It solves hydrogen’s storage and transport challenges by producing hydrogen on board from seawater via electrolysis, powered by renewables. This hydrogen is stored and used when solar and wind aren’t available. https://www.quora.com/What-do-you-think-of-the-Energy-Observer-the-solar-panel-covered-catamaran-that-produces-hydrogen-fuel-via-seawater-electrolysis/answer/Coherent-Market-Insights-1?ch=10&oid=1477743868977468&share=01d597da&srid=uTm6RG&target_type=answer