California Energy Commission Letterhead

Notice of Availability
Computer Program

The 2008 Building Energy Efficiency Standards (Standards) were adopted by the California Energy Commission on April 23, 2008 and were approved for publication by the California Building Standards Commission on September 11, 2008. Compliance with these Standards is primarily demonstrated through the performance approach by using compliance software to show that each proposed building meets the energy budget established for that building. Public Resources Code 25402.1(a) requires that the Energy Commission make available a public domain program for showing compliance with the Standards for residential buildings. CALRES 2008 is a revised public domain compliance software for the 2008 Residential Building Energy Efficiency Standards.

CALRES 2008 is now available for demonstrating compliance with the 2008 Standards for one zone, newly constructed residential buildings.

This computer program requires the following hardware and software:

  • A computer running the Windows NT/2000/XP™ operating system and a Pentium processor with at least 128 MB RAM.
  • CD-ROM drive.
  • A hard drive with at least 30 MB of free space for the installed program files and an additional 20 MB free for temporary files that DOE 2.1E creates.

The program is available as a computer CD-ROM disk and comes with a User's Guide as a PDF file on the CD-ROM. The CD-ROM is available for $125. Please send request and check or money order made out to the California Energy Commission to:

California Energy Commission
Re: CALRES 2008
Rob Hudler, MS-37
1516 Ninth Street
Sacramento, CA 95814-5504

The Energy Commission does NOT provide technical support for this program. Technical support for this computer program is available for $250 per year from Enercomp, Inc. For questions regarding the capabilities of CALRES 2008 call: Rob Hudler at (916) 654-4072.

Date online: August 3, 2009

Mailing Lists: 50, 52, and 480

Note: California Energy Commission's formal name is State Energy Resources Conservation and Development Commission.