Weight plays a crucial factor when you plan on installing a solar panel on your roof!
After all, knowing its weight will help you ascertain whether or not your roof can support full installation. However, technologically-advanced panels tend to vary in both weight and size, making it challenging to find the ideal option for rooftops.
But you need not worry; we are here to address this concern once and for all.
How Much Does A Solar Panel Weigh?
Depending on the manufacturer and the technology used, solar panels weigh around 40 pounds on average. But they can also be as heavy as 50 pounds or more and as lightweight as 33 to 35 pounds. That’s the straightforward answer to this question.
Factors Contributing To The Weight Of A Solar Panel
If we only focus on the solar cells – the primary power generating components of the panel, the entire unit would weigh significantly less. But somehow, solar panels tend to weigh 2 to 4 pounds (approximately) for each square foot, based on their average dimensions of around 65 x 39 inches and 77 x 39 inches.
This is because the unit is basically an arrangement of solar cells placed between the glass, a Tedlar (Polyvinyl Fluoride) backsheet, and sheets of EVA or ethylene-vinyl acetate. As such, glass contributes to a significant portion of its weight, while its frame, being made of aluminum, constitutes another major part.
Even the EVA sheets and thin backsheets together add to the overall weight of the panel.
The Ideal Weight Of Rooftop Solar Panels
As we’ve mentioned earlier, weight is a crucial factor that should be considered during the rooftop installation of a solar panel. It doesn’t make a huge difference in ground-mounted systems, but the same can’t be said for rooftop systems.
Now, the most popular types of roofing are ceramic tiles, metal, and asphalt shingle roofs. They are designed to support solar panels, weighing 20 pounds or more per square foot, which means that they can easily sustain up to 4 pounds/square feet of rooftop solar panels.
However, old roofs tend to deteriorate in quality over time; as such, they are unable to support the same load. In such cases, you’ll have to consult roofing experts and solar panel installation services. They’ll advise you after analyzing the age and condition of your roof.
To sum up, it’s safe to say that solar panels weigh anywhere between 40 and 50 pounds. But as technology advances, manufacturers will be able to use the latest materials and techniques to make lighter panels for all types of roofing systems. We’d strongly suggest consulting experts in case you face trouble while finding the right solar panel for your roof.