The thermal energy storage system aims to reduce peak load by shifting the peak load to off-peak hours. The results will be a reduction in pollutants in the air as fewer fuels will be burned and less need to build new power plants, meaning significant money savings. This report presents the progress made in designing a multi-stage energy storage system. A Currently, the system simulation has been carried out for the single and multi-stage and the expected PH diagrams have been obtained. From the simulation it is noticed that the COP of the system will increase with the increase in subcooling temperature and evaporator temperature. It was also noted that the COP of the system will decrease with increasing evaporator pressure, condenser temperature, and compression ratio. The COP of the different solutions was determined considering and without considering the pressure drops, heat losses and isentropic efficiency. Furthermore, the report illustrates the parts of the TES system and explains its operation and assembly. The system was tested and it was found that one of the capacitors is not working properly and needs to be replaced and for this reason no results have been obtained so far. Finally, the report outlines the steps to be followed in the next phases of the projectChapter 1: IntroductionBackgroundThermal Energy Storage is a technology for storing thermal energy that can be used at a later time. The reason for using such a system is to balance energy production and energy demand [1]. The types of thermal storage systems for cooling applications are latent heat thermal storage and sensible heat thermal storage.[2].TEST BenefitsThermal energy......at the heart of the paper. .....d the accumulation process in which the formed frozen clathrate is stored for later use. After the storage process, the discharge process is done by running the water in the tubes through the direct evaporator which will reduce the temperature of the water and can then be used for cooling. The project also aims to test both multi-stage and single-stage refrigeration cycles for the charging process to determine which is considered optimal for a TES system. Additionally, different types of refrigerants will be used to perform the charging process to determine the difference in operating parameters for each refrigerant and to ultimately reach the optimal refrigerant for that system. Furthermore, additives such as alcohol and salt will be added to the claterate to study the effect of the additives on the system performance and charging process.Works citatesyudent