<div dir="ltr">Maybe I&#39;m a bit slow, but I don&#39;t understand this slide at all. This might make sense for expected momentary power output at a particular static sun position (perpendicular to the south panel face) under test conditions, but it doesn&#39;t relate to real world energy output with weather and sun position throughout each day relative to the panels. Can you explain further what this slide is intended to show?<div><div class="gmail_extra"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><span><br><div dir="ltr" style="margin-left:0pt"></div></span></div></div></div></div></div></div></div></div></div>
Jason</div><div class="gmail_extra"><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 28, 2015 at 11:03 AM,  <span dir="ltr">&lt;<a href="mailto:Jarmo.Venalainen@schneider-electric.com" target="_blank">Jarmo.Venalainen@schneider-electric.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font size="2" face="sans-serif">I did a slide on the effect of North facing
modules.  For even a fairly aggressive rotation North as shown, the
effect is &quot;only&quot; a 50% reduction.</font>
<br>
<br><font size="2" face="sans-serif">The questions of whether or not to do
it, are,</font>
<br>
<br><font size="2" face="sans-serif">- is the mounting structure simpler,
lower cost</font>
<br><font size="2" face="sans-serif">- security against wind</font>
<br><font size="2" face="sans-serif">- can I put a larger array on the roof
 (typically yes, if you make back to back pyramid shaped structures)</font>
<br><font size="2" face="sans-serif">- overall, what is the cost versus benefit</font>
<br><img src="cid:_1_0C8BA1DC0C8B99880052BC8F88257E90">
<br><font size="2" face="sans-serif">JARMO<br>
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Jarmo Venalainen</b>  |  </font><font size="1" color="#008000" face="Arial"><b>
Schneider Electric </b></font><font size="1" face="Arial"><b>  |  Xantrex
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*** Please consider the environment before printing this e-mail</font><font size="3"><br>
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<td><font size="1" color="#5f5f5f" face="sans-serif">From:</font>
</td><td><span class=""><font size="1" face="sans-serif">&quot;Peter Parrish&quot; &lt;<a href="mailto:peter.parrish@calsolareng.com" target="_blank">peter.parrish@calsolareng.com</a>&gt;</font>
</span></td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">To:</font>
</td><td><font size="1" face="sans-serif">&quot;&#39;RE-wrenches&#39;&quot; &lt;<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>&gt;,
</font>
</td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">Date:</font>
</td><td><font size="1" face="sans-serif">07/28/2015 12:22 AM</font>
</td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">Subject:</font>
</td><td><span class=""><font size="1" face="sans-serif">[RE-wrenches] Using the North Facing
Roof</font>
</span></td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">Sent by:</font>
</td><td><font size="1" face="sans-serif">&quot;RE-wrenches&quot; &lt;<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>&gt;</font></td></tr></tbody></table>
<br>
<hr noshade><span class="">
<br>
<br>
<br><font size="2" color="#004080" face="Calibri">I recently read a short piece
that caught me up short, and I quote:<br>
</font>
<br><font size="2" color="#004080" face="Calibri">\u201cThe fast dropping cost
of solar, while a huge boon to the adoption of solar PV, has counter-intuitively
altered design parameters. No longer is the north-facing roof considered
unusable because limited application in less-than optimal orientations
can still show a positive net benefit. Arrays are thus designed now with
elements or sub-arrays in these locations, increasing overall kW installation
while reducing the energy production per capacity installed. This might
have been anticipated based on sheer economic analysis from a users perspective,
but so long has solar been expensive that these less optimal orientations
were never seriously considered.\u201d</font>
<br><font size="2" color="#004080" face="Calibri"> </font>
<br><font size="2" color="#004080" face="Calibri">I doubt that the individual
who wrote this piece came to these conclusions him/herself. Does anyone
know of a recent article that argued this perspective? Is this an emerging
design practice? If so, I\u2019d like to know more about it. </font>
<br><font size="2" color="#004080" face="Calibri"> </font>
<br><font size="2" color="#004080" face="Calibri">-        
 Peter </font>
<br><font size="2" color="#004080" face="Calibri"> </font>
<br><font size="2" color="#004080" face="Calibri">Peter T. Parrish, Ph.D.</font>
<br><font size="2" color="#004080" face="Calibri">President, SolarGnosis</font>
<br><font size="2" color="#004080" face="Calibri">1107 Fair Oaks Ave., Suite
351</font>
<br><font size="2" color="#004080" face="Calibri">South Pasadena, CA 91030</font>
<br><font size="2" color="#004080" face="Calibri"><a href="tel:%28323%29%20839-6108" value="+13238396108" target="_blank">(323) 839-6108</a></font>
<br><font size="2" color="#004080" face="Calibri"><a href="mailto:petertor@pobox.com" target="_blank">petertor@pobox.com</a></font>
<br><font size="2" color="#004080" face="Calibri"> </font>
</span><p><br></p></blockquote></div></div></div></div>