: Solar software question [RE-wrenches]

[Dean T. Newberry]

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Hi Jeff,
The little spreadsheet I have only has an input for the net peak watts 
of your system, it then allows you to select several american cities for 
sunniness data, tilt and rotate a proposed array and see the output 
month by hour, month, annual, and includes pg&e time of use metering 
display.  The results match monitoring +- 10%.  You can download the 
spreadsheet at  http://www.dcn.davis.ca.us/go/deant/EnergyCalc.xlt.

cul  deant

Jeff Yago wrote:

> 
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>I know we have discussed a few times over the years, but thought
>something is new out there.  There have been several recent posts
>about some problems with solar sizing software and solar sizing
>spreadsheets.  I have several programs that we purchased about 3 years
>ago, but am not very pleased with them.
>
>Is there any software program (for windows) that has been out there
>long enough that you have a good feeling on its accuracy?  I just want
>the basic pv system performance estimating information and ability to
>do "what if" changes to battery and array size, without spending all
>day entering numbers.  What program have you found that predicted
>close to what your system actually did?
>
>Source and Price?
>
>Thanks,
>
>Jeff Yago
>
>
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-- 
*Quantum Energy Group*
/Your renewable energy systems integrator.../

*www.quantumcenergy.com* <http://http://mjdsolar.com/>
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	Dean T. Newberry
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430 D Street
Davis,  CA   95616
T:  (530) 758-6064
F:  (530) 758-3684
deant at dcn.org <mailto:deant at dcn.org>

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