Project Circular X is about experimentation with circular service business models. It is an ambitious research project funded by the European Research Council (ERC) which supports top researchers from anywhere in the world. Project Circular X will run from 2020-2025. The project is led by Principal Investigator Prof Dr Nancy Bocken, based at Maastricht Sustainability Institute (MSI) at the School of Business and Economics, Maastricht University. Through the research agenda, the aim is to facilitate a diverse range of organisations with the implementation of the circular economy. The project will take place in close cooperation with organisations – from small start-ups to large multinationals – who want to innovate towards the circular economy.