Recent developments in low energy neutrino physics: chances and challenges

Since their discovery in 1956 neutrinos have been extensively studied and used to reveal neutrino source properties as well as to search for physics beyond the Standard Model. Next to precision measurements of oscillation parameters in the existing standard 3-flavor framework, the key questions addressed nowadays are related to the absolute neutrino mass, the neutrino mass ordering and the existence of a CP violating phase. But also the search for the Majorana character of neutrinos, the existence of sterile neutrinos, of electromagnetic neutrino properties and non-standard quark-neutrino interactions are under investigation. This talk provides an overview about the most recent results in the low energy neutrino sector. A few experiments like Katrin, Borexino, Juno, Gerda, Stereo and Conus are exemplarily used to demonstrate recent technological challenges and progresses, but also the rich physics program covered with very small to very large sized projects.