PhotovoltaicGlass(BIPV)
Building-Integrated Photovoltaics. Active laminated glazing that replaces traditional cladding materials, integrating solar cells that capture solar energy while simultaneously modulating shading and light transmission.
The panel simultaneously acts as a passive solar shade and active generator. The cables (pigtail) are concealed within the curtain wall mullions.
BIPV is not a solar panel resting on the roof: it is the building itself. The architectural skin evolves: structural glass embeds silicon, transforming the building envelope from a passive shield into an invisible, integrated power station.
In the BIPV paradigm, the photovoltaic element replaces conventional building materials, performing all the functions of a normal infill panel: mechanical wind resistance, watertightness, acoustic insulation and solar control. The cells, encapsulated between two layers of EVA, capture photons generating direct current. The cost of the solar material is partly offset by the saving on the purchase of the traditional cladding.
Crystalline silicon (dark square cells) is completely opaque: transparency is achieved by spacing the cells apart to create a geometric pattern. Thin-film technologies (amorphous silicon or CIGS) instead allow a homogeneous semi-transparency similar to a heavily tinted glass.
Standards
European and international references applicable.
Physical properties
Usage environment
Unlike rooftop panels, BIPV modules conceal junction boxes along their edges. Cables (pigtails) run invisibly inside the aluminium curtain wall mullions and transoms. Use micro-inverters or power optimisers to manage irregular shading on urban facades.
Documented applications
TAV. DCurtain Wall (Spandrel)
Opaque BIPV panels replacing enamelled glass in the spandrel (blind) zones of curtain walls.
Roofs and Skylights
Structural skylights: spaced cells block zenithal radiation providing shade and calibrated natural light.
Active Solar Louvers
Fixed or motorised active glass louvre blades that track the solar arc to maximise electrical output.
Balcony Balustrades
Replacing residential balustrade safety glass to convert the facades of multi-storey buildings.
Photovoltaic Power (Wp/m2) vs Light Transmittance — more power = less light
TAV. EPower generated is inversely proportional to light transmitted. The architect calibrates cell density (Wp/m2) based on facade orientation and required interior illuminance. BIPV cost is offset by: 1) energy generation, 2) savings on traditional cladding, 3) solar gain reduction, 4) potential incentives.
Reference regulations
1 normInformational links to the regulatory framework. Always verify the current text on the official source.
Operational documents from this sheet
Specification clauses, site checklists and compliance dossiers generated from the graph — and kept in sync when a cited norm changes. Join the waiting list.
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