The question is based on ASHRAE 90.1 requirements for Performance Rating Method for building modeling. This building has very high internal loads with the baseline process load at 49% of the total building energy based on actual equipment. The internal load is primarily computer desktops and monitors. Both baseline and proposed building energy usage numbers are based on a calculation worksheet as published by the US dept of Energy for computer desktops and monitors. The Energy Star usage value increases the proposed energy building performance reduction by 10-15%. This lower value for the process load is still above the 25% requirement for the total building energy amount as outlined in the LEED requirements of this point. The equipment in the new building that the owner will provide will consist of Energy Star computer desktops and monitors. We request clarification that we can run the baseline with standard energy load based on LBNL 2007 standards and proposed building with Energy Star energy loads.
The applicant is requesting clarification on how to account for energy savings due to Energy Star rated equipment. Plug in equipment falls under the Process Loads category and any savings claimed under process loads have to be taken as an Exceptional Calculation. Please model the same process loads in both the baseline and proposed building. Then run a separate run of the proposed building with the Energy Star rated equipment. Report savings from this run Exceptional Calculation table in the LEED Submittal Template. Be sure to include a detailed narrative with all assumptions and supporting calculations with the submittal. Applicable Internationally.