It contributes to the research work of the OECD Centre on Green Finance and Investment. The authors would like to acknowledge review and comments received from the following OECD secretariat colleagues: Liwayway Adkins, Galina Alova, Wiebke Bartz, Emilio Chiofalo, Paul Horrocks, (Development Co-operation Directorate), Kate Eklin (Development Centre), Raphael Jachnik, Mariana Mirabile, Robert Youngman (Environment Directorate) and Giovanni Maria Semeraro (Education Directorate). In particular, it has benefited from insights gained from a collaborative workshop between DAC ENVIRONET and the Donor Committee for Enterprise Development Green Growth Working Group on “Development Co-operation and the Environment: Engaging the private sector for green growth and climate change” in March 2016.