What Special Considerations Are There for Mounting Panels in Snowy Regions?

Choosing the Right Racking System

When selecting a racking system for snowy regions, look for systems designed with snow shedding in mind. Aluminum or stainless steel frames are ideal due to their corrosion resistance and strength. Consider systems with a high snow load rating, typically above 50 pounds per square foot (PSF). Some popular options include the IronRidge XR and the Unirac SolarMount, both of which are designed to handle heavy snow loads and withstand harsh winter conditions.

Optimal Tilt Angle and Orientation

The tilt angle and orientation of solar panels in snowy regions are critical for maximizing snow shedding and energy production. A tilt angle between 15-20 degrees is recommended, as this allows snow to slide off the panels more easily. It’s also essential to consider the south-facing orientation to maximize solar radiation. A slight adjustment in the panel’s orientation can make a significant difference in energy production during the winter months.

Additional Considerations

In addition to the racking system and tilt angle, consider the following factors when mounting solar panels in snowy regions: panel cleaning systems, such as heated rails or snow brushes, and ground clearance to prevent snow drift accumulation. Bifacial solar panels can also be beneficial in snowy regions, as they can harness reflected sunlight and increase energy production. However, ensure the bifacial panels are installed with a suitable backsheet and frame design to minimize energy loss.