  Energy is a necessity and the basis of human life. With the increase in the
need for energy supply in recent years, the use of fossil fuels has
intensified. Environment is a basic principle for human beings. In our dear
country Iran, with an average sundial of approximately 4.5 hours per day, there
is the highest potential for the use of photovoltaic systems. Connected to the
national power grid as a micro grid, in accordance with the standardization and
the highest efficiency with PVsyst software, the system losses were identified
and the necessary solutions were provided to solve them. In case of using 1 to
5 kW systems, which due to small It can be installed even on the roofs of
houses. In hot cities, where electricity consumption increases in the hot
seasons of the year, the pressure is removed from the national electricity
distribution network, and a significant amount of greenhouse gas emissions to
the environment is prevented. At the end by plotting the current value of the
project it was also proven to be economical.
