May 24, 2025 · This paper presents a comprehensive simulationbased design of a solar-powered energy storage system that employs a supercapacitor for rapid charge-discharge dynamics. Supercapacitors as energy storage could be selected for different applications by considering characteristics such as energy density, power density, Coulombic efficiency, charging and discharging duration cycle life, lifetime, operating temperature, environment friendliness, and cost. However,in small-scale grid systems,overcharging can become a significant concern even when using assembled supercapacitor blocks. Supercapacitors,in particular,show promise as a means to balance the demand for power and the fluctuations in.