This Project Development Manual has been developed to provide guidance to Papua New Guinea (PNG), national stakeholders, on the GCF and its funding opportunities, procedures, policies, and requirements. This manual also provides guidance to stakeholders on the GCF accreditation process, the GCF Readiness and Preparatory Support Programme, and the requirements for project/programme implementation and monitoring and evaluation. This manual is designed for use by all national stakeholders, and particularly project proponents that are developing and implementing GCF projects and programs. Understanding the above information is crucial for stakeholders to identify and develop a high-quality GCF climate change project/programme proposal to seek funding.