The assumption is obvious and also corresponds to the facts. The white splendour affects the performance of photovoltaic systems as it blocks the sun’s rays on the photovoltaic modules. So they can absorb no or very little light, which means they produce less electricity. The risk of production downtime can be reduced if the following points are observed:
Snow affects performance Snow partially shields PV systems
Time to read3 min.
updated at06/10/2026
CategorySolar panels
Inclination angle of the modules
Photovoltaic systems are often installed at an optimal angle to the sun. This not only maximises the efficiency of power generation, but also facilitates snow slippage. In regions where regular snowfall is expected, the modules are often mounted at a steeper angle to promote self-cleaning by the snow.
Reflective effects
Interestingly, snow on the floor around photovoltaic systems can increase the amount of light reflected on the modules. This can lead to a slight increase in production as soon as the snow is cleared from the modules and forms a white carpet around the plant.
Automatic snow removal
Some plants are equipped with automatic snow removal systems that help keep the modules free of snow. These systems range from simple dozer skids to heating systems that melt the snow.
Temperature
Photovoltaic modules work more efficiently at cooler temperatures. While snow blocks sunlight, cooler temperatures in winter can cause modules that are not covered with snow to work more efficiently.
Maintenance and manual cleaning
In some cases, it may be necessary to manually clear the photovoltaic modules of snow to maximise power production. However, this should be done with care and safety considerations to avoid damage to the modules or personal injury.