Project details



Energy harVesting by Invisible Solar IntegratiON in building skins

Start date: 01.10.2017

Duration: 54 months

Coordinator: TNO

Budget: 5.97 M€


The ENVISION project will demonstrate a full renovation concept that, for the first time, harvests energy from ALL building surfaces (transparent and opaque). ENVISION focusses on energy harvesting of the façade, and works by absorbing the invisible part of the solar radiation (the near-infrared (NIR) part, roughly 50% of the solar energy spectrum) allowing visible aspects to be retained. The ENVISION harvesting of solar energy is achieved via:

  • heat collecting non-transparent aesthetically pleasing façade elements by harvesting the NIR solar radiation,
  • heat harvesting ventilated glass by harvesting the NIR solar radiation,
  • electricity harvesting photovoltaic glazing solutions.

List of achievements

Useful documents and public deliverables available here.


Contact person: Bart Erich
Address: TNO
Tel: +31 (0)88 866 32 91