What happens to my solar panels when it snows?

Your solar panels will continue to produce energy, but their efficiency drops. However, winter months are the least productive time for solar as the sunlight is so low and short. Overall, losses in the snowy months are insignificant to the total annual energy production. If you’d like to increase efficiency in the winter or require winter power production (i.e. off-grid systems), the tilt of your panels and a cleaning system may be an option.