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electrical:solar:panels

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electrical:solar:panels [2023/07/12 11:17]
frater_secessus [Solar panels] 		electrical:solar:panels [2023/09/05 21:45]
frater_secessus [efficiency]
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-===== Efficiency =====+===== efficiency ===== 
 + 
 +The formula for panel efficiency is simply rated watts / square meter.  A 20% efficient panel will make 200w per square meter under lab conditions (ie, 20% of the lab's 1000w standard). 
  
 Higher efficiency doesn't mean the panel makes more power;  it means it makes more power from a given area.  100w is 100w, but you might be able to fit a 110w panel high-efficiency panel in the same space as a regular-efficiency panel.  Higher efficiency doesn't mean the panel makes more power;  it means it makes more power from a given area.  100w is 100w, but you might be able to fit a 110w panel high-efficiency panel in the same space as a regular-efficiency panel. 
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 In general, mono has higher efficiency than poly, and poly has higher efficiency than thin film. In general, mono has higher efficiency than poly, and poly has higher efficiency than thin film.
  
-The cost of higher efficiency panels typically outstrips the increase power, so unless you are tight for space they typically aren't a good value for money.  If you are tight for space and need the power then pony up the cash and enjoy the premium product. +The cost of higher efficiency panels typically outstrips the increase power, so unless you are tight for space they typically aren't a good value for money.  If you are tight for space and need the power then higher efficiency panels might be worth the premium. 
 + 
 + 
 + 
 +===== longevity ===== 
 + 
 +Framed panels are often warranted to make 80% of their rated output for 25+ years.   
 + 
 +There is [[https://web.archive.org/web/20220703094223/https://www.sciencedirect.com/science/article/pii/S2211379716301280|some evidence]] that panels with a load connected degrade slower than those stored unconnected (open circuit) 
  
  
-> At zenith, sunlight provides an irradiance of just over 1 kilowatt per square meter at sea level. Of this energy, 527 watts is infrared radiation, **445 watts is visible light**, and 32 watts is ultraviolet radiation. -- [[https://en.wikipedia.org/wiki/Infrared|wikipedia]] 
  
-Mono panels can capture about 15-20% of this visible light energy.  Poly panels capture 13-16%, and film panels capture 9%. 
 ===== Specifications ===== ===== Specifications =====
  
electrical/solar/panels.txt · Last modified: 2024/01/04 16:54 by frater_secessus

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