BIPV, Building Integrated Photovoltaics, designates the aesthetic and technical integration of photovoltaic production within the facade (not bolted onto it), transforming the passive envelope into a productive asset. Our missions cover integration of silicon cells (mono and poly), CIGS, CdTe, OPV, semi-transparent cells and perovskites; active thermal management by double-skin and piloted inertia; electrical dimensioning and energy business case; alignment with EU Taxonomy, MoPEC, RE2020, LEED and BREEAM.
PL.026 · BIPVThree registers compose a BIPV mission: photovoltaic technology (cells, modules), architectural integration types (facade, balcony, railing, pergola), and active thermal management that extends performance beyond pure electrical generation.
FIG. 01 · CellMonocrystalline and polycrystalline silicon, laminated integration.
Monocrystalline silicon: high efficiency (eighteen to twenty-two percent), dark blue or black colour. Polycrystalline silicon: standard efficiency (fifteen to eighteen percent), mosaic appearance. Integration in laminated glazing, cells sandwiched between two glass layers.
CIGS, CdTe, OPV: homogeneous aspects, open palettes.
CIGS (Copper Indium Gallium Selenide): dark homogeneous appearance, coherent aesthetic integration. CdTe (Cadmium Telluride): stable performance, controlled cost. OPV (Organic Photovoltaics): flexibility, semi-transparency, colour palette.
Explicit trade-off between transparency and production.
Thin cells allowing partial vision through the glazing. Functional screen-printing combining decorative and photovoltaic functions. Explicit trade-off between transparency and production.
Perovskites, tandems, integrated solar concentration.
Perovskites (strongly rising efficiency, durability questions to instruct). Tandem cells: record combined efficiency. Integrated solar concentration.
Seven architectural integration contexts cover nearly all BIPV projects.
Vertical facades: curtain wall with integrated photovoltaic panels. Opaque photovoltaic facades: cladding of solid walls. Semi-transparent glazing: glazed balcony with production and partial vision. Railings and guardrails: production on horizontal elements. Pergolas and canopies: combination of shade and production. Roofs (boundary between BIPV and BAPV, Building Added PV). Photovoltaic membranes for textile structures, see Textile membrane structures.
Beyond pure photovoltaics, the generative envelope can integrate thermal recovery in double-skin facades (heated air between the two skins recovered for heating), night ventilation (thermal discharge for passive cooling), piloted thermal inertia (phase-change materials integrated in profiles), solar thermal capture via integrated vacuum tubes or flat collectors.
Five configurations regularly mobilise a BIPV strategy. They differ by their energy profile, patrimonial constraints and ESG sensitivity.
Strong ESG positioning, important energy usage.
Rapid BIPV profitability on own-consumption: data centres, IT, long-duration cooling.
Rising regulatory obligations.
Mandatory solar on certain new buildings in several European countries and Swiss cantons (MoPEC, RE2020).
Massive surfaces, substantial potential.
Patrimonial valuation through EU Taxonomy and energy certifications. Production on gable walls integrated to tenant strategy.
Discrete tints and semi-transparent glazing.
Allow adding production to historic buildings without denaturing listed architecture. Heritage commission approach.
BIPV often a necessary condition.
On-site renewable production offsets a share of operational consumption over the annual cycle.
Three contributions distinguish our BIPV practice. They verify on every mission: architectural integration, performance engineering, total cost optimisation.
Poorly designed BIPV gives facades a technical and dated appearance.
Our role is to preserve architectural intent: colours, proportions, reflectivity compatible with the design. Hide cabling and inverters in profiles. Unify appearance, no patchwork look between PV and non-PV zones. Integrate from sketch phase, not late when aesthetic integration becomes impossible.
From yield calculation to techno-economic analysis.
Annual energy yield calculation per orientation and tilt. Shading modelling: neighbouring buildings, vegetation, local topography. Inverter and battery sizing when storage is planned. Grid integration: self-consumption, feed-in tariff, collective self-consumption per jurisdiction. Techno-economic analysis with detailed ROI per scenario.
BIPV often perceived as expensive because compared to standard glazing.
The fair comparison integrates three factors: BIPV replaces part of the standard facade (avoided cost), produces energy for twenty-five to thirty-five years (revenue or saving), values the asset via energy label and tenant attractiveness. Well designed, the BIPV additional cost versus standard facade typically pays back in eight to fifteen years.
Three elements structure our BIPV practice: direct knowledge of European manufacturers, strict technological neutrality, native computational practice.
No partnership with a BIPV manufacturer.
Selection per project among European and Asian actors, on performance, industrial durability and total cost of ownership criteria.
Simultaneous optimisation of yield + aesthetic integration.
Allows simultaneous optimisation of solar gains (by orientation, tilt, shading) and aesthetic integration (composition, colours, transparency) at every design iteration.
BIPV is rarely calculated in isolation. Three canonical articulations pull it toward other expertises of the atelier.
BIPV reduces operational emissions over 25-30 years.
Substantially positive balance despite cell manufacturing footprint. Project-by-project parametric LCA.
Powerful combination: electrochromic (gain control) + BIPV (production).
Intelligent and generative facade. BMS-integrated piloting for global optimisation.
Circularity applies to PV panels.
Certain manufacturers reclaim their panels at end of life for material recycling and silicon recovery.
Seven international and national references structure the feasibility analysis of a BIPV project. Each opens up bonifications, thresholds or subsidies to integrate into the business case.
EU Taxonomy: alignment criteria for sustainable assets (BIPV accelerates alignment). RE2020 (France): carbon and energy thresholds favourable to BIPV. MoPEC / CECB / Minergie-P-ECO (Switzerland): enhanced labels with on-site energy production. LEED, BREEAM, WELL: substantial points for BIPV. Feed-in tariffs and subsidies: variable by country and region, to integrate into the project business case. See Standards & referentials.
Six pieces compose the deliverable package of a BIPV mission. They form a stand-alone dossier, exploitable by downstream packages (electrical engineer, cost manager, general contractor).
Solar potential study: per orientation, shading, expected yield by technology. Integration strategy: aesthetic, technical, economic. BIPV specifications: cells, glass, cabling, inverters. Integration drawings: positions, details, interfaces with electrical packages. Energy business case: production, savings, feed-in, ROI per scenario. Subsidy dossier: for programmes available in the jurisdiction.
Five canonical entries to calibrate a BIPV mission or combine it with other envelope registers.
Our eight state-of-the-art specialties on risk- or signature-grade typologies.
Parametric LCA, low-carbon sourcing, MoPEC/RE2020/EU Taxonomy compliance.
Dynamic facade: dynamic glass, BMS control, BACnet/KNX integration.
Design for disassembly, EPD, circularity: ISO 20887, Cradle to Cradle.
Free-form ETFE/PTFE/PVC: stadiums, atria, canopies.
Owner profile: value protection, asset engineering, independent audits.