Web-based Solar Design Tools

Sustainable by design provides a suite of shareware design tools on sustainable energy topics:

  • Sun Angle Tools
  • Window Overhang and Louvres Shading Tools
  • Other Tools

If you use the program, it is suggested to pay a small shareware fee to compensate the author for his work and to encourage him to continue to maintain and improve the tool as well as respond to user feedback and questions.


  1. Liam O'Brien

    This is a great site. I particularly like the overhang tool. You can animate the shadow over any day of the year for nearly any geometry.

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