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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?

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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?

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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

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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

NC-2009 EAp2:Minimum Energy Performance

ASHRAE standard

Hello, Can someone let me know if ASHRAE 90.1 2010 is acceptable to use in relation to lighting or is 90.1 - 2007 still required to be used? I have read the FAQs above, but want to make sure that information is still true. Thanks,

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 04/15/2015 - 15:11

You can use any addendum to 90.1-2007. I am not sure if any of the lighting changes resulted from an addendum. If not then you should not be using them. I am not sure why you would want to do so as they will likely reduce your energy savings due to the more stringent baseline.

Wed, 04/15/2015 - 17:32

Hi Marcus, Thanks for the reply. I probably should have put a little more context in the question. This question is actually in relation to CI 2009 EA1.1, but the NC page seems to get more traffic, so I figured I would ask here. Our COMcheck LPD was done using 2010 standard because of local code, so I wasn't sure if I needed to have the MEP redo the calculations with 2007.
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 04/15/2015 - 18:39

The 2010 would probably get accepted because it would be a conservative approach, however you may score better if you use 2007.

Wed, 04/15/2015 - 18:46

Thanks Marcus. I appreciate the feedback.

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