February 26, 2025

Bifacial panels continue to generate excellent power during snowy winters. Here's how.

When people think of solar farms, they often picture arrays of panels stretching across deserts, far from civilization. It’s a common misconception that solar energy is only effective in hot, arid climates. In reality, temperature has little to do with solar panel efficiency, what matters most is sunlight. Many productive solar farms in the world operate in cooler regions, proving that solar power isn’t just for the desert.  

Sheep forage the uncovered ground beneath the panels at Apex Solar.

Take our Apex Solar project, a 105 MWDC solar farm near Dillon, Montana. Apex Solar experiences warm summers and snowy winters. With approximately 181 sunny days per year, the site generates reliable energy despite colder temperatures. In fact, solar panels often perform better in cool weather because excessive heat can slightly reduce their efficiency.  

But what happens when snow covers the panels? While heavy snowfall can temporarily limit production, solar panels naturally generate heat when absorbing sunlight, which helps melt the snow. Additionally, Apex Solar’s panels are mounted on a tracking system that tilts them toward the sun throughout the day. This movement helps snow slide off rather than accumulate.  

Another advantage at Apex Solar is the use of bifacial solar panels. These specialized modules don’t just capture sunlight from the front, they also absorb reflected light from the back. When snow blankets the ground, it acts as a natural reflector, bouncing even more sunlight onto the panels and boosting energy production. Rather than being a disadvantage, snowy conditions can enhance performance.

Apex Solar is just one example of how solar farms can thrive in a variety of climates. With advanced technology and thoughtful design, solar energy continues to prove itself as a reliable, renewable power source no matter the weather.