The Global Environment Facility (GEF) supports climate adaptation efforts mainly in the least developed countries. The Challenge Program for Adaptation Innovation aims to test and validate scalable investment approaches, business models, partnerships, and technologies. The GEF accepts project concepts with a total value of US$10 million. Concept notes should request no more than US$2 million. Emphasis will be placed on concepts that promote innovation and risk taking for climate adaptation impact. Concept notes can be submitted by any public, private or civil society organization. The deadline for concept notes is 22 August 2021. Link