It doesn’t have to be completely sunny for your panels to produce electricity. In bad weather, your panel production won’t be 100%, but they will still be producing power. The exception is a snowstorm. If it snows enough for there to be a significant accumulation on your panels, no energy will be produced. However, snow slides easily off the panels, and panels are typically located where your roof gets the most exposure. Snow days will be factored into your system’s projected production. In Utah, there is an average of 5.26 daylight hours. This factors in snow and cloudy days. Solar panels can handle some pretty tough weather. Most solar panels are guaranteed to withstand hurricanes, and one-inch hail at 55 miles per hour. They are also built to withstand direct lightning strikes.
