I think that outback did some research on their system and they had about 2 to 
4% less power than a SMA system  I feel the reason for Bimodal is far more than 
2 to 4%
My 40 kW outback system has solar pyrometer and I have a method of comparing 
solar radiation to AC grid,  I also hve a method to look at intermediate steps, 
my anlaysis is that the modules are performing below, rating and I have had 
some module failures, but with 800 modules it is hard to find the bad actors.  
the system was installed in 2002 and 2003 january.  In 2007 I measured the 
solar to AC and got 63%  sorry I have not tracked it since then, other than the 
demand reduction for the facility,  The facility is office 9-5  or 8 to 4 or 
like that,  AC during the summewr is day time only, Every month of the year 
this system reduces demand.  
dt
 

________________________________
 From: "All Solar, Inc." <[email protected]>
To: 'RE-wrenches' <[email protected]> 
Sent: Tuesday, December 20, 2011 5:00 PM
Subject: [RE-wrenches] System Performance | Battery Based Grid Tie
 

  
Wrenches, 
I am looking for advice and or comments on system 
performance from a Grid Tied battery back up system. 
Is 65% efficiency fair as far as what goes back to 
the grid? 
Is PV watts a good tool for that. 
  
Commnets are welcome! 
  
Jeremy 
  
  
All Solar Inc.
Jeremy and Amy Rodriguez
1463 
M St
Penrose, CO 81240
www.asolarelectric.com
Phone 
719-372-3808
Fax 719-372-3804
Email [email protected]
Email [email protected] 
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