Researchers at the Hanze University of Applied Sciences Groningen in the Netherlands have introduced an innovative system that combines hydrogen production and battery storage to store surplus renewable energy in off-grid households. The system, designed to utilize rooftop PV power or small wind turbines, aims to ensure stable operation by using battery storage when hydrogen generation is not immediately available. The system includes a 4.5 kW PEM hydrogen electrolysis system, a hydrogen storage tank, a purification unit, a hydrogen fuel cell, and a lithium-ion battery. Researchers highlighted the importance of drying and purifying the hydrogen generated via electrolysis before usage. Simulation studies conducted on a typical Dutch household showed that a hybrid approach using both solar and wind power was the most cost-effective. The analysis also indicated that optimizing the nominal power of the electrolyzer between 1,550 W and 2,000 W could significantly reduce system costs. Additionally, the optimal capacity of the battery was identified to be around 3 kW. The system's performance was simulated using Python software, showcasing the effectiveness of the proposed hybrid energy storage solution. Future research recommendations include testing the system on a larger scale or integrating heat production alongside electricity generation. The study, titled 'Simulation and analysis of hybrid hydrogen-battery renewable energy storage for off-electric-grid Dutch household system,' was published in the International Journal of Hydrogen Energy.