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

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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?

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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?

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

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EBOM-2009 EAp2:Minimum Energy Efficiency Performance

LEED EBOM EAP2 Minimum Energy Effiuciency

Hi, We are pursuing Option 2B: Energy Baseline including Historical Data for minimum energy efficiency, the weather normalized Energy Use Index from Energy Star Portfolio Manager during performance period is 141 kBtu / sq.ft against 173.5 kBtu/ sq.ft of baseline which derived from Historic data. However, when I feed these details into Case2 offline calculator it show the percentile level above national median is 28 and corresponding point is 6. subsequently, we realized that 213 kBtu / sq.ft has been taken as baseline for calculation. Can we use this percentile to sought 6 points under EACr1 Optimize Energy Performance? Or, we have to use the percentile above national median by considering the baseline derived from historic data?.

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Profile picture for user bstanley
Ben Stanley
Senior Sustainability Manager
WSP - Built Ecology
LEEDuser Expert
188 thumbs up

Wed, 03/30/2016 - 18:39

Hi Abdul, if the building doesn't qualify for Case 1 or Case 2 Option 1, then you do have to account for historic data under Case 2 Option 2B. But, I'm not clear about the inconsistency between the baseline EUI of 173.5 and 213. Were they both derived from historic data? Could you explain this in more detail?

Thu, 03/31/2016 - 10:47

Hi Ben, We have uploaded energy consumption of 2013 to 2015 for baseline establishment in Energy Star Portfolio Manager. The weather normalized Energy Use Index of 2013 - 164 kBtu / sq. ft 2014 - 174.3 kBtu / sq. ft 2015 - 182.2 kBtu / sq. ft An average, Energy Use Index of Baseline is 173.5 kBtu / sq. ft. Likewise, Energy Use Index during performance period is 141 kBtu / sq. ft. when I am feeding these details into case 2 calculator, it shows, Historic Average is 173.5 kBtu / sq. ft and Option 2B baseline is 213 kBtu / sq. ft. The percentile above national median is 28 and corresponding point is 6. It unveils that if Baseline Energy Use Index derived from Historic Data is less than 213 kBtu / sq. ft, the calculator would take 213 kBtu / sq. ft as Baseline and accordingly estimate the energy savings. My question is "Is it right and Can we use this percentile in EACr1 Optimize Energy Performance and sought 6 points under this credit" since baseline from historic is different.
Profile picture for user bstanley
Ben Stanley
Senior Sustainability Manager
WSP - Built Ecology
LEEDuser Expert
188 thumbs up

Thu, 03/31/2016 - 16:15

I'm not totally sure what is happening. But, is the 213 kBtu/sq.ft being derived from Option 2A in the calculator? Also, what type of building is it? If the building doesn't comply via Option 2A, given the historic data that you have, the building wouldn't comply with Option 2B either. In that case, you would need to find three or more comparable buildings to pursue Option 2C.

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