Evaluation of ANSI/ASHRAE/USGBC/IES Standard 189.1-2009

Research output: NRELTechnical Report


The National Renewable Energy Laboratory (NREL) evaluated ANSI/ASHRAE/USGBC/IES Standard 189.1-2009, 'The Standard for High-Performance Green Buildings Except Low-Rise Residential Buildings'. NREL performed this evaluation by examining the results of predictions for site energy use from a comprehensive set of EnergyPlus models. NREL has conducted an 'order-of-magnitude' analysis in this study toidentify the likely overall impact of adopting Standard 189.1-2009 over ANSI/ASHRAE/IESNA Standard 90.1-2007.
Original languageAmerican English
Number of pages55
StatePublished - 2010

NREL Publication Number

  • NREL/TP-550-47906


  • EnergyPlus
  • site energy use
  • standard 189


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