Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question

Is it necessary to insert the energy cost to LEED simulations ?

asked 2015-07-09 21:25:47 -0500

updated 2015-07-10 08:15:02 -0500

I'm doing a simulation for LEED and I already read the Appendix G of ASHRAE 90.1. It did not seem necessary to perform an energy cost analysis in the simulation, only an energy consumption analysis. However, reading the regulation of LEED, I see that it requests this cost analysis in the simulation.

Then I ask:

1) Is it really necessary a cost analysis between the baseline and the proposed model in a simulation to be submitted to the USGBC?

2) Is it possible enter the full energy cost data in OpenStudio? If so, how?

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2015-07-10 06:08:36 -0500

To answer your first question YES.

It is a requirement of ASHRAE Standard 90.1 Appendix G to determine the annual costs of both the proposed design and baseline design. Section G1.2 of ASHRAE Standard 90.1 require calculating the percentage improvement using two defined terms "baseline building performance" and "proposed building performance". These terms are defined in Section 3.2 (of 90.1-2007 but I believe it essentially the same in other versions) as "the annual energy cost for a building design intended for use as a baseline for rating above standard design" and "the annual energy cost calculated for a proposed building" respectively.

As for your second question, I believe that you can enter energy cost data in OpenStudio but I will defer to someone else to tell you how to do that.

edit flag offensive delete link more



See this question for instructions on how to add utility rates to OS.

MatthewSteen's avatar MatthewSteen  ( 2015-07-10 08:18:23 -0500 )edit

Thanks Jason and Matthew!!

The measure in BCL resolved the problem very well!

Geraldo Pithon's avatar Geraldo Pithon  ( 2015-07-12 15:02:16 -0500 )edit

Your Answer

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

Add Answer

Training Workshops


Question Tools

1 follower


Asked: 2015-07-09 21:25:47 -0500

Seen: 263 times

Last updated: Jul 10 '15