Energy modeling of typical commercial buildings in support of ASHRAE building energy quotient energy rating program (ASHRAE RP-1771)

Yingli Lou, Yunyang Ye, Yizhi Yang, Wangda Zuo, Gang Wang

Research output: Contribution to journalArticlepeer-review


In the practice of building energy performance evaluation, two types of rating systems are widely used in building energy performance evaluation: empirical baseline energy use intensity (EUI) for existing buildings and modeled baseline EUI for new buildings. Consequently, the baseline EUIs used by those systems are inconsistent. One example is ASHRAE’s Building EQ In Operation and As Designed. To support the Building EQ, the ASHRAE RP-1771 project attempts to 1) make the baselines in both Building EQ In Operation and As Designed consistent, and 2) reconcile the Building EQ As Design with ASHRAE Standard 90.1 modeled baselines. After reviewing existing building data sources, we created sets of prototypical building energy models for 18 existing commercial building types based on commercial buildings energy consumption survey data. Then, we identified sensitive program design features (PDFs) for all building types. By developing adjustment factors for sensitive PDFs, we could adjust the empirical baseline EUI of Building EQ In Operation to match the modeled baseline EUI of Building EQ As Designed, with relative errors of less than 5%. To support building energy rating for new buildings, we developed a procedure to reconcile the modeled baseline EUIs of Building EQ and ASHRAE Standard 90.1, with relative errors of less than 5%.

Original languageEnglish (US)
Pages (from-to)101-133
Number of pages33
JournalScience and Technology for the Built Environment
Issue number2
StatePublished - 2024

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Building and Construction
  • Fluid Flow and Transfer Processes

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