This guidebook by the United Nations Environment Programme (UNEP) Technology Needs Assessment (TNA) project aims to assist developing countries in speeding up the transfer, deployment and diffusion of mitigation technologies, thus enabling countries to contribute to climate change mitigation while pursuing national development goals. The guidebook covers both mitigation projects (e.g. a wind farm or a solar power generation facility) and programmes (e.g. a credit line for financing energy efficiency projects in small and medium-sized enterprises or bulk procurement and distribution of compact fluorescent lamps to households). Emphasis is on multilateral and bilateral sources of financing, but the guidebook also includes an overview of private funding sources and public-private partnerships (PPPs). It also provides general guidance on the preparation of high quality project and programme proposals.