PHYSEE has won the 14th edition of the KvK Innovation Top 100. The spin-off company from TU Delft that produces smart, energy-generating windows can call itself the most innovative SME in the country for a year. PHYSEE is based on TU Delft Campus.

The jury, led by innovator Ruud Koornstra, was unanimous. PHYSEE develops ‘breakthrough technology for the world’. “Every architect can easily apply it. PHYSEE stands for a future in which buildings become energy positive without compromising on the aesthetics of the facades. That makes this company a justified winner.”

Green energy

PHYSEE’s patented invention consists of solar cells in the glass that generate electricity and sensors that make the glass smart. The solar cells ensure that there is always green energy in the facade. The sensors measure environmental data such as temperature, light and air quality and use this information to cool, heat and illuminate buildings in a more energy-efficient way. Buildings thus become 25% more energy efficient and comfortable.


Where the glass industry was not interested at first, glass producers are now starting to show more and more interest. From a small start-up, PHYSEE has now become a scale-up with more than 30 employees from 10 countries.


TU Delft is a shareholder and partner in this company via Delft Enterprises. PHYSEE still collaborates intensively with the university. Click here to read how co-creation helped PHYSEE grow.