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2015 IECC: Energy Savings Analysis

Document Number: PNNL-23977
Document Type: Analysis, Determination
Publication Date:

Technical analysis in support of the 2015 IECC Determination.

Energy Savings Analysis: 2018 IECC for Residential Buildings

Document Type: Analysis, Determination
Publication Date:

Technical analysis in support of the 2018 IECC Determination.

Energy Savings Analysis: ANSI/ASHRAE/IES Standard 90.1-2019

Document Number: DOE/EE-2364
Document Type: Analysis, Determination, Technical Support Document
Publication Date:

To meet the statutory requirement, DOE conducted an analysis to quantify the expected energy savings associated with Standard 90.1-2019. This report documents the methodology used to conduct the analysis. Based on the analysis, DOE preliminarily determined that the 2019 edition of the ANSI/ASHRAE/IES Standard 90.1 would improve overall energy efficiency in buildings subject to the code (compared to the 2016 edition of Standard 90.1). This report represents the final version of the analysis supporting DOE’s determination on Standard 90.1-2019.

Preliminary Energy Savings Analysis: ANSI/ASHRAE/IES Standard 90.1-2019

Document Number: DOE/EE-2345
Document Type: Analysis, Determination, Technical Support Document
Publication Date:

To meet the statutory requirement, DOE conducted an analysis to quantify the expected energy savings associated with Standard 90.1-2019. This report documents the methodology used to conduct the analysis. Based on the analysis, DOE has preliminarily determined that the 2019 edition of the ANSI/ASHRAE/IES Standard 90.1 would improve overall energy efficiency in buildings subject to the code (compared to the 2016 edition of Standard 90.1).

Preliminary Energy Savings Analysis: 2021 IECC for Residential Buildings

Document Number: PNNL-31018
Document Type: Analysis, Determination, Technical Support Document
Publication Date:

The most recent edition, the 2021 IECC, was published on January 29, 2021, triggering the DOE review and determination process2. DOE and Pacific Northwest National Laboratory (PNNL) conducted a technical analysis to determine energy savings for the 2021 IECC residential provisions relative to the previous edition, the 2018 IECC (ICC 2017). This report documents the methodology used to conduct the analysis and summarizes the results.

Preliminary Energy Savings Analysis: 2018 IECC Residential Requirements

Document Number: DOE/EE-1972
Document Type: Analysis, Determination, Technical Support Document
Publication Date:

The most recent edition, the 2018 IECC, was published in August 2017, triggering the DOE review and determination process. In response, DOE and Pacific Northwest National Laboratory (PNNL) conducted a preliminary analysis to determine energy savings for the 2018 IECC residential provisions relative to the previous edition--the 2015 IECC. This report documents the methodology used to conduct the analysis and summarizes the results and findings.

Energy Savings Analysis: ANSI/ASHRAE/IES Standard 90.1-2016

Document Number: DOE/EE-1614
Document Type: Analysis, Determination, Technical Support Document
Publication Date:

To meet statutory requirements, DOE conducted an analysis to quantify the expected energy savings associated with Standard 90.1-2016. This report documents the methodology used to conduct the analysis. Based on the analysis, DOE has determined that the 2016 edition of the ANSI/ASHRAE/IES Standard 90.1 would improve overall energy efficiency in buildings subject to the code compared to the 2013 edition of Standard 90.1.