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

21 points

Hi Guys I have a pleasant dilemma. The project is new build offices in climate zone 5a. The energy model indicate savings of 39.52% from the baseline. When I calculate the costs manually, to take advantage of the ACP, I get 52.9% developer influenced costs. Via the ACP, 39% savings with 53% influence gives me 21 points. Has anyone seen this before (considering it is a good, but not ground breaking building)? Thanks

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Mon, 07/29/2013 - 13:29

Really good for a CS project is often pretty ground-breaking. What the % influenced does is lower the thresholds for the points. So your percent savings relative to what is within your control is pretty impressive.

Mon, 07/29/2013 - 14:38

Thanks for the reply Marcus The fact that Gas is less 1/3 of the value of Electricity may be helping me ...but I don't set the prices! We also have no electric heating and no electric service water.

Tue, 08/20/2013 - 03:25

We see some large improvements when modelling naturally ventilated buildings in mild climates too. Sometimes the ASHRAE baselines have large ( maybe excessive ) energy costs compared to the actual ?

Tue, 08/20/2013 - 14:22

One can certainly argue that the ASHRAE baselines do not make sense in certain situations. On the other had it is incredibly difficult to come up with any system that accommodates every situation.

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