In Tulkarm city a stable supply of electricity from the grid cannot be taken for granted. It is therefore important to investigate possibilities on how to improve the supply for areas of the society that suffers the most from these flaws. Power outage or power line disturbances have detrimental effect on the operation of critical loads like computer controlling important process or medical equipment. In these times, the education in Palestine has become electronic education due to Corona virus. Therefore, an alternative source must be provided that ensures the continuity of energy within the facilities.

The UPS (Uninterruptible Power Supply) technology has come far but has not yet become a common part in electric system for residential consumers in the region. Solar Power and UPS are two technologies that are growing rapidly. The demand for solar energy is mainly driven by the trend towards cheaper solar cells, making it economically profitable for a larger range of applications. It is in the topic of how to design a UPS system with solar power for the residential consumers that this thesis focuses on.

The study is divided into two parts. The first part is a computer simulation using MATLAB Simulink, which has an explorative method and aims to simulate a combined system before experimenting physically with it to ensure the correct functioning of the system. The second part consists of experiment on a physical prototype system based on basic UPS and solar power components.

The results from the prototype system show that adding solar power to an UPS system does not interfere with UPS functionality in any major way. The additional power station that the solar panels constitute can increase system performance during certain operational conditions.