Publications

DOE supports the development of the International Code Council’s (ICC) International Energy Conservation Code (IECC), the national model code adopted by or forming the basis of residential energy codes promulgated by a majority of U.S. states, as well as other voluntary building energy codes. DOE performs a cost-effectiveness analysis of proposed modifications to the codes as part of that support and also performs an analysis of cost-effectiveness of new code versions.1 This document represents the methodology DOE uses in performing such analyses.

This document lays out the U.S. Department of Energy’s (DOE’s) methodology for evaluating the cost-effectiveness of energy code and standard proposals and editions. The evaluation is applied to new provisions or editions of ANSI/ASHRAE/IES2 Standard 90.1 and the International Energy Conservation Code. The methodology follows standard life-cycle cost (LCC) economic analysis procedures.

62 Commercial Buildings were evaluated for compliance with the 2009 IECC/ASHRAE 90.1-2007 be-tween October 1, 2010 and June 30, 2011. Of that number, 17 buildings were eventually dropped from the study for several reasons: Building would not be completed within time frame and no similar building could be found to merge Project “died” prior to construction ever starting Building was completed or nearly so prior to first visit by Evaluator.

Total System Performance Ratio (TSPR) is a metric for evaluating overall system efficiency instead of individual component efficiency, a solution that could also eventually facilitate the transition to a 100% performance-based code structure. TSPR is a ratio that compares the annual heating and cooling load of a building to the annual energy consumed by the building's HVAC system. This technical documentation provides background on the TSPR and support for the mechanical performance factors that are developed each 90.1 edition cycle to be used in the calculation. The current factors are developed for the 2022 edition of 90.1 in combination with addendum AG.

This technical documentation provides background on TSPR and support for the mechanical performance factors that are developed each 90.1 edition cycle to be used in the calculation. The current factors are developed for the 2022 edition of 90.1 in combination with addendum AG.

The goals of this study were threefold: 1) Provide feedback to the BECP on the implementation of the BECP protocol 2) Develop a preliminary pattern/range of the existing compliance rates of newly constructed residential dwellings and commercial buildings based on jurisdictions in Illinois that have adopted the building energy codes and 3) Identify areas where home performance and codes training and education activities could be improved or refocused. Measurements of a small sample set (10) of commercial buildings were also taken. Due to the insignificance sample size, a commercial compliance rate is not reported here.

The purpose of this report is to document findings and final results from the Maryland field study, including a summary of key trends observed in the field, their impact on energy efficiency, and whether the selected education and training activities resulted in a measurable change in statewide energy use.

A research project in the state of Maryland investigated energy code-related aspects of residential single-family new construction. The study was initiated in January 2015 and continued through July 2015. During this period, research teams visited 207 homes during various stages of construction, resulting in a substantial data set based on observations made directly in the field.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.

Prototype housing models were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), pertaining to energy conservation standards for manufactured housing.  Energy models for the HUD baseline code and the DOE final rule are available for each climate.