Publications

State Energy Code Analysis Fact Sheet - Colorado
Document Number: DOE/EE-2395 | Document Type: Analysis | Publication Date:

Expected savings overview of new homes built to the 2021 IECC and new commercial buildings built to ASHRAE Standard 90.1-2019 by State.

State Energy Code Analysis Fact Sheet - Arizona
Document Number: DOE/EE-2393 | Document Type: Analysis | Publication Date:

Expected savings overview of new homes built to the 2021 IECC and new commercial buildings built to ASHRAE Standard 90.1-2019 by State.

State Energy Code Analysis Fact Sheet - Alaska
Document Number: DOE/EE-2392 | Document Type: Analysis | Publication Date:

Expected savings overview of new homes built to the 2021 IECC and new commercial buildings built to ASHRAE Standard 90.1-2019 by State.

Impacts of Model Building Energy Codes – Interim Update
Document Number: PNNL-31437 | Document Type: Analysis | Publication Date:

DOE has conducted an interim and limited update to its 2016 study to evaluate potential building code updates using the 2016 methodology and data. This interim update includes estimated savings resulting from more recent updates to the model energy codes, including the Standard 90.1-2016 and 2019 editions, as well as the 2018 and 2021 International Energy Conservation Code (IECC).

State Energy Code Analysis Fact Sheet - Alabama
Document Number: DOE/EE-2391 | Document Type: Analysis | Publication Date:

Expected savings overview of new homes built to the 2021 IECC and new commercial buildings built to ASHRAE Standard 90.1-2019.

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.

Residential Prototype Building Models 2021 IECC - Climate Zone 8
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 7
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 6B
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 6A
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 5C
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 5B
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 5A
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 4C
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 4B
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 4A
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 3B
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 3A
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 2B
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 2A
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Residential Prototype Building Models 2021 IECC - Climate Zone 1A
Document Type: Model Data | Publication Date:

The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the recent versions of the IECC are available for each climate.

Energy Savings Analysis: 2021 IECC for Residential Buildings
Document Number: PNNL-31440 | Document Type: Analysis | Publication Date:

The most recent edition, the 2021 IECC, was published on January 29, 2021, triggering the DOE review and determination process. 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.

Cost-effectiveness Analysis of 2021 IECC - Wyoming
Document Number: PNNL-31631 | Document Type: Analysis, Cost-effectiveness | Publication Date:

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.

Cost-effectiveness Analysis of 2021 IECC - Wisconsin
Document Number: PNNL-31630 | Document Type: Analysis, Cost-effectiveness | Publication Date:

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.

Cost-effectiveness Analysis of 2021 IECC - West Virginia
Document Number: PNNL-31629 | Document Type: Analysis, Cost-effectiveness | Publication Date:

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.