Publications

In this analysis, PNNL evaluated the cost-effectiveness of the changes in the prescriptive and mandatory residential provisions of the 2018 edition of the IECC compared to those in the prior edition, the 2015 IECC.

PNNL evaluated the cost effectiveness of the changes in the prescriptive and mandatory residential provisions of the 2021 edition of the IECC, compared to those in the prior edition, the 2018 IECC.

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.

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.

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.