This one-day symposium will focus on the latest advances in the use of operando techniques to gain deeper understanding of the growth, processing, functionality and performance of novel energy and device materials. Organised by Prof Stephan Hofmann, University of Cambridge, Director of NanoDTC, and Prof Robert Weatherup, University of Oxford, Royce Research Area Lead for Electrochemical Systems, this event aims to build an interdisciplinary network of researchers working on operando and in-situ methods and related data analysis and computationally aided optimisation approaches. We welcome you to join the event in person or to participate online.