Design as a boost for renewable energy

Dübendorf, St. Gallen und Thun, 22.09.2021 - Solar cells as design objects now adorn the façade above the main entrance to the NEST building of Empa and Eawag. The design is the result of an interdisciplinary competition organized by the Lucerne University of Applied Sciences and Arts (HSLU) together with Empa. The winning project installed at the NEST façade shows how photovoltaic modules can be visually integrated into buildings and improve architectural quality.

Building envelopes offer plenty of space for energy generation. However, photovoltaic façades are still rare – although technology and aesthetics can certainly be combined. Students and lecturers from the two HSLU departments Design & Art and Technology & Architecture have proven this by creating photovoltaic modules as design objects for the façade of NEST on the Empa campus. The designs were presented to a jury in February 2021. Now, the winning project "Glasklar" by textile design student Lynn Balli has been installed on the NEST building and put into operation. Björn Niesen, Innovation manager at NEST, is delighted with the result. "If we can arouse the interest of designers in the design of building-integrated photovoltaic modules, we will make an important contribution to greater acceptance of photovoltaic façades and thus promote the expansion of renewable electricity production in Switzerland," he says. - Integrating photovoltaic modules into their environment - A façade has to fulfill various functions. First of all, it protects the building – but it also has an aesthetic function. Unlike concrete or wood, which visually change and adapt to the façade over time, glass remains unchanged. The winning project "Glasklar" by Lynn Balli takes this into account. It ponders the question of how to make the material glass more attractive as a surface so that it does not look like a foreign object on – or within – the façade. Balli's design won over the jury in February 2021 with its elegant highlighting of the dynamics of glass and its successful implementation with ten individual panels. "A great learning for me was the realization that glass, due to its steady nature, offers a huge number of design possibilities that work well in the context of buildings. You just have to get involved in it", explains Lynn Balli.

Address for enquiries

Prof. Dr. Stephen Wittkopf
Lucerne University of Applied Sciences (HSLU)
Head of KIT (Knowledge and Innovation Transfer)
Phone +41 41 349 36 25

Björn Niesen
Innovation Manager NEST
Phone +41 58 765 42 62

Media contact:
Annina Schneider
Communication Empa
Tel. +41 58 765 41 07


Federal Laboratory for Materials Testing and Research