This paper proposes an electric power generation that is self-sufficient with the adopting of Hybrid Renewable Energy Sources (HRES) including solar and wind which in turn contributes a cleaner and sustainable environment. The proposed system provides uninterrupted power supply during any weather conditions and the excess energy is stored in battery which energizes the grid at times of deficit power supply from HRES. The incorporation of converter and control approach ensures the balanced flow of power in the grid connected system. A Single-Ended Primary Inductance-Converter (SEPIC) is employed in this work for the enhancing of voltage from the PhotoVoltaic (PV) system. An improved Grey Wolf Optimized (GWO) Proportional Integral (PI) controller facilitates the effective control of SEPIC thereby improving the transient response. A Doubly Fed Induction Generator (DFIG) based wind system is integrated as an alternate source with PI based control. The control of the battery is carried out by the Artificial Neural Network (ANN) and grid synchronization is accomplished with the aid of PI based dq theory. The simulation of the proposed work is carried out by Matlab and the proposed work generates improved outputs with efficiency 95.8% and a reduced THD of 1.3%.