As a recent NASA report pointed out that the effects of human-caused global warming are happening now, are irreversible on the timescale of people alive today, and will worsen in the decades to come.[1] Hence, viable technologies of CO2 reduction, electrification of transportation, and large-scale deployment of renewable energy must be developed to offer sustainable and indispensable solutions to the global crisis. Some green technologies such as CO2 reduction, proton-exchange membrane fuel cells, and electrolyzers rely heavily on electrochemical catalysis, and thus catalysts play an increasingly crucial role in clean energy. Others like lithium-ion batteries heavily rely on high-performance electrode materials and high-safety electrolyte materials. Electrospinning has been widely applied in industry to produce large quantities of one-dimensional (1D) functional nanomaterials with good control over their diameter, porosity, structure, and compositions. In this talk, electrospun nanofiber-based materials with various compositions, hierarchical porosity, high surface area, and inherent one-dimensional shape will be introduced as promising candidates for catalysts and battery electrodes, as well as scaffolding support for ultrathin solid-state electrolytes. Perspectives on the potential of electrospinning-enabled materials for clean energy technologies will also be provided.