In MATLAB, a GWO (Grey Wolf Optimizer) optimized Load Frequency Control (LFC) controller can be designed for a hybrid Photovoltaic (PV), Wind, and Thermal Power system. The GWO algorithm, inspired by the hunting behavior of grey wolves, optimizes the controller parameters to ensure efficient power generation and load frequency regulation in the integrated renewable energy system. By leveraging MATLAB's computational capabilities, the GWO algorithm iteratively refines the controller settings to minimize frequency deviations and enhance system stability, thereby facilitating the seamless integration of renewable energy sources into the power grid while maintaining grid stability and reliability.