The electric power system plays a crucial role in the successful operation of CubeSats, miniature satellites that have revolutionized space exploration and research. Given their small size and limited weight capacity, CubeSats demand efficient and lightweight power solutions to support their mission objectives. The electric power system provides the necessary energy to run critical onboard instruments, communication systems, and data collection sensors, enabling various scientific and technological experiments in space. Additionally, the power system ensures the continuous functioning of the satellite, facilitating prolonged missions and enhancing the scope of data collection and transmission. Reliable and robust power management also contributes to Cubesats' ability to adapt to varying environmental conditions in space, ensuring optimal performance and achieving mission objectives. As the popularity of CubeSats grows and their applications diversify, advancements in electric power systems continue to be instrumental in pushing the boundaries of space research and fostering new opportunities for scientific discoveries and technological innovations.