How to deal with limited space? Cities and municipalities need to prepare now for the consequences of climate change. Heat waves, for example, will increase in summer, putting a heavy strain on our circulatory systems, especially those of older people. Droughts, but also heavy rains, are expected to become more frequent and more severe. To counter this, planners are proposing measures such as green roofs, green facades and large-scale unsealing - a green city with fewer heat islands built of glass and concrete. On the other hand, buildings should not only be built and insulated in an energy-efficient way, but in the future they should cover an increasing part of their energy needs themselves. Photovoltaic systems offer a very efficient solution in this respect. Photovoltaic systems can be installed quite conventionally on roofs, but there are now many more options: facade modules are now on the market in many colors and variants that can be integrated into building facades and other surfaces. This allows a house to generate its own electricity in a climate-neutral way, often at a very reasonable price. But how well do photovoltaics fit in with green roofs and green facades? How can solutions be found to give both measures sufficient space in cities? Two experts from HZB (Dr. Björn Rau, photovoltaics, building-integrated photovoltaics) and DIFU (Dipl. Ing. Jens Hasse, adaptation to climate change impacts) explore where possible conflicts arise and discuss solutions in a lively conversation with moderator Nancy Fischer.

Editors of the episode: Antonia Rötger (HZB), Gregor Hofmann (WZB/BR50), and Anja Sommerfeld (FVB/BR50).