1) if there is a discrepancy between the actual main meter of the energy supplier and the submeter total (sub meter total is around 8 to 10% less), which data should we input for the portfolio manager? can we use the total from the main meter reading then appropriated into the percentage breakdown of service (HVAC, Lighting, Misc, etc) based on the submeter readings?
2) if the sub meters are due for calibration, will the data log still be valid or do they need to be calibrated before making any entries?
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Jenny Carney
Vice PresidentWSP
LEEDuser Expert
657 thumbs up
June 24, 2010 - 11:39 pm
One of the supporting documents for to substantiate your energy benchmarking for this prerequisite is utility bills, so your Portfolio Manager inputs should match the values reported to you by the utility. There's no need to breakdown consumption by end use for this prereq (though a breakdown by end use is a part of the energy auditing for EAp1, and also comes into play if you are pursuing the submetering credits.
Pablo Fortunato Suarez
Principal ESD Consultant/ArchitectGreenArc Sustainable Building & Architecture
253 thumbs up
June 25, 2010 - 1:17 am
Thanks Jenny. Yes I ask in relation to submetering as well. The discrepancy (between total of submeter and utility bill) is in the order of about 6%, not 8%. Will this be acceptable?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11477 thumbs up
July 1, 2010 - 11:02 pm
Since as Jenny said, this credit is based on the utility bills, it doesn't look like an issue to me.
Pablo Fortunato Suarez
Principal ESD Consultant/ArchitectGreenArc Sustainable Building & Architecture
253 thumbs up
July 5, 2010 - 8:07 am
Thanks Tristan.
In LEEDuser EAc3.2 notes state:
"The total annual energy usage reported in your energy-use breakdown must be within 10% of the total annual energy use reported in EAc1. The annual energy use reported for EAc1 is derived directly from utility bills whereas the breakdown reported for this credit is derived from commissioning or auditing activities, utility bills, or spot or other metering." I guess this answers my question.