01595nas a2200169   4500008004100000050001500041245006900056210006800125260002700193520101300220100001901233700002101252700002101273700001701294700002601311856008801337       2006                        eng d  aLBNL-6152700aUsing EnergyPlus for California Title-24 compliance calculations0 aUsing EnergyPlus for California Title24 compliance calculations  aCambridge, MAc08/20063 a<p>For the past decade, the non-residential portion of California's Title-24 building energy standard has relied on <em>DOE-2.1E</em> as the reference computer simulation program for development as well as compliance. However, starting in 2004, the California Energy Commission has been evaluating the possible use of EnergyPlus as the reference program in future revisions of Title-24. As part of this evaluation, the authors converted the Alternate Compliance Method (ACM) certification test suite of 150 <em>DOE-2</em> files to <em>EnergyPlus</em>, and made parallel <em>DOE-2</em> and <em>EnergyPlus</em> runs for this extensive set of test cases. A customized version of <em>DOE-2.1E</em> named doe2ep was developed to automate the conversion process. This paper describes this conversion process, including the difficulties in establishing an apples-to-apples comparison between the two programs, and summarizes how the <em>DOE-2</em> and <em>EnergyPlus</em> results compare for the ACM test cases.</p>1 aHuang, Yu, Joe1 aBourassa, Norman1 aBuhl, Walter, F.1 aErdem, Ender1 aHitchcock, Robert, J.  uhttps://simulationresearch.lbl.gov/publications/using-energyplus-california-title-0