At present, we are more concerned about the environmental issues caused by the consumption of conventional energy sources. That"s why; we are focusing on the non-conventional energy sources like solar energy, wind energy, biomass energy, etc. to generate the required amount of electrical energy. Out of all the available energy resources solar energy is the most promising source of energy. But a photovoltaic system has two major drawbacks; the high installation cost and the low conversion efficiency of a PV system. To increase the efficiency of photovoltaic systems different types of MPPT techniques have been developed in past. In this paper we study and designed a PV system with incremental conductance (INC) based MPPT controller in SIMULINK. It also consists of a DC-DC converter. The implemented model extracts the maximum power from PV system and makes it available to the load hence it enhances the efficiency of the system.