BIPV Facade Design: Curtain Walls That Power Buildings

The Shift from Passive to Active Enclosures For most of the twentieth century, a building’s facade had one job: keep the weather out. Glass reflected sunlight. Steel mullions held the glass. Concrete slabs bore the load. The envelope was a boundary — a line between inside and outside — and that was enough. That definition is now obsolete. Net-zero carbon mandates are accelerating across every major construction market. In the United States, California’s Title 24 energy code and ASHRAE 90.1 have raised minimum envelope performance requirements with each revision cycle. In the United Kingdom, Part L of the Building Regulations now requires new commercial buildings to demonstrate a 27% reduction in carbon emissions compared to the […]