Portable Off-Grid Solar Power Generation System for Emergency Energy Supply

In remote areas and areas not covered by conventional power grids, access to stable electrical energy is a major challenge. Limited infrastructure and the high cost of electricity supply make alternative renewable energy sources, such as solar power, a promising option. However, the implementation of flexible and portable solar power systems for small-scale needs in these areas is still limited. Therefore, this study aims to design and develop a portable solar power generation system that can meet small-scale energy needs in off-grid locations. The system consists of a 120 $\mathbf{W}_{\mathrm{p}}$ photovoltaic (PV) module, a 10A solar charging regulator, a 12V 100Ah VRLA battery, and a 1200 W inverter, all of which are housed in a compact panel box with a metal base equipped with wheels for high mobility. Based on energy analysis, the system proved to be capable of meeting the daily energy demand of 0.1755 kWh. Performance tests show that the system can provide stable power despite fluctuating weather conditions. Effective management of the energy storage enables continuity of power supply despite a decrease in sunlight intensity. Nonetheless, there is potential to improve the energy conversion efficiency by adjusting the solar panel angle and adding PV capacity. This portable solar power system offers a sustainable, flexible, and practical solution to meet the energy needs of the community.