SPR 220 Efficiency [RE-wrenches]

[solarpro at aol.com]

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Max wrote...

Anybody have hands on experience with Sunpower's SPR 220? The data sheet 
claims efficiency approaching 18% and conversion efficiency of 21.5%
Max Balchowsky



MAX.....


We have installed a great many 200's, and a few 215's.  Shall be installing 
our first 220 next week.  Everytime we fire up another SunPower system we are 
amazed at the output---consistently in line with ratings.  The modules even 
seem to be more forgiving as far as orientation.  When I first read the ratings, 
efficiency etc. I was extremely leery of the claims.  So we monitored the 
systems -- I now feel that SunPower's claims are justified.

But sometimes even 'conventional' poly peels my eyelids.  Yesterday I took 
readings on a just installed Sharp system - 24 Sharp 170's, PVP 5200, angle 22, 
south by southwest (210), 750 watts per meter, 84F ambient, 105F module... the 
inverter meter said 3550 watts.  Okay, so maybe the meter lied. But you 
shoulda seen the cyclometer.

Patrick A. Redgate
AMECO
Long Beach, CA
(562) 595-9570
www.amecosolar.com 

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