Even in 2021, the buildings sector did not achieve the climate targets set. In 2020, it was the fourth largest emitter in Germany with 120 million tonnes of CO2. The need for renovation of the building stock is therefore enormous - but the potential is just as great. Only a strong focus on electrification and digitalisation in buildings will make them the hub of the energy transition. The course for a successful building transformation and thus the achievement of the climate targets by 2030 and 2045 will be set this year.