The work presented in this paper was aimed to investigate an indirect solar dryer, locally designed and constructed, In order to
adjust appropriate conditions for safe store of sliced potatoes. Throughout this study, by the mean of several experiments
performed at Ouargla City in southern Saharan of Algeria. We searched to improve the performance of our solar drying system. An
electrical resistance supplied by a variable number of photovoltaic panels was used to enhance the thermal efficiency. On the other
hand, we tried to follow the impact of various controlling factors of hybrid solar drying on the quality of dried potato slices. Our
present findings showed that the best operating conditions to ensure best efficiency, low duration time and higher product quality
were selected as follows: