Code Comparison Documents
If your state is considering upgrading its current energy code, a review of one of the following resources may be useful.
State Code Compliance
- Comparison of Title 24 and ASHRAE 90.1: 8-page consultant report compares the stringency of ASHRAE/IESNA Standard 90.1-2004 and California Title 24-2008. (PDF 615 KB). Watch for Title 24 current and pending Legislation Updates, www.energy.ca.gov/title24.
- Meeting the 2030 Challenge Through Building Codes: 11-page baseline study for evaluating progress toward meeting the 2030 Challenge. (PDF 490 KB).
- 2008 Energy Code Changes - 2007 Florida Building Code: Presentation outlining the revision to Florida's Energy Code for Building Construction to increase the energy performance of new construction in Florida by at least 15%. (PDF 86 KB).
- 2008 Building Energy Efficiency Standards Residential Compliance (Commission Draft Manual): 522-page manual designed to help comply with and enforce the 2008 Title 24 California Building Energy Efficiency Standards for low-rise residential buildings. (PDF 5.3 MB).
- Energy Impact Study of the 2003 IECC, 2006 IECC, and 2006 IRC Energy Codes for Nebraska: 19-page report focusing on Nebraska's annual residential energy consumption. (PDF 89 KB).
- Life Cycle Cost Analysis of the 2000 International Energy Conservation Code for Nebraska: Report focusing on the cost effectiveness of increasing the state's residential energy code in new home construction.
State Technical Assistance Reports
Model Energy Code (MEC) Code Comparisons
- MEC 92-93: 15-page publication describing the revisions to the 1992 MEC contained in the 1993 MEC (PDF 49 KB).
- MEC 93-95: 23-page publication describing the revisions to the 1993 MEC contained in the 1995 MEC (PDF 66 KB).
- MEC 95-IECC 98: 22-page publication describing the revisions to the 1995 MEC contained in the 1998 IECC (PDF 97 KB).
International Energy Conservation Code (IECC) Code Comparisons
- IECC 98-00: 2-page fact sheet describing the revisions to the 1998 IECC contained in the 2000 IECC (PDF 72 KB).

