Building-integrated photovoltaics (BIPV) replace conventional construction materials—spandrel glass, rainscreen cladding, standing-seam roofing, skylights—with active power-generating elements. Unlike rack-mounted arrays added after the fact, BIPV is part of the envelope, so the displaced material cost offsets a meaningful share of the system's balance-of-system (BOS) expense.
Yield engineering on non-optimal planes
A vertical south facade produces roughly 60-70% of the annual yield of an optimally tilted roof array, but it generates a flatter daily curve—stronger morning and afternoon output—which often aligns better with commercial load profiles and lowers the building's peak grid demand. We model irradiance per orientation, inter-shading from adjacent structures, and module temperature coefficients to forecast realistic annual kWh, not nameplate kWp.
Module technology is matched to the surface. Monocrystalline glass-glass laminates push facade power density toward 150 Wp/m² with -0.4%/year degradation; semi-transparent thin-film glazing trades some watts for daylighting and glare control in vision areas.
Thermal, structural & electrical integration
BIPV is a building-physics problem as much as an electrical one. Glass-glass laminates must satisfy structural glazing codes, wind and impact loading, and fire ratings, while ventilated cavities behind facade modules manage operating temperature to protect yield. We coordinate module-level power electronics so partial shading on a complex elevation never collapses a full string's output.
- Glass-glass laminate modules meeting structural and fire-rating codes
- Module-level power electronics for shade-tolerant string performance
- Semi-transparent glazing options balancing yield with daylighting
- Ventilated rainscreen detailing to manage module operating temperature
- REC generation and green-building credit documentation (LEED/BREEAM)
Economics & compliance value
The BIPV business case rests on two ledgers. First, avoided material: when PV cladding replaces a premium facade system, 20-30% of BOS cost is offset against the construction budget rather than added to it. Second, the energy ledger: on-site generation, renewable energy certificates (RECs), and contribution toward net-zero and energy-code targets that increasingly carry regulatory and asset-valuation weight.
We report net LCOE for the integrated system—after the material-displacement credit—which frequently beats grid-supplied power on architecturally significant facades, alongside lifecycle yield, degradation trajectory, and projected payback so the envelope is underwritten like any other capital asset.