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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I have never modeled a building that used solar panels and I
have a LEED question regarding this topic.<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'>Can you include the utility cost savings of solar panels if you
are selling the energy instead of using it?<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'>Thanks,<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'>Otto<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>
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<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"'> Alan Crittendon
[mailto:alanc@dwcei.com] <br>
<b>Sent:</b> Thursday, December 02, 2010 2:34 PM<br>
<b>To:</b> 'eQuest'<br>
<b>Subject:</b> [Equest-users] ASHRAE 90.1-2007 G2.4<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I’ve
asked a variation of this before, but I am still totally confused by section
G2.4 in 90.1-2007. I’ve asked earlier about whether Solar panels
can be used to calculate the % efficiency difference between the baseline and
proposed. I was pointed to pg 274 of green building design where it
plainly says “model systems directly in the proposed design energy
model”. OK. Understood. But I am still bothered by
G2.4. It SEEMS to say the exact opposite but I can’t make sense of
it. I’ve read the user manual explanation and it doesn’t help
me out at all.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The
bldg will have solar panels generating about $20k worth of money a year.
ALL of it sold back to the electric company at 220% more than they are charged
per kwh. So it makes more sense to sell the energy he makes than to use
it. I’ve attached the two ES-D reports. Using the solar panel money
I am at </span><b><span style='font-family:"Arial","sans-serif"'>64% </span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>more efficient.
Without them I am at 35%. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
know this assumes my models are accurate but can anybody help me make sense of
this?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial Narrow","sans-serif";
color:navy'>Alan Crittendon, PE, LEED AP</span><span style='font-size:10.0pt;
color:navy'><br>
</span><span style='font-family:"Swis721 Blk BT","sans-serif";color:navy'>DW
Collier Engineering, Inc.</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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