The Copernicus Climate Change Service (C3S) currently includes operational predictions for seasonal timescales, as well as infrastructure for accessing climate projections for centennial timescales. In this project prototype services for climate predictions targeting the time horizon of years to decades ahead will be developed. The goal is to develop precursors for decadal prediction services targeting the time horizon when climate variability and anthropogenic climate change are expected to have comparable magnitude, and thus both need to be carefully considered and combined in creating outlooks of relevance to users. The work in this tender will demonstrate capability and applicability of predictive information on such timescales and complement related activities underway in the research community. Each partner, DWD (Germany), BSC (Spain), UKMO (United Kingdom) and CMCC (Italy), will work on a different climate service tailored to the needs of a specific stakeholder, thus covering four different sectors, respectively: infrastructure, agriculture, insurance and the energy sector. In particular, CMCC collaborates with ENEL Hydropower to develop a prototype service based on multi-model decadal predictions.