This paper discusses the dynamic modeling and control conducted on a novel hybrid energy system comprising a fuel cell (FC), that can be viably integrated with several renewable energy sources of different natures such as solar and wave energy, with battery banks used as backup power sources for electric power production. Furthermore, it extracts the full potential of the three sources using a novel, fast, and highly accurate controller based on buck-boost technology that concurrently controls the maximum power of the energy conversion systems utilized. The battery bank will directly feed the system when there is a problem with one of the sources. These sources have different characteristics for testing the developed controller under different conditions and developing a reliable energy system. Wave energy is currently considered to be one of the most promising renewable sources. It has seen significant recent development to increase its efficiency by incorporating new technologies, such as Savonius turbines, which had previously been used to generate wind energy. For the present study, a two-stage Savonius rotor was used in the wave generator. The simulation model of the entire hybrid power system was produced using MATLAB/Simulink and experimentally verified in a remote area under different weather conditions. The controller was successful in keeping the voltage of the hybrid system constant at 11.8 V near the desired value of 12 V, with an efficiency of 98%.