FAQs about EAc1 :

Our building includes a large laboratory space. Can our project benchmark under the Labs21 program?

We have an international project and the space type is eligible for an Energy Star rating. Can we pursue Case 1 to demonstrate compliance given the recently released alternative compliance paths for international projects?

We have a number of buildings on a single campus that we would like to certify at the same time. Is it possible to benchmark the buildings at the campus level?

I have a mixed-use building and am wondering if it is possible to pursue the prerequisite through Case 1. How do we proceed?

We have a building that consists of two attached structures and it’s unclear if we have to consider it a single building or if it should be certified as two separate buildings and benchmarked accordingly. How should we proceed?

How long is an Energy Star label valid to use with a streamlined approach for Case 1?

Our building includes heavy process loads that significantly increase the overall energy use in the building. If we submeter these loads, can we exclude this energy use for benchmarking purposes?

We have installed submeters on our building but the utility bill includes energy use from several other buildings located on the same campus. How do we reconcile this during the LEED review process?

When is it possible to exclude up to 10% of the building from EAp2?

What do I do if the number of building occupants, operating hours, or vacant space changes during the performance period?

If you pursue the streamlined path for an Energy Star label, should the performance period for EAc6 match the 12-month time frame of the label?

How do I account for computers with multiple monitors on Portfolio Manager?

How should I treat vacant space on Portfolio Manager?

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Forum discussion

EBOM-2009 EAc1:Optimize Energy Performance

LEED Offline Calculator Space Type Definitions/EUI's

Is there a resource that further defines the activity space types as listed on the Case 2 LEED Offline Calculator and thier respective Source EUI's? Specifcally is there a defintion of how these space types are defined/categorized and a explanation as to where the national average data is compiled and calculated?

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Thu, 09/15/2011 - 17:49

Hi Josh, Yes the most complete set of data is the CBECS Database. This is what Energy Star Portfolio Manager is based off of. There you can find and inventory of what you are looking for. Here is the link. Hope this helps. http://www.eia.gov/emeu/cbecs/

Thu, 10/06/2011 - 01:34

Hi Jeff, Thank you for the info. I understand where CBECS and Energy Star Portfolio Manager get their data. My question is where the USGBC's Case 2 LEED Offline Calculator obtains its data as it does not exactly match the CBECS data. Specifically I would like to know where the Case 2 Calculator's space types are defined and the rationale behind the calculator's national average EUI's are further detailed/explained. Can anyone provide this data? Any info helps.

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