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We are proposing to metering a new building with a single controller. The controller has the capability to monitor each individual end use (lighting, plug loads, HVAC, water, gas, etc.). Can we meter everything on a distribution board except one specific

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NC-v4 EAc3:Advanced energy metering

Definition "individual energy end use"?

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Lise Dannesboe
Sustainability Manager
COWI
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Hi, i went though all the comments on this forum and cannot really find a clear answer to the question i have when i read the sentence: "any individual energy end uses that represent 10% or more of the total annual consumption of the building". The wording "individual" is not quite clear to me. There are two ways to read this (given examples): 1.) The overall lighting end use energy consumption is more than 10% of the total annual consumption of the building, hence i have to sub-meter all lighting in the whole building and sum it up. 2.) There is one specific/ individual lighting armature which uses more than 10% of the total annual consumption of the building, hence i have to submeter this one lighting armature. I realize that this is an unrealistic example since one lighting armature will never use more than 10% of the total annual consumption of the building (unless it is Yoko Onos Imagine Peace Tower). Thankyou

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Marcus Sheffer
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7group / Energy Opportunities
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Fri, 01/06/2017 - 15:05

1 is correct. An energy end use is simply a category of energy use within a building (i.e. interior lighting, exterior lighting, space heating, space cooling, pumps, fans, receptacles, service hot water, etc.). They are basically the categories that the energy modeling software uses to break down the overall energy use. Trace lumps some of this stuff together so sometimes a further breakdown of the base utilities is necessary.

Thu, 04/16/2020 - 15:24

I realize this is old but digging down a bit deeper in this example.  For fans, that power from our model could include small unit heaters, fan coils, etc. which be fed separate from larger AHUs but would still need to be metered and summed with the larger (AHU) fan energy use?
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Marcus Sheffer
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7group / Energy Opportunities
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Thu, 04/16/2020 - 15:45

The short answer is yes. I would advocate that in some cases you should be able to derive the energy use , say from BAS data, if it is not practical or possible to separately meter each one of the smaller fans. The key to enabling the metering of energy end uses is to place as many of the end use circuits in separate panel boxes as possible.
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Thu, 03/04/2021 - 07:45

Hi, I would need another clarification about "any individual energy end uses that represent 10% or more of the total annual consumption of the building". If there are different tenants in the building do we need to submeter their energy end uses that represent 10% or more of the total annual consumption of the building separately? 
As I have understood it is only if we would certify the building according to Core and Shell that we would need to do that but I would like to make sure (my project is New Construction). 
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
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Thu, 03/04/2021 - 14:38

Tenant energy use is not an end use. Your assessment is correct.

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