<p>The present investigation involves the synthesis of nano-structured rare earth-based orthoferrite NdFeO₃ using the sol–gel technique for energy storage applications. The room-temperature structure, morphology, and electrochemical properties were investigated via x-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical characterization. Crystallographic investigations confirmed the formation of a pure orthorhombic structure without any other unreacted secondary phases. The SEM images confirmed highly dense particles with size of 500&#xa0;nm and small pores on the surface. The electrochemical measurements carried out on the synthesized material indicated maximum specific capacitance of 94.2 F g⁻¹ at a current density of 1 A g⁻¹, with good cyclic stability. Energy density and power density of 3.27 Wh kg⁻¹ and 250 W kg⁻¹, respectively, were obtained for the active materials. Cyclic stability tests conducted over 10,000 cycles displayed 62% retention. Overall, these results highlight the electrochemical potential of NdFeO₃ nanoparticles as a cost-effective and stable electrode material for pseudocapacitive energy storage applications.</p>