The figure below shows the schematic diagram used to calculate the row spacing and the formula for the calculation:. The figure below shows the schematic diagram used to calculate the row spacing and the formula for the calculation:. Photovoltaic (PV) systems (or PV systems) convert sunlight into electricity using semiconductor materials. A photovoltaic system does not need bright sunlight in order to operate. It can also generate electricity on cloudy and rainy days from reflected sunlight. PV systems can be designed as. . Hence in the following, we will see briefly the planning, designing, and installation of a standalone PV system for electricity generation. Empower your solar planning or education with SolarPlanSets Whether you here as a student learning about solar or someone just brushing up their knowledge, here are 59 of the most used. . For this purpose, the distances of the rows from each other are determined using the calculations for the angle of incidence of solar radiation for December 23, when the sun is lowest above the horizon. The selection of this distance is closely related to our geographical location, as well as the. . TC is time correction factor to correct for longitude position within the actual time zone. The 4 in the equation is because the earth revolves through 10 every 4 minutes This was used to determine the angle above the horizon of the sun.