Do Solar Panels Help Keep Homes Cool?

When we design solar proposals, we use use historical data and finely tuned estimates to give you a solar proposal that you can trust. We want to make sure that the performance of your solar system meets or exceeds your expectations. But there’s one benefit that we can’t factor into a solar proposal, even though it can bring you real savings: solar panels can actually help keep your home cooler, in addition to producing clean energy. Here’s how:

Shade and Insulation

Solar panels act as a natural shield for your roof. By blocking direct sunlight, they reduce the amount of heat absorbed by your roof and transferred into your attic. This shading effect can significantly lower attic temperatures, which in turn helps keep the rest of your home cooler. It’s like having a permanent shade umbrella for your roof. If your solar project will cover the majority of your roof, you can expect more dramatic cooling of the attic than on projects where the solar panels only cover a small portion.

I’ve experienced firsthand how much solar can cool a workspace. When I was starting in solar, I worked in a commercial building with no insulation, and a metal roof. Summers were like sauna, and if you didn’t have the bay doors open, you couldn’t work there for more than an hour or two. Once we covered the roof with solar panels, there was a dramatic drop in temperature, making the workspace significantly cooler, and allowing us to work more comfortably, even in the middle of summer.

Solar panels block direct sunlight from hitting the roof and heating up the shingles. There is about a 4″ space between the solar panels and the roof, allowing the heat to disperse, instead of being transferred to the attic.

Reduced Air Conditioning Costs

With a cooler attic and overall lower indoor temperatures, you’ll likely rely less on your air conditioner . This translates to lower energy consumption and, ultimately, reduced electricity bills (getting a smart thermostat and modern heat-pump can help with this too!) Over time, these savings can add up, making solar panels an even more attractive investment.

Year-Round Temperature Regulation

While the cooling effect is most noticeable in hot summer months, solar panels offer benefits throughout the year. In winter, the insulation provided by the panels can help retain heat, reducing the need for excessive heating. This temperature-regulating effect contributes to a more comfortable living environment and further energy savings.

The Bottom Line

Solar panels are an incredible source of clean energy and a solid investment; for some homes they can also reduce the cooling load, and make the home more comfortable. By providing shade, reducing air conditioning needs, and providing clean energy, solar panels contribute to a more comfortable and energy-efficient home.