In this paper, the impact of renewable energy sources on a Two-area system is discussed. Also green hydrogen system GHS and electrical vehicle charging system EVC are integrated to the system as loads. Simulation is carried out by MATLAB SOFTWARE and results are introduced to show the improvement of the dynamic performance of Two-area system based integration of renewable energy sources to the electric network. As deduced from the simulation results, the combination of a PV, wind, fuel cell renewable energy sources introduce better improvement of the tested system in terms of voltage profile. The choice of using renewable energy resources RES instead of conventional sources is a suitable solution for environmental issues. PV, and wind energy systems are the most worldwide used renewable energy sources with hydropower energy. Also, fuel cell systems represent a clean source of energy. In terms of loads, hydrogen production system could be utilized as a storage fuel with RES . Electrical vehicles contribute to solve environmental problems over traditional vehicles. EVC stations are taken into account as a distributed load over electrical networks.