Systems requiring metering

In addition to Tim's question, do sub systems (i.e. elevators, escalators, receptacle equipment, etc) need to be metered separately?

I see your confusion. I think the credit in CS only requires the metering per fuel source and not by energy end use. If you look at the examples below the part you reference they all talk about fuel sources. So you need this for any non-tenant spaces and for the tenant spaces.

Hi is my interpretation below still accurate ? 

Base Building
Base building includes chilled water system (electric chillers, dry air coolers, pumps, fans etc) and heating hot water systems (boilers). 
Energy sources required to be metered with advanced metering characteristics: electricity and natural gas (boilers).

Tenant Spaces
Tenant spaces served by four-pipe fan coil units.
Energy sources required to be metered with advanced metering characteristics: electricity, chilled water, and heating hot water (at least one per floor)."

Also what about end uses such as  lighting, plug loads, fans, pumps etc. Do these not require metering under C&S ? 

Looks right to me.

I do not think those end uses need to be separately metered under CS.

Hi,

from you comments above my understanding is that in order to achieve the credit for a CS project the energy sources (and not end uses) must be metered, independently, for base building and tenant. Is that correct?

What about the case where the energy source is just electricicty and the central plant provide hot/cold water for radiant system and coils of AHU as well as primary air serving either landlord or tenants spaces. Is it acceptable to consider the associated consumption within the base building electrical consumption even if AHU serves also tenant spaces? Each tenant will therefore install independent energy meter for electrical consumption within their spaces (lighting and plugs)?

Waiting for your kind feedback.

Thank you.

Hey Fabio!

Even though the only energy source for the building as a whole is electricity, for the tenant spaces the sources include chilled water and hot water as well as electricity. So you would need to meter the base building electricity use and the electricity, chilled water, and hot water for the landlord and tenant spaces. It sounds like the air handlers serve multiple tenant spaces? In that case it may be difficult to determine the energy use by source in each individual tenant space. The basic idea is that each tenant should pay for their own energy use no matter the source so that they have some sort of incentive to reduce consumption. The metering should enable the total energy use per tenant to be determined.

Hi Marcus, thank you very much  for the reply, really appreciated.

The point is in case of AHU serving landlord (e.g. lobby) and tenant spaces or multiple tenants spaces is it acceptable that this consumption is considered as part of the base building only?

Thank you

Common spaces and back of the house spaces not used by tenants would be in the base building. Any space occupied by the landlord that could be leased to tenants in the future should be separately metered.

If there is a single tenant in a building, is it still necessary to install meters on each floor?

Not sure. Have you checked the Interpretations?

Hi, asking for a C&S project. Does the individual tenant meters need not to have the same granularity as the "advanced energy metering" for all base building energy sources ? 

As long as the tenant meter be able to capture total tenant energy use, this will comply to LEED v4?

Thank you

That is the way I would interpret the credit language.

That sounds correct.

Dear All,

We are persuing Advance Energy Metering credit for C&S. We have basebuild (BOH) and tenant spaces. The tenant spaces are supplied with Electrical, Chilled Water & Gas connections from the Basebuild. My understanding is that each tenant space require one energy meter for each service (Electrical, BTU & Gas), and any individual load inside tenant space increasing 10% of total energy consumption does not require any meter. Please advise.

Further, for the basebuild (BOH services), one energy meter for each services (Electrical at MDB level, BTU at Chiller yard level, and Gas metering at Gas yard level) is provided and a meter for any BOH load exceding the 10% criteria. Please advise if correct.

Finally, the 10% criterion loads are determined from energy modeling and is further provided to MEP engineer to reflect it in the design. Please advise.

For a CS project you only have to submeter by fuel source. The 10% criteria does not apply to CS proojects.

Hi Marcus,
My understanding from your answer is we don't need any energy or water meter at tenant space tie-in location for LEED? and a meter at source ( let say Chiller yard, Mainwater tank, MDB etc.) is enough for this purpose. Further, should we consider tenant as individual load to check the 10% criteria?
Thanks

No but this particular credit only include energy meters. You need energy meters that submeter all of the building's energy use by fuel source. This includes both the tenant spaces and the BOH spaces and this needs to include the base building energy sources. The 10% criteria does not apply to CS projects. The 10% applies to NC projects and the credit requirements are very different.

Thank you, Marcus. Clear now.