Nature and EnvironmentGlobal issuesEnergetic building facadesTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and EnvironmentGlobal issues02/24/2021February 24, 2021Building facades get lots of sunlight which German researchers want to harvest as solar energy – without photovoltaic panels. Instead a layer of solar cells on the bare concrete will soon provide sustainable electricity.https://p.dw.com/p/3fPijAdvertisement