Abstract: This paper presents a genetic based method to design a PID controller for Automatic Voltage Regulator system. Many practical problems have objective functions that are non-differentiable, non-continuous, non-linear, noisy, flat, and multi-dimensional or have many local minima, constraints or stochasticity. The proposed algorithm is applied to those fields and the design of PID controller. The result from the algorithm shows the proposed method will able to give better performance and higher speed of convergence. Performance of our proposed algorithm is compared with other famous algorithms and the simulation results clearly indicate that our proposed approach is more efficient and improving the performance of an AVR system.