SolarSlide: Energy-Generating Sliding Shutters

SolarSlide introduces a new approach to building-integrated solar design. Rather than adding photovoltaic panels on top of a facade, the system transforms the facade itself into an active energy surface. Developed by EHRET in collaboration with the Fraunhofer Institute for Solar Energy Systems ISE, the sliding shutters merge architectural freedom with decentralised power generation and effective solar control.

At the core of the system are coloured glass-glass photovoltaic modules that conceal their technical components entirely. No visible cell structures, no mechanical distractions: the shutters retain the clarity of a contemporary facade while providing the functional depth of a renewable-energy element. Whether used in new buildings or integrated into renovation projects, SolarSlide extends the palette of design tools available to architects who want to address energy, comfort and aesthetics jointly.

A facade element that produces electricity

While conventional shading systems only block or filter sunlight, SolarSlide adds a productive layer to the facade. The sliding shutters generate electricity whenever exposed to daylight and reduce the thermal load on interior spaces at the same time. This dual function supports both energy-efficient building standards and the ambitions of planners seeking to enhance on-site solar yield. Depending on project goals and installation strategy, the system can contribute to self-consumption, feed energy into the grid or help move a building towards plus-energy status.

Two system variants for different project scales

SolarSlide is available in two configurations. The SolarSlide system uses an integrated micro-inverter in each shutter, providing a plug-and-play solution with straightforward installation and a maximum feed-in of up to 800 W. It is particularly suited to smaller installations or decentralised arrangements.

For larger facades or projects with higher energy targets, SolarSlide Pro connects directly to building-side inverters and energy storage. This variant supports higher overall output and offers planners more flexibility when integrating PV production into wider electrical strategies. Both versions are available in dimensions of up to 1500 × 2800 mm per panel, making them suitable for a broad spectrum of facade geometries.

Colour as an architectural tool

A defining feature of SolarSlide is its coloured photovoltaic surface. The modules are available in eight standard tones – black, anthracite, grey, light grey, blue, green, terracotta and gold – and can also be produced in customised shades. This opens a qualitative shift in how solar facades can be composed: instead of treating photovoltaics as an add-on, the colour becomes part of the architectural language.

The surface finish can be satin, glossy or textured, each resulting in a different visual depth. With an optional interlayer, the shutters appear fully opaque, creating a uniform, sculptural facade expression. Without the interlayer, the modules allow partial transparency, bringing filtered daylight into interior spaces and supporting the design of lighter, more open environments.

Materials and durability

The shutters rely on ESG safety glass and powder-coated aluminium frames, ensuring longevity and minimal maintenance even in demanding weather conditions. The hardware is designed for high durability and consistent performance throughout the system’s lifecycle. Operation can be manual or motorised, and SolarSlide is compatible with common control technologies, allowing seamless integration into building automation.

Building integration and flexibility

SolarSlide can be installed in both new and existing structures without altering the architectural concept. The slim profile of the modules and the concealed technology mean that buildings retain their intended character while benefiting from additional functionality. For planners working with complex facades, adaptive shading strategies or projects subject to stringent sustainability frameworks, the system provides a tool that aligns energy production and design coherence.

Rethinking the role of the facade

As sustainability requirements shape contemporary planning, facades are increasingly expected to contribute to a building’s performance. SolarSlide positions itself within this shift by using previously unused vertical surfaces to generate energy without compromising architectural expression. With its coloured glass modules, concealed photovoltaic technology and wide size range, the system expands what shading elements can achieve.

By turning sunlight into electricity and facades into active components of the energy system, SolarSlide offers a refined and future-oriented solution for buildings that aim for both visual quality and measurable sustainability.

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