Overhang Annual Analysis

This tool lets you visualize the degree to which a horizontal overhang shades a window throughout the year. It can also be used to calculate the solar power incident on the window, relative to full, direct sun. Please read the important instructions, notes, and FAQ pages before using this tool.
NEW RELEASE AVAILABLE FOR TESTING: A new version of Overhang Annual Analysis is being developed with many new features. Final testing is underway, and during testing, you're welcome to try it out!

GENERAL INPUTS
latitude
°
window faces
show values
overhang style
 
  MORNING   AFTERNOON  
  4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00  
Jan                                   Jan
Feb                                   Feb
Mar                                   Mar
Apr                                   Apr
May                                   May
Jun                                   Jun
Jul                                   Jul
Aug                                   Aug
Sep                                   Sep
Oct                                   Oct
Nov                                   Nov
Dec                                   Dec
  4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00  
  MORNING   AFTERNOON  

Support Overhang Annual Analysis!

The development and maintenance of Overhang Annual Analysis is supported 100% by voluntary user donations. If you found this program helpful, please consider making a small donation...this can be done quickly and securely by credit card, or you can mail a check. Suggested donations are $25 for commercial use, and $10 for personal use. Please visit the Shareware page for details, or you can make a quick PayPal or credit card donation to the right. Thanks!
QUICK DONATION
Commercial ($25)
Personal ($10)

Mailing List

The author maintains a private mailing list of users of SunAngle and his other shareware solar design tools, and is happy to send you very occasional notices about software upgrades and other items of interest. Such notices do not occur more frequently than a few times a year.

If you're interested in joining the SunAngle mailing list, please send e-mail to the author with this request. Your e-mail address will never be used for commercial purposes or given to anyone else for any reason.

Note (April 2013): Christopher is currently on sabbatical, so is not taking on consulting projects right now, and e-mails may take longer than usual to receive a reply. Thanks!