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<DIV><FONT size=2 face=Arial>Suntech 295's... Biggin!</FONT></DIV>
<DIV><FONT size=2 face=Arial>Thats about it!</FONT></DIV>
<DIV><FONT size=2 face=Arial>We did get some 72 cell mods from Oasis
Montana (dealer)</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>We are in the same boat. 14 years of off grid
installs!</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Jeremy</FONT></DIV>
<DIV><FONT size=2 face=Arial>All Solar</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=allan@positiveenergysolar.com
href="mailto:allan@positiveenergysolar.com">Allan Sindelar</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, January 24, 2013 12:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [RE-wrenches] 24V Module
Query</DIV>
<DIV><BR></DIV>Wrenches,<BR>We have years of installing 36-cell (12V) and
72-cell (24V) modules for battery-based customers. Most of our systems are 24V
or 48V nominal. Over the last few years, sources of conventionally-sized
72-cell modules have dried up - as cells have increased in size, most modules
and most newer factory production lines have either gone to 60-cell (20V)
modules, or 72 cells in 300+ watt ranges. It seems that the formerly common 72
cell, 24V modules in the 150-190 watt range, which are well-suited to
integrating into existing systems, are no longer available.<BR><BR>60-cell
modules in the common 220-250 watt range can't be added to an existing system
unless run through a dedicated MPPT charge controller that can convert
voltage, such as an FM, XW60, Classic or TriStar; the added cost of any of
these controllers cancels out the low prices of the modules.<BR><BR>Who
continues to manufacture 72-cell modules? Which distributors carry
them?<BR> I am aware of three options - are there
more?<BR> - Sunpower makes one module in the 245 watt range
that can be used negative ground, but it's very high efficiency (and with high
Voc/Vmp as well) and very pricey;<BR> - Sanyo/Panasonic has
225-240 watt modules, but also quite premium and pricey;<BR>
- Ameresco bought the rights to manufacture many former BP modules, and I
think they make some. But we had to replace lots of failed BP modules in that
size range, and are hesitant to use their technology, fearing that the
problems may persist in the continued line.<BR><BR>Thank you for any
discussion and recommendations.<BR>Allan<BR>
<DIV class=moz-signature>-- <BR><FONT
face="Times New Roman, Times, serif"><B>Allan Sindelar</B></FONT><BR><SMALL><A
href="mailto:Allan@positiveenergysolar.com"><FONT color=#000099
face="Times New Roman, Times, serif"><U>Allan@positiveenergysolar.com</U></FONT></A></SMALL><FONT
face="Times New Roman, Times, serif"><BR><SPAN style="FONT-SIZE: 10pt">NABCEP
Certified Photovoltaic Installer<BR>NABCEP Certified Technical Sales
Professional<BR>New Mexico EE98J Journeyman Electrician<BR>Founder and Chief
Technology Officer<BR><B>Positive Energy, Inc.</B><BR>3209 Richards Lane (note
new address)<BR>Santa Fe, New Mexico 87507<BR><B>505 424-1112</B><BR><A
href="http://www.positiveenergysolar.com/"
target=_blank><U>www.positiveenergysolar.com</U></A><O:P></O:P></SPAN></FONT>
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