How efficient are solar panels? and by what percent?
by 
Ian is making rounds
ANSWERS: 2
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The best efficiency by far is achieved by plants during photosynthesis (usually 70-90%). I think that currently the best efficiency achieved by solar panels is somewhere around 30-40%, cheaper versions usually reach only about 15%.
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My friend had a few installed and they love them and want more and think they are the way to go. There plac was nice and warm.
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