There are several techniques for maximum power point tracking (MPPT) used in system PV. The P&O algorithm is one of widely used among them. However, this technique presents some drawbacks: it is strongly related to the characteristic of the power according to the tension of the photovoltaic generator (GPV) and it presents sometimes oscillations around the maximum power point (MPP). This paper deals with a new method for its optimization by using fuzzy logic. Simulations results show that the new proposal is easy to be implemented and leads to better performances.