Why Are Solar Panels Shiny?

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In summary, solar panels are often shiny because of the reflective materials used in their construction. This is especially noticeable in low-power panels for calculators or toys, but even high-grade panels for space can still reflect some light. Despite efforts to increase efficiency with anti-reflective coatings, solar panels are still only about 15% efficient and newer techniques are being developed to improve this.
  • #1
faitswulff
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I was just wondering why solar paneling is shiny. Doesn't that mean light is reflected and wasted?
 
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Yes - ideally it would be completely black.
In practice the glass top layer is reflective at low angles of incidence and the aluminium wires which carry the electricity away are also reflective.
You see this most in cheap low-power panels for calculators or toys, high grade panels eg. for space, are very black.
 
  • #3
Well, yes, solar panels are indeed inefficient although not for lack of trying. They are actually coated with some kind of anti reflective compound, but this compound still reflects back about 30% of the light incident on it. Overall solar panels are only about 15% efficient, although newer techniques are trying to make them more efficient.

http://http://www.popsci.com/environment/article/2008-02/eye-anti-reflective"
 
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1. How does solar paneling work?

Solar paneling works by converting sunlight into electricity through the use of photovoltaic cells. These cells are made of semiconducting materials that absorb photons from the sun, causing a flow of electrons and generating an electrical current.

2. Are solar panels reflective?

Yes, solar panels are reflective. They are designed to absorb and reflect sunlight in order to generate electricity. The reflective properties of solar panels help them to be more efficient and produce more energy.

3. Can solar panels cause glare?

Yes, solar panels can cause glare in certain conditions. However, most modern solar panels have anti-reflective coatings that reduce glare and make them more efficient. Additionally, the angle of installation and location of the panels can also minimize glare.

4. Is reflective solar paneling harmful to the environment?

No, reflective solar paneling is not harmful to the environment. In fact, solar energy is considered to be one of the cleanest and most sustainable sources of energy. The reflective properties of solar panels also help to reduce the amount of heat absorbed by buildings, reducing the need for air conditioning and saving energy.

5. Can reflective solar paneling cause damage to nearby plants or animals?

No, reflective solar paneling does not cause any harm to nearby plants or animals. The amount of light reflected by solar panels is not strong enough to cause any damage. In fact, solar panels can even provide shade for plants and help to reduce the urban heat island effect in cities.

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