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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?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

compliance with ASHRAE 90.1 2007

shashank jain

Environmental Analyst

BDSP Partnership

LEEDuser Basic Member

1 thumbs up

January 10, 2013

In order to fulfil the requirements of EAp2 through building simulation, do we need to meet mandatory requirements of ASHRAE 90.1 2007. We feel that meeting recommended building envelope U/R values (which requires insulation of external walls) and glazing SHGC is not justifiable for the hot and humid climate of our project in Brazil. -We expect to significantly improve building performance by using external shading rather than low glazing SHGC and insulation in walls is having very small impact on energy performance whilst changing the complexity of the project significantly. would be great if anyone can point us in a direction... Thank you

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Thu, 01/10/2013 - 15:26

Yes you do need to meet the mandatory provisons of 90.1 however the insulation levels and window performance values are prescriptive, not mandatory. Sounds like your approach is acceptable within the requirements. The baseline will contain the minimum insulation and window performance values with no exterior shading. Your proposed project does not need to meet any of these prescriptive parameters.

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