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The energy cost offset from onsite renewable energy cannot be used to demonstrate compliance with the prerequisite. Can this cost offset still be credited to the proposed energy cost savings for this credit?

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CI-v4 EAc2:Optimize energy performance

HVAC Equipment Efficiency

Hi, my building has a single tenant and we are going for LEED ID+C. The building is served by a water-cooled chiller plant and chilled water fan coil units. Looking at the ADEG for climate zone 1, there is no reference for chiller efficiency for a water-cooled chiller. So how do I know if the existing chillers' performance is eligible for LEED? 

Also, for submission purpose, do I just provide the rated specifications of the chillers or do I conduct a energy audit to determine the existing chiller plant performance?

As the existing FCUs are CAV, does that mean that they do not comply to the recommendations for FCUs in 50% ADEG?

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 10/10/2018 - 15:05

If there is no specific requirement then you do not have to demonstrate compliance. You could provide either one. It does appear that variable speed fans are required.

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