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<p class="MsoNormal"><span style="font-size:11.0pt">No modeling is required for the demonstration, although you might use modeling to develop the project. The EEBRP percentage is based on EUI of the property before and after the retrofit.
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<p class="MsoNormal"><span style="font-size:11.0pt">This guide might help: https://www.irs.gov/pub/fatca/int_practice_units/irc179d-energy-efficient.pdf<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ligatures:none">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-ligatures:none"> Bldg-sim <bldg-sim-bounces@lists.onebuilding.org>
<b>On Behalf Of </b>Melissa Crowe via Bldg-sim<br>
<b>Sent:</b> Wednesday, August 6, 2025 8:27 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] ASHRAE 90.1 for 179D Energy Efficient Commercial Buildings Deduction - Existing Retrofit Property (EEBRP)<o:p></o:p></span></p>
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<p class="MsoPlainText">Hi All<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Anyone have any recent experience modeling for compliance with the US Code 179D?<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I am looking for some insight into what version of ASHRAE 90.1 and what path (Energy Cost Budget, Appendix G..) to use for compliance with the US Code 179D Energy Efficient Commercial Buildings Deduction for an existing Retrofit Property
(EEBRP) that is over 30 years old and undergoing substantial retrofit.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Any information would be appreciated.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thank you<span style="font-size:12.0pt;font-family:"Aptos",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;color:black">Melissa Crowe, LEED AP, BEMP</span></b><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-family:"Calibri",sans-serif;color:black">VP, Senior Mechanical Engineer</span></i><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Oakwell<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Phone: 978-204-2559<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Email:
<a href="mailto:Melissa.Crowe@oakwellteam.com">Melissa.Crowe@oakwellteam.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.oakwellteam.com_&d=DwMFAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=H-N7RzYOchCli6xv70Ckr3eCssZLBe1a9sUxLbBEulo&m=yDSCSbRuLk3LBQEdF2AgzVR7PoKV--SMthczZznXG3J0a4y1ekolmT5Y6ZnHtGQF&s=N66ak3PHyJc85jfNbBc_6Vj3oaa85I3xnYl6NsUaC6o&e="><span style="color:blue">www.oakwellteam.com</span></a><o:p></o:p></span></p>
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