Technical Assistance Reports

DOE provides technical assistance, including upgrading of voluntary codes, compliance material development, economic analysis, and training. The following reports were part of this assistance. Many of the following documents are available as Adobe Acrobat PDFs. Download Acrobat Reader.

Nationwide Analysis Reports

Nationwide commercial and residential code analysis final reports:

Impacts of the 2009 IECC for Residential Buildings at State Level, (September 2009) (PDF 4.0 MB)
Impacts of Standard 90.1-2007 for Commercial Buildings at State Level, (September 2009) (PDF 2.2 MB)
See the Status of State Energy Codes database for individual states analysis reports.

Residential Reports

Gulf Coast: Analysis of Energy Saving Impacts of New Residential Energy Codes for the Gulf Coast (PDF 98 KB).
Idaho: Assessment of Impacts from Updating Idaho's Residential Energy Code to Comply with the 2000 IECC (PDF 298 KB).
Illinois: Assessment of Impacts from Adopting the 2000 International Energy Conservation Code for Residential Buildings in Illinois (PDF 450 KB).
Illinois: Assessment of Impacts from Adopting the 2006 International Energy Conservation Code for Residential Buildings in Illinois (PDF 132 KB).
Iowa: Assessment of Impacts from Updating Iowa's Residential Energy Code to Comply with the 2003 International Energy Conservation Code (PDF 119 KB).
Iowa: Assessment of Impacts from Updating Iowa's Residential Energy Code to Comply with the 2000 International Energy Conservation Code (PDF 88 KB).
Kentucky: Assessment of Impacts from Updating Kentucky's Residential Energy Code to Comply with the 2000 IECC (PDF 334 KB).
Maryland: Impacts of 1993 Model Energy Code on Residential Buildings in Maryland (PDF 22 KB).
Michigan: Cost Effectiveness of the 2000 International Energy Conservation Code in Michigan (PDF 1.2 KB).
New Hampshire: Analysis of Potential Benefits and Costs of Adopting the 1995 Model Energy Code on Residential Buildings in New Hampshire (PDF 40 KB).
New Mexico: Assessment of Impacts from Updating New Mexico's Residential Energy Code to Comply with the 2000 International Energy Conservation Code (PDF 40 KB).
New Mexico: Building Code Update Will Cut Energy Bills in New Mexico

PDF 17 KB

New York: Comparison of the 2004 Supplement to the IECC to the Current New York Energy Conservation Code - Residential Buildings (PDF 1 KB).
North Carolina: Recommended Program for North Carolina State Energy Code Compliance Study (PDF 85 KB).
North Dakota: Assessment of Impacts from Updating North Dakota's Residential Energy Code to Comply with the 2000 International Energy Conservation Code (PDF 158 KB).
Pennsylvania: Assessment of the Pennsylvania Housing Research Center Alternative Code (PDF 100 KB).
Utah: Analysis of 2009 International Energy Conservation Code Requirements for Residential Buildings in Utah (PDF 150 KB)
West Virginia: Energy Efficiency of the 2000 International Energy Conservation Code in West Virginia (PDF 153 KB).
West Virginia: Energy Efficiency of the 2003 International Energy Conservation Code in West Virginia (PDF 195 KB).
Wyoming: Analysis of Impacts of Adopting the 2006 International Energy Conservation Code for Residential Buildings in Wyoming (PDF 181 KB).

Commercial Reports

Arizona: Comparison of Commercial Building Energy Design Requirements for Envelope and Lighting in Recent Versions of ASHRAE/IESNA Standard 90.1 and the International Energy Conservation Code, with Application to the State of Arizona (PDF 181 KB).
Gulf Coast: Analysis of Energy Saving Impacts of New Commercial Energy Codes for the Gulf Coast (PDF 832 KB).
Illinois: Statewide Savings Projections from the Adoption of a Commercial Building Energy Code in Illinois (PDF 254 KB).
Illinois: Analysis of Potential Benefits and Costs of Adopting ASHRAE Standard 90.1-1999 as a Building Energy Code in Illinois Jurisdictions (PDF 312 KB).
Illinois: 2004 Statewide Savings Projections from the Adoption of a Commercial Building Energy Code in Illinois (PDF 244 KB).
Iowa: Analysis of Potential Benefits and Costs of Updating the Commercial Building Energy Code in Iowa (PDF 345 KB).
Louisiana: Economic Impact of Potential Adoption of Commercial Building Energy Standards that Meet or Exceed ASHRAE/IESNA Standard 90.1-1989 in Louisiana (PDF 23 KB).
Massachusetts: Energy and Cost Impacts of Proposed New Commercial Building Energy Codes for the Commonwealth of Massachusetts (PDF 54 KB).
Michigan: Analysis of Potential Benefits and Costs of Adopting ASHRAE Standard 90.1-1999 as a Commercial Building Energy Code in Michigan (PDF 268 KB).
Michigan: Michigan State Code Adoption Analysis: Cost-Effectiveness of Lighting Requirements - ASHRAE/IESNA 90.1-2004 (PDF 136 KB).
Montana: Montana Slab Edge Insulation Analysis for 2006 IECC Adoption (PDF 294 KB).
Montana: Economic Comparison of 1992 and 1993 Model Energy Codes for Small Commercial Buildings in Montana (PDF 16 KB).
New Mexico: Energy Savings and Economic Analysis of Updating New Mexico's Commercial Building Energy Code (PDF 724 KB).
New Mexico: Building Code Update Will Cut Energy Bills in New Mexico (PDF 17 KB).
New York: Analysis of Energy Saving Impacts of ASHRAE 90.1-2004 for the State of New York(PDF 542 KB ).
New York: Analysis of IECC 2003 Chiller Heat Recovery for Service Water Heating Requirement for New York State (PDF 149 KB ).
New York: New York State Code Adoption Analysis: Lighting Requirements (PDF 84 KB).
New York: Cost-Effectiveness and Impact Analysis of Adoption of Standard 90.1-2007 for New York State (PDF 98 KB)
North Carolina: Recommended Program for North Carolina State Energy Code Compliance Study (PDF 85 KB).
North Dakota: Analysis of Potential Benefits and Costs of Updating the Recommended Commercial Building Energy Standard in North Dakota (PDF 303 KB ).
Tennessee: Analysis of Potential Benefits and Costs of Adopting ASHRAE Standard 90.1-2001 as a Commercial Building Energy Code in Tennessee (PDF 254 KB ).
Texas: Texas State Building Energy Code: Analysis of Potential Benefits and Costs of Commercial Lighting Requirements (PDF 180 KB).
Texas: Economic Impact of Potential Adoption of Commercial Building Energy Standards that Meet or Exceed ASHRAE/IESNA Standard 90.1-1989 in Texas (PDF 23 KB).

Reference Documents

Construction Cost Impact Analysis of the U.S. Department of Energy Mandatory Performance Standards for New Federal Commercial and Multi-Family, High-Rise Residential Buildings (PDF 2,048 KB).
Energy Conservation Potential of the U.S. Department of Energy Interim Commercial Building Standards (PDF 5,177 KB).