This issue brief considers six projects that are using resources from one or all of these sources: The Global Environment Facility (GEF), carbon finance, and the Clean Technology Fund (CTF) (who constitute the bulk of dedicated funding for low-carbon development), in combination with development finance to advance low-carbon development. It lays out a conceptual basis for how GEF, carbon finance, and CTF resources can fit together to make a wider range of mitigation projects financially and economically attractive.