Incremental Conductance with Proportional-Integral (PI) Controlled Maximum Power Point Tracking (MPPT) in MATLAB is a technique employed to optimize the efficiency of photovoltaic (PV) systems. The incremental conductance algorithm continuously adjusts the operating point of the PV array to track the maximum power point, while the PI controller ensures stable and responsive control action. Implemented in MATLAB, this approach allows researchers and engineers to simulate and analyze the performance of the MPPT system under various operating conditions and environmental factors. By fine-tuning the parameters of the PI controller and evaluating its response alongside the incremental conductance algorithm, practitioners can design more robust and efficient MPPT solutions for PV systems, thereby maximizing energy extraction from solar resources.