Electrical energy has become human basic need in the world. A renewable energy research is quite crucial due to the fossil energy resource which is considered as nonrenewable energy. Hence, this paper will propose one of the solutions to solve this issue. The idea is ocean wave power generator that is constructed using the system of Oscillating Water Column (OWC) with piezoelectric as the essential component. It works by accumulating the energy from the ocean wave by giving the external force to the piezoelectric so that it will act as converter. This idea can be a potential solution for future development in renewable energy.