Hot spots, in the context of solar panels, refer to localized areas that experience unusually high temperatures compared to the rest of the panel's surface. These temperature variations can arise due to a range of factors, including partial shading, manufacturing defects, or imbalanced cell connections. While hot spots may seem like a minor issue, they can have a detrimental effect on the performance and longevity of solar panels.

Hot spots can also lead to a reduction in the overall output of the solar panel. Since electricity production is compromised in the affected regions, the panel's total energy generation decreases. In turn, this can impact the efficiency of the entire solar power system, causing a drop in energy yield and potentially affecting the overall financial returns of the investment in solar energy.

https://solartribe.com.ng/what-are-hot-spots-and-how-they-affect-solar-panels/