The common misconception that solar panels are useless during winter is a myth that needs to be debunked. Energy experts agree that solar panels can still generate electricity in cold weather, despite the shorter days and cloud cover. The key factor is sunlight, not heat, and panels can run efficiently in cold temperatures. In fact, colder air can help the equipment run more efficiently than in peak summer heat.
The main reason for reduced output in winter is the shorter daylight and lower sun angle, not the cold temperature itself. This means that while the output may be lower, it’s not because the technology has stopped working. The question then becomes how much winter output is needed to still see savings on the electric bill.
Another concern is snow buildup on panels, but research has shown that snow often slides off panels quickly once the sun returns. The smooth and angled surface of panels allows snow to melt and slide off, rather than lingering for weeks. However, it’s essential to avoid trying to clear panels on a slippery roof, as it can be risky and potentially damage the panels.
Studies have attempted to quantify the impact of snow on energy output, and the results show that the design of the panel system, including the tilt and angle, plays a significant role in how quickly snow clears. The steeper the panel setup, the more likely snow is to move off sooner. Local weather data is also crucial in predicting snow losses, which can vary greatly from one location to another.
For those considering investing in solar panels, the cost can be a significant barrier. However, incentives and rebates are available, and EnergySage provides state-by-state information on these programs. The federal Residential Clean Energy Credit for home solar is also available, but it’s set to expire on December 31, 2025, which could impact payback calculations for new projects starting in 2026.
In conclusion, solar panels can still generate electricity in cold weather, and the winter output can be sufficient to see savings on the electric bill. While snow buildup can be a concern, it’s often not as significant as expected, and the design of the panel system can help mitigate its impact. With the right incentives and rebates, investing in solar panels can be a viable option for homeowners, even in areas with cold winters.