The estimates for additional investments needed in developing countries to tackle the mitigation challenge are far beyond the currently available resources. This will require mobilizing resources at considerable scale without delay to deliver finance, capacity and technology and maximizing their leverage on public and private investment flows to effectively catalyze a shift towards more climate-friendly outcomes. This note highlights a few examples of how MDAs have been successfully leveraging climate finance in the development context, by innovating, demonstrating and catalyzing transformation, to tackle a set of barriers and accelerate adoption and diffusion of cleaner and safer technologies and to favor uptake by private sector.