e-fluxArchitectureSubscribeFive ElementsMatthias Schuler and Anja ThierfelderAnnual energy flow by solar radiation in kWh/m²a on urban surfaces. Behnisch Architekten with Transsolar, Dorotheen Quartier, 2017, Stuttgart. OvergrowthSeptember 2019Notes1➝.© 2019 e-flux and the author