<![CDATA[The intermittency of renewable energy, especially solar and wind power, is a major challenge in maintaining the stability of modern electric power systems, especially in the parameters of frequency, voltage, and supply continuity. This study analyzes the integration of Hydrogen Energy Storage System (HESS) in a solar–wind hybrid microgrid in the southern coastal region of West Java which has characteristics of solar radiation variability and high wind speed. The methods used include dynamic modeling based on nonlinear differential systems for electrolyser components, pressurized hydrogen storage tanks, and fuel cells, as well as stability analysis using a small-signal approach and MATLAB/Simulink-based transient simulation. The results showed that HESS integration was able to significantly reduce power fluctuations by about 40 percent and improve system frequency stability compared to systems without storage. The implementation of a control strategy based on a predictive control model has also been proven to improve the efficiency of energy distribution and system response to changes in load and energy source. Analysis of thermodynamics and fluid mechanics in hydrogen compression processes shows that storage pressures in the mid-range of 30 to 50 bar provide a balance between efficiency and system safety. The study confirms that hydrogen storage technology is an effective solution to improve the stability and flexibility of intermittent renewable energy systems, as well as support the development of sustainable energy systems in regions with high renewable energy penetration]]>
