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.

National Cost-effectiveness of 2018 IECC
Document Number: PNNL-28515 | Document Type: Analysis, Cost-effectiveness | Publication Date:

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.

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.

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.

Cost-effectiveness Analysis of 2018 IECC - Wyoming
Document Number: PNNL-31294 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Wisconsin
Document Number: PNNL-31292 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - West Virginia
Document Number: PNNL-31292 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - District of Columbia
Document Number: PNNL-31255 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Virginia
Document Number: PNNL-31291 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Vermont
Document Number: PNNL-31290 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Utah
Document Number: PNNL-31289 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Texas
Document Number: PNNL-31288 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Tennessee
Document Number: PNNL-31287 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - South Dakota
Document Number: PNNL-31286 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - South Carolina
Document Number: PNNL-31285 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Rhode Island
Document Number: PNNL-31283 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Pennsylvania
Document Number: PNNL-31283 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - Oklahoma
Document Number: PNNL-31282 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - North Dakota
Document Number: PNNL-31280 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.

Cost-effectiveness Analysis of 2018 IECC - North Carolina
Document Number: PNNL-31279 | Document Type: Analysis, Cost-effectiveness | Publication Date:

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2018 edition of the International Energy Conservation Code (IECC), relative to the 2015 IECC with amendments for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, townhouses, and low-rise multifamily residential buildings covered by the residential provisions of the 2018 IECC.