Photovoltaic tracking systems are mounted on mobile structures called trackers. The installation of photovoltaic modules in a tracking system can be divided into the following steps:

1. Making the foundation for the tracker column and installing it. The foundation seating depth depends on the specific site conditions. The foundation embedment depth must also be greater than the ground frost depth, which depends mainly on the climatic zone. Dimensions of the foundation are determined by the designers and Polish standards and are calculated in the case of photovoltaic panels for the third climate zone and made of concrete class 25. It is also possible to mount a photovoltaic installation on a supporting pole. This type of structure is offered by the company Solar Tracker Polska, of which the PV installation is presented in Fig. 1.

Figure 1: Tracker support structure located on a concrete support pole by Solar Tracker Polska. Photo used with permission of Solar Tracker Polska.

One construction solution is to install a so-called basket in the foundation, which is shown in Fig. 2 and Fig. 3, to which the tracker column is screwed. The column is made, for example, of ST3 S steel pipe 230 mm in diameter with a wall thickness of 6 mm and a height of 2 000 mm.

Figure 2: Construction basket for mounting the tracker support pole by Solar Tracker Polska. Photo used by permission of Solar Tracker Polska.

Figure 3: Foundation with placed basket for mounting the tracker support pole by Solar Tracker Polska. Photo used with permission of Solar Tracker Polska.

2. Installation of the support construction for photovoltaic modules is shown in Fig. 4.

Figure 4: Installed tracker support structure for photovoltaic modules by Solar Tracker Polska. Photo used by permission of Solar Tracker Polska.

3. Installation of PV modules to the support construction using sliding clamps and electrical installation ( Fig. 5 ).

Figure 5: Installation of photovoltaic modules – Solar Tracker Polska company. Photo used by permission of Solar Tracker Polska.