Achieving global goals for access to energy and mitigation of climate change will require a quadrupling of present levels of solar photovoltaic (PV), a multiplication by nine of the wind power generation and a doubling of the geothermal power generation in the developing world by 2025. To reach this objective, large amounts of private funding will have to be unlocked to complement the limited public financing available. Yet most developing countries still lack a pipeline of bankable renewable energy (RE) projects for consideration by the private sector. To develop such bankable pipelines, countries must take a series of key steps to tackle critical risks perceived by the private sector while minimizing risks for the public sector. The present guidelines lay out a three-phase approach for privately financed sustainable RE projects. In the Planning phase, technical plans are made to enable the country to develop informed RE targets. A sustainable RE program is developed during the Strategy phase. In the Implementation phase, action is taken to execute the sustainable national RE program. This integrated approach enables countries to capitalize on the deployment of RE generation to fight climate change and support energy access but also to promote energy security, keep pace with rapidly growing electricity demand, and foster socioeconomic development.