The CARISMA project is an an EU-funded project (Horizon 2020) running from 2015 to 2018. CARISMA supports the development and diffusion of options for climate change mitigation, both technologies and practices to reduce greenhouse gas emissions. Climate-friendly technologies and practices often already exist, yet for several reasons they do not enter the mainstream. Decision-makers in the public and private sectors alike are, for a variety of reasons, inclined to continue the high-carbon status quo. This holds for already developed technologies and practices, as well as for technologies and practices that are untested or in the research phase.