SAM is what you're looking for:
https://sam.nrel.gov/
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.
Dave
On 2015/4/8 16:15, Mick Abraham wrote:
Hello, Mechanix~
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.
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.
If I can think of any way to make this question more complicated, I'll
post a follow up (!)
Thanks in advance. The Wrench List is da bomb!
Mick Abraham, Proprietor
www.abrahamsolar.com <http://www.abrahamsolar.com>
Voice: 970-731-4675
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