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The Home Performance with ENERGY STAR Team developed the HPXML Implementation Guide to help program administrators and software developers integrate HPXML into their operations and products.
HPXML is a set of common definitions, based on Building Performance Institute’s BPI-2100 and BPI-2200 data standards, for the attributes of the systems in a home and the computing language that facilitates the quick and easy transfer of home-related data between different market actors.
A guide and use cases are available from the Home Performance Coalition at www.hpxmlonline.com.