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					Originally Posted by haertig  I would take whatever specs the solar panel quotes and reduce those to 1/4 to maybe get a more realistic picture of what you could actually expect out of them in real world conditions. | 
	
 Or 1/10th for the "dark half of the year" at 1/2 way between Arctics and tropics. OTOH for 3 months we have much more daylight than the tropics in Ireland. Iceland, Greenland, Scandinavia even more so!