The photovoltaic panels are yellow

Can discoloration damage a solar panel?

In some cases, severe discoloration could potentially indicate damage, although the presence of discoloration does not necessarily imply a solar panel defect. The most common defects in solar panels include issues such as hot spots, snail trails, and imperfections in the materials.

What causes PV module discoloration?

PV module discoloration can be caused by various factors, including: Exposure to UV Radiation: Over time, prolonged exposure to sunlight can cause degradation of the materials used in solar panels, leading to discoloration. This degradation can affect the appearance of the panels and reduce their efficiency.

Why do encapsulated modules turn yellow?

In the absence of a polymeric backsheet, this phenomenon is attributed to encapsulant degradation. This is confirmed by a thorough visual inspection that enables mapping of the occurrences of yellowing. The most affected is the EVA-UV encapsulated module, which tends to have a brown colour (Figure 2C).

What causes encapsulant polymer yellowing?

Encapsulant polymer yellowing, which can occur after long term exposure to UV light, 7 is the main topic of this article.