Are There Special Considerations for Installing Solar in Snowy Areas?

Understanding Snow Load Requirements

When installing solar panels in snowy areas, it’s essential to consider the snow load requirements for your location. In the US, for example, the International Building Code (IBC) requires that solar panels be designed to withstand snow loads of at least 20 pounds per square foot (PSF). To achieve this, you may need to use a racking system that is specifically designed for high snow loads, such as a pole mount system with a minimum of 24" deep footings and 12" deep anchor bolts. This will help to ensure that your solar panel array can withstand the weight of heavy snowfall.

Selecting the Right Racking System

When selecting a racking system for a snowy area, look for systems that are specifically designed for high snow loads and can accommodate the weight of snow accumulation. A good racking system should have the following features: a minimum of 24" deep footings, 12" deep anchor bolts, and a design that allows snow to shed easily from the panels. For example, a solar ground mount pole with a height of 10’ or more above the ground can help to shed snow from the panels, reducing the risk of snow accumulation.

Panel Angle and Orientation Considerations

In addition to selecting the right racking system, it’s also essential to consider the panel angle and orientation when installing solar panels in a snowy area. A steeper angle (around 30-40°) can help to shed snow from the panels, but may reduce the overall energy output. A more shallow angle (around 10-20°) can reduce snow accumulation, but may increase the risk of snow accumulation in the winter months. It’s essential to consult with a solar panel installer who has experience designing and installing solar panel systems in snowy areas to determine the best panel angle and orientation for your specific location.