<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_ym19_1_1535899037711_38815"><span id="yui_3_16_0_ym19_1_1535899037711_38814">I have modeled PV in eQuest and had the same problem. The simulation showed much less than the PV vendor estimated. The actual generation history confirmed that the vendor's calculations were very close.</span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1535899037711_38846"><span id="yui_3_16_0_ym19_1_1535899037711_38814"><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1535899037711_38847"><span id="yui_3_16_0_ym19_1_1535899037711_38814">I have tried the TMY2 and TMY3 files for the area and it made no appreciable difference. I requested all the information eQuest requested from the vendor and plugged that in, so it is not an input error. I even tried changing the orientation and angle of the PV panels, but could not approach the actual generation.<br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1535899037711_38946"><span id="yui_3_16_0_ym19_1_1535899037711_38814"><br></span></div><div dir="ltr" id="yui_3_16_0_ym19_1_1535899037711_38963"><span id="yui_3_16_0_ym19_1_1535899037711_38814">Maybe someone else can enlighten us?</span></div><div id="yui_3_16_0_ym19_1_1535899037711_38746"> </div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1535899037711_38782">Paul Diglio<br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1535899037711_38787" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1535899037711_38786"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1535899037711_38785"> <div dir="ltr" id="yui_3_16_0_ym19_1_1535899037711_38784"> <font id="yui_3_16_0_ym19_1_1535899037711_38783" size="2" face="Arial"> <hr id="yui_3_16_0_ym19_1_1535899037711_38877" size="1"> <b><span style="font-weight:bold;">From:</span></b> Pramod .D via Equest-users <equest-users@lists.onebuilding.org><br> <b><span style="font-weight: bold;">To:</span></b> "equest-users@lists.onebuilding.org" <equest-users@lists.onebuilding.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, September 3, 2018 1:03 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> [Equest-users] PV simulation helioscope vs eQuest<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1535899037711_38882"><br><div id="yiv8945490297">
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<div class="yiv8945490297MsoNormal" id="yui_3_16_0_ym19_1_1535899037711_38879">Dear eQuesters,</div>
<div class="yiv8945490297MsoNormal" id="yui_3_16_0_ym19_1_1535899037711_39006"> </div>
<div class="yiv8945490297MsoNormal" id="yui_3_16_0_ym19_1_1535899037711_38883">Recently I have been working on a project where the clients are planning to use the PV modules for electricity generation. I have a Helioscope simulation report provided by the PV contractor which shows the power generation as 105,300 kWh
per year. However, when I use the same details mentioned in the report for my eQuest simulation, I am getting 26,576 kWh. Can anyone please explain the discrepancies on these reports or am I missing something?</div>
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<div class="yiv8945490297MsoNormal">The PV system used in this project has 4 inverters of capacity 20kW each. Four segments PV models with 33.6kW, 18.6kW 16.8kW and 16.1kW power generation capacity. Tracking volts of inverters : 244-529 Vac.</div>
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<div class="yiv8945490297MsoNormal">I really appreciate your time.</div>
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<div class="yiv8945490297MsoNormal"><span style="color:#1F497D;">Thanks,</span></div>
<div class="yiv8945490297MsoNormal" style="background:white;"><b><span style="font-size:10.5pt;color:#C30000;">Pramod D. |</span></b><b><span style="font-size:10.5pt;color:#7F7F7F;"> Mechanical Engineer
</span></b><b><span style="color:#212121;"></span></b></div>
<div class="yiv8945490297MsoNormal" style="background:white;"><b><span style="font-size:10.5pt;"><a rel="nofollow" ymailto="mailto:d.pramod@setty.com" target="_blank" href="mailto:d.pramod@setty.com"><span style="color:blue;">d.pramod@setty.com</span></a></span></b><b><span style="color:#212121;">
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