BIPV: What is Building-Integrated Photovoltaics, Advantages and Applications

The advantages of BIPV over traditional panels

Traditional photovoltaic systems have some limitations: they have only one energy function, their aesthetic impact is evident and they are installed retrospectively, overlapping existing structures. BIPV overcomes these constraints, offering both functional and architectural benefits.

Economic savings

BIPV modules can be designed from the construction phase, reducing the overall costs of the building: a single element replaces both the building material and the photovoltaic panel. For designers, this translates into simplified planning and a reduction in cost items: instead of computing cladding, support structure and photovoltaic module separately, everything is managed as a single element.

Alternatively, they can be installed during renovation, replacing obsolete components, thus transforming extraordinary maintenance expenditure into an investment with a measurable energy return.

Architectural integration and aesthetic harmony

Since BIPV modules are part of the building envelope, they guarantee visual continuity and architectural harmony. They are the ideal solution for contexts with landscape or architectural constraints, such as Italian historic centres, where traditional panels would be incompatible. Indeed, while traditional panels would alter the visual appearance of historic buildings, photovoltaic tiles "blend in" with them.

Therefore, for designers working on buildings subject to constraints, BIPV often represents the only viable way to integrate renewable energy without incurring authorisation rejections.

Multifunctionality

BIPV modules perform several functions simultaneously:

• Production of clean energy, even in non-optimal light conditions, allowing energy production to be optimised even in cases of shade or bad weather.
• Thermal and acoustic insulation, with direct benefits on winter energy consumption and residential comfort.
• Protection from atmospheric agents, as they also perform the function of an envelope, without the need for additional systems.

High energy performance

Advanced technologies such as Lumyra photovoltaic glass optimise production not only with direct sunlight, but also in diffuse and reflected light conditions. This means optimal and consistent performance even in winter months and in regions, such as northern Italy, with non-optimal solar irradiation.

Furthermore, according to a study by the IEA PVPS (Task 15 — Enabling Framework for the Acceleration of BIPV, 2020), in buildings completely clad with BIPV modules, it is possible to achieve energy self-sufficiency levels of up to 100% of total energy requirements.

Customisation

Lumyra Energy's BIPV glass offers extensive customisation possibilities to adapt to any architectural project:

• Variable transparency levels (0%–80%): ideal for continuous office facades or residential terrace parapets where solar control and privacy are fundamental.
• Various colours available to ensure uniformity with the facade and integration with the landscape context.
• Thickness adaptable to structural requirements.

Thanks to the wide range of available tones, each photovoltaic element is adapted to the project's style. In this way, parapets, roofings and continuous facades become distinctive elements of the building, capable of producing energy and, at the same time, enriching its aesthetics in a unique way.

Contrary to what one might think, the colour and level of transparency do not significantly influence energy production performance.

Comparison table between BIPV and traditional photovoltaics

BIPV and sustainability

BIPV directly contributes to four of the Sustainable Development Goals of the UN 2030 Agenda, namely:

• Clean and affordable energy (SDG 7)
• Innovation and sustainable infrastructure (SDG 9)
• Sustainable cities and communities (SDG 11)
• Responsible consumption (SDG 12)

The main strengths of BIPV from a sustainability perspective are:

• Recyclable materials: Glass is infinitely recyclable and durable over time.
• Reduced Energy Payback Time: between 0.8 and 2 years, compared to approximately 4 years for traditional systems. Therefore, BIPV modules recover the energy required for their production twice as quickly.
• Construction of Nearly Zero-Energy Buildings (nZEB): BIPV is fundamental for complying with Directive 2024/1275/EU (EPBD recast) on energy performance in construction, which requires that by 2030 new buildings in all EU member states be zero-emission.
• Reduction of materials: A single element performs both energy and architectural functions, limiting the use of separate resources.

Applications of BIPV modules

Unlike traditional photovoltaics, whose installation is mainly limited to roofs, BIPV modules can be applied in numerous contexts, from walkable floors to continuous facades.

Photovoltaic parapet

The transparent photovoltaic glass parapet is a perimeter protection element that integrates photovoltaic cells into structural glass, producing renewable energy without altering the building's aesthetics. It combines aesthetics, safety and sustainability and can be integrated into both existing and new-build structures. Main applications include residential and commercial buildings, public spaces and custom projects.

Lumyra Energy's parapet is available in various transparency gradations, from 0% to 80%, to adapt to different design and architectural requirements.

Photovoltaic floor

The photovoltaic floor is a cladding technology that integrates solar cells into high-resistance modules, certified anti-slip R11 on tempered glass, transforming passive surfaces such as terraces, courtyards and walkways into sources of clean energy. There are two variants:

• Walkable floor: ideal for penthouses, terraces and flat roofs.
• Drivable floor: designed for courtyards, car parks and open areas, resistant to heavy loads. It is particularly suitable for logistics structures, shopping centres and industrial complexes with extensive passive surfaces.

Continuous photovoltaic facade

The continuous photovoltaic facade is a cladding system that integrates BIPV modules into the vertical surfaces of buildings, combining the aesthetic and protective function with the energy function. They produce energy even with diffuse light, ensuring excellent performance even in winter and in bad weather.

It is therefore an element capable of significantly influencing the overall energy balance of the building. They are suitable for buildings with an extensive vertical surface, such as skyscrapers, offices, industrial structures and commercial buildings.

Ventilated photovoltaic facade

The ventilated photovoltaic facade is a BIPV system in which solar modules are anchored to the vertical wall of the building with an air gap between the panel and the support wall that promotes natural ventilation, reducing summer overheating and winter thermal losses.

It is the optimal solution for energy renovation: it clads existing walls, improving their aesthetics and energy efficiency as well as thermal and acoustic insulation, ensuring less heat loss in winter and less noise in interior spaces.

Available in semi-transparent or coloured glass, to meet every stylistic need, it captures both direct and diffuse light, guaranteeing optimal and consistent performance over time.

Photovoltaic roof tile

The photovoltaic roof tile is a roof cladding system made of tempered glass with a rough-textured surface finish that faithfully reproduces the appearance of a traditional roof tile. It thus combines the aesthetics and protective function of the traditional roof tile with energy production.

This system makes it possible to bring solar energy production even to buildings subject to architectural and landscape constraints, such as medieval villages and historic centres.

Conclusion

BIPV represents the natural evolution of photovoltaics towards true integration with architecture. BIPV modules are not simple solar panels: they are building elements in every respect, capable of generating clean energy, improving the energy performance of the building and respecting even the strictest landscape constraints.

With growing attention to sustainability, integrated photovoltaics is destined to become a standard in modern construction and in the renovation of existing building stock.

Are you considering BIPV for a project? Contact the Lumyra Energy team for personalised technical advice.

 Frequently Asked Questions (FAQs)