Publications

The Nebraska Energy Office (NEO) commissioned Britt/Makela Group, Inc. (BMG) to assess compliance with the commercial provisions of the 2009 International Energy Conservation Code (IECC). The goals of the project were to: 

• Assess compliance rates for projects that represented typical commercial construction in Nebraska 
• Collect information on energy code compliance issues that could be used to establish a framework for future energy code implementation programs in the state.

The cost estimate spreadsheet (PNNL 2024) that supports cost estimates in this report is organized in sections, some with multiple worksheets, each highlighted with a different colored tab described in the introduction to the spreadsheet:

1. Introduction
2. HVAC cost estimates 
3. Lighting cost estimates
4. Envelope cost estimates
5. Cost estimate summaries and cost-effectiveness analysis results 

The purpose of this analysis is to examine the cost-effectiveness of the 2022 edition of ANSI/ASHRAE/IES2 Standard 90.1 (Standard 90.1-2022), which is developed by the ASHRAE Standard Standing Project Committee (SSPC) 90.1, and is the model energy standard for all commercial buildings and multifamily residential buildings over three floors.PNNL analyzed the cost-effectiveness of changes in Standard 90.1-2022, compared to the previous 90.1-2019 edition, as applied in commercial buildings across the United States.

The purpose of this analysis is to examine the cost-effectiveness of the 2019 edition of ANSI/ASHRAE/IES Standard 90.1 (Standard 90.1-2019), which is developed by the ASHRAE Standard Standing Project Committee (SSPC) 90.1, and is the model energy standard for all commercial buildings and multifamily residential buildings over three floors

Companion spreadsheet to the National Cost Effectiveness of Standard 90.1-2016 report.

The purpose of this analysis is to examine the cost-effectiveness of the 2016 edition of ANSI/ASHRAE/IES Standard 90.1, which is developed by the ASHRAE Standard Standing Project Committee (SSPC) 90.1, and is the model energy standard for all commercial buildings and multifamily residential buildings over three floors.

The purpose of this analysis is to examine the cost-effectiveness of the 2013 edition of ANSI/ASHRAE/IES1 Standard 90.1 (ANSI/ASHRAE/IES 2013). PNNL analyzed the cost-effectiveness of changes in Standard 90.1 from 90.1-2010 to 90.1-2013, as applied in commercial buildings for each state in the United States.

The purpose of this analysis is to examine the cost-effectiveness of the 2010 edition of ANSI/ASHRAE/IES1 Standard 90.1.  PNNL analyzed the cost-effectiveness of changes in Standard 90.1 from 90.1-2007 to 90.1-2010, as applied in the United States.

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.

These analyses evaluate the cost-effectiveness of the prescriptive path of the 2015 edition of the International Energy Conservation Code (IECC), relative to the 2012 and 2009 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.

National Energy and Cost Savings for New Single- and Multifamily Homes: A Comparison of the 2006, 2009, and 2012 Editions of the IECC

Pacific Northwest National Laboratory (PNNL) prepared this analysis to support DOE in evaluating the economic impacts associated with updated codes in residential buildings. This analysis focuses on single-family and low-rise multifamily residential buildings based on the latest edition of the International Energy Conservation Code (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.

Presentation slides from the 11/17/22 Outside-the-Box Options to Advance Multifamily Building Efficiency 2022 Summer Seminar Series webinar.

A research project in the state of Montana identified opportunities to reduce homeowner utility bills in residential single-family new construction by increasing compliance with the state energy code. The study was initiated in May 2018; data collection began in June 2018 and continued through September 2018. During this period, the project team visited 125 homes at various stages of construction, resulting in a data set based on observations made directly in the field.

This letter certifies that Minnesota has reviewed the provisions of its residential building code regarding energy efficiency and made a determination as to whether it is appropriate for Minnesota to revise its residential energy code. The letter further certifies that Minnesota has reviewed and updated the provisions of its commercial energy code.

The framework presented in this report is intended to align with industry efforts to develop optional approaches for achieving advanced energy and emissions goals through building codes and standards, including related technical briefs and analysis published by DOE supporting net zero energy (NZE) and net zero operational energy emissions (NZOEE) targets in residential and commercial buildings (Salcido et al. 2024, Franconi et al. 2024). DOE’s briefs contain supporting technical analysis and sample mandatory code language designed to overlay the model energy code (MEC). The documents address all building types and climate zones addressed by MECs, as well as multiple compliance paths contained therein.