SUN4U is the free app that facilitates the aggregation of potential members of Renewable Energy Communities (CER) through geolocalized comparison groups. Enter your consumption, join a group, participate in discussions and discover how to save with solar energy, receiving information support and technical skills to create or join a CER. The App is a product of FEDERESCO and ICLEI Europe's Action Fund 2.0 program. Find out more on the website www.sun4u.it and find service providers, tools, financing solutions and useful resources.