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Forum discussion

EBOM-2009 EAp2:Minimum Energy Efficiency Performance

EAp2 CaGBC Calculator

I am working on achieving LEED for a convention centre in Canada. Since the facility type falls under "Other - Entertainment/Culture", we are required to use Option C3 (Energy Baseline Including Historical Data plus Comparable Buildings). My first question revolves around the comparable data I am using. All of the energy consumption data is from 2008 (the most recent year we could consistently acquire from other convention centres across Canada). Is it okay to use this information from over two years ago, or does it need to be more recent? My second question has to do with the calculator itself. The macro in the program does not seem to be working properly as the information I am inputting in Table 8 is not transferring to Table 9. A red note on Table 9 states that there is "Data Missing from Table 8". To the best of my knowledge, I have input all of the relevant information. Is there any chance the file from CaGBC is not working correctly? If anybody can shed any light on this for me, it would be greatly appreciated!

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David Hubka
Director of Operations
Transwestern Sustainability Services
LEEDuser Basic Member
355 thumbs up

Tue, 05/17/2011 - 12:38

The historical energy use data of the project building can include three years of consecutive data within the previous six years of the start of the performance period. Energy use data from three comparable buildings must inculde two consecutive years. To normalize your building's historical data with comparable buildings I would use similar years for both. For example, use 2006, 2007 & 2008 energy data from your building + 2007 & 2008 from three comparable buildings to create a baseline. Also, LEED Online only asks for one year of energy use data from comparable buildings even though the LEED reference guide asks project teams to gather 2 years of data. Don't know what's going on with the online calculator.

Fri, 05/27/2011 - 17:15

Thanks for your response David. I should have clarified that we are doing the CaGBC version of LEED EB:O&M, so we don't have an online calculator, we have an offline excel calculator that's pretty buggy and causing some headaches. We'll continue to wait for CaGBC's answer on that though.

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