We all know that solar panels generate electricity, but some other facts do not.

For example, so-called shading (a shadow cast by a cloud or tree, for example) causes a solar panel to lose power.

For the same reason, solar panels on the same inverter should always be oriented in the same direction. Therefore, if a solar panel is oriented differently and therefore generates a lower voltage, that solar panel with the lower voltage becomes a load and consumes the generated power from the other solar panels.

Solar panels generate direct current (DC) and not alternating current (AC). The amperage (A) of direct current is stronger than alternating current (AC), so solar panels use cables with a larger cross-section. However, it is also possible to calculate how large the cable cross-section should actually be.

If the cross-section of a very long cable from the solar panel to the inverter is too small, a voltage drop can also occur “on the way”, which ultimately leads to a drop in power – cable cross-sections that are too small can also lead to a cable fire!

The orientation of the solar panels to the south may not always be the best choice, in some cases (especially without feed-in tariff) it may be worthwhile to orient the solar panels e.g. to the southeast and southwest to produce more power in the morning and afternoon.

We will update this article shortly.