The Electrical Power System (EPS) is a power supply module designed for the Micro/Nano/Cube satellite platforms. The EPS derives its input power from two solar panels and consists of a solar panel interface,battery interface, battery charge/discharge regulator, voltage regulators and distribution electronics. The EPS generates power by means of solar cells and stores the energy in batteries, regulates the battery voltage and distributes it to the load. The main function of this EPS is to keep the satellite powered during the eclipse period and maintain the battery in charged condition during the sunlight period. It manages the load along with the Power Distribution Module(PDM) by powering ON/OFF the on-board electronic systems to avoid unnecessary power consumption during the satellite’s normal operation