Renewable energies, in addition to being inexhaustible, are among the clean energies and do not pollute the environment. Among renewable energies, solar energy is of special importance due to its extent and scope of application. In this article, the feasibility of building a photovoltaic power plant connected to the grid has been studied at the desired location, which selects the appropriate capacity and angle for the optimal use of solar power by the plant and reduces costs. Networking is very useful. In this paper, the feasibility study of a photovoltaic power plant with a capacity of 23.76 kW in Haftkol city, considering equipment, modules, power, voltage, inverter, optimal use of area and high reliability, has been designed using software. Land with an area of ​​144 square meters with an efficiency of 84.65% and 88 photovoltaic panels is considered and also the annual injection capacity to the network is 42350 MW. Manuscript profile

Iran is located between the orbits of 25 to 40 degrees north latitude and is located in a region that is among the highest in terms of solar energy among the parts of the world. The amount of solar radiation in Iran is estimated between 1800 to 2200 kWh per square meter per year, which is higher than the global average. In Iran, on average, more than 300 sunny days are reported annually, which is very significant. This energy can be used in different ways, such as electricity generation, heating and cooling, fresh water production, hot water supply, etc. In this paper, using T*SOL software, a solar heating system (including solar water heater, space heating) has been designed for laboratory complex No. 3 of Islamic Azad University, Ahvaz Branch and has been simulated for different time periods such as annually. Manuscript profile