Here, we address the abovementioned challenges and limitations in current solar-fuel systems by integrating two complementary solar technologies, namely a photocatalytic device for the green hydrogen production from water vapour and a SVG for clean water production. We introduce a hybrid photothermalphotocatalytic sheet (Fig. ), which integrates a photocatalyst (PC) powder on top of a SVG to give a single floating (SVG-PC) device. The resulting floating sheet utilizes the entire solar spectrum due to synergistic light absorption of ultraviolet (UV) light by the PC top layer and Vis-IR light by the SVG (Fig. ). Evaporation of the feedstock by the SVG supplies the PC layer with ample water vapour to generate hydrogen (H2) and oxygen (O2) without the use of sacrificial reagents. The remaining clean water vapour is condensed and collected. The concept of photothermal-photocatalysis has previously been explored in the context of solar vapour generation coupled with photocatalytic degradation of organic contaminants, but there are only few examples that demonstrate overall water splitting. Previous reports employed a design where the photocatalyst (solid) interacts with both water (liquid) to produce H 2 , O2 (gas), leading to stability issues especially when seawater is used. In contrast, our approach offers new insights into a unique design where the photocatalyst (solid) only interreacts with the water vapour, H2, and O2 (gas). This complete separation of the photocatalyst from the solution underneath offers a multitude of advantages, including improved stability and the inertness of the physically separated photocatalyst toward various dissolved substrates. The versatility of this design could allow for off-grid green energy and clean water production in regions facing water and land scarcity.