From August 28-30, the annual International Flow Battery Forum (IFBF) took place in Brussels, Belgium. SONAR was represented by several participants with posters and a presentation. Results from the SONAR project and standardization of redox flow batteries were reported. In addition, SONAR organized a joint workshop with its sister project COMPBAT on the topic of “Modeling and Simulation” before the actual program of the IFBF began. SONAR was further represented together with FLORES, the European network of EU projects on redox flow batteries, at a booth in the exhibitors’ area. Participants of the IFBF made extensive use of the opportunities to obtain information and to exchange experiences. This year, IFBF had nearly 300 participants from a variety of countries around the world.