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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

LPD part of mandatory provisions?

Tatjana Ernst

LEED AP; Dipl.-Ing.

Scholze-Lava Consulting GmbH

LEEDuser Basic Member

41 thumbs up

January 26, 2011

Hi everyone, i am wondering if the interior lighting power is also restricted by LEED. Do we have to show compliance with the table 9.5.1 or 9.6.1 in ASHRAE? Or do we only use the tables for the simulation of the baseline? I understand that we only have to show compliance with 9.4 so the inside LPDs are not part of it. many thanks in advance Tatjana

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Ricardo Sobral

Technical Services Director

Lend Lease (AR) S.A.

LEEDuser Basic Member

56 thumbs up

Wed, 01/26/2011 - 12:04

Hi Tatjana You are right, you do not have to show compliance with those tables. However, it is highly recommendable to maintain those LPD, since the baseline case at the energy simulation is based on these LPDs, and your project will be compared against that criteria. I transcribe an excerpt of ASHRAE 90.1-2007 appendix G, for the lighting section for the baseline case: "Lighting power in the baseline building design shall be determined using the same categorization procedure (building area or space function) and categories as the proposed design with lighting power set equal to the maximum allowed for the corresponding method and category in Section 9.2." Hope it helps.

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