We do about 50/50 grid tie and off grid and from our experience I second Dana'a comment below about water cooled and particularly about low rpm.
Daryl DeJoy NABCEP Certified PV installer Penobscot Solar Design > I use Onan more than Kohler but water cooled and low RPM are > the ticket. > > > > Dana Orzel > > Great Solar Works, Inc > > E - d...@solarwork.com > > V - 970.626.5253 > > F - 970.626.4140 > > C - 970.209.4076 > > web - www.solarwork.com > > > > "Responsible Technologies for Responsible People since 1988" > > Do not ever believe anything, but seriously trust through > action. > > > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf > Of Randy Brooks > Sent: Monday, January 24, 2011 1:16 PM > To: Wrenches RE > Subject: [RE-wrenches] Generator for off grid > > > > Fellow Wrenches, > > > > What generator manufacturer are you currently recommending > for off grid use? A Kohler 18RES (LP, 3,600 rpm, air > cooled) a customer installed last year has already failed > after 370 hours of use during 6 months of construction and > winter occupancy. It consumed enough oil to cause the low > oil shutoff to activate, and the generator controller board > is fried. The owner is still negotiating with Kohler, but > Kohler has said they will not support any of their > generators used off grid. > > > > The owner is looking at a Cummins Onan 20 kW GGMA (LP, 1,800 > rpm, liquid cooled). > > > > Any suggestions would be appreciated. > > > > Thanks, > > > > Randy Brooks > > Brooks Solar, Inc. > > Solar Power for People > > 140 Columbia View > > Chelan, WA 98816 > > 509-682-9646 > > ra...@brookssolar.com > > www.BrooksSolar.com > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
