Crystal Energy revolutionizes windows by giving glass the functionality of generating electricity. Inspired by nature, the young deeptech startup from CNRS has developed a technology without critical materials or rare earths: a membrane of photosynthetic pigments, perfectly transparent between two glass plates, allowing electricity to be generated from light. This breakthrough technology is especially relevant when solar panels are less effective (when light is diffuse or shallow), and therefore targets regions where traditional silicon panels are less profitable, particularly in northern Europe.
Crystal Energy promises a return on investment on electricity bills estimated at 7 or 8 years for average sunlight in the Paris region. It is also a particularly relevant product for buildings near heritage sites where traditional solar panels are prohibited by French building architects, or for conservatories—a dynamic market, driven by high-end. According to co-founder Frédéric Sauvage, technical and scientific director of the startup and CNRS research director, Crystal Energy could target small screens as well: “we can imagine making all glass surfaces electrifying,” including smartwatches—the battery could be smaller, continuously charged, and less expensive.
Pioniq Technologies: a rechargeable micro-battery without critical materials
Founded by Jean-Marc Janailhac (71 years old) and Eric Fischmeister (66 years old), Pioniq Technologies raised 1 million euros to launch the company in July 2024, with the support of five business angels, including Marc Etienne, founder of the joiner FPEE (Art & Window). With two patents, a proof of concept, and “a lot of still-secret expertise,” Crystal Energy could also target small screens. The startup is raising 3.5 million euros today to continue developing its latest technological components before a planned commercialization at the end of 2026 or the beginning of 2027, with a profitability target by 2031.
Amount sought: 3.5 million euros
Contact: frederic.sauvage@crystal-energy.fr
