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Wednesday, May 26, 2010

IES » » Re-weighting of Energy Model for LEED-CS

Source: http://blog.iesve.com/index.php/2010/05/26/re-weighting-of-energy-model-for-leed-cs/

Finally, it has arrived! The long awaited redistribution of points for Core & Shell projects pursuing EAc1 was issued. The USGBC finally acknowledges that “energy neutral” does not benefit projects under the LEED-CS v2.0 rating system.

The tenant’s components in the energy model, such as lighting and plug loads, is kept the same in both the proposed and baseline building. This “dilutes any energy cost savings percentage the developer is able to attain by at least 40% to 60%.” The developer could only push the envelope so much. Really, the only option for achieving points under EAc1 was if the developer mandated specific energy usage thresholds through a tenant sales/ lease agreement. Even in good markets, you rarely see a developer willing to restrict future prospective tenants.

Now, projects registered prior to April 24, 2009 can use a new Excel spreadsheet tool that provides the updated reporting methodology and is now a submittal requirement for LEED-CS v2.0 EAc1. Trying it out, it looks like a project can easily achieve, if not too easily, all the energy credits under EAc1 and is no longer penalized. For more information visit “LEED Resources & Tools” for LEED-CS v2.0 at www.usgbc.org.


IES » » Re-weighting of Energy Model for LEED-CS

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