Hi all, I have LEED CS with very minimum client provision without AC systems (only emergency lights, emergency fans and lifts). But the main tenant has been agreed from the building and the entire building is tenanted to this tenant only. My question is:
1. Should we model the energy modelling based on only client provision or we can include the tenant provision, since it is agreed from the beginning of this project and we have tenant energy systems data? Since landlord provision is very minimum.
2. Are we allowed to include tenant energy system data for LEED CS project?
3. Any official documents indicate the answer for my question 1 and 2? (eg. MPR, Reference guide etc)
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
December 11, 2015 - 10:30 am
1. Yes you can model the tenant design and claim energy savings associated with it.
2. yes
3. Not sure I would have to go digging. Start with the Reference Guide.
Michael Wahjudi
Sustainable Consultant3 thumbs up
December 13, 2015 - 8:11 pm
Thanks Marcus for your opinions. I still have something in mind.
1. If we can exclude the tenant design, how we show the improvement from ASHRAE 90.1? Since the building energy consumption will be extremely very low due to minimum provision of energy related system from the developer.
2. I've noticed as well based on ID #2084, it seems like even we don't have HVAC and lighting design from tenant. We should model HVAC and lighting according to ASHRAE 90.1. Am I correct?
3. If we should model HVAC and lighting design, should we include some assumptions on the potential tenant’s future provision, eg. Chiller plant, air-distribution system, interior lightings, plug loads, etc? or we can follow certain guideline for the HVAC sizing?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
December 14, 2015 - 9:37 am
1. CS projects must include all energy use in the core areas shared by tenants and due to the influence of the building shell. In most areas the building shell influences heating and cooling energy use so this is included and any envelop improvements can be used to show savings. If the CS scope is extremely minimal as it impacts energy savings then it does get much harder to meet the minimum energy savings.
2. Yes if there is no tenant design or provisions in the tenant lease agreements, then the tenant spaces are modeled identical to the baseline.
3. If you are modeling a design then you model that design. There should be no assumptions regarding HVAC or lighting and the HVAC should be modeled using the capacities in the design, not following some guideline.
Michael Wahjudi
Sustainable Consultant3 thumbs up
December 15, 2015 - 2:07 am
Great. Thanks Marcus for your sharing. Appreciate that