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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Folks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The new SAM (Solar Advisor Model) product from NREL is your answer.
I’m just learning about it, but it looks like it can do everything you need
related to analysis, and it is free. It uses TMY2 data sets that are hourly.
You can argue with the validity of the TMY2 data sets for your given area, but
they are used in all the best analysis software. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The only drawback to SAM is that it cannot do complex system designs
like PVSYST can. You can use the output of PVSYST as an input to the SAM model.
It is a very involved program, but it has to be to accurately model things like
TOU rates.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Bill.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Darryl
Thayer<br>
<b>Sent:</b> Tuesday, October 06, 2009 3:04 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] orientation data<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0>
<tr>
<td valign=top style='padding:0in 0in 0in 0in'>
<p class=MsoNormal>It used to be that Maui Solar could do it, my Maui is way
out of date, what is needed is a simulation solar calculator and a TOU
data set to drive with it<br>
Darryl<br>
<br>
--- On <b>Tue, 10/6/09, Mendocino Solar Service <i><msolar@mcn.org></i></b>
wrote:<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
From: Mendocino Solar Service <msolar@mcn.org><br>
Subject: Re: [RE-wrenches] orientation data<br>
To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org><br>
Date: Tuesday, October 6, 2009, 4:58 PM<o:p></o:p></p>
<div id=yiv43137491>
<p class=MsoNormal>I think what's needed is a way to analyze the financial
output related to orientation, not just kwh. Unlike with off-grid systems,
grid-tied is all about financial results. For a customer on TOU and net
metering, the time value of the kwh produced is quite important. A west
facing array will have peak performance in the afternoon when the system can
sell at the peak rate; even though it may produce fewer kwh overall, the
value of them is much higher. The CSI's EPBB calculator, flawed as it may be,
seems to take this into account when calculating the design factor on which
the rebate is based. Anyone using a program that can take time and pricing
into account too?<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'>Bruce Erickson<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'>Mendocino Solar Service<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'>707-937-1701<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'>707-937-1741 fax<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'>PO Box 1252<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'>Mendocino, CA 95460<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'> <o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'><br>
<img width=135 height=132 id=dbbcbf16-a5c8-403d-a3ff-b149a82e128c
src="cid:image001.jpg@01CA4697.63EFB3E0"></span><span style='font-size:10.5pt;
font-family:Papyrus;color:#F2962D'><br>
<span class=apple-style-span>"Serving the Solar System"</span></span><span
class=apple-style-span><o:p></o:p></span></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.5pt;font-family:"Palatino","serif";
color:black'><o:p> </o:p></span></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div>
<p class=MsoNormal>On Oct 6, 2009, at 10:53 AM, Ryan Mayfield wrote:<o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<div>
<div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'>Nik,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'>Check out this tool on Solmetric’s website:<span
class=apple-converted-space> </span><a
href="http://www.solmetric.com/annualinsolation-us.html" target="_blank">http://www.solmetric.com/annualinsolation-us.html</a></span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'>You can input your tilt and azimuth and it calculates the
percentage loss from the site’s ideal orientation.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'><br>
Ryan</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:#1F497D'> </span><o:p></o:p></p>
</div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span></span><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><a
href="/mc/compose?to=re-wrenches-bounces@lists.re-wrenches.org"
target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a><span
class=apple-converted-space> </span>[mailto:re-wrenches-bounces@lists.re-wrenches.org]<span
class=apple-converted-space> </span><b>On Behalf Of<span
class=apple-converted-space> </span></b>Nicholas Ponzio, Building Energy<br>
<b>Sent:</b><span class=apple-converted-space> </span>Tuesday, October
06, 2009 10:38 AM<br>
<b>To:</b><span class=apple-converted-space> </span>RE-wrenches<br>
<b>Subject:</b><span class=apple-converted-space> </span>[RE-wrenches]
orientation data</span><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Hey Folks,<o:p></o:p></p>
</div>
<div>
<div>
<p class=MsoNormal><br>
Anybody have real data to compare productions for south-facing vs,
west-facing PV array? PVWatts is only showing about a 7% derating for facing
west. <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal>Nik<o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
</div>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>No virus
found in this incoming message.<br>
Checked by AVG -<span class=apple-converted-space> </span><a
href="http://www.avg.com" target="_blank">www.avg.com</a><br>
Version: 8.5.238 / Virus Database: 270.14.3/2410 - Release Date: 10/02/09
18:24:00</span><o:p></o:p></p>
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