Sun Angle Calculator Program

4 Posts
Aug 27, 2012 11:36 am
Sun Angle Calculator Program

Hello from a new solar power convert. My wife, Louise, and I are in the process of installing 4KW of PV panels and an 8KW Outback Radian inverter for backup and emergency use. We're not planning to go off-grid at this time.

During the planning phase, I wrote a little program to calculate and display hourly sun position and PV production. This program proved to be very helpful, so I'm making it freely available to all. The Sun Angle Calculator (SAC) has these features:

* User-specified latitude, local horizon, and PV characteristics (number of panels, watts per panel, azimuth, tilt).

* Graphs hourly sun position relative to a local horizon on a specified month and day.

* Calculates hourly sun position and PV output power position relative to the local horizon on a specified day over 12 months, and produces a detailed report.

* Derates available PV power when the sun is shining through leafless trees or is obscured completely by leaves.

* Calculates the optimum PV azimuth and tilt for one month or for all 12 months.

* Northern hemisphere only.

You can learn more about SAC, see a screen shot, read the 16-page PDF user manual, and download the ZIP file on our family website <http://house.mdodd.com/update_solar.html#SAC>. The program is free for all to use.

I hope folks find this software useful. Comments are welcome.
 
1 Posts
Mar 19, 2014 10:04 pm
Re: Sun Angle Calculator Program

Pretty much informative but then again, some do not apply to most cases
 

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