Publications

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Document type: State-specific, Technical Assistance report
Publication Date: September 2009
Focus: Adoption
This nationwide analysis of commercial energy code compares ASHRAE Standard 90.1-2007 with the commercial code in each state as of June 2009. The results are provided in chapters specific to each state.States with unique energy codes were not included in the analysis because the codes in these states would be difficult to appropriately compare to ASHRAE Standard 90.1 and most of these states have energy offices that routinely assess their codes against the model codes. In states with codes prior to and including the 2000 IECC or Standard 90.1-1999, those states with no statewide energy code, and home rule states which did not specifically request that another code be used, Standard 90.1-1999 was used as the baseline for comparison.Three DOE Benchmark buildings were used for the simulation used in this analysis: a medium office building (53,600 ft2), a mid-rise apartment building (33,700 ft2), and a non-refrigerated warehouse (49,500 ft2)— representing ASHRAE Standard 90.1 non-...
Document type: State-specific, Technical Assistance report
Publication Date: September 2009
Focus: Adoption
This analysis of residential energy code compares the requirements of the 2009 International Energy Conservation Code (IECC) with the residential code—or typical construction practice in the absence of a code—in most states as of June 2009. The results, which include estimated typical energy savings of updating each state’s code to the 2009 IECC, are provided in chapters specific to each state.Several states have either not adopted a mandatory energy code or developed their own codes which have minimal or no connection to the IECC. The latter—including California, Florida, Oregon, and Washington— were not included in this analysis because the codes in these states would be difficult to appropriately compare to the 2009 IECC and most of these states have energy offices that have already assessed the IECC on their own.
Publication Date: July 2009
Focus: Compliance
The overall objective of the combined studies covered in this report is to provide the Vermont Department of Public Service (DPS) with residential new construction market assessments and baselines to help identify opportunities for increased energy efficiency in Vermont. This report summarizes the combined findings of a phone survey of 296 homeowners, on-site audits conducted at 106 recently constructed homes across Vermont, and in-depth interviews with 25 builders, nine HVAC contractors and ten insulation contractors.
Document type: Reports and Studies
Publication Date: June 2009
Focus: Compliance
The objective of this report is to assess the compliance of newly-constructed single-family homes with the Vermont Residential Building Energy Standards (RBES). This analysis is part of a broader study of the single-family residential new construction market in Vermont.