William Janssen is the inventor and visionary behind Desolenator, a patented solar-powered desalination technology that provides clean water using only sunlight. With 25+ years of experience across design, business development, and impact entrepreneurship, he has led Desolenator from concept to global pilot deployments. Under his leadership, the company secured strategic partnerships with DEWA, Silal, and Booking.com, and was backed by MBRIF and Katapult Ocean. William holds multiple international patents in solar-thermal desalination and salinity gradient energy recovery. His work has been recognized by the Solar Impulse Foundation and Monaco Ocean Week. Prior to Desolenator, he scaled exhibition design firms in the UAE and Asia. William combines deep technical insight with storytelling and systems thinking. A passionate advocate for water equity, he frequently speaks at climate and innovation forums. He is based in the Netherlands and the UAE, leading Desolenator’s scale-up phase.