SOLINA - Growing Photovoltaics

What it does

The innovative technology and sculptural aesthetics create a new approach to energy generation through photovoltaics. The ‘growing’ and bifacial solar structure generates a large surface for electricity generation on a relatively small base area.

Your inspiration

Balcony solar devices play an important role in the energy transition and increase acceptance of renewable energies through participation. However, they do not blend in well aesthetically with the diverse architecture in the city. By focusing on beauty, this is set to change. SOLINA uses organic photovoltaics, which are already in use on a small scale today but are constantly being further developed. What is new is the growing form, which is inspired by art, design, and architecture, but the main inspiration comes from the wonders of nature. The function of the self-reinforcing structure is modeled on the growth of certain plants and fungi.

How it works

ASCA, the experts in organic photovoltaics, acted as advisors for the final thesis in the Product Design degree programme. The final prototypes for the thesis have so far been mock-ups. The advantages of ASCA's OPV technology are: Flexible, transparent, lightweight, coloured, suitable for indoor and outdoor use, good temperature behaviour, customisable, integrable, durable, low carbon impact, without rare earth elements and without toxins, re-usable, resource-efficient. But what really makes SOLINA special is the shape and principle of the growing surface. This growth causes the solar plastic films to undulate, thereby stiffening themselves. This is not only very material-efficient, but also offers a unique aesthetic.

Design process

In addition to the technology used, a decisive innovation factor is the extraordinary shape generation from flat PET films. The arrangement of the connections curves the films and stiffens the overall construction without the need for an additional support structure. The sculpture can be connected to the building frame using numerous connection points. The exact contour, graphic design, and shape and position of the connections between the final modules were developed during a lengthy design process. I was able to rely on technical advice from ASCA and other experts in the field of organic photovoltaics. However, it is difficult to predict how well the concept will perform in reality and in the long term. In addition to the modules, I have developed an electrical connector system that integrates perfectly visually. Conventional connector systems could also be used for functional prototypes. A frequently asked question concerns behavior during storms. The prototypes were therefore exposed to very strong winds for several days without suffering any damage. Should damage to the structure occur, the lightweight modules at least pose no danger to the surrounding area.

How it is different

Organic solar cells, and printed electronics in general, are not yet widely used. However, they offer enormous potential for highly efficient industrial manufacturing on a large scale. Organic solar cells are particularly advantageous for use in less optimally lit locations, such as balconies, as they achieve relatively better efficiency than crystalline solar cells in low light conditions. Their customizable shape and color allow them to blend in better with the architecture than the usual dark panels. The disadvantage of organic photovoltaics at the current stage of development is their lower efficiency, especially when compared to monocrystalline solar modules under optimal light conditions. This means that comparatively more space is required, which is not available on a balcony. The shape of SOLINA creates a large surface area on a small footprint, making it ideal for use on balconies or similar locations.

Future plans

So far, I have encountered a lot of enthusiasm and goodwill, but also a lot of skepticism about the usefulness of the project. However, ASCA sees no fundamental problems with its feasibility. What is missing at the moment is an investor or some kind of financial support to take the next step. Any public recognition, such as a design award, helps to convince potential investors. However, many of these awards focus on classic industrial design. With its focus on inventions and innovation, I think the James Dyson Award is the perfect platform for my idea.

Awards

Green Concept Design Finalist.