To achieve climate neutrality, everyone in the public and private sectors will need to chip in and work together: municipal governments, industry and citizens. In this fact sheet, we provide an overview of publicprivate partnerships (PPPs). We describe what PPPs are, present some of the most common PPP models, look at the advantages, risks and key success factors of PPPs and present some examples of PPPs around the world. This fact sheet draws upon research carried out by the Viable Cities’ Finance project, which assesses how cities can fund their investments in sustainability, looking at nine Swedish municipalities.