Partial shading is a factor that influences the performance of PV module. The study sought to evaluate impact partial on module in Sudano-Sahelian climate conditions Cameroon. behavior was simulated using MATLAB/Simulink for 12 months with data from town Yagoua. power, current, and voltage losses were estimated by varying rate 5.0% 95.0%, an increase 5.0%. results show that, when ranges 55.0%, ...