The Mitigation Action Facility supports ambitious climate mitigation initiatives that help societies transition towards carbon-neutral development. Central to its Theory of Change is the concept of transformational change, defined as catalytic shifts in systems and behaviours triggered by disruptive climate actions. Rather than focusing only on direct emissions reductions, projects supported by the Facility aim to reshape markets, strengthen institutions, and influence policy long after funding has ended.
This paper brings together key findings from across the Mitigation Action Facility portfolio to show how transformational change is achieved in practice. Drawing on project implementation and evaluation evidence, it highlights the pathways through which targeted climate actions create lasting, system-wide impact.
Across the portfolio, three core insights stand out. Transformational change unfolds gradually and depends on sustained implementation and continuous learning. Projects that have had the time to pilot solutions, adapt approaches, and embed them within existing systems are far more likely to generate systemic effects. Financial mechanisms emerge as particularly powerful drivers of change, as they unlock investment, support replication, and enable scaling across markets. At the same time, policy integration proves critical in translating successful demonstrations into widespread adoption, ensuring that climate actions are anchored within national and sectoral frameworks.
Measuring transformational change remains complex, but the Mitigation Action Facility has developed dedicated tools to capture progress. The M3 Indicator, one of the Facility’s Mandatory Core Indicators, is specifically designed to assess whether supported activities are likely to catalyse impacts beyond individual projects. It examines the potential for scaling, replication, and broader systemic transformation, providing evidence of how projects contribute to long-term change.
Evidence from across the portfolio shows that time is a decisive factor. Projects launched under earlier funding calls, particularly Calls 1 to 5, demonstrate higher levels of transformational progress. With more years of implementation, these initiatives have been able to refine low-carbon solutions, develop tailored financial mechanisms, and strengthen stakeholder engagement. By contrast, projects in earlier stages of delivery are still building the foundations needed for system-wide change, underscoring the importance of continuity and long-term commitment.
The India Waste Solutions for a Circular Economy project illustrates how transformational change develops gradually. Launched in 2020, the project aimed to support a sector-wide transition towards low-carbon municipal solid waste management by piloting and scaling integrated systems in five Indian cities. Early efforts focused on source segregation and the design of a Risk Sharing Facility, with promising but localised results. Over time, sustained engagement led to broader systemic effects, including expanded access to finance, replication of core models beyond project cities, and measurable improvements in waste treatment rates at the national level. By combining financial innovation, technical assistance, policy support, and capacity building, the project helped break long-standing path dependencies and shift market behaviour across the waste sector.
Well-designed financial mechanisms consistently emerge as some of the strongest enablers of transformational change. Instruments such as guarantee funds, risk-sharing facilities, and refinancing models reduce investment risk while signalling long-term viability to both public and private actors. Across the portfolio, these mechanisms have not only mobilised private capital but also helped create new markets, support early movers, and integrate financial innovation with policy reform. Their effectiveness lies in being tailored to local contexts, aligned with national priorities, and designed to transition from donor support to commercial sustainability.
The Brazil Transformative Investments for Industrial Energy Efficiency project demonstrates this dynamic in action. Since 2020, the project has operated a guarantee fund to address financial barriers to energy efficiency investments among small and medium-sized enterprises. By reducing perceived lending risks and unlocking capital flows, the initiative helped establish energy efficiency as a viable market segment. Its success led to national-level expansion, supported by new policy frameworks and financial instruments that embed energy efficiency within Brazil’s industrial and energy strategies. These developments highlight how financial mechanisms, when fully operational, can drive lasting sectoral transformation.
Policy integration plays a decisive role in sustaining and scaling project impacts. Across the Mitigation Action Facility portfolio, projects that align closely with national strategies and sectoral frameworks are far more likely to achieve catalytic effects beyond their implementation period. When governments adopt project-supported approaches into national standards, financing frameworks, or monitoring systems, impacts quickly extend beyond initial pilot sites and often spread across regions or entire sectors.
The Thailand Sustainable Rice project offers a clear example. By supporting the adoption of national low-emission rice standards, the project helped embed climate-smart practices within the country’s agricultural policy framework. This integration strengthened institutional capacity, enabled the development of a distinct low-emission rice value chain, and supported geographic expansion beyond initial target areas. The strong policy foundation also helped secure follow-on funding, allowing low-emission and climate-resilient rice farming to scale nationwide.
Taken together, these findings show that transformational climate action is neither immediate nor accidental. It requires time, trusted financial mechanisms, and strong policy anchoring. The evidence from the Mitigation Action Facility demonstrates that when these elements come together, targeted climate actions can catalyse enduring change across markets, institutions, and behaviours, driving societies closer to a sustainable, low-carbon future.
