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🗞️ Driving the news: Negotiations over Article 6.4 of the Paris Agreement — a UN-supervised carbon market mechanism — are reaching a pivotal stage, with new rules set to define what qualifies as a “high-integrity” carbon credit
• These rules could reshape global voluntary and compliance carbon markets by determining the eligibility of nature-based solutions (NBS), such as forest restoration or soil carbon projects
• Final decisions are expected by October 2025, but their influence is already being felt across carbon policy frameworks worldwide
🔭 The context: Article 6.4 aims to establish a centralised carbon crediting system, replacing the Kyoto Protocol’s Clean Development Mechanism and aligning carbon credit standards with evolving market integrity expectations
• As voluntary and compliance markets mature—mobilising over $100 billion annually — key jurisdictions, including the EU, India, and France, are aligning with Article 6.4 principles even before rules are finalised
• This mechanism is seen as critical to ensuring credibility and consistency across the fragmented carbon market landscape
🌍 Why it matters for the planet: If Article 6.4 excludes nature-based solutions due to stringent or impractical criteria on durability, baselines, or leakage, it could severely limit climate finance for ecosystems — undermining efforts to address biodiversity loss, protect livelihoods, and mitigate emissions in hard-to-abate sectors
• The risk lies in designing rules that are overly cautious and technically rigid, rather than pragmatic and science-informed, potentially sidelining one of the most scalable tools for near-term climate action
⏭️ What's next: The UN supervisory body is expected to finalise Article 6.4 crediting rules by October 2025. In parallel, national and corporate climate strategies may shift based on how these standards define "high integrity."
• If poorly aligned with real-world conditions, the rules could restrict supply, deter investment, and delay progress on net-zero targets
• Stakeholders from civil society, industry, and science are pushing for flexible mechanisms — such as buffer pools, insurance, and empirically informed baselines — to ensure NBS remain viable and credible
💬 One quote: “The bigger risk to our global climate goals is the risk of failing to invest in these efforts,” writes Lucy Almond, climate expert and nature advocate, urging the UN not to exclude nature-based solutions from future markets
📈 One stat: Carbon markets currently mobilise over $100 billion annually, with nature-based credits representing a significant share of the voluntary market pipeline
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