Shading is very often underestimated by designers and customers. A sufficiently large, unshaded area on the roof or on the ground is required for the full efficiency of a photovoltaic installation. Shading occurs when the panel or part of it is covered and the sun does not reach it.
It is worth believing in fees and charges during the day. We also encourage you to check the local land development plan. All the information that we find there will allow us to plan the assembly of an efficient photovoltaic installation.
We can distinguish two types of permanent and periodic shading.
- It is constant due to the projection of a shadow by objects such as chimneys, antennas, canopies, tall trees, etc.
- Periodic shading results from the momentary presence of leaves, snow, soot or dust.
- The effect is the same in both cases. There is a decrease in energy yield from the photovoltaic system. With some panels, the yield is almost zero.
Stray shadows have a less negative impact on the operation of a photovoltaic system. That is, those that fall from objects located far from the panels. In this case, the sun’s rays can penetrate and reach the modules.
In order to avoid undesirable consequences, the installation location should be considered at the design stage. More on this in our post How to plan the construction of a house taking into account the photovoltaic installation?
There is also another solution to the shading problem. HALF CUT panels.
- How do they work?
- What are they characterized by?
- How do they extend the life of a photovoltaic installation?
We answer these questions in our tab HALF CUT solar cells.