On June 22 and 23, more than 5,000 tech experts came visited hub.berlin. The business festival, organized by Bitkom, brings together the various visions and competencies from the fields of business, science and politics. From digital sovereignty to innovation possibilities of quantum computers - the visitors could interact and exchange in various ways like presentations or workshops. We were there with our own booth, made new contacts and presented eight start-ups from our hubs. At our panel, Hanna Hennig from Siemens, Eric Weber from the Smart Infrastructure Hub Leipzig and Mirko Ross from Asvin talked about opportunities and possibilities of IoT, Smart City & Smart Building for the sustainable design of the energy transition.