Is It Worth Installing Solar Panels In Areas With Heavy Snowfall?

Assessing Snow Load

When evaluating snow load, consider the area’s average annual snowfall, roof pitch, and gutter system design. In regions with heavy snowfall, aim for a roof pitch of at least 4:12 to ensure snow slides off easily. For example, a 1,000-square-foot roof with a 4:12 pitch can accommodate around 60 pounds per square foot of snow.

Choosing Snow-Resistant Solar Panels

To withstand heavy snow, select solar panels with a high UL 2703 rating, which indicates their ability to withstand snow loads of up to 240 pounds per square foot. Look for panels with a durable frame, reinforced mounting system, and a snow load calculation factor of at least 1.5. This ensures the panels can support the weight of snow without compromising their structural integrity.

Snow Removal and Maintenance

Implement a snow removal strategy, such as installing a heated roof or investing in a snow rake, to minimize downtime and optimize energy production. Regularly inspect and maintain the solar panel system to ensure snow is cleared and debris is removed. For example, a 4-kilowatt solar array with a 4:12 roof pitch can accumulate around 200 pounds of snow per panel, necessitating regular clearing to maintain optimal performance.