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If pursuing Option 2, what is the scope of the energy model if the space shares a central plant, and what type of software should be used?

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CI-2009 EAc1.3:Optimize Energy Performance—HVAC

Option 2 - The Performance Rating Method

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Emma Eliasson
Building Engineer
Skanska Sweden AB
LEEDuser Basic Member
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Hi, LEED Reference Guide For Green Interior Design And Construction says in chapter EAc1.3 (# 6. Calculations) on p.168 that the standard has 2 energy comparison methods, both of which are appropriate for demonstrating energy cost savings to earn this credit. They are refering to the ECB method and the Performance rating method. As I understand this are two dofferent methods. In my case I want to use the BPRM since I've already done this calulation for the CS-certification. But when I am about to fill in the form on LEED Online I can only see options for how to report the ECB-method. They want me to provide the ASHRAE Interactive ECB Compliance Report. I don't understand how to do the report when not using the ECB-method, but BPRM. Can anyone help me to clarify this? Thanks! /Emma

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Dan LeBlanc
Senior Sustainability Manager
YR&G
LEEDuser Basic Member
62 thumbs up

Tue, 07/03/2012 - 19:05

Emma, I would use Table 1.4, catered to this project scope, as a stand in for the ECB form.
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Grace Ming
Senior ESD Consultant
LEEDuser Basic Member
62 thumbs up

Tue, 08/28/2012 - 06:01

Hi Daniel, We also have the same conditions as mentioned by Emma. We used PRM to conduct the energy modelling for our project. Could you please elaborate more on Table 1.4? Is it OK if we don't complete the ECB form? Appreciate your advice. Thanks much. Hi Emma, Appreciate if you could share what you submitted for your project. Thanks much. Thanks, Grace
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Tue, 08/28/2012 - 13:44

The ECB form can be obtained here - http://www.ashrae.org/standards-research--technology/standards-forms--procedures - the form simply reports the energy modeling results. It would work with either the ECB or PRM. Table 1.4 is submitted for BD+C projects with their energy model. It summarizes the modeling inputs in the baseline and proposed, not the modeling results. It would not be a substitute for the ECB Form. It could be used to supplement the narrative on the credit form where you describe your assumptions and calculations.
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Grace Ming
Senior ESD Consultant
LEEDuser Basic Member
62 thumbs up

Wed, 08/29/2012 - 04:54

Hi Marcus, Thanks for your reply. So, we still can fill in ECB form even though we used APPENDIX G for our energy modelling. Ok, we will submit our modelling inputs for baseline and proposed model as well. It helps. Thanks much, Grace

Tue, 03/19/2013 - 17:56

Hi Everyone, I am having the same problem today and looking arround I found that there is a compliance form in ASHRAE website, which is specific to demonstrate BPRM compliance, and which I think will be suitable to replace the ECB form in the leedonline form, What do you think,

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