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HPXML / Data Standards

HPXML / Data Standards

HPXML

Home Performance eXtensible Markup Language (HPXML) reduces the costs of collecting and exchanging residential energy data so that it can be more easily aggregated, shared, and analyzed to make decisions. HPXML standardizes the name, definition, format, and exchange of more than one thousand terms used by the residential energy efficiency industry to describe buildings, energy efficiency and renewable energy features and systems, and energy performance. These data are produced and used by multiple market actors in residential energy efficiency for multiple purposes including program administration, research, the quantification of energy savings resulting home energy upgrades, and home valuation.

HPXML in Action for Home Performance

HPXML includes standard reporting templates for home performance programs that can be used to significantly reduce the data collection burden on contractors, particularly companies working with multiple programs. Collecting standard data for incentive calculation, quality assurance, evaluation, and reporting facilitate comparability across programs. It also drives down administrative costs for program administrators by enabling automated validation of project data. For example, after adopting HPXML, the NYSERDA Home Performance with ENERGY STAR program reduced the time to approve most projects from one week to less than an hour. NYSERDA was also able to incorporate data checks into its software, automatically alerting contractors to “out of bounds” values and reducing manual data review and approval processes.

To learn more about HPXML, visit www.hpxmlonline.com.

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