Recently, depending on PV systems has critical importance to surmounted the energy crunch in Egypt. The Ministry Of Electricity And Renewable Energy found the burden of electricity so tended to save energy in government building and begin the implementation of solar photovoltaic energy stations connected to grid on the roof of all electricity companies buildings. In this paper, a comparison has been made between Perturb and Observe (P&O) and Incremental Conductance (INC) methods of Maximum Power Point Tracking (MPPT) to achieve the highest efficiency and output power to a solar power station (40.18 kW) established on the roof of Upper Egypt Electricity Distribution Company (UEEDC) which has been selected as a case study. Moreover, a simulation has been developed under the influence of different solar radiation. All the simulation results has been developed using PSIM software packages.