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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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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

New Construction vs Major Renovation

Ritwik Kakati

Dagher Engineering, PLLC

LEEDuser Basic Member

0 thumbs up

Project location :

December 18, 2014

Our project consists of renovation of 140,000 SF of an existing building, as well as the addition of 30,000 SF of new space. For whole building energy simulation, I see minimum requirement of 10% improvement for new buildings and 5% for major renovations. I'm trying to determine which requirement applies to our project - can our project be considered as a major renovation, or it has to be considered as a new construction?

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Thu, 12/18/2014 - 23:47

It is both. The percentage savings related to the points will be based on a weighted average of the new vs existing. The EAc1 form automatically calculates the percent savings and awards the correct points. In your case the savings threshold for the first point would be 5.88%.

Ritwik Kakati

Dagher Engineering, PLLC

LEEDuser Basic Member

0 thumbs up

Fri, 12/19/2014 - 15:50

Thanks!

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