Solar evaporation is a sustainable pathway for diverse water treatment technologies. The contactless evaporation stands out for its superior anti-contamination property. However, the evaporation performance is significantly limited by the non-contact heat transport, which is more pronounced in scalable applications with suppressed vapor escaping and tilted solar irradiation. Here, we propose a high-performance contactless solar evaporation design with three-dimensional (3D) solar-heating and vapor-escaping structure. Our theoretical analysis reveals that mass transport is the true bottleneck of contactless solar evaporation in scalable application, and can be significantly improved by our 3D design. A laboratory solar evaporation rate of 1.03 kg m