Private investors have a pivotal role to play in closing the multi-trillion dollar climate investment gap. Yet, the way they operate, their risk return expectations, and the way they view the threats and opportunities presented by climate change, are often not well understood by development and policy professionals. 'The Ecosystem of Private Investment in Climate Action' report acts as a resource guide for any stakeholders interested in better understanding the broader ecosystem of private investment and the market facilitators that impact and enable climate-aligned investment, including how they interact with public actors.