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Is IES Approved by USGBC for LEED Energy Compliance?

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The USGBC do not approve or certify software for LEED energy modelling. Instead, the requirement for LEED Submission is that the software must meet the specifications of ASHRAE 90.1-2007 Appendix G Performance Rating Method (PRM).

The VE meets all the requirements of Appendix G, and has been tested in accordance with ASHRAE Standard 140; it meets or exceeds all requirements of this test.