Scaling up climate finance requires addressing several key challenges. Replication of projects needs to consider balancing mitigation and adaptation funding as well as modifying projects to local contexts. Information sharing and strong institutions are important to understand what approaches are most effective and implement climate actions. Reducing risks, costs, and delays can help attract more private sector finance for climate solutions. Future work should explore improving adaptation finance, using monitoring and evaluation to identify best practices, and incentivizing greater climate investment through a new international agreement.