Renewable energy systems play an important role in meeting the increasing global energy demand while reducing environmental pollution. Wind and wave energy are two promising renewable energy resources available in coastal areas. This paper presents an integrated wind and wave power generation system connected through a DC microgrid. The proposed system combines a wind turbine generator and a wave energy generator with energy storage using a bidirectional DC/DC converter. The generated power is delivered to the grid through a grid-connected inverter. The system is analyzed using simulation and experimental models to evaluate stability and power flow characteristics. Results show that the integrated renewable system maintains stable operation during load switching conditions and improves reliability of the power supply.