simuwatt - A Tablet Based Electronic Auditing Tool

Daniel Macumber, Andrew Parker, Matthew Brown, Lars Lisell

Research output: Contribution to conferencePaper


'simuwatt Energy Auditor' (TM) is a new tablet-based electronic auditing tool that is designed to dramatically reduce the time and cost to perform investment-grade audits and improve quality and consistency. The tool uses the U.S. Department of Energy's OpenStudio modeling platform and integrated Building Component Library to automate modeling and analysis. simuwatt's software-guided workflow helps users gather required data, and provides the data in a standard electronic format that is automatically converted to a baseline OpenStudio model for energy analysis. The baseline energy model is calibrated against actual monthly energy use to ASHRAE Standard 14 guidelines. Energy conservation measures from the Building Component Library are then evaluated using OpenStudio's parametric analysis capability. Automated reporting creates audit documents that describe recommended packages of energy conservation measures. The development of this tool was partially funded by the U.S. Department of Defense's Environmental Security Technology Certification Program. As part of this program, the tool is being tested at 13 buildings on 5 Department of Defense sites across the United States. Results of the first simuwatt audit tool demonstration are presented in this paper.
Original languageAmerican English
Number of pages12
StatePublished - 2014
EventeSim 2014 - Ottawa, Canada
Duration: 7 May 201410 May 2014


ConferenceeSim 2014
CityOttawa, Canada

Bibliographical note

Proceedings available electronically from IBPSA:

NREL Publication Number

  • NREL/CP-5500-61418


  • Department of Defense
  • energy audit
  • EnergyPlus
  • OpenStudio
  • retrofit
  • simuwatt
  • tablet


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