Can solar street lamps work normally in rainy days?

Solar street lamp is a kind of lighting equipment that uses solar energy to generate electricity. It converts solar energy into electric energy through solar panels, and then stores it in batteries for night lighting. But in rainy weather, the work of solar street lamps may be affected to some extent.

First of all, the solar radiation received by solar panels will decrease in rainy weather, which will lead to the decrease of solar energy conversion efficiency. The working principle of solar panels is to convert solar energy into electric energy through photovoltaic effect. In rainy weather, the intensity of sunlight is weak, and the light energy received by solar panels will also decrease, thus affecting the conversion efficiency of solar energy. Therefore, in rainy weather, the power generation capacity of solar street lamps will be limited to some extent.

Secondly, the cleanliness of solar panels may be reduced in rainy weather. Impurities such as dust and dirt on the surface of solar panels will affect the absorption and conversion efficiency of solar energy. In rainy days, solar panels are easily washed away by rain, but at the same time they are easily polluted by dirt in rain, which leads to the decrease of the cleanliness of the solar panel surface. This will further affect the conversion efficiency of solar energy, thus affecting the normal work of solar street lamps.

But modern solar street lamps are usually equipped with battery energy storage system, which can store the electric energy converted by solar panels during the day and use it for night lighting. Therefore, in rainy days, even if the power generation capacity of solar panels is limited, solar street lamps can still work normally. When the night comes, the solar street lamp will automatically start and provide lighting through the electric energy stored in the battery.

Generally speaking, although the power generation capacity of solar street lamps may be limited in rainy weather, solar street lamps can still work normally because of the battery energy storage system. In addition, regular cleaning of solar panels is also an important measure to ensure the normal work of solar street lamps.