A significant increase in energy generation from renewable sources in the national territory is highlighted, reflecting a global trend. However, challenges persist due to the intermittent nature of these sources, demanding innovative approaches to ensure the stability and reliability of the energy system. In this context, this study proposes applying a methodology to the size associated with renewable energy plants, considering both financial and technical aspects. Thus, the study was conducted using the Levelized Cost of Energy (LCOE), in which two alternatives of photovoltaic systems associated with the Casa Nova A wind farm were analyzed: a fixed-structure solar system and another with a single-axis solar tracker structure, with different nominal powers, to find the system with the lowest cost of energy. Additionally, a complementarity study between energy resources was conducted, considering solar irradiation and wind speed, based on satellite data. The results showed weak complementarity between wind speed and irradiance in the region, reflected in energy loss values of 15.58% and 16.60% due to injection limitation for fixed-axis and single-axis solar tracker technologies, respectively. Finally, it was found that the 6 MW system with a solar tracker had the lowest LCOE among the simulated systems, at R$ 159.81/MWh. Thus, through LCOE, it was possible to identify the most viable system for association with the wind farm.
