The environmental administration is currently working on the municipal heating plan for Berlin, which has often been discussed in connection with the Building Energy Act (GEG). "By law, we as a municipality have to do it by 2027, but we are doing it by 2026 and are already at the table with all the protagonists," said Schreiner. In this context, there is a focus on deep geothermal energy. "This involves developing heat reserves at very great depths," the senator said. This form of heat supply is climate-neutral and secure in supply, she said. "It doesn't take up much space, which is particularly important in a city like Berlin, where we are struggling with the space issue anyway."