This book was designed to propose a plan for a solar installation for the Gollis University. calculations of different components of solar PV system including solar panels, charge controller, batteries, inverter and so on. determining the total energy/power consumption at Gollis University Administration Block and the power consumption for each appliances were calculated. MATLAB/Simulink software was carried out the implementation of the work. The inverter play the role of interfacing between the PV panels and AC power grid/generator.