A factory in northern Europe is developing sheets with miniature solar cells that harvest energy from any light source, even candles, with the potential to transform everyday electronic devices.

Exeger's Powerfoyle can be seamlessly integrated into devices from headphones to tablets, eliminating the need for disposable batteries and cables.

In Stockholm, a factory in the far north produces blades with miniature solar cells that could change the way we interact with everyday technology. With the capacity to produce 2.5 million square meters of these cells each year, it is the largest plant of its type in Europe. Giovanni Fili and Henrik Lindström, co-founders of Exeger, have developed a technology that could do without conventional batteries.

These cells, known as Powerfoyle, can harvest energy from any light source, from direct sunlight to candlelight. Even under moonlight, even if the charge is limited.

Progress began with the discovery of dye-sensitized solar cells (DSSC) in 1988. Science developed at the University of California, Berkeley, allowed the commercialization of these cells.

Other products powered by this technology include headphones, bike helmets and wireless speakers. Nike, Phillips and 3M are among its clients, with talks also advanced with Logitech and Apple.

The first solar calculators appeared in the 1970s, but faced limitations due to their low energy consumption and fragility. Exeger's innovation solves these problems, making its panels flexible, resistant to partial shading, waterproof and durable.

Powerfoyle's durability and versatility allow it to be used under any lighting conditions. Although it limits its implementation in high-consumption devices such as laptops and smartphones, it can significantly extend the life of their batteries.

Anticipating an era where human activity will not depend on traditional batteries.