The Level of necessity and utilization Indonesian people's energy consumption is increasing. Indonesia is one of maritime country where several people have chosen to live in the coastal region. The coastal of Panimbang to Ujung Kulon, Banten, Indonesia have abundant of maritime renewable energy potential such as solar and wind. Potential study of maritime renewable energy in this location aims to predict the amount of electrical energy that can be generated by solar and wind. By designing Large Scale Floating Photovoltaic (LFPV) and Wind Turbine System (WT) with the capacity of 5.5 MWp and 1 MW respectively, are the way to take advantage of the available maritime renewable energy potential. This research, using survey method for obtaining the primary data and using the help of energy calculation software. Primary and secondary data from solar irradiation and wind velocity are used in this research to find out how much energy can be produced by hour and annually. HelioScope is used to calculate annual solar energy produced, meanwhile Homer software is used to find out total energy produced like solar, wind and the utility grid. The electrical energy generated by solar, and wind is 6.835 GWh/year (9.79%) and 0.567 GWh/year (0.812%) respectively, whereas electrical energy that supplied from the grid are 62.415 GWh/year (89.4%). Therefore, maritime renewable energy potential in the coastal of Panimbang to Ujung Kulon, Banten can be supply medium voltage utility grid as much as 7.402 GWh/year or 10.6% of the grid composition. Maritime Renewable Energy integration will have an impact on reduce CO2 emission up to 6,491.55-ton/year CO2. This research as a preliminary study to develop studies that will be carried out in the future at this location.