Quick Answer
Covering solar panels in heavy snow is typically not necessary, as most modern solar panels are designed to withstand snow loads and can produce electricity even when covered.
Understanding Snow Load Capacity
Most solar panels are designed to withstand snow loads without damage. The International Building Code (IBC) and the National Electric Code (NEC) specify that solar panels can support a minimum of 40 pounds per square foot (psf) of snow load. For example, a typical 60-cell solar panel measuring 39 inches by 65 inches has a surface area of approximately 2.5 square feet. This would translate to a snow load capacity of 100 pounds per panel. However, local building codes and manufacturer specifications should be consulted for specific requirements.
Clearing Snow Safely
If you still want to clear snow from your solar panels, make sure to do so safely. Use a soft-bristled brush or a specialized solar panel snow rake with a smooth, flat edge to avoid scratching the panels. Avoid using sharp objects, such as ice picks or shovels, which can damage the panels’ surface. Additionally, be cautious of slippery surfaces and consider enlisting help from a second person.
Alternatives to Clearing Snow
If you’re not comfortable clearing snow from your solar panels or if the snow load is too heavy, consider the following alternatives. Install a snow load calculator or consult with a local building expert to determine if your solar panels are at risk of damage from heavy snow. If so, consider installing a snow load mitigation system, such as a roof-mounted snow rake or a solar panel snow management system. These systems can help reduce snow accumulation on your solar panels and prevent damage.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.