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<DIV><FONT face=Arial size=2>Off-grid wrenches,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Genset backup or PV and wind supplementing a genset
is cost-effective (except for its environmental impact). But what about
the time spent setting up the genset and fuel storage, and
maintenance, and repairs. A 2 to 6 kW PV system goes in pretty quickly, even
with batteries. If you add a 4 to 10 kW genset to the mix, what percent of the
job time does the genset take? How many hours are spent synchronizing the PV or
wind system to the genset? And how many hours a year is reasonable for
maintenance and repair? How many call-backs can you expect in the first 2 years?
Thank you very much for your insights.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Joel Davidson</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=jryago@netscape.com href="mailto:jryago@netscape.com">Jeff Yago</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> Tuesday, March 03, 2009 4:13
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] How large is
too large?</DIV>
<DIV><BR></DIV>
<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: Arial, sans-serif">
<DIV>I have designed and installed many off-grid systems and all but one
included a backup generator. The generator allows using a much
more realistic sized battery bank and the fast charging process reduces
generator run time.</DIV>
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