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Skylighting Design Guidelines & Software: SkyCalc®
   Design Guidelines    SkyCalc 2.0®
Modular Skylights - Design Guidelines SkyCalc 2.0®
Effectiveness of lay-in ceiling insulation Program Information 
Skylighting Guidelines Acknowledgements
The knowhow™ Series

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For the California Energy Commission's Public Interest Energy Research Program (PIER), HMG has developed design guidelines for modular skylights integrated in suspended ceilings, along with a research report that summarizes the current construction practices for designing and installing modular skylights in suspended ceiling assemblies.
For the PIER program, HMG also developed a research report on the effectiveness of lay-in ceiling insulation in commercial buildings in California.

For Southern California Edison, we have developed the Skylighting Guidelines, an updated and expanded edition of the award-winning Skylight Handbook.  We have also developed SkyCalc™, an Excel-based program that identifies the optimum skylighting design for a building, and compares the net energy cost savings using a variety of electric lighting control strategies. 

The information requested on this web site will be used to support this program's efforts and to assist in your participation.  The information may also be used for reporting purposes to document program participation by users of this web site.  The information you provide will never be used for the purpose of selling or soliciting any third-party commercial product, nor will it be shared or sold to anybody else for such purposes.  By filling in the requested information you become a correspondent in this project, and you will be given access to reports, fact sheets, program updates, announcements and other such program information.  We may also occasionally include you in e-mail announcements and requests, or contact you regarding your participation in the program. If you object to these terms for the use of your information, or if you do not wish to receive any correspondence from us, you may request to be removed from the program correspondent list by sending an email message  to
All such requests will be honored.


Copyright: Heschong Mahone Group, Inc. 2012