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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?

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?

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The Section 9 space-by-space method does not include residential space types. What should I use?

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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

NC-2009 EAp2:Minimum Energy Performance

Core Performance Guide and IECC Supplement

Mitch Gascoyne

Sustainability Consultant

MCW Consultants Ltd

LEEDuser Basic Member

8 thumbs up

August 15, 2012

Does anyone have any experience applying the core performance guide under option 3? I'm wondering which version of the guide we're supposed to use. Advanced Buildings has published an IECC supplement that acts as a "drop in" replacement for section 2 of the guide. The standards are very different in some cases (e.g. no data logging required, much lower equipment efficiency requirements). Any thoughts?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Thu, 08/23/2012 - 16:38

Very few LEED projects use this option in my experience. CPG v1.01 (July 2007) appears to have been in effect when LEED 2009 was released. CPG v1.11 (June 2011) was released after so it appears that the original applies.

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