FAQs about EAp2 :

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?

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?

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?

View answers »

Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Exceptional calculation method application.

Under ASHRAE 90.1 – G2.5, can we avoid to use a workaround to detail a HVAC system feature which could involve an energy saving, therefore avoid to do an exceptional calculation method, if we prefer a precautionary solution that do not require any workaround on the energy model? Thanks.

1

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Mon, 06/08/2015 - 14:44

Ciao Fabio. Probably, but some more detail would help provide a more definite answer. LEED reviewers can bend the rules a bit as long you can make the case that the results are conservative. Conservative meaning that the energy savings percentage is lower as a result.

Mon, 03/18/2024 - 07:19

@MARCUS, Is therre any valid methodlogy or claculator avalbe for Exceptional claculator?  the Energy Star calculator does not cover all type of equipment. we wan to claculate the load of factory.

Tue, 03/26/2024 - 23:54

Exceptional calculations tend to be specific to a particular situation so I am not aware of any sort of calculator for them. Energy Star does not address factory equipment. 

Thu, 03/28/2024 - 03:50

Thanks Marcus, I need to claculate it for manufacturing process Motors.

Thu, 03/28/2024 - 14:00

Here is a place to start. https://www.energy.gov/eere/iedo/motor-systems

Tue, 03/04/2025 - 21:45

Could anyone provide a sample of an exceptional calculation methodolgy for office building receptacle equipment that will meet the reviewer's requirements? I would apprecite any feedback.

Wed, 04/02/2025 - 21:26

The proposed is easy, model it as designed. The challenge is in developing an appropriate baseline. That depends on what kind of receptacle equipment you are trying to claim savings for. Energy Star might help. LEED for Retail has a list of acceptable equipment baselines. What kind of receptacle equipment are you seeks to show savings for?

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.