The growth of urban population and the increasing demand for electricity to Brazilian consumers, especially in coastal areas, indicate the importance of the use of ocean energy for Brazil. In this scenario, this thesis investigates the wave energy potential on the south area of the city of Rio de Janeiro and its possible relation to sustainable planning of the coastal urban engineering. About 3.9 billion people (54 per cent of world population) live in urban areas. It is estimated that the growth of cities should result in an urban population of over 6.4 billion people by 2050, especially in the less developed areas, with poor urban planning and vulnerable to environmental risks (UN-Habitat, 2016). The urbanization of coastal areas in developing countries demands greater attention due to infrastructure needs and the necessary management to mitigate pressures of increasing human activities on the environment (Cicin-Sain and Knecht, 1998). This framework is particularly important for Brazil that has a high degree of urbanization with marked concentration of population in its coastline (IBGE, 2015) with urban interventions on ocean beaches through works poorly integrated into the city, neglecting nature s ability to claim the balance taken away from her. According to the report Act Now or Pay Later, made by the organization Christian Aid, the rapid growth of urban populations along the coastlines of the world and the growing threat of climate change display evidences that more than one billion people will be vulnerable to coastal flooding in 2060 (Doig and Ware, 2016), in cities exposed to rising sea level, which should increase for the next century in global average between 0.18 and 0.70 meters above the current level (IPCC, 2014).