Ron, There is a simulation program called HOMER from NREL which is perfect for sizing off-grid solar PV battery systems and for calculating the savings by utilizing a small diesel generator. It will optimize the usage of the generator to minimize life cycle costs. You will need to know the load pattern on a 24 hour per day basis and can specify different patterns for weekdays and weekends. I have used HOMER for school PV battery systems in Haiti.
Contact me off-list if you have any questions. Lee On Sat, Apr 14, 2012 at 2:39 PM, Ron Young <[email protected]>wrote: > Thanks for the offer Chris & Dan, I'll contact you off list when I have > more info. By load profile or pattern I assume you & Maverick are simply > referring to the hourly energy use on a 24 hour basis - or weekly basis? I > know that there is no one at the sites that can provide that but maybe I'll > send them something like a TED or an Elite meter and get them to clip it on > to their genset output for a week then record the data and send it back. > > Ron > > On 2012-04-14, at 5:49 AM, Chris Mason wrote: > > Ron, > If you send me the load profile, insolation (or location), fuel price, > generator and PV equipment specifications, I will send you back an analysis > of the design options which will show the savings very clearly. It will > also tell you the duty cycle for the generator and the levelized cost of > energy for each scenario. This should help you to identify the right > combination of equipment and help close the deal. > > On Sat, Apr 14, 2012 at 12:17 AM, Ron Young <[email protected]>wrote: > >> Hi Wrenches, >> I'm putting together a proposal for a national company that has a few >> remote installations. They are looking for options for saving generator >> run-time using an inverter-charger/battery combo with the existing gensets. >> Does anyone have any real world examples of realized fuel savings in this >> type of scenario? They run generators 24/7 and a lot of the dusk to dawn >> energy requirement is well below the daytime needs. Appreciate any ideas or >> examples. >> >> Ron Young >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> 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 >> >> > > > -- > Chris Mason > President, Comet Systems Ltd > [email protected] > www.cometsystems.co > Cell: 264.235.5670 > Int: +1305.767.2094 > Skype: netconcepts > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > 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: [email protected] > > 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 > > > -- Lee Bristol NABCEP Certified Solar Designer/Installer Co-Founder & Commercial Channel Manager Standard Solar, Inc. 1355 Piccard Drive, #300 Rockville, MD 20850 (301) 944-5105 (240) 479-1510 (c) www.standardsolar.com
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