We are having a debate on the criteria. I understand requirement to meter any load that is 10% or more of the anual load but is metering the mechanical system as a whole capable of recieving the credit.
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5900 thumbs up
May 30, 2024 - 5:01 pm
Not as I read the credit requirements. The credit language references energy end uses. Energy end uses are what is typically generated from an energy model. They typically include interior lighting, exterior lighting, plug loads, cooling, heating, fans, pumps (if applicable), service hot water, etc. So you need to be able to submeter the project in a way that meters each end use over 10% of the total.
For some mechanical systems like packaged units, heat pumps, etc. the heating, cooling and fans are included in one unit. In that case what I would do is submeter the whole unit and then utilize information from the control system to derive the fan power (need to know run time and fan load over the year) and/or separate out the heating and cooling. Your metering plan should describe this in detail like you had to do in the past for the M&V Plan that this credit replaced. The whole idea behind this credit is to give facilities staff the ability to evaluate energy use by end use as a means to manage energy more effectively post-occupancy.