In MATLAB, modeling a grid-tied PV battery system involves creating a simulation environment that integrates photovoltaic (PV) panels, battery storage, grid connections, and power electronics. The model accounts for variations in solar irradiance, battery state-of-charge, grid voltage fluctuations, and power demand. MATLAB provides tools for designing the PV array, simulating solar energy generation, modeling battery behavior, implementing control strategies for grid interaction, and analyzing system performance. Engineers can optimize energy management algorithms, assess the impact of different system configurations on energy efficiency and grid stability, and evaluate the economic viability of grid-tied PV battery systems. By simulating various scenarios and optimizing system parameters, MATLAB facilitates the development of efficient and reliable grid-tied PV battery systems, enabling increased renewable energy integration and improved grid resiliency.