HPXML Dominates Residential Market, New Report Finds

Posted by Julie Caracino on January 18, 2017
HPXML Dominates Residential Market, New Report Finds

The Home Performance Extensible Markup Language (HPXML) Data Dictionary and Transfer Standard have been gaining traction in the residential energy efficiency industry over the last few years as software developers continue to adopt the data standard and new resources are released to the market to help programs integrate the standard into their operations.

HPXML is an open data standard created to support a growing industry by facilitating communication and the exchange of information and data on residential building and energy performance. HPXML is published by the Building Performance Institute (BPI) and managed by the Home Performance Coalition (HPC). HPC is a non-profit organization that works with industry leaders in the home performance and weatherization industries to create energy efficient, healthy and safe homes through research and education. HPC chairs the national HPXML working group that consists of industry experts in program administration, implementation, software development, research, and government.

On December 30, 2016, the Consortium for Energy Efficiency (CEE) released its 2016 Existing Homes Program Overview. This annual report characterizes the existing homes program market for CEE members, including the prevalence of open data standards, like HPXML, Green Button, and BEDES that are being used to standardize the collection and exchange of data between software systems.

From the 24 programs that responded to the question of whether they’re using an industry standard, about one-third of programs indicated they’re using HPXML. The other two-thirds of respondents are not using an industry standard.

This is good news for stakeholders that are using or thinking about using HPXML.

By adopting HPXML, the costs associated with collecting data for contractors and programs have the potential to go way down as the DOE recently found in a new case study on HPXML implementation in Arizona. Program administrators can adopt off-the-shelf software solutions rather than building customized platforms that are expensive to maintain and may become obsolete. Some programs have also opened the software market to contractors, allowing them to use the tool of their choice, which has reduced administrative costs for contractors and increased their satisfaction with the program.

Of course, it’s the two-thirds of programs not using HPXML that HPC has been focused on over the last two years. As the chair of the national HPXML working group, HPC is drafting an industry roadmap that will prioritize strategies for increasing adoption of HPXML over the next five years. One of these strategies is to develop a clear explanation for stakeholders on how savings can be achieved through standardization. Another strategy is to align HPXML with the Real Estate Standards Organization’s Data Dictionary, which will lead to the auto-population of multiple listing services with home energy efficiency data.

HPC is also currently working with the DOE to develop an online HPXML data dictionary, which will also map to BEDES and RESO. This online data dictionary is expected to be available in early April. The Data Standards Roadmap is expected to be released at the 2017 HPC National Home Performance Conference & Trade Show in March, hosted by Tennessee Valley Authority and in partnership with the U.S. Department of Energy (DOW), Weatherization Assistance Program (WAP).

For more information about HPXML, visit


Julie Caracino is the director of research and standards for the Home Performance Coalition.

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