<div dir="ltr">Maybe I'm a bit slow, but I don'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'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"><<a href="mailto:Jarmo.Venalainen@schneider-electric.com" target="_blank">Jarmo.Venalainen@schneider-electric.com</a>></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 "only" 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>
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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">"Peter Parrish" <<a href="mailto:peter.parrish@calsolareng.com" target="_blank">peter.parrish@calsolareng.com</a>></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">"'RE-wrenches'" <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>>,
</font>
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<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">"RE-wrenches" <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>></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">“The 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.”</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’d 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>