Publications

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Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of Utah, using the 2006 IECC as the baseline code.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of Vermont, using a customized version of the 2009 IECC as the baseline code with better slab insulation and windows and tighter duct sealing.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of Virginia, using a customized version of the 2009 IECC as the baseline code without duct testing requirements.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of Washington, using the 2006 IECC as the baseline code.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of West Virginia, using the 2006 IECC as the baseline code.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of Wisconsin, using a customized version of the 2006 IECC as the baseline code with improved wall insulation and windows.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Model Data
Publication Date: May 2012
Page Focus: Code Development

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 2006, 2009 and 2012 versions of the IECC are available for each state.

This set of IECC Prototype Building Models is for the state of Wyoming, using the 2006 IECC as the baseline code.

Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

Document type: Resource Guide
Publication Date: September 2012
Page Focus: Adoption, Code Development, Compliance

This guide provides information for anyone dealing with a lighting energy code or standard. It provides background and development information to help readers understand the basis for requirements and their intent. The guide also provides detailed explanations of the major types of requirements such that users can more effectively design to meet compliance while applying the most flexibility possible.

Document type: Reports and Studies
Publication Date: August 2015
Page Focus: Code Development, Residential

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/IES Standard 90.1 and the International Energy Conservation Code. The methodology follows standard life-cycle cost (LCC) economic analysis procedures. Cost-effectiveness evaluation requires three steps: 1) evaluating the energy and energy cost savings of code changes, 2) evaluating the incremental and replacement costs related to the changes, and 3) determining the cost-effectiveness of energy code changes based on those costs and savings over time.

This document was originally published in January, 2015. Revision 1 was published in August, 2015, and is available at: commercial_methodology.pdf.

Document type: Reports and Studies
Publication Date: April 2012
Page Focus: Code Development

The U.S. Department of Energy's (DOE's) Building Energy Codes Program has developed and established a methodology for evaluating the energy and economic performance of residential energy codes. This methodology serves two primary purposes. First, as DOE participates in the consensus processes of the International Code Council, the methodology described herein will be used by DOE to ensure that its proposals are both energy efficient and cost effective. Second, when a new version of the International Energy Conservation Code is published, DOE will evaluate the new code as a whole to establish expected energy savings and cost effectiveness, which will help states and local jurisdictions interested in adopting the new codes. DOE's measure of cost-effectiveness balances longer-term energy savings against additions to initial costs through a life-cycle cost perspective.

2015 Revision to this document was posted August 12, 2015. This document is an update to the U...

Document type: Model Data
Publication Date: April 2011
Page Focus: Code Development

This speadsheet provides a summary of the percentage of energy savings with plug loads for the ASHRAE Standard 90.1 Prototype Building Models.

Document type: Analysis
Publication Date: June 2015
Page Focus: Code Development

This analysis focuses on one- and two-family dwellings, townhomes, and low-rise multifamily residential buildings based on the International Energy Conservation Code (IECC). PNNL evaluated the cost-effectiveness of the changes in the prescriptive and mandatory residential provisions of the 2015 edition of the IECC, hereafter referred to as the 2015 IECC, compared to those in the 2012 and 2009 IECC. The current analysis builds on the PNNL technical report titled 2015 IECC: Energy Savings Analysis (Mendon et al. 2015) which identified the prescriptive and mandatory changes introduced by the 2015 IECC compared to the 2012 IECC and determined their energy savings impact.

Document type: Reports and Studies
Publication Date:
Page Focus: Code Development

More than 200,000 homes are factory built in the United States each year to the federally preemptive Manufactured Housing Construction and Safety Standards, mandated by the U.S. Department of Housing and Urban Development (HUD). This paper analyzes national energy use and savings potential from improvements to thermal distribution system efficiency, thermal envelopes, and heating, ventilation and air conditioning (HVAC) equipment over what is currently required by HUD code. Estimated energy savings over current HUD code are provided for four cases: National Fire Protection Association Standard 501-2005, the 2006 International Energy Conservation Code, the U.S. Environmental Protection Agency’s ENERGY STAR manufactured housing guidelines , and Best Practice, based on the U.S. Department of Energy’s Building America Industrialized Housing Partnership program home built in the Pacific Northwest. Savings estimates are also provided from improved HVAC system efficiencies, such as using...

Document type: Analysis, Determination
Publication Date: April 2019
Page Focus: Code Development

This report provides preliminary estimates of the incremental costs and savings associated with the residential provisions of the 2018 International Energy Conservation Code (IECC). The analysis is provided to the U.S. Department of Energy (DOE) to help quantify the costs and savings impacts of the latest published edition of the IECC, the 2018 IECC. The resulting information aids in understanding the net costs and economic impacts associated with updated energy codes, which is typically of interest to adopting states and localities.

Document type: Analysis, Determination, Technical Support Document
Publication Date: August 2018
Page Focus: Code Development

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.

Document type: Analysis
Publication Date:
Page Focus: Code Development

A quantitative analysis of the estimated differences between ASHRAE Standard 90.1-1989 and ASHRAE Standard 90.1-1999 to inform and support the final determination.

Document type: Analysis, Reports and Studies
Publication Date: April 2012
Page Focus: Code Development

Pacific Northwest National Laboratory (PNNL) conducted a series of cost effectiveness analyses for the U.S. Department of Energy (DOE), covering the 2009 and 2012 editions of the International Energy Conservation Code (IECC) for new single and multifamily homes. The evaluations were performed against a 2006 IECC baseline, taking state-specific code amendments into consideration. These reports outline the results of these analyses, including a National Cost Analysis and Cost Analyses for selected states.

Document type: Analysis
Publication Date: February 2015
Page Focus: Code Development

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2015 edition of the International Energy Conservation Code (IECC), relative to the 2006 IECC for all 50 states and the District of Columbia. The analysis covers one- and two-family dwelling units, town-homes, and low-rise multifamily residential buildings covered by the residential provisions of the 2015 IECC. These reports were originally published in October 2015, and updated in February 2016 to update numbers reported in certain results tables.

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