Question-and-Answer Resource for the Building Energy Modeling Community

Modeling for 179D tax deductions

asked 2019-02-04 22:04:32 -0500

Iqq have several high-rise multifamily projects I have been asked to model for 179D tax deductions. My old software is no longer supported for projects completed in 2017. I downloaded Energy Plus which led me to OpenStudio and Sketchup. Modeling the building seemed straight forward.

But once I model the building, how do I know if the HVAC, envelope, and lighting meets the requirements of 179D. Am I missing something?

Sorry if this doesn’t belong in this forum, but I’m stumped and support directed me here.

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2019-02-05 11:48:52 -0500

mdahlhausen

9314 ●17 ●11 http://openstudio.net/

This document describes the process.

Model the building as is and the ASHRAE 90.1-2007 baseline and then demonstrate that you meet a certain percentage energy cost savings from baseline depending on the deduction you are targeting. There is an OpenStudio measure Create Baseline Building that generates the ASHRAE 90.1-2007 baseline, though there are some minor changes to make for PRM method vs. Appendix G as specified in the report above.

edit flag offensive delete link

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Careers

Question Tools

1 follower

Stats

Asked: 2019-02-04 22:04:32 -0500

Seen: 174 times

Last updated: Feb 05 '19

Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The Unmet Hours and Big Ladder names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the Creative Commons Attribution Share Alike 3.0 License.

Modeling for 179D tax deductions edit