[Bldg-sim] LEED Energy Model - 90.1-2004 Appendix G and Local Code

Bernie Hont bhont at girard.com
Thu Oct 30 13:00:07 PDT 2014


I came across this old post regarding LEED energy modeling versus local code.

http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/2008-October/037274.html

I have been searching for an answer as to whether LEED will accept the local code lighting power density allowable using the building area method using an ASHRAE 90.1-2007 baseline. The local jurisdiction adopted IECC 2012 as of July 2012 but the projects is registered under LEED 2009, using the ASHRAE 90.1-2007 baseline. Per IECC 2012 either the IECC lighting densities can be used, or there is an alternative compliance path that allows ASHRAE 90.1-2010 to be used. Both of those have a building area lighting allowance of 0.90 W/SF for an office building versus 1.0 W/SF for ASHRAE 90.1-2007.

Has anyone attempted to claim a lighting power reduction when the local code requires a stricter lighting density than the current LEED version being used for a project? This seems to be a reasonable justification since the proposed building will be required to meet a more strict standard than the baseline standard.
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