Tidal energy has a low-frequency intermittent behavior and its predictability is guaranteed because it is related to astronomical phenomena. The North and Northeast regions have the largest tidal ranges on the Brazilian coast, ranging from 6 to 10 meters. In this article, a comparative performance’s study of three configurations of a commercial hydrokinetic turbine, when subjected to the annual tidal profile observed in the Boqueirão Channel, using performance metrics based on the total energy production. The commercial turbine Tocardo T1, whose rotor diameter is 6.3 m, presented the highest productive energy in the area, since about 42% of the speeds are in a range close to its nominal speed.

This article analyzes the first results obtained from the energy prospecting of tidal currents and wind energy in the region of Ilha do Caranguejo, São Marcos Bay. Preliminary results indicate that this area has significant potential in terms of ocean energy. As for wind measurements, although partial, the indicators illustrate a significant potential above 100 m, suggesting initiatives for the data collection on a larger time scale.