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FAQs about EAp2 :

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?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

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?

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

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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?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Better to include PV in the ASHRAE model or calc outside?

Carol Roberts

Energy Inspectors

LEEDuser Basic Member

0 thumbs up

April 29, 2015

We are working on an ASHRAE 90.1 model in Nevada and are adding the solar information manually to the LEED online forms, post energy modeling (so our solar energy is not appearing on the software generated report). We are aware that this will require additional documentation to be provided to the LEED reviewer. However, we need clarification on what would be an acceptable method of calculation for the annual output? And what documentation must be provided? Also, would a CF1R PV calculation be an acceptable annual output for the state of California?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Wed, 04/29/2015 - 13:59

Either way works fine for LEED. The most commonly used calculation method we see is PV Watts. It is helpful to provide the inputs and calculations used to determine the PV system output. I am not sure what the State of California accepts but I think LEED would likely accept the result of the calculator that generates the form you reference. Showing the calculation inputs as well as the outputs is helpful.

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