Nowadays, environmental problems due to existing power plants seem to acquire more attention around the world, because it increases continuously the earth temperature and warming. Nowadays, renewable energies, especially photovoltaic (PV) energy, considered as palliative energy resource, are growing rapidly and are used in several applications, e.g., battery charging, home energy supply, and pumping systems. However, they suffer from a relatively low conversion efficiency, which makes their optimization necessary. This is done by extracting their maximum power for uctuating climatic environments. An efficient ANFIS based tracking algorithm is proposed for PV applications under mismatching conditions. PV fed zeta converter is used to step-up the output voltage and track the maximum power efficiently. An ANFIS based MPPT algorithm takes minimum time to find the MPP when subjected to rapid change in irradiance. [ABSTRACT FROM AUTHOR]