Synhelion, an ETH Zürich spin-off founded by Philipp Furler and Gianluca Ambrosetti, makes fuel from sunlight the hard, elegant way: concentrating solar heat to drive the thermochemistry that turns CO₂ and water into syngas, then into drop-in jet fuel, gasoline, and diesel. Using the sun as high-temperature process heat rather than just electricity sidesteps the efficiency losses of the electrolysis route — a genuinely different first-principles path to the same carbon-neutral barrel.
