Photoelectric modules are installed on special constructions that ensure the optimal orientation of the modules with respect to the sun and secure traction in the installation places on different types of surfaces: the ground, roofs and vertical surfaces. To maximize the productivity of a solar power plant, the PV panels are placed at the optimal angle for the given location. At the same time, in the case of rooftop solar plants, it is necessary to take into account the aesthetic appearance of the building, preserving the facade appearance of the roof as much as possible. In the case of solar module constructions arranged in several rows, in addition to correctly orienting them and choosing the right angle of inclination, it is very important to choose the right distance between the rows so that the losses of electricity production are minimal due to the shadow caused by the panels.