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<font face="Helvetica, Arial, sans-serif">SAM is what you're looking
for:<br>
<a class="moz-txt-link-freetext" href="https://sam.nrel.gov/">https://sam.nrel.gov/</a><br>
<br>
I didn't have much luck last time I tried to import TOU utility
data, but you can enter your parameters manually if the
auto-import doesn't work for you.<br>
<br>
Dave<br>
</font><br>
<div class="moz-cite-prefix">On 2015/4/8 16:15, Mick Abraham wrote:<br>
</div>
<blockquote
cite="mid:CABOJ=XS3Q7cr4kks8ZLGwqSrom5COHORGnSA21CakbLJMrChTA@mail.gmail.com"
type="cite">
<div dir="ltr">Hello, Mechanix~
<div><br>
</div>
<div>A client requested a pure grid tie PV quote and of course I
wish to help him project ROI return on investment. PV Watts
only allows a single value to be keyed for the cents per
kilowatt-hour, but my customer is on a TOU "time of use"
billing program, so from 1 P.M. to 5 P.M. the value of his
generated power is ~50% of the value during all other sunny
hours. </div>
<div><br>
</div>
<div>Is there a more sophisticated ROI calculation tool that
allows $0.xx per kilowatt hour for one time interval then
$0.yy in for a different time interval? This particular
situation then also needs $0.zz for a third interval to get an
accurate projection. The rooftop is skewed to the east so that
skews the power delivery to benefit those hours before the
value per kilowatt hour drops, so the ideal ROI tool would
factor in that non-180 degree azimuth orientation, roof pitch
etc. </div>
<div><br>
</div>
<div>If I can think of any way to make this question more
complicated, I'll post a follow up (!) </div>
<div><br>
</div>
<div>Thanks in advance. The Wrench List is da bomb!</div>
<div><br clear="all">
<div>
<div class="gmail_signature">Mick Abraham, Proprietor<br>
<a moz-do-not-send="true"
href="http://www.abrahamsolar.com" target="_blank">www.abrahamsolar.com</a><br>
<br>
Voice: 970-731-4675</div>
</div>
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