Solar Nerd articles about: Panel Technology

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Example of polycrystalline and monocrystalline solar panels.
Which type of solar panel is best: monocrystalline or polycrystalline?
When it comes to buying solar panels for your home, there isn’t a lot that obviously differentiates one solar panel from other. If you buy a car, there’s dozens, if not hundreds of different features, styles, and add-on options that you can take into account. But with a solar panel, there’s really only a handful of characteristics that make one product different from another. One of these is the type of material the individual solar cells are made of.
Diagram of a PERC solar cell
What is a PERC solar cell?
If you’re a homeowner who is comparing solar panels, there are really only a few features that obviously differentiate one panel from another, and efficiency tends to be one that manufacturers place front and center. Solar panel efficiency refers to how much light a solar panel converts into electricity. The higher the efficiency, the more electricity you’ll get from the panel for the same amount of light. For a rooftop deployment with limited space, this can be a very important feature.
Bifacial solar panels: a guide for homeowners
Normal solar panels generate electricity from sunlight that hits the front of the panel, but bifacial panels can use light that hits the back of the panel too. Bifacial panels do this by having a transparent layer at the back of the panel, where a standard panel would have an opaque backsheet. At the top of this article, you can see bifacial solar panels that are mounted on a carport. These panels are made by Lumos, a solar manufacturer based in Colorado, and are “glass-on-glass” panels that are constructed from two glass layers: one each at the front and back.