Can Shading Become Energy? From Passive Facades to Productive Envelopes
Courtesy of Ehret
As the primary interface between interior spaces and the external environment, facades play a central role in both the performance and architectural expression of buildings. Increasingly, they are no longer seen as static envelopes, but as active mediators between climate, energy, use, and aesthetic. In dense urban contexts, however, they are also gaining relevance for another reason: while roof surfaces are often limited, fragmented, or already occupied by technical equipment, vertical envelopes remain largely underutilized in terms of energy production.





