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CI-2009 EAc4:Green Power

Two Year HVAC Electricity Use

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Joseph Greene
Owner/Architect
Joseph Architects
LEEDuser Basic Member
31 thumbs up

Our LEED project occupies 30% of the total building floor area. The energy model modeled the entire building due to a central boiler and condenser water plant. Central air handling units serve multiple tenants. In determining the two year HVAC electrical use we propose using a square footage percentage (tenant floor area/total building floor area) because the tenant space HVAC electricity use cannot be accurately separated out of the entire building HVAC electricity use. Does anyone have experience with this issue and is the correct approach? Thanks!

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Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Fri, 08/31/2012 - 14:10

Sandra, I don't have experience with a situation like this, but your approach seems to make a reasonable attempt at it, which is all you can do. I would try to submit this as a design credit and then adjust your approach if necessary based on GBCI feedback. Green power is generally inexpensive enough that if you include more kWh to be on the safe side, it shouldn't cost a lot.

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