Residential Building Stock Assessment

Supported by the region’s electric utilities, NEEA is conducting a comprehensive research study of energy efficiency in Northwest residential buildings – officially called the Residential Building Stock Assessment (RBSA). This study will inform future energy planning efforts, as well as energy efficiency utility programs and rebates offered by the region’s utilities, the Energy Trust of Oregon and the Bonneville Power Administration.

The Northwest has no precedent for a residential field study of the size and representative nature of the RBSA. The sample included public (eighty-nine), investor-owned (seven) and three gas-only utilities in Washington, Oregon, Idaho, and western Montana.

Field surveys were conducted on more than 1,850 sites across the Northwest, including more than 1,400 single-family homes. The RBSA was designed to develop a characterization of the residential sector that takes into account the diverse climates, building practices, and fuel choices across the region.

This report includes a metering study, a single-family report, a manufactured homes report, and a multi-family report.

RBSA Single-Family Public Data Files

Download the 2011 RBSA Single-Family Database.

Supporting Documentation: Ecotope Inc. 2012. 2011 Residential Building Stock Assessment: Single-Family Characteristics and Energy Use. Seattle, WA: Northwest Energy Efficiency Alliance.

RBSA Manufactured Homes Public Data Files

Download the 2011 RBSA Manufactured Homes Database.

Supporting Documentation: Ecotope Inc. 2012. 2011 Residential Building Stock Assessment: Manufactured Home Characteristics and Energy Use. Seattle, WA: Northwest Energy Efficiency Alliance.

RBSA Multi-Family Public Data Files

Download the 2011 RBSA Multi-Family Unit Database and the 2011 RBSA Multi-Family Buildings Database

Supporting Documentation:
Ecotope Inc. 2012. 2011 Residential Building Stock Assessment: Multi-Family Characteristics and Energy Use. Seattle, WA: Northwest Energy Efficiency Alliance.
RBSA Multi-Family Building Database: Entity Relationship Diagram
RBSA Multi-Family Units Database: Entity Relationship Diagram

By downloading this data, you are agreeing to include the below copyright and citations:

©2012 Copyright Northwest Energy Efficiency Alliance. All Rights Reserved.

NEEA grants to End User a limited license to use the data contained in the 2011 RBSA database subject to the following terms and conditions: Reproduction, incorporation in any derivative work, or distribution of all or any part of this data is prohibited without express acknowledgement of copyright ownership of Northwest Energy Efficiency Alliance. End User must ensure that credit is attributed to Northwest Energy Efficiency Alliance in any work derived, in whole or in part, from the data contained herein.

State by State Energy Use Reports

NEEA analyzed the RBSA data and published the following four reports summarizing single-family home energy use in Idaho, Montana, Oregon and Washington.

Idaho RBSA State Report
Montana RBSA State Report
Oregon RBSA State Report
Washington RBSA State Report

These state-level reports include overall housing utility and energy statistics per state, and also detail the type and efficiency of various components such as windows, insulation, appliances and type of heating fuel used in homes with each region of each state.

RBSA Metering Data

UPDATED November 13, 2015 – Corrected broken file links.

In addition to the 2011 RBSA Single-Family Database, the RBSA Metering (RBSAM) data is also available. The RBSAM data is comprised of end-use loads measured at 15-minute intervals over 27 consecutive months. The participants are a subset of the full RBSA Single-Family study. Due to the large number of records, the data has been split into nine separate files (Year 1 is split into four files and Year 2 (15 months) is split into five files) which will need to be combined in order to utilize the entire dataset*.  The RBSA End Use Load Shape Data (the main data file) and the RBSA End Use Load Shape Flag file (Flag file) are two supplemental files for the main dataset. The Flag file provides a set of flags as to what homes were included in the main report tables. The RBSA Metering and Load Shape Flags Information and RBSA Data Dictionary are included to further explain the data.

Note: Users of the RBSA metering data are required to agree to the Limited Rights Notice before use.

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RBSA End Use Load Shape Data Year 1 (4 files)

RBSA End Use Load Shape Data Year 2 (5 files)

RBSA End Use Load Shape Flags Data
RBSA Metering and Load Shape Flags Information
RBSA Data Dictionary

*It should be noted that the files each consist of approximately 850,000-1,000,000 rows are roughly 250-335MB each. When combined, Year 1 will have 3,507,332 rows and Year 2 will have 4,873,107 rows; all data combined should equal 7,500,000 million rows. The files are tab-delimited text files which will require a statistical analysis or database program is required to open. Excel generally will not open the individual files and will not be able to combine the files.

Article Spotlight

New study shows energy codes are working but home efficiency opportunities abound

Energy Priorities magazine takes a look at what implications NEEA's RBSA has for identifying the "low-hanging" fruit for energy efficiency in the region.

Read more here

Research Spotlight

Single-Family Highlights

In late 2012, NEEA released the first report summarizing the Residential Building Stock Assessment (RBSA): Single-Family Characteristics and Energy Use Report.

View the highlights of the report

Read the full report here


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