On the last weekend of the Climate Mile in Heidelberg, HEG took part in a very special campaign: During the balcony module screw challenge on October 5, 2024, passers-by were able to lend a hand and screw a solar module onto a balcony railing. This allowed us to show in a very practical way how easy it is to install a plug-in solar system on a balcony railing and invite people to get involved with the topic…