This paper deals with the various methods for reduce the load frequency control (LFC) issues in an interconnected power system under deregulated environment. The effect of inclusion of doubly fed induction generators (DFIG) in both control area for load frequency control applications in a deregulated power system. For analyzing the load flowing application, the test system consists of a two area interconnected power system under deregulated environment having to GENCOs and two DISCOs in each area. To minimize the objective function, PID controller parameters are tuned by using Genetic Algorithm (GA). Simulations results under Matlab/Simulink environment validates that inclusion DFIG unit effectively it improve the LFC application for different contract scenarios under deregulated power system. © 2006-2015 Asian Research Publishing Network (ARPN).