Energy is the most important reason for global economic growth namely Required to support modern economic growth The economy depends on long-term access to energy from more reliable sources less cost, and less carbon dioxide emissions, and is environmentally friendly. The environmental concerns about power plants that run on fossil fuels and high fuel costs, pushing most countries of the world to research and develop renewable energy sources generating electricity using a renewable energy source are the only key to improving Energy efficiency energy quality issues, and sustainable energy savings. This goal can be achieved by installing small generators such as photovoltaic systems wind and fuel turbines Cells small turbines and generators of internal combustion engines Renewable energy in the world has many sources that are limited to two types, small and large-small uses of solar generators and wind turbines The large uses of aqueous biomass are geothermal solar energy and wind energy fuel cells. A 1 MW solar photovoltaic (PV) plant system has been installed at Diyala. This paper presents the design and performance analysis of this system using a PVsyst software package. The performance ratio and different losses that occurred in the system are also calculated. The average energy in the network is 1921 MW / H. Based on the simulation results developed in this paper, the practical PV grid-tied system has been implemented in the Diyala site