FAQs about EAp2 :

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

Can mezzanines open to floors below be excluded from the energy model?

How do I provide a zip code for an international location?

For a project outside the U.S., how do I determine the climate zone?

For a project outside the U.S., how do I determine the Target Finder score?

Do hotel rooms need automatic light shut-off control?

How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

The Section 9 space-by-space method does not include residential space types. What should I use?

Can the Passive House Planning Package (PHPP) be used to energy model for LEED?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

Our project has a diesel backup generator. Should we include it in our energy model?

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

Do I need to justify the electrical and fuel rates I am using in my model?

Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

Will "representative modelling" meet prerequisite/ASHRAE reqs?

The project at hand is ~500,000 sf and contains 4 buildings, each with 2 sub-floors, a ground floor, and between 4 and 11 stories and a district heating source. We are using the Application Guide for Multiple Buildings and the project has a Master Site, 1 block registration, and 1 single building registration. It is clear we need to demonstrate each buildings individual compliance, but we have the following questions: 1) Does each building need to be individually modeled with and without the district heating plant to demonstrate compliance; 2) Do EAp2 and EAc1 submittal forms need to be submitted for each building within the group; and 3) As the project is quite large our idea is to create a representative energy model by building out the geometry of the floors that are different, but then just multiplying the energy use of the floors that are identical rather than putting between 3 and 9 identical floors into the model - would this be acceptable to meet prerequisite and credit requirements?

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Thu, 10/04/2012 - 16:11

1. No you do not need to model it both ways. If following the DES guidance pick either option 1 or option 2. 2. For EAp2 a separate form for each building would be needed to evaluate compliance. For EAc1 I would assume you add the energy use for all and then determine the percentage achieved for the points. 3. You do need to model the whole building. Modeling identical floors is usually pretty easy as the modeling software I am familiar with has a way to automatically recreate identical floors.

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