New start-up offers green hydrogen from just sun and water

Photreon, a start-up project at Karlsruhe Institute of Technology (KIT), aims to boost the hydrogen economy with mass-produced photoreactor panels that require no electrolyzers, consume no electricity, and do not need a grid connection. With the panels, hydrogen can be produced cost-effectively in a scalable manner from sunlight and water—suitable for both distributed applications and large-scale systems in sunny regions. During the Hannover Messe, April 20–24, 2026, photreon will be presenting at the KIT booth (Hall 11, Booth B06).