Energy Code Field Studies

Single-family Residential Buildings

Objective: Determine whether an investment in energy code education & training programs can produce a significant, measurable change in residential energy savings.

The study is comprised of three phases:

1. Pre-Study: A baseline study to identify the energy use in typical single-family residential buildings in a given state and opportunities for improving energy efficiency
2. Education & Training: Education, training & outreach activities targeting issues identified through the baseline study
3. Post-Study: A second study to identify the change in energy use following the education & training activities

Through the project, DOE plans to establish a sufficient data set to represent statewide construction trends and detect significant changes in energy use resulting from education & training activities.

Participating States

The following states were selected to participate in the study (original DOE funding opportunity announcement):

Several additional states have also initiated their own studies based on the DOE Methodology:

• Connecticut
• Delaware
• Idaho
• Illinois
• Michigan
• Missouri
• Montana
• Nebraska
• Tennessee
• Virginia
• West Virginia

Methodology

Highlights from the updated methodology:

• Results to be based on an energy metric and reported at the state-level
• Focuses on individual code requirements within new single-family homes
• Data confidentiality built into the experiment—no personal data will be shared
• Designed around a single site-visit prioritizing key items
• Designed with statistically significant results in mind

More information on the field study methodology and supporting research instruments is available below. Technical assistance is available from Pacific Northwest National Laboratory (PNNL), including guidance on the established methodology, customization of sampling plans, and technical analysis of the resulting data set.  

Findings

• Baseline Field Study Results Webinar (12/12/2015)
• Baseline Field Study Results Presentation (12/07/2015)

Individual state findings:

• Alabama
• Arkansas
• Georgia
• Kentucky
• Maryland
• North Carolina
• Pennsylvania
• Texas

The aggregated data set across all field study states: Phase I Field Study Data and Phase III Field Study Data

Additional data from states using the field study methodology: Additional States Public Data

Project Team Resources

• Field Study Factsheet
• Methodology Document
• Stakeholder Meeting Presentation
• Project Team Contacts

Data Collection Instrument

• 2018 IECC
• 2015 IECC
• 2012 IECC
• 2009 IECC

Multifamily Residential Energy Code Field Study

Objective: Measure the impact of energy codes on multifamily buildings and identify opportunities for savings through increased compliance.

Activities:

• Identify and resolve challenges that are unique to multifamily construction
• Update and tailor the residential methodology to accommodate multifamily buildings
• Construct a representative data set across four target states {WA, OR, MN & IL}
• Provide recommendations as to how multifamily buildings can be better represented through energy code training and other compliance-improvement programs

Impact: Compliance with building energy codes is key to ensuring intended savings to U.S. home and business owners. This project will develop an approach to accurately and affordably assess energy code compliance in multifamily buildings, as well as the savings available through increased compliance. This information is vital to utilities and others supporting compliance-improvement programs, providing the certainty they need to invest in increased efficiency through building code compliance. By developing the business case for energy efficiency, state and local governments will have additional tools to allocate their limited resources more wisely and effectively, thereby reducing energy bills and energy-related pollution. Learn more.