Over the past decade, cooperative climate action has become a central feature of global climate governance. Thousands of businesses, subnational governments, civil society organizations, and international partnerships have mobilized to complement and support multilateral and state-led efforts. Using insights from the CoAct Database (formerly N-CID), and data from a sample of 387 initiatives, this chapter takes stock of developments since 2013 and looks ahead to how cooperative action can contribute to the implementation of the Paris Agreement, particularly addressing priorities arising from the Global Stocktake (GST). Our analysis yields five headline findings.
1. Rapid expansion, but uneven focus. CCIs have multiplied since 2015 and increasingly address adaptation, yet mitigation continues to dominate. While themes such as energy, land use, and industry remain strong, adaptation-related themes, e.g., particularly water, oceans, and resilience, remain underrepresented.
2. Effectiveness is improving, but equity gaps persist.
Many CCIs now deliver more tangible outputs and report more systematically, yet overall output effectiveness has plateaued since 2018. Smaller and less-resourced initiatives often lag behind due to capacity constraints, while limited accountability mechanisms—such as monitoring, transparent governance, and membership control—continue to hinder performance.
3. Participation has broadened, but inclusivity remains limited. Participation of actors in CCIs has expanded, but leadership and decision-making remain concentrated among Northern and institutional actors. Indigenous Peoples and Local Communities (IPLCs) are largely absent from governance structures, while engagement of businesses, investors, and local civil society has stagnated in recent years.
4. Stronger alignment with global priorities is needed. Future orchestration should strengthen coherence between CCIs and priorities in the implementation of the Paris Agreement, for instance those emerging from the Global Stocktake (GST). Integrating adaptation, nature, and resilience more effectively—and fostering synergies across thematic axes such as energy–nature, food–energy, and cities–ecosystems—can enhance the systemic impact of cooperative climate action.
5. The next five years are critical. To sustain momentum and credibility, CCIs and orchestrators, such as the High-Level Climate Champions, COP presidencies and the UNFCCC secretariat, must focus on inclusion, capacity, and accountability—especially in underrepresented regions. Expanding implementation and participation in low- and middle-income countries will improve both effectiveness and procedural justice. Deliberate orchestration by COP Presidencies, policymakers, and leading CCIs can ensure that cooperative climate action evolves toward greater balance, legitimacy, and transformative impact.
While cooperative climate action has expanded and matured over the past decade, its transformative potential remains only partly realized, calling for deeper structural and systemic change. As the world moves on to implement the Paris Agreement, cooperative initiatives should help accelerate ambition, bridge gaps in implementation, and foster more equitable and effective global climate action.
Read Ten Years of Global Climate Action Insights from the CoAct Database
