Ron,<br><br>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.<br>
<br>Contact me off-list if you have any questions.<br><br>Lee<br><br><div class="gmail_quote">On Sat, Apr 14, 2012 at 2:39 PM, Ron Young <span dir="ltr"><<a href="mailto:solareagle@solareagle.com">solareagle@solareagle.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">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.<span class="HOEnZb"><font color="#888888"><div>
<br></div><div>Ron</div></font></span><div><div class="h5"><div><br><div><div>On 2012-04-14, at 5:49 AM, Chris Mason wrote:</div><br><blockquote type="cite">Ron,<div>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.<br>
<div><br><div class="gmail_quote">On Sat, Apr 14, 2012 at 12:17 AM, Ron Young <span dir="ltr"><<a href="mailto:solareagle@solareagle.com" target="_blank">solareagle@solareagle.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Wrenches,<br>
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.<br>
<br>
Ron Young<br>
_______________________________________________<br>
List sponsored by Home Power magazine<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Options & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out participant bios:<br>
<a href="http://www.members.re-wrenches.org/" target="_blank">www.members.re-wrenches.org</a><br>
<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br>Chris Mason<div>President, Comet Systems Ltd</div><div><a href="mailto:masonc@cometsystems.co" target="_blank">masonc@cometsystems.co</a></div><div><a href="http://www.cometsystems.co/" target="_blank">www.cometsystems.co</a></div>
<div>Cell: <a href="tel:264.235.5670" value="+12642355670" target="_blank">264.235.5670</a></div><div>Int: <a href="tel:%2B1305.767.2094" value="+13057672094" target="_blank">+1305.767.2094</a></div><div>Skype: netconcepts</div>
<br>
</div></div>
_______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br><br>
Options & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a><br><br>Check out participant bios:<br><a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a><br>
<br></blockquote></div><br></div></div></div></div><br>_______________________________________________<br>
List sponsored by Home Power magazine<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Options & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out participant bios:<br>
<a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a><br>
<br>
<br></blockquote></div><br><br clear="all"><br>-- <br>Lee Bristol<br>NABCEP Certified Solar Designer/Installer<br><br>Co-Founder & Commercial Channel Manager<br>Standard Solar, Inc.<br>1355 Piccard Drive, #300<br>Rockville, MD 20850<br>
(301) 944-5105<br>(240) 479-1510 (c)<br><a href="http://www.standardsolar.com" target="_blank">www.standardsolar.com</a><br>