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EBOM-2009 EAp2:Minimum Energy Efficiency Performance

Temporarily empty building

Hello, we have an office building in Slovakia that was occupied by one tenant till this summer. Now, the tenant left the building and an owner prepares a partial reconstruction (cooling system that was extremely unsufficient, there were no server rooms cooling, etc.). The reconstruction begins in Jan/2013 and will be finished in some 3 months. This is not a case of major reconstruction, the rest of building will be unchanged. The building will be used as a multi-tenant after the reconstruction. We have energy and water data several years ago. I would like to ask how to handle with EAp2 because: - there is no tenant now - the previous energy systems were extremely inefficient but the total consumption was relatively low because of missing cooling systems. Is the EB:OM the appropriate scheme at all? (NC is not applicable because the building is older and there is no chance to fulfill all the ASHRAE requirements). How to compare the previous and the future consumption? The new consumption will be optimized after the reconstruction and there will be no decrease during first year of occupancy. Thank you for any advise. Frantisek

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Eric Johnson
Sustainable Cost Solutions LLC
LEEDuser Premium Member
195 thumbs up

Wed, 08/29/2012 - 08:55

Frantisek, You can read this - Reduced Occupancy Guidance for LEED 2009 Existing Buildings: Operations & Maintenance and LEED for Existing Buildings: Operations & Maintenance v2008 - http://www.usgbc.org/ShowFile.aspx?DocumentID=6292 or just give me a call. This one is handy also - LEED Rating System Selection Guidance - http://www.usgbc.org/ShowFile.aspx?DocumentID=6292
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Michael Smithing
Director - Green Building Advisory
Colliers International Ltd.
LEEDuser Basic Member
201 thumbs up

Wed, 08/29/2012 - 08:57

Eric beat me to the answer - you need to have 50% occupancy throughout the performance period. This means you really can't begin the EBOM certification process until 12 months after the building reaches 50% occupancy as you need a 12 month performance period for EAp2.

Wed, 08/29/2012 - 09:30

Thank you very much. This is what I have suspected. Really is there not any possibility to compare the year before reconstruction and the year after (assuming at least 50% occupancy after reconstruction) or take the last "fully occupied year" for comparison? The building was fully occupied before reconstruction and data is available. The problem is in the reconstruction period only.
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Eric Johnson
Sustainable Cost Solutions LLC
LEEDuser Premium Member
195 thumbs up

Wed, 08/29/2012 - 09:45

Frantisek, Maybe you could use one of the Global Compliance paths or request an alternative compliance method / CIR? - https://www.usgbc.org/ShowFile.aspx?DocumentID=19178: Projects outside the U.S. may use a local benchmark based on source energy from their country’s national or regional energy agency.
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Michael Smithing
Director - Green Building Advisory
Colliers International Ltd.
LEEDuser Basic Member
201 thumbs up

Wed, 08/29/2012 - 10:41

If you have a new tenant coming in when the renovation is done then there should be a way to deal with the down time. How does the historical data look in Portfolio Manager?

Wed, 08/29/2012 - 11:13

Thanks for reply. We have not analyzed data yet, we are at the beginning of the process and trying to estimate milestones and schedule for the project. The data analysis will be probably very useful information. If the energy consumption looks good, can we use this information as a proof of EAp2 even if the building is under reconstruction now? Again - the last data with full occupancy are several months old.

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