, efficient, and impactful global market.
The choices being made today will shape the impacts carbon markets can have for decades to come.
Asia is uniquely positioned to lead the next phase into the future. It has the policy momentum, the emerging national markets, and the supply of projects needed to drive meaningful emissions reductions.
What it needs now is the architecture to connect these elements. If that happens, the region will not only advance its own climate goals but help define how carbon markets function globally.
And at a moment when the world is looking for practical ways to scale climate action, that leadership could not be more important.
Mandy Rambharos is the chief executive officer of Verra.
