This article addresses the design problem of an aggressive load/frequency feedback controller against load disturbances for an electric power generation plant. The controller is comprised of two components. The primary aggressive component, whose design is based on LMI techniques, places the closed loop poles in a predefined region while providing fast attenuation and disturbance rejection. The resulting control action provides control commands with large amplitudes that trigger the plant's input saturator especially in case of large load disturbances. To account for this, an anti-windup compensator is provided assuring stability of the closed-lop system in all cases. The overall controller provides a fast response for small load disturbances and a rather conservative response owing to the anti-windup action for large loads. Simulation studies are offered to illustrate the efficiency of the control design.