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?

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?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

Elevators with regenerative braking - EAp2 form

Hello, We are modelling for LEED C&S 2009. The project has 26 floor type of mixed-use offices. My question is about the Minimum Energy Perfomance credit form (EAp2). We're going to use elevators with regenerative braking and we don't know how to describe this on the form and how to prove the elevator's efficiency during certification process. 1. Do we model the savings acquired using elevators with regenarative braking in section 1.7 - Exceptional Calculation Measure Summary? If so, is it necessary to do some kind of benchmarking that demonstrates this technology hasn't been used in the past 5 years on similar buildings, in the same location? 2. How can we prove the efficiency of elevators in use regarding to elevators without regenative braking? Do we need to do some kind of measurement in the place or manufacturer datasheets is enough? A simulation based on VDI 4707 standard, provided by the manufacturer, can prove it?

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Tue, 03/20/2018 - 14:28

We have a same question but for V4. Awaiting for suggestion as well.

Wed, 03/21/2018 - 18:44

Sorry looks like I missed this one. I think the same advice applies to v4. 1. Yes you need to do an exceptional calculation and justify the baseline. Using similar building designs in that location is one way to justify the baseline. 2. Most people typically use the calculators that you can find on the elevator manufacturer's web site to demonstrate savings. There are guidelines you can find online for what type of elevator is typically used for the height of your building. No measurement required. I don't know this standard but often the manufacturer can help you determine the savings.  

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