<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'><P>Thanks Drake and others...</P>
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<P>I will ping SMA on this... and perhaps with utility "special case" approval a non-typical window could be allowed (with additional anti island logic switchgear)...</P>
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<P>keep on slingin panels everyone!<BR><BR>For a brighter energy future,<BR><BR>Geoff Greenfield<BR>President<BR>Third Sun Solar & Wind Power Ltd.<BR>340 West State Street, Unit 25<BR>Athens, OH 45701<BR><BR>740.597.3111 Fax 740.597.1548<BR>www.Third-Sun.com<BR><BR>Clean Energy - Expertly Installed<BR><BR><BR><BR><BR><BR><BR>----- "Drake Chamberlin" <drake.chamberlin@redwoodalliance.org> wrote: <BR>> This should be possible. I have discussed what it might take to set <BR>> up a system like that in the Gambia, with wind generators. It would <BR>> take a control system with differential current sensors and other <BR>> features. The UL 1741 specifications would probably need to be <BR>> opened up on multiple direct grid tie inverters. There would be a <BR>> practical limit on the percentage of feed to the generator mini grid.<BR>> This being said, I've not received much encouragement with this <BR>> idea. There are a lot of factors to consider.<BR>> At 09:35 AM 3/11/2009, you wrote:<BR>> >Undoubtably many of us are getting interesting project requests as <BR>> >folks want to sprinkle magic stimulus dust on things to make solar <BR>> >panels grow...<BR>> ><BR>> ><BR>> ><BR>> >We have a project with a huge electrical load, pumping water for a <BR>> >medium sized city. They want solar... great. Easy.<BR>> ><BR>> ><BR>> ><BR>> >They had a power outage and kept running with 2.6 MW of diesel <BR>> >generators. They are interested in solar's ability to do <BR>> >"backup". I don't think that many batteries will fit in my pickup <BR>> >truck, and I hate working with 300/0 wire.<BR>> ><BR>> ><BR>> ><BR>> >QUESTION: (and maybe its an easy one and the SMA guys will say, <BR>> >sure, we did that in Greece). Is it viable to set up a micro-grid <BR>> >in this scenario and run an island-mode, with available solar <BR>> >reducing the genny plant demand? Should I just say "forget it" or, <BR>> >at this MW scale, would the switchgear and effort be practical?<BR>> ><BR>> ><BR>> ><BR>> >Thanks.<BR>> ><BR>> >For a brighter energy future,<BR>> ><BR>> >Geoff Greenfield<BR>> >President<BR>> >Third Sun Solar & Wind Power Ltd.<BR>> >340 West State Street, Unit 25<BR>> >Athens, OH 45701<BR>> ><BR>> >740.597.3111 Fax 740.597.1548<BR>> >www.Third-Sun.com<BR>> ><BR>> >Clean Energy - Expertly Installed<BR>> ><BR>> ><BR>> >_______________________________________________<BR>> >List sponsored by Home Power magazine<BR>> ><BR>> >List Address: RE-wrenches@lists.re-wrenches.org<BR>> ><BR>> >Options & settings:<BR>> >http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<BR>> ><BR>> >List-Archive: <BR>> >http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<BR>> ><BR>> >List rules & etiquette:<BR>> >www.re-wrenches.org/etiquette.htm<BR>> ><BR>> >Check out participant bios:<BR>> >www.members.re-wrenches.org<BR>> Drake Chamberlin<BR>> Athens Electric<BR>> OH License 44810<BR>> CO License 3773<BR>> 740-448-7328<BR>> 740-856-9648 <BR>> _______________________________________________<BR>> List sponsored by Home Power magazine<BR>> List Address: RE-wrenches@lists.re-wrenches.org<BR>> Options & settings:<BR>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<BR>> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<BR>> List rules & etiquette:<BR>> www.re-wrenches.org/etiquette.htm<BR>> Check out participant bios:<BR>> www.members.re-wrenches.org</P></div></body></html>